CN102183142B - Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime - Google Patents
Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime Download PDFInfo
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- CN102183142B CN102183142B CN201010622799XA CN201010622799A CN102183142B CN 102183142 B CN102183142 B CN 102183142B CN 201010622799X A CN201010622799X A CN 201010622799XA CN 201010622799 A CN201010622799 A CN 201010622799A CN 102183142 B CN102183142 B CN 102183142B
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- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 88
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 88
- 239000004571 lime Substances 0.000 title claims abstract description 88
- 230000000694 effects Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- 235000019738 Limestone Nutrition 0.000 claims abstract description 37
- 239000006028 limestone Substances 0.000 claims abstract description 37
- 238000002791 soaking Methods 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 72
- 238000007599 discharging Methods 0.000 claims description 47
- 238000001816 cooling Methods 0.000 claims description 40
- 239000004744 fabric Substances 0.000 claims description 38
- 239000010459 dolomite Substances 0.000 claims description 37
- 229910000514 dolomite Inorganic materials 0.000 claims description 37
- 238000007669 thermal treatment Methods 0.000 claims description 36
- 238000003860 storage Methods 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 29
- 239000007789 gas Substances 0.000 claims description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 235000012550 Pimpinella anisum Nutrition 0.000 claims description 24
- 240000004760 Pimpinella anisum Species 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 24
- 239000011819 refractory material Substances 0.000 claims description 14
- 239000011449 brick Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 12
- 238000005453 pelletization Methods 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 11
- 239000005997 Calcium carbide Substances 0.000 claims description 7
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 7
- 239000003034 coal gas Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 239000002817 coal dust Substances 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 101100399296 Mus musculus Lime1 gene Proteins 0.000 description 65
- 238000001354 calcination Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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Abstract
The invention relates to semi-heat accumulating type rotating bed equipment and a process for producing large-size high-activity lime. Due to the application of a top combustion nozzle and a heat accumulating combustion nozzle as well as the design of a rotating bed in a longer soaking area, lime with the particle sizes of 10-200mm can be burnt at the same time, and mineral resources are utilized sufficiently. Small-sized, medium-sized and large-sized lime can be arranged at different layers, so that overburning and unburnt problems are effectively prevented, the unburnt rate is smaller than 0.5%, and the activity of the lime is increased to 380-420ml. Due to the application of the technology of the rotating bed, powder of the lime product is reduced from 12-30% to 3.0-5.0% compared with that of the traditional equipment, the daily output of the lime reaches 1500-4000 tons, and high-efficiency and high-quality production of the lime is realized. High-temperature smoke of the rotating bed is used for preheating limestone; the heat of high-temperature lime is used for preheating combustion supporting air; and the heat in the system is utilized effectively and comprehensively; moreover, the semi-heat accumulating type rotating bed equipment has the advantages of low comprehensive energy consumption, low production cost and obvious economic and social benefits.
Description
Technical field
The present invention relates to the production technology of lime, relate in particular to a kind of heat accumulating type production large scale high activity lime rotating bed equipment and process.
Background technology
Lime is widely used in the industrial circles such as Ferrous Metallurgy, nonferrous metallurgy, calcium carbide production, chemical industry, to the higher quality requirement of the continuous proposition of the quality of lime.The technology and equipment of lime production mainly contains telescopic shaft furnace, grate rotary kiln, co-current heat accumulated kiln with double shafts, two D kiln, beam type burner shaft furnace, suspension kiln, CID kiln etc. at present.Chinese patent application 200810017556.6 discloses a kind of for the production of the raw material of high-quality calcium carbide, the large-scale energy-saving gas burning kiln of high-quality lime, adopts a kind of car-type elongated horizontal kiln.Chinese patent application 200910086155.0 discloses a kind of burning process of active lime, adopts multistage cyclone pre-heating system, dore furnace and multistage cyclone cooler in interior preheating---the suspension calcining device, and for the production of pulverized limestone.Chinese patent application 200710054579.X discloses a kind of stepped active lime shaft kiln and calcine technology thereof, stops 3-5 hour at 700～800 ℃, stops 2-3 hour under 1250～1300 ℃ of temperature, and production efficiency is low.Chinese patent application 200810231028.0 discloses a kind of closed type calcium carbide furnace tail gas and has carried out the method for active lime calcination as rotary kiln with fuel, is the calcium carbide stove exhaust behind the cooling and purifying and coke powder or coal dust are sent into rotary kiln.Chinese patent application 201010232611.0 discloses a kind of active lime production plant, relates to a kind of take the active lime production plant of coal dust as the fuel turnaround kiln.Chinese patent application 200420087429.0 discloses a kind of active lime shaft kiln equipment that utilizes coke.Chinese patent application 200420120497.2 discloses a kind of gas and has burnt active lime shaft kiln equipment.
There is following defective in existing kiln: (1) can't realize that the same stove of little middle large scale lime stone fires, and the limestone mine resource utilization is low.(2) lime is given birth to burning rate 3～14%, can't produce birth burning rate less than the industrial lime of 0.5% high-quality, lime activity 270～380ml, and quality fluctuation is large.(3) the lime product powder is up to 12～30%.(4) daily output is 300～1000 tons, and the maximum daily output only has 1000 tons, can't realize more large-scale production, and production efficiency is low, comprehensive energy consumption is high.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of half heat accumulating type production large scale high activity lime rotating bed equipment and process, it is low to have solved in the present lime production ore resource utilization, give birth to burning or burning and be difficult to control, the lime activity fluctuation is large, production efficiency is low, percentage of damage is high, lime powder content is high, the comprehensive high problem of finished product energy consumption, especially solved the technical barrier of the high activity lime of 10～200mm large scale mixed calcining, produce 1500～4000 tons in high activity lime a set of equipment day, give birth to the burning rate less than 0.5%, activity 380～420ml, powder is less than 5.0%.
A kind of half heat accumulating type rotating bed equipment comprises revolving bed, pre-heating system, cooling system, dust pelletizing system and finished product conveying system; Pre-heating system is in the top position of revolving bed cloth side, and links to each other with revolving bed with vibratory sieve (3) by distributing device (2); Dust pelletizing system links to each other with pre-heating system by flue (24); Cooling system links to each other with cooling system with blow tank (16) by discharging machine (17) at revolving bed exit side lower position; Cooling system links to each other with the finished product conveying system by finished product hopper (13).
Preferably, described revolving bed comprises cloth district (1), the thermal treatment zone (5), high-temperature region (7), soaking zone (8) and discharge zone (9), and cloth district (1), the thermal treatment zone (5), high-temperature region (7), soaking zone (8) and discharge zone (9) join end to end successively; Vibratory sieve (3) and distributing device (2) are installed in the top of cloth district (1), distributing device (2), vibratory sieve (3) link to each other from top to bottom successively with cloth district (1), and distributing device (2) links to each other with the hopper (20) of its top pre-heating system; The thermal treatment zone (5) links to each other through high-temperature flue (4) with preheater (21).The furnace roof of the thermal treatment zone (5) and high-temperature region (7) is equipped with top burner (6).The both sides of soaking zone (8) body of heater are equipped with heat-accumulating burner (10) and regenerator (11).Revolving bed bed surface one side of discharge zone (9) connects discharging machine (17).
Preferably, the revolving bed bed surface is comprised of refractory material, and refractory material divides three layers, and the bottom is that light fire brick, middle part are that clay brick, upper surface are high-alumina bricks.
Preferably, described pre-heating system comprises hopper (20), preheater (21), charging equipment (22), ore storage bunker (23) and flue (24).Preheater (21) links to each other with distributing device (2) by the hopper (20) of bottom; Preheater (21) bottom links to each other with the thermal treatment zone (5) of revolving bed through high-temperature flue (4); Preheater (21) top links to each other with charging equipment (22) through ore storage bunker (23), and the material that charging equipment (22) is carried enters preheater (21) through ore storage bunker (23).
Preferably, the preferred belt conveyor of described charging equipment (22), or the equipment such as bucket elevator.
Preferably, described pre-heating system comprises two cover identical preheater (21) and the second preheaters (A21), comprise the second hopper (A20), the second preheater (A21), the second charging equipment (A22), the second ore storage bunker (A23) and the second flue (A24), type of attachment and preheater (21) are identical.Namely the second preheater (A21) links to each other with distributing device (2) by second hopper (A20) of bottom; The second preheater (A21) bottom links to each other with the thermal treatment zone (5) of revolving bed through high-temperature flue (4); The second preheater (A21) top the second ore storage bunker (A23) links to each other with the second charging equipment (A22), and the material that the second charging equipment (A22) is carried enters the second preheater (A21) through the second ore storage bunker (A23).
Preferably, described cooling system comprises blower fan (12), finished product hopper (13), cooler (15), blow tank (16) and Secondary Air pipeline (18).Cooler (15) top links to each other with blow tank (16), and links to each other with the discharging machine (17) of rotating bed equipment by blow tank (16), makes high temperature lime flow into cooler (15); The opposite side on cooler (15) top links to each other with Secondary Air pipeline (18), and second-time burning wind is sent to revolving bed; Cooler (15) bottom links to each other with finished product hopper (13), and by finished product hopper (13) the good finished product lime of cooling is delivered to the finished product conveying system.One side of cooler (15) bottom is connected with blower fan (12).
Preferably, described cooling system comprises two cover identical cooler (15) and the second coolers (A15), triple valve (19); Comprise the second blower fan (A12), the second finished product hopper (A13), the second cooler (A15), the second blow tank (A16), the second Secondary Air pipeline (A18), type of attachment and cooler (15) are identical.That is: the second cooler (A15) top links to each other with the second blow tank (A16), and links to each other with the discharging machine (17) of rotating bed equipment by the second blow tank (A16), makes high temperature lime flow into the second cooler (A15); The opposite side on the second cooler (A15) top links to each other with the second Secondary Air pipeline (A18), and jointly second-time burning wind is sent to revolving bed by triple valve (19) and Secondary Air pipeline (18); The second cooler (A15) bottom links to each other with the second finished product hopper (A13), and by the second finished product hopper (A13) the good finished product lime of cooling is delivered to the finished product conveying system.One side of the second cooler (A15) bottom is connected with the second blower fan (A12).
Preferably, described revolving bed finished product conveying system is finished product conveyer (14), the equipment such as preferably belt material delivering, or chain-bucket conveyer.
Preferably, described discharging machine (17) is water-cooled push rod discharging machine, or the water-cooling spiral discharging machine.Preferred described cooler (15) is shaft cooler, or chain grate formula cooler.Preferred described preheater (21) is shaft preheater, or chain grate formula preheater.
Preferably, described dust pelletizing system comprises: flue (24), deduster (25), dedusting fan (26) and smoke discharging pipe (27).One end of deduster (25) is connected with preheater (21) through flue (24), and the other end of deduster (25) links to each other with smoke discharging pipe (27) with dedusting fan (26) successively.Preferably, an end of deduster (25) is connected with the second preheater (A21) with preheater (21) respectively with the second flue (A24) through flue (24).
The present invention also provides the process of the high activity lime of a kind of half heat accumulating type rotating bed production large scale, it is characterized in that, and be granularity that 10～200mm lime stone is preheating to 800～900 ℃ through the ore preheater, send into revolving bed; In revolving bed, lime stone is rapidly heated to 1000～1200 ℃ of high temperature fast decoupleds, 900～1100 ℃ of soaking reach fully and decompose, and then is cooled to 80～100 ℃ through cooler and obtains high activity, the industrial lime of high-purity high-quality.
The invention provides the method that a kind of half heat accumulating type rotating bed is produced high activity lime, comprise the steps:
1) lime stone is directly sent into preheater through charging equipment; Or send into ore storage bunker, send into preheater through ore storage bunker;
2) ore preheater be used to the to spin high-temperature flue gas preheating lime stone to 800 of rotated bed～900 ℃;
3) lime stone after the preheating is isolated small powder, middle material, aniseed through distributing device, vibratory sieve, and three layers of cloth are on the bed surface of revolving bed;
4) burning of fuel and combustion air provides heat for revolving bed, lime stone is at revolving bed process cloth district, the thermal treatment zone, high-temperature region, soaking zone and discharge zone, directly be sprayed onto on the aniseed on upper strata by top burner flame in the thermal treatment zone and high-temperature region, Fast Heating aniseed, and penetrate the material that the bed of material heats middle part and bottom simultaneously, make material layer temperature even; Burning by heat-accumulating burner flame is flat in the soaking zone, mainly is to guarantee that surperficial aniseed decomposes fully, finally obtains the industrial lime of high activity high-quality;
5) high temperature lime outputs to cooler by discharging machine, and high temperature lime is used to warm-up combustion-supporting air in cooler, be quickly cooled to simultaneously 80～100 ℃ after by cooler bottom output; The revolving bed high-temperature flue gas is sent to the ore preheater and is used for the preheating lime stone, and heat obtains the high efficiente callback utilization.
Preferably, step 1) described limestone granularity is 10～200mm.
Preferably, step 2) described preheater is vertical ore preheater, or chain grate formula preheater etc.Preferably, described revolving bed is rotary hearth continous furnance, or other form revolving bed.
Preferably, step 2) described high-temperature flue gas is from revolving bed, and temperature is 1000～1100 ℃, and high-temperature flue gas carries out heat exchange with lime stone in the ore preheater, lime stone is preheating to 800～900 ℃, and EGT drops to 180～200 ℃ and is sent to the deduster dedusting.
Preferably, step 3) the lime stone small powder granularity 10～30mm after the described preheating, middle material granularity be greater than 30mm less than 60mm, large material granularity 60～200mm.Preferably, described three layers of cloth, namely the bottom of the revolving bed bed surface bed of material is that the middle part of small powder, the bed of material is that the top of middle material, the bed of material is aniseed.
Preferably, step 4) described gas-burning or coal dust.Described fuel gas is selected from furnace of calcium carbide coal gas, blast furnace gas, coal gas of converter, coke-stove gas or natural gas.
Preferably, the revolving bed bed surface is comprised of refractory material, 850～1000 ℃ of the bed surface temperature of cloth district and discharge zone, 1000～1100 ℃ of thermal treatment zone furnace gas temperatures, 1150～1300 ℃ of high-temperature region furnace gas temperatures, 1000～1100 ℃ of soaking zone furnace gas temperatures.
The lime stone 20～30% that is preheating to 800～900 ℃ in the ore preheater has decomposed, lime stone again by the even cloth of distributing device to vibratory sieve, the small powder of granularity 10～30mm, cloth is on bed surface after the screening of small powder process, it is the bottom of the bed of material, on the one hand because the bed surface refractory material remains at 850～1000 ℃ temperature undecomposed small powder is decomposed fully, middle material and the top aniseed at bed of material middle part can prevent effectively that small powder is in the high-temperature region burning on the other hand.According to small powder, middle material, three layers of cloth of aniseed, lime stone directly is sprayed onto on the aniseed on upper strata by top burner flame through the thermal treatment zone and high-temperature region, Fast Heating aniseed, and penetrate the material that the bed of material heats middle part and bottom simultaneously, make material layer temperature even; Burning by heat-accumulating burner flame is flat in the soaking zone, mainly is to guarantee that surperficial aniseed decomposes fully, and the middle material at bed of material middle part obtains high activity, the industrial lime of high-purity high-quality thus owing to there is the existence of soaking zone also to obtain abundant decomposition.
Preferably, step 5) described discharging machine outputs to cooler to high temperature lime (950～1000 ℃), and cold air and high temperature lime carry out heat exchange in cooler, and revolving bed ℃ is sent to as second-time burning wind in air preheat to 500～700; High temperature lime is from top to bottom motion in cooler, to less than after 80～100 ℃, is delivered to lime finished bin by belt material delivering or chain-bucket conveyer by Rapid cooling in the air.
Preferably, this equipment and process method also is used for light dolomite.With dolomite at 950～1000 ℃ of mixtures that are sintered into CaO and MgO.Dolomite is transported to ore storage bunker 23 by charging equipment 22, high-temperature flue-gas from revolving bed is 900～1000 ℃, high-temperature flue gas carries out heat exchange with dolomite in vertical ore preheater, dolomite is preheating to 700～800 ℃, flue-gas temperature drops to 150～200 ℃, is sent to deduster 25 dedustings by flue 24.
Dolomite after the preheating divides on three layers of cloth revolving bed bed surface by small powder, middle material, aniseed, and the bottom of the bed of material is small powder, and the middle part of the bed of material is middle material, and the top of the bed of material is aniseed.
The revolving bed bed surface is comprised of refractory material, 900～950 ℃ of thermal treatment zone furnace gas temperatures, 1000～1100 ℃ of high-temperature region furnace gas temperatures, 1000～1050 ℃ of soaking zone furnace gas temperatures.
Discharging machine outputs to cooler to light dolomite (900～1000 ℃), air at room temperature is moved upward by the bottom and carries out heat exchange with high temperature lime in cooler, and the high-temp waste gas that forms to cooler top is preheating to 400～600 ℃ to the combustion air from combustion fan through air preheater and is sent to the revolving bed combustion fuel; Light dolomite is from top to bottom motion in cooler, by behind Rapid cooling in the air to 80～100 ℃, delivers to the light dolomite finished bin by belt material delivering.
Advantage of the present invention is embodied in:
The revolving bed design of (1) application of top burner and heat-accumulating burner, and longer soaking zone all can be fired lime stone 10～200mm granularity simultaneously, and ore resource is fully used.Realized little, in, the layer-by-layer distribution of different size granularity lime stone, effectively prevented the burning of small size lime stone, and the large scale lime stone is given birth to the problem of burning and is occured, and gives birth to the burning rate less than 0.5%, makes the activity of lime bring up to 380～420ml.
(2) application of revolving bed technology makes the lime product chip index drop to 3～5% by 12～30% of conventional equipment, and the daily output reaches 1500～4000 tons, realizes high efficiency, the high quality of production of lime.
(3) the revolving bed high-temperature flue gas is used for the preheating lime stone, and high temperature lime heat is used for warm-up combustion-supporting air, and system thermal obtains high-efficiency comprehensive utilization, and comprehensive energy consumption is low, and production cost is low, and economic benefit and social benefit are remarkable.
Description of drawings
Fig. 1 is schematic flow diagram of the present invention.Wherein: 1: cloth district, 2: distributing device, 3: vibratory sieve, 4: high-temperature flue, 5: the thermal treatment zone, 6: top burner, 7: the high-temperature region, 8: soaking zone, 9: discharge zone, 10: heat-accumulating burner, 11: regenerator, 12: blower fan, 13: the finished product hopper, 14: finished product conveyer, 15: cooler, 16: blow tank, 17: discharging machine, 18: Secondary Air pipeline, 19: triple valve, 20: hopper, 21: preheater, 22: charging equipment, 23: ore storage bunker, 24: flue, 25: deduster, 26: dedusting fan, 27: smoke discharging pipe, A12: the second blower fan, A13: the second finished product hopper, A15: the second cooler, A16: the second blow tank, A18: the second Secondary Air pipeline, A20: the second hopper, A21: the second preheater, A22: the second charging equipment, A23: the second ore storage bunker, A24: the second flue.
The specific embodiment
Following examples are to further specify of the present invention, but the present invention is not limited thereto.
Described lime activity according to standard DIN EN 13971-2008 (the carbonate lime material. activity determination. the hydrochloric acid potentiometric titration) method measures, lime product chip index granularity is measured according to standard GB/T2007.7 method less than the lime percentage by weight of 5mm, and lime product is given birth to burning rate percentage by weight and measured according to standard GB/T 3286.8 methods.
Embodiment 1
A kind of half heat accumulating type rotating bed equipment comprises revolving bed, pre-heating system, cooling system, dust pelletizing system and finished product conveying system; Pre-heating system is in the top position of revolving bed cloth side, and links to each other with revolving bed with vibratory sieve 3 by distributing device 2; Dust pelletizing system links to each other with pre-heating system by flue 24; Cooling system links to each other with cooling system with blow tank 16 by discharging machine 17 at revolving bed exit side lower position; Cooling system links to each other with the finished product conveying system by finished product hopper 13.
Described revolving bed comprises cloth district 1, the thermal treatment zone 5, high-temperature region 7, soaking zone 8 and discharge zone 9, and cloth district 1, the thermal treatment zone 5, high-temperature region 7, soaking zone 8 and discharge zone 9 join end to end successively; Vibratory sieve 3 and distributing device 2 are installed in the top in cloth district 1, and distributing device 2, vibratory sieve 3 and cloth district 1 link to each other from top to bottom successively, and distributing device 2 links to each other with the hopper 20 of its top pre-heating system; The thermal treatment zone 5 links to each other through high-temperature flue 4 with preheater 21.The furnace roof of the thermal treatment zone 5 and high-temperature region 7 is equipped with top burner 6.The both sides of soaking zone 8 bodies of heater are equipped with heat-accumulating burner 10 and regenerator 11.Revolving bed bed surface one side of discharge zone 9 connects discharging machine 17.
The revolving bed bed surface is comprised of refractory material, and refractory material divides three layers, and the bottom is that light fire brick, middle part are that clay brick, upper surface are high-alumina bricks.
Described pre-heating system comprises hopper 20, preheater 21, charging equipment 22, ore storage bunker 23 and flue 24.Preheater 21 links to each other with distributing device 2 by the hopper 20 of bottom; Preheater 21 bottoms link to each other with the thermal treatment zone 5 of revolving bed through high-temperature flue 4; Preheater 21 tops link to each other with charging equipment 22 through ore storage bunker 23, and the material that charging equipment 22 is carried enters preheater 21 through ore storage bunker 23.
Described charging equipment 22 is belt conveyor.
Described cooling system comprises blower fan 12, finished product hopper 13, cooler 15, blow tank 16 and Secondary Air pipeline 18.Cooler 15 tops link to each other with blow tank 16, and link to each other with the discharging machine 17 of rotating bed equipment by blow tank 16, make high temperature lime flow into cooler 15; The opposite side on cooler 15 tops links to each other with Secondary Air pipeline 18, and second-time burning wind is sent to revolving bed; Cooler 15 bottoms link to each other with finished product hopper 13, and by finished product hopper 13 the good finished product lime of cooling are delivered to the finished product conveying system.One side of cooler 15 bottoms is connected with blower fan 12.
Described revolving bed finished product conveyer 14 is the chain-bucket conveyer.
Described cooler 15 is chain grate formula coolers.Preferred described preheater 21 is chain grate formula preheaters.
Described dust pelletizing system comprises: flue 24, deduster 25, dedusting fan 26 and smoke discharging pipe 27.One end of deduster 25 is connected with preheater 21 through flue 24, and the other end of deduster 25 links to each other with smoke discharging pipe 27 with dedusting fan 26 successively.
Embodiment 2:
A kind of half heat accumulating type rotating bed equipment of the present invention is seen Fig. 1, comprises revolving bed, pre-heating system, cooling system, dust pelletizing system and finished product conveying system; Pre-heating system is in the top position of revolving bed cloth side, and links to each other with revolving bed with vibratory sieve 3 by distributing device 2; Dust pelletizing system links to each other with pre-heating system by flue 24; Cooling system links to each other with blow tank 16 by discharging machine 17 at revolving bed exit side lower position; The finished product conveying system links to each other with cooling system by finished product hopper 13.
Revolving bed comprises cloth district 1, the thermal treatment zone 5, high-temperature region 7, soaking zone 8, discharge zone 9; Cloth district 1, the thermal treatment zone 5, high-temperature region 7, soaking zone 8 and discharge zone 9 join end to end successively.Vibratory sieve 3 and distributing device 2 are installed in the top in cloth district 1, and distributing device 2, vibratory sieve 3 and cloth district 1 link to each other from top to bottom successively, and distributing device 2 links to each other with the hopper 20 of its top pre-heating system.The thermal treatment zone 5 links to each other through high-temperature flue 4 with preheater 21.The furnace roof of the thermal treatment zone 5 and high-temperature region 7 is equipped with top burner 6.The both sides of soaking zone 8 bodies of heater are equipped with heat-accumulating burner 10 and regenerator 11.Revolving bed bed surface one side of discharge zone 9 connects discharging machine 17.
The revolving bed bed surface is comprised of refractory material, and refractory material divides three layers, and the bottom is that light fire brick, middle part are that clay brick, upper surface are high-alumina bricks.
Pre-heating system comprises hopper 20, preheater 21, charging equipment 22, ore storage bunker 23 and flue 24.The hopper 20 of preheater 21 bottoms links to each other with distributing device 2; Preheater 21 bottoms link to each other with high-temperature flue 4; Preheater 21 tops link to each other with ore storage bunker 23; Feeder 22 links to each other with ore storage bunker 23, and the material that charging equipment is carried enters preheater 21 through ore storage bunker 23.
Pre-heating system comprises the two identical preheater 21 of cover and the second preheater A21, the second hopper A20, the second preheater A21, the second charging equipment A22, the second ore storage bunker A23 and the second flue A24, and type of attachment and preheater 21 are identical.Namely the second preheater A21 links to each other with distributing device 2 by the second hopper A20 of bottom; The second preheater A21 bottom links to each other with the thermal treatment zone 5 of revolving bed through high-temperature flue 4; The second preheater A21 top the second ore storage bunker A23 links to each other with the second charging equipment A22, and the material that the second charging equipment A22 carries enters the second preheater A21 through the second ore storage bunker A23.
Described cooling system comprises blower fan 12, finished product hopper 13, cooler 15, blow tank 16 and Secondary Air pipeline 18.Cooler 15 tops link to each other with blow tank 16, and link to each other with the discharging machine 17 of rotating bed equipment by blow tank 16, make high temperature lime flow into cooler 15; The opposite side on cooler 15 tops links to each other with Secondary Air pipeline 18, and second-time burning wind is sent to revolving bed; Cooler 15 bottoms link to each other with finished product hopper 13, and by finished product hopper 13 the good finished product lime of cooling are delivered to the finished product conveying system.One side of cooler 5 bottoms is connected with blower fan 12.
Cooling system comprises the two identical cooler 15 of cover and the second cooler A15, comprise the second blower fan A12, the second finished product hopper A13, the second cooler A15, the second blow tank A16, the second Secondary Air pipeline A18, type of attachment and cooler 15 are identical.That is: the second cooler A15 top links to each other with the second blow tank A16, and links to each other with the discharging machine 17 of rotating bed equipment by the second blow tank A16, makes high temperature lime flow into the second cooler A15; The opposite side on the second cooler A15 top links to each other with the second Secondary Air pipeline A18, and jointly second-time burning wind is sent to revolving bed by triple valve 19 and Secondary Air pipeline 18; The second cooler A15 bottom links to each other with the second finished product hopper A13, and by the second finished product hopper A13 the good finished product lime of cooling is delivered to the finished product conveying system.One side of the second cooler A15 bottom is connected with the second blower fan A12.
Revolving bed finished product conveying system comprises that finished product conveyer 14 is belt material deliverings.
Discharging machine is water-cooled push rod discharging machine.Cooler 15 is shaft coolers.Preheater 21 is shaft preheaters.
Dust pelletizing system comprises: flue 24, deduster 25, dedusting fan 26 and smoke discharging pipe 27.One end of deduster 25 is connected with the second preheater A21 with preheater 21 respectively with the second flue A24 through flue 24.The other end of deduster 25 links to each other with smoke discharging pipe 27 with dedusting fan 26 successively.
Fuel is furnace of calcium carbide coal gas.
Be granularity that 10～100mm lime stone is directly sent into ore storage bunker through charging equipment, then add preheater, high-temperature flue gas (1000～1100 ℃) from revolving bed carries out heat exchange with lime stone in preheater, EGT drops to 180～200 ℃ and is sent to the deduster dedusting; The lime stone 20～30% that is preheating to 800～900 ℃ has decomposed, lime stone small powder granularity 10～30mm after the preheating, middle material granularity is less than 60mm greater than 30mm, large material granularity 60～100mm isolates small powder, middle material, aniseed through distributing device, vibratory sieve, three layers of cloth are on the bed surface of revolving bed, and the bottom of the revolving bed bed surface bed of material is that the middle part of small powder, the bed of material is that the top of middle material, the bed of material is aniseed; Lime stone is at revolving bed process cloth district, the thermal treatment zone, high-temperature region, soaking zone and discharge zone, 850～1000 ℃ of the bed surface temperature of cloth district and discharge zone, 1000～1100 ℃ of thermal treatment zone furnace gas temperatures, 1150～1300 ℃ of high-temperature region furnace gas temperatures, 1000～1100 ℃ of soaking zone furnace gas temperatures; Directly be sprayed onto on the aniseed on upper strata by top burner flame in the thermal treatment zone and high-temperature region, Fast Heating is expected greatly 1000～1200 ℃ of high temperature, and penetrates the material that the bed of material heats middle part and bottom simultaneously, makes material layer temperature even; Burning by heat-accumulating burner flame is flat in the soaking zone, keep 1000～1100 ℃, mainly is to guarantee that surperficial aniseed decomposes fully, finally obtains the industrial lime of high activity high-quality; Discharging machine outputs to cooler to high temperature lime (950～1000 ℃), and cold air and high temperature lime carry out heat exchange in cooler, and revolving bed ℃ is sent to as second-time burning wind in air preheat to 500～700; High temperature lime is from top to bottom motion in cooler, to less than after 80～100 ℃, is delivered to lime finished bin by belt material delivering by Rapid cooling in the air.
The activity of lime finished product is 400～410ml, and chip index 4.2% is given birth to burning 0%.
Embodiment 3:
A kind of half heat accumulating type rotating bed equipment of the present invention, preheater 21 adopt chain grate formula preheater, and discharging machine 17 adopts the water-cooling spiral discharging machine.Fuel adopts blast furnace gas.Other are with embodiment 1.
The activity of lime finished product is 395～399ml, and chip index 3.0% is given birth to burning 0.2%.
Embodiment 4:
A kind of half heat accumulating type rotating bed equipment of the present invention, preheater 21 adopt chain grate formula preheater, and discharging machine 17 adopts water-cooled push rod discharging machine, and cooler 15 adopts chain grate formula cooler.Fuel adopts coal gas of converter.Other are with embodiment 1.
The activity of lime finished product is 405～415ml, and chip index 5.0% is given birth to burning 0%.
Embodiment 5:
A kind of half heat accumulating type rotating bed equipment of the present invention, preheater 21 adopts vertical ore preheater, and discharging machine 17 adopts water-cooled push rod discharging machine, and cooler 15 adopts shaft cooler.Fuel adopts natural gas.Other are with embodiment 1.
The activity of lime finished product is 405～420ml, and chip index 1.5% is given birth to burning 0.3%.
Embodiment 6:
Half heat accumulating type rotating bed equipment of the present invention is used for light dolomite, is about to dolomite at 950～1000 ℃ of mixtures that are sintered into CaO and MgO.Size of Dolomite 10～60mm, be transported to ore storage bunker 23 by belt conveyor 22, high-temperature flue-gas from revolving bed is 900～1000 ℃, high-temperature flue gas carries out heat exchange with dolomite in vertical ore preheater, dolomite is preheating to 700～800 ℃, EGT drops to 150～200 ℃, is sent to deduster 25 dedustings by flue 24.
Less than 30mm, large material granularity 30～60mm divides on three layers of cloth revolving bed bed surface greater than 15mm for dolomite small powder granularity 5～15mm after the preheating, middle material granularity, and the bottom of the bed of material is small powder, and the middle part of the bed of material is middle material, and the top of the bed of material is aniseed.
The revolving bed bed surface is comprised of refractory material, 850～950 ℃ of bed surface temperature, 900～950 ℃ of thermal treatment zone furnace gas temperatures, 1000～1100 ℃ of high-temperature region furnace gas temperatures, 1000～1050 ℃ of soaking zone furnace gas temperatures.
Discharging machine outputs to cooler to light dolomite (900～1000 ℃), air at room temperature is moved upward by the bottom and carries out heat exchange with high temperature lime in cooler, and the high-temp waste gas that forms to cooler top is preheating to 400～600 ℃ to the combustion air from combustion fan through air preheater and is sent to the revolving bed combustion fuel; Light dolomite is from top to bottom motion in cooler, by behind Rapid cooling in the air to 80～100 ℃, delivers to the light dolomite finished bin by belt material delivering.
Other are with embodiment 1.
Claims (12)
1. one and half heat accumulating type rotating bed equipments comprise revolving bed, pre-heating system, cooling system, dust pelletizing system and finished product conveying system; Pre-heating system is in the top position of revolving bed cloth side, and links to each other with revolving bed with vibratory sieve (3) by distributing device (2); Dust pelletizing system links to each other with pre-heating system by flue (24); Cooling system links to each other with cooling system with blow tank (16) by discharging machine (17) at revolving bed exit side lower position; Cooling system links to each other with the finished product conveying system by finished product hopper (13);
Described revolving bed comprises cloth district (1), the thermal treatment zone (5), high-temperature region (7), soaking zone (8) and discharge zone (9), and cloth district (1), the thermal treatment zone (5), high-temperature region (7), soaking zone (8) and discharge zone (9) join end to end successively; Vibratory sieve (3) and distributing device (2) are installed in the top of cloth district (1), and distributing device (2), vibratory sieve (3) link to each other from top to bottom successively with cloth district (1), and distributing device (2) links to each other with the hopper (20) of its top pre-heating system; The thermal treatment zone (5) links to each other through high-temperature flue (4) with preheater (21); The furnace roof of the thermal treatment zone (5) and high-temperature region (7) is equipped with top burner (6); The both sides of soaking zone (8) body of heater are equipped with heat-accumulating burner (10) and regenerator (11); Revolving bed bed surface one side of discharge zone (9) connects discharging machine (17);
The revolving bed bed surface is comprised of refractory material, and refractory material divides three layers, and the bottom is that light fire brick, middle part are that clay brick, upper surface are high-alumina bricks.
2. half heat accumulating type rotating bed equipment as claimed in claim 1, it is characterized in that: described pre-heating system comprises hopper (20), preheater (21), charging equipment (22), ore storage bunker (23) and flue (24); Preheater (21) links to each other with distributing device (2) by the hopper (20) of bottom; Preheater (21) bottom links to each other with the thermal treatment zone (5) of revolving bed through high-temperature flue (4); Preheater (21) top links to each other with charging equipment (22) through ore storage bunker (23), and the material that charging equipment (22) is carried enters preheater (21) through ore storage bunker (23).
3. half heat accumulating type rotating bed equipment as claimed in claim 2, it is characterized in that: described charging equipment (22) is belt conveyor, or the bucket lifting machine equipment.
4. half heat accumulating type rotating bed equipment as claimed in claim 1 or 2, it is characterized in that: described pre-heating system comprises the identical preheater of two covers, the identical preheater of two covers is the first preheater (21) and the second preheater (A21), and described pre-heating system also comprises the second hopper (A20), the second charging equipment (A22), the second ore storage bunker (A23) and the second flue (A24); The second preheater (A21) links to each other with distributing device (2) by second hopper (A20) of bottom; The second preheater (A21) bottom links to each other with the thermal treatment zone (5) of revolving bed through high-temperature flue (4); The second preheater (A21) top the second ore storage bunker (A23) links to each other with the second charging equipment (A22), and the material that the second charging equipment (A22) is carried enters the second preheater (A21) through the second ore storage bunker (A23).
5. half heat accumulating type rotating bed equipment as claimed in claim 1, it is characterized in that: described cooling system comprises blower fan (12), finished product hopper (13), cooler (15), blow tank (16) and Secondary Air pipeline (18); Cooler (15) top links to each other with blow tank (16), and links to each other with the discharging machine (17) of rotating bed equipment by blow tank (16), makes high temperature lime flow into cooler (15); The opposite side on cooler (15) top links to each other with Secondary Air pipeline (18), and second-time burning wind is sent to revolving bed; Cooler (15) bottom links to each other with finished product hopper (13), and by finished product hopper (13) the good finished product lime of cooling is delivered to the finished product conveying system; One side of cooler (15) bottom is connected with blower fan (12).
6. such as claim 1 or 5 described half heat accumulating type rotating bed equipments, it is characterized in that: described cooling system comprises the identical cooler of two covers, the identical cooler of two covers is the first cooler (15) and the second cooler (A15), and described cooling system also comprises triple valve (19); Comprise the second blower fan (A12), the second finished product hopper (A13), the second blow tank (A16), the second Secondary Air pipeline (A18); The second cooler (A15) top links to each other with the second blow tank (A16), and links to each other with the discharging machine (17) of rotating bed equipment by the second blow tank (A16), makes high temperature lime flow into the second cooler (A15); The opposite side on the second cooler (A15) top links to each other with the wind pipeline second time (A18), and jointly second-time burning wind is sent to revolving bed by triple valve (19) and Secondary Air pipeline (18); The second cooler (A15) bottom links to each other with the second finished product hopper (A13), and by the second finished product hopper (A13) the good finished product lime of cooling is delivered to the finished product conveying system; One side of the second cooler (A15) bottom is connected with the second blower fan (A12);
Described finished product conveying system is finished product conveyer (14), and described finished product conveyer is belt material delivering, or the chain-bucket conveyer; Described discharging machine (17) is water-cooled push rod discharging machine, or the water-cooling spiral discharging machine;
Described cooler (15) is shaft cooler, or chain grate formula cooler; Described preheater (21) is shaft preheater, or chain grate formula preheater;
Described dust pelletizing system comprises: flue (24), deduster (25), dedusting fan (26) and smoke discharging pipe (27); One end of deduster (25) is connected with preheater (21) through flue (24), and the other end of deduster (25) links to each other with smoke discharging pipe (27) with dedusting fan (26) successively; One end of deduster (25) is connected with the second preheater (A21) with preheater (21) respectively with the second flue (A24) through flue (24).
7. a manufacturing technique method that rotates height of bed activity lime comprises the steps:
1) lime stone is directly sent into preheater through charging equipment; Or send into ore storage bunker, send into preheater through ore storage bunker;
2) ore preheater be used to the to spin high-temperature flue gas preheating lime stone to 800 of rotated bed～900 ℃;
3) lime stone after the preheating is isolated small powder, middle material, aniseed through distributing device, vibratory sieve, and three layers of cloth are on the bed surface of revolving bed;
4) burning of fuel and combustion air provides heat for revolving bed, lime stone is at revolving bed process cloth district, the thermal treatment zone, high-temperature region, soaking zone and discharge zone, directly be sprayed onto on the aniseed on upper strata by top burner flame in the thermal treatment zone and high-temperature region, Fast Heating aniseed, and penetrate the material that the bed of material heats middle part and bottom simultaneously, make material layer temperature even; Burning by heat-accumulating burner flame is flat in the soaking zone, mainly is to guarantee that surperficial aniseed decomposes fully, finally obtains the industrial lime of high activity high-quality;
5) high temperature lime outputs to cooler by discharging machine, and high temperature lime is used to warm-up combustion-supporting air in cooler, be quickly cooled to simultaneously 80～100 ℃ after by cooler bottom output; The revolving bed high-temperature flue gas is sent to the ore preheater and is used for the preheating lime stone, and heat obtains the high efficiente callback utilization.
8. the manufacturing technique method of rotation height of bed activity lime as claimed in claim 8 is characterized in that, the described limestone granularity of step 1) is 10～200mm;
Step 2) described high-temperature flue gas is from revolving bed, and temperature is 1000～1100 ℃, and high-temperature flue gas carries out heat exchange with lime stone in the ore preheater, lime stone is preheating to 800～900 ℃, and EGT drops to 180～200 ℃ and is sent to the deduster dedusting;
Lime stone small powder granularity 10～30mm after the described preheating of step 3), middle material granularity be greater than 30mm less than 60mm, large material granularity 60～200mm; Described three layers of cloth, namely the bottom of the revolving bed bed surface bed of material is that the middle part of small powder, the bed of material is that the top of middle material, the bed of material is aniseed;
The described gas-burning of step 4) or coal dust; Described fuel gas is selected from furnace of calcium carbide coal gas, blast furnace gas, coal gas of converter, coke-stove gas or natural gas;
The revolving bed bed surface is comprised of refractory material, 850～1000 ℃ of the bed surface temperature of cloth district and discharge zone, 1000～1100 ℃ of thermal treatment zone furnace gas temperatures, 1150～1300 ℃ of high-temperature region furnace gas temperatures, 1000～1100 ℃ of soaking zone furnace gas temperatures;
The described discharging machine of step 5) outputs to cooler to 950～1000 ℃ high temperature lime, and cold air and high temperature lime carry out heat exchange in cooler, and revolving bed ℃ is sent to as second-time burning wind in air preheat to 500～700; High temperature lime is from top to bottom motion in cooler, to less than after 80～100 ℃, is delivered to lime finished bin by belt material delivering by Rapid cooling in the air.
9. such as the application of claim 1-3,5,6 each described rotating bed equipments, it is characterized in that this equipment also is used for light dolomite, with dolomite at 950～1000 ℃ of mixtures that are sintered into CaO and MgO; Dolomite is transported to ore storage bunker by charging equipment, high-temperature flue-gas from revolving bed is 900～1000 ℃, high-temperature flue gas carries out heat exchange with dolomite in vertical ore preheater, dolomite is preheating to 700～800 ℃, flue-gas temperature drops to 150～200 ℃, is sent to the deduster dedusting by flue.
10. the application of rotating bed equipment as claimed in claim 4 is characterized in that, this equipment also is used for light dolomite, with dolomite at 950～1000 ℃ of mixtures that are sintered into CaO and MgO; Dolomite is transported to ore storage bunker by charging equipment, high-temperature flue-gas from revolving bed is 900～1000 ℃, high-temperature flue gas carries out heat exchange with dolomite in vertical ore preheater, dolomite is preheating to 700～800 ℃, flue-gas temperature drops to 150～200 ℃, is sent to the deduster dedusting by flue.
11. the application of rotating bed equipment as claimed in claim 6 is characterized in that, this equipment also is used for light dolomite, with dolomite at 950～1000 ℃ of mixtures that are sintered into CaO and MgO; Dolomite is transported to ore storage bunker by charging equipment, high-temperature flue-gas from revolving bed is 900～1000 ℃, high-temperature flue gas carries out heat exchange with dolomite in vertical ore preheater, dolomite is preheating to 700～800 ℃, flue-gas temperature drops to 150～200 ℃, is sent to the deduster dedusting by flue.
12. application as claimed in claim 9 is characterized in that, the dolomite after the preheating divides on three layers of cloth revolving bed bed surface by small powder, middle material, aniseed, and the bottom of the bed of material is small powder, and the middle part of the bed of material is middle material, and the top of the bed of material is aniseed;
The revolving bed bed surface is comprised of refractory material, 900～950 ℃ of thermal treatment zone furnace gas temperatures, 1000～1100 ℃ of high-temperature region furnace gas temperatures, 1000～1050 ℃ of soaking zone furnace gas temperatures;
Discharging machine outputs to cooler to 900～1000 ℃ light dolomite, air at room temperature is moved upward by the bottom and carries out heat exchange with high temperature lime in cooler, and the high-temp waste gas that forms to cooler top is preheating to 400～600 ℃ to the combustion air from combustion fan through air preheater and is sent to the revolving bed combustion fuel; Light dolomite is from top to bottom motion in cooler, by behind Rapid cooling in the air to 80～100 ℃, delivers to the light dolomite finished bin by belt material delivering.
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| CN201010622799XA CN102183142B (en) | 2010-12-31 | 2010-12-31 | Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime |
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| CN201010622799XA CN102183142B (en) | 2010-12-31 | 2010-12-31 | Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime |
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| CN102183142B true CN102183142B (en) | 2013-03-20 |
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| CN102627414B (en) * | 2012-03-31 | 2013-09-04 | 济钢集团国际工程技术有限公司 | Device for realizing waste heat recovery by directly calcining lime through primary high-temperature flue gas of converter |
| CN103172283B (en) * | 2013-03-28 | 2014-12-10 | 嘉峪关大友嘉镁钙业有限公司 | Calcining method of low carbon high-activity lime |
| CN106977118B (en) * | 2017-03-30 | 2020-02-14 | 鞍钢集团朝阳钢铁有限公司 | Method for calcining lime by converter gas for rotary kiln |
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| CN2463070Y (en) * | 2001-02-13 | 2001-12-05 | 罗贞黎 | Elastic strip screen |
| CN2661689Y (en) * | 2003-08-15 | 2004-12-08 | 中信重型机械公司 | Novel principal machine equipment for producing active lime |
| DE102004018571A1 (en) * | 2004-04-16 | 2005-11-03 | Polysius Ag | Plant and process for the production of cement clinker |
| CN1935725A (en) * | 2005-09-21 | 2007-03-28 | 刘永智 | Environmental-protection energy-saving lime incineration kiln |
| CN101891405B (en) * | 2010-07-10 | 2012-10-03 | 新兴河北工程技术有限公司 | Active lime production plant |
| CN202092458U (en) * | 2010-12-31 | 2011-12-28 | 周生献 | Half regenerative type rotating bed device |
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