CN101423876A - Blast furnace slag treatment and slag heat energy utilization method and implementing apparatus - Google Patents
Blast furnace slag treatment and slag heat energy utilization method and implementing apparatus Download PDFInfo
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- 239000002893 slag Substances 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000009835 boiling Methods 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 11
- 238000005469 granulation Methods 0.000 claims description 10
- 230000003179 granulation Effects 0.000 claims description 10
- 101150038956 cup-4 gene Proteins 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000010881 fly ash Substances 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 238000010025 steaming Methods 0.000 description 5
- 229910000805 Pig iron Inorganic materials 0.000 description 4
- 239000003818 cinder Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000010512 thermal transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention provides a novel method and a device for treating blast furnace slag and recovering slag heat energy. The method designs slag crushing, conveying, filtration, pollution discharge and slag heat utilization to be in one system, thereby achieving all process requirements. The system mainly comprises a cold water pond, a hot water pond, a boiling kettle, a treatment cover, a conveyor, an induced draft fan, a water pump, a dust catcher and other parts. The boiling kettle and the treatment cover are arranged on the upper part of the hot water pond; blast-furnace red liquid slag directly flows into water in the boiling kettle via a slag trough, so as to be soaked; red hot slag is quenched and granulated after meeting water; meanwhile, the water in the kettle is heated to 100 DEG C, starts to boil, and produces a large amount of steam; thus all heat of the slag is converted into hot steam along with the continuous inflow of the slag and the water supplement of the water pump; and the hot steam passes through a pipeline on the upper part of the treatment cover, and is output via the induced draft fan, dedusted, filtered and then utilized. The device has the characteristics that the device saves water, is simple in equipment and small in occupied area, saves investment, reduces sewage discharge, realizes the secondary utilization of blast furnace slag heat, is high in heat recovery efficiency, and has the ideal thermal efficiency of 85 percent.
Description
Technical field the invention belongs to ferrous metallurgy blast furnace slag treating processes, and the secondary energy recovery technology is specifically related to a kind of liquid blast furnace slag heat recovering apparatus.
In the background technology blast furnace ironmaking process, go out molten iron with a large amount of fuel combustion hot melt ore smeltings such as coke, produce a large amount of blast furnace melt cinders in the smelting process simultaneously, these blast furnace slags have a large amount of sensible heats in smelting process.According to the actual blast furnace production data of China, one ton of pig iron of every refining generates the blast furnace slag of about 280-480kg, one ton of pig iron of average every refining is pressed the 380kg slag and is calculated, introduce the hot 1797.4KJ/kg of slag enthalpy according to " iron-making theory ", 1 ton of cast iron dreg enthalpy heat of then every refining is 380kg * 1797.4KJ/kg=683012KJ.Calculate if press 7000 kilocalories/kg of standard coal, the enthalpy heat of the slag that one ton of pig iron of then every refining produces is equivalent to the heat of 23.34kg standard coal.If national pig iron annual production is by 400,000,000 tons of calculating, take away heat because of blast furnace slag and be equivalent to 933.7 ten thousand tons of standard coals every year, calculates by existing coal price to be equivalent to 65.36 hundred million yuan.
Whole nation heat energy of blast furnace utilization ratio is extremely low at present, China's blast furnace slag is handled and is all adopted the water quenching cooling, so-called utilization is exactly that the hot water that produces in the blast furnace water quenching process of cooling of part enterprise carries out warming, owing to be subjected to the restriction of conditions such as heat supply zone, flow, slag heat energy utilization rate less than 15%.And spring, summer, three seasons of autumn can not use, big calorimetric is drained by outer draining, not only contaminate environment but also waste energy.The utilization of blast furnace slag physics heat is one of present iron and steel enterprise important energy saving direction.
The research of blast-furnace cement sensible heat utilization both at home and abroad is many at present.Jiaheng Industry Co., Ltd., Tangshan's 00207372.2 patent disclosure a kind of granulating and vapour-condensing equipment for recovering slags.This method directly the hot steam that produces in the existing blast furnace slag treating processes, is used vapor collection by equipment such as pipeline, U type pipe, steam separator, induced draft fans.The shortcoming of this method is the heat energy that has only reclaimed vapor portion, solved steam and effluxed atmospheric problem, but blast furnace slag heat 90% discharges and is absorbed by water, and the heat energy in the water does not make full use of, and therefore can't calculate the heat energy utilization project of slag fully.University Of Chongqing's 200620110985.4 patent disclosures a kind of blast furnace slag heat reclamation device.This method adopts melt cinder directly in the sealed vessel that swiveling wheel is installed; red warm sludge is fallen on the swiveling wheel and is dished out by the high speed rotating of driven by motor wheel; beginning granulation and cooling; air is heated simultaneously; the air of heat is drawn through blower fan and is entered heat exchanger, and the warm air that heat exchanger exchanges out is used again.Northeastern University's 200510047090.0 patent disclosures a kind of blast furnace slag heat reclamation device.This method adopts high speed rotating granulation wheel with slag particleization, and the slag after the granulation is fallen on the steel band conveyor, produces the heat exchange of gas slag by the blower fan cooling in the course of conveying, and the air of heating is delivered to waste heat boiler and produced steam, and the steam that is used.Russia's RU2018494 patent disclosure a kind of " slag treatment process and device for carrying out said ".This method is that the high-temperature liquid state slag is injected in the cylinder of placement, when slag when steel ball in placing cylinder contacts by chilling, slag is changed into crisp shape plastic stage and is set in spherome surface by liquid state, because the motion of spheroid and collision each other, slag is fractured into the strong solid slag of grain about 700 ℃, and solid slag is transported in the gas slag interchanger continuously carries out heat exchange with recycle gas.
Treating Methods for BF Slag also has several different methods such as Lhasa method (RASA), INBA method, wheel method, Ming Tefa, settling tank.
These methods are summed up, and except that Jiaheng Industry Co., Ltd., Tangshan's vapour-condensing equipment for recovering, substantially all are to adopt the granulating method of different slags earlier the warm sludge granulation, carry out the gas heat exchange then in warm sludge conveying, dropping process, extract slag heat.These methods are owing to adopted granulation, conveying, three steps of heat exchange, process, natural equipment complexity, failure rate height, cost height.
Summary of the invention is at the deficiency of above-mentioned technology, the invention provides a kind of new blast furnace slag processing, slag heat energy recovering method and device, promptly one go on foot steaming process slag treatment facility and technology, this method the fragmentation of slag, conveying, thermal utilization, drag for slag, filtration, blowdown and slag thermal utilization all design in a system, one step was realized whole processing requirements, therefore had unique technology method.The invention solves two key issues of slag processing, energy recovery.The one, the granulation of slag, the 2nd, the energy recovery of slag reclaims the thermo-efficiency height, ideal thermal efficiency 85%.
Slag processing of the present invention, slag heat energy recovering method and device mainly contain following components and form.Feature mainly partly is made up of cooling pond, hot tub, boiling still, processing cup, transfer roller, induced draft fan, water pump, lift, fly-ash separator etc.Hot tub top is equipped with boiling still, processing cup, and processing cup is the encloses container of a steel plate welding, and the boiling still is a container of the lower cone of steel plate welding.In described boiling still, the processing cup transfer roller, drain filter, pump water inlet etc. are installed.Vapour outlet pipeline and electro connecting pressure gauge are arranged at processing cup top, and outlet conduit links to each other with induced draft fan.Top, hot tub ground one side is equipped with blower fan, fly-ash separator, water pump etc.
The present invention requires the slag treatment unit to be arranged near the tap cinder ditch, goes out slag runner and directly enters in the boiling still.
Adopt the present invention to have following advantage:
1, water saving.We know specific heat of water 4.2KJ/Kg. ℃, and the vaporization heat 2263.8KJ/kg of water, 1kg40 ℃ water become 80 ℃ water heat absorption and be 168KJ, and from 80 ℃ of water heat absorption 84KJ that become 100 ℃, 100 ℃ become 100 ℃ of steam heat absorption 2263.8KJ.That is to say that heat that 1kg40 ℃ water becomes vapor absorption is to become 80 ℃ water to absorb 8.98 times of heat.Existing slag treatment process is by shrend, and the water heat absorption makes the slag cooling, and water consumption is inevitable big.And a step vapor method has directly become steam to water by vapor absorption slag heat, so this method water consumption significantly reduces, as calculated slag water ratio 1:0.72 under the perfect condition.Therefore floor space is little, water saving.The steaming process floor space is 1/6 of flush slag approximately, is 1/3 of good permanent method.
2, realized the second stage employ of slag heat energy, the thermo-efficiency height.One step steaming process is gone into the steam that produces heat in the boiled water by slag, extracts the heat energy of slag.Under perfect condition, the water that water pump adds all is converted to hot steam, and the water of boiling pool remains at 100 ℃ of full states, realizes 100% thermal power transfer of slag substantially.The loss of so-called heat mainly be slag tap and slag in the moisture portion of hot of taking away, this part heat accounts for the seldom part of whole slag sensible heats, so the thermo-efficiency height, theoretical thermal efficiency 85%.Although the quality of steam that this method produces is more weaker, steam raising process itself is exactly a water purification process, and steam can satisfy general production application occasion fully through dust removal and filtration, dehydration again.
3, equipment is simple, failure rate is low, reduced investment, practicality.Because a step steaming process is a steam with the slag thermal transition directly; traditional granulation, conveying, three steps of heat exchange are attached to a step; with fragmentation, conveying, the thermal utilization of slag, drag for slag, filtration, blowdown process and be arranged in the system of a sealing, because special technological process makes simple that system becomes.System device is simple, thereby failure rate is low, reduced investment.Because system device is simple, floor space is little, treating processes is in again in the container of sealing fully, therefore can directly be arranged near the blast furnace, can not impact the blast furnace ordinary production, and is therefore economical and practical.
4, pollution is low.Because steam raising itself is exactly the scavenging process of a pulp water, steam has passed through technological processs such as dedusting, filtration, dehydration again simultaneously, therefore can satisfy the needs of general user's steam.This method is separated the vaporescence of steam and integral pond, and steam has almost been taken away whole heat, do not form the heat-processed of slag to whole water, so sump water temperature is low, need not efflux water for cooling.Get back to the pond after the filtration of sewage in the boiling pool through the wash water valve strainer, do not need outer blowdown.Solved draining cooling, sewage discharge secondary pollution, therefore polluted low.
5, allow to be with small amounts of iron in the slag, for iron in the extraction slag has been created favourable condition.Because boiling still, processing cup volume is bigger, be that the container of sealing belongs to bubble slag class, adopted high pressure water to carry out the precrushing of slag simultaneously, even be with a spot of iron in the slag, produce blast and also is difficult to form boiling still, processing cup harm.
Have a spot of iron in the general blast furnace slag, this method strap end behind worm conveyor is very easy to by iron in the electro-magnet extraction slag, has therefore created favourable condition for iron in the blast furnace extraction slag.
6, the steam that produces of the present invention can be used for gas shield refining steel, the generating of metallurgical steelmaking process, the warming of resident, enterprise, winter the thawing and multiple occasion such as insulation of north material, thermal utilization value has a extensive future.
Country has proposed energy-saving and emission-reduction, has reduced the energy consumption strategic task now, new blast furnace slag treatment process method " a step steaming process " is estimated heat energy in the recyclable 70-80% slag, estimates ton iron water saving 10%, 400,000,000 tons of steel were produced in the whole nation in 06 year, about 4,000 ten thousand tons of year water saving.Realizing the heat energy utilization of the slag of blast furnace, reduce the consumption of water, be fit to current form, is that present smelter is energy-conservation, reduction of discharging important development direction, has wide development value.
Description of drawings Fig. 1 is that blast furnace slag of the present invention is handled and slag heat energy utilization method and device for carrying out said structural representation.
Embodiment carries out further the present invention being set forth below in conjunction with the drawings and specific embodiments.
As shown in the figure, treatment unit is arranged in blast furnace residue channel nearby, goes out slag runner and directly enters in system's vapour hood.System mainly partly is made up of cooling pond 1, hot tub 2, boiling still 3, processing cup 4, transfer roller 5, induced draft fan 6, water pump 10, lift 7, fly-ash separator 8 etc., and processing cup 4 is encloses containers.Start water pump 10 still 3 that will seethe with excitement before slag is handled earlier and fill with water, water completely back water pump begins separate unit low discharge high service, full after unnecessary water flow back to hot tub from overflow weir.The blast furnace red melt cinder flows directly in the boiling still 3 through slag runner 9; fall into the water through high pressure water 12 impact grindings in the slag dropping process; steep the slag process; red heat slug is met the water quick cooling granulation; simultaneously water in the still is heated to 100 ℃ and come to life; and produce a large amount of steam, and steam consumption has fallen portion water, and the at this moment used up water yield is the water yield of water pump supply just.That is to say that it is full remaining water in the boiling still, 100 ℃ of boiling states, the water yield of replenishing behind the water pump is all by slag heating having become steam.Like this along with constantly the flowing to of slag, the replenishing of water pump water, the heat of slag all is converted into the steam of heat, and hot steam, is used through fly-ash separator dedusting, the output of dehydration back through induced draft fan 6 outputs through the outlet of processing cup 4 upper pipe.The grain slag that produces promotes by worm conveyor and drags for slag output.
Described transfer roller 5 design transport capacitys are slightly larger than the blast furnace slag quantum of output, that is to say in the boiling still and do not deposit slag, even guarantee that like this slag flow increases several times suddenly and also can not cause the long-pending granulation problem that influences of boiling still slag muck.
This installs described induced draft fan 6 motors and adopts speed control by frequency variation, and by microcomputer automatic control, slag processing cup internal pressure requires steadily balanced and pressure-fired by vapor pressure in the cover, guarantees that the steam that produces both all exports, and does not produce negative pressure and inspiration cold air again.The flow of described water pump water is adjustable, guarantees that the water yield that steam consumption falls in the slag treating processes is the water yield of water pump supply just.
When the molten iron temperature of blast furnace is high, will produce the scum silica frost of proportion less than water, the surface transport machine that these slags swim in water is difficult to carry.This device design is gone up and is considered to adopt the way that regularly discharges water, and the wash water valve 13 by the boiling still regularly discharges water scum silica frost is filtered in the boiling still, exports by transfer roller again.Be discharged in the hot tub after the strainer filtration of sewage through wash water valve in the boiling still, realized the recycle of water.For scum silica frost in the still that prevents to seethe with excitement in top overflows into hot tub, boiling still top is provided with skimming plate, guarantees that scum silica frost preserves in the boiling still.
Because the precipitation of water and slag or part foreign material may enter hot tub, also are provided with throw out lift 7 in the design.Throw out can pass through the labor cleaning, promotes with lift.
After once having gone out iron, switch off the pump, blower fan stops automatically, and a working cycle finishes.
Claims (2)
1, blast furnace slag is handled and slag heat energy utilization method and device for carrying out said, it is characterized in that: comprise special-purpose slag treatment unit, slag heat energy utilization method.Wherein:
(1) the slag treatment unit of described special use partly is made up of cooling pond 1, hot tub 2, boiling still 3, processing cup 4, transfer roller 5, induced draft fan 6, water pump 10, lift 7, fly-ash separator 8 etc., and processing cup 4 is encloses containers.
(2) described slag heat energy utilization method; be by warm sludge directly enter in the processing cup 4 just as in the water in the water container of boiling still 3 shapes; carry out the furnace slag granulating granulation; the process of cooling of quenching by pulp water heats water generates steam; mainly take away slag heat, the method for the steam thermal energy that is used after the steam output by steam.
(3) described according to claim (1).Hot tub top is equipped with boiling still 3, processing cup 4, and processing cup 4 is encloses containers of materials such as a steel plate welding.Transfer roller 5, drain filter, water pump high and low pressure water inlet pipe etc. are installed in described boiling still, the processing cup.Described boiling still and pond branch are arranged, and the water in the slag treating processes in the boiling still is in boiling state.There is the vapour outlet pipeline on described processing cup top and passes through the tensimeter of pressure-controlling blower fan, and outlet conduit links to each other with induced draft fan 6.
(4) comprise worm conveyor and other transfer roller according to the described transfer roller of claim (1).
(5) described according to claim (1) just as devices such as boiling still 3, processing cup 4, transfer roller 5, induced draft fan 6, water pump 10, lift 7, fly-ash separators 8, can be placed in other position according to the position needs, and suitably accept or reject.
(6) also comprise according to the described slag treatment process of claim (2), adopt the high pressure water impact slag, slag is carried out broken method.And a plurality of technological processs, constructional devices such as slag particleization, delivery of steam, slag conveying, blowdown processing be arranged in the system, carry out that slag is handled, the method for thermal utilization.
2,, comprise the slag particleization, the heat energy utilization field that are applied to non-blast furnace according to the described device and method of claim (1) (2).
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881432A (en) * | 2010-08-13 | 2010-11-10 | 邹岳明 | Thermal energy utilization system of high-temperature slag suitable for generating high-pressure heat steam |
| CN102050959A (en) * | 2011-01-28 | 2011-05-11 | 重庆大学 | A method and device for recycling sensible heat of blast furnace slag |
| CN102212627A (en) * | 2011-04-27 | 2011-10-12 | 四川大西绿建科技有限公司 | Device for crushing steel slag and recovering heat |
| RU2448169C2 (en) * | 2009-07-22 | 2012-04-20 | Общество с ограниченной ответственностью "Институт тепловых металлургических агрегатов и технологий "Стальпроект" | Molten slag heat utilisation method |
| CN103196124A (en) * | 2012-01-06 | 2013-07-10 | 姜学仕 | Slag disposing technology device by evaporating pot method |
| CN104329664A (en) * | 2014-10-17 | 2015-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooling flash evaporation bottom slag cooler |
| CN107350261A (en) * | 2015-07-17 | 2017-11-17 | 成都易态科技有限公司 | Industrial slags processing system |
| CN108211706A (en) * | 2018-02-12 | 2018-06-29 | 山东大学 | A kind of desulphurization denitration and wastewater zero discharge system and method for steel industry |
| CN109185889A (en) * | 2018-08-14 | 2019-01-11 | 朋仁锋 | A kind of coal chemical industry solid slag recycling and reusing system |
| CN111719027A (en) * | 2020-05-14 | 2020-09-29 | 成渝钒钛科技有限公司 | Method for recovering high-grade heat energy of blast furnace slag |
| CN112143905A (en) * | 2020-09-28 | 2020-12-29 | 云南锡业股份有限公司冶炼分公司 | Device for removing low-density scum in metal refining process |
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- 2007-11-01 CN CNA2007101578733A patent/CN101423876A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2448169C2 (en) * | 2009-07-22 | 2012-04-20 | Общество с ограниченной ответственностью "Институт тепловых металлургических агрегатов и технологий "Стальпроект" | Molten slag heat utilisation method |
| CN101881432A (en) * | 2010-08-13 | 2010-11-10 | 邹岳明 | Thermal energy utilization system of high-temperature slag suitable for generating high-pressure heat steam |
| CN102050959A (en) * | 2011-01-28 | 2011-05-11 | 重庆大学 | A method and device for recycling sensible heat of blast furnace slag |
| CN102050959B (en) * | 2011-01-28 | 2012-08-22 | 重庆大学 | Method and device for recovering sensible heat of blast furnace slag |
| CN102212627A (en) * | 2011-04-27 | 2011-10-12 | 四川大西绿建科技有限公司 | Device for crushing steel slag and recovering heat |
| CN102212627B (en) * | 2011-04-27 | 2013-01-02 | 四川大西绿建科技有限公司 | Device for crushing steel slag and recovering heat |
| CN103196124A (en) * | 2012-01-06 | 2013-07-10 | 姜学仕 | Slag disposing technology device by evaporating pot method |
| CN103196124B (en) * | 2012-01-06 | 2015-04-22 | 姜学仕 | Slag disposing technology device by evaporating pot method |
| CN104329664A (en) * | 2014-10-17 | 2015-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooling flash evaporation bottom slag cooler |
| CN107350261A (en) * | 2015-07-17 | 2017-11-17 | 成都易态科技有限公司 | Industrial slags processing system |
| CN107350261B (en) * | 2015-07-17 | 2019-10-08 | 成都易态科技有限公司 | Industrial slags processing system |
| CN108211706A (en) * | 2018-02-12 | 2018-06-29 | 山东大学 | A kind of desulphurization denitration and wastewater zero discharge system and method for steel industry |
| CN109185889A (en) * | 2018-08-14 | 2019-01-11 | 朋仁锋 | A kind of coal chemical industry solid slag recycling and reusing system |
| CN111719027A (en) * | 2020-05-14 | 2020-09-29 | 成渝钒钛科技有限公司 | Method for recovering high-grade heat energy of blast furnace slag |
| CN112143905A (en) * | 2020-09-28 | 2020-12-29 | 云南锡业股份有限公司冶炼分公司 | Device for removing low-density scum in metal refining process |
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