CN103911506A - Lifting, air-regulating, heat-replenishing, roasting and decarburizing method of carbon-containing gold mine - Google Patents
Lifting, air-regulating, heat-replenishing, roasting and decarburizing method of carbon-containing gold mine Download PDFInfo
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- CN103911506A CN103911506A CN201410155534.1A CN201410155534A CN103911506A CN 103911506 A CN103911506 A CN 103911506A CN 201410155534 A CN201410155534 A CN 201410155534A CN 103911506 A CN103911506 A CN 103911506A
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- rotary kiln
- kiln
- calcination rotary
- roasting
- calcination
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000010931 gold Substances 0.000 title claims abstract description 52
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 52
- 238000002386 leaching Methods 0.000 claims abstract description 19
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 238000001354 calcination Methods 0.000 claims description 82
- 238000010438 heat treatment Methods 0.000 claims description 43
- 238000005261 decarburization Methods 0.000 claims description 13
- 239000000567 combustion gas Substances 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 206010037660 Pyrexia Diseases 0.000 claims description 4
- 239000003034 coal gas Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 description 7
- 238000005262 decarbonization Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a lifting, air-regulating, heat-replenishing, roasting and decarburizing method of a carbon-containing gold mine. A roasting facility capable of lifting a material in the roasting facility so that the material can be in contact with airflow in the roasting facility to the most extent is adopted in the method. According to the invention, a lifting plate is arranged in a roasting rotary kiln, and the temperature (650-850 DEG C) and the atmosphere (O2 is more than or equal to 20%) in the roasting facility are regulated by regulating the replenished air volume and the replenished heat in the roasting facility; the roasting process is ensured by regulating the roasting time (150-240 min). Compared with roasted products produced by adopting the carbon-containing gold mine roasting process free from lifting, regulating air and replenishing heat, the cyanide leaching rate of gold can be greatly increased.
Description
Technical field
The invention belongs to the decarburization production technical field of Carbonaceous gold ore, be specifically related to a kind of Carbonaceous gold ore lifting and adjust the method for wind concurrent heating roasting decarburization.
Background technology
The Cyanide Leaching of gold is the now widely used technology for gold of carrying, and Carbonaceous gold ore, because carbon exists interference effect in golden cyanidation-leaching process, has had a strong impact on the leaching yield of golden Cyanide Leaching, and therefore Carbonaceous gold ore must carry out decarburization roasting before Cyanide Leaching.The object of gold mine roasting is to remove the harmful element of smelting gold process, beyond de-carbon, also comprises sulphur, arsenic etc., and industrialized gold mine sinter process mainly contains at present: rotary kiln baking, Flash Smelting Furnace roasting, boiling roaster etc.The industrialization of these sinter processs is mainly used in desulfurization, the dearsenification roasting of (sulfur-bearing, arsenic) gold mine, the industrialization report of Carbonaceous gold ore decarburization roasting only shows in " non-ferrous metal engineering " magazine in April, 2012, in paper " certain is containing a charcoal gold mine roasting expanding test design and interpretation of result " literary composition of being write by the author.This project is gone into operation at the beginning of 2013, because designed decarbonization process system is to adopt traditional rotary kiln baking, can not effectively regulate temperature and atmosphere in kiln, be difficult to guarantee that the gold mine material in kiln fully contacts with air-flow, cause sinter process effect unsatisfactory, the leaching yield of the golden calcining of Carbonaceous gold ore roasting output gold in cyanidation-leaching process is very undesirable, therefore imperative for the decarburization sinter process innovation of Carbonaceous gold ore.
And applicant finds to adopt separately adjust wind or adopt separately concurrent heating realizing in the industrialized production process of Carbonaceous gold ore decarburization calcination rotary kiln, or adopt separately lifting, or the operation of combination between two can not meet production requirement.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, and a kind of roasting method of Carbonaceous gold ore is provided.
In order to achieve the above object, technical scheme provided by the invention is:
Described Carbonaceous gold ore lifting adjusts the method for wind concurrent heating roasting decarburization to comprise the steps:
(1) Carbonaceous gold ore is crushed to granularity≤8mm, will roasting material; Want corning ore deposit after pulverize for dense form Carbonaceous gold ore;
(2) material is added to roasting in calcination rotary kiln;
In described calcination rotary kiln, be provided with material delivering plate; Material delivering plate is kicked up the material in calcination rotary kiln to vertex in calcination rotary kiln, material straight line to be fallen, and material contacts with air-flow in calcination rotary kiln;
When temperature in calcination rotary kiln is during lower than 620～850 ℃, to carrying out concurrent heating in calcination rotary kiln, when temperature in calcination rotary kiln is during higher than 620～850 ℃, in calcination rotary kiln, adjust wind; As O in calcination rotary kiln kiln exhaust gas atmosphere
2≤ 19.5% time, in calcination rotary kiln, adjust wind equally, make O
2>=20%;
Wherein, straight tube wind form or the leeward form of kiln for described tune elegance: described straight tube wind form is at calcination rotary kiln kiln hood and kiln tail, air feed straight tube to be set respectively to adjust wind in to calcination rotary kiln; The leeward form of described kiln be calcination rotary kiln kiln back install blower fan, by blower fan to adjusting wind in calcination rotary kiln;
Described concurrent heating adopts combustion gas concurrent heating mode or hot blast concurrent heating mode: described combustion gas concurrent heating mode is the one or both ends that coal gas or natural gas combustion nozzle are arranged on to calcination rotary kiln, by regulating the gas flow of burner to carrying out concurrent heating in calcination rotary kiln; Described hot blast concurrent heating mode is to utilize the hot blast of output in production system or construction fever wind furnace system produce hot blast to carrying out concurrent heating in calcination rotary kiln;
(3) discharge end that makes to rush calcination rotary kiln through the material of roasting flows out, and enters Cyanide Leaching operation (Cyanide Leaching operation is this area routine techniques means) after cooling.
Preferably, the residence time of described material in calcination rotary kiln is 150min～240min.
Preferably, the residence time of described material in calcination rotary kiln is 180min～240min.
The residence time is determined with roasting effect.
Preferably, the described set temperature value of step (2) is 620～780 ℃.
Preferably, described calcination rotary kiln comprises cylinder of rotary kiln, kiln end sealing device, kiln head cover, primary ignition fuel burner nozzle, secondary air device on kiln body, temperature measuring equipment, power transmission slip-ring device and the support roller supporting of being located at rotary kiln bottom; Described cylinder of rotary kiln is provided with the sleeve pipe passing in kiln; In described sleeve pipe, be provided with by sleeve pipe and stretch into the fixed leg in kiln, between fixed leg and sleeve pipe, having annular space; Described fixed leg stretches out one end outside stretching out cylinder of rotary kiln with sleeve pipe, one end outside cylinder of rotary kiln and is connected; The described one end stretched in cylinder of rotary kiln of fixing is provided with material delivering plate.
Preferably, described fixed leg comprises fixed leg body and fixed leg external end head; The diameter of described fixed leg external end head is greater than the diameter of fixed leg body; Described fixed leg external end head and telescopic joint.
Preferably, the junction of described fixed leg external end head and sleeve pipe is provided with adjusting pad.
Preferably, in the annular space between described fixed leg and sleeve pipe, be filled with lagging material.
Wherein, described cylinder of rotary kiln, kiln end sealing device, kiln head cover, primary ignition fuel burner nozzle, secondary air device on kiln body, the structure of temperature measuring equipment and power transmission slip-ring device is identical with rotary kiln described in Chinese patent ZL200820159159.8.
Below in conjunction with principle, the invention will be further described:
In the course of industrialization that raw material using Carbonaceous gold ore as gold smelting extracts gold from, the Cyanide Leaching of gold mine that had severe jamming due to carbon in gold mine, thereby have influence on the rate of recovery of gold, therefore must carry out decarburization calcination process to Carbonaceous gold ore, just can carry out follow-up Cyanide Leaching and extract gold from.
Carbon containing roasting process is the reaction process of oxygen in the contained carbon of gold mine and air, and therefore the atmosphere in air supply amount and the container of its decarbonization degree (carbon-drop rate) and calcination vessel is relevant.
In Carbonaceous gold ore, in contained carbon and air, the decarburization of the reaction process gold mine of oxygen must be carried out within the regular hour, and the time that therefore its decarbonization degree (carbon-drop rate) stops in calcination vessel with gold mine is relevant.
In Carbonaceous gold ore, in contained carbon and air, the reaction process of oxygen must carry out just reaching its best in certain temperature range, therefore its decarbonization degree (carbon-drop rate) with gold mine the temperature range in calcination vessel relevant.
Based on the consideration of above-mentioned factor, the present invention has set up material delivering plate in traditional calcination rotary kiln, guarantees that the gold mine material in rotary kiln can fully contact with air-flow.Secondly, the present invention has set up tune wind heat patching device outward at traditional calcination rotary kiln, and includes the control of adjusting wind heat patching device in computer-controlled program, can realize according to the particular case in kiln and regulate air quantity and heat.Adjust wind action to have two, one is the atmosphere in regulating kiln; Another is kiln temperature when too high, adds cold wind to reduce kiln temperature and regulates the temperature in kiln; When the effect of concurrent heating is that kiln temperature is too low, additional heat rising kiln temperature regulates the temperature in kiln, guarantees that carbon in stone Carbonaceous gold ore generates carbonic acid gas and volatilized in desirable temperature range.
Wherein, air register can adopt two kinds of forms: 1. straight tube wind form, kiln hood and kiln tail install respectively air feed straight tube directly according to kiln in situation air feed, the shortcoming of this air feed form is that air feed point is few, air feed effect is undesirable, and its advantage is reduced investment, generally only for rotary furnace roasting.2. the leeward form of kiln, installs blower fan at kiln back, and according to situation in kiln, by the leeward machine air feed of kiln, the advantage of this form is that multiple air feed points can be set as required, and air feed is satisfactory for result and be not subject to the impact of kiln length; Shortcoming is higher compared with the investment of straight tube wind form.
Heat patching device can be taked following form: 1. combustion gas concurrent heating, combustion gas concurrent heating is to carry out concurrent heating take combustion gas as thermal source, conventionally coal gas or natural gas combustion nozzle are arranged on to the one or both ends of roasting kiln, open and regulate the flow of its combustion gas to carry out concurrent heating according to the particular case of roasting.2. hot blast concurrent heating, utilizes the hot blast of output in production system or the concurrent heating that construction fever wind furnace system produce hot blast carries out Carbonaceous gold ore decarburization roasting process to be referred to as hot blast concurrent heating.
Only have and the material delivering plate in rotary kiln baking facility and rotary kiln baking facility have been set up to tune wind heat patching device outward coordinate and carry out, and the rotating speed (rotating speed of 0～motor nameplate) of controlling roasting kiln with buncher just may reach desirable roasting effect to reach in the object situation of controlling roasting time.
In a word, the present invention adopt a kind of can make material in roasting facility kick up to allow its material can with roasting facility in the roasting facility that at utmost comes in contact of air-flow.The present invention arranges material delivering plate in calcination rotary kiln, and this calcination rotary kiln is combined with adjusting wind heat patching device, by regulating supply air quantity and additional heat in roasting facility to regulate temperature (650 ℃～850 ℃) and the atmosphere (O in roasting facility
2>=20%).By regulating roasting time (150min～240min) to guarantee the carrying out of roasting process.The inventive method does not adopt lifting to adjust the calcining of the Carbonaceous gold ore sinter process output of wind concurrent heating compared with other, and the cyanide leaching of gold can be greatly enhanced.
Accompanying drawing explanation
Fig. 1 is the structure iron of calcination rotary kiln of the present invention;
Fig. 2 is the A-A sectional view (material delivering plate) of Fig. 1;
Fig. 3 is the I place partial enlarged drawing of Fig. 2.
In figure, 1, cylinder of rotary kiln; 2, kiln end sealing device; 3, kiln head cover; 4, primary ignition fuel burner nozzle; 5, secondary air device on kiln body; 6, temperature measuring equipment; 7, power transmission slip-ring device; 8, support roller supporting; 9, material delivering plate; 10, fix; 11, sleeve pipe; 12, adjusting pad; 13, fixed leg body; 14, fixed leg external end head; 15, air compensation device.
Embodiment
embodiment 1
Described Carbonaceous gold ore lifting adjusts the method for wind concurrent heating roasting decarburization to comprise the steps:
(1) Carbonaceous gold ore is crushed to granularity≤8mm, will roasting material; Want corning ore deposit after pulverize for dense form Carbonaceous gold ore;
(2) by material being added to roasting in calcination rotary kiln after the metering of metered charge device; Calcination rotary kiln rotating speed is controlled the residence time of material in kiln in kiln by frequency control motor control to reach.If need to shorten the residence time, just improve the rotating speed of kiln, the move down speed of material in kiln is accelerated; Otherwise reduce the rotating speed of kiln, make to move down speed in material kiln and slow down;
In described calcination rotary kiln, be provided with material delivering plate 9; Material delivering plate is kicked up the material in calcination rotary kiln to vertex in calcination rotary kiln, material straight line to be fallen, and material contacts with air-flow in calcination rotary kiln;
Material delivering plate 9 is kicked up the material in calcination rotary kiln to vertex in calcination rotary kiln, material straight line to be fallen, and material fully contacts with air-flow in calcination rotary kiln;
When temperature in calcination rotary kiln is during lower than 620～850 ℃, to carrying out concurrent heating in calcination rotary kiln, when temperature in calcination rotary kiln is during higher than 620～850 ℃, in calcination rotary kiln, adjust wind; As O in calcination rotary kiln kiln exhaust gas atmosphere
2≤ 19.5% time, in calcination rotary kiln, adjust wind equally, make O
2>=20%;
Wherein, straight tube wind form or the leeward form of kiln for described tune elegance: described straight tube wind form is at calcination rotary kiln kiln hood and kiln tail, air feed straight tube to be set respectively to adjust wind in to calcination rotary kiln; The leeward form of described kiln be calcination rotary kiln kiln back install blower fan, by blower fan to adjusting wind in calcination rotary kiln;
Described concurrent heating adopts combustion gas concurrent heating mode or hot blast concurrent heating mode: described combustion gas concurrent heating mode is the one or both ends that coal gas or natural gas combustion nozzle are arranged on to calcination rotary kiln, by regulating the gas flow of burner to carrying out concurrent heating in calcination rotary kiln; Described hot blast concurrent heating mode is to utilize the hot blast of output in production system or construction fever wind furnace system produce hot blast to carrying out concurrent heating in calcination rotary kiln;
(3) make through the material of roasting rush calcination rotary kiln discharge end flow out, after cooling drum machine is cooling, be transported to Cyanide Leaching operation by rotary conveyor.
Wherein, described calcination rotary kiln comprises cylinder of rotary kiln 1, kiln end sealing device 2, kiln head cover 3, primary ignition fuel burner nozzle 4, secondary air device 5 on kiln body, temperature measuring equipment 6, power transmission slip-ring device 7 and the support roller supporting 8 of being located at rotary kiln bottom; Described cylinder of rotary kiln 1 is provided with the sleeve pipe 11 passing in kiln; In described sleeve pipe 11, be provided with by sleeve pipe 11 and stretch into the fixed leg 10 in kiln, between fixed leg 10 and sleeve pipe 11, having annular space; Described fixed leg 10 stretches out one end outside stretching out cylinder of rotary kiln 1 with sleeve pipe 11, one end outside cylinder of rotary kiln 1 and is connected; Described 10 one end stretched in cylinder of rotary kiln 1 of fixing are provided with material delivering plate 9.
Described fixed leg 10 comprises fixed leg body 13 and fixed leg external end head 14; The diameter of described fixed leg external end head 14 is greater than the diameter of fixed leg body 13; Described fixed leg external end head 14 is connected with sleeve pipe 11.Described fixed leg external end head 14 is provided with adjusting pad 12 with the junction of sleeve pipe 11.In annular space between described fixed leg 10 and sleeve pipe 11, be filled with lagging material.
And do not consider in the engineering design of concurrent heating only having considered to adjust wind, kiln not can drive; Adjust at the same time in the engineering design of wind and concurrent heating, although kiln has driven, its effect is unsatisfactory, and its cyanide leaching only has 30% left and right; And the present invention adopts lifting, adjusts wind and concurrent heating simultaneously, after lifting, tune wind, concurrent heating roasting, its cyanide leaching reaches more than 50%, that is to say, has increased more than 10%.The inventive method has greatly improved the leaching yield of golden calcining gold in cyanidation-leaching process of Carbonaceous gold ore roasting output.
Claims (8)
1. a method for wind concurrent heating roasting decarburization is adjusted in Carbonaceous gold ore lifting, it is characterized in that, described method comprises the steps:
(1) Carbonaceous gold ore is crushed to granularity≤8mm, will roasting material;
(2) material is added to roasting in calcination rotary kiln;
In described calcination rotary kiln, be provided with material delivering plate; Material delivering plate is kicked up the material in calcination rotary kiln to vertex in calcination rotary kiln, material straight line to be fallen, and material contacts with air-flow in calcination rotary kiln;
When temperature in calcination rotary kiln is during lower than 620～850 ℃, to carrying out concurrent heating in calcination rotary kiln, when temperature in calcination rotary kiln is during higher than 620～850 ℃, in calcination rotary kiln, adjust wind; As O in calcination rotary kiln kiln exhaust gas atmosphere
2≤ 19.5% time, in calcination rotary kiln, adjust wind equally, make O
2>=20%;
Wherein, straight tube wind form or the leeward form of kiln for described tune elegance: described straight tube wind form is at calcination rotary kiln kiln hood and kiln tail, air feed straight tube to be set respectively to adjust wind in to calcination rotary kiln; The leeward form of described kiln be calcination rotary kiln kiln back install blower fan, by blower fan to adjusting wind in calcination rotary kiln;
Described concurrent heating adopts combustion gas concurrent heating mode or hot blast concurrent heating mode: described combustion gas concurrent heating mode is the one or both ends that coal gas or natural gas combustion nozzle are arranged on to calcination rotary kiln, by regulating the gas flow of burner to carrying out concurrent heating in calcination rotary kiln; Described hot blast concurrent heating mode is to utilize the hot blast of output in production system or construction fever wind furnace system produce hot blast to carrying out concurrent heating in calcination rotary kiln;
(3) discharge end that makes to rush calcination rotary kiln through the material of roasting flows out, and enters Cyanide Leaching operation after cooling.
2. the method for claim 1, is characterized in that, the residence time of described material in calcination rotary kiln is 150min～240min.
3. method as claimed in claim 2, is characterized in that, the residence time of described material in calcination rotary kiln is 180min～240min.
4. the method for claim 1, is characterized in that, the described set temperature value of step (2) is 620～780 ℃.
5. the method for claim 1, it is characterized in that, described calcination rotary kiln comprises cylinder of rotary kiln (1), kiln end sealing device (2), kiln head cover (3), primary ignition fuel burner nozzle (4), secondary air device (5) on kiln body, temperature measuring equipment (6), power transmission slip-ring device (7) and be located at the support roller supporting (8) of rotary kiln bottom; Described cylinder of rotary kiln (1) is provided with the sleeve pipe (11) passing in kiln; In described sleeve pipe (11), be provided with by sleeve pipe (11) and stretch into the fixed leg (10) in kiln, between fixed leg (10) and sleeve pipe (11), having annular space; Described fixed leg (10) stretches out the outer one end of cylinder of rotary kiln (1) and stretches out cylinder of rotary kiln (1) one end outward with sleeve pipe (11) and be connected; One end that described fixing (10) stretched in cylinder of rotary kiln (1) is provided with material delivering plate (9).
6. method as claimed in claim 5, is characterized in that, described fixed leg (10) comprises fixed leg body (13) and fixed leg external end head (14); The diameter of described fixed leg external end head (14) is greater than the diameter of fixed leg body (13); Described fixed leg external end head (14) is connected with sleeve pipe (11).
7. method as claimed in claim 6, is characterized in that, described fixed leg external end head (14) is provided with adjusting pad (12) with the junction of sleeve pipe (11).
8. calcination rotary kiln as claimed in claim 7, is characterized in that, in the annular space between described fixed leg (10) and sleeve pipe (11), is filled with lagging material.
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| CN201410155534.1A CN103911506B (en) | 2014-04-18 | 2014-04-18 | The method of wind concurrent heating roasting decarburization is adjusted in a kind of Carbonaceous gold ore lifting |
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Cited By (1)
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| CN114774677A (en) * | 2022-03-27 | 2022-07-22 | 山西太钢万邦炉料有限公司 | Method for quickly heating roasting furnace |
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