CN104164572A - Recovery method for valuable metals in tailings - Google Patents

Recovery method for valuable metals in tailings Download PDF

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Publication number
CN104164572A
CN104164572A CN201410422951.8A CN201410422951A CN104164572A CN 104164572 A CN104164572 A CN 104164572A CN 201410422951 A CN201410422951 A CN 201410422951A CN 104164572 A CN104164572 A CN 104164572A
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China
Prior art keywords
tailings
recovery
lead
ball
gold
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CN201410422951.8A
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Chinese (zh)
Inventor
王云
袁朝新
郭持皓
常耀超
孙留根
李大江
李云
徐晓辉
刘大学
黄海辉
孙聪
余群波
韦其晋
胡磊
王为振
梁东东
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北京矿冶研究总院
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Priority to CN201410422951.8A priority Critical patent/CN104164572A/en
Publication of CN104164572A publication Critical patent/CN104164572A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention discloses a recovery method for valuable metals in tailings, and belongs to the field of treatment for tailings of nonferrous metallurgy. The method comprises the following steps of: mixing the tailings, bentonite and a chlorinating agent, then wet-grinding to generate green balls, drying the green balls and then carrying out chloridizing roasting in a rotary kiln, cooling the roasted balls to obtain qualified pellets, discharging the smoke generated during roasting through multi-stage washing, and conveying smoke dust containing the valuable metals in solution to form recovery solution; filtering the recovery solution to obtain a filter cake, that is, gold-silver-lead residues, and treating the gold-silver-lead residues to recover gold, silver and lead; adsorbing the filtrate after filtering through active carbon, and neutralizing by lime to obtain neutralized filter residue, that is, copper-lead-zinc residues, and treating the copper-lead-zinc residues to recovery copper, zinc and lead; and evaporating and concentrating the filtrate after neutralization, and then recovering the chlorinating agent. The method has the advantages of being low in requirements on the treated raw materials, high in adaptability, short in process flow, low in cost, simple to operate, high in recovery rate, and the like.

Description

The recovery method of valuable metal in tailings
Technical field
The present invention relates to the tailings process field of nonferrous metallurgy, particularly relate to a kind of from tailings the method for comprehensively recovering valuable metal.
Background technology
The main chemical compositions of Non-ferrous Metallurgy tailings is: SiO 2, Fe 2o 3, also contain in addition the valuable metal elements such as Au, Ag, Cu, Pb, Zn, conventionally the grade of gold is in 2~5g/t left and right, have even up to 8~10g/t.This tailings contains abundant valuable metal, is the secondary resource with quite high utility value.
At present, unsatisfactory to utilizing of tailings both at home and abroad.A lot of enterprises directly sell cement mill at a low price by it, and the batching of being used as cement is used, although this method is directly simple, and waste secondary resource; Intensive treatment method needs additive, has not only increased production cost, and can not comprehensively reclaim other valuable metals; Peracid extract technology can efficient recovery gold and silver, also comprehensive other valuable metals of recovery part, but can consume a large amount of sulfuric acid, and follow-up wet processing flow process complexity, waste liquid amount is large, and the processing of waste liquid is also existed to certain difficulty, cost is high simultaneously, long flow path; Add pyrometallurgical smelting stove using tailings as batching, this method can efficient recovery copper, lead, gold and the valuable metal such as silver-colored, but production cost is high, and the loss of metal is large, and increases transportation cost and tailings loss.
Summary of the invention
Based on the existing problem of above-mentioned prior art, the invention provides a kind of simple to operate, cost is low, can comprehensively reclaim in tailings the valuable metals such as gold and silver copper-lead zinc, and the high recovery method of recovery rate of valuable metals in tailings.
For solving the problems of the technologies described above, the invention provides the recovery method of valuable metal in a kind of tailings, comprising:
Tailings, wilkinite and chlorizating agent are mixed and cause green-ball, after described green-ball is dry, in rotary kiln, carry out chloridizing roasting, ball warp after roasting is cooling obtains qualified pelletizing, and the flue gas of roasting is arranged outward through multistage washing, enters washing soln form recovery solution containing the flue dust of valuable metal;
Filter the gold and silver lead skim filter cake that described recovery obtains with solution, described gold and silver lead skim filter cake is processed and reclaimed gold and silver and lead;
Filter described recovery and after charcoal absorption, obtain neutralization filtration copper-lead cadmia with lime neutralization with the filtrate after solution, described filtration copper-lead cadmia is reclaimed to copper by acidic leaching, extraction electrodeposition, raffinate precipitation reclaims zinc, and acid leaching residue recovery is plumbous etc.;
Beneficial effect of the present invention is: the method has, strong adaptability low to the ingredient requirement of processing, and technical process is short, and cost is low, simple to operate, and rate of recovery advantages of higher is especially applicable to processing cyanidation tailings and high-sulfur high ferro Concentrate Roasting Slag.Facts have proved, utilize this recovery method to process cyanidation tailings and high-sulfur Concentrate Roasting Slag, can realize gold, lead recovery is not less than 90%, silver raising recovery rate is not less than 58%, and copper recovery is not less than 80%, and zinc recovery is not less than 70%.
Chlorinating roasting comprehensively reclaims a technique for the valuable metal such as gold and silver copper-lead zinc in tailings, and when iron content in tailings is 55% when above, roasting ball can be used as iron-smelting raw material.The present invention be a kind of have general applicability, can suitability for industrialized production novel process for smelting, the tailings containing valuable metals such as gold and silver having processing requires low, strong adaptability, cost is low, simple to operate and rate of recovery advantages of higher.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The recovery method schematic flow sheet that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to protection scope of the present invention.
The valuable metals such as the embodiment of the present invention provides the recovery method of valuable metal in a kind of tailings, the gold and silver in can efficient recovery tailings, improve the level of resources utilization, and as shown in Figure 1, the method comprises the steps:
After being mixed, tailings (referring to the tailings after nonferrous metals ore is smelted), wilkinite and chlorizating agent cause green-ball, after green-ball is dry, in rotary kiln, carry out chloridizing roasting, ball warp after roasting is cooling obtains qualified pelletizing, the flue gas of roasting is arranged outside multistage washing (washing with water), enters washing soln form recovery solution containing the flue dust of valuable metal;
The filter cake that filtered and recycled obtains with solution is gold and silver lead skim, and gold and silver lead skim is processed and reclaimed gold and silver and lead;
It is copper-lead cadmia that the lime neutralization after charcoal absorption of filtrate after filtration obtains neutralizing filter residue, reclaims this copper-lead cadmia; Directly outer selling of this copper-lead cadmia, reclaims respectively copper, zinc and lead after also can processing this copper-lead cadmia;
Filtrate after neutralization is reclaimed to chlorizating agent after evaporation concentration.
In above-mentioned recovery method; after being mixed, tailings, wilkinite and chlorizating agent cause green-ball to be: by tailings, wilkinite and chlorizating agent to be by weight ratio: tailings: wilkinite: chlorizating agent is: 100:0.5~1:5 mixes; grind kneading to change after its balling property through ball mill profit; again by the material of kneading pelletizing in disk pelletizing machine; make the moisture 10~15Wt% of being of green-ball; the intensity of green-ball is 600~700N/, and green-ball granularity is 8~10mm.
In above-mentioned recovery method, tailings adopts cyanidation tailings and/or high-sulfur high ferro Concentrate Roasting Slag; Chlorizating agent adopts calcium chloride or sodium-chlor.
In above-mentioned recovery method, the dry temperature of green-ball is not more than to 250 DEG C, after being dried, ball is moisture is less than 1%, and the intensity of dry rear ball is 1000~2000N/; The temperature of carrying out chloridizing roasting after green-ball is dry in rotary kiln is 1000~1250 DEG C, pelletizing and air-flow inverse motion, and the intensity of roasting ball is 4000~6500N.
In above-mentioned recovery method, the flue gas of roasting through row outside multistage washing is: flue gas is arranged successively outside after air cooling tower, dynamic wave, packing tower, the multistage washing demist of secondary electricity demist, and when outer row, flue-gas temperature is lower than 40 DEG C.
In above-mentioned recovery method, to gold and silver lead skim processing recovery gold and silver and lead be: gold and silver lead skim is after cyaniding charcoal absorption, and desorb electrodeposition obtains gold mud; Cyanidation tailings obtains after filtration filter cake and is lead skim.
In above-mentioned recovery method, the cooling qualified pelletizing obtaining of ball warp after roasting is as the raw materials recovery utilization of iron work.
Below in conjunction with specific embodiment, the invention will be further described
The embodiment of the present invention provides the recovery method to valuable metals such as gold and silver in a kind of tailings, specifically comprises the following steps:
(1) tailings, wilkinite and calcium chloride are passed through to batching batch mixing, then grind kneading to change its balling property by ball mill profit, form green-ball through material pelletizing in disk pelletizing machine of kneading;
(2) green pellets step (1) being obtained adopts the be dried-cooling technique of rotary kiln chloridizing roasting-cooler of drying grate, makes the pelletizing of qualified intensity; Rotary kiln chloridizing roasting adopts Sweet natural gas or fine coal as the fuel of rotary kiln, in roasting process, makes the gold, silver and bronze zinc lead in green pellets wait valuable metal volatilization to enter flue gas;
(3) flue gas step (2) being obtained passes through the multistage washing outer rows afterwards such as air cooling tower-dynamic wave-packing tower-secondary electricity demist, waits the flue dust of valuable metal to be washed enter washing soln containing gold, silver and bronze zinc lead;
(4) it is gold and silver lead skim that solution step (3) being obtained obtains filter cake by thickening filtration, reclaims this gold and silver lead skim; Can process and reclaim respectively gold and silver and lead this gold and silver lead skim;
Preferably, above-mentioned steps (4) is processed recovery gold and silver and lead to obtaining gold and silver lead skim, can be by cyaniding charcoal absorption, the golden carbon desorb electrodeposition that carries that adsorbs rear formation is obtained to the gold mud containing gold and silver, cyanidation tailings after cyaniding charcoal absorption obtains filter cake through press filtration and is lead skim, lead skim is sold outward or is further purified, and filtrate can be returned and loop cyaniding charcoal absorption.
(5) by filtrate again after charcoal absorption, with in lime and filter, filter cake is copper-lead cadmia, copper, lead and zinc are sold or further reclaimed respectively to copper-lead cadmia outward, filtrate is reclaimed chlorizating agent by evaporation concentration, and the chlorizating agent of recovery can be for the batch mixing of step (1).
Embodiment 1
The present embodiment provides the recovery method of the valuable metal such as gold and silver in a kind of tailings, and tailings is high-sulfur Concentrate Roasting Slag, main component (weight unit is: g/t): Au 2.26, Ag 39.61, Fe 62.13, S 0.54, Cu 0.28, Pb 0.32, Zn 0.35, SiO 25.15, As 0.07, tailings granularity accounts for 90% (refer to 90% tailings below 200 orders) for-200 orders; Utilize mixer by tailings, wilkinite, calcium chloride (chlorizating agent) by the part by weight batch mixing of 100:1:5, after batch mixing, raw material hangs in ore storage bin, continuous-feeding is to disk pelletizing machine, in nodulizer, spray into production water simultaneously, controlling wet bulb group moisture is 10~15%, and granularity is 8~10mm; Wet bulb group sends into drying grate feed bin by belt, regulates drying grate drying treatment amount by adjusting flashboard height (being bed depth), and drying temperature is controlled at below 250 DEG C; Material is sent into rotary kiln chloridizing volatilization after drying, adopts heated by natural gas, flue gas and material counter-current operation, controlling kiln temperature is 1200~1250 DEG C, golden evaporation rate 95.6%, silver-colored evaporation rate 62.5%, copper evaporation rate 83.1%, plumbous evaporation rate 93.9%, zinc evaporation rate 78.2%; Flue gas goes flue gas processing by kiln tail after by drying grate bed of material dried material; Pelletizing enters revolution water cooler after being discharged by rotary kiln, by the indirect cooling material of spraying water outward toward housing; Approximately 80 DEG C of drop temperatures, through diagrid classification, accept is carried and is entered feed bin dress jumbo bag through bucket; Rotary kiln flue gas out, by being arranged outward by induced draft fan after multistage washing tower washing, washing tower slurries are out by pressure filter press filtration, and filter cake cyaniding is processed carbon and is soaked; Filtrate recycles after neutralization.
The pelletizing iron content obtaining is 61%, and copper, lead, zinc are all less than 0.1%, and pellet strength is 4000~6500N, and metallic impurity and pellet strength all reach the requirement of one-level iron fine powder.Gold recovery 93.2% simultaneously, silver raising recovery rate 60%, copper recovery 81.5%, lead recovery 91%, zinc recovery 76.5%.
Embodiment 2
The present embodiment provides the recovery method of the valuable metal such as gold and silver in a kind of tailings, and tailings is cyanidation tailings, main component (weight unit is: g/t): Au 13.2, Ag 13, Fe 43.65, S 2.65, Cu 0.35, Pb 0.21, Zn 0.10, SiO 217.66, As 1.45, tailings granularity-300 order 85%; Adopt the identical step of embodiment 1; In chloridizing roasting process, golden evaporation rate 92%, silver-colored evaporation rate 73%, copper evaporation rate 85%, plumbous evaporation rate 90%, zinc evaporation rate 73.2%; In this technical process, gold recovery 91.2%, the rate of recovery 70% of silver, copper recovery 82.5%, lead recovery 88%, zinc recovery 71.5%.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.

Claims (10)

1. a recovery method for valuable metal in tailings, is characterized in that, comprising:
Tailings, wilkinite and chlorizating agent are mixed and cause green-ball, after described green-ball is dry, in rotary kiln, carry out chloridizing roasting, ball warp after roasting is cooling obtains qualified pelletizing, and the flue gas of roasting is arranged outward through multistage washing, enters washing soln form metal recovery solution containing the flue dust of valuable metal;
Filter described metal recovery solution and obtain gold and silver lead skim filter cake, described gold and silver lead skim filter cake is processed and reclaimed gold and silver and lead;
By filter filtrate after described metal recovery solution after charcoal absorption with obtaining copper-lead cadmia with filtration in lime, reclaim described filter copper-lead cadmia;
To reclaiming chlorizating agent with the rear remaining described filtrate of filtration after evaporation concentration in lime.
2. the recovery method of valuable metal in tailings according to claim 1; it is characterized in that; described will tailings, wilkinite and chlorizating agent cause green-ball to be after mixing: by tailings, wilkinite and chlorizating agent be by weight ratio: tailings: wilkinite: chlorizating agent is: 100:0.5~1:5 mixes; after ball mill profit mill kneading in disk pelletizing machine pelletizing; moisture 10~the 15Wt% of being of green-ball causing; the intensity of green-ball is 600~700N/, and green-ball granularity is 8~10mm.
3. the recovery method of valuable metal in tailings according to claim 1 and 2, is characterized in that, described tailings is cyanidation tailings and/or high-sulfur high ferro Concentrate Roasting Slag.
4. the recovery method of valuable metal in tailings according to claim 1 and 2, is characterized in that, described chlorizating agent adopts: calcium chloride or sodium-chlor.
5. the recovery method of valuable metal in tailings according to claim 1 and 2, is characterized in that, the dry temperature of described green-ball is not more than to 250 DEG C, and after being dried, ball is moisture is less than 1%, and the intensity of dry rear ball is 1000~2000N/.
6. the recovery method of valuable metal in tailings according to claim 1 and 2, it is characterized in that, the temperature of carrying out chloridizing roasting after described green-ball is dry in rotary kiln is 1000~1250 DEG C, pelletizing and described revolution airstream in kiln inverse motion, and the intensity of roasting ball is 4000~6500N.
7. the recovery method of valuable metal in tailings according to claim 1 and 2, it is characterized in that, the flue gas of described roasting through row outside multistage washing is: flue gas is arranged successively outside after air cooling tower, dynamic wave, packing tower, the multistage washing demist of secondary electricity demist, and when outer row, flue-gas temperature is lower than 40 DEG C.
8. the recovery method of valuable metal in tailings according to claim 1 and 2, is characterized in that, described the plumbous filter residue of described gold and silver is processed and reclaimed gold and silver and lead is:
Described gold and silver lead skim is after cyaniding charcoal absorption, and desorb electrodeposition obtains the gold mud containing gold and silver;
Described cyanidation tailings obtains after filtration filter cake and is lead skim.
9. the recovery method of valuable metal in tailings according to claim 1, is characterized in that, the cooling qualified pelletizing obtaining of ball warp after described roasting is as the raw materials recovery utilization of iron work.
10. the recovery method of valuable metal in tailings according to claim 1 and 2, is characterized in that, the described filter copper-lead of described recovery cadmia is:
Reclaim described filter copper-lead cadmia by its direct outer selling;
Or, reclaim described filter copper-lead cadmia it is processed and reclaims respectively copper, lead and zinc.
CN201410422951.8A 2014-08-25 2014-08-25 Recovery method for valuable metals in tailings CN104164572A (en)

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Cited By (20)

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CN104561564A (en) * 2014-12-27 2015-04-29 长安大学 Method for recovering copper, silver and iron from wet zinc smelting rotary kiln slag
CN104561528A (en) * 2015-01-22 2015-04-29 烟台晨昊锌业有限公司 Process for reducing valent elements in cyaniding tailings and innocently treating tailings by using chloridizing roasting method
CN104726716A (en) * 2015-03-31 2015-06-24 招金矿业股份有限公司 Method for extracting gold from cyanidation tailings
CN104846213A (en) * 2015-04-10 2015-08-19 北京矿冶研究总院 Gold concentrate calcine multielement gradient recovery method
CN105112677A (en) * 2015-09-16 2015-12-02 中国地质科学院郑州矿产综合利用研究所 Method for comprehensively recycling valuable metal in gold smelting slag
CN105219973A (en) * 2015-11-04 2016-01-06 北京矿冶研究总院 A kind of method of cyanidation tailings short route fused salt bridge without platform
CN105969979A (en) * 2016-06-03 2016-09-28 新疆星塔矿业有限公司 Method for treating complex gold concentrate cyanidation tailings through microwave chloridizing roasting and volatilization
CN106011486A (en) * 2016-06-03 2016-10-12 新疆星塔矿业有限公司 Recovery technology for metals in gold ore cyanide residue chloridizing volatilization flue gas
CN106086434A (en) * 2016-07-27 2016-11-09 郴州钖涛化工有限公司 A kind of containing arsenic pyrite cinder chlorinated gold extracting technique and flue gas heat method of comprehensive utilization
CN106929667A (en) * 2017-03-13 2017-07-07 江苏省冶金设计院有限公司 A kind of method for processing zinc leaching residue
CN107299220A (en) * 2017-05-25 2017-10-27 江苏省冶金设计院有限公司 A kind of processing method of copper ashes
CN107557570A (en) * 2017-10-30 2018-01-09 北京矿冶研究总院 A kind of method of the comprehensively recovering valuable metal from cyanidation tailings
CN107974559A (en) * 2017-11-20 2018-05-01 中国科学院过程工程研究所 A kind of method that high-quality iron smelting pellets are prepared using pyrite cinder
WO2018120684A1 (en) * 2016-12-29 2018-07-05 荆门市格林美新材料有限公司 Circuit board pyrolysis product briquette and preparation method therefor
CN108251639A (en) * 2017-12-20 2018-07-06 甘肃招金贵金属冶炼有限公司 A kind of method for improving refined gold ore cyaniding tailings volatility
CN108690914A (en) * 2017-04-04 2018-10-23 马守栋 A kind of method that acid-washing waste acid, sludge and copper smelting slag symbiosis Environmental-protection recycling utilize
CN109022811A (en) * 2018-09-26 2018-12-18 王显权 A kind of method that pyrite cinder rotary kiln refines lead
CN109266844A (en) * 2018-09-26 2019-01-25 王显权 A kind of method that pyrite cinder rotary kiln refines copper
CN109423558A (en) * 2017-08-25 2019-03-05 中冶长天国际工程有限责任公司 A kind of technique of municipal administration and metallurgical difficult solid waste collaboration resource utilization
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CN104561564A (en) * 2014-12-27 2015-04-29 长安大学 Method for recovering copper, silver and iron from wet zinc smelting rotary kiln slag
CN104561528A (en) * 2015-01-22 2015-04-29 烟台晨昊锌业有限公司 Process for reducing valent elements in cyaniding tailings and innocently treating tailings by using chloridizing roasting method
CN104726716A (en) * 2015-03-31 2015-06-24 招金矿业股份有限公司 Method for extracting gold from cyanidation tailings
CN104846213B (en) * 2015-04-10 2017-12-15 北京矿冶研究总院 A kind of aurin ore-roasting multielement echelon recovery method
CN104846213A (en) * 2015-04-10 2015-08-19 北京矿冶研究总院 Gold concentrate calcine multielement gradient recovery method
CN105112677A (en) * 2015-09-16 2015-12-02 中国地质科学院郑州矿产综合利用研究所 Method for comprehensively recycling valuable metal in gold smelting slag
CN105219973A (en) * 2015-11-04 2016-01-06 北京矿冶研究总院 A kind of method of cyanidation tailings short route fused salt bridge without platform
CN105969979A (en) * 2016-06-03 2016-09-28 新疆星塔矿业有限公司 Method for treating complex gold concentrate cyanidation tailings through microwave chloridizing roasting and volatilization
CN106011486A (en) * 2016-06-03 2016-10-12 新疆星塔矿业有限公司 Recovery technology for metals in gold ore cyanide residue chloridizing volatilization flue gas
CN105969979B (en) * 2016-06-03 2018-07-27 新疆星塔矿业有限公司 A method of it is volatilized with microwave chloridising roasting and handles complicated golden ore concentrate cyanidation tailings
CN106086434B (en) * 2016-07-27 2018-05-01 郴州钖涛化工有限公司 A kind of the chlorinated gold extracting technique of pyrite cinder containing arsenic and flue gas heat method of comprehensive utilization
CN106086434A (en) * 2016-07-27 2016-11-09 郴州钖涛化工有限公司 A kind of containing arsenic pyrite cinder chlorinated gold extracting technique and flue gas heat method of comprehensive utilization
WO2018120684A1 (en) * 2016-12-29 2018-07-05 荆门市格林美新材料有限公司 Circuit board pyrolysis product briquette and preparation method therefor
CN106929667A (en) * 2017-03-13 2017-07-07 江苏省冶金设计院有限公司 A kind of method for processing zinc leaching residue
CN108690914A (en) * 2017-04-04 2018-10-23 马守栋 A kind of method that acid-washing waste acid, sludge and copper smelting slag symbiosis Environmental-protection recycling utilize
CN107299220A (en) * 2017-05-25 2017-10-27 江苏省冶金设计院有限公司 A kind of processing method of copper ashes
CN109423558A (en) * 2017-08-25 2019-03-05 中冶长天国际工程有限责任公司 A kind of technique of municipal administration and metallurgical difficult solid waste collaboration resource utilization
CN107557570A (en) * 2017-10-30 2018-01-09 北京矿冶研究总院 A kind of method of the comprehensively recovering valuable metal from cyanidation tailings
CN107974559A (en) * 2017-11-20 2018-05-01 中国科学院过程工程研究所 A kind of method that high-quality iron smelting pellets are prepared using pyrite cinder
WO2019114198A1 (en) * 2017-12-13 2019-06-20 北京工业大学 Method for calcining cyanidation slag to recover valuable metals and synchronously prepare ceramsite
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CN108251639A (en) * 2017-12-20 2018-07-06 甘肃招金贵金属冶炼有限公司 A kind of method for improving refined gold ore cyaniding tailings volatility
CN109022811A (en) * 2018-09-26 2018-12-18 王显权 A kind of method that pyrite cinder rotary kiln refines lead
CN109266844A (en) * 2018-09-26 2019-01-25 王显权 A kind of method that pyrite cinder rotary kiln refines copper
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Application publication date: 20141126