CN104004918A - Method for collocation treatment of kiln slag with copper blast furnace - Google Patents
Method for collocation treatment of kiln slag with copper blast furnace Download PDFInfo
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- CN104004918A CN104004918A CN201410183261.1A CN201410183261A CN104004918A CN 104004918 A CN104004918 A CN 104004918A CN 201410183261 A CN201410183261 A CN 201410183261A CN 104004918 A CN104004918 A CN 104004918A
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Abstract
A method for collocation treatment of kiln slag with a copper blast furnace comprises the following steps: 1) taking a proper amount of the kiln slag, wherein the water content is required to be less than 8% and the particle size is required to be 4 mm-100 mm; 2) taking four materials comprising 76.8-86.5% of a copper material, 4.7-12.0% of the kiln slag, 6.2-6.9% of a fusing agent and 8.7-9.3% of carbon coke, and allowing to go into the copper blast furnace in a layered mode with the material batch as a unit for smelting; 3) closing the copper blast furnace, and smelting; and 4) smelting the kiln slag, the copper material and the fusing agent by the copper blast furnace to obtain a gold-silver containing copper matte, smoke dust and water-quenched slag; recycling valuable elements of gold, silver and copper in the gold-silver containing copper matte, then taking the gold-silver containing copper matte directly as a raw material for converting copper; recycling a valuable element lead in the smoke dust, then taking the smoke dust directly as a raw material for smelting lead; and allowing the water-quenched slag to be sold to outside and applied in other industries. The method has the advantages of simple process, low smelting cost and no corrosion, the utilization rate of fixed carbon in the kiln slag reaches up to 98% or more, the recovery rate of Cu is 65% or more, the recovery rate of Ag is 90% or more, and the recovery rate of Au is 96% or more.
Description
Technical field
The present invention relates to Metal smelting technical field, particularly relate to a kind of method of processing kiln slag with copper blast-furnace collocation.
Background technology
Kiln slag is that acid leaching residue is allocated the coke powder that accounts for its weight 45%～55% into, what in Rotary Kiln, after the high temperature reduction of 1100～1300 DEG C volatilizees the metals such as zinc, lead, cadmium, indium, shrend formed.Because the kiln slag of output contains the valuable metal elements such as higher copper, lead, zinc, gold and silver conventionally, be therefore necessary kiln slag to process, with the above-mentioned valuable metal of effective enriching and recovering.Kiln slag treatment process is divided into chemical smelting process and physical separation method, and chemistry is smelted and is divided into again wet method and pyrogenic process.Wet method has hydrochloric acid leaching process, segregation-flotation process, Bioleaching method etc.; Pyrogenic process has ore dressing-chlorinating roasting, submergence smelting process, chlorination-sulfurization roasting method, sintering-Blast Furnace Method, base husband Saite method etc.Physical separation method has magnetic separation-screening-air blast process and fragmentation-ball milling-magnetic separation-gravity separation method.
Existing kiln slag treatment process mainly adopts sintering-Blast Furnace Method, base husband Saite method, magnetic separation-screening-air blast process and fragmentation-ball milling-magnetic separation-gravity separation method.
Sintering-Blast Furnace Method is first in kiln slag, to add lead ore concentrate or pyrite to carry out sintering, then the lead bullion forming in fusion process with blast furnace or matte trap copper, gold and silver.Its shortcoming is that the matte grade of output is low, needs continuous enrichment more than twice, and technique is tediously long, and equipment is huge, increases the quantity of slag, causes copper, silver loss; Carbon in kiln slag consumes in sintering, needs again to add 17% coke when blast furnace smelting, and energy consumption is large; Arsenic, sulphur pollution environment in treatment scheme; Dissipated metal does not obtain effective enriching and recovering; Economical effectiveness is undesirable.
Kazakhstan, in base husband Saite stove Process of Direct Lead Smelting process, replaces coke with kiln slag, and design coke consumption is 36kg/t furnace charge, changes into after kiln slag, and coke consumption is zero, and the collocation consumption of kiln slag is 2～3.5 ten thousand t.Although kiln slag metal recovery rate and coke utilization ratio are very high, collocation amount is limited.
The equipment failure of magnetic separation-screening-air blast process is many, and power consumption is large, and dust pollution is serious, and end-use is limited.
Fragmentation-ball milling-magnetic separation-gravity separation method is difficult to valuable metal and iron to separate, and obtains product even if select iron to separate, and all contains a certain amount of valuable metal gold and silver in every kind of product, can not realize effective enrichment of valuable metal, and lower to the utilising efficiency of fixed carbon.
Summary of the invention
Technical problem to be solved by this invention is, overcome the above-mentioned deficiency of prior art, provide a kind of technique simple, melting cost is low, corrosion-free, the method with copper blast-furnace collocation processing kiln slag of easy handling, the rate of recovery of gold and silver, copper in raising kiln slag, in cigarette ash, lead is carried out to enrichment simultaneously, and high to the utilising efficiency of fixed carbon.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method of processing kiln slag with copper blast-furnace collocation, comprises the steps:
1) get kiln slag appropriate, moisture requirement is less than 8%, is mass percent, and granularity requirements is at 4mm～100mm;
2) get copper material 76.8～86.5%(and be preferably 80 ~ 86%), kiln slag 4.7～12.0%(is preferably 5.0% ~ 11.0%), flux 6.2～6.9%, coke 8.7～9.3% 4 kind of material, be mass percent, enter melting in copper blast-furnace taking charge as unit layering;
3) airtight copper blast-furnace melting, the processing condition of copper blast-furnace melting are: focal area temperature is 1200～1300 DEG C (being preferably 1220～1280 DEG C), and blast volume is 10000～13000m
3/ h(is preferably 11000～12000m
3/ h), stock column is high is 2.5～2.7m, melting cycle is that 100～150min(is preferably 110～140min);
4) kiln slag, copper material, flux obtain containing gold and silver matte, flue dust and Water Quenching Slag after copper blast-furnace melting; Reclaim containing after valuable element gold and silver and copper in gold and silver matte, containing the directly raw material of conduct blowing copper of gold and silver matte; Reclaim after the valuable element lead in flue dust, flue dust is directly as the plumbous raw material of refining; The Water Quenching Slag other industry that is applied to for sale.
Further, in step 1), when the granularity of described kiln slag is greater than 100mm, for subsequent use after Mechanical Crushing.
Further, step 2) in, it is described that enter melting in copper blast-furnace taking charge as unit layering be to enter melting in copper blast-furnace taking charge as unit by the order layering of coke-kiln slag-copper material-flux.
Further, step 2) in, described flux is for being Wingdale.
Further, in step 4), adopt copper metallurgy principle process to reclaim gold and silver and copper containing gold and silver matte; The mode of bag collection that adopts flue dust reclaims the valuable elements such as the lead in flue dust; Water Quenching Slag contains iron, silicon and calcium constituent, directly as the other industry raw material of (as produced cement).
The beneficial effect that the present invention compared with prior art has:
(1) technique is simple, easy handling.Only just can obtain head product matte, Water Quenching Slag and flue dust by batching and melting operation simultaneously, reduce melting cost, realize high efficiency separation and the zero release of valuable metal;
(2) to kiln slag strong adaptability.Due to low to kiln slag granularity, moisture requirement, can process powder, also can treating piece material, and allow kiln slag composition to have certain fluctuation;
(3) Water Quenching Slag copper content is low.Because melt overheat degree is high, copper matte regulus can effectively separate with Water Quenching Slag;
(4) the fixed carbon utilization ratio of kiln slag is high.The utilization ratio of fixed carbon is up to more than 98%.
(5) recovery rate of valuable metals in kiln slag is high.The Cu rate of recovery is more than 65%, and the Ag rate of recovery is more than 90%, and the Au rate of recovery is more than 96%.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but technical scheme of the present invention is not limited to described scope.
Embodiment 1
The method with copper blast-furnace collocation processing kiln slag that the present embodiment provides, comprises the steps:
1) (main ingredient and mass percent are Cu 1.20%, Au 1.80 g/t, Ag 260 g/t, Pb 0.38%, Zn 1.93%, Fe 19.10%, SiO to get kiln slag
225.00%, CaO 8.00%, C 12.00%, MgO 1.30%, Al
2o
33.60%, other is 27.46% years old) 280kg/ criticizes to do for subsequent use, and moisture is less than 8%, is mass percent; The granularity that is crushed to that granularity in kiln slag is greater than to 100mm is 80mm ~ 100mm, then enters burden process section;
2) get copper material 84.0%, kiln slag 9.2%, 6.8% 3 kind of material of Wingdale are a collection of, get coke 9.0%, taking every batch of material as unit, are mass percent, enter melting in copper blast-furnace by the order layering of coke-kiln slag-copper material-Wingdale;
3) airtight copper blast-furnace melting, the processing condition of copper blast-furnace melting are: focal area temperature is 1250 DEG C, blast volume is 11000m
3/ h, stock column height is 2.7m, melting cycle is 150min;
4) kiln slag, copper material, flux obtain containing gold and silver matte, flue dust and Water Quenching Slag after copper blast-furnace melting; Adopt conventional copper metallurgy principle process to reclaim containing after valuable element gold and silver and copper in gold and silver matte, containing the directly raw material of conduct blowing copper of gold and silver matte; Adopt the mode of bag collection to reclaim after the valuable element lead in flue dust, flue dust is directly as the plumbous raw material of refining; Water Quenching Slag contains iron, silicon and calcium constituent, the other industry that is applied to for sale.
Wherein, containing chemical composition and the mass percent of gold and silver matte be: Cu 31.31%, Fe 25.79%, S 20.43%, Au 4.2g/t, Ag 992.0g/t, Pb 7.62%, Zn 2.12%; The chemical composition of flue dust and mass percent are: Cu 0.30%, S 5.14%, Ag 80g/t, Pb 35.16%, Zn 2.04%, SiO
21.36%, CaO 0.30%; The chemical composition of Water Quenching Slag and mass percent are Cu 0.31%, Fe 27.50%, Ag 22g/t, Pb 0.68%, Zn 2.15%, SiO
233.21%, CaO 11.80%.
In the present embodiment, the rate of recovery that the rate of recovery that the rate of recovery of Cu is 74.17%, Ag is 91.53%, Au is 98%, and the utilization ratio of fixed carbon is 98.54%.
Embodiment 2
The method with copper blast-furnace collocation processing kiln slag that the present embodiment provides, comprises the steps:
1) (main ingredient and mass percent are Cu 1.20%, Au 1.80 g/t, Ag 260 g/t, Pb 0.38%, Zn 1.93%, Fe 19.10%, SiO to get kiln slag
225.00%, CaO 8.00%, C 12.00%, MgO 1.30%, Al
2o
33.60%, other is 27.46% years old) 300kg/ criticizes to do for subsequent use, and moisture is less than 8%, is mass percent; The granularity that is crushed to that granularity in kiln slag is greater than to 80mm is 50mm ~ 80mm, then enters burden process section;
2) get copper material 86.0%, kiln slag 7.8%, 6.2% 3 kind of material of Wingdale are a collection of, get coke 8.9%, taking every batch of material as unit, are mass percent, enter melting in copper blast-furnace by the order layering of coke-kiln slag-copper material-Wingdale;
3) airtight copper blast-furnace melting, the processing condition of copper blast-furnace melting are: focal area temperature is 1300 DEG C, blast volume is 13000m
3/ h, stock column height is 2.5m, melting cycle is 100min;
4) kiln slag, copper material, flux obtain containing gold and silver matte, flue dust and Water Quenching Slag after copper blast-furnace melting; Adopt conventional copper metallurgy principle process to reclaim containing after valuable element gold and silver and copper in gold and silver matte, containing the directly raw material of conduct blowing copper of gold and silver matte; Adopt the mode of bag collection to reclaim after the valuable element lead in flue dust, flue dust is directly as the plumbous raw material of refining; Water Quenching Slag contains iron, silicon and calcium constituent, the other industry that is applied to for sale.
Wherein, containing chemical composition and the mass percent of gold and silver matte be: Cu 30.24%, Fe 27.52%, S 19.43%, Au 4.1g/t, Ag 982.0g/t, Pb 6.62%, Zn 1.82%; The chemical composition of flue dust and mass percent are: Cu 0.33%, S 5.34%, Ag 84g/t, Pb 36.78%, Zn 2.14%, SiO
21.26%, CaO 0.31%; The chemical composition of Water Quenching Slag and mass percent are Cu 0.29%, Fe 26.80%, Ag 25g/t, Pb 0.72%, Zn 2.05%, SiO
234.56%, CaO 10.58%.
In the present embodiment, the rate of recovery that the rate of recovery that the rate of recovery of Cu is 75.83%, Ag is 90.38%, Au is 96%, and the utilization ratio of fixed carbon is 98.43%.
Embodiment 3
The method with copper blast-furnace collocation processing kiln slag that the present embodiment provides, comprises the steps:
1) (main ingredient and mass percent are Cu 1.20%, Au 1.80 g/t, Ag 260 g/t, Pb 0.38%, Zn 1.93%, Fe 19.10%, SiO to get kiln slag
225.00%, CaO 8.00%, C 12.00%, MgO 1.30%, Al
2o
33.60%, other is 27.46% years old) 200kg/ criticizes to do for subsequent use, and moisture is less than 8%, is mass percent; The granularity that is crushed to that granularity in kiln slag is greater than to 50mm is 20mm ~ 50mm, then enters burden process section;
2) get copper material 80.0%, kiln slag 12.0%, 6.9% 3 kind of material of Wingdale are a collection of, get coke 9.3%, taking every batch of material as unit, are mass percent, enter melting in copper blast-furnace by the order layering of coke-kiln slag-copper material-Wingdale;
3) airtight copper blast-furnace melting, the processing condition of copper blast-furnace melting are: focal area temperature is 1200 DEG C, blast volume is 12000m
3/ h, stock column height is 2.6m, melting cycle is 140min;
4) kiln slag, copper material, flux obtain containing gold and silver matte, flue dust and Water Quenching Slag after copper blast-furnace melting; Adopt conventional copper metallurgy principle process to reclaim containing after valuable element gold and silver and copper in gold and silver matte, containing the directly raw material of conduct blowing copper of gold and silver matte; Adopt the mode of bag collection to reclaim after the valuable element lead in flue dust, flue dust is directly as the plumbous raw material of refining; Water Quenching Slag contains iron, silicon and calcium constituent, the other industry that is applied to for sale.
Wherein, containing chemical composition and the mass percent of gold and silver matte be: Cu 31.02%, Fe 25.56%, S 20.14%, Au 4.0g/t, Ag 988.0g/t, Pb 6.62%, Zn 1.56%; The chemical composition of flue dust and mass percent are: Cu 0.30%, S 5.02%, Ag 78g/t, Pb 34.22%, Zn 1.46%, SiO
21.14%, CaO 0.26%; The chemical composition of Water Quenching Slag and mass percent are Cu 0.33%, Fe 27.50%, Ag 26g/t, Pb 0.70%, Zn 2.18%, SiO
233.64%, CaO 11.40%.
In the present embodiment, the rate of recovery that the rate of recovery that the rate of recovery of Cu is 72.5%, Ag is 90.00%, Au is 97%, and the utilization ratio of fixed carbon is 98.84%.
Claims (8)
1. a method of processing kiln slag with copper blast-furnace collocation, is characterized in that, comprises the steps:
1) get kiln slag appropriate, moisture requirement is less than 8%, is mass percent, and granularity requirements is at 4mm～100mm;
2) get copper material 76.8～86.5%, kiln slag 4.7～12.0%, flux 6.2～6.9%, coke 8.7～9.3% 4 kind of material, be mass percent, enters melting in copper blast-furnace taking charge as unit layering;
3) airtight copper blast-furnace melting, the processing condition of copper blast-furnace melting are: focal area temperature is 1200～1300 DEG C, blast volume is 10000～13000m
3/ h, stock column is high is 2.5～2.7m, melting cycle is 100～150min;
4) kiln slag, copper material, flux obtain containing gold and silver matte, flue dust and Water Quenching Slag after copper blast-furnace melting; Reclaim containing after valuable element gold and silver and copper in gold and silver matte, containing the directly raw material of conduct blowing copper of gold and silver matte; Reclaim after the valuable element lead in flue dust, flue dust is directly as the plumbous raw material of refining; The Water Quenching Slag other industry that is applied to for sale.
2. the method for processing as claimed in claim 1 kiln slag with copper blast-furnace collocation, is characterized in that, in step 1), when the granularity of described kiln slag is greater than 100mm, for subsequent use after Mechanical Crushing.
3. process as claimed in claim 1 or 2 the method for kiln slag with copper blast-furnace collocation, it is characterized in that, step 2) in, it is described that enter melting in copper blast-furnace taking charge as unit layering be to enter melting in copper blast-furnace taking charge as unit by the order layering of coke-kiln slag-copper material-flux.
4. the method for processing as claimed in claim 1 or 2 kiln slag with copper blast-furnace collocation, is characterized in that step 2) in, described flux is Wingdale.
5. the method for processing as claimed in claim 3 kiln slag with copper blast-furnace collocation, is characterized in that step 2) in, described flux is Wingdale.
6. the method for processing as claimed in claim 1 or 2 kiln slag with copper blast-furnace collocation, is characterized in that, in step 3), the focal area temperature of described copper blast-furnace melting is 1220～1280 DEG C.
7. the method for processing as claimed in claim 5 kiln slag with copper blast-furnace collocation, is characterized in that, in step 3), the focal area temperature of described copper blast-furnace melting is 1220～1280 DEG C.
8. the method for processing as claimed in claim 1 or 2 kiln slag with copper blast-furnace collocation, is characterized in that, in step 4), the plumbous mode that adopts bag collection of valuable element in described flue dust reclaims.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10337083B2 (en) | 2015-08-24 | 2019-07-02 | 5N Plus Inc. | Processes for preparing various metals and derivatives thereof from copper- and sulfur-containing material |
| US10661346B2 (en) | 2016-08-24 | 2020-05-26 | 5N Plus Inc. | Low melting point metal or alloy powders atomization manufacturing processes |
| US11607732B2 (en) | 2018-02-15 | 2023-03-21 | 5N Plus Inc. | High melting point metal or alloy powders atomization manufacturing processes |
Citations (1)
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| CN103468954A (en) * | 2013-08-16 | 2013-12-25 | 云南云铜锌业股份有限公司 | Method for recycling valuable metals by smelting zinc kiln slag, leaching slag and lead slag |
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2014
- 2014-05-04 CN CN201410183261.1A patent/CN104004918B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103468954A (en) * | 2013-08-16 | 2013-12-25 | 云南云铜锌业股份有限公司 | Method for recycling valuable metals by smelting zinc kiln slag, leaching slag and lead slag |
Non-Patent Citations (1)
| Title |
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| 李永祥等: "锌窑渣产业化中铜的回收和走向的分析", 《全国"十二五铅锌冶金技术发展论坛暨驰宏公司六十周年大庆学术交流会论文集"》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10337083B2 (en) | 2015-08-24 | 2019-07-02 | 5N Plus Inc. | Processes for preparing various metals and derivatives thereof from copper- and sulfur-containing material |
| US10661346B2 (en) | 2016-08-24 | 2020-05-26 | 5N Plus Inc. | Low melting point metal or alloy powders atomization manufacturing processes |
| US11453056B2 (en) | 2016-08-24 | 2022-09-27 | 5N Plus Inc. | Low melting point metal or alloy powders atomization manufacturing processes |
| US11607732B2 (en) | 2018-02-15 | 2023-03-21 | 5N Plus Inc. | High melting point metal or alloy powders atomization manufacturing processes |
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| CN104004918B (en) | 2016-08-17 |
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