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Combined technology for treating copper sulfide ore

A combined process and technology of copper sulfide ore, applied in the field of metallurgy, can solve the problems of comprehensive recovery of difficult resources, environmental pollution, high metallurgical costs, etc., and achieve significant economic benefits, high comprehensive recovery rate, and reduce waste.

Active Publication Date: 2018-03-09
ZIJIN MINING GROUP +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because mines are generally located in remote mountainous areas with rough roads, if the sulfur dioxide produced by pyromelting and the sulfuric acid produced are not sold or the price is lower than the freight, they will either be discharged or stop production. The discharge will inevitably pollute the environment. Stopping production will directly affect the enterprise. With the development of the country and the taxation of the country, the sulfuric acid required for wet leaching often needs to be purchased, resulting in high metallurgical costs. Therefore, it is difficult to effectively realize the comprehensive recovery of resources by any of the above independent processes

Method used

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  • Combined technology for treating copper sulfide ore
  • Combined technology for treating copper sulfide ore
  • Combined technology for treating copper sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A copper mine in the Congo, the ore body from top to bottom are extrasurface ore (containing Cu 0.65%, S 1.05%, MgO4.71%, CaO 2.19%), secondary copper sulfide ore (containing Cu2.62%, S 2.13%, MgO 4.28%, CaO 2.53%), primary copper sulfide ore (containing Cu4.08%, S 2.51%).

[0035] (1) Theoretical calculation

[0036] by chemical reaction equation

[0037] MgO+H 2 SO 4 =MgSO 4 +H 2 o

[0038] CaO+H 2 SO 4 =CaSO 4 +H 2 o

[0039] 2S+3O 2 +2H 2 O=2H 2 SO 4

[0040] can be calculated

[0041] Theoretical acid consumption of off-surface ore per ton is 115.40+38.33=153.73kg, and acid production is 32.16kg;

[0042] The theoretical acid consumption per ton of secondary sulfide copper ore is 104.86+44.28=149.14kg, and the acid production is 65.23kg;

[0043] Based on the flotation sulfur recovery rate of 84.96%, the pyro-smelting desulfurization rate of copper concentrate is 99%, the conversion rate of sulfuric acid is 99%, the total utilization rate of sulfu...

Embodiment 2

[0058] In a copper mine in Inner Mongolia, the ore bodies from top to bottom are extrasurface ore (containing Cu 0.31%, S 0.95%, MgO5.69%, CaO 1.87%), secondary copper sulfide ore (containing Cu1.59%, S 2.55%, MgO 4.66%, CaO 3.26%), primary copper sulfide ore (containing Cu3.58%, S 2.87%).

[0059] (1) Theoretical calculation is the same as that of Example 1, and can be calculated

[0060] The theoretical acid consumption per ton of waste ore is 138.37+32.73=171.10kg, and the acid production is 29.09kg;

[0061] The theoretical acid consumption per ton of secondary sulfide copper ore is 113.32+57.05=170.37kg, and the acid production is 78.09kg;

[0062] Based on the flotation sulfur recovery rate of 82.31%, the copper concentrate pyromelting desulfurization rate of 99%, and the sulfuric acid conversion rate of 99%, the total utilization rate of sulfur in the primary ore is 80.67%, and the theoretical acid production per ton of raw ore copper sulfide ore is 70.90kg;

[0063] ...

Embodiment 3

[0077] In a copper mine in Heilongjiang, the orebodies from top to bottom are extrasurface ore (containing Cu0.42%, S 2.56%, MgO4.66%, CaO 1.86%), secondary copper sulfide ore (containing Cu1.63%, S 2.55%, MgO3.56%, CaO 3.42%), primary copper sulfide ore (containing Cu2.46%, S 3.55%).

[0078] (1) Theoretical calculation is the same as that of Example 1, and can be calculated

[0079] The theoretical acid consumption of ton of off-surface ore is 113.33+32.55=145.85kg, and the acid production is 78.4kg;

[0080] The theoretical acid consumption per ton of secondary sulfide copper ore is 86.57+59.85=146.42kg, and the acid production is 78.09kg;

[0081] Based on the flotation sulfur recovery rate of 89.56%, the copper concentrate pyromelting desulfurization rate of 99%, and the sulfuric acid conversion rate of 99%, the total utilization rate of sulfur in the primary ore is 87.78%, and the theoretical acid production per ton of raw ore copper sulfide ore is 95.43kg;

[0082] Th...

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Abstract

The invention relates to a combined technology for treating copper sulfide ore. The combined technology comprises a biological heap leaching technology, a stirring and leaching technology, and a flotation and fire-process technology; an ore body is divided into three types according to the following technology: firstly, carrying out crushing, ore grinding and flotation on deep-layer ore to obtaincopper concentrate and floated tailings; carrying out fire-process smelting on the copper concentrate to obtain crude copper and sulfuric acid; carrying out electrolytic refining on the crude copper to obtain cathode copper, copper sulfate and anode mud; recycling rare bulk noble metal from the anode mud; then stirring and leaching by utilizing sulfuric acid generated by a fire process, and carrying out crushing, ore grinding, acid leaching, biological stirring and leaching, extraction and electrodeposition on shallow-layer ore to obtain the cathode copper; carrying out the biological stirringand leaching to obtain a copper leaching solution and carrying out biological heap leaching; carrying out crushing, acid leaching, biological heap leaching, extraction and electrodeposition on surface ore to obtain the cathode copper; carrying out biological heap leaching to obtain a copper leaching solution; then commonly extracting the copper leaching solution of the two steps to obtain an electric pregnant solution and raffinate; and carrying out electrodeposition on the pregnant solution to obtain the cathode copper. The combined technology provided by the invention has the advantages ofcomplementary technology advantages, acid balance in a production process, environment friendliness, high comprehensive recycling rate, remarkable economic benefits, no resource waste and the like andis suitable for application of extracting the copper from various copper sulfide ores.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a combined process for treating copper sulfide ore, which is suitable for copper extraction from various types of copper sulfide ore. Background technique [0002] There are about 160 kinds of copper minerals that have been discovered in the world, among which primary copper sulfide ore or deep deposits mainly include chalcopyrite and bornite; secondary copper sulfide ore or shallow deposits mainly include chalcocite and copper blue; Copper ores mainly include malachite, azurite, chrysocolla and copper blue. An ore body often has copper oxide ore, secondary sulfide copper ore, and primary copper sulfide ore from the surface down, and is generally divided into deep ore, shallow ore and extrasurface ore, copper oxide ore, and secondary sulfide ore in industry. The copper ore is in the shallow layer, the primary copper sulfide ore is in the deep layer, and the exfoliated mineral...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B3/18C22B15/00C25C1/12
CPCC22B3/08C22B3/18C22B15/0026C22B15/0071C22B15/0084C25C1/12Y02P10/20
Inventor 谢洪珍王梅君范道焱陈庆根王春周有勤方启学
Owner ZIJIN MINING GROUP
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