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Comprehensive treatment method for gold concentrate and secondary copper resources

A technology for comprehensive treatment and gold concentrate, applied in the field of non-ferrous metal metallurgy, can solve the problems of high investment cost and difficulty in popularization of gold concentrate pyrometallurgy, and achieve the effect of low application threshold and cost, energy and cost saving.

Active Publication Date: 2021-12-03
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of this application is to provide a comprehensive treatment method for gold concentrate and secondary copper resources, so as to solve the high investment cost and difficulty in popularization of gold concentrate pyrometallurgy due to the addition of copper concentrate in the prior art The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Gold concentrate (main components: Cu 0.01-1%, Au 40-120g / t, Fe 30-35%, S 30-35%, SiO 2 12-18%, the addition rate is 26-30t / h) and the quartz stone (the addition rate is 4-5t / h). ~35t / h) added by feeding machine Bottom blowing melting furnace;

[0035] (2) Add massive secondary copper resources (containing 70-80% Cu, adding speed 4-5t / h) with a size of 50-100mm through a feeder Bottom blowing melting furnace;

[0036] (3) Add the PCB circuit board (adding speed 0.3~0.5t / h) through the feeder Bottom blowing melting furnace;

[0037] (4) to In the bottom blowing smelting furnace, the concentration of oxygen-containing gas is 70%, the air supply pressure is 0.8Mpa, and the air supply rate is 6000-8000Nm 3 / h; control the smelting temperature at 1180-1230°C to obtain smelting copper matte (Cu 40-45%, Fe18-20%, S 20-25%, Au 80-240g / t), smelting slag (main component Cu 2.0- 4.0%, Fe 40-45%, SiO 2 20~25%), smelting flue gas (containing SO 2 15-20%). The fl...

Embodiment 2

[0039] (1) Gold concentrate (main components: Cu 1-2%, Au 40-120g / t, Fe 30-36%, S 32-38%, SiO 2 12-18%, the addition rate is 26-30t / h), quartz stone (the addition rate is 4-5t / h), the massive secondary copper resources with a size of 40-60mm (containing Cu 70-80%, the addition rate is 3~4t / h), small particle size secondary copper resources (adding speed 1~2t / h, particle size is 2~10mm, containing Cu 95%~98%) and PCB circuit board (adding speed 0.3~0.5t / h) were added to 12m through feeder 2 Side blowing melting furnace;

[0040] (2) to 12m 2 In the side blowing smelting furnace, the concentration of 85% oxygen-containing gas is introduced, the air supply pressure is 0.2Mpa, and the air supply rate is 7000-9000Nm 3 / h; control the melting temperature at 1230-1250°C to obtain smelting copper matte (main components: Cu 42-50%, Fe 20%-25%, S 19-22%, Au70-200g / t), smelting slag (mainly Composition: Cu 1.0~1.2%, Fe40~45%, SiO 2 24~30%), smelting flue gas (containing SO 2 18...

Embodiment 3

[0042] (1) Gold concentrate (main components: Cu 1-2%, Au 40-120g / t, Fe 32-36%, S 32-38%, SiO 2 12-18%, the addition rate is 30-35t / h); mixed with quartz stone (addition rate is 5-7t / h), copper-containing sludge (addition rate is 0.5-0.8t / h), reduced coal (addition rate is 0.5-0.8t / h), reduced coal (addition rate 0.8~1.5t / h), after batching gold concentrate, quartz stone and sludge, they are granulated by a disc granulator to obtain a granular system to be smelted, and the particle size of the material is 10-25mm. (Adding speed is 36t / h~45t / h) Add 15m through the feeder 2 Side blowing melting furnace;

[0043] (2) Add massive secondary copper resources with a size of 70-110mm (containing 70-80% Cu, and the addition speed is 6-7t / h), and add 15m 2 Side blowing melting furnace;

[0044] (3) to 15m 2 In the side blowing smelting furnace, the concentration of 85% oxygen-containing gas is introduced, the air supply pressure is 0.2Mpa, and the air supply rate is 10000-12000Nm ...

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Abstract

The invention provides a comprehensive treatment method for gold concentrate and secondary copper resources. The comprehensive treatment method comprises the following steps: materials comprising the gold concentrate and the secondary copper resources are smelted in an oxygen-containing atmosphere to obtain smelted copper matte and smelted slag; and the grade of copper in the secondary copper resources is higher, the secondary copper resources and the gold concentrate are smelted together in the oxygen-containing atmosphere, S monomers released by decomposition of metal sulfides in the gold concentrate react with Cu elementary substances in the secondary copper resources to form copper matte, Au in the gold concentrate is captured, meanwhile, copper in the secondary copper resources is effectively recycled, oxidizing and slagging are carried out in the oxygen-containing atmosphere to form the smelted slag which is incompatible with and separated from the copper matte, part of required heat is provided for smelting, and energy and cost are effectively saved. Due to the characteristics of wide distribution of the secondary copper resources and higher copper content, the secondary copper resources consumed for collecting equivalent gold are greatly reduced compared with copper concentrate, so that the process has lower application threshold and cost.

Description

technical field [0001] The application relates to the technical field of nonferrous metal metallurgy, and relates to a comprehensive treatment method for secondary copper resources of gold concentrate. Background technique [0002] Traditional gold concentrate treatment adopts cyanide leaching process. For some refractory gold concentrates with high As, high carbon and high Cu, in recent years, roasting is also used for concentrate pretreatment, and cyanide leaching is still used after treatment. . But generally speaking, the recovery rate of Au, Ag, and Cu is not high, and the profit maximization cannot be realized. [0003] The matte-making gold trapping process is a gold extraction process that has developed rapidly in recent years. It usually needs to be mixed with a certain amount of copper concentrate to meet the purpose of "matte-making". The copper matte produced fully captures precious metals. Improved recovery of precious metals. Using the matte-making gold trap...

Claims

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Application Information

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IPC IPC(8): C22B11/02C22B15/00C22B7/00C22B1/24
CPCC22B11/02C22B15/0017C22B7/002C22B1/24Y02P10/20
Inventor 刘恺陆金忠李晓霞黎敏李锋李东波吴玲孙晓峰李海春
Owner CHINA ENFI ENGINEERING CORPORATION
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