Novel high-impurity copper anode mud treatment technology

A technology of copper anode slime and impurity copper, which is applied in the direction of photographic process, photographic auxiliary process, process efficiency improvement, etc., can solve the problems of increasing investment and operating cost, increasing smelting slag flotation facilities, and many impurities, so as to improve the comprehensive Economic benefits, shortened production cycle, and improved operating environment

Inactive Publication Date: 2016-09-28
TONGLING NONFERROUS METALS GRP TONGGUAN NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But first, the copper anode slime obtained by flotation has more impurities, which requires higher content of gold and silver obtained by reduction smelting, and the impurities obtained by reduction smelting are more, which is not conducive to the vacuum distillation in the later s

Method used

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  • Novel high-impurity copper anode mud treatment technology

Examples

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Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: (1), copper anode slime with Pb content of 20wt%, Bi content of 5wt%, Cu content of 11wt%, Au content of 0.09wt%, and Ag content of 3.8wt% was subjected to sulfate roasting to remove selenium and leaching to remove copper ; (2) Side-blown furnace reduction smelting: add slagging agent (soda and lime), reducing agent (coke powder and iron filings) to the copper anode slime after sulfate roasting, selenium and copper removal, and mix to obtain a mixture The dry weight of copper anode slime, slagging agent and reducing agent after sulfate roasting to remove selenium and decopper is 100:4:6, and the mixed material is added into the side-blowing furnace from the feeding port of the side-blowing furnace , and the oxygen-enriched gas and coke oven gas are sprayed into the furnace from the heating device at the side of the side-blown furnace to react with the mixed materials. The amount of oxygen-enriched gas added is 220Nm 3 / h, the amount of coke oven gas added is ...

Embodiment 2

[0016] Example 2: (1), copper anode slime with Pb content of 26wt%, Bi content of 8.8wt%, Cu content of 12.5wt%, Au content of 0.122wt%, and Ag content of 4.25wt% was subjected to sulfate roasting to remove selenium and leaching Copper removal; (2) Reduction smelting in side blowing furnace: add slagging agent (soda and lime) and reducing agent (coke powder and iron filings) to copper anode slime after sulfate roasting, selenium removal and copper removal, and mix well The mixed material is obtained, the dry weight of the copper anode slime after sulfate roasting, selenium and copper removal, the weight ratio of the slagging agent and the reducing agent is 100:5:7, and the mixed material is added from the feeding port of the side blowing furnace to the side blowing furnace. In the furnace, the oxygen-enriched gas and coke oven gas are sprayed into the furnace from the heating device at the side of the side-blown furnace to react with the mixed materials. The amount of oxygen-en...

Embodiment 3

[0017] Example 3: (1), copper anode slime with Pb content of 30wt%, Bi content of 10wt%, Cu content of 14wt%, Au content of 0.14wt%, and Ag content of 4.5wt% was subjected to sulfate roasting to remove selenium and leaching to remove copper ; (2) Side-blown furnace reduction smelting: add slagging agent (soda and lime), reducing agent (coke powder and iron filings) to the copper anode slime after sulfate roasting, selenium and copper removal, and mix to obtain a mixture The dry weight of copper anode slime, slagging agent and reducing agent after krafting and roasting to remove selenium and decopper is 100:6:9, and the mixed material is added into the side-blowing furnace from the feeding port of the side-blowing furnace , and spray oxygen-enriched gas and coke oven gas from the heating device at the side of the side-blown furnace into the furnace to react with the mixed materials. The amount of oxygen-enriched gas added is 240Nm 3 / h, the amount of coke oven gas added is 340N...

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Abstract

The invention discloses a novel high-impurity copper anode mud treatment technology. The novel high-impurity copper anode mud treatment technology includes the following steps that firstly, copper anode mud is subjected to sulphating roasting and selenium removing, and copper is leached and removed; secondly, a side-blown converter is used for reduction smelting, wherein a slagging agent and a reducing agent are added to the copper anode mud obtained after sulphating roasting and selenium removing and copper removing, even mixing is conducted, a mixed material is obtained and subjected to melting, slagging and a reduction reaction, and smoke, dross on the upper layer and melt-shaped noble lead on the lower layer are formed; thirdly, vacuum distillation is conducted; and fourthly, gold and silver electrolysis and lead and bismuth recovery are conducted, wherein a Dore alloy is put into an intermediate-frequency furnace to be cast into a silver anode plate for silver electrolysis, and lead electrolysis is conducted after a lead and bismuth alloy is cast into a lead plate. The novel high-impurity copper anode mud treatment technology has the beneficial effects that reaction smelting and vacuum distillation are conducted through the side-blown converter, precious metal and valuable metal are recovered to the maximum degree, and the amount of precious metal left in the technology is reduced to the minimum.

Description

technical field [0001] The invention relates to a process for treating copper anode slime. Background technique [0002] At present, the treatment of copper anode slime can be roughly divided into two modes: fire treatment and wet treatment. Larger scale mostly adopts pyrotechnics. Copper anode mud fire process generally includes: pretreatment → reduction smelting → silver separation treatment → gold and silver electrolysis. Among them: 1) Pretreatment: The main purpose of this process is to remove copper and other impurities for subsequent processing. 2) The gold and silver electrolysis industry is basically the same, but 3) Reduction smelting + silver separation treatment: there are different Therefore, it is also the main part of the copper anode slime smelting process, which has a key impact on the economic and technical indicators of the entire process. Jinguan Copper Branch, a subsidiary of Tongling Nonferrous Metals Co., Ltd., produces about 5,000 tons of copper an...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B1/06C22B3/04C22B5/02C22B9/02C22B11/00C22B15/00C22B13/02C22B30/06C01B19/00C25C1/20C22B9/04
CPCC01B19/004C22B1/06C22B3/04C22B5/02C22B7/001C22B9/02C22B9/04C22B11/00C22B13/025C22B15/0071C22B15/0082C22B30/06C25C1/20Y02P10/20
Inventor 高大银张昕红叶志中夏兆泉周文义汪和僧文燕刘尚义俞鹰许冬
Owner TONGLING NONFERROUS METALS GRP TONGGUAN NEW TECH
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