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Method for smelting arsenic-containing gold concentrate

A smelting method and technology for gold concentrate, which are applied in the smelting field of arsenic-containing gold concentrate, can solve the problems of high cost, pollute the environment, and large investment in smelting and recovering arsenic, and achieve small investment, low operating cost, and improved gold recovery. rate effect

Inactive Publication Date: 2007-11-28
SHANDONG HUMON SMELTING
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for smelting arsenic-containing gold concentrate, which mainly solves the problem of large investment, high cost, and environmental pollution in the existing arsenic-containing gold concentrate smelting process. question

Method used

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Examples

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Embodiment 1

[0008] Example 1, the gold concentrate containing gold, silver, copper, sulfur and arsenic is blended and then added to the slurry tank to make a slurry with a concentration of 75%. Carry out roasting, control the temperature at 600-650°C, partially burn the sulfur, arsenic will form arsenic trioxide and exist in the gaseous state in the flue gas, and the roasted slag after roasting in the first-level fluidized furnace and the smoke separated from the first-level vortex will enter the second-level roaster. Under oxygen-rich conditions, the temperature is controlled at 600-650°C to fully roast the sulfur. The roasted slag roasted in the secondary fluidized furnace and the dust separated from the dust removal equipment enter the acid leaching tank together. The acidity is controlled at 5g / l and the ore concentration is 30%. leaching, the pulp is dehydrated by pressure filtration, and the filtrate is purified through copper liquid, extraction, electrowinning and other processes to...

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Abstract

A kind of smelting method of aurin mine containing arsenic, it contains the following technology steps: primary burning, second-class burning, The burning residue after burning will be added into the pickling ark with the soot separated to be pickled. The filtrate will be used to extract copper, the filter cake will be separated and cyanide residue and golden mud can be gained, and the golden mud will be smelted to extract gold bullion. The character of it is that the smoke gas, which has been catch dust by primary burning and second-class burning, will be drew arsenic in according to hop-pocket drying method. The process is as following, the smoke gas containing arsenic will enter the spray cooling tower and be quench by spraying water, the arsenic oxide will become solid and be separated out from gaseous crystal, the smoke gas will take arsenic oxide solid into bag arsenic catcher, and the arsenic oxide solid will be collected into ash bucket after being filtrated by hop-pocket, and then will be packed and finished product can be gained. The smoke gas after arsenic catching will enter the acid making system, and produce vitriol by cleanse workshop section, translation workshop section and dried absorbing workshop section, the finished vitriol product will be gained, and the off-gas will be exhaled into air. The technology of it is simple and feasible, and it is easy to operate, the coefficient of recovery and arsenic catching rate are both high, the investment of it is low, and the running cost of it is low.

Description

Technical field: [0001] The invention relates to the technical field of extracting gold and silver by precious metal smelting, in particular to a method for smelting arsenic-containing gold concentrate. Background technique: [0002] At present, for the smelting of arsenic-containing gold concentrates, secondary roasting is generally used to process arsenic-containing gold concentrates, which is matched with a wet arsenic removal process. Difficulty, pollute the environment after discharge. Invention content: [0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for smelting arsenic-containing gold concentrate, which mainly solves the problem of large investment, high cost, and environmental pollution in the existing arsenic-containing gold concentrate smelting process. question. [0004] In order to achieve the above object, the present invention is achieved in this way: a method for smelting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/00C22B1/02C22B3/06C22B15/00C22B30/04C22B5/16C01B17/74
CPCY02P10/20
Inventor 王信恩曲胜利曲华东董准勤林明军李旗孙波崔家友
Owner SHANDONG HUMON SMELTING
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