Method of extracting gold and silver from arsenic containing aurin ore

A gold concentrate, gold and silver technology, applied to the improvement of process efficiency, photography technology, instruments, etc., can solve the problems of not being able to achieve a large margin, improve the recovery rate of gold and silver, etc., achieve simple and easy process methods, reduce secondary The effect of wrapping and low impurity content

Inactive Publication Date: 2008-07-23
SHANDONG GUODA GOLD
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Problems solved by technology

[0004] The recovery rate of gold and silver can only reach 50-60% for the method of extracting gold and silver from low-sulfur and arsenic-containing gold concentrate by the above-mentioned two-stage boiling roasting process, which still cannot achieve the purpose of greatly improving the recovery rate of gold and silver.

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  • Method of extracting gold and silver from arsenic containing aurin ore

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Embodiment Construction

[0033] Specific embodiments of the present invention are given below to further illustrate the present invention.

[0034] The method for extracting gold and silver from arsenic-containing gold concentrate of the present invention, the specific implementation is as follows

[0035] 1. Activator activation

[0036] According to the characteristics of refractory arsenic-containing gold concentrate, copper-containing minerals or copper sulfate are added to the arsenic-containing gold concentrate as an activator, and an appropriate amount of sodium sulfate can also be added, and copper-containing minerals or copper sulfate can be added to make the The copper content in the gold concentrate reaches 0.5-2%, preferably 0.8-1.5%, then add water to adjust the pulp concentration to 60%-70% (calculated as a percentage of dry ore), and stir and activate at normal temperature and pressure for 4 Hours or more are preferred;

[0037] 2. Two-stage boiling roasting

[0038] Two-stage fluidi...

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Abstract

The present invention relates to a method for extracting gold and silver from arsenical gold headings. It is characterized by that said method includes the following steps: (1), using activating agent to make activation; (2), first-stage reduction and calcinations; (3), second-stage oxidation and calcinations; (4), acid-pickling, using acid-pickling liquor to make extraction and electrodepositing cathode copper; (5), cyaniding acid-pickling dregs and recovering gold and silver; and (6), calcining smoke gas, making trentment and recovering arsenic and recovering sulfur.

Description

1. Technical field [0001] The invention relates to a method for extracting gold and silver from arsenic-containing gold concentrate, and belongs to the technical field of gold and silver extraction methods for precious metal smelting. 2. Background technology [0002] Gold and silver are generally associated in minerals in the form of simple substances. The main metal minerals are pyrite, arsenite, etc., followed by galena, sphalerite, pyrrhotite, arsenopyrite, etc., and non-metallic minerals are quartz, feldspar and carbonate minerals. Gold and silver are closely related to pyrite and arsenopyrite, and generally form associated ores. For arsenopyrite the main component is AsFeS 2 , SiO 2 And other trace elements such as gold and silver associated with it. [0003] At present, in the field of gold smelting, three pretreatment methods are generally used for refractory gold concentrates containing arsenic. The first is the secondary boiling roasting technology; the second...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B11/00C22B11/08C22B1/16C22B3/06C22B3/26C25C1/20
CPCY02P10/20
Inventor 徐永祥吕寿明王立新高升吉刘占林韩玉石苑兆金王建政路玉国
Owner SHANDONG GUODA GOLD
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