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
CN100404707CInactive Publication Date: 2008-07-23SHANDONG GUODA GOLD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG GUODA GOLD
Publication Date
2008-07-23
Estimated Expiration
Not applicable Β· inactive patent

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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.
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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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