Method for extracting gold and silver from gold concentrate

A technology for gold concentrate and gold mud, applied in the field of gold extraction and smelting, can solve the problems of low recovery rate, etc., and achieve the effects of strong adaptability of raw materials, high recovery rate of gold and silver, and short process flow

Active Publication Date: 2014-01-22
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
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Problems solved by technology

[0002] At present, for the smelting process of gold concentrate, the boiling roasting-calcining cyanidation gold extraction process is usually used in the prior art, but the comprehensive recovery rate of gold and silver in this method is low, and the gold content in the tailings is still as high as 2-6g / t, for this purpose, it is necessary to provide a more efficient gold concentrate smelting process

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  • Method for extracting gold and silver from gold concentrate

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In the embodiment of the present invention, gold concentrate is used as raw material, and gold and silver are extracted by fluidized roasting, desulfurization and arsenic removal-calcined sand melting and chlorination volatilization. Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings, as figure 1 Shown is the schematic flow chart of the method for extracting gold and s...

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Abstract

The embodiment of the invention discloses a method for extracting gold and silver from a gold concentrate. The method includes: taking the gold concentrate as a raw material, subjecting the gold concentrate to roasting for sulfur and arsenic removal treatment by one or more sections of fluidized bed roasters so as to obtain calcine; mixing the calcine with a chlorinating agent and a slag former, heating the mixture to a molten state in a chlorination molten pool by electric heating or fuel burning, and letting the gold and silver in the melt volatilize into flue gas in the form of a chloride after chlorination reaction; and washing and filtering the flue gas to obtain high grade gold mud, and refining the gold mud to produce a gold ingot. The method has the advantages of higher gold and silver recovery rates, strong raw material adaptability, short technological process, low energy consumption, and friendlier operation environment.

Description

technical field [0001] The invention relates to the technical field of gold extraction and smelting, in particular to a method for extracting gold and silver from gold concentrate. Background technique [0002] At present, for the smelting process of gold concentrate, the boiling roasting-calcining cyanidation gold extraction process is usually used in the prior art, but the comprehensive recovery rate of gold and silver in this method is low, and the gold content in the tailings is still as high as 2-6g / t, so it is necessary to provide a more efficient gold concentrate smelting process. Contents of the invention [0003] The object of the present invention is to provide a method for extracting gold and silver from gold concentrate, the method has high recovery rate of gold and silver, strong raw material adaptability, short technological process, low energy consumption and friendly operation environment. [0004] A method for extracting gold and silver from gold concent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/06
Inventor 王云孙文忠常耀超王柏林刘大学孙留根施继刚王春华袁朝新韦其晋
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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