Method for treating cyanide tailings

A technology for cyanidation of tailings and slag, used in metallurgical technology and environmental protection fields

Inactive Publication Date: 2017-05-17
CHINA ENFI ENGINEERING CORPORATION
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  • Abstract
  • Description
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[0005] Therefore, the existing technology for treat

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  • Method for treating cyanide tailings

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Embodiment Construction

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise ...

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Abstract

The invention discloses a method for treating cyanide tailings. The method comprises the following steps that the cyanide tailings, copper-containing materials, a reducing agent and a slagging agent are mixed and then supplied to a molten pool smelting furnace for smelting treatment, and therefore smelting slag, smelting flue gas and precious metal alloys containing gold, silver and copper are obtained. According to the method, the cyanide tailings are treated through the molten pool smelting furnace, the cyanide tailings can be treated harmlessly, meanwhile the valuable metals such as gold and silver in the cyanide tailings can be recovered effectively, the gold content in the molten pool smelting furnace can be lowered to 0.3 g/t, and the silver content can be lowered to 3-5 g/t.

Description

technical field [0001] The invention belongs to the fields of metallurgical technology and environmental protection. Specifically, the invention relates to a method for treating cyanidation tailings. Background technique [0002] At present, most gold enterprises in my country mainly use the cyanidation method to recover the gold and silver in the flotation gold concentrate. Due to the influence of the nature and operating conditions of the gold concentrate, the gold, gold, and Silver cannot be completely recovered, and high-grade gold and silver remain in the tailings (the gold in the tailings is about 2-10g / t, and the silver is about 10-100g / t). In addition, the tailings also contain copper, lead, Zinc, sulfur, arsenic, iron, etc., if these valuable elements cannot be effectively recycled, it will inevitably lead to a waste of mineral resources. In addition, cyanide tailings contain a certain amount of CN - , The long-term storage yard will pollute the environment, which h...

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Application Information

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IPC IPC(8): C22B7/00C22B7/02C22B11/08C22B15/00
CPCC22B7/001C22B7/02C22B11/08C22B15/0028Y02P10/20
Inventor 李兵尉克俭李东波陆金忠曹珂菲赵永成冯双杰
Owner CHINA ENFI ENGINEERING CORPORATION
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