Method for treating complex gold concentrate cyanidation tailings through microwave chloridizing roasting and volatilization

A technology of cyanidation tailings and chlorination roasting, applied in the direction of improving process efficiency, etc., can solve the problems of increasing the risk of secondary pollution of cyanide slag, glass body ring formation, and high organic carbon content, so as to promote the dissociation of monomers and effective reaction area, improving reaction thermodynamics and kinetics conditions, reducing the effect of physical and chemical reaction activation energy
CN105969979AInactive Publication Date: 2016-09-28新疆星塔矿业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
新疆星塔矿业有限公司
Publication Date
2016-09-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for treating complex gold concentrate cyanidation tailings through microwave chloridizing roasting and volatilization. The method comprises the following steps: feeding a complex gold concentrate cyanide tailing mixture containing a chlorinating agent into a disk granulator, so as to obtain green pellets; sending the green pellets into an industrial microwave oven, setting certain temperature and time, and carrying out drying, preheating and roasting volatilization in sequence, so as to obtain volatilized flue gas and hot pellets, wherein the obtained flue gas contains valuable metals such as gold, silver and copper; leading the flue gas into a wet process recovery system via a draught fan for recovery; and sending the hot pellets into a pellet storage yard for sale after cooling. According to the method, the grade of gold in the tailings can be substantially lowered, the operation is easy and the technological process is short, the reaction temperature and time are reduced, and the subsequent treatment of the valuable metals such as gold in the discharged flue gas is relatively easy, and the production efficiency is improved.
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Description

technical field

[0001] The invention relates to a method for treating complex gold concentrate cyanidation tailings by microwave chlorination roasting volatilization. Background technique

[0002] With the large-scale mining of gold mines, the refractory gold ore resources in the world are decreasing day by day, and the refractory gold ore will become the main mineral resources of the gold industry in the future. The gold in refractory gold ores is mainly embedded in pyrite and arsenopyrite lattices, and some valuable metals still remain in the tailings after the cyanide gold extraction method is used. However, due to the low content of valuable metals in cyanide tailings and the difficulty in recycling, some companies directly sell cyanide tailings to downstream companies at low prices, which not only wastes resources, but also increases the risk of secondary pollution during storage and transportation of cyanide tailings .

[0003] CN104404261B discloses "a method for sy...

Claims

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