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Method of classified leaching of oxidized ore with abundant mud

A technology for high-slime and oxidized copper ore, which is applied in the leaching of copper oxide ores and the field of solution leaching and mining of oxidized ores, can solve the problems of poor leaching effect of high-slime oxidized ores, reduce average acid consumption and achieve high leaching rate , the effect of comprehensive benefits

Inactive Publication Date: 2012-05-09
XIZHI ELECTRONICS MATERIALS BRANCH YUNNAN COPPER IND GRP +2
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Problems solved by technology

[0006] The present invention aims to provide a comprehensive recovery method for leaching oxidized copper ore with high mud content to solve the problem of poor leaching effect of oxidized ore with high mud content

Method used

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  • Method of classified leaching of oxidized ore with abundant mud
  • Method of classified leaching of oxidized ore with abundant mud

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Embodiment Construction

[0021] This process has been applied in a copper mine in Yunnan. The oxidized ore on the surface of the mine adopts the open-pit mining method, and the ore is severely weathered and very soft. The ore oxidation rate is about 65%, of which the binding rate is 10%, the primary copper sulfide reaches 22%, and the average grade is 1.18%. Due to the strong weathering of the ore, the -1mm ore accounts for about 35%, and the clay minerals such as sericite and kaolin in the ore account for 25%, and the ore contains a large amount of mud. Heap leaching was used for trial production. Due to poor permeability, the infiltration depth of the solution was only 20-30 cm. 100,000 tons of ore was backlogged in the stockyard, and only more than 10 tons of copper were produced.

[0022] (1) Ore crushing

[0023] The raw ore enters the jaw crusher for coarse crushing, and then goes through the cone crusher for fine crushing. The crushed material is -30mm, and then enters the washing and gradin...

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Abstract

The invention belongs to the technical field of special metal ore mining, and relates to a method of leaching of oxidized copper ore with abundant mud. In the technical scheme of the invention, based on the ore crushing and by means of ore washing as well as spiral classification, the ores are classified according to the particle size, and the different leaching processes are used for the ores with the different particle sizes; the ores can be classified into massive ore, powder ore and shale ore through crushing, water washing and classification, then the classified ores are respectively conveyed to the heap leaching section, the tank leaching section and the mix leaching section via a belt, a loader and a pipeline, and in the ore crushing system, the two-section open circuit or closed circuit way is adopted for rough crushing and fine crushing to crush the ore particles of -500mm raw ore to -30mm; and the massive ores of +5mm are leached by the heap leaching process, the powder oresof 1-5mm are leached by the tank leaching process, and the shale ores of -1mm are conveyed into the mix leaching system for processing. The invention solves the problem of stockyard hardening due to the high mud content of the ore, and the powder ores and the shale ores are fully used. Therefore, the invention has high rate of resource utilization. Moreover, the method solves the problem of difficult processing of the oxidized copper ore with abundant mud.

Description

technical field [0001] The invention belongs to the field of special mining of metal ores, and relates to a method for leaching copper oxide ores, which is suitable for leaching mining of oxide ores with high mud content. Background technique [0002] For copper oxide ore, using conventional dressing and smelting technology, the recovery rate cannot meet the requirements, and it is difficult to obtain better economic benefits. The solution mining method integrates mining, dressing, and smelting technologies. It has the advantages of short technological process, economy, and environmental protection, and its development momentum is rapid. [0003] The commonly used leaching methods are heap leaching, agitation leaching and tank leaching. Heap leaching is to pile the mined ore on the surface after proper crushing, spray the leaching solution from the top of the ore heap, and collect the leaching solution from the bottom. The heap leaching method has the advantages of simple ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B15/00
CPCY02P10/20
Inventor 顾晓春王洪江张仪吴爱祥周煜尹升华张新普王贻明邓蕊金正聪严佳龙
Owner XIZHI ELECTRONICS MATERIALS BRANCH YUNNAN COPPER IND GRP
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