Low-grade oxidized ore in-situ leaching gold extraction process method

Abstract

The invention belongs to the technical field of gold metallurgy, in particular to a low-grade oxidized ore in-situ leaching gold extraction process method. The low-grade oxidized ore in-situ leachinggold extraction process method comprises the following specific steps that a tank is dug, specifically, the tank is dug in a criss-cross mesh mode in an ore body region according to the ore body area;facilities are built, specifically, penetrating fluid recovery wells with the proper number are dug at reasonable positions; the PH value is adjusted to be about 10.5; gold is leached, specifically,the liquid prepared in the S3 is continuously pumped into an ore body; carbon adsorption is carried out, specifically, granular activated carbon is added into the penetrating fluid recovery wells; separating is carried out, specifically, the activated carbon mixed liquid with gold absorbed is extracted to be placed into a pregnant liquid pool; and gold is smelted, specifically, the gold in the pregnant liquid pool is extracted by using a traditional process; According to the process method, vegetation on the ore region does not need to be damaged in a large area, so that ecological balance canbe effectively maintained; capital construction investment is low, the production cost is low, the processing capacity is high, and industrial production is easy to realize; and low-grade resources which cannot be utilized by other process methods can be utilized, and great economic benefits are created for investors.

Description

technical field [0001] The invention relates to the technical field of alchemy, in particular to a process method for leaching gold from low-grade oxidized ores. Background technique [0002] With the large-scale mining of ores, the development and utilization of low-grade oxide ore resources has become an important task. At present, many low-grade oxide ore resources are still processed by traditional heap leaching. The heap leaching method has a small amount of treatment. , low income, relatively large investment costs, and large-scale damage to the vegetation in the mining area, which is not easy to realize industrial production. Therefore, we proposed a process for leaching gold from low-grade oxidized ore. Contents of the invention [0003] The object of the present invention is to provide a kind of ground leaching gold process method of low-grade oxidized ore, to solve the problem that the heap leaching method proposed in the above-mentioned background technology has...

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of ground leaching gold process method of low-grade oxidized ore, to solve the problem that the heap leaching method proposed in the above-mentioned background technology has small processing capacity, relatively large investment cost, and will destroy the vegetation in the mining area in a large area, which is not easy The problem of realizing industrial production

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