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Beneficiation method suitable for alterated rock type gold ores

A mineral processing method and gold ore technology, applied in the direction of solid separation, etc., can solve the problems of low recovery rate of gold-bearing minerals, heavy pollution, high energy consumption, etc., to solve the problem of material blocking and ore over-crushing, no dust pollution, reduce dust grinding cost effect

Active Publication Date: 2020-06-05
甘肃省天水李子金矿有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of beneficiation method suitable for altered rock type gold ore, to solve the problems of heavy pollution, high energy consumption and low recovery rate of gold-bearing minerals by adopting the traditional beneficiation method of altered rock gold ore

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  • Beneficiation method suitable for alterated rock type gold ores

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Effect test

Embodiment 1

[0047] A beneficiation method suitable for altered rock type gold ore, the method comprises the following steps:

[0048] Step 1. Grinding:

[0049] Altered rock type gold ore obtained by mining. This type of ore comes from 600 meters underground in the Lizi mining area. The gold content is 5g / t. The conveyor is fed into the semi-autogenous mill, and at the same time water is supplied to the semi-autogenous mill. The gold ore is crushed and coarsely ground in the semi-autogenous mill to form a slurry with a concentration of 77%.

[0050] Step 2. Centrifugal re-election:

[0051] (1), rough classification:

[0052] The ore pulp 1 in step 1 flows to the spiral classifier for coarse classification to realize the separation of coarse-grained ore and fine-grained ore, wherein the fine-grained ore is less than 0.074mm The content of the ore is 42%, and the remaining Both are defined as coarse-grained ore, and the coarse-grained ore is returned to the semi-autogenous mill for furt...

Embodiment 2

[0069] A beneficiation method suitable for altered rock type gold ore, the method comprises the following steps:

[0070] Step 1. Grinding:

[0071] Altered rock type gold ore obtained by mining, this type of ore comes from 350 meters underground in the Lizi mining area, and its gold content is 1.5g / t. In the raw ore, fine mud below 20 microns The content is 22%, and the maximum particle size is 550mm. It is fed into the semi-autogenous mill by the belt conveyor, and water is supplied to the semi-autogenous mill at the same time. The gold ore is crushed and coarsely ground in the semi-autogenous mill to form a slurry with a concentration of 85%. 1.

[0072] Step 2. Centrifugal re-election:

[0073] (1), rough classification:

[0074] The ore pulp 1 in step 1 flows to the spiral classifier for coarse classification, so as to realize the separation of coarse-grained ore and fine-grained ore. The fine-grained ore is 46% of the ore with a particle size of less than 0.074mm, and...

Embodiment 3

[0091] A beneficiation method suitable for altered rock type gold ore, the method comprises the following steps:

[0092] Step 1. Grinding:

[0093] Altered rock type gold ore obtained by mining, this type of ore comes from 500 meters underground in the Lizi mining area, and its gold content is 2g / t, silver content is 60g / t, and lead content is 1.2%. In the raw ore, the content of fine mud below 20 microns is 20%, and the maximum particle size is 600mm. It is fed into the semi-autogenous mill by a belt conveyor, and water is supplied to the semi-autogenous mill at the same time. The gold ore is crushed and crushed in the semi-autogenous mill. Coarse grinding to form a slurry with a concentration of 75%.

[0094] Step 2. Centrifugal re-election:

[0095] (1), rough classification:

[0096] The ore pulp 1 in step 1 flows to the spiral classifier for coarse classification to realize the separation of coarse-grained ore and fine-grained ore, wherein the fine-grained ore is 40% of...

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Abstract

The invention discloses a beneficiation method suitable for alterated rock type gold ores, and belongs to the technical field of gold ore beneficiation. The problems that a traditional beneficiation method for the alterated rock type gold ores is serious in pollution, high in energy consumption and low in gold-bearing ore recovery rate are solved. The method comprises the four steps of ore grinding, centrifugal reselection, flotation and tailing reselection. According to the beneficiation method, the reselection process of combining centrifugal reselection, a flotation process, a spiral chuteand a table concentrator, namely, the technological process of combining reselection, flotation and reselection is adopted, and after the gold-bearing ores with the grade of 1.5-5 g / t are subjected tobeneficiation process enrichment and separation, finally the gold-bearing grade in final gangue is about 0.10 g / t, and the recovery rate of the gold-bearing ores reaches 97%; and the method is extremely efficient, and the beneficiation process is environmentally friendly and free of pollution in the whole process.

Description

technical field [0001] The invention belongs to the technical field of gold ore beneficiation, and in particular relates to a beneficiation method suitable for altered rock type gold ore. Background technique [0002] Altered rock-type gold ores are mainly produced in the form of veinlet disseminated pyrite-sericite, massive pyrite-sericite, disseminated pyrite-bearing breccia and disseminated polymetallic sulfide-bearing breccia, and the structure is mainly compressed Fragmentary structure, residual structure and interstitial structure, the structure is mainly veinlet disseminated and network veins, mineralization is uneven, and gold is mostly enriched at the edge of metal veinlets. [0003] Altered rock-type gold ore is a weakly expansive rock with low water absorption. Its strength and deformation characteristics are respectively affected by the degree of alteration, weathering and rock properties. When the shear strength and modulus decrease, the peak strain and Poisson...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 刘志华李电辉高洪兴马权喜屈战邢林科邱建龙刘其怀张军骆珍珠郑裕
Owner 甘肃省天水李子金矿有限公司
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