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A kind of beneficiation process of extracting copper and reducing silicon

A silicon reduction and process technology, applied in the field of recycling of non-ferrous metal resources, can solve problems such as high silica content, increased energy consumption of smelting furnaces, and unfavorable economic benefits, so as to improve recovery rate, reduce tailings discharge, and improve economic efficiency. benefit effect

Active Publication Date: 2019-10-29
大冶有色金属集团控股有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the content of silicon dioxide in the sedimentary-reformed glutenite copper concentrate is relatively high, which brings about the impact of increased energy consumption of the smelting furnace and reduced furnace life for subsequent smelting, and at the same time is unfavorable for the improvement of economic benefits, etc., and provides A kind of beneficiation process of extracting copper and reducing silicon

Method used

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  • A kind of beneficiation process of extracting copper and reducing silicon

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Comparison scheme
Effect test

Embodiment 1

[0017] see figure 1 , a kind of beneficiation process of extracting copper and reducing silicon in this embodiment, raw ore enters semi-autogenous mill and ball mill after coarse crushing, and obtains qualified raw ore pulp, and raw ore pulp is rough-swept through flotation machine to obtain rough separation Concentrate and scavenging tailings, the scavenging tailings are sent to the tailings filling system, the rougher concentrate enters the ball mill for regrinding, and the qualified rougher concentrate slurry is obtained, and the rougher concentrate slurry is then selected through the flotation column. Obtain flotation copper concentrate;

[0018] Specific steps are as follows:

[0019] (1) Raw ore crushing and grinding operation: the raw ore with a particle size of ≤700mm is roughly crushed to below 250mm by a crusher, the copper content in the raw ore is 0.97%, and the silicon content is 37.23%; the raw ore after coarse crushing is sent to the semi-autogenous grinding T...

Embodiment 2

[0025] see figure 1, a kind of beneficiation process of extracting copper and reducing silicon in this embodiment, raw ore enters semi-autogenous mill and ball mill after coarse crushing, and obtains qualified raw ore pulp, and raw ore pulp is rough-swept through flotation machine to obtain rough separation Concentrate and scavenging tailings, the scavenging tailings are sent to the tailings filling system, the rougher concentrate enters the ball mill for regrinding, and the qualified rougher concentrate slurry is obtained, and the rougher concentrate slurry is then selected through the flotation column. Obtain flotation copper concentrate;

[0026] Specific steps are as follows:

[0027] (1) Raw ore crushing and grinding operation: the raw ore with a particle size of ≤700mm is roughly crushed to below 250mm by a crusher, the copper content in the raw ore is 0.91%, and the silicon content is 35.8%; the raw ore after coarse crushing is sent to the semi-autogenous grinding The...

Embodiment 3

[0032] see figure 1 , a kind of beneficiation process of extracting copper and reducing silicon in this embodiment, raw ore enters semi-autogenous mill and ball mill after coarse crushing, and obtains qualified raw ore pulp, and raw ore pulp is rough-swept through flotation machine to obtain rough separation Concentrate and scavenging tailings, the scavenging tailings are sent to the tailings filling system, the rougher concentrate enters the ball mill for regrinding, and the qualified rougher concentrate slurry is obtained, and the rougher concentrate slurry is then selected through the flotation column. Obtain flotation copper concentrate;

[0033] Specific steps are as follows:

[0034] (1) Raw ore crushing and grinding operation: the raw ore with a particle size of ≤700mm is roughly crushed to below 250mm by a crusher, the copper content in the raw ore is 0.99%, and the silicon content is 39.8%; the raw ore after coarse crushing is sent to the semi-autogenous mill Grindi...

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Abstract

The invention belongs to a nonferrous metal resource recycling technology, and discloses a beneficiation process for extracting copper and reducing silicon. Crude ores are roughly crushed to enter a semi-autogenous mill and a ball mill for grinding to obtain qualified crude ore pulp; the crude ore pulp is roughly scavenged by a flotation machine to obtain roughed concentrates and scavenged tailings; the scavenged tailings are fed in a tailing filling system; the roughed concentrates are fed in the ball mill for regrinding to obtain qualified roughened concentrate pulp; and the roughed concentrate pulp is selected by a flotation column to obtain flotation copper concentrates. A new technical process for extracting copper and reducing silicon is formed by adopting such technical measures asa semi-autogenous ore grinding process, a machine-column combined flotation process and a mixed medicine system; and the process achieves important significance on maintenance and improvement of the ecological environment, improvement of the mineral resource utilization rate and promotion of the mine sustainable development.

Description

technical field [0001] The invention belongs to the technical field of recycling and utilization of nonferrous metal resources, in particular to a beneficiation process for extracting copper and reducing silicon. Background technique [0002] At present, 80% of the world's primary copper production is produced by pyrometallurgy, and about 20% is produced by hydrometallurgy. Pyrochemical copper smelting is used to process various copper concentrates and waste miscellaneous copper in copper sulfide ores. Hydrometallurgy copper is usually It is used to treat copper oxide ore, low-grade waste ore, residual ore in the pit and refractory compound ore, etc. When the gangue in smelting copper concentrate is mainly silicon, the smelting generally adopts high-silicon slag type, and the slag is treated in a depleted electric furnace or a precipitation furnace to further reduce the copper content in the slag. SiO 2 It is the main component of fayalite slag, and its content in the slag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B02C21/00
CPCB02C21/00B03B7/00
Inventor 曾祥龙夏威韩伟胡正华龙银艳孙小俊
Owner 大冶有色金属集团控股有限公司
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