Beneficiation process of skarn type magnetite containing copper and gold

A technology of skarn and magnetite, which is applied in the field of skarn-type copper-bearing gold-magnetite mineral processing technology, can solve the problems affecting the efficiency of ore unloading, the force of unloading plates is different, and the efficiency of ore unloading is low. Achieve the effects of improving efficiency, improving monomer dissociation degree, and ensuring the quality of concentrate

Active Publication Date: 2021-04-02
安徽太平矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When going through the first coarse, second fine, and first sweep magnetic separation process, the rougher concentrate is unloaded with a scraper without water, although it can ensure that the subsequent grinding concentration reaches more than 50%, but when the scraper is used for a long time, It may cause long-term friction between the ore scraping plate and the roughing concentrate, resulting in low ore unloading efficiency. At the same time, when unloading, the surface of the ore laying is not smooth, which will also cause different forces on each part of the unloading plate, affecting unloading efficiency

Method used

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  • Beneficiation process of skarn type magnetite containing copper and gold
  • Beneficiation process of skarn type magnetite containing copper and gold
  • Beneficiation process of skarn type magnetite containing copper and gold

Examples

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Effect test

Embodiment 1

[0040] like Figure 1-10 Shown, a kind of skarn type copper-bearing gold magnetite ore dressing process comprises the following process steps:

[0041] Step 1: The ore is crushed to less than 12mm by three-stage closed circuit, and then separated by permanent magnet wet magnetic separator. The product is used as a building material. The under-screen product is classified by the cyclone behind the ball mill. The copper grade in the over-screen material is lower than the mixed flotation tailings grade, and the iron grade is lower than the iron grade in the magnetic separation tailings. The copper content in the magnetic material is high and must be recycled, and this part will not enter the ball mill to reduce the secondary mud caused by over-grinding;

[0042] Step 2: After grinding, enter mixed flotation to obtain copper-sulfur mixed concentrate, copper-sulfur mixed concentrate is separated from copper and sulfur to obtain qualified copper concentrate and sulfur concentrate, ...

Embodiment 2

[0059] like Figure 1-10 Shown, a kind of skarn type copper-bearing gold magnetite ore dressing process comprises the following process steps:

[0060] Step 1: The ore is crushed to less than 12mm by three-stage closed circuit, and then separated by permanent magnet wet magnetic separator. The product is used as a building material. The under-screen product is classified by the cyclone behind the ball mill. The copper grade in the over-screen material is lower than the mixed flotation tailings grade, and the iron grade is lower than the iron grade in the magnetic separation tailings. The copper content in the magnetic material is high and must be recycled, and this part will not enter the ball mill to reduce the secondary mud caused by over-grinding;

[0061] Step 2: After grinding, enter mixed flotation to obtain copper-sulfur mixed concentrate, copper-sulfur mixed concentrate is separated from copper and sulfur to obtain qualified copper concentrate and sulfur concentrate, ...

Embodiment 3

[0072] like Figure 1-10 Shown, a kind of skarn type copper-bearing gold magnetite ore dressing process comprises the following process steps:

[0073] Step 1: The ore is crushed to less than 12mm by three-stage closed circuit, and then separated by permanent magnet wet magnetic separator. The product is used as a building material. The under-screen product is classified by the cyclone behind the ball mill. The copper grade in the over-screen material is lower than the mixed flotation tailings grade, and the iron grade is lower than the iron grade in the magnetic separation tailings. The copper content in the magnetic material is high and must be recycled, and this part will not enter the ball mill to reduce the secondary mud caused by over-grinding;

[0074] Step 2: After grinding, enter mixed flotation to obtain copper-sulfur mixed concentrate, copper-sulfur mixed concentrate is separated from copper and sulfur to obtain qualified copper concentrate and sulfur concentrate, ...

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Abstract

The invention discloses a beneficiation process of skarn type magnetite containing copper and gold. The beneficiation process of the skarn type magnetite containing copper and gold comprises the following steps that firstly, the dimension of ores is made to reach less than 12mm through three-stage closed-circuit crushing, sorting is conducted through a permanent magnet wet magnetic separator, magnetic separation concentrates directly enter a ball mill, and magnetic separation tailings enter a linear vibrating screen to be screened; secondly, bulk flotation is performed after ore grinding to obtain copper-sulfur bulk concentrates, and the copper-sulfur bulk concentrates are subjected to copper-sulfur separation to obtain qualified copper concentrates and sulfur concentrates; and thirdly, the bulk flotation tailings enter a one-roughing two-concentration one-scavenging magnetic separation process to obtain qualified iron ore concentrate products. According to the beneficiation process ofthe skarn type magnetite containing copper and gold, after the ores are crushed, special metal distribution with a low copper grade in non-magnetic ores in coarse fraction is fully utilized, a pre-selection process before grinding is added, discarded waste coarse particles can be sold as building materials to generate economic benefits, and meanwhile, the grinding and separation cost and the tailing treatment cost of the discarded waste coarse particles are reduced; and fine-fraction materials in the non-magnetic materials do not enter the ball mill any more.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a skarn type copper-bearing gold magnetite ore dressing process. Background technique [0002] Iron ore is an important raw material for iron and steel production enterprises. Natural ore (iron ore) is gradually extracted from natural ore (iron ore) through procedures such as crushing, grinding, magnetic separation, flotation, and gravity separation. There are more than 300 kinds of known iron-containing minerals, but only 20 kinds can be used as raw materials for ironmaking under the current technological conditions and technical level. According to the main properties of iron-bearing minerals and their mineral composition, iron ore is usually divided into four types: magnetite, hematite, limonite, and siderite. The primary ore accounts for about 90% of the total ore, and there are more than 20 kinds of minerals that make up the ore. The metal minerals are mainly iro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00B02C17/10B07B1/28B03D1/00B03C1/02B03C1/10B08B1/02
CPCB03B9/00B02C17/10B07B1/28B03D1/00B03C1/02B03C1/10B08B1/02
Inventor 张川罗骁赖富来冯晟胡小锐
Owner 安徽太平矿业有限公司
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