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Arsenic-reducing mineral processing process for high-arsenic sulfur concentrate rich in tin copper associated sulphide minerals

A technology for high arsenic sulfur concentrate and sulfide ore, applied in flotation, chemical instruments and methods, solid separation and other directions, can solve the problems of difficult and low treatment cost treatment effect, etc., achieve good economic and social benefits, good effect, Easy-to-use effects

Active Publication Date: 2016-04-20
YUNNAN TIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some recycling and processing methods of arsenic-containing minerals in the prior art, such as Chinese patent CN103212481A discloses a flotation process of arsenic-containing pyrite, and Chinese patent CN104549769A discloses a method for flotation separation of sulfur-arsenic minerals from tailings Chinese patent CN104313343A discloses a method of oxidative roasting-microwave-assisted leaching of high-arsenic gold-containing sulfur concentrates to extract gold. These methods have their own advantages, but none of them is suitable for the surface of arsenic and sulfur minerals in high-arsenic sulfur concentrates. The arsenic and sulfur full flotation for arsenic reduction activated by chemicals and with a large amount of residual chemicals is difficult to achieve ideal treatment effects at low treatment costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An arsenic-reducing beneficiation process for high-arsenic-rich sulfur concentrates in tin-copper symbiotic sulfide ores, the steps are as follows:

[0016] 1) Send the high-arsenic-rich sulfur concentrate slurry produced by the tin-copper symbiotic sulfide ore into the sedimentation tank, and then use the cyclone to concentrate and dehydrate until the mass concentration reaches 60%, and then use the overflow ball mill to grind and scrub the elution After 1-3 minutes, add the arsenic-reducing inhibitor to inhibit the arsenopyrite mineral again, mix and stir for 3-5 minutes, and then adjust the pulp according to the concentration of 25% of the pulp; the arsenic-reducing inhibitor and its addition to the pulp The quantity is lime 3000g / t, sodium humate 400g / t, ammonium chloride 400g / t, ammonium sulfate 500g / t;

[0017] 2) The ore pulp treated in step 1) is sent to the full flotation arsenic-reducing beneficiation process of primary roughing, secondary sweeping, and primar...

Embodiment 2

[0021] An arsenic-reducing beneficiation process for high-arsenic-rich sulfur concentrates in tin-copper symbiotic sulfide ores, the steps are as follows:

[0022] 1) Send the high-arsenic-rich sulfur concentrate slurry produced by the tin-copper symbiotic sulfide ore into the sedimentation tank, and then use the cyclone to concentrate and dehydrate until the mass concentration reaches 50%, and then use the overflow ball mill to grind and scrub the elution After 3-5 minutes, add the arsenic-reducing inhibitor to inhibit the arsenopyrite mineral again, mix and stir for 3-5 minutes, and then adjust the pulp according to the concentration of 20% of the pulp; the arsenic-reducing inhibitor and its addition to the pulp The amount is lime 1000g / t, sodium humate 200g / t, ammonium chloride 1000g / t;

[0023] 2) The ore pulp treated in step 1) is sent to the full flotation arsenic-reducing beneficiation process of primary roughing, secondary sweeping, and primary beneficiation. By adding...

Embodiment 3

[0027] An arsenic-reducing beneficiation process for high-arsenic-rich sulfur concentrates in tin-copper symbiotic sulfide ores, the steps are as follows:

[0028] 1) Send the high-arsenic-rich sulfur concentrate slurry produced by the tin-copper symbiotic sulfide ore into the sedimentation tank, then use the cyclone to concentrate and dehydrate until the mass concentration reaches 40%, and then use the overflow ball mill to grind and scrub the elution After 5-6 minutes, add the arsenic-reducing inhibitor to inhibit the arsenopyrite mineral again, mix and stir for 3-5 minutes, and then adjust the pulp according to the concentration of 30% of the pulp; the arsenic-reducing inhibitor and its addition to the pulp The amount is lime 4000g / t, sodium humate 100g / t, ammonium sulfate 400g / t;

[0029] 2) The ore pulp treated in step 1) is sent to the full flotation arsenic-reducing beneficiation process of primary roughing, secondary sweeping, and primary beneficiation. By adding a com...

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Abstract

The invention discloses an arsenic-reducing mineral processing process for high-arsenic sulfur concentrate rich in tin copper associated sulphide minerals. The arsenic-reducing mineral processing process comprises the following steps: grinding minerals and scrubbing to remove reagents after carrying out concentration dehydration on the high-arsenic sulfur concentrate rich in the tin copper associated sulphide minerals, adding an arsenic-reducing inhibitor to re-inhibit arsenopyrite minerals, feeding the high-arsenic sulfur concentrate to a full-floating arsenic-reducing mineral processing process of primary roughing, secondary scavenging and primary concentration after size mixing, wherein a low-arsenic high-sulfur sulfur concentrate product is produced by adding a combined arsenic-reducing inhibitor; carrying out gravity separation by a shaking table on tailings subjected to secondary scavenging, thereby obtaining arsenic and tin mixed minerals and total tailings; and separating the arsenic and tin mixed minerals, thereby obtaining an arsenic concentrate product and a tin rough concentrate product. The arsenic-reducing mineral processing process is good in separating effect of sulfur and arsenic in the tin copper associated sulphide minerals, and is high in sulphide mineral recovery rate, so that valuable minerals are comprehensively recycled and utilized, and the reagent cost is low; and the method is simple, and is easy to operate.

Description

technical field [0001] The invention belongs to the technical field of mineral processing technology, and in particular relates to a mineral processing technology for reducing arsenic in sulfur concentrate rich in high arsenic in tin-copper symbiotic sulfide ore. Background technique [0002] Arsenic exists widely in the world. As arsenic is a chalophile element, many sulfide ores are associated with arsenic minerals. There are about 150 kinds of arsenic minerals in nature, mainly arsenopyrite, mostly found in high-temperature and medium-temperature hydrothermal deposits, and often associated with chalcopyrite, pyrite, pyrrhotite, stibnite, galena, sphalerite Sulfide minerals such as ore and cassiterite are closely symbiotic with precious metals such as gold and silver. In addition, arsenite and orthorhombite are also common. According to statistics, the ratio of arsenic to copper in 15% of copper ore resources in the world is 1:5, and the ratio of arsenic to gold in 5% of...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/012
CPCB03B7/00B03D1/012
Inventor 袁经中姚建伟陈明生张汝红杨永林陈绍伟杨权志
Owner YUNNAN TIN
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