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Mineral beneficiation method for separating bismuth and sulfide from bismuth-sulfide concentrate

A beneficiation method and technology of sulfur concentrate, which is applied in the field of separation of bismuth and sulfur in bismuth-sulfur concentrate, can solve the problems of difficulty in obtaining bismuth concentrate, large difference in floatability of pyrrhotite, difficulty in separation of bismuth-sulfur flotation, etc. problems, to achieve the effects of reducing impact, efficient recovery, and reducing the amount of ore

Active Publication Date: 2018-05-01
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to aim at the separation process of existing bismuth minerals and pyrite minerals, the difference in floatability of pyrrhotite is large, and some pyrrhotite with excellent floatability is very easy to enter the flotation concentrate, resulting in bismuth Sulfur flotation separation is difficult, and it is difficult to obtain higher-grade bismuth concentrates. Provide a beneficiation method for the separation of bismuth and sulfur in bismuth-sulfur concentrates

Method used

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  • Mineral beneficiation method for separating bismuth and sulfide from bismuth-sulfide concentrate
  • Mineral beneficiation method for separating bismuth and sulfide from bismuth-sulfide concentrate
  • Mineral beneficiation method for separating bismuth and sulfide from bismuth-sulfide concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 The ore in this example is bismuth-sulfur concentrate in a place in Yunnan, China.

[0046] S1. Bismuth sulfur concentrate is ground to -0.074mm, accounting for 80%;

[0047] S2. Carry out weak magnetic separation of the product after grinding in a weak magnetic separator, adjust the magnetic field strength to 0.3T, and obtain pyrrhotite concentrate and weak magnetic tailings with stronger magnetism;

[0048] S3. Feed the weak magnetic tailings into the strong magnetic separator for strong magnetic roughing, adjust the magnetic field strength to 0.6T, and obtain the weaker magnetic pyrrhotite coarse concentrate and strong magnetic tailings;

[0049] S4. Feed the pyrrhotite coarse concentrate into the strong magnetic separator for strong magnetic concentration, adjust the magnetic field strength to 0.5T, and obtain the weaker magnetic pyrrhotite concentrate and magnetic middle ore;

[0050] S5. Merging the pyrrhotite concentrate with stronger magnetism and the...

Embodiment 2

[0053] In Example 2, the ore is a bismuth-sulfur concentrate in a place in Jiangxi, China.

[0054] S1. Bismuth sulfur concentrate is ground to -0.074mm, accounting for 85%;

[0055] S2. Carry out weak magnetic separation to the product after grinding in a weak magnetic separator, and adjust the magnetic field strength to 0.15T to obtain pyrrhotite concentrate and weak magnetic tailings with stronger magnetism;

[0056] S3. Feed the weak magnetic tailings into the strong magnetic separator for strong magnetic roughing, adjust the magnetic field strength to 0.8T, and obtain the weaker magnetic pyrrhotite coarse concentrate and strong magnetic tailings;

[0057] S4. Feed the pyrrhotite coarse concentrate into the strong magnetic separator for strong magnetic concentration, adjust the magnetic field strength to 0.7T, and obtain the weaker magnetic pyrrhotite concentrate and magnetic middle ore;

[0058] S5. Merging the pyrrhotite concentrate with stronger magnetism and the pyrrh...

Embodiment 3

[0061] Example 3 The ore in this example is bismuth-sulfur concentrate in a certain place in Guangxi, China.

[0062] S1. Bismuth sulfur concentrate is ground to -0.074mm, accounting for 76%;

[0063] S2. Carry out weak magnetic separation of the product after grinding in a weak magnetic separator, adjust the magnetic field strength to 0.3T, and obtain pyrrhotite concentrate and weak magnetic tailings with stronger magnetism;

[0064] S3. Feed the weak magnetic tailings into the strong magnetic separator for strong magnetic roughing, adjust the magnetic field strength to 0.7T, and obtain the weaker magnetic pyrrhotite coarse concentrate and strong magnetic tailings;

[0065] S4. Put the pyrrhotite coarse concentrate into the strong magnetic separator for strong magnetic concentration, adjust the magnetic field strength to 0.6T, and obtain the weaker magnetic pyrrhotite concentrate and magnetic middle ore;

[0066] S5. Merging the pyrrhotite concentrate with stronger magnetism...

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Abstract

The invention discloses a mineral beneficiation method for separating bismuth and sulfide from bismuth-sulfide concentrate. The method comprises the steps of firstly, separating out pyrrhotite with strong magnetism from the bismuth-sulfide concentrate through weak magnetic separation in advance and then separating out pyrrhotite with weak magnetism from the bismuth-sulfide concentrate through strong magnetic separation; secondly, combining the pyrrhotite with the strong magnetism and the pyrrhotite with the weak magnetism into sulfur concrete 1 mainly comprising the pyrrhotite; adding a sulfurinhibitor, a bismuth activating agent, a bismuth collecting agent and a foaming agent to magnetic separation tailings to conduct flotation to obtain bismuth concrete and sulfur concrete 2 mainly comprising pyrite. The mineral beneficiation method has the advantages that the bismuth-sulfur separation effect is good; the grade of obtained bismuth concrete is high; the recovery rate is high, and isapplicable to separation of the bismuth-sulfur concrete and particularly suitable for separation of bismuth-sulfur concrete with the high pyrrhotite content.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a beneficiation method for separating bismuth and sulfur from bismuth-sulfur concentrate. Background technique [0002] Bismuth has unique properties. As an important metallurgical additive, a fusion alloy and a raw material for the production of drugs and chemicals, it is widely used in the industrial and medical fields. In nature, bismuth mostly exists in the form of compounds such as free metals, oxides, sulfides and sulfur-containing salt minerals. Bismuth is often associated with tungsten, molybdenum, copper, iron and other elements, and there are very few single bismuth deposits. Therefore, there are few researches on beneficiation of bismuth, and the separation of bismuth in production is usually subordinate to the recovery of main ore elements. [0003] Pyrite minerals such as pyrite and pyrrhotite are often associated with bismuth-containing polymetallic sulf...

Claims

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Application Information

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IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 冉金城邹坚坚叶小璐袁经中宋宝旭陈明波汪泰姚艳清王成行李沛伦陈洪兵邱显扬汤玉和胡真李汉文付华杨权志何凤文
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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