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Separation method of copper-sulphur ore rich in pyrrhotite and pyrite

A technology of pyrrhotite and mineral processing method, applied in chemical instruments and methods, flotation, magnetic separation, etc., can solve problems such as unfavorable environmental protection, non-recycling of tailings water, etc., achieve low cost, improve mineral processing index, The effect of low dosage

Active Publication Date: 2016-01-06
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, at present, the tailings water of most copper-sulfur mine flotation is not recycled, and the tailings water of these copper-sulfur mines is discharged after simple treatment, which is not conducive to environmental protection

Method used

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  • Separation method of copper-sulphur ore rich in pyrrhotite and pyrite
  • Separation method of copper-sulphur ore rich in pyrrhotite and pyrite
  • Separation method of copper-sulphur ore rich in pyrrhotite and pyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Copper-sulfur ore with 0.60% Cu, 12.69% pyrrhotite and 28.24% pyrite.

[0021] 1) Raw ore is crushed and ground to a particle size of -0.074mm, accounting for 65%;

[0022] 2) Magnetic separation: the magnetic field strength is 0.15T to obtain pyrrhotite concentrate and pyrrhotite tailings;

[0023] 3) Gradient magnetic separation: Pyrrhotite tailings undergo gradient magnetic separation with a magnetic field strength of 0.9T to obtain copper magnetic separation concentrate and copper magnetic separation tailings;

[0024] 4) Copper flotation: Copper flotation for copper magnetic separation tailings, ① 1 roughing: add 800 g / ton of quicklime, 18 g / ton of butyl xanthate, 4 g / ton of thiocarbamate to the copper magnetic separation tailings tons and 2 # Oil 2 g / ton, stirring for 3 minutes; ②1 selection: without adding chemicals, stirring for 1 minute; ③1 sweeping: without adding chemicals, stirring for 2 minutes; obtain copper middlings and copper roughing tailings;

[00...

Embodiment 2

[0029] Copper-sulfur ore with 0.64% Cu, 26.15% pyrrhotite and 8.45% pyrite.

[0030] 1) Raw ore is crushed and ground to a particle size of -0.074mm, accounting for 75%;

[0031] 2) Magnetic separation: the magnetic field strength is 0.5T to obtain pyrrhotite concentrate and pyrrhotite tailings;

[0032] 3) Gradient magnetic separation: Pyrhotite tailings undergo gradient magnetic separation with a magnetic field strength of 1.0T to obtain copper magnetic separation concentrate and copper magnetic separation tailings;

[0033] 4) Copper flotation: Copper flotation for copper magnetic separation tailings, ① 1 roughing: add 300 g / ton of quicklime, 8 g / ton of butyl xanthate, 3 g / ton of thiocarbamate to the copper magnetic separation tailings tons and 2 # Oil 1 g / ton, stirring for 4 minutes; ②1st selection: without adding chemicals, stirring for 1 minute; ③2 times of sweeping: without adding chemicals, stirring for 5 minutes; obtain copper middlings and copper roughing tailings;...

Embodiment 3

[0038] Copper-sulfur ore with 0.92% Cu, 25.12% pyrrhotite and 13.26% pyrite.

[0039] 1) Raw ore crushing and grinding until the particle size is -0.074mm accounts for 70%;

[0040] 2) Magnetic separation: the magnetic field strength is 0.45T to obtain pyrrhotite concentrate and pyrrhotite tailings;

[0041] 3) Gradient magnetic separation: Pyrrhotite tailings undergo gradient magnetic separation with a magnetic field strength of 0.70T to obtain copper magnetic separation concentrate and copper magnetic separation tailings;

[0042] 4) Copper flotation: Copper flotation for copper magnetic separation tailings, ① 1 roughing: add 520 g / ton of quicklime, 12 g / ton of butyl xanthate, 3 g / ton of thiocarbamate to the copper magnetic separation tailings tons and 2 # Oil 1 g / ton, stirring for 4 minutes; ②1 selection: without adding chemicals, stirring for 2 minutes; ③1 sweeping: without adding chemicals, stirring for 3 minutes; obtain copper middlings and copper roughing tailings;

...

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Abstract

The invention discloses a separation method of copper-sulphur ore rich in pyrrhotite and pyrite. The method is characterized by sequentially comprising the steps of breaking and grinding raw ore; carrying out magnetic separation to obtain pyrrhotite concentrate and pyrrhotite tailings; enabling pyrrhotite tailings to be subjected to gradient magnetic separation so as to obtain copper magnetic separation concentrate and copper magnetic separation tailings; enabling the copper magnetic separation tailings to be subjected to copper floatation to obtain copper middlings and copper roughing tailings; combining the copper magnetic separation concentrate and the copper middlings so as to carry out copper selection separation, and obtaining copper concentrate and copper selection tailings; carrying out sulfur flotation on copper roughing tailings, and obtaining sulfur concentrate and sulfur floatation tailings; and combining the copper selection tailings and the sulfur floatation tailings, then carrying out free settling, obtaining tailing water and tailings, and returning the tailing water to serve as water for raw ore grinding and all steps. The separation method of the copper-sulphur ore is easy to operate, small in medicament use amount, low in cost, beneficial to the improvement of the mineral separation index of the copper-sulphur ore, more beneficial to recycling the tailing water of the copper-sulfur mine and environmental protection building, and suitable for the mineral separation of the copper-sulphur ore rich in the pyrrhotite and the pyrite with Cu larger than or equal to 0.10%.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a copper-sulfur ore beneficiation method rich in pyrrhotite and pyrite containing Cu≥0.10%. Background technique [0002] Chalcopyrite [CuFeS 2 ] often with pyrite [FeS 2 ], pyrrhotite [Fe 1-x S] and other sulfide minerals are associated. Raw ore is low in grade and fine in particle size, and is mostly recovered by flotation. Sulfide minerals such as pyrrhotite are easy to oxidize, so that the solution is quickly acidified, and a large amount of metal ions such as Fe are dissolved in the pulp. 3+ , Fe 2+ 、Cu 2+ , and H + etc. At the same time, the beneficiation agent added in the flotation process also produces a large number of ions in the pulp. In the flotation solution, there will be complex interactions between these dissolved ions, between dissolved ions and water molecules, and between dissolved ions and minerals, which will change the interface structure properties of mine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/30B03D1/018
Inventor 周晓彤邓丽红关通付广钦陈远林尚兴科张辉杨飞
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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