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Separation method for copper bismuth bulk concentrates

A copper-bismuth mixed concentrate and separation method technology, applied in the mineral processing field, can solve problems such as poor separation effect, high toxicity, and environmental pollution, and achieve high recovery rate, improved recovery rate, and good quality effects

Active Publication Date: 2013-08-14
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

The process uses potassium dichromate as the inhibitor of bismuth minerals, which not only has high toxicity and pollutes the environment, but also contains up to 2.2% bismuth in the copper concentrate, and the separation effect is poor.

Method used

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  • Separation method for copper bismuth bulk concentrates
  • Separation method for copper bismuth bulk concentrates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 1000 g / t of activated carbon to the copper-bismuth mixed concentrate, grind the ore to -0.074mm to account for 85%, thicken and dehydrate; add water to the pulp concentration of 35%; carry out shaker gravity separation on the copper-bismuth mixed concentrate after pulping According to the medicament consumption operation listed in table 1, finally obtain copper concentrate and bismuth concentrate; Copper grade is 20.05% in the copper concentrate, copper recovery rate is 96.10%, contains bismuth 0.73%, and bismuth grade in the bismuth concentrate is 35.80%, the bismuth recovery rate is 94.20%, and the copper content is 2.46%.

Embodiment 2

[0021] Add 1500 g / t of activated carbon to the copper-bismuth mixed concentrate, grind the ore to -0.074mm to account for 80%, thicken dehydration, add water to the pulp concentration of 35%, and carry out shaker gravity separation on the copper-bismuth mixed concentrate after pulping , operate according to the amount of reagents listed in Table 1, and finally obtain copper concentrate and bismuth concentrate. The copper grade in the copper concentrate is 20.83%, the copper recovery rate is 96.35%, and the bismuth content is 0.75%. 35.28%, the bismuth recovery rate is 94.91%, and the copper content is 2.06%.

Embodiment 3

[0023] Add 1000 g / t of activated carbon to the copper-bismuth mixed concentrate, grind the ore to -0.074mm to account for 80%, thicken and dehydrate, add water to the pulp concentration of 40%, and shake the copper-bismuth mixed concentrate after pulping.

[0024] Table 1 The amount of flotation agents used in Examples 1-6 (g / t·copper-bismuth mixed concentrate)

[0025]

[0026] According to the dosage operation listed in Table 1, copper concentrate and bismuth concentrate are finally obtained; the copper grade in the copper concentrate is 20.31%, the copper recovery rate is 96.76%, and the bismuth content is 0.77%, and the bismuth grade in the bismuth concentrate is The recovery rate of bismuth is 35.28%, the recovery rate of bismuth is 93.60%, and the copper content is 2.13%.

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Abstract

Disclosed is a separation method for copper bismuth bulk concentrates. The separation method is characterized by including adding activated carbon into the copper bismuth mixed concentrates grinding, mixing pulp, performing gravity concentration to obtain gravity bismuth concentrates, concentrating gravity tailings, mixing pulp, and adding regulators, depressors, collectors and foaming agents to perform copper bismuth flotation separation so as to obtain copper concentrates and flotation bismuth concentrates respectively. In the copper concentrates obtained by the preparation method, grade of copper is higher than 20%, copper recovery rate reaches 96-97%, grade of bismuth is higher than 35%, and bismuth recovery rate reaches 93-95%. The separation method is simple in process, environment-friendly, good in separation effect, high in grading index, economical and reasonable.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and mainly relates to a method for separating mixed concentrates containing copper and bismuth. Background technique [0002] Bismuth has excellent properties such as non-toxicity, corrosion resistance and good color. It has a wide range of applications and is gradually replacing toxic elements such as cadmium, antimony, mercury, and lead. It is known as "green metal". Bismuthite is the main source of bismuth, and it is generally closely symbiotic with chalcopyrite, and has the characteristics of fine and uneven embedded particle size and complex mineral composition. [0003] At present, the methods for separating copper-bismuth mixed concentrate mainly include gravity separation, flotation and hydrometallurgy-flotation. Among them, the flotation method is the most common, and it is divided into two processes: one is the cyanide process, which suppresses chalcopyrite by adding sodium ...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/00
Inventor 汪泰叶富兴胡真李汉文汤玉和王成行宋宝旭邹坚坚
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI