Chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method

A copper sulfide, coarse-grained technology, applied in flotation, chemical instruments and methods, solid separation, etc., can solve the problems of insufficient flotation time, tailing of useful minerals, excessive crushing and loss, etc., and achieves easy industrial application and production cost. Low, the effect of achieving stability

Inactive Publication Date: 2019-10-01
ZIJIN MINING GROUP
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AI Technical Summary

Problems solved by technology

Through the efforts of mineral processing scientific and technological personnel, the research on flotation technology and flotation reagents has been relatively mature for the flotation of copper sulfide ore. However, for some special copper sulfide ores with high-grade coarse grain embedded distribution, Its copper minerals mainly exist in types of copper sulfide ores such as chalcocite, blue chalcocite and copper blue. Due to the brittle nature of the ore itself, it is easy to dissociate during the crushing process, and due to the difference in specific gravity with gangue In addition, the raw ore contains high copper, so in practice, there are the following problems in the flotation of such high-grade coarse-grained special copper sulfide ore: First,

Method used

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  • Chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method

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Effect test

Embodiment 1

[0031] According to the dry weight of copper sulfide ore per ton, 1000g / t of calcium oxide is added to the raw ore, and after ball milling until the ore discharge is -74um, about 25% enters the classification system, and the graded sand fineness is -74um, accounting for 15%, and the graded overflow The fineness is -74um, accounting for 65%. The graded sand settling directly enters the flash flotation system, and the graded overflow enters the conventional flotation system. The dosage of highly selective collector LY01 is 15g / t, and the dosage of foaming agent 2# oil is 10g / t. After flash flotation, the yield of concentrate 1 is 1.75%, the grade of copper is 39.82%, and the grade of sulfur is 47.26%; graded overflow enters the conventional flotation operation, adding a strong collector LY02 dosage of 30g / t, foaming agent 2# oil dosage of 15g / t and sorting, the yield of concentrate 2 is 5.08%, the copper grade is 25.58%, and the sulfur grade is 40.56%; the comprehensive concentr...

Embodiment 2

[0033] According to the dry weight of copper sulfide ore per ton, 1000g / t of calcium oxide is added to the raw ore, and after ball milling until the ore discharge is -74um, about 25% enters the classification system, and the graded sand fineness is -74um, accounting for 15%, and the graded overflow The fineness is -74um, accounting for 64%. The graded sand settling directly enters the flash flotation system, and the graded overflow enters the conventional flotation system. The dosage of highly selective collector LY01 is 13g / t, and the dosage of foaming agent 2# oil is 12g / t. After flash flotation, the yield of concentrate 1 is 1.73%, the grade of copper is 39.99%, and the grade of sulfur is 48.01%; graded overflow enters the conventional flotation operation, adding a strong collector LY02 dosage of 28g / t, foaming agent 2# oil dosage of 18g / t and then sorting, the yield of concentrate 2 is 4.83%, the copper grade is 27.40%, the sulfur grade is 46.22%; the comprehensive concent...

Embodiment 3

[0035] According to the dry weight of copper sulfide ore per ton, 1000g / t of calcium oxide is added to the raw ore, and after ball milling until the ore discharge is -74um, about 25% enters the classification system, and the graded sand fineness is -74um, accounting for 15%, and the graded overflow The fineness is -74um, accounting for 63%. The graded sand settling directly enters the flash flotation system, and the graded overflow enters the conventional flotation system. The dosage of highly selective collector LY01 is 15g / t, and the dosage of foaming agent 2# oil is 12g / t. After flash flotation, the yield of concentrate 1 is 1.93%, the grade of copper is 38.36%, and the grade of sulfur is 47.23%; graded overflow enters the conventional flotation operation, adding a strong collector LY02 dosage of 35g / t, foaming agent 2# oil dosage of 12g / t and then sorting, the yield of concentrate 2 is 5.06%, the copper grade is 24.95%, the sulfur grade is 42.62%; the comprehensive concent...

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Abstract

The invention relates to a chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method. According to the chalcocite-contained coarse-grain disseminatedcopper sulfide ore step-by-step ore grinding flotation method, raw ores are subjected to ore grinding and then are graded into two kinds of ore pulp, namely, overflow d and setting sand c to form twoloops to be subjected to flash flotation and conventional flotation correspondingly; during one loop of flash flotation, a high-selectivity collecting agent (2) and a foaming agent (3) are added to the setting sand c ore pulp fed into a single-tank flash flotation machine to be subjected to optimized flotation to obtain a copper concentrate product 1 and flash flotation tailings f; the concentrate grade and the recovery rate of the copper concentrate product 1 can be ensured, ore feeding fluctuation of conventional flotation can be reduced, the stability of the preparation process is improved, and valuable minerals in ores can be recovered as early as possible; during the other loop of conventional flotation, calcium oxide (1), a high-collectivity collecting agent (4) and the foaming agent (3) are added to the overflow d ore pulp to be subjected to stirring and conventional flotation to enable valuable metals such as gold, silver and copper in the overflow d to be enriched into copperconcentrate 2h and remove tailings 1. The chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method has the advantages of being simple in operation,smooth in process, easy to apply industrially, high in recovery rate, low in production cost, good in comprehensive benefit and the like and is particularly suitable for mineral separation of chalcocite-contained coarse-grain disseminated copper sulfide ores.

Description

technical field [0001] The invention relates to a step-by-step grinding and flotation method for chalcocite-containing coarse-grain embedded copper sulfide ore, which is suitable for beneficiation application of chalcocite-containing coarse-grain embedded copper sulfide ore. Background technique [0002] In copper sulfide ore, copper is dominated by copper sulfide minerals, mainly including chalcopyrite, chalcocite, blue chalcocite, bornite and copper blue, etc. Copper sulfide ore is often a variety of minerals symbiotic , not only contains a variety of useful and recyclable copper sulfide minerals, but also contains a large amount of gangue minerals. Therefore, in order to obtain copper concentrates with high purity and directly used for smelting, it is necessary to enrich the copper minerals in the ore. Among them, flotation is a more commonly used method. Through the efforts of mineral processing scientific and technological personnel, the research on flotation technolog...

Claims

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Application Information

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IPC IPC(8): B03B1/00B03B7/00B03B9/00B03D1/02B03D1/014B03D103/02B03D101/02B03D101/04
CPCB03B1/00B03B7/00B03B9/00B03D1/014B03D1/02B03D1/028B03D2201/02B03D2201/04B03D2203/02
Inventor 廖银英杨远坤王金庆吕兵超岳丽琴罗增鑫张兴勋梁东荣邱筱燕江全秀
Owner ZIJIN MINING GROUP
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