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Skarn copper mine beneficiation method

A beneficiation method, skarn technology, applied in the field of skarn copper ore beneficiation, can solve the problems of reducing the economic benefit of the enterprise, deteriorating the flotation slurry environment, and large ore circulation, so as to increase the economic benefit of the enterprise and ensure the copper Concentrate quality and the effect of improving copper recovery rate

Inactive Publication Date: 2017-05-31
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technical scheme, when sulfur-containing mineral inhibitors and pumice-like mineral inhibitors are added at the same time, due to the mutual influence of the two, the environment of the flotation pulp will be deteriorated, and the inhibitory effect of each other will be weakened, which will easily lead to a cycle of ore in the beneficiation. If the quality of copper concentrate is to be guaranteed, the amount of inhibitor must be increased. This will increase the cost of inhibitor use, and on the other hand, it will also affect the recovery rate of copper. Reduce the economic benefits of the enterprise

Method used

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  • Skarn copper mine beneficiation method

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Effect test

Embodiment 1

[0038] Embodiment 1, a certain place in Anhui contains gangue copper ore, and the raw ore contains 0.64% copper and 5.1% sulfur. Technological mineralogy research shows that the copper-containing minerals in this ore are mainly chalcopyrite, the sulfur-containing minerals are mainly pyrite, the gangue minerals are mainly quartz and feldspar, and there are more floating gangue minerals, such as Serpentine, talc, chlorite, etc., whose mineral composition accounts for about 8%, is a typical high-sulfur copper ore containing pumice-containing gangue.

[0039] First, the raw ore is subjected to wet grinding, and the grinding fineness is -0.074mm, accounting for 68%, and the pH regulator CaO is added during the grinding to adjust the pH value of the slurry to 9-10.

[0040] Using thiourethane as the copper selective collector and terpineol as the foaming agent, after one roughing and three sweepings, copper coarse concentrate 1 and tailings 1 are obtained. Among them, the amount of...

Embodiment 2

[0044] Example 2, a skarn-type copper mine in Hubei has a complex mineral composition, and the metal minerals in the ore include pyrite, chalcopyrite, copper blue, blue chalcocite, arsenite, magnetite, molybdenite, Pyrhotite, galena, sphalerite, etc.; gangue minerals include quartz, feldspar (potassium feldspar and plagioclase), mica (muscovite, biotite, phlogopite), actinolite, tremolite , variable pyroxene, garnet (grossmantine, andandrite), chlorite, talc, serpentine, pyrophyllite, kaolinite, siderite, calcite, apatite, rutile, sphene Stone, olivine, phosphate aluminum, zircon and so on. Among them, the recyclable metal element is mainly copper, the copper grade is 0.95%, and the sulfur content of the ore is also relatively high, the sulfur grade is 12.1%. In addition, because there are many types of floating gangue in the ore, especially talc, kaolinite, pyrophyllite, chlorite, etc. (the relative content of minerals accounts for about 4.67%), it is easy to affect the qual...

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Abstract

The invention discloses a skarn copper mine beneficiation method. Firstly, raw skarn copper mine is subject to wet type ore grinding, a pH regulator is added during ore grinding, and the pH of ore pulp is adjusted to be 9 to 10; a copper selectivity collector and a foaming agent are sequentially added into ore pulp treated in the step (1), copper roughing is carried out 1 time to 3 times, copper scavenging is carried out 1 time to 3 times, and first-time copper rough concentrate and first-time tailings are obtained; a sulfur-containing mineral inhibitor and a copper selectivity collector are sequentially added into the first-time copper rough concentrate obtained by treatment in the step (2), fine selection is carried out 2 times to 3 times, refined scavenging is carried out 2 times to 3 times, and second-time copper rough concentrate and second-time tailings are obtained; a floatable gangue mineral inhibitor and a copper strong collector are added into the second-time copper rough concentrate obtained through treatment in the step (3), fine selection is carried out 2 times to 3 times, refined scavenging is carried out 2 times to 3 times, and final copper concentrate and third-time tailings are obtained. By means of the method, the using amount of the inhibitors can be effectively reduced, and the copper recovery rate is improved.

Description

technical field [0001] The invention relates to the technical field of mining and metallurgy, in particular to a beneficiation method for skarn copper ore. Background technique [0002] Skarn copper deposit is a typical copper deposit. Affected by ore genesis, some skarn copper deposits contain more magnesium-containing silicate minerals (such as talc, serpentine, chlorite, Phlogopite, etc.) and sulfur-containing minerals (such as pyrite, etc.). Due to the strong natural hydrophobicity and good floatability of talc, serpentine and other magnesium-containing silicate minerals, during the flotation process, its direction is often consistent with copper minerals. If it is not effectively suppressed, it will affect the copper concentrate. grade, and cause the MgO content of copper concentrate to exceed the standard. The floatability of sulfur-containing minerals such as pyrite is similar to that of copper minerals such as chalcopyrite. During flotation, some sulfur-containing ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B1/00B03D1/018B03D103/02B03D101/06
CPCB03D1/00B03B1/00B03D1/018B03D2201/06B03D2203/02
Inventor 李成必胡志强刘水红曾克文叶岳华王立刚田祎兰刘万峰周高云陈旭波
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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