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A beneficiation process for polymetallic sulfide ore containing secondary copper

A multi-metal and sulfide ore technology, applied in flotation, solid separation, etc., can solve the problems of serious product intercontainment, small difference in mineral floatability, etc., and achieve the effects of low price, simplified flotation separation conditions, and wide sources

Inactive Publication Date: 2016-08-24
WUPING ZIJIN MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that polymetallic sulfide ores containing secondary copper are prone to produce free copper ions, thereby activating sphalerite and pyrite, making the difference in floatability between minerals small, and the products contain serious problems such as

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0033] The beneficiation process of polymetallic sulfide ore containing secondary copper described in this embodiment uses a certain copper sulfide lead-zinc mine in Baiyin as an ore sample. is 5.04%, Fe grade is 12.91%.

[0034] (1) According to the ratio of adding 3g of iron powder with a particle size of 44μm per 100g of water, add the iron powder into the water, stir and mix well, and heat to boil to obtain a suspension;

[0035] (2) Add iron powder suspension in the mill according to the ratio of 0.4% of the ore solid mass in the pulp, and coarsely grind in the mill for 5 minutes;

[0036] (3) Separation adopts the principle process of stage grinding, stage separation, copper-lead mixed flotation, and then zinc separation, copper-lead mixed concentrate separation. The reagent system for copper-lead mixed flotation roughing is that the regulator is lime 4000g / t, ZnSO 4 800g / t, NaCN 20g / t, the collector is 20g / t ethiazide and 50g / t butyl xanthate, the foaming agent is ...

Embodiment 2

[0039] The beneficiation process of polymetallic sulfide ore containing secondary copper described in this example takes a copper sulfide lead-zinc mine in Yunnan as an ore sample, the raw ore Cu grade is 0.64%, the secondary copper content is 18.36%, the Pb grade is 5.11%, and the Zn grade It is 7.28%, and the ore contains 53.4g / t silver.

[0040] (1) Add iron powder into water at the ratio of 6g iron powder with a particle size of 100μm per 100g of water, stir and mix well and heat to boiling to obtain a suspension;

[0041] (2) Add iron powder suspension in the stirring tank according to the ratio of 0.7% of the ore solid mass in the pulp, and stir in the stirring tank for 10 minutes to make it fully react;

[0042] (3) Flotation adopts the technological process of copper-lead mixed separation, and then separation of zinc and copper-lead mixed concentrate. The reagent system in the roughing stage of copper-lead mixed flotation is 2000g / t lime as regulator, ZnSO 4 800g / t,...

Embodiment 3

[0045] The beneficiation process of polymetallic sulfide ore containing secondary copper described in this example takes a copper sulfide lead-zinc mine in Guizhou as an ore sample. The raw ore Cu grade is 1.36%, the secondary copper content is 21.58%, the Pb grade is 6.39%, and the Zn grade It is 7.86%, and the raw ore contains 42.8g / t of silver.

[0046] (1) According to the ratio of adding 10g iron powder with a particle size of 150μm per 100g of water, add iron powder into water, stir and mix well, and heat to boil to obtain a suspension;

[0047] (2) Add iron powder suspension in the stirring tank according to the proportion of 1% of the ore solid mass in the pulp, and stir in the stirring tank for 15 minutes to make it fully react;

[0048] (3) Separation adopts the principle process of stage grinding, stage separation, copper-lead mixed flotation, and then zinc separation, copper-lead mixed concentrate separation. The agent system of copper-lead mixed flotation roughin...

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Abstract

The invention relates to a beneficiation process for polymetallic sulfide ores containing secondary copper, belonging to the technical field of mineral processing. The method of the present invention is as follows: take iron powder with a particle size of 10-150 μm and prepare a 1%-10% suspension; add iron powder to the mill or stirring tank according to 0.1%-1% of the ore solid mass in the pulp Suspension, followed by the conventional flotation method to obtain the final concentrate product; the iron powder added to the mill and the mineral particles form a primary battery, so that the free copper ions in the slurry are replaced, reducing the impact of free copper ions on sphalerite The activation of pyrite and pyrite makes the difference in buoyancy between minerals larger, and the intercontainment phenomenon of concentrate products is small, thereby improving the index of mineral processing products. The method of the invention has the advantages of good flotation index, saving chemicals, simplifying the ore dressing process and the like.

Description

technical field [0001] The invention relates to a beneficiation process for polymetallic sulfide ores containing secondary copper, belonging to the technical field of mineral processing. Background technique [0002] In my country's polymetallic sulfide ores, especially copper-containing polymetallic sulfide ores, often contain more secondary copper sulfide minerals, such as chalcocite, copper blue, bornite and other minerals, secondary copper sulfide minerals are easily Copper ions are generated to activate sphalerite and pyrite; during the grinding process, secondary copper minerals are easily oxidized, and copper ions are also generated to activate part of sphalerite and pyrite, thereby making these sphalerite The floatability of pyrite and pyrite is good, which affects the flotation separation of minerals such as copper, lead, zinc, and sulfur; it makes the copper, lead, zinc, and sulfur minerals contain each other seriously, and the flotation concentrate index is poor, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D103/02
Inventor 冉金城刘全军张治国邓荣东
Owner WUPING ZIJIN MINING CO LTD
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