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A kind of beneficiation method of mixed copper ore with low oxidation rate and high binding rate

A technology of low oxidation rate and beneficiation method, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problem that the low oxidation rate has not been broken through, and the recovery and utilization of low oxidation rate oxygen-sulfur mixed copper ore cannot be solved at the same time. problems, achieve the effects of saving sulfuric acid, low recovery rate, and cost reduction

Active Publication Date: 2018-01-12
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently adopted methods of beneficiation first followed by metallurgy or first metallurgy followed by beneficiation cannot solve the problem of recycling low oxidation rate and high binding rate oxygen-sulfur mixed copper ore at the same time, resulting in oxygen-sulfur mixed copper ore, especially low oxidation rate, There has been no breakthrough in the problem of beneficiation and smelting of high incorporation rate oxygen-sulfur mixed copper ore resources

Method used

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  • A kind of beneficiation method of mixed copper ore with low oxidation rate and high binding rate

Examples

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Effect test

Embodiment 1

[0029] Raw materials: mixed copper ore containing 1.2% copper, 30% oxidation rate, 20% bonding rate, and less than 4% calcium oxide and magnesium content.

[0030] (1) Grinding until 80% of the copper sulfide minerals and free copper oxide minerals are dissociated, add 500g of sodium sulfide to sulfide the free copper oxide minerals per ton of dry mixed copper ore, and add 500g of butyl xanthate As a collector for copper sulfide minerals and free copper oxide minerals after sulfidation, 30g of frother terpineol oil is added to control flotation foam, and oxygen-sulfur mixed copper concentrate is obtained by flotation, leaving some difficult flotation free copper concentrates. Copper oxide and bound copper tailings.

[0031] (2) Roast and desulfurize the oxygen-sulfur mixed copper concentrate to obtain the copper oxide concentrate as the final copper concentrate; the roasting flue gas contains sulfur dioxide gas, and the sulfur dioxide gas produced by the industrial ozone machi...

Embodiment 2

[0036] Raw materials: mixed copper ore with 0.8% copper, 26% oxidation rate, 18% bonding rate, and less than 4% calcium oxide and magnesium content.

[0037] (1) Grinding until 80% of the copper sulfide minerals and free copper oxide minerals are dissociated, add 400g of sodium sulfide to sulfide the free copper oxide minerals per ton of mixed copper ore, and add 400g of isoamyl xanthate As a collector for copper sulfide minerals and free copper oxide minerals after sulfidation, add 40 g of foaming agent No. 2 oil to control flotation foam, and obtain oxygen-sulfur mixed copper concentrate by flotation, leaving some difficult flotation free copper concentrates. Copper oxide and bound copper tailings.

[0038] (2) Roasting and desulfurizing the oxygen-sulfur mixed copper concentrate obtained in step (1) to obtain the copper oxide concentrate as the final copper concentrate; the roasting flue gas contains sulfur dioxide gas, and the flue gas produced by the industrial ozone mach...

Embodiment 3

[0043] Mixed copper ore containing 0.5% copper, 20% oxidation rate, 15% binding rate, and less than 4% calcium oxide and magnesium content.

[0044] (1) Grinding until 80% of the copper sulfide minerals and free copper oxide minerals are dissociated, add 300g of sodium sulfide to sulfide the free copper oxide minerals per ton of mixed copper ore, and add 300g of butyl xanthate as Collector for copper sulfide minerals and free copper oxide minerals after sulfidation, add foaming agent terpineol oil 40g to control flotation foam, flotation to obtain oxygen-sulfur mixed copper concentrate, leave some difficult flotation free oxidation Copper and copper-bound tailings.

[0045] (2) Roasting and desulfurizing the oxygen-sulfur mixed copper concentrate obtained in step (1) to obtain the copper oxide concentrate as the final copper concentrate; the roasting flue gas contains sulfur dioxide gas, and the flue gas produced by the industrial ozone machine is introduced into the flue gas ...

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Abstract

A beneficiation method for a mixed copper ore with a low oxidation rate and a high binding rate. For an oxide-sulfide mixed copper ore with a low oxidation rate and a high binding rate, in the method, a copper sulfide ore and a free copper oxide ore therein are recovered by means of floatation, a floated ore concentrate is desulfurized by roasting to obtain a copper oxide concentrate, flue gas produced after the roasting is used for leaching out difficult-to-float copper oxide and bound copper in flotation tailings, then the tailings are precipitated by sodium sulfide to leach copper ions in ore pulp so as to obtain a copper sulfide sediment, a xanthate is added for floating the copper sulfide sediment to obtain a copper sulfide concentrate, the copper sulfide concentrate and an oxide-sulfide mixed copper concentrate are mixed, then a mixture is desulfurized by roasting, and a final copper oxide concentrate is obtained. According to the method, low-grade tailings are leached out by sulfur dioxide generated by sulfur in an ore concentrate, difficult-to-float free copper oxide and bound copper which are difficult to recover in flotation tailings are recovered, costs are low, and the comprehensive recovery rate of copper is improved significantly.

Description

technical field [0001] The invention relates to a method for beneficiating mixed copper ore with low oxidation rate and high binding rate, and belongs to the technical field of beneficiation. Background technique [0002] Copper ore resources mainly include copper sulfide and copper oxide. Copper sulfide ore accounts for 80% and copper oxide ore accounts for 20%. Due to the large amount of copper sulfide ore resources, ore dressing and recovery are relatively easy, so more than 80% of copper currently comes from copper sulfide ore resources. It is very difficult to recover copper oxide ore, and the recovery rate is low. In today's shortage of copper ore resources, it is imperative to use copper oxide resources efficiently, so the recovery of copper oxide ore has also made some progress. However, in copper ore resources, the surface of copper sulfide deposits is oxidized, forming a huge amount of oxygen-sulfur mixed copper ore resources. Oxygen-sulfur mixed copper ore has e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 文书明谢捷敏陈建文刘绍文罗溪梅张英刘建沈海英白旭聂文林
Owner KUNMING UNIV OF SCI & TECH
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