Recovery method of high-iron highly-argillaceous alkaline gangue refractory oxide copper ore

A recovery method and difficult-to-handle technology, applied in chemical instruments and methods, wet separation, high-gradient magnetic separation, etc., can solve the problems of high production cost of wet leaching, low recovery rate of copper minerals, low recovery rate of flotation, etc. problems, to achieve the effect of high cost, low leaching rate, and increased consumption of chemicals

Inactive Publication Date: 2015-08-05
HUNAN RES INST FOR NONFERROUS METALS
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Problems solved by technology

[0008] For refractory copper oxide ore containing high iron and high muddy alkaline gangue, poor floatability of copper minerals containing magnetic impurities, low flotation recovery rate, high production cost of wet leaching, and low recovery rate of copper m

Method used

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Embodiment Construction

[0021] Below in conjunction with embodiment the present invention will be further described

[0022] Example 1

[0023] The raw ore is selected from a high-grade copper oxide mine in Tibet. The raw ore has high iron content and large slime content. The ore contains 4.40% copper, 20.76% iron, and a copper oxidation rate of about 65%. The copper minerals are mainly malachite and blue copper. Copper-manganese-iron-aluminum-silicon oxide complexes, copper ore, copper-manganese-iron-aluminum-silicon oxide combination, a large number of copper minerals are mixed with iron by adsorption or mechanically, which makes it difficult for copper minerals, especially copper oxide, to float up. The occurrence state of copper in the ore is complicated, mainly in free copper oxide and secondary copper sulfide, with distribution rates of 41.50% and 34.31% respectively; secondly, in the form of bound copper oxide, with a distribution rate of 27.83%. The gangue minerals are mainly clay minerals...

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Abstract

The invention relates to a recovery method of a high-iron highly-argillaceous alkaline gangue refractory oxide copper ore, and belongs to the technical field of ore processing. A raw oxide copper ore is ground for mixed flotation by sulfur and oxygen to obtain a sulfur-oxygen mixed flotation concentrate and a flotation tailing; through high-gradient magnetic separation of the flotation tailing, a refractory oxide copper magnetic separation rough concentrate and a magnetic separation tailing are obtained; the open selection is performed for the oxide copper magnetic separation rough concentrate obtained through the high-gradient magnetic separation for 2-3 times to obtain an oxide copper magnetic separation concentrate and a magnetic separation middling; and wet leaching is performed for the magnetic separation middling. The recovery rate of the recovery method is increased by 15-25% compared with single floatation. The recovery method solves the problems of low recovery rate of conventional vulcanization flotation to high-iron-content oxide copper minerals, high agent consumption, low leaching rate, high energy consumption, easy hardening and high production cost in the process of wet leaching of highly-argillaceous alkaline gangue oxide copper and low recovery rate of single magnetic separation to copper minerals. The recovery method guarantees high-efficiency recovery of high-iron highly-argillaceous alkaline gangue refractory oxide copper. The recovery method is stable in process flow, strong in adaptability and low in production cost, and facilitates the industrial implementation.

Description

technical field [0001] The invention relates to a method for recovering refractory copper oxide ore with high-iron, high-mud and alkaline gangue, belonging to the technical field of mineral processing. Background technique [0002] Copper is an important non-ferrous metal related to the national economy and people's livelihood. It is widely used in electrical, mechanical manufacturing, energy and military industries due to its excellent properties such as electrical conductivity, thermal conductivity, tensile strength, and wear resistance. With the development of the national economy, my country's demand for copper continues to increase. There is a serious shortage of copper ore resources available for industrial mining and utilization in my country, and copper sulfide ore and easy-to-select rich ore are decreasing day by day. Therefore, it is of great significance to strengthen the research on the separation technology of refractory copper ore and improve its comprehensive ...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/00B03D1/08B03C1/02
CPCB03B7/00B03C1/002B03D1/00
Inventor 胡波陈代雄薛伟杨建文董艳红李晓东
Owner HUNAN RES INST FOR NONFERROUS METALS
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