Method for recovering high-pelitic and high-iron copper oxide ore hard to treat

A technology of copper oxide ore recovery method, which is applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of low recovery rate of copper minerals, high production cost, and low recovery rate of flotation, and achieves increased The effect of resource utilization, improved recycling rate, and smooth flow

Inactive Publication Date: 2016-03-30
HUNAN RES INST FOR NONFERROUS METALS
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AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of low flotation recovery rate of refractory copper oxide ore containing high argillaceous iron, high production cost of wet leaching, and low recovery rate of copper minerals by single m

Method used

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  • Method for recovering high-pelitic and high-iron copper oxide ore hard to treat
  • Method for recovering high-pelitic and high-iron copper oxide ore hard to treat
  • Method for recovering high-pelitic and high-iron copper oxide ore hard to treat

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The raw ore is selected from a high-grade copper oxide mine in Tibet, containing 4.40% copper and 20.76% iron. It is mainly limonite and contains a small amount of hematite. The copper oxidation rate is about 75%. Copper ore, cuprite, azurite, manganite, and some copper minerals are mixed into iron minerals by adsorption or mechanically. 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.

[0027] The mine copper mineral recovery includes the following steps:

[0028] (1) Grinding: Raw ore is ground to a fineness of -0.074mm, accounting for 84%;

[0029] (2) Perform rapid flotation on the ore pulp after grinding, the concentration of the pulp is: 27%, add 1000g / t ammonium sulfate and 3000g / t sodium sulfide as vulcanizing a...

Embodiment 2

[0039]A copper mine in Yunnan has high iron content and large slime content. The ore contains 2.1% copper, 14.85% iron, 20.3% kaolinite, and a copper oxidation rate of about 78%. The copper minerals are mainly malachite and bluestone. Copper ore, goatite, manganite, and some copper minerals are mixed into limonite and kaolinite by adsorption or mechanically, which is difficult to recover. The occurrence state of copper in the ore is complicated, and it mainly occurs in copper sulfide, free copper oxide and bound copper oxide, and the distribution rates are 22%, 57.31%, and 20.69%, respectively. The gangue minerals are mainly clay minerals such as kaolinite.

[0040] The mine copper mineral recovery includes the following steps:

[0041] (1) Grinding: Raw ore is ground to a fineness of -0.074mm, accounting for 80%;

[0042] (2) Perform rapid flotation on the ore pulp after grinding, add 1200g / t ammonium sulfate and 2800g / t sodium sulfide as vulcanizing agents, and stir for 2 ...

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Abstract

The invention relates to a method for sorting high-pelitic and high-iron copper oxide ore hard to treat, and belongs to the technical field of mineral processing. After being ground, raw copper oxide ore is subjected to rapid flotation, so that a high-grade copper concentrate is obtained; then copper minerals hard to float are separated out through segmented flotation, and a low-grade copper concentrate is obtained; and finally a magnetic concentrate is obtained through high-gradient magnetic separation. Compared with a traditional copper oxide flotation method, the recovery rate of the method is higher by 15%-35%, and interference of mud and iron is avoided. The technological process is stable, high in adaptability, low in production cost, high in copper recovery rate and capable of being industrially implemented.

Description

technical field [0001] The invention relates to a method for recovering high-mud iron refractory copper oxide ore, which belongs to the technical field of mineral processing. Background technique [0002] Copper is one of the most widely used metals in the development of the national economy and occupies a very important position in China's national economy. There are 1,426 identified copper mining areas across the country (including 187 associated mining areas), and the identified resource reserves are 71.57 million tons. Its basic reserves are 29.32 million tons and resources are 42.25 million tons. my country has a huge market demand for copper resources, but copper resources are in short supply, and more than 60% of them need to be imported. In my country's copper resources, copper oxide resources account for more than a quarter, and the amount of resources is huge. There are oxidation zones on the upper part of most copper deposits, and some copper deposits have form...

Claims

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Application Information

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IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 陈代雄胡波杨建文李晓东薛伟肖骏董艳红其他发明人请求不公开姓名
Owner HUNAN RES INST FOR NONFERROUS METALS
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