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Pelletizing-heap bioleaching process suitable for low grade oxygen sulfur mixed copper mine

A mixed copper ore, low-grade technology, applied in the direction of process efficiency improvement, etc., can solve the problems of poor permeability, and achieve low production cost, good permeability, and environmental friendliness

Active Publication Date: 2018-06-26
有研资源环境技术研究院(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Based on this, the object of the present invention is to provide a kind of granulation-biological heap leaching process suitable for low-grade oxygen-sulfur mixed copper ore, which can solve the problem of poor permeability during heap leaching of ore containing fine ore, and select a Ore granulation with suitable acid-resistant binder

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  • Pelletizing-heap bioleaching process suitable for low grade oxygen sulfur mixed copper mine
  • Pelletizing-heap bioleaching process suitable for low grade oxygen sulfur mixed copper mine
  • Pelletizing-heap bioleaching process suitable for low grade oxygen sulfur mixed copper mine

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Embodiment 1

[0040] The oxygen-sulfur mixed copper ore used comes from a certain place in Xinjiang. The results of its chemical multi-element analysis are shown in Table 1, the results of particle size screening of -5mm grain size ore for granulation are shown in Table 2, and the results of phase analysis of copper are shown in Table 1. 3.

[0041] Table 1 Analysis results of main elements of oxygen-sulfur mixed copper ore

[0042] element

Cu

Fe

S

Ca

Mg

Al

content / %

0.77

5.10

0.22

7.60

1.79

8.22

[0043] Table 2 - 5mm particle size ore particle size screening results for granulation

[0044]

[0045]

[0046] Table 3 Copper Phase Analysis Results of Oxy-Sulfur Mixed Copper Ore

[0047] copper phase

Copper oxide

secondary copper sulfide

native copper sulfide

copper in silicate

total copper

content / %

0.508

0.059

0.183

0.020

0.77

Occupancy / %

65.97

7.66

23.77...

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Abstract

The invention provides a pelletizing-heap bioleaching process suitable for low grade oxygen sulfur mixed copper mine. The pelletizing-heap bioleaching process comprises the following steps that (1) raw ore is crushed and screened; (5) -5 mm fraction mineral pelletizing is carried out; (3) curing is carried out; (4) concentrated acid adding for curing is carried out; (5) heap construction and spraying leaching are carried out; and (6) lixivium is subject to extraction-electrodeposition for producing a cathode copper product. The pelletizing-heap bioleaching process is short in flow, easy to operate, saving in investment, low in production cost, environment-friendly and high in resource utilization level. The process has wide application prospects in development and utilization of low-gradeoxygen sulfur mixed copper mine resources.

Description

technical field [0001] The invention relates to a granulation-biological heap leaching process suitable for low-grade oxygen-sulfur mixed copper ore, and belongs to the technical field of biological hydrometallurgy. Background technique [0002] There are a large number of low-grade oxygen-sulfur mixed copper ores in the world, which are mainly distributed in Yunnan, Tibet, Xinjiang, Hubei, Sichuan and other provinces in my country. They have complex symbiosis of sulfide ore and oxide ore, high oxidation rate and bonding rate, and low mud content. advanced features. At present, the processing methods for high-grade oxygen-sulfur mixed copper ore include flotation, atmospheric and high-pressure ammonia leaching, mixed acid leaching, and biological heap leaching. With the increasing depletion of high-grade, easy-to-handle copper ore resources, increasingly depleted and complex copper ore resources, and increasingly stringent environmental protection requirements, the developme...

Claims

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Application Information

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IPC IPC(8): C22B3/18C22B1/244C22B15/00
CPCC22B1/244C22B3/18C22B15/0065Y02P10/20
Inventor 温建康罗毅武彪陈勃伟尚鹤刘美林莫晓兰
Owner 有研资源环境技术研究院(北京)有限公司
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