Gold ore grinding classification system and grinding classification processing technology

A grading system and grading processing technology, which is applied in grain processing, solid separation, wet separation, etc., can solve the problems of low equipment processing capacity, low equipment utilization rate, ore muddying, etc., achieve simple structure layout, and improve processing capacity , Reduce the effect of sand return ratio

Pending Publication Date: 2018-12-04
DULAN JINHUI MINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the layout of this treatment process is simple, there are problems such as low equipment utilization rate, low equipment processing capacity, serious slurry muddy phenomenon, and low recovery rate.

Method used

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  • Gold ore grinding classification system and grinding classification processing technology
  • Gold ore grinding classification system and grinding classification processing technology
  • Gold ore grinding classification system and grinding classification processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] like figure 1 As shown, a kind of gold ore grinding and grading system in this embodiment includes a two-stage grinding and grading system, and the one-stage grinding and grading system includes a semi-autogenous mill 4, a cylindrical sieve 5, 1 # Classification pump pool 6 and inspection classification cyclone group 8, the second stage grinding and classification system includes ball mill 9, 2 # Classification pump pool 10 and control classification cyclone group 11.

[0032] The raw ore in the fine ore bin 1 is transported to the semi-autogenous mill 4 through the raw ore belt conveyor 2, and the cylindrical screen 5 is set at the ore discharge port of the semi-autogenous mill 4. 1 # The grading pump pool 6 is arranged under the cylindrical screen 5, and the ore discharge port of the cylindrical screen 5 is connected with a chute 7, and the other end of the chute 7 is connected to the return belt conveyor 3, and the return belt conveyor 3 is connected to the raw ore ...

Embodiment 2

[0043] The system structure of this embodiment is basically the same as that of Embodiment 1, the difference is:

[0044] like image 3 As shown, in this embodiment, the inspection and classification cyclone group 8 includes a plurality of cyclones 801, and the cyclone 801 is provided with two overflow pipes, respectively overflow pipe one 811 and overflow pipe two 812, Overflow pipe 2 812 is set in overflow pipe 1 811 and extends into the cyclone through the inlet of overflow pipe 1, and the discharge port of overflow pipe 1 811 is connected to the flotation stirring tank, overflow pipe 2 812 The discharge port is connected to the 2nd stage of the two-stage grinding and classification system # The grading pump pool and the grit outlet of the cyclone 801 are connected to the ball mill. Two overflow pipes are set in the cyclone of the cyclone group, in which the fine material after separation is directly discharged into the flotation operation through the outlet of overflow p...

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PUM

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Abstract

The invention discloses a gold ore grinding classification system and grinding classification processing technology. The grinding classification system includes a first section grinding classificationsystem and a second section grinding classification system. The first section grinding classification system comprises a semi-autogenous mill, a cylinder screen, a first classification pump pool andan inspection classification hydrocyclone group, and the second section grinding classification system comprises a ball grinding mill, a second classification pump pool and a control classification hydrocyclone group. Compared with original one-time screening processing, the gold ore grinding classification system reduces the sand-returning ratio of the semi-autogenous mill and improves the sand-returning ratio of the ball grinding mill, part of qualified materials in ore discharge of the semi-autogenous mill performs flotation operation in advance, the load of the two-stage ore grinding millsis optimized, the particle size composition of grinding products is optimized, the argillation problem caused by over-grinding is avoided, and the recovery rate of the ore dressing is improved.

Description

technical field [0001] The invention relates to the technical field of gold ore beneficiation, in particular to a gold ore grinding and grading system and a grinding and grading process. Background technique [0002] Gold is one of the earliest precious metals discovered and used by human beings. Because of its financial, currency and commodity attributes, gold is different from other metals and has become a very important strategic mineral. A vital resource essential to progress. Due to the restriction of the existing gold ore beneficiation technology in our country, the concentrate grade and recovery rate in the process of gold ore separation are still low, resulting in a partial waste of gold ore resources. The new method of improving the grade and recovery rate, improving the utilization efficiency of gold ore resources, and alleviating the international situation of shortage of gold ore in our country have become the top priority of mineral processing work. So far, fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B02C21/00B02C23/14
CPCB02C21/00B02C23/14B03B7/00
Inventor 明平田马学旺马忠山谢卓宏乔廷
Owner DULAN JINHUI MINE CO LTD
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