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Non-ferrous metal ore pre-dressing and waste discarding method

A non-ferrous metal and fine ore technology, applied in solid separation, grain processing, etc., can solve the problems of large metal loss, low recovery rate of non-ferrous metal ore, low accuracy, etc., to achieve small metal loss, high degree of automation, The effect of high beneficiation accuracy

Pending Publication Date: 2021-11-12
GANZHOU NONFERROUS METALLURGICAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the methods for pre-selection and discarding of non-ferrous metal ore raw ores mainly include sorting (hand selection, machine selection) and jigging sorting, but these two methods are not accurate, and the amount of metal loss is large. The recovery of non-ferrous metal ore low rate

Method used

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  • Non-ferrous metal ore pre-dressing and waste discarding method
  • Non-ferrous metal ore pre-dressing and waste discarding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] pair containing WO 3 0.309% wolframite raw ore is pre-selected and discarded, the steps are as follows:

[0064] (1) After crushing the wolframite raw ore to -80mm, carry out screening and classification pretreatment, and divide it into three grades of -80+12mm, -12+0.5mm and -0.5mm, of which -0.5mm grade products are directly used as Qualified mine;

[0065] (2) Use an intelligent ore sorting machine to pre-select and discard the -80+12mm grain grade products to obtain rough concentrates, crush the obtained rough concentrates to -12mm, and then screen and classify them into -12+0.5mm and -0.5mm; Among them, -0.5mm grain size products are directly regarded as qualified ore;

[0066] (3) The -12+0.5mm particle size product obtained in step (1) and step (2) is pre-selected and discarded by dense medium beneficiation equipment. 0.5mm, the obtained concentrate is regarded as qualified ore, and the three parts of qualified ore are combined.

[0067] After the above pre-s...

Embodiment 2

[0069] pair containing WO 3 0.245% wolframite raw ore is pre-selected and discarded, the steps are as follows:

[0070] (1) After crushing the wolframite raw ore to -80mm, carry out screening and classification pretreatment, and divide it into three grades of -80+12mm, -12+0.5mm and -0.5mm, of which -0.5mm grade products are directly used as Qualified mine;

[0071] (2) Use an intelligent ore sorting machine to pre-select and discard the -80+12mm grain grade products to obtain rough concentrates, crush the obtained rough concentrates to -12mm, and then screen and classify them into -12+0.5mm and -0.5mm; Among them, -0.5mm grain size products are directly regarded as qualified ore;

[0072] (3) The -12+0.5mm particle size product obtained in step (1) and step (2) is pre-selected and discarded by dense medium beneficiation equipment. 0.5mm, the obtained concentrate is regarded as qualified ore, and the three parts of qualified ore are combined.

[0073] After the above pre-s...

Embodiment 3

[0075] pair containing WO 3 0.212% wolframite raw ore is pre-selected and discarded, the steps are as follows:

[0076] (1) After crushing the wolframite raw ore to -80mm, carry out screening and classification pretreatment, and divide it into three grades of -80+12mm, -12+0.5mm and -0.5mm, of which -0.5mm grade products are directly used as Qualified mine;

[0077] (2) Use an intelligent ore sorting machine to pre-select and discard the -80+12mm grain grade products to obtain rough concentrates, crush the obtained rough concentrates to -12mm, and then screen and classify them into -12+0.5mm and -0.5mm; Among them, -0.5mm grain size products are directly regarded as qualified ore;

[0078] (3) The -12+0.5mm particle size product obtained in step (1) and step (2) is pre-selected and discarded by dense medium beneficiation equipment. 0.5mm, the obtained concentrate is regarded as qualified ore, and the three parts of qualified ore are combined.

[0079] After the above pre-s...

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Abstract

The invention relates to the technical field of ore dressing, and provides a non-ferrous metal ore pre-dressing and waste discarding method. The non-ferrous metal ore pre-dressing and waste discarding method comprises the following steps: first coarse ore, first fine ore and first qualified ore are obtained through crushing and first screening and grading, the first coarse ore is subjected to pre-dressing and waste discarding through intelligent ore dressing, gangue tailings in the first coarse ore are removed, the remaining first coarse concentrate is crushed and then subjected to second screening and grading, and second fine ore and second qualified ore are obtained; and finally, the first fine ore and the second fine ore are subjected to pre-dressing and waste discarding through dense medium ore dressing, gangue tailings in the first fine ore and the second fine ore are further removed, and concentrate obtained through dense medium ore dressing is qualified ore. In addition, according to the invention, intelligent ore dressing or dense medium dressing can be independently used for pre-dressing and waste discarding, and the process steps are simpler. The method is high in automation degree, high in ore dressing accuracy, high in recovery rate for nonferrous metal ore, high in waste discarding rate, free of limitation on ore types, and wide in application range.

Description

technical field [0001] The invention relates to the technical field of ore dressing, in particular to a nonferrous metal ore preselection and discarding method. Background technique [0002] Non-ferrous metal ores refer to all metal ores except ferrous metal ores, including copper, lead, zinc, nickel, cobalt, tungsten, tin and other heavy metal ores, aluminum and magnesium and other light metal ores, gold, silver, platinum and other precious metal ores and Rare metal minerals, rare earth metal minerals, etc. These minerals are indispensable to modern industry, agriculture, national defense and science and technology, and are widely used in various alloys, machinery, ships, electrical, military and civilian appliances, and are irreplaceable basic raw materials for high-tech development. [0003] With the long-term large-scale development and utilization of non-ferrous metal mineral resources, most mining enterprises are facing problems such as resource depletion and grade de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B03B9/00
CPCB02C21/00B03B9/00
Inventor 沈新春李平李振飞古吉汉张婷袁亚君王强强李秀珍张文谱陈世宁
Owner GANZHOU NONFERROUS METALLURGICAL RES INST
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