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Ore grinding mineral dressing process for large molybdenum ore

A molybdenum ore and large-scale technology, which is applied in the field of grinding and beneficiation of large-scale molybdenum ore, can solve difficult copper recovery and other problems, achieve rapid failure, reduce equipment investment and operation costs, and reduce processing difficulty and equipment investment.

Active Publication Date: 2019-06-11
伊春鹿鸣矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the development and utilization of mineral resources, those high-grade, low-impurity mineral resources that are conducive to development gradually disappear, followed by low-grade, associated complex "poor, fine, and miscellaneous" ores; at present, my country's molybdenum Most of the molybdenum in the ore is about 0.1%, and the copper content is about 0.02%. The useful minerals are mainly molybdenite, chalcopyrite, chalcocite, and pyrite; in addition to recycling molybdenum, copper can also be comprehensively recovered; traditional molybdenum It is difficult for mines to recycle copper effectively due to the limitation of scale. With the increase of mine scale, it is possible to recycle copper and improve the comprehensive utilization rate of resources; the present invention has developed a large-scale molybdenum mine. Grinding and beneficiation process for recovering copper

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  • Ore grinding mineral dressing process for large molybdenum ore

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Embodiment 1

[0018] Embodiment one: if figure 1 Shown, the ore grinding and beneficiation process of a kind of large-scale molybdenum ore involved in the present embodiment, such as figure 1 As shown, in the ore grinding and beneficiation process of the present invention, the raw ore contains molybdenum metal of 0.088%-0.150% and copper metal of 0.016%-0.030%, and its main minerals are molybdenite, chalcopyrite, and chalcocite. Grinding and beneficiation steps are as follows:

[0019] The raw ore with a particle size of 0-250mm, a molybdenum grade of 0.088%-0.150%, and a copper grade of 0.016%-0.030% is fed into the SABC closed circuit composed of semi-autogenous grinding, linear vibrating screen, cyclone, ball mill and cone crusher. Grinding and grading system; the particle size of the grinding product is -0.074mm, accounting for 58-62%, and the pulp with a concentration of 28%-33% is fed into the flotation process after pulping;

[0020] The copper and molybdenum mixed flotation proces...

Embodiment 2

[0024] Embodiment two: if figure 1 Shown, the ore grinding and mineral processing technology of a kind of large-scale molybdenum ore involved in the present embodiment, the medicament system among the present invention is:

[0025] Add collector (kerosene) 30g / t-160g / t to molybdenum selection operation; copper inhibitor (sodium thioglycolate) 80g / t-200g / t; adjuster (liquid sodium silicate) 150g / t-230g / t; Foaming agent (2# oil) 18g / t-60g / t;

[0026] Copper beneficiation operation adds collector (EP type ore dressing agent produced by Beijing Institute of Mining and Metallurgy) 5-10g / t ore feeding, gangue inhibitor (liquid sodium silicate) 30-50g / t ore feeding, pH value adjustment Add 30-100g / t of lime (quicklime) to the ore.

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Abstract

The invention provides an ore grinding mineral dressing process for a large molybdenum ore, and belongs to the technical field of molybdenum ore dressing. The ore grinding mineral dressing process forthe large molybdenum ore comprises the steps that raw ore is fed into a SABC closed circuit grinding and grading system; a ground product is fed into copper and molybdenum bulk flotation operation composed of operations of rapid flotation, roughing, scavenging and preconcentration, rapid flotation concentrate and preconcentrated concentrate are obtained, and the rapid flotation concentrate is directly fed into secondary concentration; the preconcentrated concentrate is fed into closed circuit fine grinding operation, a fine-ground product is fed into molybdenum and copper separating flotationoperation; and tailings after fine scavenging is densely fed into a copper flotation process composed of one time of roughing, four times of concentration and two times of scavenging to obtain a final copper concentrate. Compared with a traditional molybdenum flotation multi-stage process, the molybdenum concentration adopts a flotation column, the advantages of high beneficiation efficiency, energy saving, low running cost, convenient maintenance, simple operation, high degree of automation and the like are achieved, the beneficiation enrichment ratio is large, and the stable concentrate products can be obtained.

Description

technical field [0001] The invention relates to a large-scale molybdenum ore grinding and beneficiation process, which belongs to the molybdenum ore beneficiation technology. Background technique [0002] With the development and utilization of mineral resources, those high-grade, low-impurity mineral resources that are conducive to development gradually disappear, followed by low-grade, associated complex "poor, fine, and miscellaneous" ores; at present, my country's molybdenum Most of the molybdenum in the ore is about 0.1%, and the copper content is about 0.02%. The useful minerals are mainly molybdenite, chalcopyrite, chalcocite, and pyrite; in addition to recycling molybdenum, copper can also be comprehensively recovered; traditional molybdenum It is difficult for mines to recycle copper effectively due to the limitation of scale. With the increase of mine scale, it is possible to recycle copper and improve the comprehensive utilization rate of resources; the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 李兴武李丽修大伟刘金浪席大勇解明亮
Owner 伊春鹿鸣矿业有限公司
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