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A kind of grinding and beneficiation process of large molybdenum ore

A molybdenum ore, large-scale technology, applied in the field of grinding and beneficiation technology of large-scale molybdenum ore, can solve the problems of difficult copper recovery and other problems, and achieve the effects of fast failure, good effect and high processing capacity

Active Publication Date: 2021-09-24
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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  • A kind of grinding and beneficiation process of large molybdenum ore

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Effect test

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 a large-scale molybdenum ore grinding and beneficiation process, which belongs to the technical field of molybdenum ore beneficiation. The grinding and beneficiation process of a large-scale molybdenum ore in the present invention includes: feeding the raw ore into the SABC closed-circuit grinding and grading system; feeding the grinding products into the copper and molybdenum which are composed of rapid flotation, roughing, sweeping, and pre-selection operations. Mixed flotation operation to obtain rapid flotation concentrate and pre-selected concentrate, the rapid flotation concentrate is directly fed into the second selection; the pre-selected concentrate is fed into the closed-circuit fine grinding operation, and the finely ground products are fed into molybdenum and copper Separation flotation operation; fine sweeping tailings are densely fed into the copper flotation process consisting of first roughing, four times of beneficiation, and second scavenging to obtain the final copper concentrate. Compared with the traditional molybdenum flotation multi-stage process, the molybdenum beneficiation adopts flotation column, which has the advantages of high beneficiation efficiency, energy saving, low operating cost, convenient maintenance, simple operation, high degree of automation, etc., large beneficiation and enrichment ratio, and stable concentrate products.

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 Patents(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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