Mineral separation process of high-carbon molybdenum-nickel ore

A beneficiation method and carbon-nickel-molybdenum technology, applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of small recovery rate, increase and decrease of flotation recovery rate, etc. The effect of large consumption and lower production cost

Inactive Publication Date: 2009-07-15
HUNAN RES INST FOR NONFERROUS METALS
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Problems solved by technology

Within a certain range of collector concentration, as the concentration of the agent increases, the adsorption capacity increases, and the flotation recovery rate increases significantly; when the concentration reaches a certain value, the recovery rate decreases with the increase in concentration and adsorption capacity; When the concentration is too high, the adsorption capacity can continue to increase, but the flotation recovery rate no longer increases, or even decreases.

Method used

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  • Mineral separation process of high-carbon molybdenum-nickel ore
  • Mineral separation process of high-carbon molybdenum-nickel ore
  • Mineral separation process of high-carbon molybdenum-nickel ore

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Embodiment

[0022] The nickel-molybdenum ore bulk raw ore is roughly crushed, divided into three grades of 3-8mm, 8-20mm, and 20-30mm, and then undergoes jigging gravity separation respectively. Table 1 shows the results of grading and jigging for the three particle sizes.

[0023] Table 1 Results of graded jigging (%)

[0024]

[0025]

[0026] The combined yield of jigging concentrate and middle ore is 45.91%, molybdenum grade is 0.28%, recovery rate is 73.07%; nickel grade is 0.23%, recovery rate is 80.37%. The yield of jigging tailings is 54.09%, the molybdenum grade is 0.095%, the recovery rate is 26.93%; the nickel grade is 0.065%, the recovery rate is 19.63%.

[0027] Gravity-selected concentrate, medium ore and -3mm raw ore are combined and ground by a ball mill to a fineness of 84.6%-200 mesh. The high-carbon nickel-molybdenum ore contains 40% carbon, which is decarbonized by flotation. Na 2 SiO 3 As an inhibitor of gangue minerals, kerosene and 2 # The oil is used as...

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Abstract

The invention provides a beneficiation method for a high-carbon molybdenum nickel ore, which adopts floatation decarbonization so as to eliminate the influence of high-content carbon substances on subsequent nickel floatation. Furthermore, the beneficiation process adopts sieve classification with jigging and tail throwing so as to enhance the floatation and selected grade, then rough concentrates are selected again and treated by floatation after being ground, and the ore concentrates are selected again with tail throwing to enhance the floatation and selected grade without ore grinding. The invention can greatly reduce the floatation quantity, has good beneficiation index and provides a new way for developing a low-grade high-carbon molybdenum nickel ore.

Description

technical field [0001] The invention relates to the field of ore dressing, in particular to a method for beneficiating high-carbon molybdenum-nickel ore. Background technique [0002] With the rapid development of global economic integration, the national economy's demand for non-ferrous metals is increasing day by day. Molybdenum, nickel, and vanadium are important means of production in industrial production and people's lives, and are also important strategic resources and military raw materials. Due to the rapid development of modern metallurgy, electronics, aerospace, chemical and other industries, nickel-molybdenum and molybdenum-nickel fuel cells are more and more widely used in human activities. The annual demand for molybdenum and nickel in the world is about 180,000 tons, and there is not only a huge gap , and the demand has grown rapidly. The international market price of molybdenum rose from 100,000 yuan / ton before 2004 to 600,000 yuan / ton in 2007 and stabilized ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00B03B1/04B03D1/004B03D1/002B03D101/02B03D101/06
Inventor 陈代雄杨建文刘锡贵罗新明
Owner HUNAN RES INST FOR NONFERROUS METALS
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