Two-product molybdenum ore beneficiation process

Abstract

The invention relates to a two-product molybdenum ore beneficiation process. The process comprises the following steps: raw ores with the particle size of 0-12 mm, the molybdenum grade of 0.1% and thecopper grade of 0.015% are fed in first-section closed circuit ore grinding classification operation consisting of a first-section ball mill and a hydrocyclone; overflowing currents of the first-section ore grinding hydrocyclone are fed in first-section molybdenum and copper mixing direct flotation operation consisting of flotation operation flows of one quickening, one roughing, one finishing and two scavenging to obtain first-section floatation concentrates; the first-section flotation concentrates are fed in second-section closed circuit ore grinding classification operation; overflowing currents of the second-section ore grinding hydrocyclone are fed in molybdenum and copper separation flotation operation consisting of separation flotation, continuous four times of finish floatation operations of molybdenum and copper flotation to obtain final molybdenum concentrates with the molybdenum grade of 54%, the molybdenum recovery rate of 85%, the copper grade of 0.09% and the yield of 0.156%; and separated underflow tailings are fed in copper flotation operation flows consisting of one roughing, three times of finishing and twice scavenging to obtain final copper concentrates with the copper grade of 18.2%, the copper recovery rate of 42% and the yield of 0.038%. Two concentrate products are obtained through one flow.

Description

technical field [0001] The invention belongs to the technical field of molybdenum ore beneficiation, in particular to a two-product ore beneficiation process of molybdenum ore. Background technique [0002] At present, some molybdenum mines are mostly associated with copper. Such as Luming Molybdenum Mine in Yichun, Heilongjiang, my country, and Aolunhua Molybdenum Mine in Chifeng, Inner Mongolia. Most of the molybdenum ore contains about 0.1% molybdenum and about 0.015% copper. The useful minerals are mainly molybdenite (M O S 2 ), chalcopyrite (CuFeS 2 ) and chalcocite (Cu 2 S). In addition to the recoverable molybdenum metal with a grade of about 0.1%, the raw ore also contains copper with a grade of 0.015%. These copper minerals, like molybdenite, are sulfide minerals and are easily mixed in molybdenum concentrate during molybdenum ore flotation. The copper grade in molybdenum concentrate can easily exceed the quality standard of 0.15% molybdenum concentrate. The...

AI Technical Summary

Problems solved by technology

These copper minerals, like molybdenite, are sulfide minerals and are easily mixed in molybdenum concentrate during molybdenum ore flotation. The copper grade in molybdenum concentrate can easily exceed the quality standard of 0.15% molybdenum concentrate. Regulations on copper content, thereby affecting the product quality and selling price of molybdenum concentrate

Most of the traditional molybdenum ore sorting does not effectively recover copper, but copper is a precious metal, and it is effectively recovered to produce high-quality copper concentrates. The grade of the ore, and will increase the economic benefits of the mine

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