Beneficiation method for producing low-phosphorous molybdenum concentrate by utilizing ultrasonic waves

Abstract

The invention discloses a beneficiation method for producing low-phosphorous molybdenum concentrate by utilizing ultrasonic waves. The beneficiation method comprises the following steps: (1) carrying out ultrasonic treatment: carrying out ultrasonic dispersing and cleaning on medium-grade and high-grade high-phosphorous molybdenum concentrate obtained by flotation for 3-20 minutes at ultrasonic frequency of 28-80KHz and ultrasonic strength of 200-400W, simultaneously adding a phosphate mineral inhibitor with amount of 1500-7000g / t to carry out dispersion inhibition on phosphor-containing minerals; (2) carrying out primary flotation; (3) carrying out flotation scavenging; and (4) carrying out flotation concentration. According to the beneficiation method, by utilizing ultrasonic means and adding the efficient phosphor inhibitor, phosphor content in a molybdenum concentrate product generated by flotation is reduced to be below the standard, so that qualified low-phosphorous molybdenum concentrate is obtained. According to the method, a chemical phosphorus removal process of a beneficiation plant is cancelled, production cost and generation of waste liquor are reduced, and economic benefits and environmental benefits are remarkable.

Description

technical field [0001] The present invention relates to the technical field of new dephosphorization flotation technology for medium and high-grade molybdenum concentrates with relatively high phosphorus content, in particular to a beneficiation method for producing low-phosphorus molybdenum concentrates. The medium and high-grade molybdenum concentrates produced by ultrasonic pretreatment are dephosphorized by mineral processing to produce low-phosphorus qualified molybdenum concentrates. Background technique [0002] my country is very rich in molybdenum ore resources. As of the end of 2014, the resource reserves reached 28.26 million tons, which is one of the six dominant mineral resources in my country. The available molybdenum ore resources tend to be poor, fine and miscellaneous. Harmful impurities called interstitial elements such as S, P, and Si in ore resources are embedded with fine particles of molybdenum sulfide minerals, resulting in difficult separation of ore ...

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Problems solved by technology

[0006] In the existing technology represented by the above-mentioned patent documents, since polar oil collectors are usually used for flotation in the molybdenum beneficiation process, it is easy to cause oil agglomeration of molybdenum sulfide minerals, so that some fine-grained phosphorus-containing minerals are wrapped In the agglomeration of molybdenum sulfide minerals, resulting in high phosphorus content in mineral processing products

For flotation molybdenum concentrates with excessive phosphorus content, concentrators usually use them together with molybdenum concentrates with low phosphorus content, or use chemical beneficiation process to dephosphorize to reduce the phosphorus content in the product, that is, add special Phosphorus removal chemicals are wet leached at about 110°C to obtain molybdenum concentrate products with qualified phosphorus content, but this process consumes a lot of acid and costs a lot, and will produce toxic and harmful leaching waste that needs to be treated. At the same time, the soluble metal minerals will be dissolved and lost together with the immersion solution

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