A kind of phosphate rock reverse flotation desilication aluminum collector and its preparation method and application

Abstract

The present invention relates to a phosphate rock reverse flotation desilication aluminum collector and its preparation method and application, the collector comprises: mixed amine, mixed alcohol and methyl cocoate; the phosphate rock reverse flotation provided in the present invention The silicon-aluminum collector has the advantages of good flotation performance, low temperature resistance, moderate reagent cost, and a wide pH range (between 5-10) for flotation; at the same time, there are also minerals when using the collector for flotation. It has the advantages of brittle foam and good fluidity. In the reverse flotation operation, the collector only needs to be used for desilication and aluminum removal, so that the types of flotation reagents are reduced. Obviously, it is less difficult to reuse all the backwater.

Description

technical field [0001] The present invention relates to the field of phosphate rock flotation, and relates to a phosphate rock reverse flotation silicon-aluminum collector and its preparation method and application, especially to a medium and low-grade phosphorus rock reverse flotation removal of silicon-containing minerals and Collector for aluminous gangue and its preparation method and use. Background technique [0002] 70% of my country's phosphate rock resources belong to sedimentary rock-type phosphorites, which are mainly distributed in Yunnan, Guizhou, Sichuan, Hunan and Hubei. With the mining of easy-to-select medium-high-grade magnesia phosphorites, the medium-low-grade silicon-calcium is twice as high Oxide phosphorite must also be developed and utilized. Aiming at this low-grade and refractory colloidal phosphate resource, the currently developed beneficiation processes mainly include direct-reverse flotation, double-reverse flotation, gravity separation-coarse a...

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Problems solved by technology

Aiming at this low-grade and refractory colloidal phosphate resource, the currently developed beneficiation processes mainly include direct-reverse flotation, double-reverse flotation, gravity separation-coarse and fine-grained separation-coarse double-reverse flotation-fine-grained positive -Reverse flotation, desliming-direct-reverse flotation and reverse-direct flotation and other processes, among which the most likely to be industrialized is the forward-reverse process, but due to problems such as high beneficiation costs, many types of chemicals, and difficult utilization of backwater Make it difficult for companies to choose

Theoretically speaking, double reverse flotation is the most suitable beneficiation process for low- and medium-grade collophanite, but due to the lack of a kind of flotation performance, low reagent cost, good natural defoaming performance and fluidity of mineralized foam Better reverse flotation desilication aluminum collector but difficult to industrialize

Although the reverse flotation collector mentioned in CN103286007A can also realize the ore of phosphorus concentrate, it limits its utilization range for the phosphorus concentrate after demagnesification

Another example is a kind of phosphate rock amphoteric collector proposed in CN104888968A, which needs to add various reagents such as sulfuric acid, lemonade and water glass in the flotation process.

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