Method for reducing emission by reverse flotation reagent for carnallite mine

Abstract

The invention relates to the field of mineral flotation. A method for reducing emission by a reverse flotation reagent for a carnallite mine is characterized by comprising the following main steps that (1) a foam sodium chloride solution washing and filtering technology is added after reverse flotation operation, filtered filtrate containing medicament returns to a carnallite slurry thickener workshop section; (2) after the reverse flotation operation, the low sodium carnallite slurry is filtered in vacuum and the filtrate containing the medicament returns to the carnallite slurry thickener workshop section as well; and (3) the filtrate containing the medicament continuously returns to the carnallite slurry thickener workshop section for recycling, and finally, ore-forming mother liquor which does not contain the medicament returns to a salt pan. Combined the process characteristics of an original technology, the method adopts a process optimization method and adds a recycling technology of mother liquor containing medicament to replace the ore-forming mother liquor, the aims of reducing the emission by the reverse flotation reagent and reducing the environmental impact are achieved, and meanwhile, fine control of a flotation operation separating index can be realized.

Description

technical field [0001] The invention relates to the field of mineral flotation, in particular to a method for reducing discharge of potassium chloride reverse flotation agents. Background technique [0002] As we all know, mineral processing generally uses collectors, foaming agents, auxiliary agents, etc. to carry out bubbling flotation separation to achieve the purpose of enriching useful minerals. Flotation separation methods include forward flotation, reverse flotation and combination of forward and reverse flotation. This method has the characteristics of simplicity, economy, and easy scale-up, but there are also problems such as the flotation medium or mother liquor contains a large amount of surfactant, and it is difficult to separate, recover, and degrade. With the continuous development of economy and society, this kind of problem has become prominent, and it is an environmental protection problem that needs to be solved urgently in front of mineral processing ente...

AI Technical Summary

Problems solved by technology

[0005] The invention aims at the characteristics of dodecylmorpholine refractory degradation, large amount of mother liquor and low content (ppm level), poor separation and recovery technology and economic efficiency, combined with the reverse flotation-cold crystallization process characteristics of carnallite ore to produce potassium chloride , using the process optimization method to achieve the purpose of reducing emissions, solving environmental impacts, and realizing fine control of flotation operation selection indicators, etc., providing a method for reducing emissions of reverse flotation agents for carnallite mines

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