Regulator for bauxite forward flotation and application method of regulator

Abstract

The invention discloses a regulator for bauxite forward flotation and an application method of the regulator. The regulator is one kind of modified phosphate and mainly comprises 1-hydroxy ethylidene-1,1-diphosphonic acid potassium or 1-hydroxy ethylidene-1,1-diphosphonic acid sodium. The application method comprises the steps that when bauxite forward flotation is carried out, for bauxite with the alumina-silica ratio of 3:5, the granularity property of ore grinding products is -0.074 mm, the granulometric class is 80%-90%, the pH value of a flotation system is controlled to be 9-11, sodium oleate is adopted as a collecting agent, the use amount is 500-1,200 g / t, and the use amount of the regulator is 60-70 g / t. The regulator is applied to a bauxite forward flotation and desilicication technology, and the selective inhibition function on silicon containing ore can be enhanced; and meanwhile the elimination capacity on unavoidable ions (such as Ca2+ and Mg2+) is improved, and the effect of bauxite forward flotation is improved.

Description

technical field [0001] The invention relates to the field of mineral processing engineering, in particular to a regulator for positive flotation of bauxite and a using method thereof, which belongs to resource comprehensive utilization engineering. Background technique [0002] Most of the bauxite resources in my country belong to diaspore type bauxite, among which the proportion of high-quality bauxite with aluminum-silicon ratio greater than 7 is very small, and more than 80% of the diaspore-type bauxite with aluminum-silicon ratio is less than 7, and the bauxite with an aluminum-silicon ratio of 3-5 accounts for the vast majority. This part of resources must be desiliconized, enriched and upgraded through mineral processing methods, so that the aluminum-silicon ratio is greater than 7, so as to meet the minimum requirements of the lime-Bayer process. Flotation is the main method of beneficiation and desiliconization, and positive flotation is undoubtedly the most successf...

AI Technical Summary

Problems solved by technology

But the main shortcoming of these regulators is: consumption is bigger, also has inhibitory effect to diaspore, especially under the condition of large dosage, often to the inhibition of diaspore stronger, thereby causes the decline of Al2O3 recovery rate At the same time, the elimination of unavoidable ions in the pulp by sodium hexametaphosphate and other regulators is done through complexation, which often requires the consumption of a large amount of sodium hexametaphosphate, and the effect is also average, resulting in a general positive flotation effect

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