Novel inhibitor for aluminosilicate minerals and method of use thereof

Abstract

The invention discloses a novel inhibitor for aluminosilicate minerals and a use method of the novel inhibitor. The novel inhibitor is organic composite phosphate mainly composed of amino trimethylene potassium phosphate of the small molecular weight or amino trimethylene sodium phosphate of the small molecular weight. The use method of the novel inhibitor includes the steps that when positive flotation is conducted on bauxite, the granualarity property of a bauxite grinding product with the alumina-silica ratio ranging from 3 to 5 is -0.074 mm, and the size fraction accounts for 80% to 90%; and the pH value of a flotation system is controlled from 9 to 11, sodium oleate serves as a collecting agent, and the use amount ranges from 500 g / t to 1200 g / t. The use amount of the inhibitor ranges from 60 g / t to 70 g / t. The novel inhibitor is applied to the bauxite positive-flotation desilicication process, the selective inhibition effect on minerals containing silicon can be enhanced, meanwhile the capacity of eliminating unavoidable ions such as Ca2+ and Mg2+ can be enhanced, and the effect of positive flotation of the bauxite is improved.

Description

technical field [0001] The invention relates to the field of mineral processing engineering, in particular to a novel inhibitor of aluminosilicate minerals and a method for using the same, and 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 succe...

AI Technical Summary

Problems solved by technology

But the main shortcoming of these inhibitors 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, inhibitors such as sodium hexametaphosphate eliminate the unavoidable ions in the pulp through complexation, often need to consume a large amount of sodium hexametaphosphate, and the effect is also general, resulting in general positive flotation effect

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