Agent for reverse flotation of iron ore and combination use method

Abstract

The invention provides an agent for reverse flotation of iron ore and a combination use method. The agent is composed of pH regulator sodium hydroxide, desorption agents, inhibitor causticity corn starch, activator calcium oxide and fatty acid collectors and is characterized in that the desorption agents are composed, by weight, of 40-42 parts of water glass, 4-6 parts of carboxymethyl cellulose and 7-9 parts of polycarboxylate. When the desorption agents are used, all raw material components are dissolved respectively according to the weight proportion and mixed, water is added, and therefore a desorption agent solution with the mass concentration of 0.04-0.06% is prepared. The desorption agents are applied to a reverse flotation process including one-time rough separation, one-time fine separation and three-time scavenging and a stage agent addition manner is adopted, so that the selective inhibition function on iron minerals by inhibitors in an original reverse flotation process is obviously enhanced, selectivity of the collectors is obviously enhanced, the tailing grade is reduced, the metal recovery rate is improved, fine-grain metal losses are reduced, emission reduction, yield increasing and efficiency increasing are achieved, the resource utilization rate is improved, and a new approach is provided for improvement of the micro-fine-particle iron ore reverse flotation technical index.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a medicament for iron ore flotation and an application method thereof. In particular, it relates to a medicament for reverse flotation of iron ore and a combined use method. Background technique [0002] my country's iron ore resources have the characteristics of "poor", "fine" and "miscellaneous", and the complex and difficult-to-select lean hematite accounts for a large proportion. In order to rationally develop and utilize iron ore resources and improve resource utilization efficiency, a large number of mineral processing Workers have carried out many explorations around the work of iron raising and impurity reduction, and have achieved fruitful results. During the Tenth Five-Year Period, a major breakthrough was made in the research on Anshan-style lean hematite beneficiation technology. The classic "stage (continuous) grinding, coarse and fine classification , re-ele...

AI Technical Summary

Problems solved by technology

Although the combined use of the four agents reduces the cost and improves the separation effect, there are still technical difficulties in the heavy metal loss of fine iron ore and the high grade of flotation tailings

This method can remove the harmful impurity sulfur in the iron concentrate while increasing iron and reducing silicon in the iron ore. However, the above-mentioned process still has insufficient iron ore inhibition, and the selectivity of the collector is not high, and the fine particle Iron ore sorting is not very targeted

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