Low-grade bauxite positive floatation collecting agent and preparing method thereof

Abstract

The invention relates to a low-grade bauxite positive floatation collecting agent. The collecting agent comprises, by weight, 5-25 parts of gutter oil treating fluid, 65-85 parts of high-iodine fatty acid, 5-8 parts of sodium hydroxide, 0.5-1 part of an MOA emulgator in a mixed preparation manner; and the gutter oil treating fluid is prepared from gutter oil, methyl alcohol or ethyl alcohol, hydroxylammonium chloride and an alkaline solution according to the weight ratio being 5:1:2:1. According to the low-grade bauxite positive floatation collecting agent, the gutter oil is made profitable; pretreatment modification is carried out on the gutter oil, the gutter oil and other agents are compounded to obtain the novel collecting agent, a series of problems such as large agent using amount, difficult foam transportation, poor beneficiation and separation indexes and high cost are solved to a large extent, efficient resource utilization, energy saving, emission reduction, cost reduction and efficiency increasing are facilitated, and the low-grade bauxite positive floatation collecting agent is of great significance in improving comprehensive competitive power of bauxite dressing plants.

Description

technical field [0001] The invention relates to the field of ore dressing and flotation agents, in particular to a low-grade bauxite positive flotation collector and a preparation method thereof. Background technique [0002] At present, the fatty acid collectors currently used in bauxite beneficiation have poor selectivity, large dosage, and unsatisfactory separation indicators; large amount of foam, difficult defoaming, serious inclusions and other shortcomings lead to a large amount of washing water in the foam tank, low concentration in the production system, and production. The processing capacity is low; in addition, the excessive foam volume often causes the phenomenon of sinking in the production, the production intensity is high, the environment is poor, and it also causes the waste of the concentrate; a large amount of foam that is difficult to eliminate will float up with solid particles in the subsequent settlement process, which is easy to This leads to problems...

AI Technical Summary

Problems solved by technology

[0002] At present, the fatty acid collectors currently used in bauxite beneficiation have poor selectivity, large dosage, and unsatisfactory separation indicators; large amount of foam, difficult defoaming, serious inclusions and other shortcomings lead to a large amount of washing water in the foam tank, low concentration in the production system, and production. The processing capacity is low; in addition, the excessive foam volume often causes the phenomenon of sinking in the production, the production intensity is high, the environment is poor, and it also causes the waste of the concentrate; a large amount of foam that is difficult to eliminate will float up with solid particles in the subsequent settlement process, which is easy to This leads to problems such as high solid content of circulating water, difficult treatment of circulating water, and reduced utilization rate.

Due to the lack of targeted reagents, the biggest problem currently faced by ore concentrators is the high A / S of tailings, which leads to a decrease in the recovery rate of alumina in concentrates, which in turn increases the ore consumption in the alumina industrial production, resulting in resource consumption. increase, the production cost rises, therefore, the development of a low-grade refractory bauxite positive flotation collector and its preparation method is of great significance to flotation desiliconization