Collecting agent for phosphorite reverse flotation calcite

Abstract

The invention discloses a collecting agent for phosphorite reverse flotation calcite, the collecting agent is composed of the components in following mass percent: 40-80% of fatty acid polyoxyethylene ester salt, 14-50% of alkyl polyoxyethylene ether phosphate monoester salt, 5-20% of fatty alcohol polyoxyethylene ether and 1-20% of span 20. The collecting agent is suitable for phosphorite reverse flotation calcite. Compared with the fatty acid collecting agent, the collecting agent has strong collecting capability and high selectivity; compared with the alpha-amido aryl phosphoric acid collecting agent, the price is low, the dosage is little, and the material is convenient. The collecting agent overcomes the defects of processing calcite in phosphorite by conventional flotation processing method that the collecting capability is poor, the recovery rate is low and the medicine cost is high. The collecting agent has obvious superiority on indicators in beneficiation and has new breakthrough.

Description

technical field

[0001] The invention belongs to the field of phosphate rock flotation, in particular to a highly selective collector for reverse flotation of calcite in phosphate rock. Background technique

[0002] At present, most of the phosphorous concentrate powder is obtained through ore dressing. The purpose of beneficiation is to remove gangue minerals in phosphate rock. In the flotation of apatite, siliceous minerals and carbonate minerals are the most common gangue components. Silicon-containing minerals are mainly quartz or cristobalite, clay minerals and others such as feldspar and mica. Clay minerals are mostly removed by scrubbing, desliming and other methods in the beneficiation of phosphate rock; quartz, chalcedony, etc. also show poorer floatability than apatite in flotation, even if the embedded particle size is fine, generally It is still better to be selected under the circumstances, and can be removed by positive flotation. The carbonate gangues are m...

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