Phosphate rock floating process

Abstract

The phosphate rock floating process is one phosphate rock grading forward-backward floating process, in which the raw ore pulp is first separated into two parts of different fineness and then forward-backward floated in two separated branches. The coarse ore pulp is made to separated in high concentration so as to save floating chemical; while the fine ore pulp is floated through adding dispersant to raise the floating efficiency. The grading floating process can avoid the mutual interference between coarse and fine grains, and thus has raised separating efficiency, raised floated concentrate quality, lowered floating chemical consumption and raised technological and economic indexes.

Description

technical field

[0001] The invention relates to a phosphate rock flotation process. Background technique

[0002] Flotation is one of the main methods of phosphate ore beneficiation. Due to the difference in phosphate rock geological origin, impurity type and content, phosphate rock flotation can have a variety of processes, such as the commonly used single forward flotation process, single reverse flotation process, forward-reverse flotation process, reverse-positive Flotation process, double reverse flotation process, etc. [1-7] .

[0003] Si-calcium phosphate rock occupies a dominant position in my country's phosphate rock resources, and its flotation process mainly includes ① (phosphorus mineral) single forward flotation process, ② (silicon or magnesium) single reverse flotation process, ③ forward-reverse Flotation process, ④ reverse-positive flotation process, ⑤ double reverse flotation process, etc. [1-7] . In phosphate rock flotation, the particle size and distrib...

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