Comprehensive mineral processing technology for spodumene with high amblygonite content

Abstract

The present invention relates to the technical field of mineral processing, in particular to a comprehensive mineral processing technology for spodumene with high amblygonite content, including the following steps: crushing, grinding and classifying spodumene with high amblygonite content to obtain ore pulp, then performing impurity removal and desliming; conditioning the deslimed ore pulp and subjecting it to amblygonite flotation to obtain amblygonite concentrate; combining the amblygonite tailings with the removed fine slime and feeding the mixture to a first thickener for dewatering, and purifying the overflow of the first thickener to be used as the first-stage backwater for return to grinding and amblygonite flotation; conditioning the underflow of the first thickener and subjecting it to spodumene flotation to obtain spodumene flotation concentrate; feeding the spodumene flotation concentrate to magnetic separation for iron removal, then washing with dilute acid to obtain spodumene concentrate and magnetic substances; combining the spodumene flotation tailings with the magnetic substances and feeding the mixture to a second thickener, and purifying the overflow of the second thickener to be used as the second-stage backwater for return to spodumene flotation. By adopting the “amblygonite first, then spodumene” - flotation-magnetic separation combined process, the present invention realizes the comprehensive recovery and utilization of spodumene and amblygonite.