Experimental Study on Magnetic Separation and Re-enrichment of a Lepidolite Rough Concentrate
The rough concentrate lithium grade of a lithium mica in Jiangxi is about 2.60%after flota-tion,and the product competitiveness is weak.In order to improve the market competitiveness of the lepido-lite concentrate and achieve the requirements of more than 3.0%lithium grade,the magnetic separation and re-enrichment test of lepidolite rough concentrate was carried out.The results show that under the condi-tions of grinding fineness of-0.074 mm 65%,feed concentration of 25%,magnetic medium rod diameter of 3 mm,background magnetic induction intensity of 1.3 T in high intensity magnetic roughing 1 and back-ground magnetic induction intensity of 1.5 T in high intensity magnetic roughing 2,lepidolite concentrate with lithium grade of 3.03%and lithium recovery of 82.03%can be obtained by two times of high intensity magnetic roughing process.The test has achieved the effect of re-enrichment of on-site flotation concen-trate,which can be used as the basis for on-site process transformation.
lepidolitehigh gradient magnetic separationre-enrichment
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