材料期刊网

多年工业生产证明“碱法不脱泥锂辉石浮选流程”工艺简单,给矿含Li_2O1.2-1.3％,精矿品位6.0-6.1％,回收率达88-90％。为分离泡沫中的绿柱石与锂辉石,曾研究过热裂(1050℃)-筛选、焙烧(600℃)-浮选、热煮(850℃)-浮选和常温浮选等多种方法,均获得较好指标。采用FeCl_3和水玻璃混合剂与Na_2S,Na_2CO_3,氧化石蜡皂在常温下能使绿柱石保持足够的可浮性,而锂辉石成为槽内产品,使之有效分离。由此制定的绿柱石-锂辉石混合浮选分离流程,为Be,Li浮选混合泡沫的综合回收提供一新的途径。

The flowsheet to float spodumene in alkaline medium without desliming has long since been borne out by its simplicity, low cost and easy supply of reagents. It was ensured in industrial practice that the spodumene concentrate with a grade of 6.0-6.1% Li_2O and recovery of 88-90% may be produced from ore containing 1.2-1.3% Li_2O. Several trials have been made to troubleshoot for separation of spodumene from the froth together with beryl such as:1050℃ decrepitating-sizing;600℃ roasting-flotation;85℃ digesting-flotation as well as flotation at room tem-perature. Among these the satisfactory results were obtained, and some of them were brought into operation in mills. Especially, the separation of beryl from spod-umene by flotation with“mixed reagent”(FeCl_3+Na_3SiO_3)add edto Na_2CO_3, Na_2S, oxidized paraffin soap at room temperature was a great success. Hence, the flowsheet of cleaning separation and bulk flotation of beryl-spodumene is developed providing a new way for recovery and separation of oughing froth containing these two minerals.