矿产保护与利用
礦產保護與利用
광산보호여이용
Conservation and Utilization of Mineral Resources
2015年
5期
34-37
,共4页
伟晶岩%晶质铀矿%尼尔森选矿%重选
偉晶巖%晶質鈾礦%尼爾森選礦%重選
위정암%정질유광%니이삼선광%중선
pegmatite%uraninite%Knelson concentrator%gravity concentration
某晶质铀矿粒度适中、性脆易磨,尤其是磨矿后晶质铀矿部分泥化严重,针对其特点采用不同重选工艺进行对比. 试验结果表明,-0 .074 mm含量为33%时,采用螺旋选矿—摇床—尼尔森联合重选工艺,可获得铀品位2 .52%、回收率91 .88%的铀精矿. 此方案工艺简单、操作简便、回收率高,可实现尼尔森选矿机在细粒晶质铀矿选别上的应用.
某晶質鈾礦粒度適中、性脆易磨,尤其是磨礦後晶質鈾礦部分泥化嚴重,針對其特點採用不同重選工藝進行對比. 試驗結果錶明,-0 .074 mm含量為33%時,採用螺鏇選礦—搖床—尼爾森聯閤重選工藝,可穫得鈾品位2 .52%、迴收率91 .88%的鈾精礦. 此方案工藝簡單、操作簡便、迴收率高,可實現尼爾森選礦機在細粒晶質鈾礦選彆上的應用.
모정질유광립도괄중、성취역마,우기시마광후정질유광부분니화엄중,침대기특점채용불동중선공예진행대비. 시험결과표명,-0 .074 mm함량위33%시,채용라선선광—요상—니이삼연합중선공예,가획득유품위2 .52%、회수솔91 .88%적유정광. 차방안공예간단、조작간편、회수솔고,가실현니이삼선광궤재세립정질유광선별상적응용.
This article compared different gravity concentration processes of a finely grained and brittle uraninite ore , which is easily to be grinded to slime .The test result showed that utilization of spiral-shaker-nelson dressing process could obtain the uranium concentrate , the grade and re-covery of it were 2.52%and 91.88%, when the proportion of -0.074 mm fractions was 33%. This process was simple and easily operated to achieve high recovery , could promote the utilization of Knelson concentrator in uraninite dressing .
