CAJ | 학술논문

通过现场浮选产品特性分析、人工混合矿浮选试验及显微动态吸附量测定，并借助于SEM及EDS等分析手段，系统研究了微细粒级赤铁矿恶化反浮选指标、造成浮选尾矿铁品位偏高的机制。现场浮选产品特性分析结果表明，浮选尾矿-0．010mm粒级的产率为23．11％、铁矿物的单体解离度为80．43％，金属分布率达31．08％，是导致浮选尾矿品位偏高的主要部分。-0．010mm粒级赤铁矿与不同粒度、不同质量分数石英的人工混合矿浮选试验结果表明，当-0．010mm赤铁矿质量分数为40％时，赤铁矿粒度对浮选指标恶化影响最小。显微动态吸附量测定结果表明，当赤铁矿与石英粒度相近、含量相差很大，或者两者粒度相差很大、赤铁矿含量为40％时，赤铁矿与石英间的吸附较小，对反浮选的影响较小。
통과현장부선산품특성분석、인공혼합광부선시험급현미동태흡부량측정，병차조우SEM급EDS등분석수단，계통연구료미세립급적철광악화반부선지표、조성부선미광철품위편고적궤제。현장부선산품특성분석결과표명，부선미광-0．010mm립급적산솔위23．11％、철광물적단체해리도위80．43％，금속분포솔체31．08％，시도치부선미광품위편고적주요부분。-0．010mm립급적철광여불동립도、불동질량분수석영적인공혼합광부선시험결과표명，당-0．010mm적철광질량분수위40％시，적철광립도대부선지표악화영향최소。현미동태흡부량측정결과표명，당적철광여석영립도상근、함량상차흔대，혹자량자립도상차흔대、적철광함량위40％시，적철광여석영간적흡부교소，대반부선적영향교소。
The reasons of ultrafine hematite worsen reverse indices leading to higher grade of flotation tailing were investigated via characteristics research of in-situ flotation product ,flotation tests of mixed ores and micro adsorption percent determination ,as well as SEM and EDS .It was shown that the main parts resulting in higher grade of tailing was -0 .010mm with yield of 23 .11% ,iron minerals dissociation degree of 80 .43% and metal distribution up to 31 .08% .Mixed minerals flotation results indicated that hematite size worsen reverse flotation indices most slightly when the content of -0 .010mm hematite was 40% . Micro adsorption tests showed that adsorption between hematite and quartz occurred with smaller probability when hematite sizes were near to that of quartz and the content of hematite and quartz was different notably ,or both sizes of hematite and quartz were similar and hematite content was 40% .