中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2014年
11期
3682-3687
,共6页
白钨矿%浮选%油酸钠%苯甲羟肟酸%粒径%组合药剂
白鎢礦%浮選%油痠鈉%苯甲羥肟痠%粒徑%組閤藥劑
백오광%부선%유산납%분갑간우산%립경%조합약제
scheelite%flotation%sodium oleate%benzohydroxamic acid%particle size%combined reagents
通过浮选试验和理论计算研究白钨矿粒度分布(粒径小于10μm的微细粒含量)对浮选的影响。结果表明，颗粒粒径对白钨矿浮选回收率以及组合药剂性能都有影响；扩展的DLVO(EDLVO)理论证明白钨矿颗粒之间存在相互吸引力。颗粒之间的相互作用能、流体剪切力大小都与颗粒粒径有关，这是小于10μm粒级白钨矿对粗粒级白钨矿回收率的影响随着粗粒级粒度的改变而发生变化的主要原因。以组合药剂为捕收剂时，白钨矿的最高回收率和组合药剂的最佳配比与颗粒粒度以及药剂性能有关，而组合药剂的最佳添加顺序与颗粒粒度无关，只与药剂性能有关。
通過浮選試驗和理論計算研究白鎢礦粒度分佈(粒徑小于10μm的微細粒含量)對浮選的影響。結果錶明，顆粒粒徑對白鎢礦浮選迴收率以及組閤藥劑性能都有影響；擴展的DLVO(EDLVO)理論證明白鎢礦顆粒之間存在相互吸引力。顆粒之間的相互作用能、流體剪切力大小都與顆粒粒徑有關，這是小于10μm粒級白鎢礦對粗粒級白鎢礦迴收率的影響隨著粗粒級粒度的改變而髮生變化的主要原因。以組閤藥劑為捕收劑時，白鎢礦的最高迴收率和組閤藥劑的最佳配比與顆粒粒度以及藥劑性能有關，而組閤藥劑的最佳添加順序與顆粒粒度無關，隻與藥劑性能有關。
통과부선시험화이론계산연구백오광립도분포(립경소우10μm적미세립함량)대부선적영향。결과표명，과립립경대백오광부선회수솔이급조합약제성능도유영향；확전적DLVO(EDLVO)이론증명백오광과립지간존재상호흡인력。과립지간적상호작용능、류체전절력대소도여과립립경유관，저시소우10μm립급백오광대조립급백오광회수솔적영향수착조립급립도적개변이발생변화적주요원인。이조합약제위포수제시，백오광적최고회수솔화조합약제적최가배비여과립립도이급약제성능유관，이조합약제적최가첨가순서여과립립도무관，지여약제성능유관。
Effects of size distribution (particle size and content of fine fraction (<10μm)) on scheelite flotation were studied using flotation tests and theoretical calculations. The results show that particle size influences the scheelite recovery and the performance of combined reagents. The scheelite recovery is lowered by adding fine particles (<10μm) into the pulp containing coarse particles. Extended DLVO (EDLVO) theory confirms that the fine fractions (<10μm) could interface with the coarse fractions. The interaction energy and fluid forces are relative to the particle size, which might explain why the fine fractions influence the scheelite flotation. The highest recovery of scheelite using combined reagents as collector and optimum ratio of combined reagents were determined by scheelite particle size and reagent performance. However, the optimum adding order was only determined by reagent performance, which has nothing to do with particle size.
