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由于白钨矿、萤石、方解石等矿物表面的钙离子与内部晶格离子成键强度不同,因而与捕收剂或抑制剂离子的成键作用不同。但仅靠调节捕收剂辛基异羟肟酸[OHX(p)]的用量很难分离它们,必须加入调整剂。试验证明,在适宜pH下S_(808)能选择性地强烈抑制方解石、萤石。对白钨矿与方解石的混合物(含WO_332.74%)和白钨矿与萤石的混合物(含WO_331.47%),一次浮选可获得回收率分别为85.47%和90.07%,品位分别为64.25%和71.02%的精矿,其分离效率分别为70.30%和82.27%(按汉考克公式计算)。通过紫外光谱、红外光谱、光电子能谱等分别对上述单矿物的测试发现,S_(808)的吸附属于特殊吸附类型。在吸附量上,白钨矿吸附量较少,不影响浮游,而方解石、萤石则大量吸附,并且其吸附量基本不受捕收剂加入的影响,因而被强烈抑制。
As scheelite, fluorite, calcite and other minerals on the surface of the calcium ion and the internal lattice ion bonding strength is different, and collectors or inhibitor ion bonding role is different. However, it is difficult to separate them only by adjusting the amount of octylhydroxamate [OHX (p)], which must be added. Experiments show that S_ (808) can strongly inhibit calcite and fluorite selectively at proper pH. The recoveries of scheelite and calcite (containing WO_332.74%) and scheelite and fluorite (containing WO_331.47%) were 85.47% % And 71.02% of the concentrate, the separation efficiency of 70.30% and 82.27% (calculated according to Hancock formula). Through the UV spectroscopy, infrared spectroscopy, photoelectron spectroscopy, respectively, the above single mineral test found that S_ (808) adsorption belongs to a special type of adsorption. In the amount of adsorption, scheelite adsorption less, does not affect the planktonic, calcite, fluorite is a large number of adsorption, and its adsorption amount is basically not affected by the collector, it was strongly inhibited.