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含钠长石 (钠长石 )和含钾长石 (微斜长石 )是晶体结构和物理化学性质相近的主要长石矿物。浮选似乎是分离这些长石的唯一方法。在一价盐存在时胺 -长石体系理论研究结果表明 ,在中性 pH范围 ,某一浓度的一价盐可以浮选分离钠长石和钾长石。在本研究中 ,在HF介质中有盐存在时浮选分离长石所需要的胺浓度比中性 pH时的胺浓度要高。根据钠长石和钾长石所带电荷的不同提出了浮选它们的机理 ,即在钠长石和微斜长石表面上产生电荷 ,使捕收剂胺吸附在这些矿物表面上
Sodium feldspar (albite) and potassium feldspar (plagioclase) are the major feldspar minerals with similar crystal structure and physicochemical properties. Flotation seems to be the only way to separate these feldspars. Amine-feldspar system theoretical studies in the presence of monovalent salts show that at a certain concentration of monovalent salts, feldspar can be used to separate albite and potash feldspar in the neutral pH range. In the present study, flotation of feldspar requires a higher concentration of amine than a neutral pH when salts are present in the HF medium. The mechanism by which flotation is based on the charge carried by the albite and the potassium feldspar suggests that charges are generated on the surfaces of the albite and the plagioclase, allowing the collector amine to adsorb on these mineral surfaces