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对钠长石和石英单矿物,用哈里蒙德管浮选、Zeta电位测量考查了混合的烷基二胺/磺酸盐药剂制度从石英中分离钠长石的效果,此外,还用该药剂制度进行了从希腊Stefania长石矿石中分离钠长石的实验室规模浮选试验。单矿物浮选试验结果表明,从石英中选择性浮选钠长石是可行的。当二胺的烃链长度与磺酸盐烃链长度相等时,矿物可浮性能进一步提高。由此可推测,磺酸盐以二胺-磺酸盐(1∶1)络合物形式共吸附,是使钠长石在使用混合捕收剂时可浮性提高的原因。pH2时浮选和吸附行为的差别,可归因于在这些研究中分别使用了粗粒给料和细粒给料。除静电作用外,烷基铵离子通过氢键结合到表面硅醇基上可解释在钠长石和石英上的类似的吸附行为,它们的表面在pH2时分别呈微负电性和不带电。当物料在浮选前先脱泥的情况下实现了从长石矿石中选择性浮选钠长石。
For albite and quartz mono-mineral, the effect of the mixed alkyldiamine / sulfonate reagent system on the separation of albite from quartz was examined using Harmonic tube flotation and Zeta potential measurements. In addition, the system was also used Laboratory scale flotation tests were carried out to separate albite from the Stefania feldspar ore in Greece. Single mineral flotation test results show that the selective flotation of albite from quartz is feasible. When the hydrocarbon chain length of the diamine is equal to the length of the sulfonate hydrocarbon chain, the flotability of the mineral can be further improved. From this, it is presumed that the sulfonate salt co-adsorbed in the form of a diamine-sulfonate (1: 1) complex is responsible for the buoyancy increase of albite in the use of a mixed collector. The differences in flotation and adsorption behavior at pH 2 can be attributed to the use of coarse-grained feed and fine-grained feed, respectively, in these studies. In addition to electrostatic interactions, alkylammonium ions bind to surface silanols through hydrogen bonds that explain similar adsorption behavior on albite and quartz, with surfaces that are slightly negatively charged and uncharged at pH 2, respectively. Selective flotation of albite from feldspar ores is achieved when the material is deslimed prior to flotation.