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应用电动测量和微浮选法研究了在有和没有碳酸盐组分存在时阴离子捕收剂十二烷基硫酸钠对天青石的浮选。用电动测量、矿物溶解测定、红外光谱和矿物 /溶液平衡法研究了在碳酸盐水溶液中 ,天青石表面向碳酸锶的转变过程。在pH 3～ 11范围内 ,在没有碳酸盐的溶液中 ,十二烷基硫酸盐由于在天青石表面上化学吸附而有效地浮选天青石 ,此时它在天青石表面上形成了十二烷基硫酸锶。在 pH 7 8处 ,可溶的碳酸盐组分使天青石表面开始向碳酸锶转变 ,但此时不影响天青石的浮选。只在 pH高于 10时天青石浮选受到抑制 ,这是由于CO2 - 3 和HCO- 3 组分在天青石表面上特效吸附 ,阻止十二烷基硫酸盐在碳酸盐化的天青石表面上吸附。
The electrocatalysis and micro flotation methods were used to study the flotation of celestite by anionic sodium dodecyl sulfate in the presence and absence of carbonate components. The conversion of celestite to strontium carbonate in carbonate aqueous solution was studied by means of electrokinetic measurement, mineral dissolution measurement, infrared spectroscopy and mineral / solution balance method. In the carbonate-free solution, lauryl sulfate flotates celestite effectively due to chemisorption on the surface of celestite at pH 3-11, when it forms ten Strontium dialkyl sulfate. At pH 7.8, the soluble carbonate component started the transformation of the celestite surface towards strontium carbonate, but did not affect the flotation of celestite at this time. The flotation of celestite was inhibited only at pH above 10 due to the specific adsorption of CO2 - 3 and HCO - 3 components on the surface of celestite, preventing precipitation of lauryl sulfate on the surface of the cemented lapisite Adsorption.