The influence of the impurities on the flotation behaviors of synthetic ZnS

The influence of the impurities on the flotation behaviors of synthetic ZnS
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杂质对合成ZnS浮选行为的影响

DOI:
10.1016/j.mineng.2012.01.001
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发表时间:
2012-02
影响因子:
4.8
通讯作者:
Meijing Yang
Meijing Yang
中科院分区:
工程技术2区
文献类型:
--
作者:
Lihong Lan;Ye Chen;Jianhua Chen;Meijing Yang

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为了研究铁、铜、镉三种典型杂质对闪锌矿浮选行为的影响,采用共沉淀法合成了掺杂ZnS。在不加CuSO4的条件下,Cd、Cu杂质大大提高了ZnS的回收率,而Fe杂质则明显降低了ZnS的可浮性。光谱结果表明,在Cu和Cd掺杂的ZnS表面上观察到了双黄原酸盐和金属黄原酸盐,而在Fe掺杂的ZnS表面上观察到了金属黄原酸盐。黄药吸附实验表明,Cd、Cu杂质有利于黄药的吸附,而Fe杂质则降低了黄药的吸附。在CuSO_4存在下,Cd杂质不仅大大提高了ZnS的回收率,而且增强了黄药的吸附。铜杂质对硫化锌的浮选有促进作用,但对黄药的吸附影响不大。铁杂质对ZnS浮选和黄药吸附均有明显的抑制作用。
To investigate the effect of three typical impurities (iron, copper and cadmium) on the flotation behavior of sphalerite, we have synthesized impurity-doped ZnS using a coprecipitation method. In the absence of CuSO4, the flotation tests show that Cd and Cu impurities greatly improve the recovery of ZnS, while Fe impurities apparently decrease the floatability of ZnS. The spectral results show that both dixanthogen and the metal xanthate are observed on Cu- and Cd-doped ZnS surfaces, but only metal xanthate is observed on Fe-doped ZnS surface. Xanthate adsorption tests show that Cd and Cu impurities favor xanthate adsorption, while Fe impurities decrease the adsorption of xanthate. In the presence of CuSO4, Cd impurities not only greatly improve the recovery of ZnS but also enhance the adsorption of xanthate. Cu impurities can improve the flotation of ZnS but show little influence on xanthate adsorption. Fe impurities apparently decrease both ZnS flotation and xanthate adsorption.
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