Adsorção de xantatos sobre pirita

Química Nova

Fábio Garcia Penha¹  Vivian Cristina Spier¹  Nito Angelo Debacher¹ 

[1] ,Universidade Federal de Santa Catarina Departamento de Química Florianópolis SC

关键词: pyrite;    adsorption;    contact angle;   

DOI  :  10.1590/S0100-40422001000500007

来源: SciELO

【 摘 要 】

This paper presents a study of adsorption of xanthate with alkyl chain of two (C2XK), four (C4XK) and eight (C8XK) atoms of carbon, on pyrite from Santa Catarina, Brazil. The results showed that pyrite surface changes from hydrophilic to hydrophobic when xanthate is adsorbed increasing the contact angle to 35º for C2XK, and to 90º for C4XK and C8XK. The rate of flotation of pyrite particles after adsorption increases with the increase of the number of carbon atoms in the alkyl chain in agreement with the results of contact angle measurements.

【 授权许可】

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