Influência da calcinação sobre a remoção de ferro da caulinita e ilita e seus efeitos sobre a acidez

Química Nova

Cleber S. De Araújo¹  Lindomar R. Damasceno Da Silva¹ 

[1] ,Universidade Federal do Ceará Departamento de Química Orgânica e Inorgânica Fortaleza CE

关键词: calcination;    iron extraction;    lixiviation acid;    sodium citrate;   

DOI  :  10.1590/S0100-40422003000200003

来源: SciELO

【 摘 要 】

Samples of natural clay composed by kaolinite, illite, goethite and quartz, were calcinated and submitted to lixiviation with citrate and chloridric acid in order to remove iron. Investigation due to extraction consequences was carried cut by analyzing its acid properties using ammonia gas as probe in infrared spectrophotometry analysis. The sample that were treated with citrate followed by acid lixiviation yield materials twice more acid than samples treated with acid only.

【 授权许可】

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