Chemical bleaching of the Brazilian kaolin: the effect of the pulp eletrochemical potential and p... more Chemical bleaching of the Brazilian kaolin: the effect of the pulp eletrochemical potential and pH adjustment. Samples of Kaolin from different regions in Brazil were Characterized by XRD, SEM and chemical analysis. The chemical bleaching study with pH adjustment was accomplished with the fractions below 37 μ m, after classification by screening. The main objective was to Evaluate the conditions of chemical bleaching most que Increase the brightness of these kaolin's samples. Increases between 2.63 and 2.98% in the brightness (ISO) were Observed after the bleaching chemical. Could we say que the reduction of Fe 3 + to Fe 2 + During The chemical bleaching promoted an Increase in the brightness, based on the Pourbaix Diagrams.
Page 1. Beneficiamento de Caulim Pegmatítico da Região Borborema-Seridó Livia da Silva Mello Bols... more Page 1. Beneficiamento de Caulim Pegmatítico da Região Borborema-Seridó Livia da Silva Mello Bolsista de Iniciação Científica, Engenharia Metalúrgica, UFRJ. Paulo Fernando Almeida Braga Orientador, Eng. Químico, M. Sc. ...
Chemical bleaching of the Brazilian kaolin: the effect of the pulp eletrochemical potential and p... more Chemical bleaching of the Brazilian kaolin: the effect of the pulp eletrochemical potential and pH adjustment. Samples of Kaolin from different regions in Brazil were Characterized by XRD, SEM and chemical analysis. The chemical bleaching study with pH adjustment was accomplished with the fractions below 37 μ m, after classification by screening. The main objective was to Evaluate the conditions of chemical bleaching most que Increase the brightness of these kaolin's samples. Increases between 2.63 and 2.98% in the brightness (ISO) were Observed after the bleaching chemical. Could we say que the reduction of Fe 3 + to Fe 2 + During The chemical bleaching promoted an Increase in the brightness, based on the Pourbaix Diagrams.
Page 1. Beneficiamento de Caulim Pegmatítico da Região Borborema-Seridó Livia da Silva Mello Bols... more Page 1. Beneficiamento de Caulim Pegmatítico da Região Borborema-Seridó Livia da Silva Mello Bolsista de Iniciação Científica, Engenharia Metalúrgica, UFRJ. Paulo Fernando Almeida Braga Orientador, Eng. Químico, M. Sc. ...
Uploads
Papers by Livia Mello