Navegando por Assunto "Polpa de bauxita"

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Determinação do ponto de carga zero da bauxita da região nordeste do Pará
(2012-12) PINTO, Rayssa Luana da Silva; SILVA, Kelly Cristina Sarmento da; CARDOSO, Dilson Nazareno Pereira; MACÊDO, Emanuel Negrão; FELIPE, Augusta Maria Paulain Ferreira
In the northeast of Pará, Brazil, the transport of bauxite pulp is through pipeline, being the viscosity a parameter which can interfere in the pumping. This study illustrates the influence of pH on pulp rheology through of determination of the zero point of charge. Were done particle size analysis, SEM, EDS, potentiometric tests testing ammonia chloride as indifferent electrolyte and rheological tests at different pH values. The results revealed that ammonia chloride can be used as indifferent electrolyte and showed a decrease in viscosity when there is far of the zero point of charge.