Particle Size Study of Smectite Clays from the City of Pedra Lavrada-PB

Mirtys Allamana Ferreira Cardoso; Alexsandra Cristina Chaves; M.M. Dantas; Isabelle Albuquerque da Silva; I.D.S. Pereira; Gelmires Araújo Neves; Heber Carlos Ferreira

doi:10.4028/www.scientific.net/MSF.775-776.377

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HomeMaterials Science ForumMaterials Science Forum Vols. 775-776Particle Size Study of Smectite Clays from the...

Particle Size Study of Smectite Clays from the City of Pedra Lavrada-PB

Abstract:

The state of Paraíba disposes of one of the largest deposits of smectites in the country. However, these smectites present in their composition elevated contents of accessory minerals, especially quartz. For these clays to become viable to determine technological use it is necessary the elimination of part of these minerals. The particle size analysis of a soil consists in the determination of the size of the particles that constitute it and their distribution in certain intervals. This work aims to study smectite clays from the city of Pedra Lavrada-PB, through the particle size analyses, for the use in water based drilling fluids. The determination of particle size was made by sieving and laser granulometer. Apparent and plastic viscosities were measured from the samples. The clays were left at rest before the test for periods of 7 and 28 days, with and without deflocculant. It was verified that there was no significant difference in the particle sizes in relation to the resting time of the samples.

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20th Brazilian Conference on Materials Science and Engineering

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Materials Science Forum (Volumes 775-776)

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377-382

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.775-776.377

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Online since:

January 2014

Authors:

Mirtys Allamana Ferreira Cardoso, Alexsandra Cristina Chaves, M.M. Dantas, Isabelle Albuquerque da Silva, I.D.S. Pereira, Gelmires Araújo Neves, Heber Carlos Ferreira

Keywords:

Particle Size, Sieving, Smectite

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