用磷矿尾矿生产矿物膏体

Q3 Earth and Planetary Sciences

Rem-Revista Escola De Minas Pub Date : 2014-12-15 DOI:10.1590/0370-44672015680103

André Carlos Silva, E. M. S. Silva, Â. S. S. Junior, João Paulo Aparecido Arruda, Vitor Rodrigues de Araújo Vaz

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引用次数: 3

摘要

脱水阶段是最重要的工业单元操作之一，在许多不同的工业中被广泛采用。目前，选矿尾矿处理因其对环境的破坏而成为一个大问题。位于巴西Catalao/ Go的英美磷酸盐巴西公司的磷矿处理，以480 t/h的工厂饲料(约占加工厂饲料的37.5%)产生约180 t/h的尾矿，其中固体含量为5%至10%，P2O5含量约为14%。目前，尾矿直接排至尾矿库。本文提出利用磷矿厂尾矿生产膏体。通过对尾矿样品进行滗析，得到澄清液并排干。倒出的纸浆然后经过真空过滤的第二阶段。这一阶段加入絮凝剂后，由于絮凝后的物料没有通过过滤介质，而是被过滤介质保留，因此在下一阶段的脱水中沉降速度更快，脱水性能也更好。结果表明，膏体尾矿的固含量达到65%左右。

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Mineral paste production from phosphate rock tailings

The dewatering stage is among the most important industrial unit operations, and is widely adopted in many different industries. Nowadays, mineral processing tailings disposal is a big problem due to the environmental degradation it causes. The phosphate rock processing in Anglo American Phosphate Brazil, situated in Catalao/ Go/Brazil, generates around 180 t/h of tailings for a plant feed of 480 t/h (approximately 37.5% of the processing plant feed), with 5 to 10% of solids and approximately 14% of P2O5. Nowadays, the tailings are sent directly to the tailings dam. The present work proposes paste production using the tailings from the phosphate rock processing plant. Through decantation of a tailings sample, a clarified liquid was obtained and drained. The decanted pulp then went through a second stage consisting of vacuum filtration. Flocculant addition in this stage generated a faster sedimentation rate and a higher dewatering performance in next stage of dewatering, because the flocculated material was retained by the filter medium instead of passing through it. The results were satisfactory for paste tailings production with a solid percentage of around 65%.

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来源期刊

Rem-Revista Escola De Minas 工程技术-工程：土木

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： REM – International Engineering Journal (antigua REM – Revista Escola de Minas) es la primera revista técnica de Sudamérica. Fue fundada en enero de 1936 por los estudiantes de la Escuela de Minas de Ouro Preto y desde entonces se ha especializado en la publicación de artículos en las áreas de la Ingeniería Civil, Geología, Metalurgia y Materiales y, Minería y Mecánica y Energía. Su objetivo es servir como un medio de publicación para los trabajos técnicos y científicos originales de investigadores nacionales y extranjeros en esas áreas. Contribuciones originales (artículos y cartas) son aceptadas. Artículos de revisión dependen de la invitación y/o análisis de los Editores. El envío de artículos para su publicación implica que el trabajo no ha sido publicado previamente, que no está siendo presentado para su publicación en otra revista y no se publicará en otro lugar, en la misma forma, sin el permiso, por escrito, de los Editores/Autores.