Testing of a pilot-scale, plate-and-frame filter press for dewatering fine silica-sand slurries

Shubham Verma, Mark S. Klima, Barbara J. Arnold

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Laboratory testing was conducted to evaluate the performance of a pilot-scale, T.H. filter press for dewatering fine silica-sand slurries. The plate-and-frame filter press is fully automated and is equipped with a hydraulic system, which operates the plate and diaphragm feed pumps up to a pressure of 1035 kPa. The unit contains a single set of plates with an effective filtration area of 0.16 m 2 on each plate. A thickener underflow sample was collected from a silica-sand processing plant located in northeastern United States. The sample was nominal -0.15 mm and contained 76% of -0.075 mm material, with 37% of the material finer than 0.025 mm. A statistical design was developed to evaluate the effects of filter time, air-drying time, and air pressure on filter cake moisture, filtrate flow rate and solids content, solids recovery, and filter press unit capacity. Product moistures ranged from 12.0% to 17.5% with filtrate solids contents less than 0.1% by weight. Product unit capacities ranged from 58 kg/hr/m 2 to 128 kg/hr/m 2 with solids recoveries over 99.5% in all cases. Lower cake moistures were usually associated with lower unit capacities. The results indicate that the filter press is capable of producing handleable filter cake without the use of additional flocculants.

Original languageEnglish (US)
Title of host publicationSeparation Technologies for Minerals, Coal, and Earth Resources
Pages85-93
Number of pages9
StatePublished - May 14 2012
EventInternational Symposium on Separation Technologies for Minerals, Coal, and Earth Resources, Part of the 2011 SME Annual Meeting - Denver, CO, United States
Duration: Feb 27 2011Mar 2 2011

Publication series

NameSeparation Technologies for Minerals, Coal, and Earth Resources

Other

OtherInternational Symposium on Separation Technologies for Minerals, Coal, and Earth Resources, Part of the 2011 SME Annual Meeting
CountryUnited States
CityDenver, CO
Period2/27/113/2/11

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geology

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  • Cite this

    Verma, S., Klima, M. S., & Arnold, B. J. (2012). Testing of a pilot-scale, plate-and-frame filter press for dewatering fine silica-sand slurries. In Separation Technologies for Minerals, Coal, and Earth Resources (pp. 85-93). (Separation Technologies for Minerals, Coal, and Earth Resources).