NaOH-STPP THINNER IMPROVES WET GRINDING OF PHOSPHATE ROCK.

Richard L. Lehman, John A. Shepard, Charles F. Sikorski, Fred J. Kelso

Research output: Contribution to specialist publicationArticle

Abstract

Mixtures of the chemical additives NaOH, Na//2CO//3, and sodium tripolyphosphate (STPP)have been evaluated for their ability to reduce the viscosity and improve the grinding efficiency of a 75% solids slurry of Florida phosphate rock. The cost-effectiveness of these mixtures was determined based on increased P//2O//5 recovery and on reduced costs of double liming of pond water. The stronest performance was identified within the NaOH-STPP binary system and a mixtrure of 65% NaOH (of a 50% solution) plus 35% STPP was determined to be the most cost-effective mixture for a variety of phosphate rock types.

Original languageEnglish (US)
Pages90-94
Number of pages5
Volume184
No6
Specialist publicationEngineering and Mining Journal
StatePublished - 1983

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geochemistry and Petrology
  • Industrial and Manufacturing Engineering

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