NIOSHTIC-2 Publications Search

Method for Rapid Sedimentation of Fine Particles from Suspensions.

Authors
Smelley-AG; Spruiell-CE
Source
U S Pat 4 000 067 1976 Dec; :
Link
NIOSHTIC No.
10011891
Abstract
In the title process, particularly useful in rapid settling of fine mineral particles resulting from beneficiation of phosphate ore, one part slime is treated with at least one part hf, nh4f, and/or h2sif6 at ph 0.5-5.0. Thus, 1 part (based on solids) phosphate slimes from phosphate ore beneficiation is treated with 1 part hf (as a dilute aqueous solution), resulting in onset of settling after 5-10 minutes and settling adequate for filtration after 1 h.
Publication Date
19761201
Document Type
PA;
Fiscal Year
1977
Identifying No.
PAT 4,000,067
NIOSH Division
TURC;
Source Name
U.S. Pat. 4,000,067; Dec. 28, 1976; Chem. Abstr. 86:78,283Q
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division