Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Flocculation of Metal Oxide and Hydroxide Minerals With Cross-linked Starches Containing Chelating Groups.

Authors
Termes-SC; Wilfong-RL
Source
MISSING :17 pages
Link
NIOSHTIC No.
10004446
Abstract
To help develop the basis for new fine-particle separation methods, the Bureau of Mines has investigated the use of cross-linked starches containing four chelating groups--carboxylate, iminodiacetate, diethanolamine, and xanthate--as flocculants for selected metal oxide and hydroxide mineral fines. It was found that those starches capable of interacting with the mineral surface by a chemisorption mechanism (as indicated by zeta potential measurements) produced the highest recoveries and grades of the metal oxide or hydroxide when flocculated from a binary mixture with quartz. The effects of ph, dispersing agent, stirring rate, stirring time, and starch dosage on selective flocculation were studied for binary mixtures of hematite and chromite with quartz. Floc strength becomes important in achieving maximum recoveries by mechanical postflocculation separations.
Publication Date
19850101
Document Type
IH; Report of Investigations
Fiscal Year
1985
NTIS Accession No.
NTIS Price
Identifying No.
RI 8944
NIOSH Division
AVRC;
Source Name
MISSING
TOP