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- Title
The Effect of Thinning Agents on Rheological and Technological Properties of the Bauxite HCBS System.
- Authors
Pivinskii, Yu. E.; Ermak, Yu. N.; Cherevatova, A. V.; Shapovalov, N. A.
- Abstract
The thinning effect (deflocculation) in wet-ground highly concentrated composite suspensions (90% bauxite + 10% quartz glass) is studied. The thinning agents used are sodium tripolyphosphate, SB-5 organic plasticizer, and mixtures thereof. Maximum thinning effect is attained with a composite organic mineral additive (20 – 35% SB-5 + 65 – 80% sodium tripolyphosphate). Optimum concentration of the additive is found to be 0.08 – 0.1%, or 0.4 – 0.5 mg/m2 solid-phase surface. At optimum composition and additive concentration, the thixotropic dilatant flow regime of HCBS changes to a dilatant flow regime with a sharp decrease in viscosity and an increase in density of cast preforms. A mechanism for the thinning effect due to additives is considered.
- Subjects
SODIUM tripolyphosphate; SODIUM phosphates; ALUMINUM ores; BAUXITE; PHYSICS; PHOSPHATES
- Publication
Refractories & Industrial Ceramics, 2003, Vol 44, Issue 3, p169
- ISSN
1083-4877
- Publication type
Article
- DOI
10.1023/A:1026356302096