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The Effect of Thinning Agents on Rheological and Technological Properties of the Bauxite HCBS System

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Refractories and Industrial Ceramics Aims and scope

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.

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Authors and Affiliations

  1. NVF Kerabmet Join-Stock Company, Belgorod, Russia

    Yu. E. Pivinskii, Yu. N. Ermak, A. V. Cherevatova & N. A. Shapovalov

  2. BelGTASM, Belgorod, Russia

    Yu. E. Pivinskii, Yu. N. Ermak, A. V. Cherevatova & N. A. Shapovalov

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  1. Yu. E. Pivinskii
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  2. Yu. N. Ermak
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  3. A. V. Cherevatova
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  4. N. A. Shapovalov
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Pivinskii, Y.E., Ermak, Y.N., Cherevatova, A.V. et al. The Effect of Thinning Agents on Rheological and Technological Properties of the Bauxite HCBS System. Refractories and Industrial Ceramics 44, 169–174 (2003). https://doi.org/10.1023/A:1026356302096

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