Pressure-molded high-alumina ceramic castables. 3. Effect of processing additives on pressure-induced compaction and properties of bauxite-quartz glass matrix systems

被引：0
|
作者：
Yu. E. Pivinskii
Pavel V. Dyakin
Petr V. Dyakin
机构：
[1] Kerambet Research and Development Firm,
[2] St. Petersburg State Technological Institute (Technical University),undefined
来源：
Refractories and Industrial Ceramics | 2006年 / 47卷
关键词：
Compressive Strength; Open Porosity; Lignosulfonate; Water Glass; Molding Pressure;
D O I：
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中图分类号：
学科分类号：
摘要：
The effect of lignosulfonate (LST) and surface-active substances (SAS) on compaction and properties of bauxite-quartz glass matrix systems is studied. LST added at an optimum concentration to bauxite-based highly concentrated ceramic binding suspensions (HCBS) causes a 2–3% decrease in preform porosity. In materials sintered at high temperature the effect of decreased porosity is more pronounced. In preforms molded at 500–700 MPa no defect due to overpress is observed. The SAS, judged from their efficiency for decreasing porosity, are arranged in ascending order: sodium silicate water glass, sodium tripolyphosphate, complex organomineral thinner, and FS-20 castament.
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页码：132 / 138
页数：6
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