Abstract
A classification of methods for manufacturing cast (without the use of vibration) ceramic castables is suggested and the mechanism of their structure formation is formulated. Cast (self-flow) castable mixtures with a moisture content of 4.8–5.5% are developed based on HCBS of quartz sand and a polydisperse silica filler (dmax = 1–7 mm). The mixtures are used to cast ceramic castables with an open porosity of 11–16%. After drying and heat treatment at 1200 and 1300°C their ultimate compressive strength is 6–14, 20–35, and 60–120 MPa, respectively. As compared with similar pressed and rammed ceramic castables; cast ones are characterized by a lower porosity and a substantially higher strength.
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Pivinskii, Y.E., Timoshenko, K.V. Cast (self-flow) ceramic castables. 1. Fabrication and some properties of cast silica ceramic castables. Refract Ind Ceram 40, 442–447 (1999). https://doi.org/10.1007/BF02764197
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DOI: https://doi.org/10.1007/BF02764197