FIELD: process engineering.
SUBSTANCE: invention relates to making ceramic boards. Proposed method comprises making initial mix containing ceramic sand with grain size not exceeding 2 mm, preferably smaller than 1.2 mm, binder and filler, settling said mix onto temporary substrate for vacuum compaction, drying and annealing. Said binder consists of water dispersion of silicon oxide colloid, referred to as silica sol, mixed with organic binder selected from water solution of polyvinyl alcohol, water soluble cellulose, or sugar. Said filler represents mineral powders selected from feldspars, nephelines, syenites mixed with clays and/or kaolin. Note here that, after annealing, said powder produce solid ceramic matrix.
EFFECT: higher quality.
11 cl, 3 dwg
