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采用注浆法成型,生产便器、洗面器、下水用品、浴盆等卫生陶瓷制品,使用的泥浆浓度较大,泥浆比重应在1.8～2.0g/cm~2范围内,即干燥粘土100公斤,含水20～30立升。将水与粘土等原料和解胶剂共同混合搅拌成具有流动性的液浆。搅拌约两小时即可;如搅拌时间过长,就会胶凝或胶化。通常使用的解胶剂为碳酸钠和水玻璃的混合物,用量约为干燥原料混合物的0.4%左右。碳酸钠与水玻璃的比例,常以重量比碳酸钠30%、水玻璃70%为基准。
The grouting method is adopted to produce sanitary ceramic products such as toilets, face washers, water supplies, and bath tubs. The concentration of mud to be used is large. The specific gravity of the mud should be in the range of 1.8 to 2.0 g/cm2, that is, 100 kg of dry clay. 20 to 30 liters. Water and clay and other raw materials and sizing agent are mixed and stirred to form a liquid slurry. Stir for about two hours; if the mixing time is too long, it will gel or gel. The commonly used sizing agent is a mixture of sodium carbonate and water glass, and the amount is about 0.4% of the dry raw material mixture. The ratio of sodium carbonate to water glass is usually based on a weight ratio of 30% sodium carbonate and 70% water glass.