定 义 用轻质耐火骨料、耐火粉料、结合剂和外加剂等，在施工时加水或含结合剂的溶液调配成的可浇注成型的不定形耐火材料。一般用做热工设备的隔热衬，以保温降低能耗。 应用学科 耐火材料（三级学科）
阀板、阀体的耐火衬里隔热层采用莫来石轻质耐火浇注料、耐热层采用磷酸刚玉质耐火浇注料，进行两层浇注。
Being as two layer refractory lining on valve plate and valve body, light mullite and phosphate corundum refractory castables are taken as heat isolation and heat resisting layers respectively.
它集重质耐火浇注料和轻质隔热浇注料的优点于一体，既具备强度高、耐高温的机械性能，又具备低体积密度、低导热率的隔热性能。
It has the advantage of the heavy quality refractory and the light quality and has the higher strength, high temperature resistant, low physical volume density and low heat transmit rate.
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