Several important problems related to ceramic shell used silica sol as binder were studied in order to raise technical level of the shell making and improve quality of the castings.
探讨硅溶胶型壳制壳工艺中几个主要问题，以求提高工艺技术水平和铸件质量。
FCC catalysts using silica sol as the binder features improved selectivity to coke and higher resistance to attrition. strength of the catalysts can be enhanced by adding surf…
含硅粘结剂的催化剂抗磨损能力和焦炭选择性较好，催化剂的强度可以通过添加表面活性剂和铝盐得到改善。
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