초록

A process for producing open-celled, inorganic sintered foam products which comprises:

대표청구항 ▼

[ We claim:] [1.] A process for the preparation of an open-cell, inorganic sintered foam product, whereina) sinterable, inorganic powder, a fluid vaporizable material which renders this flowable and, if required, a material forming a blowing gas are mixed with one another to give a slip and the slip

[ We claim:] [1.] A process for the preparation of an open-cell, inorganic sintered foam product, whereina) sinterable, inorganic powder, a fluid vaporizable material which renders this flowable and, if required, a material forming a blowing gas are mixed with one another to give a slip and the slip is subjected to continuous positive conveying,b) the positively conveyed slip is subjected continuously to a pressure generation stage so that the vaporizable material vaporizes at least partially, but essentially without volume change and with a pressure increase in the slip, and a slip under pressure is thus formed,c) the slip under pressure is expanded continuously into a volume under lower pressure than that of the slip pressure, with formation of a slip foam,d) the slip foam is converted into a green foam element ande) the green foam element is sintered to form the sintered foam product.