Abstract: An apparatus for disintegrating a fiber agglomerate has a feed tank for receiving and holding a batch of a fiber agglomerate. A turbulence chamber is connected to the feed tank for receiving a subquantity of the batch of fiber agglomerate and disintegrating the fiber agglomerate into separate fibers with air turbulence. A screening chamber is connected to the turbulence chamber for receiving the subquantity of the batch of fiber agglomerate and screening out separate fibers from shot particles and remaining fibers. The residual fibers and shot particles are fed back to the feed tank for reprocessing to obtain the maximum output of cleaned, separated fibers.

Abstract: The invention relates to a ceramic molding which is manufactured from high-temperature resistant, fire-resistant or refractory fibers and fine-grain, fire-resistant or refractory materials and, in certain cases, from other customary additives. The ceramic molding is characterized by the fact that its porosity gradually and continuously increases along an axis of the molding from less than 20% to more than 70%. The areas with low porosity comprise the fine-grain, fire-resistant or refractory materials. The areas of high porosity comprise ceramic fiber, such as, fibers of Al.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2, C, SiC or mixtures thereof. The intermediate areas are constructed of mixtures of ceramic fiber and fire-resistant or refractory materials. The invention also relates to the use of such a ceramic molding method for the manufacture of compound moldings saturated or infiltrated with organic resins, pitch, tar, metals, metal alloys or glasses.