Abstract: In a method of effectively utilizing dusts incurring in the reduction of iron ore by means of a reducing gas and separated on that occasion in a scrubber in the form of sludges, the sludges at first are dehydrated and are used as starting materials for the production of cement (FIG. 1).

Abstract: A sintered monolithic ceramic body or an electrical multilayer component includes cavities that are alternately open toward opposite end faces and are open to a slight portion of the lateral surfaces which are at right angles to the end faces. The cavities contain ceramic particles which act as supporting elements and are completely filled with a filler metal whose melting temperature is considerably lower than the sintering temperature of the ceramic body, the metal being capable of wetting the surfaces of the ceramic layers in the cavities in its molten state. The edges between the six outside surfaces of the component are rounded off as by abrasion so that the metal fillings extend up to contact elements which are applied after the metal is introduced.

Abstract: A voltage-dependent resistor or varistor is composed of a monolithic ceramic body made up of a plurality of layers of varistor material containing zinc oxide, alternating with layers of precious metal serving as coatings on the layers and which are alternatingly electrically connected to separate locations on the exterior surfaces of the body. The porosity of the layers of varistor material does not exceed 5%; the proportion of bismuth is at most 1 mol %; and the precious metal coatings include 50-80% by weight of palladium.