Krupp Polysius Ag

Other

Polysius Ag

Manfred Muller

Osbert R Knobloch

Otto Heinemann

Norbert Patzelt

Ludger Kimmeyer

Heinrich Henne

Norbert Bredenholler

Ludger Brentrop

Lutz T Schneider

Gerhard Gudat

Peter Wenningkamp

Josef A Wessel

Process for manufacturing locket-halves

A 10-carat gold alloy for ornaments comprises 41.7% gold 12.0 to 13.0% silver, 40 to 41.5% copper, and 4.5 to 5.5% zinc.

10-Carat gold alloy for ornaments

The invention relates to a method and to apparatus for crushing material for grinding, in which the material for grinding first of all passes in multiple circulation through a grinding stage which operates on the pressure crushing principle and then without further grinding is delivered to a classification stage consisting of two classification assemblies set to different degrees of fineness, the streams of fines from the two classification assemblies being mixed together. By the combination of these two measures a desired flattening of the particle size distribution of the end product is achieved.

Method and apparatus for crushing material for grinding

The invention relates to a method and to apparatus for crushing brittle material for grinding using a material bed roll mill, in which at least a proportion of the branch stream returned to the roll gap is dried to such an extent that a mixed moisture content which lies below a critical moisture content is produced in the roll gap. In this way it is possible even for material for grinding which has a high moisture content and above a critical moisture value has a tendency to sticking and/or caking on to be crushed satisfactorily.

Method and apparatus for crushing brittle material for grinding

The invention relates to apparatus for crushing brittle material for comminution which is subjected to individual grain crushing and material bed crushing in a roll crusher at high pressure and with agglomerates being formed, these agglomerates being loosened in the sifter with the aid of a separate arrangement and removed from the crushing system. In this way a crushing stage which is provided for further crushing has its load significantly reduced and as a result the apparatus is rendered considerably more economical.

Apparatus for crushing brittle material for comminution

The invention relates to a method and to apparatus for the crushing of material to be comminuted by means of a material bed roll mill, in which such material is forcibly delivered in a regulable mass flow to the roll gap. In this way even materials which tend to slip on the rolls can be crushed satisfactorily. It is also possible to keep the nature of the product constant over a wide range of variations in the throughput.

Method and apparatus for the crushing of material

The invention relates to an air separator having a rotor provided with feed passages for the material to be separated which extend radially outward and between which extraction openings are arranged. The space between adjacent feed passages which exists between the outer end of the feed passages and the extraction openings is axially delimited on at least one side by a stationary element forming part of an extraction housing. In this way, problems of wear in the outer region of the rotor are reduced. In addition, there is no longer any need for an exact sealing gap to be maintained between the rotor and the extraction housing. Finally, the free flow cross-section for the separation air is increased for the same overall dimensions of the separator.

Growing community of inventors

Ennigerloh, Germany

Manfred Muller