Memorial Tributes Volume 17 (2013) / Chapter Skim
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KLAUS SCHOENERT
KLAUS SCHOENERT
Pages 268-277
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From page 269... ...
The objective of crushing and/or grinding may be to liberate minerals in ores, produce particles of controlled size, produce fine particles, or increase the surface area of the material. Hundreds of millions of tons of materials -- ores, cement, aggregate, coal, ceramics, grain, and even chocolate -- are comminuted annually.
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From page 270... ...
had come to Karlsruhe from industry to establish an institute called Mechanische Verfahrenstechnik, that is, the mechanical processing of particles. Rumpf wanted a physicist to join the institute as his assistant and interviewed Klaus for the position.
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From page 271... ...
Rather than investigating comminution in mills, they undertook research on fundamental breakage phenomena of single particles. The objective was to ascertain how a particle is formed, how it breaks, how breakage depends on size, the energy needed to break the particle, the probability of particles breaking at different energy levels, the fragment size distribution after breakage, and the newly created surface.
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From page 272... ...
Rumpf established the European Comminution Symposium under the auspices of the German Chemical Engineering Society to disseminate and discuss research results. From 1966 to 2004, I participated in European Comminution Symposium meetings.
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From page 273... ...
When Professor Rumpf retired in 1977, Schoenert became the speaker of the Directorium, but he could not be the director since only ordentliche professors can hold that title, and in Germany you cannot become ordentliche professor in the university from which you received your doctorate unless you have held a regular appointment elsewhere. After Schoenert's group had thoroughly studied the breakage of single particles, they investigated the breakage of confined beds of particles in a piston-die press.
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From page 274... ...
The first application of HPGRs in the mineral industry was at the diamond mines of DeBeers, where the rolls were installed not for energy but for diamond liberation. Better liberation of the diamonds from the matrix rock is attained because of the shear forces acting between the gangue matrix material and the hard diamonds as the ore passes through the gap between the rolls.
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From page 275... ...
A great deal of test work is under way worldwide for further mining industry applications. In 1981, Schoenert received a call to join the faculty at the Technical University of Clausthal as ordentliche professor and director of the Institut für Aufbereitungstechnik (Institute for Mineral Processing)
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From page 276... ...
Thanks to Klaus Schoenert, I was awarded in 1984 a Senior American Scientist Award from the Alexander von Humboldt Foundation, through which we spent a year or more in Clausthal spread out over 1984, 1987, and 1996. During that time, I was involved in research on HPGR comminution and several joint publications with Schoenert.
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From page 277... ...
Aplan Award of the US United Engineering Foundation; in 1997 the International Mineral Processing Lifetime Achievement Award, International Mineral Processing Congresses; in 2002 the Ehrenmedaille, VDI (Gesellschaft Verfahrenstechnik und Chemieringenieurwesen) ; and in 2004 a Doktor-Ingenieur Honoris Causa, TU Bergakademie Freiberg.
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