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[May 2004]
Jaw Crushers for Primary Size Reduction
Retsch GmbH (Haan, Germany) says that the high final fineness and excellent crushing ratio in its jaw crushers help to increase the efficiency of crushing and pre-crushing of hard and brittle materials for subsequent analysis or further fine grinding in laboratories and industrial plants.
There are four different models of jaw crushers from the laboratory-scale BB 51 to the largest model BB 300 crusher which is also available as a process line version.
With feed sizes between 35mm and 150mm, the jaw crushers can achieve a final fineness of down to 0.5mm, depending on the model. The main fields of application are construction materials, mineralogy and metallurgy, ceramics and glass, materials research, and environmental analysis.
The jaw crushers are said to offer operational features which allow for reproducible crushing processes and wear compensation. The gap width can be continuously adjusted so that a new zero-point can be easily obtained. Thus it is possible to compensate for the increasing breaking jaw distance due to wear. Retsch says that in contrast to crushers whose gap width can only be set in fixed steps, this zero-point adjustment guarantees the reproducibility of the crushing results.
www.retsch.de
ENDS