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Samples
are crushed in oscillating jaw crushers to 70% passing 10 mesh (1.70mm). Samples
are riffle split; typically a 250g sub sample is pulverized, the remaining is
stored as reject. Ring-mill pulverizers grind samples to 95% passing 150 mesh
(106 micron). At the beginning of each shift and/or the start of a new group, samples
are screened to ensure correct particle sizes. Crushers, rifflers, and pans are
cleaned with compressed air between samples. Pulverizing pots and rings are brushed,
hand cleaned, and air blown. Our pulverizers are capable of grinding up to
1000g. Crushers are capable of crushing as fine as 95% passing 10 mesh.
Special or customized sample preparation procedures are easily adaptable. |
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