ISO 923:2022 PDF

Scope: This document describes the principles and methods for evaluating the performance of density separation equipment used for coal cleaning operations . Testing and sampling procedures are specified, and methods of presenting test results are detailed. Performance parameters are recommended and defined, and their determination is formulated, thereby permitting their use in evaluating, comparing and predicting performance levels of coal cleaning operations. This document is applicable to the following types of coal cleaning equipment using relative density (RD) as the main characteris tic for separation: a) dense-medium separators; b) j igs; c) other density-based separators, including spiral separator, hindered settling cleaners, shaking table, water-only cyclone, etc.

ISO 923:2022 Referenced Document

ISO 1170 Coal and coke — Calculation of analyses to different bases
ISO 1953 Hard coal - Size analysis by sieving
ISO 7936 Coal — Determination and presentation of float and sink characteristics — General directions for apparatus and procedures

2022 ISO 923:2022 Coal — Density separation equipment for coal — Performance evaluation
2000 ISO 923:2000 Coal cleaning equipment - Performance evaluation
1975 ISO 923:1975 Coal cleaning tests; Expression and presentation of results