The first part of this paper consists of a study based on the available literature concerning the analysis of chip quality in the sulphate pulp process and the factors having an effect on chip quality. Using the empirical material, the suitability of the Williams chip classifier in evaluating the quality of chips made by the Algol chipper is first studied. The distribution of length and thickness of pulpwood-, long logs-, whole tree-, and logging residue chips in different conditions determined by screening is then presented.
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