A Novel Synthetic Adsorbent for Pitch Control, Paper360º, January/February 2018

The primary organic contaminant in the pulping process is pitch. Pitch reduces pulp mill efficiencies and productivity from the washers through to the pulp dryer. Talc, an inorganic adsorbent, is the most common treatment for pitch control. Talc can cause scaling on evaporators, and is generally applied after brownstock washing.

Yet talc has been raised as a health concern in personal care products, and its use is monitored by producers of pulp for fluff, tissue, and toweling. The application of talc is dusty, requires dispersion equipment, and demands additional attention from operations personnel. Overuse of talc can also damage machine clothing by accelerating wear.

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