Improvements relating to the Treatment and Utilization of Artificial Sulphates and Carbonates of Lime.

摘要

12,391. Monin, A. May 30. Weighting pulp.-The sulphates and carbonates of calcium, crystallized or otherwise, obtained as waste products from stearine, soap, and chemical works are dried or calcined at a temperature varying with their origin &c., crushed or screened either dry or in water, dried in the latter case, and then used for loading pulp.