废纸浆湿部体系电导率的演变规律 及其成因分析.

The conductivity of white water in the recycled paper making system is the key factor affecting the efficiency of wet-end additives and the main technical difficulty in wet-end control of recycled paper recycling. This article explores the factors affecting the conductivity of white water in recycled paper pulp by simulating the closed cycle of white water during the papermaking process. The experimental results indicate that the closed cycle of the white water system in recycled pulp papermaking will lead to a significant increase in the conductivity of the white water. The accumulation of inorganic salts is one of the reasons for the increase in conductivity of white water, but when inorganic salts accumulate to dynamic equilibrium, the increase in conductivity caused by inorganic salts does not exceed 5% of the initial conductivity. Under the closed cycle of white water, the organic electrolyte formed by starch degradation and deterioration is the main cause of the continuous increase in the conductivity of white water in recycled pulp. Low temperature and fungicide treatment can effectively suppress the increase in the conductivity of circulating white water. [ABSTRACT FROM AUTHOR]