Factors Affecting Pitch Deposition and the Function of Pitch-Control Agents
Qin Meng-hua;Chen Jia-xiang (South China University of Technology, Guangzhou, 510641)
The deposition tendency of dispersed colloidal pitch was studied with Vibromixer method. The effects of water hardness, pH value, dispersed pitch concentration, ion strength and pulp consistency on piteh deposit formation were discussed. Evaluation of pitch-control agents. such as ultrafine talc, nonionic and cationic surfactant and alum, was described.