The scale inhibiter for circulating cooling water system, and scale melting method of the manganese in steel

摘要

PROBLEM TO BE SOLVED: To provide a scale preventing agent and method for a circulating cooling water system in a steel manufacturing process which can solve a scale problem in the circulating cooling water system by preventing generation of scale containing manganese and zinc, generated in the circulating cooling water system in the steel manufacturing process, and dissolving manganese in a deposited scale component.;SOLUTION: The scale preventing agent prevents scale deposition of manganese and zinc in the circulating cooling water system in the steel manufacturing process, and contains phosphonic acids, such as 1-hydroxyethylidene-1,1-diphosphonic acid and 2-phosphonobutane-1,2,4-tricarboxylic acid the like, or their salt. In the scale preventing method, the scale preventing agent is added to the circulating cooling water system.;COPYRIGHT: (C)2010,JPO&INPIT