METHOD FOR EVALUATING GRANULATION AGENT FOR SINTERING RAW MATERIAL, METHOD FOR GRANULATING SINTERING RAW MATERIAL, AND GRANULATION AGENT FOR SINTERING RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a sintering raw material having excellent granulation properties even if a hardly granulable raw material such as powdery iron ore and a pellet feed with deteriorated quality largely comprising fine powder, and a method for evaluating a granulation agent for a sintering raw material.SOLUTION: Provided is a method for evaluating a granulation agent for a sintering raw material characterized in that, in a method for evaluating a granulation agent added when a sintering raw material essentially consisting of iron ore is granulated, zeta potential when the granulation agent is dispersed into water with a pH of 11 to 13 is 20 mV or higher.