Definition and function of lime activity
The activity of lime lime: the definition of organizational structure and calcination temperature and time are closely related to organizational structure influence the activity of lime including bulk density, porosity, grain size and surface area than CaO minerals. The grain size decreases, the specific surface area is larger, the higher porosity, the higher the activity of lime the chemical reaction, ability is stronger.
(1) determination of lime activity by acid-base titration method(2) lime activity indexAn indicator of the hydration reaction rate of hydrated lime, which is expressed as the number of 4mol / L hydrochloric acid consumed by Ca (OH) 2 produced during the neutralization of lime digestion in the sufficient time
Application: steelmaking practice shows that the lime can improve the dephosphorization and desulfurization efficiency of 80%, and shorten the refining time, within 3-5min can be completely with acidic substances in the molten steel and the reaction is completed, the lime shall at least 6-10min. in addition to improve the service life of more than 40%, the charge cost reduced to 10 million 5-8kg/t steel, t calculation, annual savings about 15 million, production efficiency significantly
