Discussion on the Factors Affecting the Expansion Capacity Test of Bentonite
Bentonite is added as a binder for pellets during the production of sintered pellets.However,bentonite is a kind of clay rock with SiO2 as the main component,and its addition is bound to reduce the iron grade of the pellets.Therefore,in the production of pellets,the less added amount of bentonite,the better.Expansion capacity can accurately reflect the hydration properties of bentonite,and reflect the comprehensive performance of bentonite's charge,dispersibility and expansibility.It is an important quality indicator of bentonite for metallurgical pellets.Experimental data show that:drying temperature and the drying time,the sample size is the main factors affecting the expansion of bentonite receiving test results.