Difference between expansion factor and expansion capacity
Sodium base bentonite, calcium base acid bentonite swelling capacity is high; the same type of bentonite, montmorillonite containing the higher swelling capacity. Swelling capacity is one of the technical indexes to determine the type of bentonite ores and evaluate the quality of bentonite.
The swelling property of bentonite is expressed in terms of expansion capacity. The volume after expansion of bentonite in dilute hydrochloric acid solution is called expansion volume, expressed in ml / g sample.
The expansion factor is the ratio of the volume of material to the volume before expansion. Expansion said expansion properties of ore, the vitreous transparency, it is constructed with pearl ore development degree, water level, water and impurities in the raw material and process control factors, evaluation of expanded perlite and vermiculite is the main technical indexes of ore expansion. It is also an auxiliary index to evaluate the properties of Bentonite for casting.
