Why are Kaolinite and Bentonite used as clay in molding sand?

Why are Kaolinite and Bentonite used as clay in molding sand? Correct Answer High thermo-chemical stability

Clay binders are the most common types of inorganic binder as they are natural earthy material. The most common types of clay used in molding sand are fireclay, kaolinite, and bentonite. Kaolinite and bentonite clays are useful as they have high thermo-chemical stability.
Bissoy MCQ

Related Questions

Kaolinite clay mineral generally adsorbs fewer ions than that of other clay minerals.
Green sand molding is replacing the costlier molding processes as the sand control methods are being applied.
Dry sand molding is cheaper as compared to green sand molding.
Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R: The sand used in slow sand filters is finer than that in rapid sand filters
Select your answer based on the coding system given below:
Sodium bentonite and Calcium bentonite has the same binding properties.
The sodium bentonite binder imparts swelling properties to the molding sand.
Which of the following is a perfect composition of clay (Bentonite) used in moulding sand?
Pressure bag molding is relatively expensive due to tooling costs comparing to vacuum bag molding and autoclave molding.
In sand casting of magnesium alloys, what is the amount of bentonite sand used in a British mix?
Natural Sand is mixed with bentonite gets its properties improved and is called Synthetic Sand.