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Question:

What is the maximum amount of alkali added to the casting bentonite?

What is the maximum amount of alkali added to the casting bentonite?

Answer:

Add soda, plus the amount of calcium soil according to the taste that is the optimal alkali determination. Usually 3--5%, too much counterproductive.
Calcium based bentonite is modified by sodium to improve its thermal, wet, tensile strength, permeability and reusability.

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