Bentonite Properties/ Specification - Minerals Export
The calcium (Ca) bentonite or non-swelling has a double layer of water particles containing Ca2+ as the exchangeable ion. These ions sometimes are found exchanged by Fe2+ or Mg2+. In business, the sodium bentonite (swelling type) is designated as bentonite, and the non-swelling type (Calcium Bentonite) is termed as fuller's earth.
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