CPC Main Group
C04B 11/00 Calcium sulfate cements
8 direct subcodes
Child Classifications
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- C04B 11/02 dehydrating gypsum
- C04B 11/05 obtaining anhydrite, (C04B11/028 takes precedence)
- C04B 11/06 starting from anhydrite
- C04B 11/26 ; starting from phosphogypsum or from waste, e.g. purification products of smoke (C04B11/02 takes precedence; chemical purification of smoke, fumes or exhaust gases B01D53/00 )
- C04B 11/28 Mixtures thereof with other inorganic cementitious materials (C04B7/04, C04B7/153 take precedence)