Method of milling the Portland clinker for the production of gyp

Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing

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106664, 106725, 106728, 106764, 106809, 106810, C04B 2416, C04B 702

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active

051259761

ABSTRACT:
A method for milling Portland clinker for the production of gypsumless Portland cements is provided. The method comprises milling the Portland clinker in the presence of 0.01 to 0.05 weight % of a synthetic, organic, surface-active substance with wetting properties that is stable in an alkaline medium of pH 9-12, with the exception of the triethanolamide of dodecylbenzylsulphonic acid, to produce gypsumless Portland cements with specific surfaces of 350-750 m.sup.2 /kg.

REFERENCES:
patent: 3615785 (1971-10-01), Moorer et al.
patent: 3689297 (1972-09-01), Dybalski
patent: 4069063 (1978-01-01), Ball

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