Grinding aids for granular blast furnace slag

Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing

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241 16, C04B 714

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active

043869637

ABSTRACT:
Granular blast furnace slag is interground with amine salts of aromatic group-containing carboxylic acids to enhance the efficiency of the grinding operation. In a preferred embodiment, a mixture of aromatic group-containing carboxylic acids obtained as a low cost by-product in a commercial process to produce phthalic anhydride, is utilized to prepare the amine salt grinding aid of the invention.

REFERENCES:
patent: 2031621 (1936-02-01), Tucker et al.
patent: 2360517 (1944-10-01), Scripture
patent: 2588248 (1952-03-01), Klein
patent: 3068110 (1962-12-01), Fagerholt
patent: 3329517 (1967-07-01), Dodson et al.
patent: 3607326 (1971-09-01), Serafin
Publication of T. Iwabuchi, Effect of Additives on Crushability of Cement Raw Materials, Semento Gijutsu Nempo, 25, (1971), pp. 56-59.
Publication of R. Kondo et al., Slag Powder Base Compact with Carbonation Promoter (Japanese Kokai 77-140536), Chemical Abstracts, vol. 89, (1978), No. 29770z.
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Edition, supplement vol., John Wiley & Sons, Inc., New York, 1971, pp. 876-878.

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