Abrasive tool making process – material – or composition – Miscellaneous
Patent
1981-07-09
1983-01-25
Hearn, Brian E.
Abrasive tool making process, material, or composition
Miscellaneous
51307, 423466, 423463, C09C 102, C01G 4900
Patent
active
043701485
ABSTRACT:
Chlorofluoroferrates(II,III) are manufactured by fusing alkali metal halides or ammonium halides with an iron(III) halide and metallic iron. The starting materials used are, in particular, (a) an alkali metal chloride or ammonium chloride, (b) an alkali metal fluoride or ammonium fluoride, (c) anhydrous iron(III) chloride and (d) iron powder. The reaction is carried out a temperature of 300.degree. to 900.degree. C. The chlorofluoroferrates, which have a markedly lower hygroscopicity compared with customary chloroferrates, are particularly suitable for use as active fillers for grinding wheels.
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Leech et al., J. Inorg. Nucl. Chem., (1975), vol. 37, pp. 2279-2282.
Hirschberg Rudolf
Schonfeld Bernd
Hearn Brian E.
Riedel-De Haen Aktiengesellschaft
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