Process for the production of rutile mixed-phase pigments

Details Process for the production of rutile mixed-phase pigments Process for the production of rutile mixed-phase pigments

1989-01-18

1990-04-24

Rosenberg, Peter D.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106436, C09C 136

Patent

active

049197266

ABSTRACT:
A process for the production of rutile mixed-phase pigments comprising calcinating of a solid mixture of titanium dioxide or titanium oxide hydroxide with a dye-producing compound of a metal, in one or more directly heated, continuously operated rotary kilns, wherein in terms of material flow, air is introduced into the kiln atmosphere countercurrently to the direction of flow of the solids in the second half of the rotary kiln.

REFERENCES:
patent: 3022186 (1962-02-01), Hund
patent: 3560234 (1971-02-01), Holbein
patent: 3607338 (1971-09-01), Webb
patent: 3942999 (1976-03-01), Hinley
patent: 4448608 (1984-05-01), Jenkins
Ullmanns Encyklopadie der Technishen Chemie, Petrolsulfonate bis Plutonium, Band 18, p. 608.

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