Process for the production of black pigments based on iron

Details Process for the production of black pigments based on iron Process for the production of black pigments based on iron

1986-05-09

1987-10-20

Morris, Theodore

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106309, 423633, C04B 300, C04B 1400

Patent

active

047012218

ABSTRACT:
A process for the production of black iron oxide pigments having a magnetite structure from iron ion-containing acidic waste water which comprises precipitating the iron ions with alkaline substances in a first stage at ambient temperature to produce a raw slurry and in a second stage, concentrating the raw slurry adjusted to a pH of from 5.0 to 8.0 with acidic substances and then ripening the concentrated slurry at temperatures above 70.degree. C.

REFERENCES:
patent: 857044 (1907-06-01), Fireman
patent: 2656282 (1953-10-01), Clarke
patent: 3970738 (1976-07-01), Matsul et al.
patent: 4123501 (1978-10-01), Kohler

Affiliated with

Also associated with

Rating

Process for the production of black pigments based on iron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of black pigments based on iron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of black pigments based on iron will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1610915