Process for purifying a technical iron chloride solution by sele

Details Process for purifying a technical iron chloride solution by sele Process for purifying a technical iron chloride solution by sele

1993-12-21

1995-04-18

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group viib metal

423127, 423164, 423 85, 423 55, 423 66, 210724, 210912, 210726, C22B 4700, C22B 3400, C22B 2100, C22B 2600

Patent

active

054076501

ABSTRACT:
A process for purifying an acidic technical-grade iron chloride solution formed from cyclone dust from the production of TiO.sub.2 in accordance with the chloride process by adjusting the pH with a first neutralizing agent and thereafter introducing the pH adjusted solution in a controlled manner into a solution containing a second neutralizing agent. In this process undesired ions which are to be separated, such as chromium, vanadium, zirconium and/or niobium, precipitate in the form of efficiently filterable hydroxides which can be separated industrially under economical conditions by filtration. The filter cake is non-hazardous and can safely be disposed of by dumping. Calcium carbonate is the preferred neutralizing agent, and the pH adjustment may also advantageously be effected by using scrap iron or by using iron sinters with reduction of any Fe(III) ions before the second neutralization step.

REFERENCES:
patent: 3617562 (1971-11-01), Cywin
patent: 3647414 (1972-03-01), Nilsen
patent: 3655344 (1972-04-01), Mitchell et al.
patent: 3754072 (1973-08-01), Sato et al.
patent: 3867515 (1975-02-01), Bohl et al.
patent: 4540551 (1985-09-01), Bonsack et al.
patent: 4579721 (1986-04-01), Friedman
patent: 4764284 (1988-08-01), Jansen
patent: 4765908 (1988-08-01), Monick et al.
patent: 5248497 (1993-09-01), Hartmann et al.

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