Method of refining ferrous ion-containing acid solution

Details Method of refining ferrous ion-containing acid solution Method of refining ferrous ion-containing acid solution

C - Chemistry, Metallurgy

01

G

23/267, 53/377

C01G 49/04 (2006.01) C01G 49/06 (2006.01) C23G 1/36 (2006.01)

Patent

CA 1337504

According to the subject method of refining a ferrous ion-containing acid solution, a metal selected from a group including A?, Cr, V, B, and Zn or an acid solution of that metal is added to a ferrous ion- containing acid solution, such as an acid solution which remains after steel is washed with an acid. The pH value of the acid solution is controlled to be within the range of 3.5 to 6 by adding an alkali liquid to the acid solution, whereby a hydroxide salt of the added metal is produced in the acid solution and the impuri- ties in the acid solution are captured by the produced hydroxide salt. As a result, the impurities can be eliminated from the acid solution such that the Si com- ponent (e.g., SiO2) content in the acid solution is within the range of 2 to 3 ppm or less. Since the con- tent of the other impurities such as A?, Ti, and Cr can also be reduced, a high-purity iron oxide can be obtained from the resultant acid solution.

585520

Affiliated with

Also associated with

Rating

Method of refining ferrous ion-containing acid solution does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of refining ferrous ion-containing acid solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of refining ferrous ion-containing acid solution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1264974