Method for increasing the dry residue in reprocessed cyclone...

Details Method for increasing the dry residue in reprocessed cyclone... Method for increasing the dry residue in reprocessed cyclone...

C - Chemistry, Metallurgy

22

B

C22B 34/12 (2006.01) C01G 23/07 (2006.01) C02F 1/52 (2006.01) C02F 1/66 (2006.01) C22B 3/44 (2006.01) C22B 7/00 (2006.01) C22B 7/02 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2438311

During processing of cyclone dust (4) resulting from the chlorination of titanium ore, a disposable filter cake (26) having a dry residue of greater than 40 % (without inert portions serving as a supporting structure), regardless of whether ilmenite, slag or natural or artificial rutile or mixtures thereof were used as a raw material, is obtained when one or a combination of the following method steps is carried out: before increasing to a pH value ranging from 9 to 12 in a neutralization tank (13), a rapid neutralization step (12) is conducted whereby for all volume elements of the liquid, the same precipitation conditions can be maintained in a pH range of 6 to 9; a (preferably anionic) flocculation aid (22) is added before thickening, and; a (preferably cationic) second flocculation aid is mixed into the slurry after thickening. All measures improve the flocculation and render the processing more economical.

Lors de la récupération de poussière séparée par cyclone, produite dans le cadre de la chloration de minerai de titane, on obtient un gâteau de filtre capable de se déposer, qui présente un résidu sec de plus de 40 % (sans fractions inertes servant de supports), que la matière première utilisée soit de l'ilménite, des scories, du rutile naturel ou synthétique ou des mélanges de ces derniers, si une des étapes suivantes ou une combinaison des étapes suivantes est mise en oeuvre : avant d'élever le pH à 9 - 12, un étage de neutralisation rapide est monté en amont, ce qui permet de respecter les mêmes conditions de précipitation pour tous les éléments volumiques du liquide, à un pH de 6 - 9; avant l'épaississement, un adjuvant de floculation (de préférence anionique) est ajouté; après l'épaississement, un adjuvant de floculation (de préférence cationique) est mélangé à la boue. Toutes ces mesures permettent d'améliorer la floculation et de rendre la récupération plus économique.

Affiliated with

Also associated with

Rating

Method for increasing the dry residue in reprocessed cyclone... 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 for increasing the dry residue in reprocessed cyclone..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for increasing the dry residue in reprocessed cyclone... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1617035