C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
53/354, 53/371
C01F 7/00 (2006.01) C01B 9/08 (2006.01) C01B 33/10 (2006.01) C01B 33/18 (2006.01) C01F 7/50 (2006.01) C01G 1/06 (2006.01) C22B 5/16 (2006.01) C22B 7/02 (2006.01)
Patent
CA 1219452
METHOD FOR SEPARATING AND RECOVERING SILICA, ALUMINUM AND IRON FROM FLY ASH, MINERAL ORES AND MINE TAILINGS by JAMES J. RUSS and JOHN W. SMITH ABSTRACT OF THE DISCLOSURE A method for separating and recovering substantially pure aluminum, iron and silica from fly ash, a by-product of coal combustion, includes reacting the fly ash with aqueous fluosilicic acid and aqueous hydrogen fluoride at temperatures sufficiently high to form aqueous silicon fluoride vapor and fluorides and fluosilicate of aluminum and iron, separating the aluminum and iron fluorides and fluorosilicates from the aqueous silicon fluoride vapor, hydrolizing the silicon fluoride vapor to form silicon dioxide in substantially pure form and hydrogen fluoride, recovering and recycling the hydrogen fluoride for reuse in the process, and separating the aluminum and iron fluorides and fluosilicates from one another, and recovering substantially pure aluminum fluoride, substantially pure iron and other substantially pure metals, by electroplating or otherwise.
443290
Russ James J.
Smith John W.
Borden Ladner Gervais Llp
Hydro Fuels Inc.
LandOfFree
Method for separating and recovering silica, aluminum and... 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 separating and recovering silica, aluminum and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for separating and recovering silica, aluminum and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1315575