C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
23/88
C01F 7/74 (2006.01) C01F 7/00 (2006.01) C02F 1/52 (2006.01)
Patent
CA 2001063
The present invention relates to a process for the preparation of a basic poly aluminum sulphate solution (PAS) having the following formula: [AlA(OH)B(SO4)C(H2O)E]n in which n is a positive integer; A is 1.0; B ranges from 0.75 - 2.0; C ranges from 0.5 - 1.12: and E is larger than 4 when the product is in aqueous form, wherein the basicity of said basic poly aluminum sulphate solution is defined as B/3A X 100 and said basicity is 25-66% and wherein B + 2C = 3. The process comprises reacting aluminum sulphate solution with a suitable alkali metal aluminate under high shear mixing and recovering the desired product.
Haase Dieter
Spiratos Nelu
Inc. Du Canada Eaglebrook Inc. Of Canada/eaglebrook
Kirby Eades Gale Baker
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