Process for removing inorganic gels and incompressible...

Details Process for removing inorganic gels and incompressible... Process for removing inorganic gels and incompressible...

C - Chemistry, Metallurgy

02

F

C02F 1/56 (2006.01) C02F 1/54 (2006.01) C22B 3/22 (2006.01) C22B 34/12 (2006.01)

Patent

CA 2077453

Process for removing inorganic gels and dispersed, particulate incompressible solids from an aqueous slurry having a pH of about -2 to + 3 and a soluble metallic chloride content of about 3 to 50 percent by weight, based on the total weight of the slur- ry, comprising: (a) rapidly and intimately contacting the slurry with an effective amount of a cationic Mannich polyacrylamide having an average molecular weight of about 4-15 million until the desired amount of gel and particulate solids are flocculated, (b) slowly and gently mixing the product of step (a) until floc of the desired size is formed, and (c) removing the floc from the product of step (a).

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