Process for the froth flotation of calcium...

Details Process for the froth flotation of calcium... Process for the froth flotation of calcium...

C - Chemistry, Metallurgy

07

C

260/517.1, 260/5

C07C 61/00 (2006.01) B03B 1/04 (2006.01) B03D 1/00 (2006.01) B03D 1/02 (2006.01) B03D 1/06 (2006.01) C01B 25/01 (2006.01) C11D 1/88 (2006.01)

Patent

CA 1129437

ABSTRACT OF THE DISCLOSURE A process for the froth flotation of calcium phosphate- containing minerals is provided which comprises carrying out the flotation in the presence of an amphoteric flotation agent having the general formula: Image wherein: R is a hydrocarbon group having from about seven to about twenty-four carbon atoms; A is an oxyalkylene group having from two to about four carbon atoms; R1 is selected from the group consisting of hydrogen and hydrocarbon groups having from one to about four carbon atoms; Y-is selected from the group consisting of COO- and SO3-; n is a number from 0 to 1; p is a number from 0 to 5; q is a number from 1 to 2; and salts thereof.

322738

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