Method for the separation of a mixture of fine particles

Details Method for the separation of a mixture of fine particles Method for the separation of a mixture of fine particles

1978-05-22

1980-03-04

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

423 11, 423 211, 4236585, 209 9, C22B 5900, C01F 1700, C01G 5600, B01D 1100

Patent

active

041917278

ABSTRACT:
A method for the separation of a mixture of fine particles wherein the fraction to be separated has a surface which is more reactive chemically than the remaining fractions by grinding the mixture so that the fraction to be separated has a particle size of less than 50.mu., suspending the ground mixture at a temperature less than 100.degree. C. in a diluted aqueous solution of zirconium oxychloride or zirconium oxynitrate, allowing the solution to settle and decanting the deposited material and then adding a base to the decantate to precipitate the residue therein. This process allows selective separation of the fractions having a more chemically reactive surface without the use of complex equipment and with a minimum use of expensive additives and chemicals.

REFERENCES:
patent: 2459967 (1949-01-01), Schilling
patent: 3480139 (1969-11-01), Fricke et al.

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