Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Selective differentiation
Patent
1978-02-02
1980-09-30
Halper, Robert
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Selective differentiation
209 8, 209 39, 209214, B03B 104
Patent
active
042254264
ABSTRACT:
A method for magnetically separating titaniferous discolorants from a crude kaolin clay. A dispersed aqueous slurry of the clay is formed and ferrimagnetic particles are thereupon spontaneously coflocculated with the titaniferous discolorants by seeding the slurry with a system of said particles. The system includes predominantly sub-micron size particles, and the particles further, have an isoelectric point in relation to that of the titaniferous discolorants to enable the spontaneous coflocculation. The slurry is thereupon passed through a porous ferromagnetic matrix in the presence of a magnetic field, to separate the coflocculated particles and discolorants at the matrix.
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Phys. Rev. Elmore, 309, 310, 1938.
Journal of Applied Physics, Suppl. vol. 32, No. 3, Mar '61, 2355, 2365.
Nott Alan J.
Price William M.
Anglo-American Clays Corporation
Halper Robert
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