Depressant for flotation separation of polymetallic sulphidic or

Details Depressant for flotation separation of polymetallic sulphidic or Depressant for flotation separation of polymetallic sulphidic or

1989-01-03

1991-09-17

Silverman, Stanley S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 5442, 527314, 527400, 252 61, 209167, C08B 3100, B03D 1016

Patent

active

050496123

ABSTRACT:
A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and forthing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing. The depressant consists of a cross-linked starch chemically combined with a polyacrylate and sugar free lignin sulphonate.

REFERENCES:
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patent: 2070076 (1937-02-01), Brown
patent: 2471384 (1949-05-01), Booth
patent: 3912623 (1975-10-01), Buza
patent: 4339331 (1982-07-01), Lin
patent: 4871825 (1989-10-01), Lin
patent: 4891415 (1990-01-01), Lin et al.
patent: 4952329 (1990-08-01), Bulatovic et al.
patent: 4977211 (1990-12-01), Doi et al.

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