Compositions – Physical separation agents – Froth-flotation or differential adherence
Patent
1976-08-04
1978-09-12
Rutledge, L. Dewayne
Compositions
Physical separation agents
Froth-flotation or differential adherence
252 60, 252549, 252551, 252552, 106 88, 106111, C09K 300
Patent
active
041136381
ABSTRACT:
An improved gypsum dispersion frothing composition is presented comprised of a first component which is a neutralized sulfonic acid or neutralized sulfuric acid ester and a second component which is a neutralized dipropyl benzene sulfonate or a mixture of neutralized alkyl benzene sulfonates containing at least 50% neutralized dipropyl benzene sulfonate. The preferred member of the first component is neutralized alkyl benzene sulfonates having 10 to 14 alkyl carbon atoms, and the preferred second component is neutralized diisopropyl benzene sulfonate. The preferred neutralizing agents are sodium, ammonium ion, or triethanolamine. The frothing composition is preferably used at a concentration of 0.01 to 0.1 parts per 100 parts of gypsum.
REFERENCES:
patent: 2318574 (1943-05-01), Harter
patent: 3231504 (1966-01-01), Marion et al.
patent: 3372040 (1968-03-01), Ware
patent: 3577248 (1971-05-01), Doan et al.
patent: 3725090 (1973-04-01), Lyass et al.
patent: 3912528 (1975-10-01), Doan et al.
patent: 3926650 (1975-12-01), Lange et al.
"Kirk-Othmer Encyclopedia of Chemical Technology", John Wiley & Sons, Inc., 2nd edition, vol. 19, pp. 507-532.
Atlantic Richfield Company
Reap Coleman R.
Rutledge L. Dewayne
Sheehan John P.
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