US 12,168,237 B2
Collector composition containing biodegradable compound and process for treating siliceous ores
Natalija Smolko Schwarzmayr, Hjälteby (SE); Charlotte Ewa Karin Gustafsson, Frölunda (SE); and Jan Olof Gustafsson, Kungälv (SE)
Assigned to NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
Appl. No. 17/250,264
Filed by NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
PCT Filed Jul. 1, 2019, PCT No. PCT/EP2019/067538
§ 371(c)(1), (2) Date Dec. 22, 2020,
PCT Pub. No. WO2020/007773, PCT Pub. Date Jan. 9, 2020.
Claims priority of application No. 18181479 (EP), filed on Jul. 3, 2018.
Prior Publication US 2021/0121894 A1, Apr. 29, 2021
Int. Cl. B03D 1/01 (2006.01); B03D 1/004 (2006.01)
CPC B03D 1/0043 (2013.01) [B03D 1/01 (2013.01); B03D 1/011 (2013.01); B03D 2201/02 (2013.01); B03D 2203/04 (2013.01); B03D 2203/06 (2013.01)] 20 Claims
 
1. Collector composition comprising
(i) as a primary collector the compound of a formula (I)

OG Complex Work Unit Chemistry
wherein R is an alkyl group comprising between about 5 and about 16 carbon atoms that may be branched or linear, k is a value of about 1 to about 3, m is an integer from about 0 to about 25, each A independently is —CH2-CH2- or —CH2CH(CH3)- or —CH2-CH(CH2-CH3)-, n is an integer of at least about 3 and at most about 8, and wherein X is an anion derivable from deprotonating a Brønsted-Lowry acid; and
(ii) a second compound chosen from other primary collectors, secondary collectors, depressants, frothers, and solvents,
wherein the other primary collector is chosen from quaternary ammonium cationic surfactants different from the above formula (I) and amine-functional surfactants;
wherein the secondary collector is chosen from nonionic and anionic surfactants,
wherein the nonionic surfactants are chosen from unbranched and branched fatty alcohols, alkoxylated fatty alcohols, alkylamide ethoxylates, and alkyl diethanol amide ethoxylates,
wherein the anionic surfactants are chosen from fatty acids, sulphonated fatty acid, acylamidocarboxylates, acylestercarboxylates, alkylphosphates, alkylpyrophosphates, alkylsulphates, and alkylsulphonates;
wherein the depressant is chosen from polysaccharides and derivatives thereof, and polyacrylamide polymers;
wherein the frother is chosen from MIBC and propoxylated and ethoxylated C6-C10 alcohols, and
wherein the solvent is chosen from C1-C5 alcohols optionally ethoxylated and/or propoxylated, provided that the second compound is not a compound of the formula ROH or R—(O-A) m-OH wherein R and m are the same as in the compound of formula (I).