摘要:
A family of amine mining collectors that uses alkoxylates allows for the easy adjustment of solubility and molecular weight useful because anionic and cationic mineral collectors require such varying degrees of solubility and molecular weight. The family of the present invention allows for the optimization of both parameters and an increase in collector efficiency.
摘要:
The invention concerns a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RC(O)N(Z—O—X—NH2)2 (Ia); RC(O)N(Z—O—X—NH2)2H+ Y− (Ib); in which X is an aliphatic alkylene group containing 2 to 6 carbon atoms; Z is an aliphatic alkylene group containing 2 to 6 carbon atoms; Y− is an anion; and R is a saturated or unsaturated, linear or branched, aliphatic or aromatic moiety having between 7 and 23 carbon atoms. The invention also relates to the novel compounds according to formulae (Ia) and (Ib), compositions comprising said compounds and the use of compounds and formulations as collectors for enriching of iron mineral.
摘要:
The present invention concerns a process for manufacturing white pigment containing products. The white pigment containing products are obtained from at least one white pigment and impurities containing material via froth flotation.
摘要:
The present invention relates to a process for concentration of silicate-containing minerals and ores by froth flotation, in particular to a reverse flotation process, in the presence of a finely dispersed collecting agent characterized by a specific droplet size distribution.
摘要:
The invention relates to a collector for the separation by flotation of carbonates contained in non-sulfurous minerals, particularly phosphoric rock, comprising at least one phosphoric ester of formula (I) wherein, R1 represents H, CH3 or C2H5, R2 represents a linear or branched alkyl or alkenyl group containing between 4 and 10 carbon atoms, R3 represents H or a suitable cation, selected from an alkali metal, an alkaline earth metal, ammonium, alkyl ammonium, alkanol ammonium or glucammonium, k represents a number comprised between 1 and 2, and n represents a number comprised between 0 and 4.
摘要:
The present invention relates to fatty amido amine collectors for the beneficiation by flotation of aqueous suspensions of ores, the use of said fatty amido-amine collectors in flotation processes for the beneficiation of ores, more particularly in reverse flotation processes for the beneficiation of silicates containing-ores.
摘要:
The invention concerns a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RC(O)N(Z—O—X-NH2)2 (Ia); RC(O)N(Z-O-X-NH2)2H+ Y− (Ib); in which X is an aliphatic alkylene group containing 2 to 6 carbon atoms; Z is an aliphatic alkylene group containing 2 to 6 carbon atoms; Y− is an anion; and R is a saturated or unsaturated, linear or branched, aliphatic or aromatic moiety having between 7 and 23 carbon atoms. The invention also relates to the novel compounds according to formulae (Ia) and (Ib), compositions comprising said compounds and the use of compounds and formulations as collectors for enriching of iron mineral.
摘要:
The present disclosure provides a froth flotation composition including a cycloaliphatic alcohol and a reaction product of the cycloaliphatic alcohol and propylene oxide. The froth flotation composition is especially suited for use in ore and coal flotation processes.
摘要:
Glycol ether compositions useful for metal recovery by froth flotation and processes for making the compositions are disclosed. In one process, dipropylene glycol methyl ether (DPM) is propoxylated to give a composition comprising 4 to 15 wt. % of DPM and at least 20 wt. % of tripropylene glycol methyl ether (TPM). In another process, the glycol ether composition is made from a distillation residue which comprises DPM, TPM, and a basic catalyst. Extraction of the residue with water to remove some of the basic catalyst is followed by propoxylated to give a composition which comprises less than 15 wt. % of DPM, at least 20 wt. % of TPM, and one or more PO-based glycols. In comparative froth tests, glycol ether compositions of the invention meet or exceed the performance of commercial frothers.
摘要:
A mineral beneficiating reagent containing an alkyl hydroxamic acid or salt thereof and a nonionic surfactant. The alkyl hydroxamic acid or a salt thereof is represented by the formula: R—C(═O)N(R″)—OM, wherein R is linear or branched C2-C18 alkyl, linear or branched C2-C18 alkenyl, C6-C20 aryl or substituted aryl, C7-C26 aralkyl or substituted aralkyl; R″ is H, C1-C12 alkyl or aralkyl; M is hydrogen, an alkali metal, or an ammonium cation represented by N+(A,B,C,D) wherein each of A,B,C,D, respectively, are H or C1-C6 alkyl or benzyl radicals. The nonionic surfactant can be any known nonionic surfactant, including but not limited ethoxylated alcohols, esters, ethoxylated acids, ethoxylated (alkyl) phenols, alcanolamides, polyethylene oxide copolymers and mixtures thereof.