A collector composition and process to treat ores with a collector composition that comprises a nitrile group-containing compound of the formula (I)

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wherein R is a saturated or unsaturated, linear or branched, hydrocarbon group containing 8 to 26 carbon atoms,

##STR00002##

R is a saturated or unsaturated, linear or branched, hydrocarbon group containing 1 to 26 carbon atoms or a hydrogen atom or (-(D).sub.j-C.sub.nH.sub.2nCN) group or R-((A).sub.m-(B)).sub.x group, A is (OCH.sub.2CH.sub.2); (OCH(CH.sub.3)CH.sub.2) or (OCH(CH.sub.2CH.sub.3)CH.sub.2), B is (OC.sub.pH.sub.2p), D is (CH.sub.2CH.sub.2O); (CH(CH.sub.3)CH.sub.2O) or (CH(CH.sub.2CH.sub.3)CH.sub.2O), x is 0 or 1, R is hydrocarbon group containing 1 to 4 carbon atoms, Y is halide or methylsulfate, m, j are each independently an integer of 0-5, R is a saturated or unsaturated, linear or branched, hydrocarbon group containing 1 to 26 carbon atoms, and n and p are each independently an integer of 1 to 5.

A copper/molybdenum separation system uses sea water in the roughing circuit and desalinated water in cleaning circuit. In both roughing circuit and cleaning circuit, hydrophobic engineered media are used to recover the mineral particles of interest. The cleaning circuit includes a molybdenum loading stage configured to contact the conditioned pulp with the engineered media in an agitated reaction chamber, and load the hydrophobic molybdenite on the engineered media.

A flotation arrangement for treating mineral ore particles suspended in slurry. The arrangement includes a primary line including at least two primary flotation cells, a first secondary line, and a second secondary line downstream of the first secondary line. In the arrangement, underflow from a secondary line is arranged to flow to the last of the at least one primary flotation cells from which the primary overflow was received, or to a primary flotation cell downstream of the last of the at least one primary flotation cells from which the primary overflow was received. The disclosure further relates a use of a flotation arrangement, to a flotation plant and to a flotation method.

A flotation arrangement for treating mineral ore particles suspended in slurry includes a primary flotation line with a rougher part including at least two rougher primary flotation cells and a scavenger part including at least two scavenger primary flotation cells, and a secondary flotation line including at least two secondary flotation cells. A first secondary flotation cell is arranged to receive primary overflow from the at least one rougher primary flotation cell, and a further secondary flotation cell to receive primary overflow from the at least one further rougher primary flotation cell. The further secondary flotation cell is arranged in fluid communication with a previous secondary flotation cell, and underflow from the first secondary flotation cell is arranged to flow into the further secondary flotation cell, or arranged to be combined with secondary underflow of the further secondary flotation cell.

A process and a plant for recovering valuable material in the form of gold and/or copper from sulphide ore systems that includes an Accurate Rock Breakage System (ARBS) circuit.

The present invention is directed to methods that can be used in the enrichment of metal sulfide ores in desired minerals in cases where the ores have sulfide-containing gangues. The method involves adding an oxidant to slurries prepared from the ores during, or immediately prior to froth flotation.

The present embodiments generally relate to a technology for improving Cu/Mo grade by the addition of cationic polymers as selective depressants for acid insoluble matters, e.g., silicates and/or clays, in the flotation circuit. Various types of cationic polymers are demonstrated to be effective depressants including polyamine, polyDADMAC, and cationic polyacrylamide. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more cationic polymer depressants.

The present invention relates to an azolethione flotation collector and application thereof. According to the application, an azolethione compound such as a 1,3,4-thiadiazole-2-thione compound, a 1,3,4-oxadiazole-2-thione compound, a 1,2,4-triazole-3-thione compound or a 1,2,4,5-tetrazole-3-thione compound is used as a mineral flotation collector to be applied to ores containing copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals to realize flotation recovery of valuable metal minerals. Compared with common flotation collectors in the existing technologies, the flotation collector of the present invention can effectively improve enrichment and recovery of copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals.

A method for recovering at least one precious metal from an aqueous solution containing the metal and particularly to recovery of silver and optionally one or more other precious metals from overflow of a sedimentation unit such as a thickener, a clarifier or a pond includes subjecting the aqueous solution to a micro and/or nanobubble flotation, wherein the pH of the aqueous solution is at most 1.5.

A flotation method for recovering valuable metal containing ore particles from ore particles suspended in slurry is disclosed. In the method, the slurry is treated in an at least one overflow flotation cell and the valuable metal containing ore particles are recovered by conducting the continuous upwards flow of slurry out of the at least one overflow flotation cell as slurry overflow. At least part of the slurry overflow is conducted to a further treatment step in a treatment system.