may 31 2013· patent us5439115process for selective flotation of copperleadin a process for a selective flotation of a copperleadzinc sulfide ore the ore is ground andf obtaining an underflow from the flotation separation in step e ; .. nonferrous metal values for the recovery of said metal values and sulfur»more detailed
the platsol process was originally developed in canada for the treatment of flotation sulfide concentrate for polymet mining company in minnesota and subsequently tested on other pgm concentrates. this process involved codissolution of base metals copper and nickel gold and pgms via addition of chloride to the autoclave.
the flotation process collects the sulfurbearing portions of the ore which also contains the valuable metal. first the finely crushed ore is diluted with water and then poured into a tank called a flotation cell. the ground ore and water mixture is called slurry. one percent pine oil or a similar chemical is then added to the slurry in the tank.
sulfur flotation.the superior celltocell design and the principles of subaeration incorporated in suba flotation machines enable the operator to produce the highest possible grade concentrate with excellent recovery. a rougher concentrate is first produced averaging 65% sulphur. this is then subjected to two stages
sulfur flotation process is a typical industry process with complex dynamics. for a sulfur flotation cell the structure of the system model could be derived using firstprinciples and reaction kinetics. however the model parameters cannot be obtained under certain working conditions.
iron ores with a high content of impurities such as sulfur have been processed . pyrrhotite fe1 xs is a kind of common sulde which exists in magnetite ore as an associated mineral with little industrial value. the contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore smelting process.
oxygen has an effect on the flotation process of goldsilver sulfide ore oxidized to different degrees. for example when a factory floatation contains gold and silver sulfide ore the use of a large amount of organic matter and anoxic lake water the flotation effect is not good after mixing and aeration the stable mineralization foam is obtained the recovery rate of gold is increased by 10%.
in the process the sulfurcontaining ore is crushed and then basically heated in a solution at a temperature of about 120'c. the sulphur melts at this temperature and upon cooling small lumps of sulphur form which can be separated by a flotation process.
flotation is a process of separation and concentration based on differences in the physicochemical properties of interfaces. flotation can take place either at a liquidgas a liquidliquid a liquidsolid or a solidgas interface. for example oil flotation takes place on the interface between oil and water. film
the recycling of process water during the production process of sulfide minerals by flotation is now becoming mandatory while concerns about process water chemistry have been raised.
11.21 phosphate rock processing 11.21.1 process description1520 mesh is treated by 2stage flotation. the flotation process uses hydrophilic or hydrophobicthese sources emit particulate matter pm in the form of fine rock dust and sulfur dioxide so2.
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production process was using by the process of grindingflotation after grinding fineness lime dosage sodium sulfide dosage collector and frother dosage were determined by the open test closed circuit experiment was conducted by those optimal conditions identified in the above test the recovery of copper concentrate is 8838% and the .
a process according to claim 1 wherein said sulfur containing species is selected from at least one of the group consisting of thiosulfate sulfides hydrosulfides polysulfides sulfites metabisulfites hydrosulfites dithionates tetrathionates sulfur dioxide and mixtures thereof wherein a cationic part of said sulfur containing species consists of hydrogen sodium potassium ammonium calcium and barium.
in practical sulphur flotation process experiments the air flow rate and feedin conditions are kept at a steady state so as to stabilize the production process. the adjustment of pulp level or froth depth becomes the major manipulating parameter which directly determines flotation performance.
cite this.aba chlorination process for treating metal sulfide flotation concentrates is described. the process involves low temperature chlorination combined with sulfur chloride conversion and selective oxidation to produce nonferrous metal chlorides elemental sulfur and ferric oxide in a threestage fluidized bed reactor.
the flotation method of allocation of iron sulphides of magnetite concentrate and magnetizacijas the products including grinding conditioning with acid ionic sulfurcontaining collector the reactantmodifier and flotation with the release of sulfides in the foam product characterized in that as a reactantmodifier is based composition isoalantolactone alcohols c 8c 10 the general formula rch=cr'withssch
the froth flotation process can produce high recovery and high purity elemental sulphur from very contaminated elemental sulphur or from complex sulphur agglomerate reject byproduct resulting from hot melting processes.
jul 09 2019· 3 summary of the copper mineral flotation process 1 copper minerals such as chalcopyrite and covellite that do not contain iron are similar in floatability. cyanide and lime have weaker inhibition on them so a large amount of lime can be added to inhibit pyrite in the separation of copper and sulfur without seriously affecting the floatability of copper minerals.
the sulfur in the leaching residue can be upgraded to 90% in grade by froth flotation and the sulfur concentration can be followed by sulfur purification and selenium and tellurium removal.
froth flotation is considered to be a very likable physicochemical method to eliminate pyritic sulfur from coal . it has been observed to a be an efficient particle separation process. the process works due to the difference in surface rophobicity of com ponents present in any mixture.
sulfur flotation optimization performance recognition for sulphur flotation processas an important indicator of flotation performance froth texture is believed
the process feeds the cu sulfide concentrate produced through flotation and applies a reverse flotation circuit to separate the moly sulfide from copper sulfides. in this the mos floats and the cus is depressed in a bank of flotation cells. the control devise is also an orp meter typically controlled at between 450 mv and 500 mv.
1 froth flotationfundamental principles. froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry.
froth flotation.all primary sulfide ores of copper sulfides and most concentrates of secondary copper sulfides being chalcocite are subjected to smelting. some vat leach or pressure leach processes exist to solubilise chalcocite concentrates and produce copper cathode from the resulting leachate solution
flotation of coal sludge is carried out in the mode described in example 1 at a flow rate of reagent 300 kg of the composition of the reagent rel. %: cycloalkylcarbonyl 40 naphthalenes 360 benzothiophene 40 polyaromatics cyclic sulfides sulfur in a saturated cycle 350 phenanthrenes 150 triaromatic condensed sulfur compounds 80.
froth flotation processes that include adding a beneficiating amount of a value mineral collector composed of an organic ammonium salt of a sulfurcontaining acid to at least one stage of a froth flotation process to recover value minerals from mineral ore bodies are disclosed herein.