Showing papers on "Beneficiation published in 1978"

Process for scavenging iron from tailings produced by flotation beneficiation and for increasing iron ore recovery

Abstract: There is disclosed a process for scavenging iron from tailings produced by the flotation beneficiation of iron ore This process includes the step of scavenging the flotation tailings using wet high-intensity magnetic separation (WHIMS) There is also disclosed a process for increasing the recovery of iron ore in a flotation beneficiation process This iron ore recovery process includes the steps of feeding the magnetic concentrate produced by the scavenging process to a flotation system and then carrying out an additional flotation step

Process for beneficiation of phosphate and iron ores

Abstract: Froth flotation of phosphate and iron ores is improved in recovery when a collector combination of a fatty acid and an alkylamidoalkyl monoester of a sulfosuccinic acid or a salt thereof is employed.

Flotation separation of glass from a mixture of comminuted inorganic materials using hydrocarbon sulfonates

Abstract: Particulate glass values contained in the final inorganic fraction from comminuted municipal wastes and having the particle size below 10 mesh, preferably between about 325 to about 20 mesh, are recovered by froth flotation by activating the glass surface with a bi or trivalent metal ion and using as the beneficiation reagent a water compatible sulfonated hydrocarbon.

Galvanic cell employing copper ore active cathode materials

Abstract: A galvanic cell wherein the active cathode material is a simple or complex copper sulfide constituent of copper ore, copper concentrate, a matte or other intermediate material in the ore beneficiation or metal winning or refining process.

Beneficiation method of direct iron making process

Abstract: PURPOSE:To upgrade low grade ore and reduce pellet production cost by reduction roasting hematite ore with the reducing components contained in exhaust gas of a reducing furnace to change the same to magnetite ore, crushing the ore and magnetically separating the same.

Beneficiation of metallic ores by froth flotation using polyhydroxy amine depressants

Abstract: Beneficiation of metallic ores by froth flotation using polyhydroxy amines depressants for gangue material, such as silica, silicates, carbonates, sulfates, phosphates to obtain pure concentrates of desired metal values with adequate collectors; comprises, adding to a water suspension of finely divided ore of polyhydroxy amine to depress the said gangue material in the presence of an adequate collector for the recovering of the desired metal value.

Fluorinated hydrocarbons in coal mining and beneficiation

Abstract: A method of using fluorinated hydrocarbons as a carrier to convey mined coal to a separation station. The carrier acts as a parting liquid for beneficiating the coal. The carrier is recovered and returned to the mine for conveying more coal. Some of the returned carrier may be used at the mining face as a dust suppressant. Ash from burning the coal may be returned with the carrier where it is disposed of as waste material.

Process for beneficiation of titanium ores

Abstract: OF THE DISCLOSURE: Invention Patent of "PROCESS FOR BENEFICIATION OF TITANIUM ORES" which basically consists of the removal of impurities contained in titanium ores, in which such impurities appear as oxides and cannot be eliminated by conventional mechanical processes for ore concentration. The process includes scrubbing, desliming; electromagnetic separation of the thick fraction for the removal of magnetite and decrease of the iron content, grinding of the non-magnetic fraction and its flotation for removal of part of the phosphates, calcining and reduction of the concentrate and both magnetic and electro-static separation. The latter is carried out in stages which eliminate the impurities and make it possible to obtain a pre-concentrate, which undergoes another electrostatic separa-tion in order to obtain a final concentrate with a high TiO2 content and a middling concentrate which is recycled to the system.

Method for the beneficiation of ore

Abstract: Severed metal bearing ore is placed in a vessel having a water inlet at the bottom and an outlet at the top. A propeller causes water to flow upwardly through the vessel and to be discharged through the outlet carrying gangue with it. Concentrate, which is heavier because it contains the metal to be recovered, does not rise to the level of the outlet and therefore remains in the vessel. To achieve better vertical separation of the gangue and concentrate, a horizontal screen is positioned above the propeller to equalize pressure and inhibit rotational flow in the upper portion of the vessel.

Phosphate beneficiation process

Abstract: In the beneficiation of phosphate ore by the flotation of the siliceous material, the utilization of a condensate of a polyethylene polyamine, having from 10 to 24 carbon atoms, with a fatty acid, fatty acid ester or a fatty acid and an alkylolamine improves the separation of phosphate from silica. This improvement is especially great in the presence of unreacted fatty acid. Moreover, this condensate is more readily dispersed in the flotation medium than the condensate of diethylenetriamine with fatty acid employed by the prior art.

Magnesite beneficiation in heavy suspensions

Abstract: A department for magnesite beneficiation in heavy suspensions with an output capacity of 1 million tons/ yr has come on stream at the Magnezit Combine.

Beneficiation process for oxidized iron ore

Abstract: A chlorine source is provided in a reactor in combination with a ground oxidized ore and a particulate carbonaceous reductant. The amount of chlorine provided is significantly less than the stoichiometric requirements for reaction with the total iron content of the ore; the amount of the reductant is greater than that required to effect the reduction of the total iron content of the ore. The reactor is operative to retain the reaction gases in intimate contact with the feedstock mixture without significant dilution of said gases in order to provide a reducing atmosphere. The mixture is indirectly heated to a temperature below 950° C., preferably in the range 700°-950° C., and the mixture is retained in the reactor for a period of time sufficient to cause the major portion of the iron to be transported out of the ore and to be deposited on or near the solid reductant and form discrete metal particles. These particles can be separated from the gangue minerals, for example by magnetic separation, to provide a high yield-high quality iron concentrate.