7 results about "Beneficiation" patented technology

The invention discloses a benefication method for recovering specularite. The method comprises the processes of primary grinding, grading, primary low intensity magnetic separation, and tailings discarding by primary high intensity magnetic separation; rough concentrate pre-classification by the primary low intensity magnetic separation and the primary high intensity magnetic separation, secondary grinding, secondary low intensity magnetic separation to obtain concentrates, secondary high intensity magnetic separation to obtain concentrates; and selective flocculation desliming secondary conducted on high intensity magnetic separation tailings (middlings), and anionic reverse flotation. The method further comprises the step of arranging a cylindrical slag separating sieve before the primary high intensity magnetic separation. With the advantages that the iron concentrate grade and the iron recovery are high, the loss of granular iron minerals is low, the mineral process flow is short, concentrates and tailings can be obtained in advance and the energy consumption of the benefication is low, the invention can be used not only for selecting specularite ores, but also for selecting weakly magnetic iron minerals, such as hematite, goethite, siderite, limonite, and the like.

The invention relates to a gravity separation-flotation combined beneficiation process for phosphate ores. The gravity separation-flotation combined beneficiation process for phosphate ores comprisesthe following steps: feeding phosphate ore pulp into a three-segment spiral chute gravity separation process to obtain reselected concentrate and reselected tailings; feeding the reselected concentrate into a desilicication reverse flotation process to obtain desilicicated concentrate and desilicicated tailings; feeding the desilicicated concentrate into a magnesium removal reverse flotation process to obtain double reverse concentrate and magnesium removal tailings; feeding the reselected tailings into a thickener to be concentrated to obtain a thick bottom flow; feeding the thick bottom flowinto a direct flotation process to obtain direct flotation concentrate and direct flotation tailings; feeding the direct flotation concentrate into a reverse flotation process to obtain direct and reverse concentrate and reverse flotation tailings; combining the desilicicated tailings, the direct flotation tailings and the reverse flotation tailings to obtain final phosphate tailings; and combining the double reverse concentrate with the direct and reverse concentrate to obtain the final phosphate concentrate. The process has the advantages that the desilicication reverse flotation is free ofslurry interference, the silicate removal efficiency is high, direct flotation is free of coarse grain level interference, the consumption of a reagent is low, the yield of a foamed product floatingin the beneficiation process is low, and a flowage structure is good in stability and high in controllability.

A low energy processed biomass/coal blended compact aggregate composition made with a blending sub-system from a processed organic-carbon-containing feedstock made with a beneficiation sub-system and low energy coal is described. Renewable biomass feedstock passed through a beneficiation sub-system to reduce water content to below at least 20 wt % and an intracellular water-soluble salt reduction of at least 60% from that of unprocessed organic-carbon-containing feedstock on a dry basis. The processed feedstock is blended with sized low energy coal in a blending sub-system to form a blended aggregate that comprises at least 10 wt % of a coal having an energy density of less than 21 MMBTU/ton (24 GJ/MT) and at least 10 wt % of a processed biomass comprising a processed organic-carbon-containing feedstock with characteristics that include an energy density of at least 17 MMBTU/ton (20 GJ/MT) and a water-soluble intracellular salt content that is decreased more than 60 wt % on a dry basis for the processed organic-carbon-containing feedstock from that of unprocessed organic-carbon-containing feedstock.

The invention discloses an automatic ore feeding device for magnetic separators and an automatic ore feeding control method. A plurality of ore feeding openings in one-to-one correspondence with the parallel magnetic separators are formed in an ore distribution box, and the ore feeding openings are used for ore feeding of the magnetic separators correspondingly. A control unit is electrically connected with an ore feeding pump. The working current value of the ore feeding pump can be obtained, and the working current value of the ore feeding pump reflects the circulation amount of the ore dressing process. The control unit is electrically connected with a lifting driving mechanism and used for controlling the lifting displacement of the lifting driving mechanism. The lifting driving mechanism drives material plugs to move up and down in the ore distribution box, and therefore the opening and closing state and the opening size of each ore feeding opening are changed. According to the automatic ore feeding device for the magnetic separators and the automatic ore feeding control method, the on-site flow quantity change condition can be automatically detected, the automatic adjustmentof the ore feeding quantity of the magnetic separators, the start and stop of the magnetic separators and other operations are realized according to the flow quantity change condition, the convenienceof reasonably operating the number of the magnetic separators is improved, the frequency of climbing an ore distribution box platform of the magnetic separators by on-site operators is reduced, the labor intensity of the operators is reduced, and operation safety is ensured.

The invention relates to the technical field of mineral separation, in particular to a comprehensive utilization method of pegmatite containing tantalum, niobium, cassiterite, feldspar and spodumene. The comprehensive utilization method of the pegmatite comprises the following steps: crushing and grinding raw ore, and then carrying out flotation, magnetic separation, reselection, concentration, dehydration, precipitation and clarification combined mineral separation process, so that valuable mineral resources such as mica, tantalum-niobium ore, cassiterite, feldspar, spodumene, building material sand and the like contained in the pegmatite can be recycled; the method has the advantages that the method is simple in process, high-quality recovery of spodumene concentrate and feldspar concentrate products and the like can be achieved, the comprehensive recovery utilization rate is high, nearly zero emission of tailings and tail water can be achieved, the method is suitable for large-scale production and application, and stable beneficiation indexes can be kept.

The invention discloses matte glaze prepared from gold ore tailing powder and processing equipment of the matte glaze. A processing method comprises the following steps: step 1, filtering and sortingore pulp by adopting gold ore tailing preparation equipment, and carrying out rapid separation of the ore pulp in a gold washing chute; step 2, filtering and cleaning the ore pulp obtained in the step1 multiple times to obtain a uniformly-mixed mixture; step 3, introducing the obtained uniformly-mixed mixture into a drying furnace through a feeding machine and a discharging pipe, and carrying outdrying; etc. According to the matte glaze prepared from the gold ore tailing powder and processing equipment of the matte glaze in the invention, the gold washing chute is used for realizing the effect of separating ore pulp; and meanwhile, a slurry pushing device is arranged on the gold washing chute, so the effect of automatic pushing and separating is achieved when deposited slurry on the goldwashing chute is cleaned, and thus, manpower is effectively saved, potential safety hazards are reduced, working efficiency is further improved, and the preparation efficiency of the matte glaze is improved.