66results about How to "Good beneficiation index" patented technology

The invention discloses an ore-selecting method of difficultly-selected copper zinc sulphur ore applied to ultra-fine grain embedded high-sulphur ore with high secondary copper content, including: performing floatation to the intermediate products of copper-zinc mixed rough concentration, copper rough concentration, floating copper zinc-restricting slot flotation products, and grinding ores in segments; properly adding combined inhibitor; adding different combined inhibitors during flotation to effectively separate copper zinc ore, thereby acquiring high-quality copper and zinc concentrate products. This invention is in no need of adding cyanide poisonous medicament, such as potassuim cyanide so as to reduce environment pollution, achieves effective and synthesized recycling and utilization of difficultly-selected ore, enhances utilization rate of resource, improves production index by 17.37% in comparison with that of copper concentrate tenor, reduces zinc content by 5.12%-18.12%, improves zinc concentrate tenor by 6.51%, reduces Cu content by 4.44%, respectively enhances recovery rate of copper/zinc concentrate by more than 10%, and realizes excellent ore selecting index as well.

The invention provides an ilmenite beneficiation method and equipment, and is suitable for comprehensive utilization of low grade ilmenite resources. The method and the equipment provided by the invention can be used for separating materials by fully using three kinds of physical differences of useful components in ilmenite magnetic iron and ferrotitanium and useless gangues, such as magnetism, density and surface hydrophilicity, as well as the property of the stage degree of dissociation. In the whole separating process, by using a magnetic-gravity separation-flotation combined process, the magnetic iron which is the strongest in magnetism is separated by using a magnetic separating method firstly, and then the ferrotitanium is selected by using a method of gravity separation combined with strong magnetic combined flotation. In the whole separating process, a graded ore grinding and graded beneficiation method is adopted, and in the process of separating the ferrotitanium, ore is secondarily ground, so that the ferrotitanium containing part of impurities after strong magnetism in the first stage is further dissociated, and therefore, relatively good beneficiation indexes are obtained.

The method discloses a method for selecting gold from gold ore leaching residue. The method comprises the following steps: ore grinding, grid screening, roughing, scavenging, first selection, second selection and third selection. Active carbon is added during ore grinding, gold loaded carbon with higher gold content is firstly screened by adopting a 40-mesh grid screen at a ball-milling ore discharge port, then an inhibitor, a collecting agent and a foaming agent are added during the floatation process, and finally size mixing and stirring are carried out for roughing floatation work. The inhibitor is sodium fluosilicate, the collecting agent is Ammonium dibutyl dithiophosphate, and the foaming agent is terpenic oil. According to the method, through reasonable allocation of ore grinding and grid screening, the gold grade of the gold loaded carbon reaches to 70-80 g/T, the gold grade of floatation gold concentrate reaches to 15-20 g/T, the recovery rate of the gold loaded carbon reaches to 5-6%, the recovery rate of floatation gold reaches to 50-55%, and the total recovery rate of gold reaches to 55-61%. The ore dressing method is simple in technology and easy to operate on site.

An electric level controlled floatation technology for lead zinc sulfuride ore features that in the step of floating lead, the electric level of ore sludge is regulated to 140-210 mv by adding lime into grinder while the capturer is added, and in the step of floating zinc the electric level of ore sledge is regulated to 150-170 mv by adding lime to lead tailings while adding capturer. Its odvantage is high recovery rate.

Structure of the testing device is as following: blower fan, gas generator, separator and reaction furnace are connected to each other through pipe; adjustable valve and switch valve are setup at pipe connected between the gas generator and the separator; material receiver is at lower part of the separator; the gas generator and reaction furnace are connected through pipe with switch valve; being setup at upper, middle, and lower part of the reaction furnace, the test points are in use for thermocouple to measure reduction gas in the furnace, temperature in furnace chamber and temperature of tail gas; through pipe with control valve, the bottom part of the reaction furnace is connected to the blower fan, and test points are in use for measuring flux of coal gas and component. Features are: low energy consumption; the testing device can be added to furnace and demount from furnace quickly, measuring reaction change velocity from weak magnetism to strong magnetism, etc.

The invention discloses a treatment chemical for lead-zinc flotation tailing wastewater, wherein the chemical comprises, in percentage by weight, 80-90% of carbonate, 9-19% of phosphate and 0.5-1% of non-ionic polyacrylamide; and the treatment chemical is suitable for treating lead-zinc flotation tailing wastewater with suspended solids, highly-free calcium oxide, high pH, high-concentration heavy metal ions, and over-standard COD (chemical oxygen demand) and BOD (biochemical oxygen demand). The new chemical has the multi-functions of rapidly removing calcium, removing suspended matters and precipitates, i.e., heavy metal ions and the like, as well as is large in the particle size of precipitate particles and complete in precipitation. Moreover, operation is simple and cost is low by using the chemical.

The invention relates to an ore dressing method of high-muddy high-alkalinity gangue low-grade refractory copper oxide ores, which belongs to the technical field of ore dressing. The ore dressing method comprises the following steps: making copper oxide crude ore into pulp, wherein the concentration of the ore pulp is 20 to 28 percent; uniformly stirring the ore pulp, performing low intensity magnetic separation to remove high-magnetic minerals, thus obtaining low intensity magnetic separation tailings, and performing high-gradient high intensity magnetic separation pre-concentration and tailings discarding on the low intensity magnetic separation tailings, thus obtaining high intensity magnetic separation rough concentrate and high intensity magnetic separation tailings; grinding the highintensity magnetic separation tailings, then performing oxygen-sulfur mixed floatation, thus obtaining oxygen-sulfur mixed concentrate and oxygen-sulfur mixed scavenging tailings; and performing wetleaching on the oxygen-sulfur mixed scavenging tailings. By adopting the method, ore dressing indexes of the high-muddy and high-alkalinity gangue and low-grade copper oxide ores can be favorably increased, the total recovery rate of the copper is greater than or equal to 89 percent, the adaptability is high, and the industrialized implementation is facilitated.

A beneficiation method for ilmenite is characterized by comprising the following steps that firstly, a high-pressure roller mill conducts pulverized grinding to -3 mm, and iron selecting is conducted; secondly, iron selecting tailings are ground to P80 0.140 mm; thirdly, strong magnetism concentrates are obtained through strong magnetic separation enrichment, and the magnetic field intensity ranges from 0.6 T to 0.7 T; fourthly, the strong magnetism concentrates are ground to P80 0.070 mm; fifthly, after being subjected to desulfuration, the strong magnetism concentrates are subjected to primary roughing, four-time fine selecting and primary scavenging, flotation titanium concentrates are obtained, and SYR3 is adopted as a collecting agent of the ilmenite; and sixthly, titanium concentrates obtained through flotation are subjected to acid leaching, final titanium concentrates are obtained, the immersion liquid is 10% sulfuric acid, the titanium concentrates obtained through flotation are subjected to acid leaching for 3 h at the temperature approximately ranging from 80 DEG C to 85 DEG C, the liquid-solid ratio is 7:1, the titanium concentrates are obtained through three times of filtering and washing, and the qualified titanium concentrates in which the content of TiO2 is larger than 45% are obtained.

The invention provides a low grade precious metal ore negative pressure multistage enrichment technology and a device. After coarse crushing and fine grinding, ore raw material mostly becomes powder material, in the fine grinding and screening process, non-metallic particles, suspended in the air, of the powder material can be recycled under the effect of confined space negative pressure, residual powder particles containing large density metal and nonmetal are mixed with water after sedimentation, and components large in density of precious metal and nonmetal mixture are further separated under the effect of a hydrocyclone. According to multistage negative pressure dry and wet mixing method separation technology, the low grade precious metal enrichment purpose is achieved, low grade precious metal sources are enabled to be fully recycled and reused, and water and power sources are saved, and precious metal source waste is reduced.

The invention relates to an apatite low-temperature flotation collector and a preparation method thereof. The apatite low-temperature flotation collector comprises the following components in parts byweight: 35-55 parts of oxidized paraffin soap, 20-40 parts of soybean oil fatty acid soap and 20-30 parts of sodium fatty acid methyl ester sulfonate. The apatite low-temperature flotation collectordisclosed by the invention can realize effective flotation under the low-temperature condition of 5 DEG C. The apatite low-temperature flotation collector has good biodegradability, and can keep the COD content (less than or equal to 50 mg/L) in flotation tailing water at a low level.

The invention relates to the technology of flotation, and particularly relates to a flotation process of ilmenite or bastnaesite. According to the process disclosed by the invention, a using amount ofa nipagin hydroximic acid collecting agent is more than or equal to 15g/t, and the granularity of ores is minus 0.074mm, occupying 60 percent to 100 percent; lime, sodium hydroxide or sodium carbonate is added to regulate pH of ore pulp to reach 4 to 12; water glass is an inhibitor, and a using amount of the inhibitor is 200g/t to 2000g/t; and MIBC (Methyl Isobutyl Carbinol) is a foaming agent, ausing amount of the MIBC is 10mg/L to 20mg/L, and the acting time is about 1 minute. The process disclosed by the invention is applied to flotation and refractory of fine-particle oxidized ores, andcan improve the flotation effect and mineral processing indexes. According to the process disclosed by the invention, medicament is reduced, and the mineral processing cost is reduced.

The invention relates to the field of flotation, in particular to nipalgin hydroximic acid as well as a preparation method thereof and application thereof in tungsten ore flotation. The preparation method of the nipalgin hydroximic acid comprises the following four steps: preparing raw materials; preparing hydroxylamine hydrochloride and a sodium hydroxide solution; preparing a nipalgin hydroximicacid crude product; purifying the nipalgin hydroximic acid. The nipalgin hydroximic acid provided by the invention has a higher collecting ability, is suitable for flotation of refractory fine-particle oxidized ore, can improve the flotation effect and indexes of mineral dressing, saves reagents and lowers the mineral dressing cost.

A magnet device comprises a magnetic conductive layer and a magnet layer, wherein the magnet layer is attached to the surface of the magnetic conductive layer and composed of a plurality of first magnet parts and a plurality of second magnet parts; each first magnet part comprises first main magnet units and a first auxiliary magnet unit; each first main magnet unit is formed by arranging first main magnet blocks in the second direction perpendicular to the first direction, and the polarities of every two adjacent magnetic poles of the first main magnet blocks are opposite; each first auxiliary magnet unit is formed by arranging first auxiliary magnet blocks in the second direction in the mode that the polarities of every two adjacent magnetic poles of the first auxiliary magnet blocks are opposite; each second magnet part comprises second main magnet units and a second auxiliary magnet unit; the magnetization direction of the first main magnet blocks and the magnetization direction of second main magnet blocks are parallel, and the magnetization direction of the first auxiliary magnet blocks and the magnetization direction of second auxiliary magnet blocks are perpendicular to the magnetization direction of the first main magnet blocks and the magnetization direction of the second main magnet blocks; and according to the arranging sequence in the second direction, the polarities of the magnetic poles of the first main magnet blocks and the second main magnet blocks in the same serial number are opposite, and the polarities of the magnetic poles of the first auxiliary magnet blocks and the second auxiliary magnet blocks in the same serial number are opposite.