30results about How to "The beneficiation process is simple" patented technology

The invention discloses a magnet-flotation combined beneficiation technology of spodumene. Spodumene ore is subjected to smashing and grinding. Ore pulp after grinding is sequentially subjected to lowintensity magnetic separation and high intensity magnetic separation to respectively obtain low intensity magnetic concentrated ore and high intensity magnetic concentrated ore. The discharged high intensity magnetic tailing ore is subjected to concentration and desliming, and is provided for flotation operation. Procedures of the flotation operation comprises one time of roughing, two times of scavenging and two times of concentrating. A collecting agent adopts compound of Fatty calcium, hydroxylamine compound and oleic acid, wherein the ratio is (6-7):(2.0-2.5):(1.0-1.5). The Li2O grade inthe final lithium concentrate is as high as 5.8-6.4%, and the recycling rate is 79.0-88%. The beneficiation technology is simple, stable and reliable, applicability is high, the laboratory index and the industrial application index are in agreement with each other, and the disadvantage of a big gap between the industrial application index and the laboratory index in the spodumene beneficiation technology is overcome. The collecting agent is excellent in selectivity, high in collecting performance, and is environmentally friendly.

The invention discloses a method for preparing ultra-pure iron ore concentrate through deep processing of commercial-grade magnetite concentrate, which adopts one-stage grinding-grading-one-stage weak magnetic separation, one-stage weak magnetic separation concentrate dehydration, and two-stage grinding- Classification, second-stage weak magnetic separation roughing-demagnetization-second-stage weak magnetic separation and concentration, second-stage weak magnetic separation concentrate demagnetization-concentration operation: demagnetize the second-stage weak magnetic separation concentrate , and then concentrated and reverse flotation operations, and finally obtained the grade of TFe in the ultra-pure iron concentrate 72.10% ~ 72.19%, SiO 2 Content 0.18% ~ 0.20%, acid insoluble matter 0.15% ~ 0.17%. At the same time, high-purity iron concentrates with a TFe grade of 70.86% to 71.12% can also be obtained. The collector for the reverse flotation operation of the present invention is a solution of dodecylamine and glacial acetic acid which is modified by heating according to the mass ratio of 4:1. The method of the invention has strong applicability, high efficiency and energy saving. The flotation reagent system is simple, the source is wide, the dosage is small, the selectivity is good, and it is very friendly to the environment and other excellent properties.

The invention relates to a beneficiation method for improving the recovery rate of low-grade zinc oxide ore, which comprises the following steps: washing ore at normal temperature to remove impurities; mixing and selecting oxide minerals and sulfide minerals; and carrying out zinc rough selection and zinc scavenging by using modified alkylamine zinc oxide chelating collector ZJ-5. The invention has the characteristics of easy purchase and low cost of the collector ZJ-5, short process flow, low cost of beneficiation cost, wire range of application, high grade and recovery rate of zinc ore concentrate and the like and is applicable to the low-grade zinc oxide ore.

The invention provides an air inflation method and a device thereof for a flotation column. A whirlcone is combined with flotation air inflation, and by utilizing the characteristic that an air column exists inside the whirlcone during operation, the air column is guided out along with the overflow of the whirlcone and is thoroughly mixed with mine slurry; and then the dynamic power of the overflow of the whirlcone is utilized to jet currents, thereby realizing the air inflation of the flotation column and other kinds of equipment. The invention comprises a whirlcone, mixed vanes, a jet pipe,a hollow throat and a diverging pipe, wherein the mixed vanes are fixed at the outlet of an overflow pipe of the whirlcone, rotary mine slurry flowing out from the overflow pipe comes in contact withthe mixed vanes and are enforcedly divided into four strands of mine slurry flows, and air is involved in and intensively mixed with the mine slurry flows, thereby forming three-phase (air-liquid-solid) mixed flows; and the mixed flows carry great dynamic power to flow into the jet pipe, and then are sequentially led through the hollow throat and the diverging pipe, thereby completing the processes of air inflation and mineralization. The device has the function of grading or sorting, and can be combined with other kinds of sorting equipment to be used, thereby simplifying the mineral processing technology.

The invention discloses a beneficiation method for spodumene ore. The spodumene ore is crushed and ground, ore pulp obtained after ore grinding is sequentially subjected to low-intensity magnetic separation and high-intensity magnetic separation, and weak-magnetism concentrates and strong-magnetism concentrates are obtained; discharged strong-magnetism tailings are fed to the flotation operation after being subjected to concentration and desliming, and the flotation operation process includes primary roughing, secondary scavenging and secondary fine selecting; calcium fatty acid prepared through the double decomposition reaction of a sodium fatty acid soap solution and a calcium chloride water solution is adopted as a collecting agent, the Li2O grade in the finally-obtained lithium concentrate reaches up to 5.7%-6.2%, and the recycling rate is 78%-88%. According to the beneficiation method, the beneficiation technology process is simple, stability and reliability are achieved, applicability is high, and the laboratory index highly conforms to the industry application index; and the defect that in the existing spodumene ore beneficiation technology, the difference between the industry application index and the laboratory index is large is overcome; and the adopted collecting agent has excellent properties that selectivity is good, the collecting capability is high, and environment friendliness is achieved.

The invention discloses an ore dressing method for preparing ultra-pure iron concentrate by adopting magnetite concentrate, which adopts one-stage grinding-classification-one-stage weak magnetic separation, one-stage weak magnetic separation concentrate dehydration, and two-stage grinding-classification , Second-stage weak magnetic separation roughing-demagnetization-second-stage weak magnetic separation and concentration, second-stage weak magnetic separation concentrate demagnetization-concentration operation: demagnetize the obtained second-stage weak magnetic separation concentrate treatment, followed by concentration and reverse flotation operations to finally obtain TFe>72.0%, SiO 2 Ultra-pure iron concentrate with content ≤0.20%, acid insoluble matter ≤0.17%, and high-purity iron concentrate with TFe>70.7%. The collector for the reverse flotation operation of the present invention is a solution of dodecylamine and glacial acetic acid which is modified by heating according to the mass ratio of 4:1. The method of the invention has the advantages of flexible mineral processing process, stable and reliable, strong applicability, high efficiency and energy saving. The flotation reagent system is simple, the source is wide, the dosage is small, the selectivity is good, and it is very friendly to the environment and other excellent properties.

The invention relates to a treatment method for refractory high-iron and low-tin oxide ore, which belongs to the technical field of nonferrous metal metallurgy and ore dressing. The technological process of the present invention is: crushing and grinding the ore, adding reducing agent and binder to make pellets, drying, roasting, crushing, and then wet grinding, and using a magnetic separator to select magnetic minerals Iron concentrate, to obtain iron concentrate products containing more than 60% iron, non-magnetic minerals are sorted by gravity separation equipment such as a shaker, to obtain qualified tin concentrates containing more than 40% tin and tin-rich minerals containing more than 4% tin For medium ore products, the total recovery rate of tin reaches 65-75%. The method adopts the combined process of metallurgy and ore dressing, which greatly improves the recovery rate of tin metal, and at the same time obtains an iron ore concentrate product, simplifies the ore dressing process, has short process, low production cost, and is environmentally friendly, and can greatly increase the yield of tin and iron metals. Recovery rate, effective use of limited resources, has good application and promotion prospects.

The invention discloses a method for producing refined sintered iron powder and refined pelletized iron powder simultaneously. The method comprises the following steps: carrying out primary grinding on finely-ground and pre-concentrated iron ores to obtain a primarily ground product; grading the primarily ground product to obtain a primary overflow ore product and a primary underflow ore product; carrying out secondary magnetic separation on the primary overflow ore product to obtain the refined sintered iron powder, and carrying out primary grinding on the primary underflow ore product in a ball grinding mill; or, carrying out primary magnetic separation and secondary grading on the primary overflow ore product, and then carrying out secondary magnetic separation to obtain the refined pelletized iron powder. The method and the system can be used for producing the refined sintered iron powder and the refined pelletized iron powder simultaneously, and thus the two products having different particle sizes can be produced in one process to meet different market requirements; and besides, the using efficacy of the equipment is improved, and the phenomenon that the utilization efficiency of the equipment is decreased due to change of the scheme of concentrate ore products but no change of ore dressing flow is avoided.

The invention discloses a beneficiation method for processing low-grade tin-lead-zinc polymetallic oxide ore. Firstly, the raw ore is crushed and ball milled; Concentrate, middle ore 1 and tailings 1; tailings 1 is re-selected on a shaking table in the second stage to obtain rough concentrate 2, middle ore 2 and tailings; middle ore 1, rough concentrate 2 and middle ore 2 are re-selected After grinding, return to the primary shaker for re-election. Mix tin, lead, antimony, silver, zinc and indium with coarse concentrate for reverse flotation; the materials in the flotation tank are re-selected by shaking table to obtain qualified tin concentrate, middle ore three and tailings; middle ore three is directly merged into flotation Select the foam product and obtain the mixed concentrate of tin, lead, antimony, silver, zinc and indium. The present invention adopts the combination of the gravity separation process and the reverse flotation process of the gravity-concentration rough ore product, requires fewer types of chemicals, lower dosage, and less environmental pollution, conforms to the national policy of clean production and circular economy, and achieves energy saving, emission reduction, and environmental protection. The purpose of consumption and comprehensive utilization of resources.

The invention relates to a beneficiation method for separating molybdenum-tungsten oxide ore and molybdenum sulfide ore from molybdenum tungsten ore. The beneficiation method comprises the steps that magnetic separation is conducted on raw separation molybdenum sulfide ore at least twice, so that the raw separation molybdenum sulfide ore subjected to magnetic separation is divided into magnetic ore containing molybdenum-tungsten oxide and non-magnetic ore containing molybdenum sulfide; and a molybdenum-tungsten oxide flotation process is conducted on the magnetic ore, and a molybdenum sulfide flotation process is conducted on the non-magnetic ore, so that molybdenum-tungsten oxide concentrate and molybdenum sulfide concentrate are obtained. According to the beneficiation method for separating the molybdenum-tungsten oxide ore and the molybdenum sulfide ore from the molybdenum tungsten ore, the magnetic ore containing molybdenum-tungsten oxide and the non-magnetic ore containing molybdenum sulfide are separated out before ore grinding by means of the magnetic characteristic of iron-bearing ore in skarn in a magnetic separation and flotation combined way, so that the floatability of the ore is improved, the beneficiation feed grades of the molybdenum sulfide ore and the and molybdenum-tungsten oxide ore subjected to flotation are increased, and a subsequent flotation technological process is simplified; and in addition, grading index fluctuation caused by the change of the characteristics of the ore is reduced, and the mine production cost can be reduced easily.

The invention discloses a collector for sorting lead ores, which is prepared from the following raw materials in parts by weight: 50-120 parts of pentylenepentyl alcohol, 10-30 parts of carbon disulfide, 30-80 parts of monochloroacetic acid, and n-butylamine aqueous solution 50-80 parts, pentaerythritol 50-200 parts, terpineol oil 50-150 parts, caustic soda 20-60 parts, sodium sulfide 20-100 parts, water glass solution 50-150 parts, diesel oil 10-30 parts, active nickel catalyst 0-10 parts; the volume percent concentration of n-butylamine in the n-butylamine aqueous solution is 50%-70%. In addition, the invention also provides a preparation method of the collector. The collector of the present invention has collecting performance on lead sulfide and lead oxide, therefore, the collector can select lead sulfide and lead oxide at the same time, without first selecting lead sulfide and then lead oxide. The grade and recovery rate of lead concentrate obtained by collector flotation are significantly higher than those of conventional reagents.

The invention relates to a method for separating copper oxide ores containing magnetic impurities. The copper oxide ores firstly goes through easily separable copper oxide flotation to obtain easily separable copper oxide concentrate and easily separable copper oxide tailings, and then difficultly separable copper oxide floatation is performed on the easily separable copper oxide tailings to obtain difficultly separable copper oxide flotation concentrate; a collecting agent used for the difficultly separable copper oxide floatation is a combined collecting agent; the combined collecting agent is composed of an yellow catching agent and 4-sodium diphenylaminesulfonate; low intensity magnetic separation and high gradient magnetic separation are orderly performed on the difficultly separable copper oxide flotation concentrate to obtain copper magnetic separation concentrate; the magnetic field intensity of the low intensity magnetic separation is 0.2-0.5T; the background magnetic field intensity of the high gradient magnetic separation is 0.7-1.2T. The separation process of the copper oxide ores is simple in flow, low in production cost and prone to industrial implementation.