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1418 results about "Pyrite" patented technology

The mineral pyrite (/ˈpaɪraɪt/), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS₂ (iron(II) disulfide). Pyrite is considered the most common of the sulfide minerals.

Traditional Chinese medicinal composition for treating fracture and preparation method thereof

The invention discloses a traditional Chinese medicinal composition, and particularly discloses a traditional Chinese medicinal composition for treating fracture and a preparation method thereof. The traditional Chinese medicinal composition for treating the fracture is characterized by comprising the following components: Chinese angelica, red paeony root, szechuan lovage rhizome, manchurian wildginger, himalayan teasel root, eucommia bark, fortune's drynaria rhizome, ground beetle, safflower, peach seed, suberect spatholobus stem, williams elder twig, twotooth achyranthes root, garden balsam stem, common clubmoss herb, dried rehmannia root, notoginseng root, root of red-rooted salvia, yanhusuo, pyrite, dragon's blood, frankincense, myrrh, cuttlebone and maifanite. The traditional Chinese medicinal composition is specially used for treating the fracture, has obvious curative effect, gives full play to medicinal properties, addresses both symptoms and root causes, is safe and reliable, and has the excellent effects of dispelling blood stasis, generating fresh blood, cooling blood, stopping bleeding, administering aromatic, removing obstruction, easing joint movement, subdhing swelling, relieving pain, promoting tissue regeneration and fracture union, joining sinew and setting broken bone. 980 patients were treated, and the total effective rate is 98 percent.
Owner:赵献民

Method for floating high-sulfur gold-bearing copper ore

The invention discloses a method for floating high-sulfur gold-bearing copper ore, which aims at solving the problems that the existing beneficiation method is lower in copper and gold recovery rate under high-alkali condition, and problems that xanthate and black powder are adopted as high-sulfur gold-bearing copper ore collecting agents, the collecting power is stronger, the selectivity is poor, the separation difficulty of copper and sulfur can be aggravated and the consumption of inhibitors is increased. The method comprises the steps of by adopting lime and sodium metabisulfite as an ore pulp pH regulator and a pyrite inhibitor, and the mixture of isopropyl xanthogen propionitrile ester, black powder acid and ethyl dithiocarboxyl propionitrile ester according to certain proportion as a collecting foaming agent, carrying out ore grinding, rough concentration, primary scavenging, secondary scavenging, primary concentration, and secondary concentration on a crude ore, thus realizing the high-efficiency recovery on copper and gold in the high-sulfur gold-bearing copper ore. According to the method, through reasonable combination and addition of medicaments, the selective adsorption of the collecting agent on target mineral-copper pyrite and other copper sulfide minerals and gold minerals can be reinforced, and the copper recovery rate and the gold recovery rate can be improved.
Owner:NORTHWEST RES INST OF MINING & METALLURGY INST

Mineral processing technology for recycling fluorite from baotite, magnetite and tailing

The invention belongs to the technical field of mineral engineering and provides a mineral processing technology for recycling fluorite from baotite, magnetite and tailing. In the tailing, mineral particle size of the fluorite is thin, iron-bearing mineral, rare-earth mineral, gangue mineral and the fluorite mineral are closely symbiotic and floatability of minerals such as rear earth, barite, apatite, calcite and dolomite is close to the fluorite mineral, so that separation of the fluorite mineral is difficult. According to the mineral processing technology for recycling the fluorite from the baotite, the magnetite and the tailing, priority desulfuration, rear earth flotation, ore grinding, iron selection through magnetic separation, fluorite selection through direct flotation and a reverse flotation sorting technology are performed on the magnetite and the tailing to enable pyrite, the rare earth, the iron-bearing mineral and the fluorite to be picked out in sections, efficient, high selective, easy-to-operate inhibitor and collecting agent combination is utilized in sorting of fluorite which is mostly performed monomer separation, so that fine fluorite of high grade and high recovery rate is obtained, a purpose of synthetically recycling valuable minerals is achieved, and effective separation of the fluorite mineral and the gangue mineral is achieved.
Owner:包钢集团矿山研究院(有限责任公司)

Method of preparing low iron-containing quartz sand for photovoltaic glass from pyrite type quartzite and pickling purification apparatus

The invention provides a method of preparing low iron-containing quartz sand for photovoltaic glass from pyrite type quartzite and a pickling purification apparatus. The method comprises following steps: washing collected pyrite-containing quartzite, crushing, and preparing sand by wet method; subjecting prepared sand slurry to magnetic separation and screening; collecting sand slurry of 24 to 120 meshes, subjecting the sand slurry to fine-washing, gravity separation, and magnetic separation, and removing water; transferring dewatered sand into the pickling purification apparatus, adding a mixed acid solution, and performing circulating pickling, wherein the mixed acid solution is heated to 75 to 90 DEG C, and circulating pickling is preformed for 3 to 4h at the temperature of 75 90 DEG C; and removing the mixed acid solution, washing the sand with clear water until the pH value is 7, and then dewatering so as to obtain low iron-containing quartz sand. The method is advanced in technology; the apparatus is scientific and reasonable in design; operation is convenient; automation degree is high; production amount is large; product quality is stable; production cost is low; large-scaled production of low iron-containing quartz sand is realized; economic benefits and social benefits of enterprises are increased by scientific and reasonable development and application of pyrite-containing quartzite.
Owner:田辉明

High sulfide pyrite pellet reinforced roasting consolidation technology

The invention discloses a high sulfide pyrite pellet reinforced roasting consolidation technology. Pellets are produced by adopting the technology of drying grate--rotary kiln--ring type refrigeration machine--flue gas desulphurization. The basic flow is as follows: prebatching--mixing--high press roll grinding--batching--mixing--pelletizing--drying--preheating--roasting--cooling--finished product output--flue gas desulphurization. From the perspectives of the occurrence state of sulfur in raw materials, the decomposition behavior of sulfur during the heating process, the iron ore pellet forming theory and the iron ore pellet consolidation mechanism, the system integration reinforced high sulfide pyrite pellet forming and pellet consolidating technology, which includes the improvement of pyritic slag pellet forming dynamics condition, the reinforcement of high sulfur pellet desulphurization and consolidation during the preheating and roasting processes and the control of high SO2 concentration flue gas features and migration rules, is adopted to solve the roasting problem of high sulfide pyrite, make the sulfur content of the finished pellets and the pellet ore strength reach related technical requirements and basically prevent flue gas from corroding equipment. The invention provides a new approach for effective utilization of high sulphur-containing iron concentrate and sulfuric acid slag resource.
Owner:CENT SOUTH UNIV +1

Large-standard high-speed resin heavy duty grinding wheel for grinding steel billet

The preparation method for the large-standard high-speed resin heavy duty grinding wheel for grinding a steel billet comprises the steps that a dedicated binding agent for a high-performance modified high polymer matrix phenolic resin grinding wheel is prepared by using phenolic resin, xylok resin, butyral resin, iron pyrite, cryolite, light magnesium oxide, barite, 400 # carborundum and calcium carbonate, dedicated formulas for a grinding layer and a core layer are separately designed by using grinding materials such as fused alumina zirconia, aluminium oxide sintered corundum, black silicon carbide, furfural, dibutyl ester, fibers and steel rings, and the large-standard high-speed resin heavy duty grinding wheel for grinding the steel billet is prepared by adopting a dual-phase reinforced composite technology and structure. According to the large-standard high-speed resin heavy duty grinding wheel for grinding the steel billet, the linear velocity is equal or greater than 90 m / s to 120 m / s, the maximum diameter is 925 mm, the thickness is 125 mm, and the tensile and breaking strength and the grinding efficiency of the grinding wheel are greatly improved. When the large-standard high-speed resin heavy duty grinding wheel for grinding the steel billet is under heavy duty, the adaptability of the condition of grinding range is wide, and the linear velocity is high. The grinding efficiency reaches a thickness of 1 cm at a time, the problems that an existing grinding wheel cannot adapt to a steel billet, and the heavy duty grinding of steel is difficult are solved well, and the increasing development requirements of the iron and steel industry are met.
Owner:江苏华东砂轮有限公司

Beneficiation method for copper sulfide ore containing easily-sliming gangue minerals

ActiveCN105435966AHigh selective adsorptionIncrease buoyancyFlotationEthylenediamineSlurry
The invention relates to a beneficiation method for copper sulfide ore containing easily-sliming gangue minerals. According to the method, lime is adopted as pH regulator and pyrite depressant of flotation pulp of the copper sulfide ore containing the easily-sliming gangue minerals; sodium sulfide serves as activator of a small number of copper oxide minerals in the ore; sodium hexametaphosphate, sodium silicate or ethylenediamine serves as gangue slurry dispersant; a combination of butyl xanthate and other collectors serves as a collector of copper sulfide minerals; terpernic oil serves as foaming agent. The ore is subjected to primary grinding, primary roughing, primary scavenging and three-time concentration; the ore pulp is subjected to strong stirring and pulp mixing before starting to be subjected to primary roughing, primary scavenging and primary concentration, so that copper contained in the ore is efficiently recovered. According to the method, through reasonable combination and addition of chemicals, the ore grinding and pulp mixing process is strengthened, the adverse influence of gangue slurry on copper sulfide mineral floatation is eliminated, the surface characteristics of copper sulfide minerals are improved, the preferential adsorption of the collector on the surfaces of the copper sulfide minerals is enhanced, and accordingly, compared with a conventional method, the copper grade and the copper recovery rate of copper concentrate are substantially increased.
Owner:NORTHWEST RES INST OF MINING & METALLURGY INST

Method for pretreating refractory gold ore by employing microwave calcining

The invention relates to a method to pre-treat a hard-to-leach gold ores-pyrite by microwave roasting, which is characterized in that the gold ores-pyrite or fine gold ores-pyrite with the granularity being 200 meshes which takes 90% to 95% of the whole gold ores-pyrite is positioned in a reaction chamber of a microwave roasting oven, a nitrogen is filled fully into the reaction chamber, starting the microwave roasting oven, the gold ores-pyrite or fine gold ores-pyrite is radiated and roasted by the microwave in the nitrogen atmosphere, the roasting temperature is 450 to 580 degree centigrade, the power is 4 to 6kw, the microwave roasting oven stops working after roasting for 5 to 20 minutes, a roasted product is made when the roasting gold ore-pyrite is taken out. The method to pre-treat a hard-to-leach gold ores-pyrite by microwave roasting has the advantages of increasing the gold leaching yield of the hard-to-leach gold ores-pyrite up to over 90%, reaching purpose of the environment protection because the sulfur is precipitated as a free sulfur without the recovery process of smoke and dust, and saving the energy because the microwave roasting process is adopted and the pretreatment time is greatly shortened.
Owner:SHENYANG LIGONG UNIV

Liquid making technique for manganese oxide ore

The invention discloses a liquid making technique for manganese oxide ore, comprising the steps of: adding the manganese oxide ore powder, pyrite powder, sulfuric acid solution into a leaching vat forleaching; adding a neutralizing agent for neutralizing after reaching leaching termination; adding ammonia sulfate, potassium permanganate and sodium dimethyldithiocarbamate into the neutralization liquid after filtration until the nickel is qualitatively removed; then, adding barium sulfide or adding barium sulfide into the filtrate after filtration, wherein the dosage of barium sulfide is 100-2000g/m<3> manganese sulfate solution; adding XY-3 impurity removal agent after filtration, wherein the dosage of XY-3 impurity removal agent is 50-400g/m<3> manganese sulfate solution, the temperatureis controlled at 30-80 DEG C, the reaction time is 0.5-3h, and the pH is 4.5-6.9; and filtrating to obtained purified manganese sulfate solution. The recovery rate of the qualified, refined and purified manganese sulfate solution is more than 90%, based on common electrolytic technique, the quality of products achieves national standard, the electrolytic yield is larger than 3kg/veneer, the powerconsumption is not more than 7500kwh/t, and the yield, cost and efficiency are all better than the traditional level of manganous carbonate production.
Owner:熊一言

Method for recycling nitrogen gas and sulfur dioxide from calcining iron pyrite burner gas through variable-voltage variable-frequency adsorption

The invention discloses a method for recycling nitrogen gas and sulfur dioxide from calcining iron pyrite burner gas through variable-voltage variable-frequency adsorption. The method comprises the following steps: dedusting, purifying, drying and cooling the calcining iron pyrite burner gas, and removing dust particles and rust by a refining sulfuric acid burner gas filter made of a 200-mesh polytetrafluoroethylene material; deeply dehydrating by a refining dehydrating tank in a refining manner, deoxidizing and removing carbon dioxide, separating N2 and SO2 through variable-voltage variable-frequency adsorption, compressing or cooling and performing gas-liquid separation to obtain liquid SO2, bottling the separated nitrogen gas and the liquid SO2 for industrial use, and enabling SO2 which is not liquefied and separated to enter a circulating process of compression or cooling and gas-liquid separation, so as to enable SO2 to be separated continuously. The method realizes comprehensive utilization and zero emission of mixed burner gas containing a great amount of nitrogen gas and sulfur dioxide caused by calcining of iron pyrite, the obtained liquid SO2 has high purity, the process is green, safe and energy-saving, and realizes zero emission and low cost.
Owner:GUANGXI UNIV

Rice and wheat straw active carbon powder artificial graphite friction material brake pad and manufacturing method thereof

The invention discloses a rice and wheat straw active carbon powder artificial graphite friction material brake pad and a manufacturing method thereof. The brake pad comprises a friction material, a noise elimination sheet, a steel back and an accessory, wherein the friction material comprises the following components: 25 parts of rice straw composite fibers, 6 parts of phenolic modified resin, 10 parts of wollastonite, 5 parts of potassium titanate whiskers, 0.5 parts of iron pyrite, 0.5 parts of carbon black, 1 part of aluminum oxide, 7 parts of 40-mesh brass powder, 15 parts of rice and wheat straw active carbon powder, 5 parts of secondary reduced iron powder and 25 parts of rice and wheat straw active carbon powder artificial graphite; the friction material is adhered on the steel back; the noise elimination sheet is mounted on the surface of the steel back; the accessory is riveted on the steel back. The prepared rice and wheat straw active carbon powder artificial graphite friction material enhances the toughness of the brake pad, improves the performance and the braking effect of the brake pad, guarantees stable friction coefficient of the brake pad, reduces frictional noise, is environment-friendly and pollution-free, and expands the utilization channel of rice and wheat straws.
Owner:JIANGSU JINMAISUI NEW ENERGY TECH
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