51results about How to "Good technical indicators" patented technology

The invention relates to a method for extracting indium and zinc from high-iron indium-containing zinc calcine and preparing iron oxide. A zinc ferrite structure in the high-iron indium-containing zinc calcine is damaged by reduction roasting, elements such as zinc, iron and indium in the reduced calcine are obtained by neutral leaching and acid leaching, indium-rich slag is obtained by neutralization for precipitating indium, the iron grade of slag obtained by removing iron from hematite under high pressure is high, an industrial iron oxide product can be obtained by acid washing and roasting, and liquid obtained after the iron is removed can be directly purified and electrolyzed after being neutralized by smoke. A technical route of maximally extracting base metal such as the indium, the zinc and the like and recycling associated iron minerals simultaneously is provided, and the problems that the recovery rate of the indium is low and the iron cannot be recycled in the process of smelting a high-iron indium-containing zinc concentrate at present are solved; and a clean production technology which combines effective extraction of the base metal with effective utilization of associated iron is provided for treating the indium, the zinc and other high-iron non-ferrous metal materials.

The invention discloses an ore separation method for recycling scandium from bayan obo tailings. According to the ore separation method, the bayan obo tailings are graded firstly, and then the obtained coarse ore grains are ground and then returned to be graded and fine ore grains are pulped and then subjected to floatation, thus forming a closed circuit grinding flow; floatation is the closed circuit flow of fractionation and comprises rough floatation, fine floatation and scavenging, wherein the floatation concentrates are easily floating minerals such as fluorite and rare earth; the floatation tailings are subjected to magnetic separation including low intensity magnetic separation and high intensity magnetic separation, and light ore grains obtained after the non magnetic ore obtained through magnetic separation is separated again are scandium concentrates, wherein the obtained scandium concentrates has high scandium content being more than 500g/t and the recycling rate being higher than 60%. The method creates a breakthrough for directly recycling scandium from bayan obo tailings, is simple in process and also provides high-grade bayan obo tailings from which rare earth, fluorite and iron can be recycled.

The invention discloses a beneficiation method for comprehensively using vanadium-bearing titanomagnetite. The method comprises the following steps of: performing mixed exploiting of ore above cut-off grade and ore below cut-off grade; crushing the mixed ore into ore with the granularity of 10mm completely, performing weak magnetic rough flotation or medium magnetic rough flotation on the crushedproduct to select out mineral aggregates of which the main component is the anadium-bearing titanomagnetite, performing strong magnetic scavenging on rougher tailings to select out the mineral aggregates of which the main component is ilmenite, combining the mineral aggregates into a pre-sorted concentrate, and discarding gangue of which the yield is 31.88 to 33.20 percent; performing I section coarse grinding the concentrate into concentrate with the granularity of 1mm completely, performing weak, medium and strong magnetic separation, discarding coarse gangue, performing II section fine grinding on the obtained coarse mixed concentrate to grind the obtained concentrate into concentrate with the granularity of 0.15mm completely, adding a modifier, a yellow catching agent and a foaming agent into the product of the II section ore grinding to perform flotation for a sulfide ore and obtain high-quality linnaeite; performing weak magnetic separation on titanomagnetite on tailings of the flotation for the sulfide ore to obtain high-quality iron ore concentrate; and performing strong magnetic titanium separation on tailings of iron separation, further gathering the ilmenite to obtain strong magnetic separation concentrate, and adding the modifier, sodium aliphatate and an auxiliary catching agent into the strong magnetic separation concentrate to perform flotation for the ilmenite and obtain high-quality titanium concentrate.

The invention belongs to the fuel battery technique, relating to a method for preparing proton exchange membrane fuel battery with high polymer resin composite bipolar plate. The preparing method comprises: adding globular graphite in 70-80wt%, thermoplastic polyimide resin in 15-25wt%, coupling agent (KH-560) in 0.5-1.5wt% and polar plate fiber reinforcing agent (staple carbon fiber) in 3-10wt% into mixing machine to be mixed for 15-35 minutes; mixing and heating to 80-100Deg. C, to be put into the mould which has been heated to 80-100Deg. C; the vacuum degree of vacuum hydraulic presser is -0.085MPa, the compression molding temperature of mixed material is controlled in 120-180Deg. C, the compression molding pressure is 0.5-15MPa, and the warm-keeping time of composite dipolar plate in the hydraulic presser is controlled in 2-50 minutes; the product is demoulded and laid into oven for final treatment while the temperature is in 80-180 Deg. C, and the time is 0.2-2 hours, then extracting the product to be cooled in room temperature to attain the final product. The quality index of invention can meet the standard of composite bipolar plate of proton exchange membrane fuel battery.

The invention relates to a preparation method, application and using process of a floating agent prepared from drainage oil, wherein the preparation method of the floating agent comprises the following steps of: (a) purifying the drainage oil; (b) carrying out hydrolysis reaction on the purified drainage oil obtained from the step (a) to obtain the floating agent used for floating ores. When the floating agent used by the invention and prepared from the drainage oil is used as a collecting agent for floating the ores, the selectivity of the collecting agent can be enhanced, and the technical indicator and the economic indicator of flotation are enhanced favorably; and in addition, because a raw material used for the preparation of the floating agent is the drainage oil, the technical scheme provided by the invention has important significance on the aspects of preventing environmental pollution, simplifying production process, reducing food security threat, and the like.

The invention discloses a method for separating scandium from bayan obo tailings, which belongs to the field of mineral separation. The method takes the bayan obo tailings are raw materials and comprises the following steps of: grading the raw materials; grinding obtained coarse granular ores, and then returning and grading the ground ores; carrying out size mixing on fine granular ores, then performing low intensity magnetic separation on the fine granular ores to form a closed circuit grinding process; performing floatation on the selected tailings subjected to the low intensity magnetic separation; and then carrying out high intensity magnetic separation on ore pulp of the tailings subjected to the flotation, thus obtaining non-magnetic ores which are the concentrated scandium. According to the method disclosed by the invention, the fractionation and mineral separation method is adopted, the technology is simple and scientific, the concentrated scandium with the content of scandium oxide being more than 420ppm and the recovery rate being more than 65% can be obtained, and other recyclable resources in the bayan obo tailings can be further concentrated when the concentrated scandium is obtained.

A blast furnace smelting method of high-grade high-vanadium chromium-contained type vanadium-titanium iron ore concentrates comprises the following steps that (1) high-grade high-vanadium chromium-contained type vanadium-titanium iron ore concentrate fines, iron ore concentrate powder, magnesite, lime, return mines and fuel are mixed, and high-magnesium sintered ore is made; (2) high-grade high-vanadium chromium-contained type vanadium-titanium iron ore concentrate fines, bentonite and fuel are compacted to be pellets; (3) the high-magnesium sintered ore and the pellets are mixed, lump iron is added, and blast furnace burden materials are made; (4) blast furnace smelting is started, and blast furnace smelting comprises a charging system, an air blowing system, a thermal system and a slag forming system; the wind-warm syndrome is 1100-1200 DEG C, the coke ratio is 330-380 kg/t, and the coal ratio is 160-200 kg/t; and (5) tapping is conducted on molten iron every 70-90 min, and the temperature of the molten iron is 1430-1500 DEG C. According to the blast furnace smelting method of the high-grade high-vanadium chromium-contained type vanadium-titanium iron ore concentrates, the proportion of the high-vanadium chromium-contained type vanadium-titanium iron ore concentrates in blast furnace smelting raw materials is improved, and the ironmaking cost is reduced; and the blast furnace utilization factor is improved, the comprehensive coke ratio is greatly reduced, and meanwhile the metal yield is kept at a high level.

The invention relates to a method of potent abrasive belt base paper production which is to make paper in multicylinder and multiple nets paper machine, spray amylum and gelatinize the surface in the net of the machine continuously ; the production process is: preparing the main raw material of unbleached pulpboard, bleached sulfate pulpboard firstly; then adding light calcium, and smashing pulp by hydraulic pulper before entering mill pond, then entering into slurry pond after refining by the double-mill, and then transferring it into the plasm adjusting box while adding AKD, PAE, the heat-resistant agent and anti-oil agent; the adjusted pulp is got rid of waste by cleaner and was added in the retention agent and dyes which enters into the nets of the multicylinder and multiple nets paper machine by the pulp pump and rotor screen; after spraying amylum in nets, it is covered with the glue on machine surface after passing the press and dry parts; last it is dried by the dry part and passes the pressed polish part and batching part to get the product. The invention has the good technique index after detecting.

The invention relates to an efficient environment-friendly concrete preservative, which comprises the following components in portion by weight: 10 to 18 portions of various benzoic acids and boric acids, 20 to 40 portions of silica fume, 20 to 35 portions of alkalis; 35 to 50 portions of ethanolamine, and 15 to 20 portions of active components. The preservative can be widely applied to various building materials, especially to concrete and cement, and is reliable in rust prevention and corrosion resistance and good in environmental indexes. The preservative has the advantages of containing no mineral oil, containing no nitrite, chromate and the like harmful to human body, adapting to compressive strength (50 MPa in general) of actual requirements, improving strength, durability and heat resistance and meeting the requirements for high-performance concrete, along with no toxicity, no stimulation, no pollution, good construction performance, high dimensional stability, less shrinkage and no cracking in the hardening process.

The invention discloses a mineral separation method for recovering cassiterite from tin-copper paragenic ore. The method includes the steps of conducting ore grinding on raw ore, conducting flotationon copper sulfur to obtain copper-sulfur bulk concentrates and flotation sulfur tailings, conducting magnetic separation on the flotation sulfur tailings to obtain magnetic separation concentrates andmagnetic separation tailings, conducting flotation on the magnetic separation tailings through a specific agent to obtain tin flotation concentrates and tailings, and conducting centrifugal separation on the tin flotation concentrates to obtain tin concentrates and tin secondary concentrates. According to the method, in the flotation process of cassiterite, through the selective flocculation of fine cassiterite, by means of a specifically-combined inhibitor, the consumption of a collector can be reduced, the cost of the agent is reduced, and meanwhile it is ensured that the recovery grade andrecovery rate of the cassiterite are not reduced, the tin grade is higher than 40% and the total recovery rate is larger than 85%. According to the method, by means of the non-desliming bulk flotation, efficient cassiterite enrichment is realized, and the method is short in technological process, good in technical index and excellent in recycled product structure and has high application value incassiterite recovery.

The invention relates to a magnetic separation and deinking method for waste paper, comprising the following steps: (1) adding waste paper and magnetic seeds in a pulper, adding water, sodium silicate and NaOH for repulping, wherein the repulping conditions are as follows: the magnetic seed dosage is 0.05-0.2wt%, the dosage of sodium silicate is 2-10wt%, NaOH is used to regulate the pH value to be 7-10, and the pulp concentration is 10-15wt%; (2) adding water for diluting after water paper repulping until the pulp concentration to be 0.5-4wt%, adding flocculant which accounts for 0.01-0.1wt% of dry paper into the pulp after repulping for magnetic seed flocculation, enabling the deciduous ink particles to be adhered with magnetic seeds, wherein the pH value is 7.0-11.0, the time is 10-30min, and the stirring speed is 200-1000rpm; and (3) separating the flocculated ink particles from the pulp by a deinking device for size after magnetic seed flocculation. The method in the invention can obviously improve pulp whitness and fiber yield of water paper, and can be used for producing deinking pulp with high whiteness and high deinking rate and small amount of paper fiber loss.

The invention provides continuous flash process equipment for waste oil. The continuous flash process equipment comprises a hot-blast stove, a preheating kettle, a gas collection column, a flash kettle, a flash column, a fractionating column, etc.; an oil pump is mounted between the preheating kettle and the flash column; a tee joint is arranged at an inlet of the oil pump, wherein one end of the tee joint is connected to the bottom part of the preheating kettle through a valve, while the other end of the tee joint is connected with the bottom part of the flash kettle through another valve; another tee joint connected to an outlet of the oil pump is respectively connected to the bottom part of the gas collection column above the preheating kettle and the bottom part of the flash column above the flash kettle through connecting pipes; the outlet in the top part of the flash column is connected to the middle part of the exposed fractionating column through an oil stopper; a diesel tank, the preheating kettle and the flash kettle are connected to the bottom part of the oil stopper through the pipelines. The continuous flash process equipment for waste oil is convenient to operate, high in degree of automation, high in processing precision, fast in flash speed, no any fuel, and high in output, and saves fuel; the produced oil has technical index and additional value higher than those produced by common distillation way; the produced oil can replace the raw material of a large ship oil plant and the crude oil of base oil, so that the economic benefit is great, and the resource and energy are saved.

The invention discloses an automotive navigation alcohol fuel heat value synergistic additive. By the aid of the automotive navigation alcohol fuel heat value synergistic additive, the technical problem of insufficient power of existing methanol fuel during use can be solved. The automotive navigation alcohol fuel heat value synergistic additive comprises at least two types of reagents including, by weight, 5-20 parts of acetone, 5-20 parts of cyclohexane, 6-18 parts of octane, 3-18 parts of methylaniline, 1-5 parts of nitrobenzene and 1-3 parts of cyclohexanone. The automotive navigation alcohol fuel heat value synergistic additive has the advantages that a fuel heat value of methanol gasoline with the automotive navigation alcohol fuel heat value synergistic additive can be increased, sufficient combustion of fuel can be promoted, and accordingly the dynamic performance of engines of automobiles can be enhanced.

The invention discloses a navigation alcohol fuel dissolving-assisting water-resistant additive, and solves the technical problem that existing methanol gasoline layers frequently during using and storing processes. The dissolving-assisting water-resistant additive is prepared from the following components in parts by weight: more than two reagents of 0 to 40 parts of isopropyl alcohol, 5 to 15 parts of ethylene glycol butyl ether, 3 to 20 parts of dimethyl carbonate, 1 to 10 parts of ethyl phenol polyoxyethylene ether, 5 to 20 parts of ethylene glycol, 5 to 20 parts of butanediol and 5 to 20 parts of ethylene glycol monomethyl ether. The methanol gasoline which is prepared by utilizing the dissolving-assisting water-resistant additive does not layer easily, is not affected by low temperature or high temperature, and can be stored for a long time.

The invention relates to the field of waterproof materials, in particular to a pre-laid self-adhesive film coiled material composite waterproof sheet and a preparation method and application thereof.The composite waterproof sheet comprises a composite layer and a high-density polyethylene layer which are arranged in a stacked mode, and the material for forming the composite layer is a vinyl polar copolymer; and the high-density polyethylene layer is made of high-density polyethylene. The pre-laid self-adhesive film coiled material composite waterproof sheet provided by the invention has excellent aging resistance, peel strength and puncture resistance, and meanwhile, the preparation method is simple, pollution-free and environment-friendly.

The invention discloses a vehicle navigation alcohol fuel anti-corrosive anti-swelling additive. The technical problem of corrosion, brought by existing navigation alcohol fuel, to engine metal partsis solved. The anti-corrosive anti-swelling additive comprises at least two agents of the following components in parts by weight: 1-20 parts of ethanolamine, 1-5 parts of 2-mercaptobenzothiazole, 1-5parts of dihydroimidazole, 1-10 parts of N,N-bis(salicylidene)propanediamine, 5-15 parts of dibutyl sebacate, 1-20 parts of cyclohexylamine, 1-5 parts of pyrazolone, 0.5-8 parts of 2,6-dimethyl tert-butyl ether and 1-12 parts of a barium salt of phosphosulfurized polyisobutylene. By using navigation alcohol fuel produced from the vehicle navigation alcohol fuel anti-corrosive anti-swelling additive, in production, storage and transportation processes, organic acid formed by external and internal water and the navigation alcohol fuel can be inhibited; and in a use process, corrosion to an engine can be prevented, full combustion of the fuel is promoted, and acid and formaldehyde are reduced.