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135results about How to "To achieve the purpose of removing impurities" patented technology

Method for preparing battery-stage anhydrous lithium chloride

The invention provides a preparation method of a battery grade lithium chloride, comprising: (1) calcium chloride is added into the acid clinker extracting solution of lithium concentrate - lithium sulfate solution, the PH value of the solution is regulated by NaOH to eliminate Fe and Mg, and the precipitation of CaSO4.2H2O, Fe(OH)3 and Mg(OH)2 and lithium chloride solution are obtained after the reaction; (2) the products of step (1) are filtered and cleaned to eliminate the precipitation of CaSO4.2H2O, Fe(OH)3 and Mg(OH)2, and the LiCl solution, i.e. a conversion solution is prepared; (3) the conversion solution is added with BaCO3, and filtered and cleaned after the reaction, to eliminate SO42- and Ca2+, and the LiCl concentrate liquid 1 is prepared; (4) the LiCl concentrate liquid is added with HCL and boiled to eliminate CO32-, and added with NaOH solution to back blend PH, then be evaporated, condensed, cooled, crystallized and separated, and the LiCl concentrate liquid 2 is obtained; (5) the LiCl concentrate liquid is added with refining agent, and filtered and cleaned after the reaction to eliminate Na, and the LiCl finish liquid is prepared, the LiCl finish liquid is condensed and dried, and finally the battery grade LiCl product is prepared. The invention has simple production process and can be easily operated.
Owner:TIANQI LITHIUM CORP

Device and method for preparing high-purity chalcogenide glass

InactiveCN102936090ASimple processEliminates impurity absorptionGlass furnace apparatusEngineeringPollution
The invention provides a device and a method for preparing high-purity chalcogenide glass. By means of the device and the method, the technical problem that the chalcogenide glass prepared in the prior art is high in purity content, large in absorbing consumption, complex in purification and the like. The device comprises a first vertical pipe, a second vertical pipe, a connection pipe and a third vertical pipe, wherein the upper end of the third vertical pipe is the only opening of the device, the lower ends of the first vertical pipe and the second vertical pipe are both enclosed, and the upper ends of the first vertical pipe and the second vertical pipe are communicated with each other through the connection pipe; the connection pipe is perpendicular to the first vertical pipe and the second vertical pipe, or an included angle formed by the connection pipe and the first vertical pipe is an obtuse angle; and the lower end of the third vertical pipe is communicated with the connection pipe. By means of a process for repeatedly distilling chalcogenide simple substance raw materials, water impurities containted in the chalcogenide simple substance raw materials is eliminated, and the method and the device are simple in process, no secondary pollution can be guided in during preparation, and impurity absorbing of the chalcogenide glass is remarkably eliminated.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

Smelting separation method of rare earth ores

The invention provides a smelting separation method of rare earth ores. The method comprises the following steps: carrying out leaching, neutralization and impurity removal on sulfuric acid roast ores by using an aqueous solution of magnesium bicarbonate, and carrying out solid-liquid separation to obtain a magnesium-containing rare earth sulfate solution; and carrying out aqueous magnesium bicarbonate solution saponification P507 or P204 extraction transformation or magnesium bicarbonate precipitation transformation enrichment to obtain a high-concentration mixed rare earth chloride solution, carrying out extraction separation, and recovering rare earth from the above obtained aqueous magnesium bicarbonate solution precipitate to obtain various rare earth compound products. Magnesium sulfate-containing wastewater generated in the above process undergoes alkali transformation by cheap alkaline compounds of calcium and magnesium, and CO2 recovered in the smelting separation process is introduced to carry out carbonization purification in order to obtain an aqueous magnesium bicarbonate solution which can be reused in rare earth leaching, transformation, extraction separation and precipitation processes. The method has the advantages of realization of recycling of magnesium and CO2 and zero discharge of ammonia nitrogen and wastewater, great reduction of the production cost, improvement of the recovery rate of rare earths, and realization of green, environmentally-friendly and high-efficient clean production of the rare earths.
Owner:GRIREM ADVANCED MATERIALS CO LTD

Method for preparing rubber accelerator DM (2,2'-dithiobis(benzothiazole)) from 2-mercaptobenzothiazole coarse product as raw material

A method for preparing a rubber accelerator DM (2,2'-dithiobis(benzothiazole)) from 2-mercaptobenzothiazole coarse product as a raw material is provided and is characterized by comprising the steps of adding water and rubber accelerator coarse product M (2-mercaptobenzothiazole) into a reaction kettle with weight ratio of (1-20) to 1, and adding sodium hydroxide with weight ratio of sodium hydroxide to rubber accelerator coarse product M of 100 to (24-60), and reacting to generate M sodium salt liquid; standing solution, collecting supernatant and adding into an oxidation pot, dripping a mixed solution containing hydrogen peroxide with concentration of 1% to 27.5% and dilute sulphuric acid with concentration of 1% to 30% into the oxidation pot with the flow velocity of 1 to 8 m<3> / h under the condition that the temperature is 20 to 60 DEG C and the mixing speed is 50 to 1000rpm, and stopping dripping oxidant solution till the pH value of the solution reaches 4 to 9; and filtrating and washing DM material with the solution, and removing impurities in DM. The process is simple in process, the solvent can be recovered and recycled for use and the loss is small; and the method is nontoxic and harmless to the people, free from the waste gas and high in environmental protection property.
Owner:KEMAI CHEM

Method for detecting salmonella and staphylococcus aureus in food simultaneously

The invention discloses a method for detecting salmonella and staphylococcus aureus in food simultaneously. The method includes the following steps: 1), diluting a to-be-tested food sample according to GB4789 to obtain sample homogenate of 1:10, adding 50-65wt% of nitrilotriacetic acid solution into the sample homogenate according to the volume ratio of the sample homogenate to the nitrilotriacetic acid solution being (5-7):1, vibrating the mixture, adding phosphate buffer solution or 0.05% tween-20 contained phosphate buffer solution, performing centrifugal layering, and discarding an upper layer; 2), mixing a sample obtained after processing of the step 1) with immunomagnetic beads, vibrating the mixture, subjecting the mixture to standing and layering on a magnetic frame, discarding an upper layer, and washing a lower layer of the sample, wherein the immunomagnetic beads are obtained by modifying salmonella and staphylococcus aureus antibodies, which are labeled by magnetic bead coupled biotin, by streptavidin; 3), adding the phosphate buffer solution to the washed sample, vibrating the mixture, applying the mixture to an LB plate, and performing cultivation and observation. The method is simple and convenient to operate, accurate, efficient and low in cost, two target bacteria are enriched, and detection time can be shorten from 72h to 25h.
Owner:HENAN BUSINESS SCI RES INST

Anti-intoxication, alcohol-expelling and liver-protection preparation and preparation process thereof

The invention provides an anti-intoxication, alcohol-expelling and liver-protection preparation which has the functions of anti-intoxication, alcohol-expelling and auxiliary protection on alcoholic liver injury. The preparation consists of the following raw materials: 20-50 parts of vine tea, 5-15 parts of galangal, 10-40 parts of mung beans and 10-40 parts of poria cocos. The vine tea contains a great amount of flavonoid substances, and the dihydromyricetin in the vine tea has special effects in removing toxicity in alcohol, preventing alcoholic liver and fatty liver, inhibiting liver cell deteriorate, reducing the morbidity of liver cancer and protecting the liver. The galangal is acrid and hot in property, can enter the spleen and stomach channels, has the functions of eliminating cold to stop pain and warming the middle energy and stopping throwing and has a certain alcohol-expelling function, and moreover the flavonoid substance galangin in the galangal has a protection function on acute alcoholic liver injury. The poria cocos has the effects of clearing damp and promoting dieresis, tonifying spleen and quieting the heart, can promote the alcohol in bodies to discharge out along with urine, and is beneficial to sobering up. The mung beans have the effect of clearing away heat and toxic materials, can effectively relieve the symptoms of dizziness and unclear speaking after drinking alcohol, and furthermore has the pharmacologic action of protecting the liver and the kidney.
Owner:GANSU LONGSHENRONGFA PHARMACEUTICAL INDUSTRY CO LTD

2024 aluminum alloy melting casting method

The invention belongs to the technical field of aluminum alloy, and relates to a 2024 aluminum alloy melting casting method. The aluminum alloy is prepared from the following ingredients in percentageby mass: smaller than or equal to 0.25 percent of Si, smaller than or equal to 0.35 percent of Fe, 4.55 to 4.65 percent of Cu, 0.5 to 0.7 percent of Mn, 1.55 to 1.65 percent of Mg, 0.1 percent of Cr,0.2 percent of Zn, smaller than or equal to 0.12 percent of Ti, impurities (the quantity of single impurities is smaller than or equal to 0.05 percent; the total quantity is smaller than or equal to0.15 percent) and the balance of Al; then, melting, refining, degassing, slag removal and casting are performed; a semi-continuous casting process is used for casting; in the refining process, 23 to 28 percent of NaCl, 20 to 40 percent of KCl and 40 to 60 percent of MgCl2 are added to be used as refining agents; the casting temperature is controlled to be 730 to 740 DEG C; the casting speed is 20to 22 mm/min; the single water flowrate is 300 to 310 L/min; the 2024 aluminum alloy cast ingot is obtained. An aluminum cast rod produced by the 2024 aluminum alloy melting casting method has few defects; the material performance and the finished product rate are improved; the energy consumption is reduced; the production cost is reduced; good economic benefits are realized.
Owner:YINGKOU ZHONGWANG ALUMINUM CO LTD

Preparation method of high-purity gold for electron industry

The invention discloses a preparation method of high-purity gold for the electron industry. After gold ingots are rolled into pieces, the pieces are dissolved in aqua regia, a solution is made, nitrate is removed, and a chloroauric acid solution is obtained; sulfuric acid and sodium hydroxide are added to the gold solution, the pH value of the solution is adjusted, the solution is fully stirred and left to stand, and impurities, namely, metal ions, are deposited fully; the solution is subjected to filtration under reduced pressure by the aid of a micro-pore filtering film after being left to stand, and a pure gold solution is obtained; a reducing agent is slowly added to the pure gold solution, the solution is stirred, full reduction, filtration and washing are performed, and gold powder is obtained; the gold powder is placed in a polytetrafluoroethylene container to be boiled and washed with a dilute nitric acid and hydrofluoric acid mixed solution, the solution is filtered and is washed with hot deionized water to be neutral, vacuum drying is performed, and the high-purity gold is obtained. The gold prepared with the method has the purity higher than 99.999%, has the C and S content lower than 1 ppm, has the good smelting cleanliness and can be used as a raw material for high-purity gold evaporation materials for the electron industry.
Owner:SINO PLATINUM METALS CO LTD

Power magnetic levitation separation and enrichment method and equipment

ActiveCN103846158AGuaranteed field strengthGuaranteed dynamic changeMagnetic separationEnrichment methodsNon magnetic
The invention relates to a separation method and equipment for magnetic matters, in particular to a power magnetic levitation separation and enrichment method and equipment. According to the power magnetic levitation separation and enrichment method and equipment, an alternating power magnetic system changing periodically is arranged in a fixed cylindrical barrel in a manner of rotating around the axis of the barrel for 360 degrees; the alternating power magnetic system does rotary movement around the axis of the barrel at a certain angular speed; magnetic matters in separated minerals on the outer side of the barrel form needle-shaped suspended magnetic polymers which are distributed on the outer surface of the barrel; the needle-shaped suspended magnetic polymers move on the outer surface of the barrel along the rotary direction opposite to that of the power magnetic system to form a magnetic fluid, and are swung and overturned under the effect of the alternating power magnetic system to gradually remove un-magnetized slime and non-magnetic minerals from the needle-shaped suspended magnetic polymers, and further, the magnetic polymers get rid of the acting force of the alternating power magnetic system through a magnetic matter unloading device and are collected. The separation and enrichment method and equipment are unique in design and high in separation and enrichment efficiency.
Owner:ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD

Multi-cylinder combined spiral sieve grain cleaning machine

A multi-cylinder combined spiral sieve grain cleaning machine comprises a machine frame, walking wheels are arranged at the bottom of the machine frame, the grain cleaning machine can move conveniently, a sieve body shell is arranged on the upper portion of the machine frame, at least one sieve drum is obliquely arranged in the sieve body shell, an auger is installed in the sieve drum, one end of an auger shaft in the auger is connected with an auger drive motor through a drive chain, the auger is driven to rotate in the sieve drum through the auger drive motor, the sieve drum is divided into a front part and a rear part, the front part is a thin-hole sieve drum body, the rear part is a thick-hole sieve drum body, the thin-hole sieve drum body is located at the lower end, a feed hopper is arranged on the upper portion of one end of the thin-hole sieve drum body, a small impurity outlet is formed in the lower portion of the thin-hole sieve drum body, a grain outlet is formed in the lower portion of the thick-hole sieve drum body and is provided with a grain outlet baffle, a pure grain outlet is formed in one side of the grain outlet baffle, an air flue is formed in the other side of the grain outlet baffle, one end of the air flue is connected with a draught fan, and a large impurity outlet is formed in the rear end of the thick-hole sieve drum body. The multi-cylinder combined spiral sieve grain cleaning machine is simple in structure and novel in design.
Owner:ANHUI JIESHOUSHI YUNLONG FOOD MACHINE ENG

Waste plastic multi-stage sorting system

The invention relates to a waste plastic multi-stage sorting system and belongs to the technical field of waste recycling equipment. The system comprises a material conveyer belt, an acceleration conveyer belt, a triangular conveyer belt and at least two storage bins. The first storage bin corresponds to the discharge end of the triangular conveyer belt, and the second storage bin corresponds to the discharge end of the acceleration conveyer belt. A scraper is arranged below the discharge end of the acceleration conveyer belt. A gap is kept between the scraper and the acceleration conveyer belt. The lower end of the scraper is fixedly connected with an air baffle. The first storage bin is in an inverted conical structure, a filtering plate is disposed at the bottom of the first storage bin, an air draft channel is arranged below the filtering plate, and the tail end of the air draft channel is connected with an exhaust fan. By means of the technical scheme, impurities are removed through inertia firstly, a light plastic box is sucked through negative pressure to move at the bottom of the second storage bin, it is guaranteed that the light plastic box smoothly falls into the second storage bin, and the aim of removing plastic impurities is achieved. The system has beneficial technical effects.
Owner:安徽奥生资源利用科技有限公司

Impurity removing and winnowing machine of wheat

The invention discloses an impurity removing and winnowing machine of wheat. The impurity removing and winnowing machine comprises a machine case, wherein a material inlet hopper is arranged on the front portion of the top wall of the machine case, a raising board corresponding to the material inlet hopper and driven by a vibration mechanism is hinged to the front portion of the machine case, the rear end portion of the raising board is hinged to the inner top wall of a drying machine case and inclines downwards from rear to front, a flow guiding inclined board on the lower portion of the front part of the raising board is further hinged to the inner wall of the front end of the machine case, an air inlet and an impurity removing fan blowing air into a cavity of the machine case through the air inlet are arranged on the lateral wall of the machine case, a material guiding sieve plate under the material outlet end of the inclined board and downwards inclines to one side of the machine case is arranged in the machine case, and a material outlet corresponding to the lower end of the material guiding sieve plate is arranged on the lateral wall of the machine case. The impurity removing and winnowing machine can automatically remove impurities in wheat and has the advantages of being capable of reducing labor intensity and fast in impurity removing.
Owner:山东鸿源生物科技股份有限公司

Wheat impurity removing winnowing machine

The invention discloses a wheat impurity removing winnowing machine. The wheat impurity removing winnowing machine comprises a machine case, wherein a feed hopper is arranged on the front portion of the top wall of the machine case; an upward winnowing board is hinged to the front portion of the machine case, arranged corresponding to the feed hopper and driven by a swinging mechanism; the rear end portion of the upward winnowing board is hinged to the inner top wall of the drying machine case and inclines downwards from back to front; a guide inclined board located below the front portion of the upward winnowing board is further hinged to the inner wall of the front end of the machine case; the side wall of the machine case is provided with an air inlet and an impurity removing draught fan, and the impurity removing draught fan blows into the inner cavity of the machine case through the air inlet; a guide sieve board which is located below the discharge end of the guide inclined board and inclines downwards to one side of the machine case is installed inside the machine case; a discharge opening is formed in the side wall, corresponding to the lower end of the guide sieve board, of the machine case. The wheat impurity removing winnowing machine can automatically remove impurities in wheat, and has the advantages of relieving labor intensity and being high in impurity removing speed.
Owner:山东鸿源生物科技股份有限公司

Tip cutting device of sugarcane harvesting machine

ActiveCN103858598AAdapt to the needs of on-site harvestingQuality improvementHarvestersEngineeringMechanical engineering
The invention relates to a tip cutting device of a sugarcane harvesting machine. The tip cutting device comprises guiding barrels, a telescopic drive device and a tip cutting mechanism, wherein the outer wall of each guiding barrel is provided with a plurality of projections and a plurality of first cutting blades, the quantity of the guiding barrels is two, and the first guiding barrel and the second guiding barrel are symmetric to each other; the telescopic drive device comprises a guide rod and a loop bar which is matched with the guide rod and is horizontally arranged, the end part of a first guide rod of a first telescopic drive device and the end part of a second guide rod of a second telescopic drive device are respectively connected with a baffle plate, and the cross section of the arrangement of the two baffle plates is in a V-shaped structure; the tip cutting mechanism is arranged between the two baffle plates, the edge of a tip cutting disc is provided with a plurality of second tip cutting blades, one end of each tip cutting blade is provided with a distance adjusting device and connected with the tip cutting disc, and the tip cutting disc is connected with a longitudinal adjusting device. By adopting the tip cutting device of the sugarcane harvesting machine, the distance between the tip cutting parts is adjusted according to the harvesting situation of a sugarcane field, the impurity content can be effectively reduced, and the sugarcane quality is improved.
Owner:GUANGXI UNIV

Method for preparing battery-stage anhydrous lithium chloride

The invention provides a preparation method of a battery grade lithium chloride, comprising: (1) calcium chloride is added into the acid clinker extracting solution of lithium concentrate - lithium sulfate solution, the PH value of the solution is regulated by NaOH to eliminate Fe and Mg, and the precipitation of CaSO4.2H2O, Fe(OH)3 and Mg(OH)2 and lithium chloride solution are obtained after the reaction; (2) the products of step (1) are filtered and cleaned to eliminate the precipitation of CaSO4.2H2O, Fe(OH)3 and Mg(OH)2, and the LiCl solution, i.e. a conversion solution is prepared; (3) the conversion solution is added with BaCO3, and filtered and cleaned after the reaction, to eliminate SO42- and Ca2+, and the LiCl concentrate liquid 1 is prepared; (4) the LiCl concentrate liquid is added with HCL and boiled to eliminate CO32-, and added with NaOH solution to back blend PH, then be evaporated, condensed, cooled, crystallized and separated, and the LiCl concentrate liquid 2 is obtained; (5) the LiCl concentrate liquid is added with refining agent, and filtered and cleaned after the reaction to eliminate Na, and the LiCl finish liquid is prepared, the LiCl finish liquid is condensed and dried, and finally the battery grade LiCl product is prepared. The invention has simple production process and can be easily operated.
Owner:TIANQI LITHIUM CORP
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