31results about How to "Loose process conditions" patented technology

The invention relates to a method for extracting precious metal from a disabled auto-exhaust catalyst, which comprises the following steps: 1. lixiviating precious metal from the disabled auto-exhaust catalyst by a hydrometallurgy process and obtaining precious metal concentrates after permuting lixivium; 2. lixiviating slag, collecting precious metal of the slag by a pyrometallurgy process to obtain a precious metal phase and selectively lixiviating base metal in the precious metal phase to obtain precious metal concentrates; and 3 combining the precious metal concentrates obtained in the first two steps and refining the precious metal concentrates to produce platinum, palladium and rhodium products. The invention compensates the deficiency that the percent recovery of the precious metal is low by simply treating the disabled auto-exhaust catalyst with the hydrometallurgy process and has the advantages that the contents of platinum, palladium and rhodium in the waste slag are smaller than 1g/t and the product purity reaches 99.95 percent.

The present invention relates to a diffusion technique of a crystal-silicon efficient high-sheet-resistance battery piece. The diffusion technique comprises the steps of furnace entering, low-temperature oxidation, low temperature gas reaction deposition, low temperature dopant redistribution, high temperature gas reaction deposition, cooling dopant redistribution, low temperature gas reaction deposition, low temperature dopant redistribution and discharge. With adoption of the diffusion technique provided by the present invention, photoelectric conversion efficiency of the battery pieces can be raised, the production time is shortened, and the production efficiency is raised.

The invention relates to a blow molding medical bag and a preparation method thereof. The blow molding medical bag includes a bag body. One end of the bag body is provided with a convex filling opening and the other end is provided with a lifting ring. The bag body, the filling opening and the lifting ring form an integral structure. The preparation method includes: taking medical polythene, medical polypropylene or medical modified-polypropylene as the raw materials and adopting a hollow blow molding method and a hollow blowing device to carry out one-time blow molding on the medical polythene, the medical polypropylene or the medical modified-polypropylene to acquire the blow molding medical bag. The blow molding medical bag has the advantages of reasonable structure, being convenient for mechanized filling and packaging, effectively preventing a loaded liquid from leaking and divulging. The invention can not only ensure the pollution free property during the filling and packaging processes, but also realize high speed manufacture with low cost, thus solving a plurality of defects existed in the existing perfusion bag of non PVC materials and polypropylene perfusion bottle. The preparation method can realize industrialized and mechanized manufacture and automatic filling and has the advantages of low cost and high output.

The invention relates to the technical field of chemical engineering, in particular to a hydrofluoric acid arsenic removal process. The process includes steps: 1) sampling from anhydrous hydrogen fluoride to be subjected to arsenic removal, and adopting hydrogen peroxide solution for titration of reducing substances in a sample to obtain hydrogen peroxide consumption T of the sample; 2) after chemical pretreatment, feeding the anhydrous hydrogen fluoride to be subjected to arsenic removal into a first elevated tank through a feeding pump, feeding anhydrous hydrogen fluoride in the first elevated tank into a rectifying tower, and distilling for 1h; 3) feeding anhydrous hydrogen fluoride distilled in the step 2) into an absorption tower through a condenser, and adding high-purity water in asecond elevated tank into the absorption tower to obtain 30%-50% hydrogen fluoride solution. By adoption of hydrogen peroxide as an oxidizing agent for hydrofluoric acid arsenic removal, process conditions are loose, simplicity, convenience and feasibility in operation are realized, extraneous impurities are avoided, and accordingly product quality stability is guaranteed, and production efficiency is improved.

A method for preparing a honeysuckle flower extract by jointly adopting membrane separation and column chromatography includes the steps as follows: after preparation of filtrate A and filtrate B, membrane separation, ethanol recycling, column-giving sample-adding and impurity washing, eluting a macroporous resin column by ethanol in volume percentage concentration of 5%-25%, allowing the eluent to pass through a 700-Dalton membrane, conducting pressure reduction and concentration on membrane concentrate in the temperature of 50-80DEG C, and then conducting spray drying, thus obtaining a chlorogenic acid extract; and eluting the macroporous resin column by ethanol in volume percentage concentration of 55%-85%, conducting pressure reduction and concentration on the eluent in the temperature of 50-80DEG C, and then conducting spry drying, thus obtaining a flavone extract. Compared with the prior art, the method adopts the membrane separation technology and the column chromatography technology jointly to prepare the honeysuckle flower extract and can obtain the chlorogenic acid extract and the flavone extract in the honeysuckle flower simultaneously; and the method has such advantages as follows: the utilization rate of medicinal materials is high and the content of the obtained active ingredients is high, so that the subsequent processing and using are facilitated; and the method is simple in technology, low in energy consumption during operation, and convenient for large-scale industrial production and popularization.

The invention relates to a technique for the preparation of phosphorus dregs cast stone used for construction decoration and using high temperature phosphorus dregs fluid. The invention is characterized in that: firstly, the configuration and the preheating of auxiliary raw material: quartz sand and kaoline are taken as auxiliary raw materials and heated to 1,300-1,450 DEG C; secondly, hot ingredient: the high-temperature phosphorous dregs fluid, which is discharged from a phosphorus electric stove, passes a fluid groove and flows into a pond kiln, and the auxiliary raw material is put into a pond kiln simultaneously, wherein, the quality ratio of the phosphorus dregs to the auxiliary raw material is 65-75:25-35; thirdly, melting: the melting mix of the phosphorous dregs and the auxiliary raw material reaches 1,450-1,580 DEG C; fourthly, shaping; last, crystallization and annealing: the crystallization is processed under 1,000-1,150 DEG C for 60-120 minutes, and then is annealed to room temperature, thus a product is made. The invention can effectively use the thermal energy of the high-temperature phosphorous dregs fluid to realize the conversion of the phosphorous dregs fluid into the resources and reduce the energy consumption and the cost of cast stone production, thereby causing the phosphorous dregs cast stone adaptive to the purpose of large-scale construction decoration.

The invention discloses a barium fluoride up-conversion transparent ceramic and a preparation method thereof, and belongs to the technical field of optically functional materials. The existing alumina up-conversion transparent ceramic has low up-conversion luminous efficiency and is prepared difficultly. The barium fluoride up-conversion transparent ceramic utilizes barium fluoride transparent ceramic as a matrix and comprises: by mole, 60 to 89% of barium fluoride, 10 to 25% of ytterbium fluoride, and 1 to 15% of one or more of fluorides of erbium, holmium, neodymium, thulium and promethium. The preparation method comprises the following steps of blending raw material nanometer powder according to the mole percentage, wherein barium fluoride powder has particle sizes of 20 to 80nm and rare earth fluoride powder has particle sizes of 10 to 90nm, pressing the blended raw material nanometer powder into a biscuit, pre-sintering the biscuit at a temperature of 500 to 800 DEG C for 0.5 to 5 hours, carrying out vacuum sintering of the pre-sintered biscuit under the conditions of pressure of 50 to 500MPa, a vacuum degree of 10<-2> to 10<-3>Pa, a heating rate of 1 to 20 DEG C/min, a sintering temperature of 600 to 1200 DEG C and sintering time of 0.5 to 5 hours, and cooling to a room temperature at a rate of 1 to 20 DEG C/min to obtain the barium fluoride up-conversion transparent ceramic.

The invention provides a method for the deep desulfurization of gasoline, belonging to the oxidation-extraction desulfurization technology. The method comprises the following steps: adding ionic liquid and solid manganese dioxide to the gasoline to be subjected to deep desulfurization to form a three-phase system; heating and stirring the three-phase system under the microwave condition so as to conduct the deep oxidation desulfurization reaction; and standing and carrying out solid-liquid separation; and washing the obtained filtrate by adding clean water, then, standing, and carrying out liquid separation to obtain the gasoline with lower sulfur content. Compared with the prior art of hydrodesulfurization, the invention has the advantage that the octane number of the gasoline cannot be reduced; compared with the prior art of oxidation desulfurization, the invention has the advantages of relaxed technological conditions, secondary pollution prevention, simple operation and lower cost; and the invention further has the advantage that the method is favorable for recycling the solid manganese dioxide and ionic liquid used in the reaction process.

The invention relates to a ZnO thin film laser ablation fabrication method and belongs to the optical functional material technical field. An existing method for fabricating a ZnO thin film is very difficult to implement. The ZnO thin film laser ablation fabrication method of the invention is a sol-gel method. The ZnO thin film laser ablation fabrication method includes the following steps that: zinc acetate is dissolved in an organic solvent, ethanolamine of which the molar quantity is equal to that of zinc ions is added into an obtained solution, and the solution is stirred, and a sol liquid is obtained; a substrate is spin-coated with the sol liquid, and the substrate spin-coated with the sol liquid is subjected to lower-temperature heat treatment, so that a sol film can be obtained; and laser is adopted to ablate the sol film, the power of the laser ranges from 5 to 30 W, ablation time ranges from 1 to 1000 sec, a distance from a laser light source to the sol film ranges from 1 to 50 cm, and a ZnO thin film is obtained. According to the method of the invention, a vacuum environment and a special protective atmosphere are not required, and a ZnO ceramic target is not required to be produced, and therefore, compared with an existing pulsed laser deposition method, the method of the invention has lower requirements for process conditions and is greatly simplified in thin film fabrication.

The alloy powder sleeve cutter comprises a cutter body, the cutter body comprises a cutter body, a cutting edge and a filling groove, the cutting edge is arranged at the edge of the cutter body, the filling groove is formed in the cutting edge, the appearance of the filling groove has a radian, and the filling groove is filled with alloy powder. The preparation method is simple, the process conditions are loose, implementation is easy, the alloy powder layer is sprayed and welded through laser cladding, one side of the cutting edge part is filled with alloy powder, the other side of the cutting edge part is the base material, and the hardness and wear resistance of the alloy powder layer are higher than those of the base material, so that when the kitchen cutter is frequently used, the cutting edge part is not damaged at the cutting edge position; the base material layer can be abraded during cutting, the alloy powder layer cannot be abraded, the base material layer can be thinned by grinding, the cutting edge is sharper and sharper under the condition of long-term use, the cutter is good in lasting sharpness, alloy powder is dispersed uniformly, the longitudinal and transverse uniformity of the internal organization structure of a product is guaranteed, and the abrasion resistance is improved.

The invention discloses a laser ablation manufacturing method for a metastable-state AlZnO solid solution alloy film, and belongs to the technical field of optical function materials. An existing method for manufacturing an AlZnO solid solution alloy film is extremely tedious. The laser ablation manufacturing method for the metastable-state AlZnO solid solution alloy film disclosed by the invention belongs to a Sol-Gel method, and is characterized by comprising the following steps: determining the value of x in AlxZn1-xO to be greater than 0 and smaller than 1, determining the molar ratio of zinc acetate to aluminum acetate according to the value of x, dissolving zinc acetate and aluminum acetate into an organic solvent, adding ethanol amine with the mass being equal to that of zinc ions and aluminum ions, and stirring to obtain a sol rubber solution; spin-coating the sol rubber solution onto a substrate, and carrying out low-temperature treatment to obtain a gel film; carrying out laser ablation on the gel film to obtain the metastable-state AlZnO solid solution alloy film, wherein the laser power is 5 to 30 W, the ablation time is 1 to 1000 sec, and the distance between a laser light source light outlet and the gel film is 1 to 50 cm.