91results about How to "Easy to achieve serial production" patented technology

A nano silicon metal composite used for a negative electrode of a lithium ion battery comprises the following parts: (a) the first component part is simple substance silicon with the content accounting for 5-75mol% of the nano silicon metal composite; (b) the second component part contains a metal element, a compound formed and a silicon oxygen compound formed by the metal element and silicon, the second component part content accounts for 25 to 95mol% of the nano silicon metal composite; and (c) the third component part is simple substance carbon with the content accounting for 0-70mol% of the nano silicon metal composite. The preparation method is as follows: a porous block, comprising silica and metal or metal oxide and the like, and a conductive negative electrode current collector are compounded as a negative electrode, graphite or an inert positive electrode is used as a positive electrode, the negative electrode and the positive electrode are placed in a mixed salt melt electrolyte using CaCl2 or CaCl2 as the main components, voltage is applied between the negative electrode and the positive electrode, current density and electrolytic quantity are controlled, silica in the porous block is electrolyzed and reduced into nano silicon, and a nano silicon metal composite material is prepared on the negative electrode.

The invention relates to a method for preparing rebaudioside through packed bed enzymatic hydrolysis of stevioside. The method comprises the following steps of: dissolving the stevioside or stevia rebaudiana extract in water or phosphate buffer solution; combining the parts containing rebaudioside of the solution through an immobilization beta-glucosidase packed column; and concentrating and recrystallizing to obtain the rebaudioside. The preparation of rebaudioside takes 5 days in the prior art, and the transformation activity of the beta-glucosidase repeatedly used for 4 times is only 57.72% of the original activity. Through the invention, the preparation of rebaudioside using the immobilization beta-glucosidase only takes 12 hours, and the transformation rate of stevioside after 5 times of use still exceeds 84%. Thus, the method provided by the invention is short in production period, high in production efficiency and easy to realize continuous production, and has very broad application prospects.

The invention discloses a method for quick heap-yellowing of yellow tea. Heap-yellowing is conducted by means of a totally sealed rotary roller container, the massic volume ratio of a placed wet tea base to the roller container is 1:10-40, the temperature of the interior of the roller container is maintained at 25-80 DEG C, the roller container is rotated once every other 0.5-4 h to enable tea to be stirred, and heap-yellowing is stopped after the wet tea base appears evenly orange or golden. By conducting heap-yellowing on yellow tea at a constant temperature with the totally sealed rotary roller container and reserving certain space in the roller container, tea leaves can yellow quickly and can also be stirred, so that tea leaves can yellow more evenly; stirring is conducted once every once in a while during heap-yellowing, so that yellow tea obtained through heap-yellowing does not have soggy odor. By the adoption of the heap-yellowing method, time for heap-yellowing of yellow tea can be shortened remarkably, stirring is easier during heap-yellowing, the quality of yellow tea is improved, labor is saved, and continuous production is facilitated.

The invention discloses a process for preparing N,N-dimethyl-1,3-propane diamine through a continuous method and belongs to the field of organic chemical industry. The process comprises the following steps: by taking dimethylamine and acrylonitrile as raw materials, continuously preparing dimethylamino propionitrile by employing a fixed bed, wherein the molar ratio of dimethylamine to acrylonitrile is (10:1)-(1:1), the reaction temperature is 10-120 DEG C, the air speed is 0.1-10h<-1>, and the conversion rate of the acrylonitrile and the selectivity of the dimethylamino propionitrile are over 99 percent; and allowing the obtained dimethylamino propionitrile intermediate to directly enter a second fixed bed reactor for hydrogenating without any purification treatment, wherein the hydrogenation pressure is 3-10 MPa, a Raney-Ni catalyst is used, an alcoholic solution promoter with 0.1-10 percent of alkali is matched, the air speed is 0.1-4h<-1>, and the yield of N,N-dimethyl-1,3-propane diamine is not lower than 93 percent. The process for preparing N,N-dimethyl-1,3-propane diamine is simple, stable in quality, energy-saving and environment-friendly and is suitable for large-scale production.

The invention discloses a surface strengthening processing method for pinchbeck alloy, and belongs to the technical field of metal material machining. A pinchbeck alloy panel is annealed for 1-2 hours at the temperature of 800 DEG C to 850 DEG C, and a high-energy ball milling machine is utilized for carrying out surface nanocrystallization processing on the annealed pinchbeck alloy panel under the vacuum environment or the liquid nitrogen environment. The pinchbeck alloy panel is subjected to impact and is deformed through 100-200 steel balls with the diameter of 8 mm to 10 mm, the frequency ranges from 20 Hz to 50 Hz, time ranges from 5 min to 30 min, and therefore the high-strength and high-plasticity gradient nanometer pinchbeck alloy material good in stability is manufactured. The method is simple in preparing process, and the panel with the strength two times the strength of traditional annealed pinchbeck alloy can be obtained, wherein good plasticity of the panel can be kept. The prepared high-strength and high-plasticity pinchbeck alloy panel material has wide application space in the rapidly developed industries such as electronic communication, aerospace and weapons.

The present invention discloses a full-automatic tea roller with several rolling drum. It is characterized by that said invention adopts several rolling mechanisms, and uses two motor to make drive to respectively implement rolling movement of rolling mechanism and divided rotation movement of tray. Every rolling mechanism uses three cylinders to make operation; all the cylinders and motors are controlled by controller. Said tea roller is stable in rolling quality and high in working efficiency.

The present invention provides a one kind of Ta2O5 base transparent ceramic product and its laser preparation process, and belongs to the field of ceramic material preparing technology. The Ta2O5 powder or mixed powder of Ta2O5 and TiO2 in the ratio of 92 to 8 is first pre-sintered at 1200-1350 deg.c for 4.8-5.6 hr and is pressed into Ta2O5 base ceramic biscuit; the Ta2O5 base ceramic biscuit is then preheated via irradiation with laser in the power density of 800-1250 w/sq cm for 50-90 sec, and finally sintered with laser in the power density of 4800-5700 w/sq cm for 30-50 sec before cooling to room temperature. The Ta2O5 base transparent ceramic has high density, lowest relative density higher than 97 % and average relative density near theoretical value. The present invention uses communication industrial powder material, and has simple technological process, low power consumption, short preparation process, and low cost.

The invention discloses a dry pesticide suspension agent. The dry pesticide suspension agent is prepared from following components in percentage by mass: 50% to 90% of tricyclazole, 1% to 5% of wetting agent, 1% to 15% of dispersing agent, 1% to 10% of disintegrant, 1% to 5% of binder, 1% to 8% of fly defense special additives, 0% to 1% of defoamer, and the balance of filler. The dry pesticide suspension agent disclosed by the invention solves a problem that a high-content suspension agent is prone to crystallization and sedimentation during a normal storage process, avoids the defects of dustflying and long disintegration time in a dry granulation process, and has the advantages of small particle size, good dispersion, high suspension rate and the like. In the fly-proof application, compared with water-dispersible granules, the dry pesticide suspension agent has the advantages of anti-volatile, anti-drift, and no plugging effects. The adhesion of a drug dropping on the surface of a crop is good, and the application times are reduced. Compared with other granulation processes, a preparation process of the dry pesticide suspension agent disclosed by the invention has the advantagesthat continuous production is easy to realize and environmental protection is realized.

The invention provides a method for preparing a beta-Al2O3 ceramic electrolyte separator for a sodium battery. The method comprises steps as follows: Step (1), Na-Z powder and Li-Z powder which are used as precursor powder are synthesized respectively on the basis of an Al source and a Na source as well as on the basis of the Al source and an Li source; Step (2), the Na-Z powder and the Li-Z powder are mixed in the specified mole ratio and mixed with a binder and a solvent, and then slurry is prepared; Step (3), the slurry is atomized and then sprayed onto a rotating mandrel to be condensed and molded into a base body; Step (4), the condensed and molded base body is sleeved with a plastic film, and a beta-Al2O3 biscuit is obtained through demolding after isostatic pressing machining; Step (5), the beta-Al2O3 biscuit is subjected to plastic removal and then high-temperature sintering, and the beta-Al2O3 ceramic electrolyte separator is obtained.

The invention relates to a preparation method of zirconium oxide fibers. The preparation method comprises the following steps: preparing a precursor zirconium sol spinning solution from basic zirconium carbonate, zirconium oxychloride, glacial acetic acid, yttrium nitrate and deionized water, carrying out centrifugal spinning or electrostatic blowing to obtain zirconium oxide gel fibers, and carrying out high-temperature heat treatment to obtain zirconium oxide fibers with the diameter of 1-6[mu]m. Acording to the method, zirconium oxychloride and basic zirconium carbonate which are low in price on the market are adopted as raw materials, hydrolysis of zirconium oxychloride and the adding amount of glacial acetic acid are controlled through basic zirconium carbonate, the PH value of sol is accurately adjusted, excessive use of glacial acetic acid is avoided, zirconium oxide fibers are obtained through adoption of a centrifugal thread throwing method or an electrostatic blowing method, the preparation process is easy to operate, operation is easy, the cost is low, and large-scale production is easy.

The invention discloses a method for preparing guaiacol. The method comprises two steps of firstly, putting cyclohexene oxide and methyl alcohol into a fixed bed reactor with supported solid acid catalyst according to a certain proportion, continuously reacting under inert gas protection so as to obtain o-methoxyl cyclohexanol; secondly, diluting the o-methoxyl cyclohexanol with inert gas, then passing through a dehydrogenation catalyst bed activated by H2, rectifying a coarse product so as to obtain the guaiacol. The method has the characteristics that the raw material has low cost, atom economy is high, yield of the product is high, and the separation technology is simple.

The invention discloses a surface strengthening treatment method for a gradient pure copper material, and belongs to the technical field of metal material processing. The method comprises the following steps that the pure copper material is annealed at the temperature of 600-700 DEG C for 1.5-2.5 hours, and single-side surface nanocrystallization treatment is carried out on the annealed pure copper material by adopting mechanical grinding at room temperature or in a liquid nitrogen environment so as to prepare the gradient nano pure copper material with high strength, high plasticity and goodstability. The method has the advantages that the preparation process is simple, and a sheet with the plasticity improved by 10% or above of a gradient pure copper material prepared through double-sided surface nanocrystallization and with relatively high strength can be obtained; and the prepared high-strength and high-plasticity pure copper material has wide application space in the fields of rapid-developed electronic communication, aerospace, machinery and the like.

The invention relates to a wet-processing firing method of ceramsite by using cow dung and belongs to the technical field of ceramsite production. The method comprises steps of raw material mixing, granulating, pretreatment, high temperature burning, and cooling. The produced ceramsite has the advantages of small density, many pores, uniform morphology and components, high strength, and wear resistant property, can prevent corrosion, freezing, and knocking, has a good insulation performance, can insulate heat and sound, is dampproof, and is suitable for the construction industry.

The invention discloses a chlorothalonil dry suspending agent and a preparation method thereof. The chlorothalonil dry suspending agent consists of chlorothalonil, a wetting agent, a dispersing agent, a disintegrating agent and an inert carrier. By the chlorothalonil dry suspending agent and the preparation method thereof, the problem that layered precipitates are generated easily after a water suspending agent is stored is solved; the defect of flying dust caused by dry granulation is avoided; and the problem of long disintegrating time of water dispersible granules prepared by an extrusion method in water is solved. Compared with other pelleting processes, the preparation process has the advantage of realizing continuous production easily.

The invention relates to a method for preparing a foaming agent of a foam fire extinguishing agent, and belongs to the technical field of environmental protection materials. The invention comprises the steps of stirring to remove slag, filtering, adding alkali, hydrolyzing, cooling and foaming. The method for preparing the foaming agent of the present invention is simple, low in cost, easy to realize continuous production, stable in product quality, stable, large in quantity, and fast in defoaming of the foaming agent can be obtained, does not pollute the environment, does not generate waste water, and the raw material is waste , can realize waste reuse.

The invention relates to a liquid alkali decomposition method of high-grade mixed rare earth ore concentrate. The liquid alkali decomposition method of the high-grade mixed rare earth ore concentrate is characterized by comprising the steps: mixing the high-grade mixed rare earth ore concentrate with REO being more than 60 percent by weight and a sodium hydroxide with the concentration being more than 60 percent by weight and performing reaction on the mixed slurry at 150 to 160 DEG C for 0.2 to 1 hour, wherein the weight ratio of the mixed rare earth ore concentrate to the sodium hydroxide is 1:(3.5-7.5); after reaction is finished, performing hot filtration at the temperature being more than 60 DEG C and washing an alkali cake obtained by filtration with water until the pH value is 7; and dissolving the alkali cake which is washed until the pH value is 7 with hydrochloric acid of 6 to 10 mol/L and controlling the pH value to be 4 to 5 to obtain a pure rare earth chloride solution. The liquid alkali decomposition method of the high-grade mixed rare earth ore concentrate has the advantages that high-concentration liquid alkali reaction is conducted under the condition of high alkali-ore ratio, so the system is high in flowability, small in alkali concentration change, high in reaction temperature, insusceptible to fluctuation and short in reaction time, continuous production is realized easily, the problem about continuous industrial production of the liquid alkali decomposition process of the high-grade mixed rare earth ore concentrate is solved, and continuous production of the alkali decomposition process is realized.

The invention relates to the field of catalyst preparation, and discloses a mixing device for mixing catalyst carrier raw materials, and a mixing method thereof. The mixing device for mixing the catalyst carrier raw materials comprises: a mixing chamber (1), wherein the mixing chamber (1) is defined by an upper sealing cover (11), a lower sealing cover (13) and a barrel (12); a stirring unit (2) comprising a main shaft (21), a connecting shaft (22) and a stirring paddle (23), wherein the main shaft (21) penetrates through the upper sealing cover (11) and is connected with the connecting shaft (22), and the stirring paddle (23) is arranged on the connecting shaft (22); a feeding hole (3) formed in the upper sealing cover (11); a liquid inlet (4) formed in the upper sealing cover (11); and a discharge hole (5) formed in the lower sealing cover (13). According to the invention, the invention provides the mixing device capable of realizing uniform, automatic and clean mixing process of the catalyst carrier raw materials, and the method using the mixing device.