45results about How to "Economic unity" patented technology

The invention discloses a formula and a production technology of a saggar for firing a cathode material for a lithium battery. The formula comprises a surface composite layer formula and a sagger mainbody formula, wherein the surface composite layer formula comprises the following components in percentage by mass: 18 to 22 percent of zircon sand with 200 meshes, 8 to 10 percent of superfine zircon sand with 8000 meshes, 16 to 20 percent of alumina powder with 800 meshes, 16 to 23 percent of cordierite with 100 meshes or below and 30 percent of Suzhou kaolin with 325 meshes; the sagger main body formula comprises 8 to 12 percent of cordierite with 8 to 16 meshes, 20 to 24 percent of cordierite with 16 to 60 meshes, 3 to 7 percent of cordierite with 60 to 100 meshes, 1 to 5 percent of cordierite with 100 meshes or above, 9 to 12 percent of mullite with 16 to 60 meshes, 18 to 22 percent of alumina powder with 800 meshes, 25 percent of No.2 hand-selected Suzhou kaolin with 325 meshes and3 to 5 percent of yellow dextrin. The formula and the production technology disclosed by the invention have the beneficial effects that firstly, in the formula of the saggar, the zircon sand is used to replace ZrO2, and the price of the zircon sand is relatively low, so that the production cost of the saggar is greatly reduced; secondly, the saggar prepared by adopting the formula and the technology disclosed by the invention has a zircon sand composite layer and higher corrosion resistance; thirdly, the economy and the high performance are perfectly unified.

The invention discloses a manufacturing method of a graphite-contained high-speed steel centrifugal composite steel core roller, and belongs to the field of mechanical casting. Chemical elements of B and N are introduced in a traditional high-speed steel component, MC type and / or M2C type dotted and / or blocky high-hard alloy carbides, nitrides and borides with the total area percentage of 20% to 35% are dispersed and distributed in a work layer base body structure; through carbide, nitride and boride modification, graphite is subject to two-step treatment of modification and inoculation, graphite is precipitated in an original structure, and therefore the high-speed steel roller has the advantages of the specific high-temperature wear resisting of traditional high-speed steel and meanwhile the problem that an original traditional high-speed steel roller is large in friction coefficient is solved; wear-resisting performance of the high-speed steel is fully developed, the lubricating effect between the roller and a workpiece in the rolling process is achieved, and happening of the steel bonding phenomenon is avoided; due to the heat conduction performance and the lubricating characteristic of graphite, the defects that the high-speed steel roller is sensitive to hot impact and hot-cracking susceptibility, steel bonding is prone to happening, and surface roughing is prone to happening can be overcome, and particularly when a finished product rack is used, the surface bright degree of a rolled material is obviously improved.

The invention discloses a method for recycling of soybean whey wastewater by a membrane separation technology. The method includes: sterilization pretreatment; flocculation and centrifugal separation for impurity removal; whey protein recovery by ultrafiltration membrane continuous separation; whey protein powder recovery; oligosaccharide syrup recovery by nanofiltration membrane continuous concentration; oligosaccharide recovery; and dialysis water recovery by reverse osmosis membrane continuous concentration. The method provided in the invention can avoid whey wastewater rancidity and ultrafiltration membrane pollution and plugging, and improves the product quality. Employment of the continuous separation concentration mode reduces stay of intercepted objects or protein, impurity concentrated liquors in a membrane assembly to the utmost, and back-and-forth circulation between a membrane liquid inlet tank and a membrane system no longer exists. Meanwhile, the membrane surface flow speed is controlled, so that the problems of membrane pollution and low separation efficiency are solved. An osmosis filtration membrane washing process is adopted, and water is added automatically for filter wash, so that the membrane pollution and plugging problems are solved, and the product quality is improved. The selection of high temperature resistant hydrophilic membrane materials guarantee a high water flux and help to reduce membrane pollution.

The invention discloses a method and a device for configuring a phase modulator of a high-capacity VSC converter station. The method comprises the following steps of: collecting a response curve of active power of a VSC-HVDC system about time in each expected fault, and a response curve of the active power of the VSC-HVDC about the time in each expected fault when phase modulators with different quantities are configured; calculating the effect indexes of the configured phase modulators for improvement of the VSC-HVDC system alternating current fault ride-through capacity according to the response curves; calculating the effect-cost comprehensive evaluation indexes of the configured phase modulators for improvement of the VSC-HVDC system alternating current fault ride-through capacity according to the effect indexes; and selecting the optimal configuration quantity of the phase modulator according to the effect-cost comprehensive evaluation indexes. The method and a device for configuring a phase modulator of a high-capacity VSC converter station achieves the unification of the safety and the economy of the phase modulator configuration and provides a technical idea for the near-zone dynamic reactive compensation configuration of the high-capacity converter station.

The invention discloses a water recycling process used in a copper-based catalyst production process. The invention belongs to the technical field of copper-based catalyst preparation. According to the invention, a sodium nitrate aqueous solution obtained by precipitation and filtration of the copper-based catalyst, and a sodium nitrate aqueous solution obtained in a filter cake washing process are processed through a water-processing system with reverse osmosis as a core processing manner; when fresh water reaches a reutilization standard, the fresh water is reutilized in a production line; and concentrated sodium nitrate aqueous solution is subjected to multi-effect evaporation, such that a sodium nitrate product is obtained. The technology is suitable to be used in production processes of copper-based catalyst used in methanol synthesis, methanol cracking hydrogen production, gas-phase dehydrogenation, gas-phase hydrogenation, carbon monoxide low-temperature shift, and the like.

The invention relates to a control method of a clutch based on revolving speed and belongs to the field of clutch control. The control method provided by the invention is characterized that a clutch MAP figure control strategy is adopted in slipping stage of a clutch, the MAP figure lookup calculation is carried out according to the revolving speed difference of an output torque of the clutch and the input shaft of the clutch and the output shaft of the clutch, thereby controlling the position of the clutch; and driving intention of a driver is judged to output a clutch rotation speed target value curve according to the size and variable rate of an engine throttle; the D-value of the target value and actual value of the clutch revolving speed is calculated by virtue of PID (proportion integration differentiation), the position of the clutch is subjected to fine tuning, thereby meeting different driving intentions and travelling conditions. Compared with fuzzy control and a neural network, the control method provided by the invention has the advantages of small computational load, simple structure, and strong control instantaneity, and overcomes the delay problem of a controller singlechip caused by complicated control, and overcomes the influence from the variation in load of vehicles on the combined process; the dynamic property and economy of the automobile are unified by virtue of building MAP on a great deal calibration test, and the relation of the parameter characteristic and control objective in control process is clear and definite.

The invention provides a steel slag modifier with structural grinding aid and surface coating functions and a preparation method thereof. The steel slag modifier with the structural grinding aid and surface coating functions comprises the following raw materials, by weight, 5.0%-20.0% of ethylene glycol, 5.0%-20.0% of triisopropanolamine, 5.0%-20.0% of triethanolamine, 35.0%-70.0% of liquid paraffin and 15.0%-50.0% of kerosene. Compared with the prior art, the steel slag modifier are compounded by the raw materials, the stirring temperature, the stirring speed and the stirring time are controlled, a steel slag compounding agent with the structural grinding aid and surface coating functions is obtained, and the obvious effects on improving the grindability and dispersibility of steel slag are achieved. According to the steel slag modifier with the structural grinding aid and surface coating functions and the preparation method thereof, the energy consumption of steel slag grinding can be reduced, the production process is environment-friendly and pollution-free, furthermore, the components are simple, the cost is low, the unification of economy and environment friendliness is realized, the economic benefit and social benefit are obvious, and the popularization and application of steel slag ultrafine powder are facilitated.

The invention provides a steel plate concrete shear wall column reinforcement design method which comprises the following steps: firstly, analyzing and calculating an overall structure model to obtaina design internal force, an axial force, a bending moment and a shear force of each wall column; calculating the axial compression ratio of the wall column, and determining the type of an edge component so as to determine the minimum value of the corresponding construction measure requirement; determining the profile steel area Aa configured in the shadow part of the edge component; determining the area Ap of a steel plate configured in the shear wall according to the shear section limit value condition, and determining the type of a calculation formula according to the numerical range of theAp; determining the reinforcement ratio of the vertical distribution bars of the wall column; checking and calculating the bearing capacity of the normal section, obtaining the area As of the longitudinal reinforcing steel bars configured in the shadow part of the edge component by taking the larger value of the bias voltage and bias tension calculation result, and determining the calculation mode according to whether As exceeds the limit or not; calculating the shear capacity of the oblique section to obtain the area Ash of the horizontally distributed steel bars of the shear wall, and determining the calculation mode according to whether the area Ash of the horizontally distributed steel bars of the shear wall exceeds the limit or not.

The invention discloses a method for computing an optimal anchoring angle of a rock slope wedge, and belongs to the technical field of analyzing the stability of a rock slope and strengthening the rock slope. A security coefficient of the wedge-shaped slope serves as an objective function, the angle and the direction of anchoring force serve as optimization variables, constraint conditions such as the balance equation of the wedge, the yield condition of a structural surface and the boundary condition are combined, and the method which is used for computing the optimal anchoring angle of the wedge and can maximize the security coefficient is provided. The computing method can compute and obtain the optimal anchoring angle of the wedge accurately, easily and conveniently, has the advantages of being clear in concept, high in computing accuracy and the like, and brings convenience for engineering technicians to carry out optimal design for strengthening the wedge so as to achieve the purpose of being safe and economical.

The invention discloses a digger engine auto idling control method, characterized in that: setting engine sub-target speed lower than working-state target speed by 50-300r / min; setting high idling speed higher than low idling speed by 300-500r / min; setting precursor pressure threshold valve 5-20 Pa; setting first idle time and second idle time; in the working state, when precursor pressure is zero and lasts the first idle time, regulating to high idling state and lasting the second idle time, and then regulating to low idling state; when precursor pressure is greater than zero and less than the precursor pressure threshold, regulating the engine to the sub-target speed and when greater than the precursor pressure threshold, regulating the engine to the target speed. And the invention adopts two-stage speed reduction, overcoming the defect of high energy consumption caused by big rise and fall of engine speed; and uniting engine power, economy and quickness.

The invention discloses a method for calculating the optimal excavation slope ratio of a mine slope. The invention takes the mine slope as the research object, and establishes a multi-objective optimization non-linear mathematical programming model for the stability, safety and excavation economy of the mine slope. The model takes the maximum value of the safety factor and the maximum value of the excavation benefit as the objective function; and takes the excavation slope rate, the shear force and the normal force of the structural surface as the decision variables, and the balance equation constraints of the slope sliding mass , The yield condition of the structural surface is a constraint condition, and the gravity function constructed in the constraint condition can change with the change of the excavation slope rate, so that the constraint condition of the limit equilibrium of the slope sliding mass can be well connected with the mine slope Safety and economy, thus more in line with the actual mine slope excavation requirements; through the method of the present invention can directly obtain the optimal excavation slope ratio of the mine slope, so that the excavation benefit is the highest while the stability and safety factor is the largest, thereby achieving Unification of excavation economy and stability and safety.

The invention discloses a manufacturing method of a graphite-contained high-speed steel centrifugal composite steel core roller, and belongs to the field of mechanical casting. Chemical elements of B and N are introduced in a traditional high-speed steel component, MC type and / or M2C type dotted and / or blocky high-hard alloy carbides, nitrides and borides with the total area percentage of 20% to 35% are dispersed and distributed in a work layer base body structure; through carbide, nitride and boride modification, graphite is subject to two-step treatment of modification and inoculation, graphite is precipitated in an original structure, and therefore the high-speed steel roller has the advantages of the specific high-temperature wear resisting of traditional high-speed steel and meanwhile the problem that an original traditional high-speed steel roller is large in friction coefficient is solved; wear-resisting performance of the high-speed steel is fully developed, the lubricating effect between the roller and a workpiece in the rolling process is achieved, and happening of the steel bonding phenomenon is avoided; due to the heat conduction performance and the lubricating characteristic of graphite, the defects that the high-speed steel roller is sensitive to hot impact and hot-cracking susceptibility, steel bonding is prone to happening, and surface roughing is prone to happening can be overcome, and particularly when a finished product rack is used, the surface bright degree of a rolled material is obviously improved.

The invention discloses a direct-current transmission line protection configuration setting method with the electromagnetic coupling relationship taken into consideration. The method comprises the step one of line fault analysis and judgment, the step two of protection starting, the step three of pole logic selection, the step four of disturbance elimination and the step five of boundary determination. According to the method, the situation of possible occurrence of faults of a high-voltage direct-current transmission line is objectively and accurately taken into consideration, influence on normal poles from the faulty poles due to the electromagnetic coupling relationship among polar lines is also taken into consideration, the problem that existing protection is not comprehensive enough is solved, the logic is adjusted without replacing hardware of original line protection, the engineering availability is high, the disturbance-resisting capacity of high-voltage direct-current transmission line protection to false operation possibly occurring due to the electromagnetic coupling relationship is improved, the sensitivity and the effectiveness to the line faults are enhanced, and the unification of the technicality and the economy and the unification of the reliability and the sensitivity of high-voltage direct-current transmission line protection engineering are achieved.

The invention discloses a manufacturing method of a graphite-containing high-speed steel roll and belongs to the technical field of mechanical casting. B and N chemical elements are introduced into a conventional high-speed steel component, and MC type and / or M2C type dotted and / or blocky high-hardness alloy carbide, nitride and boride with the total percentage of the area being 20%-35% are / is distributed in a matrix structure of a work layer; graphite is separated out of original tissue through two steps including modification of carbide, nitride and boride and metamorphic inoculation of graphite, so that the high-speed steel roll not only reserves the advantage of peculiar high-temperature wear resistance of conventional high-speed steel, but also solves the problem that an original conventional high-speed steel roll has a large friction coefficient, the wear-resisting property of the high-speed steel is sufficiently played, the lubricating function between the roll in rolling and a workpiece is realized, and the steel bonding phenomenon is prevented; by means of the heat conductivity and lubrication characteristics of graphite, the defects that high-speed steel rolls are sensitive to heat shock and heat cracking and are prone to steel bonding and surface texturing can be overcome, and particularly, when the graphite-containing high-speed steel roll is used in a finished rack, the brightness degree of the surface of the roll material is remarkably improved.