43results about How to "Improve electricity efficiency" patented technology

The invention discloses a compressed air energy storage spherical tank inversion operation system and method, and belongs to the technical field of energy storage, and the compressed air energy storage spherical tank inversion operation system comprises an energy storage system of a plurality of energy storage spherical tanks connected in parallel, a constant pressure system connected with the energy storage spherical tanks, and two wall temperature control devices connected with the energy storage system in parallel, the wall temperature control device comprises a low-temperature regulation and control device and a high-temperature regulation and control device, and a low-temperature water inlet main pipeline and a high-temperature water inlet main pipeline are connected with a plurality of energy storage spherical tanks of the energy storage system respectively in the flowing direction of high-temperature water and low-temperature water. A water outlet pipe of the energy storage spherical tank is connected with a low-temperature regulation and control device and a high-temperature regulation and control device through pipelines, the low-temperature regulation and control device is connected with a high-temperature water inlet pipe through a low-temperature mixed water bypass, and the high-temperature regulation and control device is connected with a low-temperature water inlet pipe through a high-temperature mixed water bypass. And the low-temperature regulating device and the high-temperature regulating device are simultaneously connected with the heat exchanger respectively.

The invention provides a method and device for a virtual power plant to participate in market transaction, and the method comprises the steps: solving a target response amount by taking a minimum cost function as an optimization target after constructing the virtual power plant, determining a target excitation compensation price based on the target response amount and the minimum cost function value, and then taking a maximum preset benefit function as an optimization target, based on the target response amount and the target excitation compensation price, the target electricity purchase and sale amount and the target peak load shifting amount are solved, the electricity utilization cost of the virtual power plant is minimized, the economic benefit of the virtual power plant is maximized, the electricity utilization experience of a user is improved, and in addition, the target response amount and the target excitation compensation electricity price are obtained through the minimum electricity utilization cost. The enthusiasm of the user to change the power demand is improved, the power shortage condition is relieved, the abnormal power utilization condition caused by the power shortage is avoided, and the power utilization efficiency is improved.

The embodiment of the invention provides a control device, method and system for a vehicle-mounted refrigerator and an automobile, and the control device for the vehicle-mounted refrigerator comprises a machine learning model module which is used for obtaining historical data in a historical time period and real-time data at a first moment; the training module is used for training a machine learning model of the machine learning model module based on the historical data, so that the machine learning model is converged; the prediction module is used for predicting the temperature change in the vehicle-mounted refrigerator after the first moment based on the real-time data so as to obtain a prediction result; the calculation module is used for calculating the gas supply quantity Qcol and the supply time tcol which need to be adjusted by the flow control module based on the prediction result; and the adjusting module is used for enabling the flow control module to control the temperature in the vehicle-mounted refrigerator to reach the set target temperature Tset in the vehicle-mounted refrigerator at the second moment based on the gas supply amount Qcol needing to be adjusted and the supply time tcol. According to the embodiment of the invention, the problem of high burden of an automobile caused by high energy consumption of a vehicle-mounted refrigerator used in the prior art is solved.

The invention discloses an energy efficiency optimization management method and system for power terminal users, and relates to the technical field of energy management. The method comprises the following steps: acquiring a power utilization data set; synchronizing to a time sequence prediction channel to carry out power consumption prediction on a power terminal user, and determining a plurality of power demand prediction data; determining a plurality of power utilization behavior modes; performing power utilization analysis, and formulating a first power utilization management strategy; simulating execution of the first power consumption management strategy to perform multi-target feedback, generating a feedback response data set, dynamically adjusting the first power consumption management strategy, determining a power consumption optimization management strategy, and performing self-adaptive optimization management of power consumption energy efficiency on a power terminal user. The technical problem that in the prior art, power terminal user energy efficiency management lacks real-time adjustment capacity is solved, self-adaptive optimization management is achieved by constructing a power utilization collection network, a time sequence prediction channel and a dynamic adjustment strategy, and the technical effect of improving the power utilization efficiency of power terminal users is achieved.

The invention relates to an intelligent photovoltaic curtain wall which has the function of adjusting light transmission intensity. The surface of the photovoltaic curtain wall is fully covered by the photovoltaic module, the supporting body is installed behind the photovoltaic battery module, and the photovoltaic module is fixed on the supporting body through the module fastener. Air hole channels are arranged among the photovoltaic modules to adjust temperature, and air holes can be connected with external constant-temperature systems such as a central air conditioner, so that the photovoltaic curtain wall has good constant-temperature capability. The photovoltaic cell is located between the guide rails, and the controller controls the driving motor to achieve movement of the cell position, so that the light transmission intensity is adjusted in good time. A mechanical arm and a control motor are arranged in the photovoltaic cell storage box and used for storage and output of photovoltaic cells, and the control motor receives instructions of the controller to operate. The controller is connected with the driving motor and the control motor through data lines, the shielding area ratio of the photovoltaic cell is automatically adjusted according to user requirements, and automatic adjustment of the light transmission intensity is achieved.

The invention discloses a convolutional neural network load identification method based on an improved VI trajectory, and relates to the technical field of power load identification. On the basis of obtaining an independent load current waveform, a voltage waveform is combined, a traditional single-cycle VI track is improved into a mode of drawing a multi-cycle VI track, meanwhile, instantaneous power, a current change rate and average value characteristics of multi-cycle current effective values are introduced, dual color coding improvement of the VI track and the background of the VI track is achieved, and the multi-cycle VI track is obtained. Therefore, the load characteristic characterization capability contained in the VI track is improved. And taking the improved VI track as the input of a VGGNet network framework in the CNN to realize load identification. Aiming at the influence of VGGNet network hyper-parameters on the identification precision, a particle swarm optimization (PSO) algorithm is selected to optimize the hyper-parameters in a network training process so as to improve the load identification accuracy of the model.

The invention provides a regional electricity consumption prediction method based on industry division, and belongs to the technical field of energy management, and the method comprises the steps: determining a prediction time range, collecting regional historical electricity consumption data, dividing each industry, calculating the total electricity consumption proportion of each industry, and obtaining a regional industry structure. Evaluating the change condition of the industrial structure in combination with related policies, judging the first influence of the change condition on the power demand, carrying out the first prediction of the regional power consumption based on the influence and the historical power consumption proportion, collecting the data of external factors influencing the power demand, and quantifying the second influence of the factors on the power demand; the first prediction result and the second prediction result are integrated to form a comprehensive prediction model, so that regional power consumption prediction based on industry types is realized, changes of an industrial structure and an external environment are quickly responded, the flexibility and the response speed of a power system are improved, and the power consumption prediction efficiency is improved. And the configuration and scheduling of power resources are optimized.

The boron diffusion furnace comprises a furnace body, a furnace door, a bearing assembly and a flow equalizing plate set, and the bearing assembly is arranged in a furnace cavity of the furnace body; the flow equalizing plate set comprises a first flow equalizing plate close to the air inlet pipe and a second flow equalizing plate close to the bearing assembly, a through hole and a plurality of first through grooves are formed in the first flow equalizing plate in a penetrating mode, and the air outlet pipe penetrates through the through hole; the second flow equalizing plate is rotationally connected with the inner wall of the furnace cavity of the furnace body, a sliding groove and a plurality of second through grooves are formed in the second flow equalizing plate in a penetrating mode, and the air outlet pipe is slidably connected with the sliding groove. Therefore, the flow field distribution can be improved by introducing the pore-adjustable flow equalizing plate group, the uniform distribution of gas in the furnace body is realized, the doped gas carried by the gas can be uniformly deposited on the surface of a silicon wafer, and meanwhile, the furnace tube is maintained in a low-pressure state and is matched with the gas flowing at a constant speed, so that the uniformity of the silicon wafer is improved. And the diffusion uniformity of the silicon wafers at the front, middle and rear positions in the quartz boat is further improved, so that the square resistance of the silicon wafers is reduced, and the electric efficiency is improved.

The patent application of the invention provides a method and system for analyzing the influence rule of business expansion change on power demand, and the method comprises the steps: classifying the user groups of business expansion change according to the business type of business expansion change; based on the business expansion change data, obtained after classification, of the various user groups, an actual commissioning proportion calculation formula is adopted to calculate the actual commissioning proportion of the various user groups; according to the actual commissioning proportion of each user group, a characteristic decomposition technology is combined with a regression analysis method to calculate the monthly trend commissioning proportion and the target production time of each user group; according to the month-by-month trend commissioning proportion and the target production time of each type of user group, summarizing an influence rule of each type of business expansion change on the electricity demand; according to the method, the influence of the business expansion change business on the increase of the electricity demand is reflected, the sequential relationship between various business expansion changes and the electricity demand is analyzed, the change trend of the electricity demand is extracted and analyzed, and a scientific basis is provided for accurately summarizing the business expansion influence rule of different user groups.

The invention aims to provide an integrated bidirectional super charging pile based on medium-voltage power supply and an implementation method. The system comprises a medium-voltage isolation transformer, a bidirectional inverter, a reactive compensation module and a charging terminal. The primary side of the medium-voltage isolation transformer is connected with a medium-voltage power grid, the medium-voltage isolation transformer comprises a primary winding or a plurality of secondary windings, and the alternating current input end of the bidirectional inverter is connected to the secondary windings of the medium-voltage isolation transformer; the reactive compensation module is connected in parallel with a secondary winding of the medium-voltage isolation transformer, and the capacity required by the reactive compensation module is used for compensating reactive power generated during no-load operation of the medium-voltage isolation transformer; the input of the charging terminal is connected to the DC output of the bidirectional inverter. The system is applied to the technical field of charging pile open source control, and has the advantages that the structure is simple, the requirement of a super charging pile is met, medium voltage can be fully utilized for direct power supply, the overall power utilization efficiency is improved, and cost and noise are reduced.

The invention provides a camp charging and discharging control system and a vehicle. The camp charging and discharging control system comprises a junction box, an in-vehicle charging seat, a vehicle-mounted charger, a charging control unit, an intelligent cabin area controller and a battery management unit, and the in-vehicle charging seat can be electrically connected with a slow charging seat through the junction box; the vehicle-mounted charger can be electrically connected with the slow charging seat through the junction box; the junction box can collect load power information of the in-vehicle charging seat; the charging control unit distributes charging power input by the slow charging seat to the in-vehicle charging seat and the vehicle-mounted charger according to a preset power distribution rule; the charging control unit detects a double-gun charging instruction from the battery management unit and controls the junction box relay to be closed, so that the in-vehicle charging seat can charge the vehicle-mounted charger through the junction box. According to the invention, the power utilization efficiency in the vehicle can be improved, the influence of power utilization in the vehicle on the electric quantity of the battery pack is reduced, charging type double-gun charging can be realized, and the power utilization efficiency of the vehicle is improved.

The invention discloses a device energy saver and method based on idle power rate electric energy recovery, and belongs to the field of intelligent electric power, and the method comprises the following steps: determining a classification result of loss points based on the loss conditions of electric equipment and an electric circuit; obtaining reactive power and residual current of the loss point based on the classification result of the loss point, and configuring a corresponding power-saving module for the loss point; and recovering the reactive power and the residual current, and adjusting the power-saving module based on the reactive power and the residual current.

The invention relates to a titanium-based manganese dioxide gradient composite electrode plate for non-ferrous metal electrodeposition and a preparation method of the titanium-based manganese dioxide gradient composite electrode plate, and belongs to the technical field of non-ferrous metal electrodeposition. The electrode plate comprises a titanium-clad aluminum conductive beam, an aluminum-copper composite conductive head, a titanium-clad aluminum transition titanium plate and a manganese dioxide gradient composite electrode plate, and the manganese dioxide gradient composite electrode plate comprises longitudinal conductive reinforcing ribs, crossed conductive reinforcing ribs, transverse conductive reinforcing ribs and a titanium-based manganese dioxide composite screen plate. Each of the longitudinal conductive reinforcing ribs, the crossed conductive reinforcing ribs and the transverse conductive reinforcing ribs sequentially comprises a titanium-coated aluminum matrix, an alpha-PbO2 composite intermediate layer doped with nickel-coated aluminum powder and graphene oxide, and a gamma-MnO2-TiOx composite active layer doped with nano beta-MnO2 and nano Al2O3 from inside to outside; the titanium-based manganese dioxide composite screen plate sequentially comprises a titanium mesh substrate, a Ta-Nb-SiOx bottom layer, a Mn-Sn-Ti-AgOx bottom layer, an alpha-PbO2 composite middle layer VI doped with nickel-coated aluminum powder and graphene oxide and a gamma-MnO2-TiOx composite active layer VI doped with nano beta-MnO2 and nano Al2O3 from inside to outside.

The invention discloses a silver electrolysis device. The silver electrolysis device comprises: an electrolytic cell housing; the cathode conductive busbar is arranged on one side of the electrolytic cell shell; the anode conductive busbar is arranged on the other side of the electrolytic cell shell and is opposite to the cathode conductive busbar; the conductive block is connected with the cathode conductive busbar, and a protruding part is arranged on one side of the conductive block; the conductive beam comprises a conductive beam body and an anti-corrosion layer, one end of the conductive beam body is provided with a connecting part, the anti-corrosion layer is formed on the surface of the conductive beam body and is provided with a notch corresponding to the connecting part, and the protruding part penetrates through the notch and is connected with the connecting part. The silver electrolysis device can prevent the conductive beam from generating verdigris, so that the conductivity of the conductive beam is improved, the electrical efficiency of a system is improved, the anode scrap rate is reduced, and the problem that silver powder copper exceeds the standard is solved.

The invention relates to a manufacturing method of a permanent magnet power generator of a pure electric vehicle, which creatively fills up the following functions: (1) a technology which is equivalent to a secondary commercial power 220V / 50Hz alternating current power supply energy-to-electricity technology; the function (2) is equivalent to a secondary energy structure electronic power technology power engine'electricity-to-energy and electricity-to-electricity 'technology; the function (3) is equivalent to an energy-to-energy technology of a permanent magnet power automobile generator in a secondary energy structure electronic power technology, a DC power supply conversion technology of a DC / DC converter in energy recovery of an energy storage system, an inversion IGBT power module conversion control technology of a DC / AC converter, an electronic rectification technology of a silicon controlled rectifier charger, a DC filtering technology and a switching power supply technology. The invention relates to a technology blank of'energy-to-electricity and electricity-to-energy 'technologies converted by a silicon controlled rectifier control technology and a silicon controlled rectifier capacitive reactance load technology, new energy, new structures, new ideas, new methods and new technologies.

Disclosed in an embodiment is an optical device comprising: a plurality of lenses; a lens barrel in which the plurality of lenses are arranged; a first light guide disposed in the lens barrel; an opening formed in a side surface of the lens barrel; a light source device coupled to the opening; a through hole formed in a side surface of the lens barrel; and a light receiving portion disposed adjacent to the through hole.

The embodiment of the invention provides a photovoltaic panel power generation power prediction method and device, electronic equipment and a medium, the method is applied to equipment with a photovoltaic panel, and the method comprises the steps that input data are acquired, the input data comprise load power and weather data of the equipment, and the weather data comprise at least one of sunlight intensity, temperature and humidity; obtaining a photovoltaic panel generation power prediction model, wherein the photovoltaic panel generation power prediction model comprises an input layer, a hidden layer and an output layer; the input layer is used for receiving input data; the hidden layer is used for outputting feature data according to input data and preset hidden layer parameters; the output layer is used for outputting a predicted value of the generated power of the photovoltaic panel according to the feature data and preset output layer parameters; and inputting the input data into the input layer to obtain a predicted value of the generated power of the photovoltaic panel output by the output layer, thereby improving the accuracy of photovoltaic generated power prediction.

An electric power converter is electrically connected to an electric storage device. The electric power converter includes a control unit that, according to the voltage measured by the electric power converter, refers to, as the output target for the electric storage device, a reference function which has a drooping characteristic and which represents a control target function. The reference function has a constant-input-output region over a predetermined voltage range, and is updated based on the battery status of the electric storage device.

The invention discloses a thermal management system, an operation method of the thermal management system and a vehicle applying the thermal management system, and relates to the technical field of thermal management systems. The system selectively enters one of the following operation modes: a cab refrigeration mode, a battery pack refrigeration mode, a cab and battery pack refrigeration mode, a battery pack heating mode, a battery pack self-circulation heat dissipation mode, an electric energy conversion component heat dissipation mode and a battery pack and electric energy conversion component low-temperature heat dissipation mode. A cab heating mode and a waste heat utilization type battery pack heating mode. The invention mainly solves the problem of how to provide a thermal management system for a new energy automobile. The system has the advantages of being high in integration degree, rich in function, multiple in operation mode, high in reliability, good in controllability, high in power utilization efficiency and good in economical efficiency, and therefore the performance, stability and comfort of the vehicle are improved, and the service life of the vehicle is prolonged.

The utility model discloses a control circuit capable of improving battery utilization rate. The control circuit comprises a power supply module, a boost module, a power supply selection switch module and a load. The power supply module is used for supplying power to a post-stage circuit; the boosting module is used for boosting the output voltage of the power supply module to the voltage required by a load when the output voltage of the power supply module is under-voltage; the power supply selection switch module is used for detecting the output voltage of the power supply module in real time, the boosting module is closed when the output voltage of the power supply module is normal, and the power supply module supplies power to a load; when the output voltage of the power supply module is under-voltage, the boost module is turned on, and the boost module supplies power to a load. The utility model provides the control circuit capable of improving the utilization rate of the battery, the utilization rate of the battery can be greatly increased, the service life of a small-sized battery is prolonged, related circuit functions can be realized by using extremely few components with higher cost performance, and the use cost is saved.

The invention relates to an automatic control system and method for adjusting the solution concentration according to the voltage of a rotational flow electrolytic cell. The technical problems of low control precision, poor stability and the like in the prior art are solved. Comprising a front liquid storage tank, the front liquid storage tank is connected with a solution circulating tank through a first conveying assembly, the solution circulating tank is connected with a rotational flow electrolytic cell set through a second conveying assembly, and a pressure monitoring assembly is further arranged between the second conveying assembly and the rotational flow electrolytic cell set. The first conveying assembly, the second conveying assembly, the flow monitoring mechanism, the pressure monitoring assembly, the liquid level monitoring mechanism and the temperature monitoring assembly are all electrically connected with the central controller, and the rotational flow electrolytic bath set is connected with a rotational flow electrolytic bath voltage and temperature detection device connected with the central controller. The system has the advantages that by adopting multi-parameter linkage and the central controller, the concentration of the electrolyte is accurately regulated and controlled, and the concentration of the solution is reversely regulated by monitoring the voltage change of the electrolytic bath, so that the electrolytic process is always in an efficient and stable state.

The invention relates to the technical field of switching power supplies, and discloses a two-stage active power factor correction circuit and a switching power supply in order to solve the problems of low power factor and high harmonic pollution caused by the fact that the input of the switching power supply is alternating current. The circuit comprises an electromagnetic interference filter, a rectifier bridge, a PFC booster circuit, an LLC half-bridge resonance compensation circuit and a controller which are connected in sequence. The PFC booster circuit is used for boosting the voltage output by the rectifier bridge to the high-voltage direct-current bus voltage; the LLC half-bridge resonance compensation circuit is used for converting the high-voltage direct-current bus voltage output by the PFC booster circuit into stable low-voltage direct current required by a load by adjusting the switching frequency of the LLC half-bridge resonance compensation circuit; the controller is used for controlling the working mode of the PFC booster circuit according to the magnitude of the output current of the LLC half-bridge resonance compensation circuit; meanwhile, the output voltage of the LLC half-bridge resonance compensation circuit is sampled, and the switching frequency of the LLC half-bridge resonance compensation circuit is adjusted according to feedback of the output voltage. By adopting the circuit, the power utilization efficiency of power equipment is improved, and harmonic interference is reduced.

The invention discloses an anti-countercurrent energy-saving power supply system mainly based on photovoltaic and flexibly supplemented by grid power, which comprises a photovoltaic power generation assembly, the photovoltaic power generation assembly is connected with a photovoltaic / grid power direct-current grid-connected module, and the photovoltaic / grid power direct-current grid-connected module is further connected with a grid power voltage regulation rectifier module and a power taking control switch. The power output side of the photovoltaic / grid power direct-current grid-connected module is sequentially connected with a direct-current filtering module, a sine wave inverter and an alternating-current filtering and voltage-stabilizing module, the alternating-current filtering and voltage-stabilizing module is connected to a load electric appliance, and the power supply system further comprises a main controller and an operation module which are used for controlling a power supply mode and power utilization safety. According to the invention, photovoltaic electric energy can be fully utilized to the greatest extent, an electric energy utilization concept of taking photovoltaic as a main part and taking grid power as an auxiliary part is realized, countercurrent prevention is realized through cooperation of the isolation diode and the grid power voltage regulation rectification module, intelligent flexible supplement of the grid power can be realized, and healthy development of the photovoltaic industry is facilitated.

The invention discloses a manufacturing method of a graphite anode for a rare earth electrolytic cell, which comprises the following steps of: 1, preparing an anode solution, namely adding a graphite flake into a chemical dissolving solution, and preparing the anode solution through a series of processing; step 2, preparing an anode bar: putting the prepared anode solution into an anode bar mold for drying and shaping, and demolding after natural cooling; step 3, product detection: the prepared anode bar is detected through ultrasonic flaw detection equipment, and an unqualified anode bar is placed in a graphite furnace to be treated and converted into a qualified anode bar; according to the method, unqualified products are detected to be placed in a graphite furnace to be processed, acnes caused by burning loss on the surfaces of the unqualified products of the anodes and residue protrusions and impurities of internal transverse cracks are effectively removed, the unqualified products of the anodes are converted into qualified graphite anode bars, and the percent of pass of production of the graphite anode bars is increased; and the preparation cost of the graphite anode is reduced.

The invention discloses a micro-grid optimization scheduling method based on an improved MOJAYA algorithm, and the method comprises the steps: firstly setting a micro-grid objective function and constraint conditions, and initializing a population: generating an initial population and an empty archive set; the initial population and the empty archive set are combined, the total fitness F (i) of all individuals in the combined set is calculated, the total fitness F (i) is composed of the original fitness R (i) and the congestion density D (i), and the archive set is updated; and finally, identifying an optimal individual and a worst individual through the total fitness F (i), and updating population individuals through an MH sampling method. Iteratively circulating, and finally outputting an archive set, individuals in the archive set representing the power generation output scheme of each micro power supply after optimization scheduling of the micro-grid. According to the method, the problems that in the prior art, a comprehensive micro-grid is poor in global search capability and prone to falling into local optimum are solved.

The present invention relates to the technical field of maintenance equipment, specifically a new type of tool cabinet, which includes a cabinet body. The cabinet body is provided with a storage cavity and a cabinet door. The storage cavity is in the structure of a box body with openings at both the top and the front. The spaces above the storage cavities on the same layer are in a communicating state, and the spaces above the storage cavities on different layers are communicated through the space at the rear of the cabinet body. A louver mechanism is provided at the top of the storage cavity, and a drying mechanism is provided in the space at the rear of the cabinet body; a through hole is opened at the front of the cabinet body at the closing position of the cabinet door. A bolt is movably inserted in the through hole. A U-shaped frame is fixedly provided on the inner wall of the cabinet body corresponding to the through hole. The tail of the bolt penetrates through the U-shaped frame. A ring plate is fixedly provided on the outer wall of the bolt. A compression spring is sleeved outside the bolt and between the U-shaped frame and the ring plate. A connecting rod is provided in the cabinet body and behind the tail of the bolt, and the connecting rod is connected to the louver mechanism. When the cabinet door is not closed in the present invention, the louver mechanism is closed, avoiding gas exchange between this storage cavity and other spaces in the cabinet body, and improving the power consumption efficiency.

The application discloses a kind of energy game regulation and control method and equipment based on multi-region sharing.The method comprises the following steps: constructing energy sharing subject model, including the power consumption comprehensive benefit model of producer and consumer and the income model of energy operator;Energy operator obtains scheduling result with maximum income as objective function;Producer and consumer pursue greater income effect according to the regional internal electricity price provided by energy operator;Energy operator pursues smaller operation cost according to the scheduling result of shared energy storage system;If the game decision result of producer and consumer and energy operator does not change, the transaction result is taken as the final energy transaction regulation scheme, otherwise return to continue iteration.The application provides a technical scheme for power system operation management under the background of the vigorous development of new energy and shared energy storage, enhances inter-regional energy sharing and promotes renewable energy consumption.

A multimode laser (1) is characterized by comprising: a semiconductor amplifier (2); and a laser resonator (7) that is configured between the semiconductor amplifier (2) and a loop mirror (6) that is configured from a waveguide formed on the semiconductor substrate (3), the characteristic shape of the reflectance of the loop mirror (6) being convex in the oscillation wavelength range.

The present application relates to solid waste resource comprehensive utilization technical field, disclose a kind of calcination desulfurization-electric furnace reduction processing laterite nickel ore acid leaching residue method, comprising the following steps: S1.laterite nickel ore acid leaching residue and auxiliary material are used as raw material, oxygen-enriched air and first fuel are introduced into raw material to carry out calcination desulfurization, obtain sulfur-containing flue gas and desulfurization hot slag;S2.desulfurization hot slag obtained in S1 with second reducing agent is directly put into electric furnace and is reduced smelting, obtain molten iron, reduction smelting flue gas and reduction smelting slag, desulfurizer is added to the molten iron and is desulfurized, and iron ingot is prepared;S3.reduction smelting slag is obtained after water quenching treatment water quenching slag, the water quenching slag is mixed with excitation agent, after drying, grinding, obtain active micro-powder material.This method realizes laterite nickel ore acid leaching residue full resource comprehensive utilization, fully recycles residual valuable metal including Fe, Ni, realizes the full development and utilization of valuable metal, sulfur, tailings and other slag components.

An NMR device (10) having an NMR magnet system for generating an NMR magnetic field, the NMR magnet system including an NMR coil (11) for modifying the magnetic field, and the NMR device having a stable and low-noise current source supplying current to the NMR coil, the current source including a linear current regulator (12) electrically connected to a first end of the NMR coil, characterized in that the current source includes a digital voltage source (13) employing switching technology, the digital voltage source being electrically connected to a second end of the NMR coil such that the NMR coil is connected as an electrical load between the linear current regulator and the digital voltage source, and the current regulator (12) is connected to the digital voltage source (13) via a regulating line (14) for regulating voltage, and the linear current regulator regulates the digital voltage source such that the voltage on the linear portion side of the arrangement is within a preselected operating range, thereby consuming as little electrical power as possible in the linear portion of the arrangement. Thus, the NMR coil can be regulated with high electrical efficiency and supplied with current stably and with low noise, wherein the uniformity of the NMR coil remains stable and constant even under changing external conditions.