92results about How to "Achieve energy saving and efficiency" patented technology

The invention provides a method for determining an indicator diagram of electrical parameters of a rod-pumped well and belongs to the technical field of oil production of oil fields. The method aims at achieving convenient and practical measurement of the indicator diagram of the electrical parameters of the rod-pumped well on site. The method is characterized in that top dead center moments and bottom dead center moments are determined periodically, active powers of electrical parameters of up strokes and down strokes of the rod-pumped well are processed in a decomposition mode, and input end active power of the up strokes and the down strokes is obtained respectively and are calculated and converted into wellhead loading force; adjustment is conducted through balance blocks for operation balance of a pumping unit, actually measured data are used for further correcting the weights of the crank balance blocks of the oil pumping unit or retrieving the weights of the crank balance blocks after adjustment, actually measured active power is converted into wellhead loading force F<upper force i>, wellhead loading force F<lower force i> and superposed wellhead loading force F<upper and lower force i>, the wellhead loading force F<upper force i>, the wellhead loading force F<lower force i> and the superposed wellhead loading force F<upper and lower force i> are calculated, superposed and converted into wellhead loading force, and the indicator diagram of trends of the electrical parameters is determined before and after superposition with the crank balance blocks. According to the method, on-site testing is convenient and practical, and online automatic measurement is achieved.

The invention relates to an accurate predication control and energy saving system and method in a wet-process desulfurization technology. The accurate predication control and energy saving system comprises a field instrument signal acquisition system, an outlet concentration predication model, an optimization control system of an executing mechanism, and a continuous adjustment system of the executing mechanism, which are communicated in sequence, wherein the field instrument signal acquisition system is connected with a desulfurization tower; the field instrument signal acquisition system iscommunicated with the optimization control system of the executing mechanism; the continuous adjustment system of the executing mechanism is communicated with the field instrument signal acquisition system. According to the accurate predication control and energy saving system, intelligent control of a desulfurization process is realized by utilizing model predication and optimization calculation;a control level is improved and stable operation of the system is ensured; meanwhile, the energy consumption is reduced and the cost is reduced, so that energy saving and efficiency increasing of a wet-process desulfurization technology system are realized; the accurate predication control and energy saving system and method are applicable to fields adopting the wet-process desulfurization technology, such as thermal power plants, steel works and industrial coal-fired boilers.

The invention provides an automatic control method for the whole process of mineral processing, which is characterized in that a piece of signal acquisition equipment is arranged on a piece of conventional mineral processing technology equipment to form a control network system, and the network structure of the system is that: a control system adopts SIMATIC PCS redundancy automatic control system, and a communication network adopts industrial ethernet annular and redundancy ROFIBUS field bus; in various operation units, crushing expert intelligent control system software, mill fuzzy control system software, hydrocyclone fuzzy control system software and flotation intelligent expert automatic control system software are respectively used to perform data processing, and optimal control, optimal operation and optimal management are performed during the production process of concentrators. The invention has the advantages of enabling digital management in the concentrators, improving the automation level in the mineral processing production process, the yield and the quality of products, the comprehensive utilization ratio of resources and the equipment capacity, saving energy and improving efficiency.

The invention relates to the field of carbide slag recycling in calcium carbide method acetylene production, in particular to a method that after physical separation is performed on carbide slag impurities, a calcium hydroxide component in the carbide slag impurities is extracted, and then calcium carbide raw materials are produced through carbide slag. The method for producing the calcium carbide raw materials through the carbide slag mainly comprises the following steps of fresh carbide slag screening; magnetic separating; ore grinding; ore pulp preparing; suspension separating; dewatering; carbon mixing, wherein filter cakes which are obtained after dewatering is performed and contain certain moisture are mixed with carbon material particles of which the particle size is smaller than or equal to 2 mm and the fixed carbon content is larger than or equal to 70% in a mixing machine according to the mass fraction ratio of 1.63:1-2.91:1; granulating and forming; drying; calcining. According to the method for producing the calcium carbide raw materials through the carbide slag, the shortcomings and defects in the prior art can be effectively overcome, reclamation recycling of the carbide slag is achieved, the impurities in the carbide slag can be effectively removed, the technology is simple and convenient, and the economical efficiency and practicability are achieved.

The invention discloses a control method for a heat pipe secondary refrigerant loop server cabinet cooling system. The system comprises one or more heat pipe radiators, a server cabinet, a water supply branch pipe, a water return branch pipe, a machine room water supply main pipe, a machine room water return main pipe, an automatic water replenishing constant pressure device, a circulating water pump, a standby water pump, a heat exchange device, an outdoor refrigerant return connecting pipe, an outdoor air outflow connecting pipe, a refrigerant valve, an air valve, an air-cooled condenser and a control system. Natural cooling energy-saving measures are adopted in the air-cooled condenser. By the adoption of the control method, a server can be directly cooled, and the problems that a server cabinet is partially too hot and hot spots exist are solved; meanwhile, the natural cooling measures are utilized, the heat exchange temperature difference is large, efficiency is high, and the system has the advantages of being simple, reliable and low in power consumption and noise and meets the ideas of energy saving and environment friendliness.

The invention provides a garbage incinerator control system. The system comprises an incinerator and an automatic control module, wherein a data acquisition module is arranged on the incinerator and used for collecting combustion condition data related to control parameters of the incinerator, and the combustion condition data characterizes combustion conditions of the incinerator; the automatic control module performs collaborative optimization on at least two control parameters of the incinerator according to the combustion condition data to obtain optimized control parameters and automatically controls the incinerator according to the optimized control parameters. The garbage incinerator control system achieves the purposes of intelligence and adaptability of the incinerator and has theeffects of saving energy, increasing efficiency and improving operating economy.

The invention discloses a grain and oil processing production line energy management system and management method. The management system comprises a system management layer, a communication interface layer and a field monitoring layer; and the management method comprises energy metering management, energy performance management, energy analysis, energy monitoring, and energy data acquisition and processing. Real-time monitoring and comprehensive management of various energy media and key energy consuming equipment are realized by constructing the energy management system, production and use of various energy media and running conditions of various energy pipe networks and key energy consuming equipment can be timely learnt and mastered, scientific decision and accurate direction are realized, safe, reliable, economic and efficient operation is ensured, and the conversion from experiential to analytical scheduling function is realized.

The invention relates to the technical field of air-conditioning systems for data computer rooms, and discloses a natural cooling system adopting reverse-flow air heat exchange for a data computer room. The natural cooling system is applied to the data computer room, and comprises a heat exchanger and a server cabinet, wherein the server cabinet is arranged in the data computer room; the heat exchanger is a reverse-flow air heat exchanger, and comprises an inner circulating air duct, an outer circulating air duct, and a heat exchange core used for carrying out heat exchange on air in the inner circulating air duct and the outer circulating air duct; and flow guide fans are arranged at an air outlet port of the inner circulating air duct and an air outlet port of the outer circulating air duct respectively. The natural cooling system further comprises a compressor refrigeration system, wherein the compressor refrigeration system comprises an indoor unit and an outdoor unit; the indoor unit is connected with the outdoor unit through a refrigeration pipeline; and an air outlet port of the indoor unit communicates with a space below a raised floor. The natural cooling system disclosed by the invention carries out refrigeration by virtue of the reverse-flow air heat exchanger in low-temperature seasons and carries out refrigeration by virtue of a compressor system in high-temperature seasons. The whole system adequately utilizes a natural cold source of outdoor fresh air for indirect heat exchange, thus saving energy and increasing efficiency.

The invention relates to the technical field of food processing and microbial fermentation, in particular to aspergillus oryzae ZA184 and use thereof in soy sauce brewing. The aspergillus oryzae ZA184can increase the pH of koji, enhance the activity of the koji enzymes (such as neutral protease, alkaline protease, leucine aminopeptidase and glutaminase), and improve the contents of amino nitrogen, total nitrogen and glutamic acid in soy sauce, so that the flavor and quality of the soy sauce is improved, the fermentation cycle can be significantly shortened, and the production efficiency is improved.

The invention relates to energy regulation and control systems, in particular to an intelligent public energy regulation and control system. The intelligent public energy regulation and control systemhas the advantages that factory production energy consumption dynamic procedures can be 'monitored, analyzed and evaluated' by platforms of the intelligent public energy regulation and control systemin an online centralized manner, large quantities of dispersed electricity utilization and energy consumption data can be collected in production procedures, the intelligent public energy regulationand control system has functions of real-time and historical data analysis, energy consumption visualization, comparison statistics, energy consumption warning, energy consumption performance management and the like, and problems of energy consumption procedures and structures can be found out in the production procedures; production running modes and energy utilization structures are optimized, 'information' and 'visualized management' construction is carried out on energy consumption procedures, accordingly, the efficiency of existing energy supply equipment of enterprises can be improved, energy can be saved, the efficiency can be improved, and efficient production can be implemented.

The invention discloses a cooling system of a heat-pipe external-circulation type secondary coolant loop server cabinet. The cooling system comprises more than one heat-pipe cooler, the server cabinet, a water supply branch pipe, a water return branch pipe, a machine room water supply trunk pipe, a machine room water return trunk pipe, an automatic water replenishing and pressure fixing device, a circulating water pump, a reserve pump, heat exchange devices, an outdoor liquid return connecting pipe, an outdoor air outlet connecting pipe, a liquid valve, an air valve, an air cooling condenser and a control system. The air cooling condenser adopts natural-cooling and energy-saving measures. The servers can be directly cooled, and the problems of local overheat and heat points of the server cabinet are solved. Meanwhile, by means of the natural-cooling measures, heat-exchange temperature is high in difference and efficiency, and the cooling system has the advantages of simplicity, reliability and low power consumption and noise and meets the concept of energy conservation and environment friendliness.

The invention discloses a double-effect type server radiating device combining liquid cooling and compressor air cooling systems. The device comprises a main radiating device and an auxiliary radiating device which are assembled into the same frame and separated through a hole plate; the main radiating device exchanges heat with a liquid cooling radiating device which is in direct contact with a server; the auxiliary radiating device is used for absorbing afterheat which is not absorbed by the main radiating device;, wherein the auxiliary radiating device is a compressor air cooling system. According to the device, a server is directly cooled through the main radiating device, so that the problem of local overheat and hot point of the server can be solved; meanwhile, the auxiliary radiating device is used for absorbing the afterheat which is directly cooled by the main radiating device and is not absorbed; the device has the characteristics of being simple, reliable, low in power consumption, and small in noise, and meetings the concept of energy conservation and environmental protection.

The invention relates to aspergillus oryzae ZA210. The aspergillus oryzae has the advantages of thick and solid hypha, high germination rate, low raw material consumption rate, and high comprehensiveenzyme activity, so that the fermented raw oil has the advantages of high total nitrogen index, high glutamic acid and alanine content, low arginine content and the like. The aspergillus oryzae is applied to soy sauce production so as to ferment the raw oil with pure flavor, gentle and harmonized taste, outstanding freshness and sweetness, abundant taste, so that the zero-addition pure brewing soysauce can be industrially produced easily, and energy conservation and efficiency increment are realized.

The invention discloses a control method for a heat pipe primary loop cabinet heat dissipation system. The system comprises more than one heat pipe radiator, a server cabinet, a refrigerant loop fluorine supply branch pipe, a refrigerant loop fluorine return branch pipe, a machine room refrigerant loop fluorine supply main pipe, a machine room refrigerant loop fluorine return main pipe, a reservoir, a maintenance ball valve, an outdoor fluorine supply connecting pipe, an outdoor fluorine return connecting pipe, a heat exchange coil fluorine supply pipe, a heat exchange coil fluorine return pipe, a fluorine supply valve, a fluorine return valve, a closed cooling tower, a control module and the like. The precise short-distance transport of cold air of the cabinet is realized, and the problems that the server cabinet is locally overheated and has heat points are solved; meanwhile, a natural cooling measure is utilized, the heat exchange temperature difference is large and the efficiency is high, and the active anti-condensation and flow protection control are adopted. The heat dissipation system has the characteristics of high reliability, low power consumption and low noise, and meets energy saving and environment-friendly ideas.

The invention discloses a slag pot in steel mills produced by heatproof cast iron. The slag pot comprises a pot body, the pot body is the heatproof cast iron, and is produced by the following components by weight percentage: 3.4-3.6% of C, 1.8-2.2% of Si, 0.60-0.80% of Mn, 2.0-2.2% of Cr, 0.35-0.60% of Mo, less than 0.03% of P, 0.08-0.10% of S, 0.02-0.03% of Re, and the balance of iron. According to the invention, the slag pot in steel mills has the advantages of good thermal conductivity, strong high-temperature resistance, strong oxidation resistance, good heat fatigue resistance, and obviously-increased service life. The invention also discloses a production method of the slag pot in steel mills produced by the heatproof cast iron.

The invention discloses a heat-pipe circulating type primary refrigerant loop server cabinet heat dissipation system, which comprises more than one heat pipe radiator, a server cabinet, a refrigerant loop fluorine supply branch pipe, a refrigerant loop fluorine return branch pipe, a machine room refrigerant loop fluorine supply main pipe, a machine room refrigerant loop fluorine return main pipe, a reservoir, a maintenance ball valve, an outdoor fluorine supply connecting pipe, an outdoor fluorine return connecting pipe, a heat exchange coil fluorine supply pipe, a heat exchange coil fluorine return pipe, a fluorine supply valve, a fluorine return valve, a closed cooling tower, a control module and the like. The precise short-distance transport of cold air of the cabinet is realized, and the problems that the server cabinet is locally overheated and has heat points are solved; meanwhile, a natural cooling measure is utilized, the heat exchange temperature difference is large and the efficiency is high, and the active anti-condensation and flow protection control are adopted. The heat dissipation system has the characteristics of high reliability, low power consumption and low noise, and meets energy saving and environment-friendly ideas.

The invention discloses a gas separation device and method based on a front and rear depropanization double-tower process, and belongs to the field of petroleum chemical industry gas separation. Front and rear depropanization double towers are adopted for replacing a depropanization tower in a conventional process, the front depropanization tower adopts non-clear division for separation of C3 and C4, and a heat source of a tower bottom reboiler is 90-110 DEG C hot water; the rear depropanization tower adopts clear division for separation of C3 and C4, and a heat source of a tower bottom reboiler is 0.35 MPag steam; during operation in winter, the rear depropanization tower can perform pressure reduction operation, and the tower bottom reboiler can adopts 90-110 DEG C hot water as a heat source. Compared with the conventional process, in the premise of ensuring a separation index, the heat energy level can be reduced and energy saving and efficiency improvement of the device can be achieved.

The invention discloses a heat pump drying room dehumidification control system based on time and a target. The system comprises a drying room, a human-computer interaction module used for human-computer interaction, a control module, an execution module, a heat pump unit, a temperature and humidity acquisition module and a dehumidification air valve. The control module is provided with a parameter storage inside. The invention further discloses a dehumidification method. The dehumidification method comprises the steps of firstly, carrying out drying operation according to an existing technology; secondly, carrying out air valve opening and closing cycle operation based on time on the dehumidification air valve; and thirdly, carrying out air valve opening and closing cycle operation basedon the humidity target and time on the dehumidification air valve till drying operation is finished. With the heat pump drying room dehumidification control system based on time and the target, and the dehumidification method, it can be guaranteed that effective dehumidification operation is carried out on the drying room, energy loss caused by the situation that the dehumidification air valve isopened for too long is avoided as well, it is avoided that a drying technology cannot be normally carried out because the temperature in the drying room cannot rise effectively, the purposes of energysaving and benefit increase are achieved, and the purpose of guaranteeing effective operation of the drying technology is achieved.

The invention discloses a high-efficiency energy-saving thermal desorption kiln body mechanism for organic contaminated soil remediation, which comprises a double-cylinder kiln body unit, sieve poresand a material raising plate, and the double-cylinder kiln body unit comprises a thermal desorption kiln body and a sieve-shaped roller for size grading of large and small granular soil. By means of the mode, the efficient and energy-saving thermal desorption kiln body mechanism for organic contaminated soil remediation utilizes a double-cylinder structure to conduct particle size grading on soil,so that in the desorption process of strengthening coarse particles, the desorption efficiency of fine particles is improved, and energy conservation and synergy are achieved.

The invention relates to an offshore movable wind power generation system. The offshore movable wind power generation system is characterized in that a movable power generation energy storage ship navigates to an offshore wind power plant anchorage and carries out anchoring power generation energy storage, and stores electric energy into an energy storage liquid of the movable power generation energy storage ship, the movable power generation energy storage ship which fully stores the energy navigates to a longshore energy storage liquid exchange pump station, and exchanges the energy storage liquid which fully stores the energy, with the energy storage liquid which does not store the energy through the energy storage liquid exchange pump station, and the energy storage liquid which fully stores the energy in the energy storage liquid exchange pump station is subjected to bidirectional exchange with a longshore converter station; and the longshore converter station uses the energy storage liquid which fully stores the energy for generating power and conveys the electric energy to a load centre through a power transmission and distribution system, and meanwhile, the longshore converter station returns the energy storage liquid which is already used for generating power to the energy storage liquid exchange pump station. The offshore movable wind power generation system disclosed by the invention is capable of conveying the electric energy to shore for utilization without the limit of an offshore distance by virtue of the characteristic that the energy storage liquid is capable of being subjected to long-distance transportation without energy losses; and meanwhile, the energy storage liquid is capable of being repeatedly used without damages.

The invention discloses a heat-pump-type heat-recovery tobacco drying device controlled by a computer. A horn opening in the left end of an air outlet hopper of a heat preservation enclosure is provided with baffle-controlled sine-wave humidness expansion devices, the distance between a baffle and the horn opening in the left end of the air outlet hopper is automatically controlled by the humidness, and an outlet in the right end of the air outlet hopper corresponds to a vapor-liquid-coexistence coil pipe area of an external machine; tobaccos are densely hung into the heat preservation enclosure, the temperature and the humidness of drying are automatically adjusted by the computer according to the temperature and the humidness, and the optimum drying effect is obtained. According to the heat-pump-type heat-recovery tobacco drying device controlled by the computer, as a temperature-fluctuation-generated sine-wave heat-expansion and cold-contraction device expands to automatically control the size of the air volume, even efficient drying can be achieved; as the sine-wave humidness expansion devices controls an air door through humidness to automatically control the humidness-discharging air flow, the drying rate can be specially increased; as a humidness discharging opening is aligned to the vapor-liquid-coexistence coil pipe area, efficient recovery of tail heat can be specially achieved, and energy saving and efficiency are achieved; efficient recovery of the tail heat of a system can be specially achieved through external-machine-fin-coil-pipe design, and meanwhile power consumption of a compressor is special low.

The invention discloses a heat pump type heat recovery salted fish drying device. A baffle controlled by sine wave moisture expansion pieces is arranged at a horn opening in the left end of an air discharge bucket of a heat insulation enclosure; the distance between the baffle and the horn opening in the left end of the air discharge bucket is automatically controlled by the moisture; an outlet in the right end of the air discharge bucket corresponds to a steam-liquid coexistence coil pipe region of an external unit; salted fishes are hung on a steel pipe in the heat insulation enclosure. According to the heat pump type heat recovery salted fish drying device, the temperature fluctuation causes expansion and contraction of a sine wave heat expansion and cold contraction device to automatically control the magnitude of the air volume, so that uniform and efficient drying is facilitated; the sine wave moisture expansion pieces automatically control the moisture discharge flow through a moisture control air door, and the operation is particularly favorable for improving the drying rate; a moisture discharge outlet is aligned to the steam-liquid coexistence coil pipe region of the external unit, so that efficient recovery of afterheat is particularly facilitated, and energy conservation and efficiency improvement are realized; the design of a finned coil pipe of the external unit is particularly favorable for realizing the efficient recovery of the afterheat of a system, and a compressor is extremely low in power consumption.

The invention discloses an efficient industrial robot processing energy-saving trajectory planning method under a high-order complex constraint condition, and the method comprises the steps: 1) fitting a tool path curve through NURBS, and carrying out the discretization of the tool path curve, and obtaining D+1 path points; 2) planning a reference feed rate trajectory; 3) obtaining a B spline feeding rate curve with optimal initial energy; and 4) based on the constraint characteristics, carrying out multiple times of cyclic correction optimization on the B-spline feed rate curve with the optimal initial energy to obtain an optimal feed rate track meeting the constraint conditions. According to the method, the energy-saving trajectory planning time can be remarkably and effectively shortened, an energy consumption model containing a robot kinetic equation does not need to be repeatedly calculated, the optimized trajectory of the industrial robot under the complex constraint condition of machining along the complex path can be obtained, and energy conservation and efficiency improvement of the system are achieved.

The invention discloses a controllable oiling device for a roadside wheel track of a railway. The controllable oiling device comprises a wind energy or solar power generation device, a motor, a transmission mechanism, an oil pump, an oil storage tank, an adjusting valve, an oil quantity indicator, a pipeline, an oiling plate and a control system. Compared with controllable oiling devices in prior art, the controllable oiling device has the advantages that wind energy or solar energy is turned into electrical energy, the motor is controlled to run by a single chip machine technology, controlling of an oil outlet capacity and oil outlet time can be achieved, oil waste and environment pollution are prevented, good lubrication between wheel tracks is guaranteed, and purposes of reducing abrasion and noises, saving energy, increasing efficiencies and prolonging service life of a steel rail are achieved.

The invention discloses an infrared selective radiation cooling nano-functional composition and a preparation method thereof. The composition is prepared from silica, a rare earth silicate compound and a molybdate compound according to a mass ratio of 1:(0.5-2):(0.5-2) by the steps of ball milling and uniform mixing, and the silica, the rare earth silicate compound and the molybdate compound havestrong infrared selective radiation performances at 8-10 [mu]m, 9-12 [mu]m and 10-14 [mu]m respectively. The rare earth silicate compound and the molybdate compound are prepared by a sol-gel process and a high-temperature solid phase process according to the stoichiometric ratios SiO2-(0.5-2)Re2O3-(0.1-1.0)Na2O (Re = La, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Y or Sc) and RMoO4 (R = Mg, Ca, Sr or Ba). The infrared selective radiation cooling nano-functional composition can be used for preparing functional devices such as day and night double-effect radiation coolers to provide zero-energy cooling, energy saving and efficiency improvement for buildings, grain and oil stores, solar battery back plates and the like.

The invention discloses an energy-saving electric heating blanket, which comprises a heating gear control device 1 and a local heating blanket. The local heating blanket includes an upper resistance blanket, a lower resistance blanket and a thin sponge layer, and the sponge thin layer is located between the upper resistance blanket and the lower resistance blanket. In between, the upper resistive blanket includes a plurality of upper resistive sheets distributed in a matrix, and the lower resistive blanket includes a plurality of lower resistive sheets distributed in a matrix. The upper resistive sheets are electrically connected to one end of the power supply electrode, and the lower resistive sheet is electrically connected to the other end of the power supply electrode. At one end, there is a sponge mesh between the upper resistance sheet and the lower resistance sheet; the heating area of ​​the present invention is limited to the contact part between the user and the electric blanket, which avoids the waste of uncontacted heat energy and improves the safety of the electric blanket at the same time .

The invention discloses a tail heat recycling rendering kettle which comprises a gas stove air blower, a gas stove and a kettle body, wherein the gas stove air blower is connected with the gas stove; the gas stove is connected with a coal gas combustor through a coal gas tube; a coal gas control valve for controlling in / out of the coal gas is arranged on the coal gas tube; the kettle body is arranged above the coal gas combustor; an outer thermal-insulating cylinder is arranged at the periphery of the kettle body; a gas collecting ring is arranged on the top of the outer thermal-insulating cylinder; high-temperature tail gas collected by the gas collecting ring is sucked and fed into a casing type heat exchanger by a tail gas pipe through a rotor body; the rotor body is driven by a motor to rotate; the casing type heat exchanger is connected with the air inlet of the combustion air blower through an over-hot air tube; the air outlet of the combustion air blower is connected with the coal gas tube through a pipeline. By adopting the tail heat recycling rendering kettle, a retained high-heat barrier gas can be disturbed, and meanwhile the convective heat-transfer coefficient of air flow and a wall surface is greatly increased due to convective flow of the inner and outer layers of the tube; tail heat generated in the oil refining process can be efficiently recycled, the utilization rate of energy is increased, and the purposes of energy conservation and effect improvement can be achieved.

The invention discloses a magnetite series high-pressure roller mill cooperated tailing discarding energy-saving crushing method, and relates to the technical field of magnetite ore dressing. The method comprises the steps that crushed magnetite raw ore is fed into a first-stage high-pressure roller mill, first-stage rolled products are fed into a first-stage screen, the first-stage screen feeds oversize products into a first-stage magnetic pulley, the first-stage magnetic pulley returns concentrate to the first-stage high-pressure roller mill, the first-stage screen feeds undersize products into a fine ore dry separator, the fine ore dry separator feeds concentrate into a second-stage high-pressure roller mill, second-stage rolled products are fed into a second-stage screen, the first-stage screen feeds oversize products into a second-stage magnetic pulley, the second-stage magnetic pulley returns concentrate to the second-stage high-pressure roller mill, the second-stage screen feeds undersize products into a wet magnetic separator, and rough concentrate is obtained. By adopting the method, the rough concentrate grade is obviously improved, the recovery rate is good, and the magnetic iron recovery rate is high; and the energy efficiency ratio is improved, the yield of a main workshop is increased, and energy conservation and efficiency improvement are achieved.

The invention discloses a heat pump type honeysuckle drying device with a heat recovery function. A heat preservation enclosure is provided with an air flow passage which is composed of an air inlet and an air outlet hopper; a horn mouth arranged at the left end of the air outlet hopper is provided with a baffle, and the baffle is controlled by a sine wave humidity expansion device; the distance between the baffle and the horn mouth arranged at the left end of the air outlet hopper is controlled by the humidity automatically, so that the control over the output flow of humid and hot air flow is achieved; an outlet arranged at the right end of the air outlet hopper corresponds to a vapor-liquid coexisting coil pipe district of an outer machine, so that air draft through a fan in the outer machine is most beneficial to recovering the heat of humid and hot tail gas through the working vapor-liquid coexisting coil pipe district of a heat pump, then the heat of the humid and hot tail gas is released in the heat preservation enclosure through an inner machine, and thus the heat recovery of humidity elimination and drying is achieved. According to the heat pump type honeysuckle drying device with the heat recovery function, the sine wave humidity expansion device controls the exhaust humid air flow automatically through a humidity control air door, and therefore improvement of the drying rate is especially facilitated; a humidity outlet is aligned with the vapor-liquid coexisting coil pipe district of the outer machine, and therefore efficient recovery of tail heat is especially facilitated, and energy saving and efficiency improving are achieved; the design of a fin coil pipe of the outer machine is especially beneficial to realizing the tail heat recovery of the system.