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183results about How to "Easy to manage on site" patented technology

Gas separation vessel apparatus

An improved gas separation vessel apparatus is provided. The gas separation vessel apparatus is adapted to separate oxygen and other process gases, and it employs both vertically-, or alternatively, horizontally-positioned vessels. The gas separation vessels disclosed contain removable radial-flow bed cartridge-type adsorbent subassemblies, which may be replaced, substituted, or serviced with minimal system down time.
Owner:AES DEV CO

Concrete static force cutting dismantling construction method

The invention discloses a concrete static force cutting dismantling construction method which mainly comprises the steps of construction equipment selection, cutting unit division, supporting scaffold erection, hoisting auxiliary facility installation, cutting construction, component hoisting and site cleaning. The concrete static force cutting dismantling construction method has the obvious advantages that the effect on the surrounding structures is small in the process of constructing, the constructing speed, the constructing precision and the safety are high, and components which are cut through the static force are convenient to clean. The concrete static force cutting dismantling construction method is suitable for dismantling various reinforced concrete members, and especially for dismantling the part structures with the high demand for dismantling and with the small effect on an original structure. Time and production cost are greatly saved, and the construction period is effectively shortened.
Owner:恒中达建筑有限公司 +1

Real-time material distribution method in mechanical product assembling process

The invention discloses a real-time material distribution method in a mechanical product assembling process, which is characterized in that: according to the production plan on the same day, calculating to obtain all required parts; by considering the storage capability, the existing amount, the material lead time and the product cycle time of each part on each station, calculating a material distribution scheme; distributing the parts in time on small batches according to the obtained distribution scheme; simultaneously, tracking the on-site production situation by an MES system in real time; recording manufacturing product situation and the material consumption situation of each station; and timely feeding back production plan information and station inventory information. The method of the invention can realize on-time material distribution, feeds back and adjusts the distribution scheme in time according to real-time working condition, can improve production efficiency and lowers product cost.
Owner:HEFEI UNIV OF TECH

Intelligent tunnel lining trolley

Provided is an intelligent tunnel lining trolley, characterized by comprising a door-shaped main steel frame, a concrete pouring informationized monitoring system, an end template, a template cleaningand surface lubricating system, an automatic running gear, and a layered window-by-window pouring and cleaning system. The tunnel lining trolley is simple in structure and reasonable in design, and real-time monitoring of each parameter in a concrete pouring process is realized, automation degree of equipment is improved, cleaning and template surface lubrication operation flow are simplified. The intelligent tunnel lining trolley provides convenience for on-site management and construction, and has certain environmental protection property and very high security.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1

Z-shaped bending device for embossed thin aluminum sheet

The invention discloses a Z-shaped bending device for an embossed thin aluminum sheet. The Z-shaped bending device comprises a lathe bed, wherein a bottom plate is fixed on the upper surface of the lathe bed; a pressing plate which is connected with a pressing plate cylinder and can move up and down is arranged above the bottom plate; one side of the bottom plate is hinged with a lower turning plate; the lower part of the lower turning plate is connected with a lower turning plate cylinder which can turn over the lower turning plate upwards; the side of the lower turning plate is provided with a positioning device; an upper turning plate which is arranged vertically is also arranged above the pressing plate; one side edge of the upper turning plate is connected with an upper turning plate cylinder which can turn over the upper turning plate towards the other side; a wall board component is fixed on the lathe bed; and the wall board component comprises a fixed upper turning plate cylinder, the pressing plate and the pressing plate cylinder which are connected with the wall board component and the upper turning plate which is hinged and can turn over. The device has the characteristics of simple structure, convenient and reliable use, high rate of finished products, one-pass operation, high degree of automation, low labor intensity and the like.
Owner:许水林

A management system and management method of a construction engineering labor service personnel

The invention belongs to the field of engineering construction, in particular to a management system and a management method of a construction engineering labor service personnel. The current labor force management system on the market is applied independently by each enterprise or project, the information of the same labor personnel can not be shared, the labor team and labor personnel flow frequently, and the enterprise can not grasp the complete employment experience and performance evaluation of the past years, so there is an urgent need in the field of construction engineering labor personnel management system and management method to overcome the above problems. The invention provides the management system and the management method for the construction engineering labor service personnel, which can help to identify whether the labor service personnel conform to requirements, actively discover problems and implement predetermined measures to prevent employment risks. There are many kinds of attendance plans, and different types of projects choose the appropriate plan according to the needs; It has a standard interface to meet the needs of multiple data docking and help enterprises to improve the application value of real-name data. The invention is simple, easy to use and low in cost.
Owner:GLODON CO LTD

Forming method for square pile hole

The invention relates to the technical field of square pile holes, and discloses a forming method for a square pile hole. The forming method comprises the following construction methods that 1, trepanning is carried out, a square pile casing is put downwards, the lower end of the square pile casing penetrates a fill stratum and extends into a residual soil layer, and the upper end of the square pile casing extends out of the ground; 2, a round drill bit is utilized for carrying out hole guiding many times, a plurality of round holes are formed, the diameter of the round drill bit is consistent with the width of the square pile hole, the multiple round holes are sequentially connected in rows in the length direction of the square pile hole, and the extending length is consistent with the length of the square pile hole; and 3, a square drill bit is utilized for carrying out drilling from top to bottom, and the square pile hole is formed. The forming method for the square pile hole has the following beneficial effects that the forming speed of the square pile hole is high; the quality of the square pile hole is guaranteed; the construction cost is low, the construction speed is high, the single-machine comprehensive efficiency is high, and the mechanical construction cost is relatively low; and the construction site is clean, and field management is simplified.
Owner:SHENZHEN GONGKAN GEOTECHN GRP

Treatment process of oil-containing sewage in low-permeability oil field

The invention discloses a treatment process of oil-containing sewage in a low-permeability oil field in the technical field of petroleum exploitation. The process comprises the following steps: firstly, carrying out aeration pretreatment to remove sulfide in the oil-containing sewage; then, entering a biological contact oxidation system to degrade crude oil in the oil-containing sewage, wherein the biological contact oxidation system comprises at least two stages of biochemical pools which are connected in series, the biochemical pool is provided with a hydrophilic combined filling material, and the pool bottom of the biochemical pool is provided with an air aeration device; putting an oil-removing microorganism agent in an initial stage of starting in the biochemical pool, and then carrying out efficient aeration sedimentation treatment on extracellular polymers and other biochemically degradable organic substances; and finally, treating by an ultrafiltration membrane filtration system and then injecting into a water tank. The process has the characteristics of small system sludge amount, less oil content in sewage at the membrane inlet, little ultrafiltration membrane pollution,stable membrane flux and long chemical cleaning period of ultrafiltration membrane, and the quality of water at the water outlet of the system reaches the grade A water quality standard of the low-permeability oil field.
Owner:CHINA PETROLEUM & CHEM CORP +1

Cloud service system for data acquisition and analysis

InactiveCN104635691AReduce staffing and costsEasy to improve and improveTotal factory controlProgramme total factory controlComputer OperationService system
The invention provides a cloud service system for data acquisition and analysis, which comprises a field operation system, a data acquisition and transmission system and an upper computer operation monitoring and analysis system. According to the cloud service system, through a manner of wireless data transmission, operation data of a plurality of environmental engineering fields can be collected and transmitted to an appointed place, so that a user can master and control the operation status in the field at any time and any place, meanwhile, services of data analysis, early warning report and environmental protection problem solution are provided for the user.
Owner:GO HIGHER ENVIRONMENT GRP CO LTD

Equipment for assembling and disassembling solar water heater storage water tank horizontal type foaming mold

InactiveCN101323085AThe height of climb is smallSmall density gradientMetal working apparatusWater storageWater storage tank
The invention discloses horizontal foaming assembly and disassembly equipment for water storage tanks of solar water heaters, which comprises a rail bracket, a left end and a right end foaming moulds of the coaxial-shaped sheath that are arranged in the middle part of the rail bracket, a positioning movable rotation sealing cover with a liner, a cantilever arm and a cantilever end rotation sealing cover, a sheath circle-checking device arranged above the cantilever arm and the cantilever end rotation sealing cover and used for installing and blocking and setting the sheath, a sheath bracket and a liner bracket which are arranged under the sheath circle-checking device; the left end and the right end foaming mould of the sheath respectively carry out the horizontal movement with the positioning movable rotation sealing cover with the liner, the cantilever arm and the cantilever end rotation sealing cover oppositely to the rail bracket; the sheath circle-checking device carries out the horizontal movements oppositely to the rail bracket; the sheath bracket and the liner bracket carry out the rotation oppositely to the rail bracket. The horizontal foaming assembly and disassembly equipment for the water storage tanks of the solar water heaters can complete the operation of the liner, the sheath assembly, the positioning, the mould sealing and the mould disassembly automatically, can realize the polyurethane foaming automation of the solar water storage tanks, reduce the material consumption, reduce the manufacturing cost, reduce the operation strength of workers, improve the operation efficiency and can improve the product quality.
Owner:HIMIN SOLAR

Beneficiation method of high-sulfur lead zinc ores under high-temperature environment

The invention discloses a beneficiation method of high-sulfur lead zinc ores under high-temperature environment. After raw ore pulp with a pH value above 12 is prepared, the lead roughing and the leadscavenging are performed to obtain lead roughing concentrates and lead scavenging tailing pulp; zinc sulfur inhibitors are added in the lead roughing concentrates for lead refining to obtain lead concentrates; the zinc quick flotation, the zinc roughing and the zinc scavenging are performed on the lead scavenging tailing pulp to obtain zinc quick flotation roughing concentrates and zinc roughingcrude concentrates; the zinc roughing crude concentrates are grinded again; then, the zinc sulfur separation roughing and the zinc sulfur separation scavenging are performed; and after the zinc quickflotation roughing concentrates and the zinc sulfur separation flotation roughing concentrates are merged, high-sulfur inhibitors are added for refining zinc sulfur separation zinc to obtain zinc concentrates. The pH value of the pulp is always kept above 13 in each flotation procedure. The beneficiation method can realize efficient recovery of the high-sulfur lead zinc ores under high-temperatureenvironment, and effectively guarantees the beneficiation process technical index of lead and zinc minerals.
Owner:BEIJING MINING & METALLURGICAL TECH GRP CO LTD

Waste wood slicing method and machine

InactiveCN102441928AGood effectSolve the problem of parallelism errorVeneer manufactureWaste managementEngineering
The invention discloses a waste wood slicing method and a waste wood slicing machine. The method comprises the following steps: feeding waste wood under the push of a conveying device; cutting the waste wood along a vertical surface by using two saw blades which are vertical to a working platform; cutting the waste wood along a horizontal surface by using two saw blades which are parallel to the working platform; and discharging the waste wood through the conveying device to realize reslicing of the waste wood. The slicing efficiency and the slicing quality of the waste wood are high; and the waste wood slicing machine is simple in structure and low in cost.
Owner:董金奎

Prefabricated light thin type low temperature hot water floor radiation heating system

The invention discloses a prefabricated thin and light-typed low-temperature hot-water floor radiation heating system, comprising a filtering device, a water mixing device, a first class water collecting-distributing device system, a second class water collecting-distributing device system, a general water feeding pipe, a general water returning pipe, a contact water feeding pipe, a contact water returning pipe, a heating loop, a heating pipe and a heated board. The first and second class water collecting-distributing device systems are respectively composed of 1 to N first and second class water collecting-distributing devices; each first class water collecting-distributing device adopts 1 to N second class water collecting-distributing devices, and each second class water collecting-distributing device adopts 1 to N heating loops according to needs; the first class water collecting-distributing device is connected with the general water feeding pipe and the general water returning pipe; each first class water collecting-distributing device is provided with 1 to N circuit branches which are respectively connected with the 1 to N second class water collecting-distributing devices through the contact water feeding pipe and contact water returning pipe; each circuit branch of the first class water collecting-distributing device corresponds to one second class water collecting-distributing device which corresponds to one heating unit. The heating system is comfortable, energy-conserving and environment-friendly and is provided with better heating stability and long service life.
Owner:北京市建设工程物资协会 +17

Beneficiation method for copper-cobalt sulfide ore containing two types of cobalt-containing minerals

ActiveCN110038730AFull consideration of tasteFully consider the recovery rateFlotationFoaming agentCopper
The invention discloses a beneficiation method for copper-cobalt sulfide ore containing two types of cobalt-containing minerals. The method includes the following steps: a copper-cobalt activator anda selective copper-cobalt collector are added into raw ore pulp in order for copper-cobalt rough selection and copper-cobalt scavenging to obtain copper-cobalt crude concentrate and copper-cobalt scavenging tailings pulp; adding a pH regulator and a gangue mineral inhibitor into the copper-cobalt crude concentrate and carrying out copper-cobalt fine selection to obtain copper-cobalt concentrate; combining a bottom flow of the first copper-cobalt fine selection and foam of the first copper-cobalt scavenging and carrying out middling re-collection; adding a cobalt activator, a cobalt collector,a xanthate collector and a foaming agent into combined ore pulp of the copper-cobalt scavenging tailings pulp and a bottom flow of the middling re-collection-fine scavenging for cobalt rough selectionand cobalt scavenging to obtain cobalt crude concentrate; and carrying out fine selection on the cobalt crude concentrate to obtain cobalt concentrate. The beneficiation method for copper-cobalt sulfide ore containing two types of cobalt-containing minerals can effectively solve the problems that copper-cobalt mixed concentrate is low, affecting the quality of the concentrate, improves the product quality of the copper-cobalt mixed concentrate, ensures the effective recovery of copper and cobalt, and improves the value of flotation concentrate.
Owner:BEIJING MINING & METALLURGICAL TECH GRP CO LTD

Remote monitoring device of trenchless drilling machine

The invention provides a remote monitoring device of a trenchless drilling machine. The remote monitoring device comprises a sensor, a transmitting module, a receiving module and an upper computer, wherein the transmitting module is provided with a transmitting end master microprocessor minimum system circuit, a slave microprocessor minimum system circuit, a 16 channel data acquiring circuit, a serial port communication circuit, a secure digital (SD) memory card storage circuit, a global system for mobile communication (GSM) module, a global position system (GPS) module, a power supply circuit and the like; the receiving module is provided with a receiving end microprocessor minimum system circuit, a double serial port communication circuit and a GSM module; a GSM network is used for achieving communication between transmitting and receiving; and the upper computer is connected with the double serial port communication circuit through a serial port line, and software is edited in the upper computer and used for receiving, processing and managing data. By means of the device, a trenchless drilling machine manufacturer and a user management department can remotely and real-timely monitor working states of the trenchless drilling machine and master various whole course states of the trenchless drilling machine so that scientific data support is provided for construction site management, drilling machine maintenance, market development and the like.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN) +1

Welding positioner special for upper and lower square butt joint welding seams of excavator movable arms and using method of welding positioner

The invention discloses a welding positioner special for upper and lower square butt joint welding seams of excavator movable arms and a using method of the welding positioner. The welding positioner and the using method solve the bottleneck problem in the operation of welding the movable arms. Due to welding of the square butt joint welding seams of the movable arms, the welding can be well combined with a welding device, mechanization of the welding is achieved, and production efficiency and welding quality are improved. The problems that at present, production efficiency is low and product quality cannot be ensured are solved. Meanwhile, the labor intensity of workers is reduced, and the production cost is greatly reduced. Above all, safe and civilized production is achieved, and field management is also facilitated. The welding positioner special for the upper and lower square butt joint welding seams of the excavator movable arms can complete the welding of movable arms of different types and end the situation that no device is used for welding the movable arms.
Owner:SUNWARD INTELLIGENT EQUIP CO LTD

Reinforcement end reinforced large-diameter straight thread connector and connecting method thereof

InactiveCN101624854AMeet design and construction requirementsHigh tensile strengthBuilding reinforcementsReinforced concreteEconomic benefits
The invention relates to the technical field of building construction, in particular to a reinforcement end reinforced large-diameter straight thread connector for a reinforced concrete frame structure of a building and a connecting method thereof. The reinforcement end reinforced large-diameter straight thread connector comprises a screw and a screw sleeve; two ends of the screw are provided with an external straight thread respectively; an internal straight thread matched with the external straight threads on the screw is formed in the screw sleeve; the external straight threads of the screw are screwed with the internal straight thread of the screw sleeve; and the diameters of the internal straight thread and the external straight threads which are matched are 30 to 40 millimeters. The connecting method for the reinforcement end reinforced large-diameter straight thread connector alternately screws the screw and the screw sleeve with the same diameter and the same screwing direction in turn to make the screwing lengths of the screw and the screw sleeve meet the requirements of design and construction. The connector and the connecting method improve the tensile strength of reinforcement, reduce the potential safety hazard, greatly lighten the labor intensity of building constructors, improve the building construction efficiency, and have the advantages of convenient construction, stable quality, obvious economic benefit, convenience for field management, safe production and the like.
Owner:上海建研钢筋连接技术有限公司 +1

Automatic battery cleaning machine

The invention discloses an automatic battery cleaning machine, which comprises a boric acid water tank, an alcohol trough and a drying oven, wherein the boric acid water tank is provided with a first feeding device which is powered by a battery; a second feeding device is arranged between the boric acid water tank and the alcohol trough; a third feeding device is arranged between the alcohol trough and the drying oven; a first gear plate is arranged in the boric acid water tank; the first and second feeding devices are arranged on the two sides of the first gear plate respectively; a cleaning brush is arranged below the first gear plate; a second gear plate is arranged in the alcohol trough; and the second and third feeding devices are arranged on the two sides of the second gear plate respectively. The automatic battery cleaning machine has the advantages of reducing the labor intensity of workers, improving the production efficiency, bringing convenience to field management and saving water and alcohol consumption.
Owner:TIANNENG SAFT ENERGY JOINT CO

Bridge production system

The invention discloses a bridge production system. The bridge production system comprises a bridge body steel bar binding area, a bridge body pouring area and a gantry crane arranged on the bridge body steel bar binding area and the bridge body pouring area in a striding manner, and the gantry crane is provided with a lifting and moving device. Compared with the prior art, various bridge body prefabricated web steel bar binding table bases are provided in the scheme, bridge body steel bar framework binding is normalized and standardized, consumption of labor force is greatly reduced, the construction period is shortened, and integrity is high. The various bridge body prefabricated web steel bar binding table bases are formed by splicing steel structural pieces and can be cyclically used, the usage number of the binding table bases is reduced, the construction using land is reduced, and convenience is provided for field management. Rubber drawing and pulling bar penetrating construction can be rapidly finished through a rubber bar drawing and pulling device, a prestress hole channel is embedded, the labor intensity is low, and the work efficiency is high. In a side beam pouring tool, a first supporting plate of an effective supporting part can be independent, the size is small, the mass is low, operation is more flexible and is gradually changed during demolding, and therefore damage to concrete can be reduced.
Owner:CHINA RAILWAY 16TH BUREAU GRP RAIL TRANSPORT ENG CO LTD

Intelligent optimization and automatic scheduling system for production logistics

ActiveCN112488606AFair use statusReduce waiting wasteLogisticsStorage devicesLogistics managementProduction logistics
The invention relates to the technical field of logistics scheduling systems, in particular to an intelligent optimization and automatic scheduling system for production logistics which comprises a logistics management system, configuration software and execution equipment. The logistics management system comprises a transport demand receiving module, a transport plan making module, a transport scheduling module, a transport execution tracking module and a transport plan self-optimization module. The transport scheduling module is used for issuing a scheduling instruction to execution equipment through configuration software according to the transport plan calculated by the transport plan compiling module; the transport plan self-optimization module updates the conveying plan in time through feedback information of the execution process, material demand change information, production field change and material return demand information, and issues and executes the transport plan again to form closed-loop management of the distribution process. A logistics management system with self-sensing, self-optimizing and self-decision functions is formed by applying the Internet of Things technology, the accuracy and rationality of a transport plan are improved, and the efficiency of a logistics execution process is improved.
Owner:北京三维天地科技股份有限公司

Equipment overall efficiency detecting method

The invention relates to an equipment overall efficiency detecting method. The method comprises the following steps of inputting data: 302) recording starting time; 303) turning on a proximity switch (PX1), acquiring vehicle speed, and judging whether the vehicle speed is zero or not, if so, performing the next step, otherwise, returning to the 303) step; 304) recording stop beginning time; 305) acquiring the vehicle speed through the proximity switch, and judging whether the vehicle speed is zero or not, if so, performing the next step, otherwise, returning to the 304) step; 306) recording stop ending time; 307) judging whether the continuous time is more than a stop parameter or not, if so, performing the next step, otherwise, returning to the 303) step; 308) recording the stop beginning time and the stop ending time in an equipment efficiency database; and 309) judging whether the continuous time is more than a set stop parameter or not, if so, recording stop time, otherwise, returning to the 303) step. The method also comprises the steps of outputting data, i.e. 401) acquiring Q and N, 402) researching the equipment efficiency database, 403) acquiring T1 and T0, and 404) calculating output T, P and I.
Owner:MINGWEI MACHINERY DONGWAN

Security door panel intelligent batching tower warehouse

The invention discloses a security door panel intelligent batching tower warehouse. The security door panel intelligent batching tower warehouse comprises a material storage tower frame, a lifting support, material storage trolleys, a transferring mechanism and a lifting mechanism; a plurality of layers of batching frames for placing the material storage trolleys and a material grabbing mechanismlocated below are arranged on the material storage tower frame; the material grabbing mechanism comprises a sliding rail seat fixed on the material storage tower frame, a sliding rail fixed below thesliding rail seat, fourth and fifth roller shafts arranged above the sliding rail seat, synchronizing wheels fixed on the fourth and fifth roller shafts, a synchronizing belt connected between the synchronizing wheels, a moving motor for driving the fourth roller shaft to rotate, and a suction cup frame; a synchronizing belt clamping block fixed with the synchronizing belt, and a sliding block arefixed on the suction cup frame; a plurality of air cylinders are fixed on the suction cup frame; and the air cylinders are connected with suction cups. After adopting the structure, the structural design is reasonable, the occupied area is small, the automation degree is high, the use effect is good, and labor saving, time saving and force saving and the like are achieved.
Owner:BUYANG GRP

Intelligent ordering system and its method

InactiveCN101221639AAvoid troubleConvenient to watch a la carteTransmissionCommerceEngineeringData transmission
The invention discloses an intelligent dish ordering system which mainly consists of a host frame, an extension machine, an electronic menu and a wrist watch receiver, wherein the host machine is arranged on a reception desk or in a manager room, the extension machine is arranged in a kitchen, the host machine and the extension machine transmit data through a cable, wireless signal transmitting and receiving devices are arranged in the host machine, the electronic menu and the wrist watch and data is transmitted between the electronic menu and the host machine as well as between the wrist watch and the host machine through wireless signals. The invention can control the whole process of dish ordering and enables a chef or the chief of chefs to enquiry the progress of a dish according to table number, dish category and fabrication chef in the extension machine at any time. The restaurant manager can enquiry in the host machine the dinning situation in the restaurant, the storage and the historic log at any time for easy site management and overall planning. Compared with the prior art, the invention can control the whole process of dish ordering with convenient use and more practicability.
Owner:林小芳

Non-asphaltic base construction method for pre-paving type high-molecular self-adhesive film waterproofing membrane for basement floor

The invention discloses a non-asphaltic base construction method for a pre-paving type high-molecular self-adhesive film waterproofing membrane for a basement floor. The method comprises the following steps of (1) repairing of a protection wall, (2) treatment of a foundation layer, (3) paving of the membrane, (4) bundling of reinforced bars and (5) concrete pouring. Compared with a traditional method, the construction procedures of the pre-paving type high-molecular waterproofing membrane are simple, requirements for treatment of the foundation layer are not high, primer treatment, a leveling layer and a protection layer are not required, the project efficiency is greatly improved, and the construction period is shortened; construction operation is convenient and flexible, the construction process is easy to master, pertinence is high, and the working efficiency is high; and the requirements for construction devices are low, proportioning can be conducted in advance, unnecessary waste during construction is reduced, and the economic benefits are remarkable. The pre-paving type high-molecular waterproofing membrane is low in weight is low and reliable in butt joint, has high tensile strength and good waterproof effect compared with a traditional waterproof membrane, can obviously improve the effect of a waterproof project, and reduces the expenses of later maintenance; and as no primer operation or fire operation exists during construction, potential safety hazards are eliminated, resources are saved, and the environment friendliness is improved.
Owner:SHANGHAI BAOYE GRP CORP

Method for recycling rare earth minerals from bottom sediments

The invention discloses a method for recycling rare earth minerals from bottom sediments, and relates to the technical field of rare earth ore dressing. The method comprises a pretreatment operation,a roughing operation and a concentration operation, wherein the pretreatment operation comprises the step that the bottom sediments are stirred and mixed with a first adjusting agent at a temperatureof not less than 40 DEG C; the roughing operation comprises the step that the bottom sediments obtained by pretreatment are mixed with a second adjusting agent and a collecting agent for roughing to obtain rough concentrate and rough tailings; and the concentration operation comprises the step that the rough concentrate is used as a raw material of the concentration operation for at least two times of concentration to obtain rare earth ore concentrate, wherein the second adjusting agent is added in each concentration. The method not only can effectively enrich the rare earth minerals in the bottom sediments, and recycle the rare earth minerals, but also has the advantages of being simple in operation, stable in flow, convenient in on-site management and high in adaptability.
Owner:BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1

Rapid repairing structure for shallow landslide of above-second-level soil slope and construction method thereof

The invention discloses a rapid repairing structure for a shallow landslide of an above-second-level soil slope and a construction method thereof. According to the repairing structure, a step is excavated on a landslide part of a landslide body, multiple layers of backfill bagged soil are constructed on the step in a filling manner, and geogrids are laid at the bottom of each layer of backfill bagged soil; reserved parts of the geogrids are reversely wrapped along the backfill bagged soil on the upper portions of the geogrids and tensioned to the required tensile strength, the geogrids are fixed to the top face of the backfill bagged soil through U-shaped nails to form reverse wrapping, and the reverse wrapping geogrids and the geogrids adjacent to the upper layer are fixedly connected through U-shaped nails and are both fixed to the top face of the corresponding backfill bagged soil; and a plurality of steel bars are implanted into the bottom of a reinforced body formed by combining the backfill bagged soil and the geogrids. The repairing structure plays a supporting role, meanwhile, energy dissipation is achieved on expansion deformation generated by soil in the slope through self deformation, the repairing effect is good, construction is easy and convenient, the technical requirements for personnel are low, the construction period is short, the number of machines is small, risks are low, cost is low, and environment friendliness is achieved.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Jig frame intelligent layout method for ship sectional construction and computer storage medium

The invention discloses a jig frame intelligent layout method for ship sectional construction and computer storage medium. The jig frame intelligent layout method comprises the following steps that (1) body mass of a ship body curved surface sectional member based on a bounding box algorithm is acquired; (2) surface quality of the ship body sectional member on a projection plane is acquired basedon equal area; (3) point position layout of a jig frame is determined based on constraint conditions such as surface mass, the center of mass of a ship body sectional projection plane and the supporting weight of a single jig frame; (4) a mathematical fitting model of a ship sectional outer plate on the point position and height of the jig frame is acquired; (5) a contact point position between the jig frame and the sectional outer plate is determined; (6) a supporting point position of an uppermost pillar of the jig frame is determined; and (7) the rising height of a lead screw is determined.According to the jig frame intelligent layout method for the ship sectional construction, the accuracy and a utilization rate of the jig frame layout are effectively improved, an intelligent level ofthe jig frame layout is improved, the accuracy, the quality and the production efficiency of the ship body sectional member are improved, and the labor intensity of workers is reduced; and the jig frame intelligent layout method is first proposed in the field of ship construction at present, and has wide development space.
Owner:JIANGSU UNIV OF SCI & TECH
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