33results about How to "Achieve physical separation" patented technology

The invention discloses a method for refining bismuth from bismuth oxide slags. The bismuth oxide slags and reduction agents are subjected to reduction smelting, liquation decoppering, primary lead removal through chlorine, vacuum distillation for silver removal, secondary lead removal through chlorine, high-temperature refining for dechloridation, and caustic soda flakes adding for tellurium removal, and finally refined bismuth is obtained. Alloy containing silver, copper, bismuth, lead and the like directly enters the decoppering procedure, wet pretreatment is omitted, the decoppering procedure is simplified, copper matte and silver-zinc crusts are prevented from being generated, the usage amount of nitric acid in a wet section is reduced, emission of nitric oxide in the nitric acid dissolving process is reduced, and pollution to the environment is reduced; after a zinc adding and silver removal technique is changed into the vacuum distillation for physical silver removal technique, the silver-zinc crusts which are difficult to treat are eradicated, physical separation of silver and bismuth is achieved to the maximum extent, and the recovery rate of silver is increased; and the usage amount of coal gas and auxiliary materials is reduced, the labor intensity of workers is relieved, the production period of the refined bismuth is shortened, the production cost of the refined bismuth is reduced, and the direct recovery rate and the recovery rate of the refined bismuth are increased.

The invention discloses an Internet online voting system. The system includes: a terminal set which includes a voting terminal, an auditing terminal and a management terminal, the voting terminal being used for network voting voters who input a correct user password to elect and vote, and the user password being used for verifying identities of the network voting voters; an access router; a voting subsystem which includes a first server and a second server; a firewall subsystem which includes a firewall router and a firewall server; a database server used for storing election data; an identity authentication server used for storing registration information; and a third server and a fourth server, an isolation gatekeeper being arranged between the fourth server and the third server and used for ferrying data information that needs to be transmitted between the third server and the fourth server. The Internet online voting system solves the technical problem in related technologies that user experience is relatively poor when a user uses an Internet online voting system.

The invention discloses a rhizosphere soil sampling device, comprising a square box, where two mesh dividing pieces seamlessly connected with the box are symmetrically arranged in the cavity of the box, so as to divide the cavity into left, middle and right chambers, the two mesh dividing pieces are parallel with the centre line of the box, at least a mesh insert piece is arranged in each of the left and right chambers, the mesh insert piece seamlessly adheres to the adjacent mesh dividing piece, and the mesh insert pieces in the left and right chambers are symmetrical to the center line of the box, the mesh diameters of the mesh dividing pieces and mesh insert pieces are all 25 microns. And the sampling device can implement sampling of rhizosphere soils at different mm levels.

The invention provides a carbon-iron-titanium-silicon-aluminum oxide compound and a preparation method and application thereof. The preparation method of the carbon-iron-titanium-silicon-aluminum oxide compound comprises the following steps that water is added into red mud, and a first slurry is obtained through grinding; acid is added into the first slurry to adjust the pH value to be 2 to 4, surface dispersant is added, alkaline matter is added to adjust the pH value to be 5 to 10 during the grinding process, and a second slurry is obtained; solid-liquid separation is conducted on the second slurry, calcination is conducted on a solid, and a coated iron-titanium-silicon-aluminum oxide is obtained; reduction is conducted on the coated iron-titanium-silicon-aluminum oxide in a reducing gas atmosphere, carbon fiber generation is conducted in a hydrocarbon atmosphere, cooling is conducted, and the carbon-iron-titanium-silicon-aluminum oxide compound is obtained. According to the carbon-iron-titanium-silicon-aluminum oxide compound and the preparation method and application thereof, high-value utilization of the red mud can be achieved, and extremely high industrial application potential is achieved.

The invention relates to the field of potassium salt extraction from solid ores, particularly a method for producing KCl from ground surface carnallite, which comprises the following steps: 1) mixing ground surface carnallite with a high-Mg<2+> brine solution, and stirring to obtain a slurry; 2) sending the prepared slurry into a spiral particle grader to perform primary desliming; sending the coarse material subjected to particle gradation into a hydroclone to perform two-stage swirl desliming, and carrying out vacuum separation on the cyclone underflow, wherein the solid sample is deslimed carnallite; 3) carrying out cold decomposition on the deslimed carnallite for 20-30 minutes; and 4) adding a decomposition mother solution obtained by cold decomposition into the deslimed subjected to cold decomposition, adding a floatation agent, and carrying out two-refinement one-scavenging floatation to obtain KCl double-refined concentrate. The technique does not need any salt field solution mining or evaporation process, thereby saving the salt field construction cost and fresh water resources and greatly shortening the whole production process and production cycle for producing KCl from high-clay carnallite. Meanwhile, the method directly implements ore/clay physical separation, and generates the KCl product with the grade of at least 95%.

The invention relates to the technical field of an electric short-circuit protection device, in particular to a multifunctional fireproof short-circuit protector with a redundant device. The multifunctional fireproof short-circuit protector comprises a switch power supply, a current sampling device, a digital signal processor, a large-current power module, an isolation driving module, a redundant device, a charge absorption circuit and a load; the redundant device is a controlled mechanical switch, and an end L of an alternating-current power 220V is respectively connected with a resistor R1, the input end of the switch power supply, the input end of a differential amplifier and one end of the current sampling device. The multifunctional fireproof short-circuit protector is used in different alternating-current strong current fields such as household power, industrial power and the like, when the load is short-circuited, the abnormal power supply circuit is disconnected instantaneously at a microsecond speed, and no dangerous spark is produced on the short-circuit position; when the abnormal situation such as electric leakage happens in an electrical loop, the electric-leakage circuit is also disconnected at a high speed by the device; through the redundant device, even when the extreme situation that the large-power current module or the digital signal processor is abnormal occurs, the reliability of the device also can be guaranteed.

The invention discloses an intelligent leakage current monitoring sensing device and a leakage current monitoring system. The intelligent leakage current monitoring sensing device comprises a leakage current collecting assembly, a CPU processor, a self power supply and a wireless communication assembly. The leakage current collecting assembly and the wireless communication assembly used for wireless communication are in signal connection with the CPU processor, the self power supply is electrically connected with the leakage current collecting assembly, and the CPU processor is electrically connected with the wireless communication assembly. By means of the intelligent leakage current monitoring sensing device, collected data can be sent to a box change monitoring assembly in a wireless mode to be used for on-line monitoring of an overvoltage protector or a lightning arrester. The leakage current monitoring system comprises a host and the intelligent leakage current monitoring sensing device. The intelligent leakage current monitoring sensing device comprises the CPU processor and the wireless communication assembly which is in signal connection with the CPU processor. The wireless communication assembly is in wireless connection with the host. The intelligent leakage current monitoring sensing device and the box change monitoring assembly are in wireless communication, so that physical separation between primary equipment and secondary equipment is achieved, and thus system operation security is improved.

The invention relates to an image transfer arrangement (1) for the wireless transfer of image information items between a transmitter (4) and a receiver (8), wherein at least two communication channels (11) which are physically independent of one another are formed between the transmitter (4) and the receiver (8) and enable impairment and interference-free communication.

The invention relates to the technical field of ships, in particular to a double-steering-gear single-cable-channel ship, which comprises a steering gear cabin, wherein a cable channel is connected to one end of the steering gear cabin, and a stern cabin is connected to the other end of the cable channel; a first cable and a second cable are arranged in the cable channel, and the left and right ends of each cable are arranged in the steering gear cabin and the stern cabin respectively; the periphery of the second cable is sleeved with a fireproof sleeve. According to the double-steering-gear single-cable-channel ship, the second cable with the fireproof sleeve is arranged, and can be physically separated from the first cable, so that power can be normally supplied by the other cable when one cable is on fire, at least one steering gear is further enabled to be available in an emergency state, and an accident caused by unavailability of steering gears is avoided.

The invention discloses an intelligent sports testing and information acquisition system based on NFC identification for a senior high school entrance exam, which belongs to the technical field of teaching information processing systems, and solves the problems of safety and operation convenience of information processing. The main points of the technical scheme are that the system comprises an NFC tag, NFC terminal equipment and a WEB server, and the system is characterized in that the WEB server is used for obtaining an NFC database and examination subject information on an academic office website, the NFC database stores a unique identification code of each NFC label, the NFC labels are used by students and record student identity information and student examination score data, and the NFC terminal equipment is used by teachers and is provided with a front-end module and a rear-end module. The effects that identity secondary confirmation is carried out through fingerprint identification, and the working reliability and safety are improved are achieved.

The invention discloses a method for separating sperms in mixed stains by using a porous material, and the method comprises the following steps: (1) pre-treatment of mixed stains: separating sperm cells and other cellular components from physical evidence by using a cell eluent to obtain a suspension; (2) combination of the sperms and the porous material: taking a porous material adsorption pieceand mixed liquid, pouring the mixed liquid on a porous material adsorption sheet, allowing the mixed liquid to enter the inside of the material from the upper surface of the porous material adsorptionsheet and then drip from the lower surface, discarding the dripped liquid, and retaining the porous material adsorption sheet; (3) removal of other cellular components on the surface of the porous material: washing the porous material adsorption sheet obtained in the step (2) with TES washing liquid to remove other cells and DNA thereof adhered on the porous material surface except sperms; and (4) digesting the porous material adsorption sheet obtained in the step (3) with a sperm digestive solution, so that the sperms adhered in the micropores of the porous material is eluted into the spermdigestive solution to obtain a sperm DNA solution.

The invention relates to the technical field of charging facility heat dissipation equipment, and particularly provides high-power liquid cooling super fast charging equipment, which comprises a shell, a control box, an alternating current charging device and a cooling device, the shell is in a vertical cabinet type, a vertical partition plate is arranged in the shell, and the interior of the shell is divided into a first containing cavity and a second containing cavity by the vertical partition plate; the control box is fixed on the shell, and the control box is used for controlling the alternating current charging device to carry out rapid charging and controlling the cooling device to carry out cooling on the alternating current charging device; the alternating current charging device is installed in the first containing cavity and used for charging an electric automobile. And the cooling device is installed in the second accommodating cavity, and the cooling device adopts a liquid cooling mode to carry out heat dissipation on the alternating current charging device. According to the invention, the heat dissipation capability is improved by adopting a liquid cooling mode so as to adapt to the high-heating-value heat dissipation requirement of the high-power fast charging equipment, electrical isolation prevention is realized through the vertical partition plate, and the safety of the equipment is improved.