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57 results about "Andiron" patented technology

An andiron or firedog, fire-dog or fire dog is a bracket support, normally found in pairs, on which logs are laid for burning in an open fireplace, so that air may circulate under the firewood, allowing better burning and less smoke. They generally consist of a tall vertical element at the front, with at least two legs. This stops the logs from rolling out into the room, and may be highly decorative. The other element is one or more low horizontal pieces stretching back and serving to hold the logs off the bottom of the fireplace. An andiron is sometimes called a dog or dog-iron.

Iron and aluminum melting separation method for complicated and hard-dressing aluminum and iron intergrowth ore

The invention provides an iron and aluminum melting separation method for hard-dressing aluminum and iron intergrowth ore which is embedded in a complex way. The method comprises the following steps of: adding aluminum and iron intergrowth ore into a prereduction furnace (1), aerating carbon monoxide and/or hydrogen into the prereduction furnace (1) to partially reduce the aluminum and iron intergrowth ore, putting the partially reduced aluminum and iron intergrowth ore into a final reduction smelting and separation furnace (2), further performing final reduction on the aluminum and iron intergrowth ore through carbothermic high temperature, and tapping and deslagging respectively by utilizing the formation of an upper liquid phase and a lower liquid phase due to different specific gravities of molten iron and alumina-containing molten slag at high temperature so as to finish melting separation. By the method, the complete separation of iron and aluminum in the hard-dressing and complicated aluminum and iron intergrowth ore can be realized, and the high recovery rate of iron and aluminum is ensured and the comprehensive utilization of the complicated and hard-dressing aluminum andiron intergrowth ore is realized at the same time. Moreover, by the process, products such as iron, alumina, high-quality coal gas, cement, carbon dioxide and the like can be obtained, and exhaust gas and waste residue are not discharged; and the method has the characteristics of low energy consumption and high recovery rate.
Owner:NORTHEASTERN UNIV

Surface self-cleaning carbon nitride Fenton-photocatalytic nanofiltration membrane and preparation method thereof

The invention discloses a surface self-cleaning carbon nitride Fenton-photocatalytic nanofiltration membrane and a preparation method thereof and belongs to the fields of water treatment membrane materials and preparation processes of the water treatment membrane materials. The method comprises selecting carbon nitride photocatalysts which integrate plasticity of polymer molecules and chemical stability of carbon materials and performing surface modification, chemical modification, Fenton-like agent compounding and the like to prepare a multifunctional water treatment membrane. On the one hand, inter-element triangular nanopores formed by carbon nitride can provide stable natural channels for rapid passage of water molecules; on the other hand, through irradiated catalytic degradation andiron-containing agent Fenton-like oxidation, in-situ degradation of nanofiltration retained pollutants can be achieved. The surface self-cleaning carbon nitride Fenton-photocatalytic nanofiltration membrane provides a new way for solving the problem of membrane contamination difficult for traditional nanofiltration membrane materials and has the advantages of being simple in preparation method, low in cost, resistant to pollution, low in water mass transfer resistance and the like, thereby being applicable to application to the field of water purification.
Owner:TSINGHUA UNIV

Selective separation recovery technology of heavy metal in electroplating sludge containing chromium

The invention relates to a selective separation recovery technology of heavy metal in electroplating sludge containing chromium. The selective separation recovery technology of the heavy metal in theelectroplating sludge containing the chromium specifically comprises the steps that (1) the sludge containing the chromium and carbonate are subjected to mix roasting under a certain temperature, andiron sources are supplemented appropriately; (2) hydrothermal reaction is carried out on a solid obtained in the step (1) and an alkaline mineralizing agent; (3) after solid-liquid separation is carried out on turbid liquid obtained in the step (2) by using magnetic force, a diluted acid solution (pH is 3.5-5.0) is added into the solid for calcium removal, and concentration and crystallization arecarried out for recovering the chromium after liquid dezincification; and (4) after the magnetic separation of the turbid liquid in the step (3) is carried out, mixed reaction is carried out on the solid and a concentrated acid solution (pH is 2-3.5); and after the magnetic separation of the obtained turbid liquid is carried out, the solid is a nickel ferrite product, and copper is recovered in aliquid mode. According to the selective separation recovery technology of the heavy metal in the electroplating sludge containing the chromium, doping regulation and control of metal elements in thesludge in spinel class materials (M (II) N (III) 2O4 (M=Ni, Cu, Zn, Ca; N=Cr, Fe, Al)) is realized through comprehensive regulation and control of the roasting temperature and a hydrothermal mineralizing agent, so that the selective separation recovery technology of the heavy metal is realized. Meanwhile, after the sludge is subjected to a roasting/hydrothermal combined technology, the solid has higher magnetic force, and the difficulty of solid-liquid separation in the technology is reduced.
Owner:FUZHOU UNIV +1

Laser welding experiment device capable of realizing magnetic field assisted molding

The invention discloses a laser welding experiment device capable of realizing magnetic field assisted molding. The device comprises a frame, a sample placing table, test panels, permanent magnets andiron cores, wherein the sample placing table is arranged on the frame; the test panels are arranged on the sample placing table; the permanent magnets are arranged on the test panels; and the iron cores are arranged below the test panels and connected with an external power supply. Compared with the prior art, the device has the following beneficial effects that the fusion depth of aluminum alloylaser welding is larger, the sum of the gravity of a molten pool and the reaction force of a key hole of the molten pool is larger than the surface tension of the bottom, and downward leakage is easier under the gasket-free condition to form an overlap. The device aims to prevent molten drops of aluminum alloy laser welding from leaking downwards under the gasket-free condition, reduce the flowing speed on the upper surface of the molten pool and improve the welding seam molding. Meanwhile, the experiment function is also taken into consideration, so that the test panels move relative to therectangular frame, a laser and magnetic field action area is static relative to the rectangular frame, and continuous observation of the welding process is realized.
Owner:SHANGHAI JIAO TONG UNIV

Outdoor family barbecue grill convenient to use

The invention discloses an outdoor family barbeque grill convenient to use. The barbeque grill comprises a base, a grill body is welded to the upper end of the base, two clapboards are symmetrically and fixedly connected to the side walls of the two sides of the inner bottom of the grill body, and two supporting blocks are fixedly connected to each clapboard; two tracks are jointly supported at the portions, located at the upper edge of the same clapboard, on the two corresponding supporting blocks, andirons are jointly and slidably connected to the upper ends of the two tracks, and an iron wire net is fixedly installed at the bottom of each andiron; a door body is formed in the portion, corresponding to each andiron, of the side wall of the grill body and rotatably connected with the sidewall of the grill body, and a transmission mechanism is connected between the door body and the andirons. By means of the outdoor family barbeque grill, seasonings and tools required for barbeque areconveniently placed and classified, and are more hygienic and more convenient to take for use; the barbeque grill can avoid the situation that scaling is caused when charcoal is directly added from the portion above the andirons, is safer, and can control combustion of charcoal fire, the heat of the charcoal fire is more uniform, and the user experience is better; the outdoor family barbeque grill is convenient to clean and use next time.
Owner:广州和依德厨具有限公司

Plate burr removing device

The invention relates to the field of composite plate production equipment and particularly discloses a plate burr removing device. The plate burr removing device comprises a rack and a PLC system. Aroller bed is arranged on the rack. A burr removing device and a brush cleaning device are arranged above the roller bed. A first photoelectric sensor, a second photoelectric sensor and a limiting cylinder are arranged below the rack. The limiting cylinder is connected with a limiting plate. The burr removing device comprises pressing cylinders and a burr cutter cylinder. A pressing plate is arranged at the output ends of the pressing cylinders. The output end of the burr cutter cylinder is connected with a burr removing blade. The brush cleaning device comprises a brush screw roller. The first photoelectric sensor, the second photoelectric sensor, the limiting cylinder, the pressing cylinders and the burr cutter cylinder are in circuit connection with the PLC cylinder correspondingly. Through a series of cooperative operation of the photoelectric sensors, the burr removing device and the brush cleaning device, the plate burr removing device automatically and rapidly removes burrs andiron scraps through mechanical operation completely replacing manual operation, reduces the labor intensity and improves the operating efficiency.
Owner:山东万事达建筑钢品股份有限公司

Method for preparing reduced iron powder through blast furnace gas dust smelting furnace slag

The invention relates to a method for preparing reduced iron powder through blast furnace gas dust smelting furnace slag. The method comprises the steps that the blast furnace gas dust smelting furnace slag is sequentially crushed and ball-milled; water is added to a material obtained after ball milling for size mixing, then slurry is put in a spiral sorting machine for sorting, and iron ore concentrate and tailings are obtained; the tailings flow out from the tangent line of the bottom spiral outer edge of the spiral sorting machine and directly enter a table sorting machine for sorting, andiron ore concentrate and tailings are obtained; and iron ore concentrates obtained at different sorting stages are mixed and then subjected to reduction roasting, and the reduced iron powder is obtained. The blast furnace gas dust smelting furnace slag is crushed and ball-milled at first, small particles are obtained, iron and carbon are completely separated, then sorting and recycling are conducted through the synergistic effect of the spiral sorting machine and a table, and finally the reduced iron powder product with the grade being 98% or above is obtained, iron elements in the blast furnace gas dust smelting furnace slag is efficiently recovered, and the method has good economic benefits and application prospects.
Owner:唐山鑫联环保科技有限公司

Pyrite selectivity inhibition technique for secondary copper sulfide mineral biological lixiviation process

The invention relates to a pyrite selective inhabitation technique for biological leaching process of secondary copper sulphide ores, wherein, a biological leaching system with low PH value and low electric potential is reached by utilization of leaching bacteria containing Thiobacillus ferrooxidans Retech III (T.F.R.III leaching bacteria for short) (has been collected in China Center for Type Culture Collection (in Wuhan University) and has a collection registration number of CCTCC No:M200033) and adoption of two spraying methods of phased intermission and continuity and reasonable matching of bacterial activity, PH value and other conditions, and high efficiency selective leaching of the copper sulphide ores is realized. Moreover, pyrites are inhibited effectively and yield of acids andirons is reduced. After extraction of qualified lixivium after leaching, aqueous phase goes back for heap leaching, and organic phase enters into stripping procedure for treatment. The invention has the advantages of short technological flow, simple equipment, low cost, no pollution, high recovery rate, capability of processing low-grade secondary copper sulphide ore resources which are difficultto process by the prior mineral smelting technique, and improvement of comprehensive utilization rate of copper resources.
Owner:有研资源环境技术研究院(北京)有限公司

Preparation and detection method of ultralow carbon aluminum carbon fireproof material

The invention relates to a preparation and detection method of an ultralow-carbon aluminum carbon fireproof material, and belongs to the technical field of fireproof material preparation for steel andiron metallurgy. SiO2-based natural ore or waste slag and a carbon source are sufficiently and uniformly mixed and are put into a high-temperature furnace for preparing a SiC-based synthesis materialin inert or reduction atmosphere; then, according to a certain proportional ratio, the SiC-based synthesis material is added into the ultralow-carbon aluminum carbon fireproof material raw materialsto be sufficiently mixed; after the shaping, drying and high-temperature heat treatment, the ultralow-carbon aluminum carbon fireproof material with the improved silicon carbide base synthesis material is obtained; finally, heat shock resistant performance and slag resistant performance experiments are performed by using a heat shock test furnace and a static crucible method. The method has the advantages that on the premise of reducing the carbon content of the aluminum carbon fireproof material, the heat shock resistant performance and the slag resistant performance are improved; the qualityrequirement of the steel and iron metallurgy process on relevant fireproof material components can be reached; the process is simple and convenient; the implementation is easy; the raw materials arecheap and can be easily obtained; the mass production can be easily realized; good economic benefits and environment-friendly benefits are realized.
Owner:苏州佳耐材料科技有限公司

Construction method for sowing grass planting by spraying on side slopes in high-altitude areas

The invention discloses a construction method for sowing grass planting by spraying on side slopes in high-altitude areas. The construction method comprises the following steps of (1) paying off; (2)clearing slope surfaces; (3) installing anchor rods; (4) hanging nets; (5) spraying a plant growing medium; (6) curing; (7) accepting project. The construction method disclosed by the invention has the beneficial effects that by vegetation spray-sowing on the side slopes, the phenomena of washout of rainwater on the side slopes and water and soil loss are effectively prevented; due to formed near-earth microclimate, the driving environment of expressways is effectively improved, and the acceleration of the greening and beautifying processes of the environment in surrounding areas can be promoted; the mechanical degree is high, and the construction speed is fast; by stirring and spraying of a spray-sowing machine on materials such as soil, organic fertilizer, water-retaining agents, adhesives, water and the like, the uniformity of grass seeds is high, and after combination with the soil, the compact effect is achieved; after grass grows out, the coverage rate is high, and the grass andiron-wire meshes on the slope surfaces form a whole, so that the resistance to rainwater washout is greatly improved.
Owner:青海生源园林绿化工程有限公司
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