111 results about "Asbestos sheet" patented technology

The invention relates to a method for manufacturing a sealing gasket, in particular to a method for preparing a copy sheet used for a sealing gasket which does not contain asbestos fiber, belonging to the field of sealing materials. The copy sheet contains the main components of mineral cotton fiber, cellulose fiber, aromatic polyamide fiber, rubber cement and kaoline; the components are mixed to a dispersed system containing water, then a paper-making technique is adopted to dehydrate gradually and form a layer, and a finished product of the copy sheet is manufactured by compression, drying and vulcanization. The sealing gasket manufactured by the sheet has tensile strength, compression resilience performance, medium resistance and sealing performance and the like equivalent to that of the copying asbestos sealing gasket and can completely replace asbestos sheets for manufacturing the sealing materials of the gasket and the like.

The invention relates to an electronic device comprehensive environment accelerated storage testing device which comprises a temperature and humidity comprehensive testing box, a control microcomputer and a temperature and humidity tester. An outer box body of a box shell of the temperature and humidity comprehensive testing box is made of corrosion resistant plates, an inner box body of the box shell of the temperature and humidity comprehensive testing box is made of high-and-low temperature resisting corrosion resistant plates, and an insulating layer formed by the inner box body and the outer box body is made of high-density glass fiber cotton or asbestos plates. The control microcomputer and the temperature and humidity tester are both in conventional types. The electronic device comprehensive environment accelerated storage testing device has stable and balanced heating and humidifying capability, can carry out high-accuracy high-stability constant-temperature constant-humidity control and guarantees the safety of equipment and people. As for a temperature and humidity control part of the equipment, the programmable temperature and humidity tester is adopted to be capable of simulating different environmental conditions such as the high-temperature high-humidity environment, the high-temperature low-humidity environment, the low-temperature high-humidity environment, the high-temperature environment and the low-temperature environment. An accelerated storage service life evaluation method based on a reliability growth model avoids selection of an accelerated model, and the electronic device comprehensive environment accelerated storage testing device is mainly used in step-down stress accelerated service life tests and has good adaptability to electronic devices with complicated composition and failure mechanisms.

The invention relates to a preparation method for a cationic silicone / acrylic emulsion alkali resistant seal primer. The basic formula of the seal primer is as follows: 30% to 50% of emulsion, 4% to 8% of titanium dioxide, 5% to 12% of ground limestone, 5% to 10% of kaolin, 1% to 3% of talcum powder, 2% to 6% of coalescing agent, 1% to 5% of propylene glycol, 0.5% to 3% of thickening rheological agent, 2% to 5% of assistant and 20% to 35% of deionized water. The seal primer has the advantages of strong permeability, excellent weather and water resistance, good adhesion with substrate and paint, good self cleanness and environmental friendliness, excellent sealing performance, excellent alkali resistance and higher alkali and salting-out resisting performance. Therefore, the seal primer is suitable for being coated on the surfaces of external walls, internal walls, cement walls, concrete, gypsum boards, asbestos plates and the like.

The present invention is protecting slag detecting tool and method for detecting the thickness of the liquid slag layer, the sintered layer and the powder slag layer of the protecting slag in crystallizer of continuous slab casting machine. The detecting tool consists of copper pipe handle, wood or asbestos board, wooden clamp on the board, iron nail, and copper coated iron wire or one iron wire and one copper wire in the same length through the copper pipe and the board. During use, the copper coated iron wire or the iron wire and copper wire is inserted into molten steel inside the crystallizer for 4 sec before being withdrawn while the board is floated on the molten steel surface. The thickness of the liquid slag layer, the sintered layer and the powder slag layer is detected based on the corrosion and color change of the copper coated iron wire or the iron wire and copper wire. The detecting tool of the present invention has the service life as long as 600 heats of steel.

The invention relates to a method for manufacturing an electric arc furnace fume heat insulating pipe and the electric arc furnace fume heat insulating pipe thereof. The method comprises the following steps of welding V-shaped screw clasp nails on the inner wall of a fume pipeline; brushing a coal tar paint on the inner wall of the pipeline and the thread clasp nails; paving an aluminum silicate layer in the pipeline which is welded with the thread clasp nails and brushed with the coal tar paint; adding a steel wire net on the aluminum silicate layer; adding an asbestos plate on the galvanized steel wire net, and brushing an asphalt paint and a volatile agent on the asbestos plate; and using a ceramic fiber casting material to cast the asbestos plate, and carrying out plastering treatment, so as to obtain the electric arc furnace fume heat insulating pipe. The method for manufacturing the electric arc furnace fume heat insulating pipe can be used for manufacturing the electric arc furnace fume heat insulating pipe with the advantages that the heat insulating effect is good, and the service life is long.

The invention discloses a local thermal regenerative heating effect indoor test simulation method for an asphalt pavement, which can be used for accurately analyzing a local heat regenerative heating effect, belongs to the technical field of thermal regeneration of the asphalt pavement, and is used for solving the problem that a heating effect of the interior of the pavement in a local thermal regenerative continuous construction process of the asphalt pavement is difficultly and accurately judged. A track plate test piece is prepared at first, temperature sensors are embedded in the center of the test piece and on the 1 / 4 part of a diagonal in a different-thickness form; the surrounding of the test piece is covered by using a heatproof asbestos board, and a thermocouple wire is connected with a temperature recording instrument; a local thermal regenerative heating device is simulated by using a far-infrared quartz heating plate, the heating plate is fixed above a track plate in certain height by utilizing an iron frame; a power switch of the heating plate is switched on and regulated to the required radiation power to be preheated; finally, the test piece is heated by simulating two heating ways including one-off scene local thermal regeneration and intermittent scene local thermal regeneration respectively, the different position temperatures of the test piece in a heating process can be recorded, and the heating effect of the interior of the track plate test piece of an asphalt mixture under different heating ways can be analyzed.

A non-asbestos gasket sheet including a composition which includes a base fiber containing an organic fiber as a major fiber component, rubber, a filler, and a rubber chemical, the amount of the organic fiber in the composition is 15 to 30 wt %, and the filler including graphite. The non-asbestos gasket sheet exhibits tensile strength equivalent to or greater than that of an asbestos joint sheet, and can be used under high temperature conditions.

The non-asbestos sheet gasket is obtained by making a slurry containing an organic fiber, a rubber, a filler, and rubber chemicals into a sheet, drying the sheet, and rolling the dried sheet. The organic fiber is contained in an amount of at least 30% based on the sheet gasket. The invention provide an NA (non asbestos) sheet gasket having excellent sealability and tensile strength equivalent to that of an asbestos sheet gasket.

The invention discloses a wide flexible asbestos board layering and overturning system. The problems of layering of wide asbestos pads and overturning of a single asbestos board are solved. The wide flexible asbestos board layering and overturning system comprises a rack, a positioning mechanism, a layering mechanism, a suction mechanism, an overturning mechanism, a conveying mechanism and a control unit. The control unit detects the real-time height of an asbestos board stack and controls the layering mechanism to ascend, descend and translate on the rack, so that asbestos boards are stripped. A proximity switch is installed at the bottom of the suction mechanism and feeds a distance signal between the suction mechanism and the asbestos board stack back to the control unit, and therefore the control unit controls the suction mechanism to suck the stripped asbestos board on the topmost layer and transfer the asbestos board to the overturning mechanism, the overturning mechanism conveys the single asbestos boards to the conveying mechanism after overturning the single asbestos boards, the single asbestos boards are conveyed to the next station through the conveying mechanism, and the control unit repeats the above procedures at the same time till all the asbestos boards on a goods shelf are overturned and conveyed. The system reduces manual participation and relieves harm to human health in the processing process.

The invention discloses a polytetrafluoroethylene welding sandwich gasket which comprises a braided rubber asbestos pad layer and a polytetrafluoroethylene shell. The polytetrafluoroethylene shell totally covers the braided rubber asbestos pad layer. The braided rubber asbestos pad layer is formed by a rubber braided asbestos board, and is totally covered with the polytetrafluoroethylene shell to form a composite gasket. The polytetrafluoroethylene welding sandwich gasket is simple in structure, convenient to produce, low in cost, acid resistant, alkali-resistant, corrosion resistant, aging resistant, long in service life and good in sealing performance.

The invention discloses a device for smokeless carbonizing treatment on crop straws. The device consists of a carbonization furnace and a purifying device, wherein the carbonization furnace comprises a furnace cover clamped and inserted with an insulating material asbestos board, a furnace body shell, a carbonization chamber, a bottom plate, an ash discharging port, a smoke pipe, a furnace door and a wind inlet; and the purifying device comprises a smoke tee, an axial flow AC blower, a PPR adapter, a spray header, a corrugated tube, a PPR tee, a control ball valve, a magnetic drive circulating pump, an outside ball valve, a stainless steel frame and a collecting barrel. The air pollution problem in the carbonization process is greatly solved, and plenty of generated PM2.5 and PM10 particulate matters are completely absorbed through a spraying and spiral purifying secondary system. The quality of the produced biomass charcoal is high. Because the input quantity of the oxygen in the whole carbonization process is low, the shortcoming of inaccurate oxygen quantity controlled by men is avoided; and except a small quantity of the ash contents are generated in the furnace mouth due to ignition, the other straws are uniformly carbonized and the biomass charcoal almost has no ash content.

The invention discloses a test field for speaker sound. The test field is obtained by transforming a normal room, and comprises a closed space, wherein an empty space is formed in the top of the closed space; a round test hole is formed in the center of the top of the closed space; a test panel is mounted on the test hole; a clamp for mounting a speaker is arranged on the test panel; the panel surface of the test panel is coincided with the horizontal plane of the top of the closed space; the test panel is fixed at the top of the room through a lifting device; soft high polymer materials are mounted at the periphery of the test hole and are used for forming a totally closed environment between the test panel and the test hole; five asbestos boards are arranged at the periphery of the lifting device in the empty space so as to form a cuboid-shaped sound absorption space; a microphone used for receiving the sound is arranged under the test panel in the closed space and is connected with a test control module. The test field provided by the invention is reasonable in structure, the inherent structural pattern in the prior art is changed, the installation construction problem which cannot be solved for a long time is solved, and the test field has excellent application prospects.

A method for coiling the truncated conic vortex spring includes such steps as cutting to obtain a long sheet strip, inserting its one end in an opening on a cylindrical mandrel, attaching an asbestor sheet to it, arranging a stop rod parallel with said mandrel and with a certain distance between them, driving the mandrel to rotate and forcing the sheet strip to be close to said stop rod, heating the sheet between them while winding, heat treating, cooling, and wetting and removing the asbestos sheet.

The invention discloses an easy-to-maintain antitheft charging pile which comprises a protective cover, an operation case and a heat insulation layer. A charging gun placement plate and a winding rotary shaft are arranged in the operation case, an outer lateral side of the operation case is provided with an air outlet, an exhaust fan is fixedly mounted in the air outlet, and the other outer lateral side of the operation case is provided with an air inlet. The heat insulation layer comprises an aerogel felt layer, asbestos plates and a waterproof heat-insulation coating layer, the asbestos plates are arranged on two surfaces of the aerogel felt layer, the asbestos plates and the asbestos plates are arranged in walls of the operation case, and the outer surface of the operation case is provided with the waterproof heat-insulation coating layer. The protective cover and the operation case are rotationally mounted together through a rotating plate. The easy-to-maintain antitheft charging pile has advantages that the internal temperature can be kept in an appropriate temperature, and a charging gun head and a charging wire can be protectively collected in the device, so that charging elements are less prone to corrosion and artificial destruction.

The invention relates to an induction furnace, a system for production of calcium carbide liquid with the induction furnace and a method. The induction furnace consists of a crucible, a quartz sand layer, a furnace shell and a furnace cover, the crucible top is provided with an opening, and a discharge port is disposed at the upper part of the side wall. The quartz sand layer is a shell with an open top, and the crucible is located in the inner cavity of the furnace shell. The furnace cover is located above the crucible top opening. An asbestos board is disposed outside the side wall of the quartz sand layer, the outside of the asbestos board is surrounded by an induction coil, and the outside of the coil is equipped with a water-cooled pipe. A casting body is fixed between the bottom of the quartz sand layer and the bottom of the furnace shell. The system for production of calcium carbide liquid with the induction furnace provided by the invention can make full use of the powder raw material that cannot be consumed by traditional airtight furnaces, and reduces the loss of powder.

The invention discloses a mobile rescue capsule, which comprises a buffer capsule body, a rescue capsule body A, a rescue capsule body B and an equipment capsule body, wherein the buffer capsule body and the rescue capsule body A are spliced by a flange and a sealed asbestos board, the rescue capsule body A and the rescue capsule body B are spliced by a flange and a sealed asbestos board, and the rescue capsule body B and the equipment capsule body are spliced by a flange and a sealed asbestos board; a buffer capsule end board is arranged out of the buffer capsule body; and an equipment capsule end board is arranged out of the equipment capsule body; after a sealed capsule door is opened, escaping people enter the buffer capsule body from the sealed capsule door and enter the rescue capsule body via the buffer capsule body; and all capsule bodies are tightly connected, channels are formed in the capsule bodies, and people who take refuge can freely pass through and can observe the external environment via an observation window. The mobile rescue capsule has the characteristic of simple structure, is transported in a split mode and is convenient to combine and install under the shaft.

The invention discloses a mould for manufacturing a bimetal plain thrust sliding bearing blank and a manufacturing method of the mould. The mould comprises a steel billet and asbestos plates. The steel billet is provided with an inner hole and an annular groove, the annular groove is formed in the hole wall of the inner hole, the inner hole is communicated with the annular groove, the two ends of the steel billet are provided with the corresponding asbestos plates in an adherence mode through high-temperature-resisting binding agents, central holes are formed in the asbestos plates, and the central holes of the asbestos plates are communicated with the inner hole of the steel billet. The mould is simple in structure and can solve the problem that alloy layers at the two ends of the bimetal plain thrust sliding bearing blank are prone to being cracked. The manufacturing method of the mould is further disclosed.

The invention provides an opener, which is designed and improved on the basis of an electric iron opener and is additionally provided with a spring and a heat-insulating asbestos sheet. The opener provided by the invention generates a round hole at an assigned part of a toner cartridge powder chamber or a waste powder chamber through hot melting, so that an injection-molded piece is difficult to burn by contacting the heat-insulating asbestos sheet with the surface of the powder chamber. Furthermore, a waste plastic sheet is popped out by a spring, so that the next operation is convenient. Therefore, the damage on the surface of the injection-molded piece is reduced in a production process, the working efficiency is improved, and the labor cost is reduced.

The invention discloses an environment-friendly waterproof building outer wall construction method. The environment-friendly waterproof building outer wall construction method comprises the followingsteps that a, rust removal is conducted on exposed metal of an outer wall body, a steel shovel is used for flatly shoveling a protruding part of the wall body, a brush is used for sweeping dust and powder, finally, high-pressure water is utilized for conducting clean flushing, and standing airing is conducted; b, 1:3 cement mortar with the thickness being 15 mm is used for screeding of the surfaceof the outer wall body, and a leveling layer is formed; c, the leveling layer is coated with a polymer cement waterproof coating with the thickness being 1.0-1.2 mm, and then a polymer waterproof mortar layer with the thickness being 3 mm is used for leveling and covering; d, the surface of an asbestos board is coated with a polyurethane bonding agent, and the asbestos board is glued to the polymer waterproof mortar layer; e, the other face of the asbestos board is provided with an anti-cracking waterproof mortar layer with the thickness being 6-8 mm, pressing of glass fiber gridding cloth isconducted, and then coverage of a layer of anti-cracking waterproof mortar layer with the thickness being 6-8 mm is conducted; and f, finally, the surface of the protection layer is provided with a facing layer. According to the technical scheme, the waterproof performance of the structure is enhanced, and the waterproof crack resisting performance of the outer side of a heat preservation layer is guaranteed.

The invention discloses a construction waste building block for a filling wall and a production process thereof. The construction waste building block is prepared from the following raw materials in parts by weight: 20 to 50 kg / m<3> of construction waste, 10 to 15 kg / m<3> of cement, 5 to 10 kg / m<3> of lime powder, 5 to 12 kg / m<3> of col slag, 3 to 9 kg / m<3> of gravel, 10 to 20g / m<3> of foaming agents, 15 to 25g / m<3> of glycine 2 retarders, 20 to 30g / m<3> of water reducing agents and 100 to 300g / m<3> of tackifiers. The construction waste is prepared from concrete waste materials, waste mortar,waste metal, brick and tile fragments, muck and waste asbestos boards. The glycine 2 retarders used in the process can retard the slurry solidification time; the sufficient time is provided for the slurry shaping; the phenomenon of slurry solidification before the slurry is used up cannot occur; the shaped building block is subjected to sufficient reaction, so that the intensity and the toughnessof the building block can be improved.

The invention discloses a heat dissipation device for a laser, and the device comprises: a cold row, which is provided with a frame groove on the upper surface, wherein the inner side of the frame groove is provided with a cold pipe, and is internally equipped with a plurality of first fans; a bottom frame, which is internally provided with a cavity and welded with a plurality of aluminum sheets at the upper end, wherein the plurality of aluminum sheets are combined into cooling fins, an asbestos plate is welded to the upper ends of the aluminum sheets, and a rectangular notch is formed in thelower portion of the bottom frame; through the arranged cold row, an arranged cold head and a matched auxiliary structure, two heat dissipation structures can be provided, efficient heat dissipationis provided in a water cooling mode, air cooling is assisted for heat dissipation, a bidirectional auxiliary cooling structure is formed through interaction of water cooling and air cooling, the heatdissipation effect is extremely excellent, the requirement for long-time service load can be met, an efficient heat dissipation effect can be provided, and the problem of high-temperature heat accumulation caused by long-time use is effectively avoided.

The invention discloses a novel magnesian board comprising a multi-layer composite decorative plate formed by interlayer composite of a non-woven fabrics enhancement layer, a glass fiber screen cloth enhancement layer, an organic compound adhesive and a wood powder magnesian gelling material composite layer; the novel magnesian board is good in intensity, fireproof, waterproof, heat-proof, soundproof, and environmental protection; the novel magnesian board is drillable, can be planed, and can be sewed like wood plates; the non-woven fabrics enhancement layer enables the surface to be flatter, so the board is high in intensity, good in toughness, hard to broken, and the non-woven fabrics layer is convenient for late stage processing; the novel magnesian board can solve the problems that existing wood material is not fireproof, and poor in plasterboard intensity; the novel magnesian board can replace wood material, plasterboard, asbestos board and plastic sheet material, and is suitable for indoor / outdoor decoration of various modern buildings.

The invention relates to a clutch capable of immediately stopping after hand leaving. The clutch comprises a transmission power shaft, a belt pulley, a clutch seat, a clutch device, a driving disc and clutch adjusting bolts, and is characterized in that the driving disc of the clutch device is concave; besides, an internal spline is arranged in the concave part of the driving disc; holes are uniformly distributed in the driving disc; the driving disc penetrates through a spring sleeve; clutch compression springs are placed inside the spring sleeve; the clutch adjusting bolts penetrate through a main pressing plate, the clutch compression springs and the driving disc; a clearance between the main pressing plate and the clutch compression springs is adjusted through tightening and loosening a nut II; the clutch compression springs press middle pressing plates and asbestos sheets through the spring sleeve, so that friction is generated among the middle pressing plates, the asbestos sheets and the driving disc; and the asbestos sheets drive the middle pressing plates and the driving disc to transmit power onto the transmission power shaft. Compared with the prior art, the clutch has the advantage that the function of protecting agricultural machinery and personal safety of operators is achieved under the condition that original functions of a traditional clutch are not changed.

The invention relates to a steel-making smelting technology, in particular to an electric arc furnace and a preparation method thereof. The electric arc furnace comprises a hearth, a furnace cover, an electrode, a tap hole and a furnace door, wherein the electrode is inserted into the furnace through a hole in the furnace cover, the furnace cover covers the hearth, the tap hole and the furnace door are formed on a covering place between the furnace cover and the hearth, an asbestos board is laid closely on the surface in a furnace body of the hearth, alumina bricks are laid on the asbestos board, magnesia is laid on the alumina bricks, brine magnesia is scattered on the surface of the alumina bricks so as to be solid, and magnesia pipes and magnesia carbon bricks are laid on the alumina bricks until the furnace door is level to the tap hole. According to the electric arc furnace, a water tank in the conventional electric arc furnace is replaced, the weld failure of the water tank caused by erosion of the water tank by the molten steel or the excess temperature is avoided, so that the water and the molten steel cannot be mixed to cause explosion of a smelting furnace and potential safety hazard so as to destroy the equipment and increase the production cost, and meanwhile, the influence on the quality of the produced products caused by the steel drop of the molten steel due to the contact of the molten steel and the water is avoided.

The invention discloses a peanut frying device. The peanut frying device comprises a housing, wherein flame nozzles are fixedly mounted on the inner wall of the housing; a collecting box is arranged at the lower end of the housing; the housing is fixedly mounted at the upper ends of foot rests; a feeding opening is formed in the upper end of the housing; baffle plates are fixedly mounted at the middle part of the housing; a rotating shaft is rotatably mounted on the inner sides of the baffle plates through a first bearing; fixing plates are arranged on the outer side of the rotating shaft; a fixing block is fixedly mounted at the right end of the rotating shaft; a clamping block is fixedly mounted at the middle part of the fixing block, and is rotatably connected with a second motor; a rotating sleeve is rotatably mounted on the outer sides of the baffle plates; an opening groove is formed in the outer side of the rotating sleeve; a rotating disk is fixedly mounted at the end part of the rotating sleeve; and a connecting block is fixedly mounted on the right side of the rotating disk through an asbestos board, and is rotatably connected with a first motor. The peanut frying devicedisclosed by the invention is stable in operation and simple in structure, and stir-fried peanuts can be conveniently and swiftly discharged to the collecting box.

The invention discloses an asbestos board conveying manipulator which comprises a fixed plate, a hydraulic cylinder I, a fixed disk, a motor, a cylinder, an L-shaped fixed plate I, an L-shaped fixed plate II, a hydraulic cylinder II, a manipulator claw I, a manipulator claw II, a guide rail and a fixed hole. The invention is characterized in that the fixed plate I is provided with a polished rod; the polished rod is provided with the fixed disk; the fixed disk is provided with the hydraulic cylinder I, the motor and the cylinder; the cylinder is connected with the L-shaped fixed plate I; the L-shaped fixed plate I is connected with the fixed manipulator claw II; the L-shaped fixed plate I is provided with the guide rail; the L-shaped fixed plate II is fixed on the guide rail; the L-shaped fixed plate II is connected with the manipulator pawl II through the fixed hole; the L-shaped fixed plate I is provided with the hydraulic cylinder II; and a cylinder lever of the hydraulic cylinder II is connected with the L-shaped fixed plate II. The invention has the advantages of simple structure and high operational reliability, and lowers the labor intensity.

The invention discloses a nonmetal fireproof building material flame-retardant plate. The nonmetal fireproof building material flame-retardant plate comprises a base plate, asbestos plates, perlite plates and panels, wherein the inside of the base plate is of a hollow structure; the inside of the base plate is filled with a fireproof filling material; the two asbestos plates are respectively arranged on the upper surface and the lower surface of the base plate; the two perlite plates are respectively arranged on the outer surfaces of the two asbestos plates; and the two panels are respectivelyarranged on the outer surfaces of the two perlite plates. According to the flame-retardant plate, the asbestos plates and the perlite plates have excellent fireproof performance; meanwhile, the fireproof filling material in the base plate is capable of further improving the flame-retardant effect of the flame-retardant plate and also achieves an effect of supporting the base plate; the strength of the base plate is improved; and the flame-retardant plate is firm and durable.

A manufacturing method of glass mosaic plate is provided to save manufacturing time and process distinctively and express natural colors by printing on glass, breaking glass and joining broken pieces of glass by heat unlike a conventional method joining pieces of glass of regular shapes. The glass mosaic plate is manufactured by the following steps of: (i) printing on a transparent glass with glass paints; (ii) firing the printed glass at 430-640deg.C to form a marble pattern on the glass; (iii) firing firstly fired glass at 600-740deg.C for 4-10min according to thickness; (iv) quenching for 3-6min under 200-300mAq of air pressure; (v) attaching asbestos, board and cloth to one side of cooled glass plate; (vi) applying impacts on a point of the glass with a sharp tool; (vii) thermal treating the broken pieces of glass at 650-850deg.C for 15-30min to form smooth mosaic lines. The glass paints are prepared by the following the steps of: mixing one coloring-metal oxide selected from Cr2O, CaO, SeO2 and MnO with metal oxides such as SiO2, PbCrO4, B2O3 and Na2O3; firing and grinding to powder; preparing a molten material, acrylic resin, by adding resin or acryl to solvent or thinner; and mixing prepared acrylic resin with the mixed oxide powder in a ratio of 6-10 : 1.

The invention provides a steel separating agent for a rotary platform and a furnace cover of a ladle refining furnace and a method for preventing the steel bonding of the rotary platform and the furnace cover of the ladle refining furnace, wherein the steel separating agent comprises the following components in percent by weight: 8-15 percent of high-alumina aggregate powder, 5-8 percent of quartz sand powder, 4-6 percent of silica micropowder, 25-35 percent of phosphorus-sheet graphite powder, 5-10 percent of zircon sand powder, 4-8 percent of organic bentonite, 10-18 percent of aluminium dihydrogen phosphate liquid and 15-25 percent of water. After the steel separating agent provided by the scheme is adopted, the difficult problem of steel bonding at all parts of the ladle refining furnace is effectively solved, the normal refining production time is greatly saved, the steel refining environment is effectively improved, the original fussy working for repeatedly bedding asbestos plates is eliminated, the production cost and the production time are greatly saved, and the economic value is higher.