60results about "Chamber furnaces" patented technology

A portable kiln has a set of wheels, a handle and a platform base. The wheels and the handle are attached on a first side of the kiln so that the kiln can be tilted and rolled on the wheels using the handle. The platform base provides a spaced distance between the wheels and the floor when the kiln is sitting upright in an operational position. The kiln may also include a metal outer shell wrapped about an oven portion. The outer shell has a shell sidewall radially spaced from the oven portion sidewall, which forms an annular air channel between the outer shell sidewall and the oven portion. The outer shell has a C-shaped cross-section and it has upper and lower vent openings for the air channel. A hinge assembly allows a lid of the kiln to rest in an open position.

The present invention relates to a multi cell thermal processing unit. The thermal processing unit comprises an air tight common chamber containing an atmosphere other than ambient air. A loading cell is linked to the common chamber via a gas tight door for providing to and receiving from the common chamber a workpiece. Further, a preheating cell is linked to the common chamber via a heat insulating door. The preheating cell provides a substantially fixed temperature for activating the workpiece. Thermochemical processing of the workpiece is provided by a first and a second thermochemical processing cell each linked to the common chamber via a heat insulating door. The first thermochemical processing cell provides substantially fixed first thermochemical processing conditions for nitriding the workpiece. The second thermochemical processing cell provides substantially fixed second thermochemical processing conditions for post nitriding treatment of the workpiece. A cooling cell linked to the common chamber provides controlled cooling of the workpiece. The thermal processing unit according to the invention, wherein thermochemical processing cells are operated under substantially constant conditions considerably facilitates control functions for providing predetermined conditions. This allows a substantially more accurate control of the thermochemical processing conditions which is especially advantageous for reproducibly thermochemical processing workpieces using nitriding processes.

Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit.

The present invention relates to a burning apparatus and a method for manufacturing reduced iron using the same, and more particularly, to a burning apparatus heating a coal briquette to manufacture reduced iron, which includes a first burning furnace heating the coal briquette while moving the truck accommodating the coal briquette along a linear movement path; a second burning furnace connected to the other side of the first burning furnace, and heating the coal briquette while moving the coal briquette discharged from the truck along an annular path; and a cooling device connected to the second burning furnace, and cooling the reduced iron while moving reduced iron reduced in the second burning furnace along an annular path. The burning apparatus circulates exhaust gases generated in the burning furnace and cooling device to control a temperature and an oxygen concentration and thus improves a metallization rate of the reduced iron.

The invention provides a circular rotary heating furnace for long aluminum bars. The circular rotary heating furnace comprises a cylindrical heating furnace body (1), a rotary bar placing plate (2), a rotary conveying system (3), a burner (4), a feeding furnace door (5), a discharging furnace door (6), a discharging platform (7) and an induced draft fan (9). The rotary bar placing plate (2) is arranged inside the furnace body. The rotary conveying system (3) is arranged outside the furnace body and connected with a central rotating shaft of the rotary bar placing plate (2). The burner (4) and the induced draft fan (9) both communicate with the furnace body. The circular heating furnace is easy and convenient to operate, small in space, compact in structure, high in automation degree and heating rate and low in energy consumption, and the aluminum bars are heated uniformly; in addition, the jamming phenomenon cannot occur, so that the service life is long.

The invention discloses a method and a device for sintering hollow ceramic microspheres. The method comprises the following steps: step 1, rapidly mixing fuel gas with combustion-supporting air to react to form stable and continuous high-temperature flame, step 2, atomizing material particles and uniformly dispersing the atomized material particles into a flame reaction zone, and step 3, sinteringthe material with the high-temperature flame and then cooling to obtain a hollow ceramic microsphere product. The sintering device comprises a combustion-supporting air shell, a combustion cylinder,a powder conveying pipeline and a gas uniform dilution pipe, wherein the combustion-supporting air shell is communicated with a combustion-supporting air inlet pipe, the combustion cylinder is coaxially arranged in the combustion-supporting air shell, the combustion-supporting air shell is provided with a plurality of outlet pipes communicated with the combustion cylinder, the combustion cylinderis connected with an igniter, and the powder conveying pipeline and the fuel gas uniform dilution pipe are arranged at one end of the combustion cylinder. With application of the method, the hollow ceramic microbead product which is light in weight, high in strength, low in oil absorption rate, good in sound insulation, flame retardance and electrical insulation, low in heat conduction, wear-resistant and corrosion-resistant can be prepared at low cost.

The invention discloses a forming device for a bulletproof insert plate with a complex curved surface. The device comprises a furnace shell, a furnace cover, a supporting frame and a furnace barrel, wherein the furnace cover is arranged at the end port in the furnace shell through a rotating shaft frame, the furnace barrel is arranged in the furnace shell through a supporting frame, a setter plateassembly used for bearing boron carbide ceramic is placed in the furnace barrel, and the outer wall of the bottom of the furnace barrel is fixedly provided with a forming detecting assembly. According to the device, the setter plate in the furnace barrel is improved and optimized so that the volume shrinkage deformation of a boron carbide ceramic green body in the firing process can be monitoredthrough the setter plate; the reaction is performed by using a transmission part during shrinkage deformation of the green body so that the forming detecting assembly can detect the shrinkage deformation of the green body; and the temperature in a furnace is started to be controlled so that the temperature of the boron carbide ceramic during green body deformation in the firing process can be controlled, and the influence of over-high or over-low temperature on the green body firing quality is avoided.

The invention discloses a horizontal circulating heating furnace, and relates to the related technical field of horizontal furnaces. The horizontal circulating heating furnace comprises a furnace body, a sample fixing device and a driving device, wherein, the furnace body is sequentially provided with a heating area, a cooling area and a control area which are arranged at intervals in the horizontal direction; the sample fixing device is provided with a first temperature sensor for monitoring the temperature of a to-be-detected sample; the driving device is arranged in the control area, is connected with the sample fixing device and drives the sample fixing device to circularly move between the heating area and the cooling area; when the temperature of the to-be-detected sample is lower than a threshold value, the driving device drives the sample fixing device to move to the heating area; and after the to-be-detected sample is subjected to heat preservation in the heating area at the preset temperature for preset time, the driving device drives the sample fixing device to move to the cooling area. According to the horizontal circulating heating furnace, the driving device is adopted to drive the sample fixing device to circularly move between the heating area and the cooling area so as to circularly heat and cool the to-be-detected sample, and the detection efficiency of the thermal shock performance of the to-be-detected sample is improved.

The invention discloses a vertical ceramic tile drying and sintering kiln capable of achieving feeding and discharging. The kiln comprises a box body, the bottom end of the external circle face of thebox body is sleeved with a supporting frame, a plurality of supporting legs are evenly arranged on the external circle face of the supporting frame, a supporting plate is arranged among the supporting legs, a discharging cylinder is arranged at the top end of the supporting plate, the top end of the discharging cylinder is connected to the bottom end of the box body, a plurality of guide rail rods matched with the discharging cylinder are arranged in an inner cavity of the box body in a circular array mode, a lead screw is arranged among all the guide rail rods, and the lead screw is sleevedwith a drying box matched with the guide rail rods; the drying box is lowered through a motor, then, discharging and feeding are completed inside the discharging cylinder, the influence of high temperature of the kiln on workers is lowered due to the padding mode, and therefore the body health of the workers is ensured; by means of an internal circulation system formed between the box body and a water removal box, high temperature gas can bring away water vapor inside the box body constantly, so that the drying effect is improved, the high temperature gas can be recycled, and the thermal utilization rate is increased.

The invention relates to a mounting structure of a ceramic liner rotary kiln. The mounting structure comprises a barrel. A ceramic liner is arranged in the barrel, the ceramic liner is of a split structure, an extruding device is arranged on one side of the ceramic liner, the barrel comprises an outer barrel, and insulating layers are arranged on the inner periphery of the outer barrel. An iron core is loaded and unloaded by using the mounting structure, so that the technical blank of compacting the ceramic liner of the rotary kiln at home is filled, zero metal pollution to a material in a heating process is realized, and the ceramic liner is long in service life, high in production efficiency and safe and reliable in compacting effect. The mounting structure is simple to operate, convenient to mount and simple in later maintenance, can improve the production efficiency and save the cost, and protects the environment.

The invention relates to an industrial kiln for ceramic material production. The industrial kiln comprises a base; a console is arranged at the top of the base; the console comprises a cooling furnace, a high-temperature furnace and an isolation device; the cooling furnace is connected with the high-temperature furnace through the isolation device; a kiln port is formed in one end of the high-temperature furnace; a conveying table is arranged at one end of the console; a conveying belt is arranged at the top of the conveying table; belt wheels are arranged on two sides of the conveying belt; support columns are arranged at the bottom of the conveying table; a motor is arranged at the bottom of the conveying table; linkage belts are arranged between the motor and the belt wheels; the motoris connected with the belt wheels through the linkage belts; a ceramic placing plate is arranged above the conveying belt; a control table is arranged on one side of the base; a switch controller is arranged at the top of the control table; and a power supply socket is arranged on one side of the bottom of the base. The industrial kiln reduces the environment pollution, reduces the machining cost,and achieves various functions and high practicability.

The invention provides a ceramic brick sintering device for a building, and relates to the field of building equipment. The ceramic brick sintering device for the building comprises a kiln body, a tank body and a top cover, wherein an air inlet is formed in the center of the bottom of the kiln body, the tank body is arranged at the top of the kiln body, and the top cover is arranged at the top ofthe tank body. According to the ceramic brick sintering device for the building, a placing plate, a sliding block and a spring are matched with one another, after a blank is sintered into a ceramic brick, water is evaporated, the weight is reduced, so that an air pipe is exposed out of the upper body of the placing plate, and the detection effect is achieved; a storage bin, the air pipe, a water pipe and a heat conducting piece are matched, a piston rod is pushed by means of the heated transpiration of the liquid, so that two sealing plates are close to each other to seal the air inlet; the effect of automatically closing the air inlet after sintering is achieved; and then the sealing plates, an electric push rod and a heat insulation plate are matched, the kiln body is sealed, and the loss of hot air is reduced; and the situation that the ceramic brick cracks due to the fact that the temperature change is large because of the rapid loss of heat after sintering is avoided.

The infrared baking device includes: a furnace chamber having an opening openable/closable by an opening/closing cover and allowing an internal space thereof to be tightly sealed; a baking object placement portion on which a baking object is to be placed and which is extractable/insertable through the opening; a heater lamp for heating the heating object by infrared rays; and a thermocouple provided at the baking object placement tray. A furnace wall of the furnace chamber is configured so that infrared rays from the heater lamp are collected and radiated to the tray. The thermocouple is provided in a contactor to contact with the tray. The tray and the contactor are made of the same material which absorbs the infrared rays.

A round underground heat-insulating brick kiln comprises a round main kiln cavity with an opening at the top. The main kiln cavity is positioned underground, a cover plate is arranged at the top of the main kiln cavity, a pair of parallel guide rails are arranged at the opening of the top of the main kiln cavity, the cover plate can move along the guide rails to enable the top of the kiln cavity to be closed or opened, a heat-insulating layer is arranged in the cover plate, and a material and personnel passage is formed on the side wall of the kiln cavity; a burning area is arranged in the middle of the main kiln cavity, and a smoke hole corresponding to the burning area in position is formed in the cover plate. By adopting the round underground heat-insulating brick kiln, fuel heat utilization efficiency and one-time firing number are increased; vertical excavation and the top movable cover plate are adopted, so that earthwork load of the brick kiln is reduced; in order to substantially improve heat-insulating performance in the side wall direction of the kiln cavity, the top movable cover plate can be completely opened when ventilation and air feeding are needed, so that convenience is brought to quick cooling inside the kiln cavity and completion of fresh air exchange, and personnel is avoided being scalded or injured due to inhaling of toxic waste gas.

The invention discloses a hydration sintering device. The hydration sintering device comprises a sintering furnace provided with a sintering container and a heating element inside, a storage container for storing water base pulp, a stirring element arranged in the storage container and used for stirring the water base pulp, a stirring driving element for driving the stirring element to rotate, a conveying pipeline for connecting the sintering furnace with the storage container, and a conveying device matched with the conveying pipeline and used for conveying the water base pulp in the storage container into the sintering container of the sintering furnace. The hydration sintering device can perform the hydrolysis operation; and when the water base pulp drops into the sintering container, water in each drop of the water base pulp is quickly evaporated, so that the sintering can be quickly implemented. The sintering temperature can be preferably lowered through the hydrolysis process; and compared with other traditional sintering methods, the insulation time is shorter.

The invention provides a heating and crushing processing system for waste rock solids in coal mining. The eating and crushing processing system comprises a calcinator, a calcining mechanism, a slidingplate, an electric push rod, a crushing box, a crushing mechanism and a supporting frame. The heating and crushing processing system can solve the following problems existing in the process of crushing and processing the waste rock solids in a coal mine: a, for coal mine waste rock crushing modes, in a traditional process, the coal mine waste rocks are conveyed into a crusher for stirring and rolling and decomposed into recyclable fine particles, no crushing pretreatment is conducted on the coal mine waste rocks in the traditional process, and it is difficult for the crusher to roll the coalmine waste rocks into small pieces; and b, generally, a traditional crusher is used for crushing the coal mine waste rocks, in this way, it is difficult to ensure that the coal mine waste rocks are 100% broken into required small pieces, the traditional crusher has low use efficiency and high labor cost, and it is often necessary to carry out secondary crushing on the broken waste rocks to ensurethat the broken small pieces can be used.

The invention relates to the technical field of sintering furnaces, in particular to a sintering kiln. Comprising a bottom shell and a sintering furnace body, the sintering furnace body comprises a sintering furnace outer barrel, a machine cover and a sintering furnace inner container, the sintering furnace outer barrel is fixedly connected to the top end of the bottom shell, threaded surfaces are arranged inside the bottom end of the machine cover and outside the top end of the sintering furnace outer barrel, and the machine cover is in threaded connection with the top end of the sintering furnace outer barrel; through the designed filtering assembly, the reciprocating mechanism matched with the filtering assembly to work and the material spreading mechanism, combustion waste gas in the furnace can rapidly pass through filtered gas materials, and the problem that the gas pressure in the furnace is too large due to the fact that the waste gas overflows too slowly is solved; the sintering furnace is flexible, an operator can place materials to be sintered conveniently, and the working efficiency is improved.

A high temperature furnace includes features that provide for multiple heating zones for heating a specimen extending at least partially through a heating chamber defined by the furnace. In one exemplary aspect, the furnace can include multiple heating elements extending at least partially through the heating chamber. Each heating element can be configured in a rod shape, which allows for multiple heating zone capability, better control over the temperature gradient, reduced current to achieve a desired temperature output, and a streamlined furnace shell.

The invention discloses a heating furnace convenient to clean and maintain and high in energy efficiency. The heating furnace comprises a furnace platform of which the feeding end and the discharging end are the same in structure. A plurality of heating furnace cavities are formed in the upper plane of the furnace platform at intervals. A partition plate which can be slidably opened or slidably clamped covers the upper end of each heating furnace cavity. The bottom of each heating furnace cavity is provided with a heating pipe assembly which can be horizontally pulled out from or horizontally pushed into the bottom of the heating furnace cavity to be clamped. The bottom of each heating furnace cavity and the corresponding heating pipe assembly are partitioned through a heat dissipation plate. By means of the structure design, easy disassembling and assembling can be achieved without the step of disassembling screws. According to the heating furnace convenient to clean and maintain and high in energy efficiency, heating pipes which can be horizontally inserted and installed are designed and directly heat air in heating pipe installation cavities; hot air is brought to the heating cavities through heat dissipation fans; through the air direct heating mode, the steps that the partition plates are heated at first, and then heat energy is transmitted to air are not needed, and the heat energy utilization rate is higher; and in addition, the heating pipes are convenient to disassemble and can be timely cleaned and replaced.

The invention discloses a production process and production equipment for a high-stability fused cast zirconia-corundum brick. The preparation method comprises the following steps: preparing a mixture, melting, casting, and carrying out heat preservation annealing, and demolding, wherein the ingredients comprise the following components in parts by weight: 35-40 parts of ZrO2+HfO2, 2-14 parts of SiO2, 1.2-1.6 parts of Na2O, 0-3 parts of rare earth and the balance of Al2O3, and the total weight parts of the ingredients are 100 parts; the ingredients comprise clinker and raw materials in the same proportion, the clinker is a block, the particle size of the clinker is 3-8cm, and the raw materials are powder with the particle size of 0.05-1.5 mm; the clinker accounts for 10-30%; in the meltingprocess, 1/2-3/5 of molten materials are reserved in a furnace body, and the clinker is directly poured into the center of the furnace body through a hopper; the raw materials are subjected to microwave heating before entering the furnace body; the lowest point of the raw materials entering the furnace body should be above the highest liquid level in the furnace body, and the distance between thelowest point and the highest liquid level is 1/2-3/4 of the distance between the highest liquid level and the reserved liquid level; and the included angle [alpha] between the direction of the raw materials entering the furnace body and the horizontal liquid level is 30-60 degrees. According to the production process and production equipment, the melting efficiency can be effectively improved, the uniformity of feed liquid components is improved, and the energy consumption is reduced.

There is provided a top-firing hot blast stove capable of enhancing combustion efficiency in burner system, supplying high-temperature combustion gas to an entire checker chamber, and suppressing damage on a refractory material on an inner wall of a burner duct.

A top-firing hot blast stove 10 has a burner system including: a burner 1 for passing fuel gas or combustion air to each of three or more pipe lines in a multiple pipe line structure; and a burner duct 2. A core pipe line 1b and a central pipe line 1c include a swirling flow generating means provided for generating a swirling flow of the fuel gas or the combustion air, while an outermost pipe line 1d carries a linear flow of the fuel gas or the combustion air, so that combustion gas HG including a linear component HG″ and a swirling component HG′ is generated in the burner duct 2. The combustion gas HG is supplied to a combustion chamber 3 from at least one or more of the burner systems in an inflow direction which does not pass through a center position of the combustion chamber 3.