20results about How to "Improve roasting efficiency" patented technology

The utility model provides a roasting device for graphite electrode production, which belongs to the field of graphite electrode processing equipment and comprises a roasting box and a filter plate slidably connected to the inner wall of the roasting box, an upper sliding groove and a lower sliding groove are formed in the side wall of the roasting box, and a group of upper sealing plates are slidably connected to the side wall of the roasting box through the upper sliding groove. A transparent plate is fixedly connected to the side wall of the upper sealing plate, a set of lower sealing plates are slidably connected to the side wall of the roasting box through lower sliding grooves, limiting blocks are fixedly connected to the bottom walls of the lower sealing plates, fixing bolts are in threaded connection with the inner walls of the limiting blocks, the ends, penetrating through the limiting blocks, of the fixing bolts are further in threaded connection with the roasting box, and evenly-distributed overturning rollers are rotationally connected to the inner wall of the roasting box. The inner wall of the roasting box is connected with a cleaning part used for cleaning the overturning roller, the outer surface of the overturning roller can be cleaned through a first cleaning ring and a second cleaning ring when the overturning roller rotates, the service life of equipment is prolonged conveniently, and meanwhile the heating uniformity of the graphite electrode is improved.

The present invention discloses a catalyst carrier mesh belt kiln, which belongs to the technical field of mesh belt kilns, including a kiln body, an inner cavity of the kiln body is provided with a conveyor mesh belt, and power is provided between the conveyor mesh belt and the kiln body through a magnetic conductive mechanism, a pushing mechanism for pushing the catalyst material is provided on the top of the conveyor mesh belt, and a spreading mechanism for spreading the catalyst material is provided on the side of the pushing mechanism. The present invention sets a magnetic conductive mechanism and utilizes the application of magnetic power-on technology to achieve rapid switching of the connection and disconnection of the circuit, and at the same time sets the conveyor mesh belt in a segmented connection mode, and powers on through the mutual magnetic connection of the first magnetic block and the second magnetic block, and powers on the conveyor mesh belts currently connected separately through the heat conductive block, so that the catalyst at the current position can be roasted or dried, and the problem of excessive accumulation of catalysts, resulting in excessive volume and affecting the roasting or drying effect can be avoided.

A method for preparing ferrochrome through chromium slag suspension roasting pre-reduction-electric furnace smelting belongs to the field of mineral processing, and comprises the following steps: crushing chromium slag, and preheating to obtain a preheated material; the preheated materials are fed into a suspension roasting furnace, N2 gas is introduced into a furnace body, and the materials in a system are dehydrated under the action of high temperature; h2 and N2 are introduced into the suspension roasting furnace, the materials are in a suspension state under the action of ascending air flow, roasted product roasted sand is obtained and directly fed into the electric furnace through a pipeline for melting separation, ferrochrome obtained after melting separation of the electric furnace enters a cooling tower to be cooled and then is stored in a storage bin, and tailings enter a slag pool to be cooled and then are placed in a slag storage bin. The suspension magnetization roasting technology provided by the invention has the characteristic of large gas-solid contact area, the roasting time is greatly shortened, the roasting efficiency is improved, and the cost is reduced.

The present invention relates to the technical field of energy-saving roasting of coated sand, and discloses a regenerative coated sand roasting furnace, comprising a main body, a combustion chamber is arranged in the main body, an igniter facing the combustion chamber is installed on the main body, and a feed chamber is fixed on one side of the main body, one side of the combustion chamber is connected to the feed chamber, and the side of the combustion chamber away from the feed chamber is connected to a preheating bag, and the preheating bag is connected to an exhaust pipe; a baffle is arranged in the feed chamber, and a preheating chamber connected to the exhaust pipe is opened in the side wall of the feed chamber; the preheating chamber is connected to the exhaust pipe. The present invention has a simple structure, and the waste gas discharged from the combustion chamber is sent into the feed chamber to preheat the sand particles. The sand particles with a certain temperature enter the combustion chamber, which can reduce the heat consumption in the combustion chamber, thereby reducing the use of natural gas and reducing the roasting cost of the sand particles.

The utility model discloses a rotary furnace for roasting molybdenum oxide, which comprises a base, and a rotary table is arranged above the base; the second mounting lug plate is arranged at the upper end of one side of the base, a third fixing rod is arranged in the second mounting lug plate, a second rotating rod is arranged outside the third fixing rod, and a hydraulic telescopic device is fixedly arranged at the upper end of the second rotating rod; a connecting base is fixedly arranged at the upper end of the telescopic end of the hydraulic telescopic device, and second fixing rods are fixedly arranged at the front end and the rear end of one side of the rotating table. The first mounting lug plate is arranged at the upper end of the other side of the base, a first fixing rod is fixedly arranged in the first mounting lug plate, and a first rotating rod is arranged outside the first fixing rod. And the molybdenum oxide is easy to fall out from the two ends of the rotary furnace when the rotary furnace is used for roasting.

The invention relates to a temperature-controlled roasting rotary kiln, a building method and a roasting process, and belongs to the technical field of mine mining. Comprising a furnace body, a heat preservation layer, an air blowing system, a combustion chamber, a combustor, a feeder, a stock bin and a discharging port, the heat preservation layer is arranged on the inner wall of the furnace body, the combustion chamber is arranged on the outer wall of the furnace body, the combustor is assembled in the combustion chamber, the combustor is communicated with an external combustion gas source, and the combustion chamber is communicated with the interior of the furnace body through a heat transfer pipe arranged in the furnace body. The device is reasonable in design structure and process, the service life of the furnace lining is prolonged through the use of the metal lining, and the occurrence of lining adhesion is reduced. Through the application of the temperature control technology, a local high-temperature area in the kiln is eliminated, and therefore the ring forming phenomenon is avoided. And full contact with mineral powder in the kiln is ensured, and the reduction reaction efficiency is improved. Constant high temperature is kept in the kiln, and roasting efficiency and roasting quality are improved.

The invention discloses a uniformly-heated baking and frying device for processing roasted seeds and nuts, and belongs to the technical field of food processing, the uniformly-heated baking and frying device comprises a base and a baking and frying mechanism, the baking and frying mechanism comprises a support frame, a heating cylinder, a heating assembly, a filtering assembly, a stirring assembly, a driving assembly and a heat preservation assembly; the heating cylinder can be comprehensively and uniformly heated through the heating assembly, uniform temperature distribution on the inner side of the heating cylinder is guaranteed, the heating cylinder can be simultaneously driven to rotate through the driving assembly, the stirring assembly is driven to reciprocate on the inner side of the heating cylinder along the axis of the heating cylinder, and stir-frying operation can be conducted on roasted seeds and nuts on the inner side of the heating cylinder. The roasted seeds and nuts are uniformly heated, and the roasting effect is improved; the heat preservation assembly can be used for filtering smoke generated by baking and frying and fully utilizing heat of the smoke for heat preservation, operation is convenient and fast, after baking and frying are completed, the roasted seeds and nuts can be filtered through the filtering assembly, operation is convenient and fast, and the baking and frying efficiency is effectively improved.

The present invention relates to the field of suspension roasting technology, specifically a suspension roasting device for multiple varieties of alumina, comprising a roasting equipment frame and a roasting kettle mounted on the roasting equipment frame; the roasting kettle comprises a high-temperature heating machine, a high-temperature heat pump, a preheating chassis and a roasting chassis; an equipment platform is provided on the roasting kettle, the preheating chassis is mounted on the equipment platform, the roasting chassis is mounted on the preheating chassis, the bottom of the roasting chassis extends into the inner cavity of the preheating chassis and is connected to the inner space of the preheating chassis; a high-temperature machine installation box is provided on the roasting equipment frame, the high-temperature heat pump is installed on the inner side of the discharge box, the input end of the high-temperature heat pump is connected to the heat source output end of the high-temperature heating machine, and the heat source output end of the high-temperature heat pump is connected to the bottom of the roasting chassis. The present invention realizes flexible distribution and efficient utilization of thermal energy by independently setting up a preheating heating system, and realizes accurate measurement and real-time monitoring of the operating temperature of suspension roasting.

The invention relates to a vacuum furnace reduction process with coil discharge, which comprises the following steps of: manufacturing a plurality of square graphite plates, uniformly and densely forming a plurality of air holes in the graphite plates, and manufacturing a plurality of high-temperature-resistant stainless steel trays; at least two layers of graphite columns are stacked in stainless steel trays, graphite plates are horizontally laid on a transfer trolley, then the stainless steel trays containing the graphite columns are stacked on the surfaces of the graphite plates layer by layer, and the transfer trolley is driven to send the stacked graphite columns into a drying oven for low-temperature roasting; after low-temperature roasting, the whole graphite column is taken out through a transfer trolley and transferred to a vacuum furnace to be subjected to vacuum roasting; according to the process, graphite plates do not need to be placed layer by layer, a multi-layer graphite plate structure is removed, the effective utilization space of a vacuum furnace and a drying oven is greatly increased, the number of graphite columns loaded in each furnace can be increased by more than 30%, the material trays do not need to be manually loaded one by one during discharging, and the material trays loaded with the graphite columns are directly lifted and put into a turnover box; the block rotting rate is reduced, and the roasting efficiency and the yield are effectively improved.

This invention provides a microwave roasting equipment and process flow for iron extraction from red mud, relating to the field of red mud iron extraction technology. It includes a fixed base frame with a rotary kiln mounted on top. The rotary kiln comprises a furnace shell, furnace tubes, a discharge end pipe, a feeding assembly, a preheating assembly, a retention assembly, and a drive assembly. By incorporating the preheating and retention assemblies, this invention achieves effective preheating of the red mud particles, reducing the energy consumption required for roasting. Simultaneously, the retention assembly ensures uniform microwave action on the red mud particles, effectively improving the heating and roasting efficiency. The combined effect significantly reduces energy consumption during red mud roasting, and through this novel red mud iron extraction process, the iron grade of the obtained iron concentrate is greatly improved.

The invention discloses a catalyst carrier mesh belt kiln, and belongs to the technical field of mesh belt kilns, the catalyst carrier mesh belt kiln comprises a kiln body, an inner cavity of the kiln body is provided with a conveying mesh belt, the conveying mesh belt and the kiln body are electrified through a magnetic attraction conductive mechanism, and the top of the conveying mesh belt is provided with a pushing mechanism used for pushing catalyst materials. And the side part of the pushing mechanism is provided with a flattening mechanism for paving the catalyst material. By arranging the magnetic attraction conductive mechanism, connection and disconnection of a circuit can be rapidly switched by utilizing the application of a magnetic attraction power-on technology, meanwhile, the conveying net belt is arranged in a segmented connection mode, and power-on is conducted through mutual magnetic attraction connection of a first magnetic attraction block and a second magnetic attraction block; the conveying net belts connected with the conveying net belts at present are powered on through the heat conduction blocks, a catalyst at the current position can be roasted or dried, and the problem that the roasting or drying effect is affected due to the fact that the catalyst is accumulated too much and the size is too large can be solved.

A pressurized fluidized bed roasting system is disclosed, comprising a fluidized bed furnace tube and a pressurized roasting device. The fluidized bed furnace tube has a first fluidized gas inlet at its lower end and a first fluidized gas outlet at its upper end. The pressurized roasting device is arranged parallel to the fluidized bed furnace tube, and an opening communicating with the inner cavity of the pressurized roasting device is formed on the inner wall of the fluidized bed furnace tube, with a movable baffle at the opening. The pressurized roasting device has a second fluidized gas inlet at its lower end and a second fluidized gas outlet at its upper end. The pressurization method of the pressurized roasting device is to increase the gas flow rate or change the device volume. This pressurized fluidized bed roasting system provides preheating of materials in the fluidized bed furnace tube before feeding them into the pressurized roasting tube for pressurized roasting, shortening the roasting time, improving roasting efficiency and resource utilization, and solving the problem of long roasting times in conventional fluidized bed roasting processes.

The utility model discloses a calcium carbide furnace self-baking electrode device, which relates to the technical field of electrode baking and comprises a transmission structure, the transmission structure comprises a support, a heating cylinder is fixedly connected to the support, a first sliding groove is formed in the top of a transverse plate, a first screw rod is in threaded connection with the interior of the transverse plate, and a vertical plate is fixedly connected to the top of a first sliding block. A second sliding groove is formed in the side, away from the grip, of the vertical plate, a second lead screw is fixedly connected to the output end of the first motor, a second sliding block is in threaded connection with the second lead screw, a U-shaped frame is fixedly connected to the side, away from the grip, of the second sliding block, and a rotating shaft is fixedly connected to the output end of the second motor; according to the roasting device, the transverse plate and the vertical plate are matched with each other, so that the height position and the horizontal position of the storage barrel are adjusted, the storage barrel is fixedly rotated through the rotating rod, the problem that electrode paste in the storage barrel is heated unevenly is solved, and therefore the roasting efficiency is improved.

The invention discloses a nickel ore roasting kiln for waste heat recovery, and relates to the technical field of nickel ore roasting kilns, the nickel ore roasting kiln comprises a base plate and a heat recovery assembly, the heat recovery assembly is arranged above the base plate, and the heat recovery assembly comprises a discharging frame, a discharging groove, a partition frame, an air adding cover, a rotating groove, an air inlet pipe, an air adding groove, an air inlet, an inclined hole, a heat insulation shell and a heat absorption coil pipe; a discharging frame is arranged above one side of the chassis, and discharging grooves are symmetrically formed in one side of the discharging frame. When the device is used, heat emitted by the shell can be recycled, air is heated through the heat, the air supply temperature is increased, then the roasting efficiency is improved, heat of high-temperature tail gas can be used for conducting waste heat on raw materials, the roasting efficiency is improved, the raw materials are smashed before preheating, insufficient roasting caused by the fact that the raw materials are too large is avoided, and the service life of the raw materials is prolonged. During roasting, the raw materials can be turned and conveyed, and the suspension time of the raw materials is prolonged, so that the mixing effect of the raw materials and air is improved, and the roasting efficiency is improved.

The invention discloses an interlayer-free double-layer roller kiln lepidolite roasting production line which comprises a kiln body, a support, a heat preservation lining, a gas pipeline, gas spray guns and ceramic rollers. A heat preservation lining is fixedly connected to the inner wall of the kiln body, a support is fixedly connected to the outer wall of the kiln body, and a gas pipeline is fixedly connected to the support. A smoke exhaust area, a preheating area, a firing area, a quenching area, a heat exchange area and a tail cooling area are sequentially arranged in the kiln body, and the three layers of gas spray guns are arranged in the preheating area and the firing area; the input ends of the third layers of gas spray guns are fixedly connected with control valves in a communicating mode, and the input ends of the control valves are fixedly connected to the output ends of the gas pipelines in a communicating mode. Compared with an existing double-layer roller kiln, the interlayer-free double-layer roller kiln has the advantages that the interlayer-free design is adopted, the internal space of the kiln body is increased, smoke circulation is smoother, the temperature of the kiln body is increased faster, and therefore the production efficiency is improved; when the method is applied to the roasting production of the lepidolite, the roasting efficiency of the lepidolite can be effectively improved.

The invention provides a formula for roasting zinc concentrate in a fluidized bed furnace by matching multiple mineral types, and relates to the technical field of zinc concentrate roasting. The formula for roasting the zinc concentrate in the fluidized bed furnace matched with multiple minerals is suitable for a roasting furnace with the area of 50-142 m < 2 > and comprises the following components: 48-55% of Zn, 2.2-2.3% of Pb, 1.5-3% of S , 3-5% of Fe, 1.5-1.8% of Cu and 9-10% of water. The roasting efficiency is improved, the roasting process is smoother due to the fact that the roasted sand is uniform in particle size and not prone to blocking a hood and a rear system, and production interruption caused by blocking and other problems is reduced. And the service life of the roasting furnace is prolonged, the low-temperature co-melting body is prevented from adhering to the internal structure of the roasting furnace, the damage to components such as a hearth and a hood is reduced, and the maintenance cost is reduced. From the view of production operation records, the shutdown time of the fluidized bed furnace caused by roasting problems is shortened, the production stability and continuity of the whole sulfuric acid device are improved, and the economic benefits are increased.

The present invention discloses a pretreatment device for NdFeB waste before roasting, which mainly solves the problem that the existing NdFeB waste is not roasted sufficiently and affects the roasting efficiency. It includes: a flushing device, a crushing device, a straightening device and a roasting device. The flushing device has a left baffle, a right baffle, a front plate, a rear plate and a bottom plate. The right baffle is arranged on the right side of the left baffle; the front plate is arranged in front of the left baffle and the right baffle; the rear plate is arranged behind the left baffle and the right baffle; the bottom plate is arranged at the bottom of the left baffle, the right baffle, the front plate and the rear plate; the crushing device is arranged in front of the flushing device, the crushing device has a crushing box and a crushing reamer, and the crushing reamer is arranged in the crushing box for crushing NdFeB; the straightening device is arranged between the crushing device and the flushing device, the straightening device has a material baffle plate, and the material baffle plate is arranged between the crushing box and the front plate; the roasting device is arranged in front of the crushing device. The present invention has the advantages of sufficient roasting and high roasting efficiency.

The invention provides a sintering perforated brick production roasting device, and belongs to the technical field of brick production, the sintering perforated brick production roasting device comprises a base, and a roasting mechanism, a feeding mechanism and a discharging mechanism which are arranged on the base. According to the device, an adjusting rod in the feeding mechanism is matched with a positioning block in the roasting mechanism, and a roasting plate in the roasting mechanism can be rapidly released and fixed in the feeding and discharging process of porous bricks, so that rapid feeding and discharging of the porous bricks are achieved, and the situation that the brick bodies after roasting are too high and need to be taken out after being cooled is avoided; a rotating shaft in the discharging mechanism is matched with a toothed bar on one side of the feeding mechanism, so that fixation of the rotating shaft is guaranteed in the feeding process, and meanwhile, a roller shaft is driven to rotate in the return process of a push plate so as to drive a roasting plate on the upper portion of the roller shaft to move; and it is guaranteed that the roasted porous bricks and the roasting plate below the porous bricks can be completely separated from the roasting mechanism for discharging, the overall discharging effect is improved, and then the subsequent production efficiency is improved.

This application discloses a molecular sieve calcination furnace, relating to the field of calcination furnaces. The furnace includes a furnace body with a furnace door hinged to one side. An exhaust pipe and an inlet pipe are respectively fixed through the middle of both ends of the furnace body's outer wall. A feed pipe is fixed through the top of the furnace body. A servo motor is fixed to the top of the furnace body's outer wall, and a drive gear is fixed to the power output end of the servo motor. This device adjusts the position of the baffle according to the required size of the finished molecular sieve. By rotating the baffle at the bottom of the permeable mesh, the common gap between the first and second material leakage holes is adjusted. The servo motor is then activated, causing the first and second driven shafts to rotate in opposite directions. This drives each set of crushing rods to crush molecular sieves of different sizes at the top of each partition. The crushed molecular sieves then move downwards, thereby achieving the effect of crushing large-volume molecular sieves, improving calcination efficiency, and controlling the size of the molecular sieves after calcination.

The invention belongs to the technical field of gasification filter residues, and relates to a method for improving the roasting efficiency of gasification filter residues and application. The method comprises the steps that oil residue gasification filter residues are obtained, the oil residue gasification filter residues fall into a shredding machine to be crushed after being unpacked by ton bags, the crushed filter residues enter a Z-shaped bucket elevator to be lifted and sent into a raw material bin to be temporarily stored, then the filter residues are lifted to a proper height through a Z-shaped feeding bucket elevator, and the filter residues are distributed into a multi-section roasting furnace through a feeding turning plate to be roasted; the roasted filter residues enter an inclined spiral cooling conveyor to be cooled, and the cooled filter residues are conveyed to a finished product bin; and flue gas generated in the roasting process enters a cyclone separator to be treated. The method is applied to a gasification filter residue roasting device. According to the gasification filter residue roasting device, efficient treatment of filter residues is achieved, energy consumption and environmental pollution in the roasting process are reduced, the durability and stability of equipment operation are improved, and the gasification filter residue roasting efficiency is overall improved.