23 results about "Firebrick layer" patented technology

The lime kiln lining structure comprises a kiln top lining and a kiln body lining, and the kiln body lining comprises a first refractory brick layer, a second refractory brick layer, a first heat insulation layer, a second heat insulation layer and a third heat insulation layer which are sequentially arranged from inside to outside. Contact surfaces between two adjacent bricks in the first refractory brick layer are in concave-convex fit and are in sealed connection; the strength of the kiln top lining is higher than that of the first refractory brick layer, the second refractory brick layer, the first heat insulation layer, the second heat insulation layer and the third heat insulation layer, and the kiln top lining extends downwards to form a reinforcing part; kiln protecting plates are arranged on the inner side face of the kiln top lining and the upper side surface of the side, away from the second refractory brick layer, of the first refractory brick layer. The stability of the lime kiln lining can be enhanced, and the service life of the lime kiln can be prolonged; meanwhile, the heat preservation performance of the lime kiln can be enhanced, and heat loss is reduced.

The utility model discloses a heat preservation chute and a flue gas waste heat utilization system, a chute body of the chute comprises a refractory brick layer and a first heat preservation layer which are sequentially arranged from inside to outside, a flue gas channel is arranged in the side wall and / or the bottom of the chute body, and the flue gas channel is arranged between the refractory brick layer and the first heat preservation layer. The flue gas channel extends along the length direction of the tank body; a flue gas inlet and a flue gas outlet which extend towards the outer side of the tank body are formed in the first thermal insulation layer; and the flue gas inlet and the flue gas outlet are respectively communicated with the flue gas channel. According to the heat preservation chute and the flue gas waste heat utilization system, the technical problem that in the prior art, heat preservation energy consumption of a chute is high is solved.

The application discloses a crude benzene hydrogenation waste gas incineration device with waste heat recycling function, which comprises a furnace body, a support is fixedly installed outside the furnace body, a refractory brick layer is arranged on the inner wall of the furnace body, an installation pipe is communicated with one end of the furnace body, a discharge pipe is communicated with the bottom of the other end of the furnace body, a bend pipe is communicated with the end of the furnace body away from the installation pipe, an ash collecting metal mesh is movably installed in the bend pipe, a branch pipe is communicated with the top end of the bend pipe, and a threaded plate is fixedly installed in the branch pipe. The ceramic fiber felt is arranged, the first spray pipe and the second spray pipe spray the corresponding contents into the furnace body during operation, the ceramic fiber felt is used for heat insulation of the first spray pipe, the second spray pipe, the furnace body and the refractory brick layer, the temperature is reduced to be led out to the outside world, the influence on the first spray pipe and the second spray pipe is reduced, the overall structure effect is stabilized, and the device is convenient to use.

The utility model relates to the technical field of rotary kiln lining structures, in particular to a high-temperature rotary kiln lining structure which comprises a kiln body, a reinforcing layer arranged on the inner side of the kiln body, a heat preservation layer arranged on the inner side of the reinforcing layer, a heat insulation layer arranged on the inner side of the heat preservation layer, and a refractory brick layer arranged on the inner side of the heat insulation layer and composed of refractory brick bodies. A bending groove is formed in one side of the refractory brick body, a first limiting block and a second limiting block are arranged on the other side of the refractory brick body, a positioning groove is formed in the front side of the refractory brick body, a limiting protruding strip is arranged above the positioning groove, a limiting groove is formed in the rear side of the refractory brick body, and a positioning protruding block is arranged below the limiting groove. According to the utility model, the limiting blocks I of the adjacent refractory brick bodies are inserted into the bending grooves, and the adjacent refractory brick bodies are guided by the limiting blocks II until the limiting blocks I are propped against the inner sides of the bending grooves after passing through the turning parts of the bending grooves, so that the limiting of the refractory brick bodies is realized, and the flexibility during the assembly of the refractory brick is improved.

The utility model relates to the technical field of submerged arc furnaces, in particular to a furnace bottom masonry structure of a direct current submerged arc furnace and the direct current submerged arc furnace, the furnace bottom masonry structure comprises a plurality of refractory brick layers, and the refractory brick layers are sequentially built from bottom to top along the axial direction of a furnace body of the direct current submerged arc furnace; gaps between the adjacent refractory bricks in each refractory brick layer and gaps between the refractory bricks in the adjacent refractory brick layers are staggered mutually; the other refractory brick layers are sequentially built from bottom to top in the axial direction of the direct current submerged arc furnace and located in an area defined by the inner side wall of the furnace body of the direct current submerged arc furnace and the outer side wall of the graphite electrode, and the height of the upper surface of the graphite electrode is larger than that of the uppermost refractory brick layer. And molten liquid, close to the furnace bottom, in the direct-current submerged arc furnace is separated through the graphite electrode. Therefore, the reliability, the safety and the stability of the furnace bottom are improved.

The kiln shell with the heat insulation structure comprises a shell body, a filling layer and a refractory brick layer, the shell body extends in the front-back direction, and a heating cavity which is through in the front-back direction is formed in the shell body; the filling layer is fixed to the inner surface of the heating cavity and comprises a filling assembly and refractory powder, the filling assembly is fixedly connected to the inner surface of the shell, a filling gap is formed between the filling assembly and the shell, and the refractory powder is arranged in the filling gap to fill the filling gap; the filling assembly is provided with a plugging structure used for sealing the filling gap, and the plugging structure is provided with a feeding port used for feeding. According to the kiln shell with the heat insulation structure, the filling layer is filled with the magnesia powder, so that the impact of materials on the shell in the using process is reduced, meanwhile, the magnesia powder has low heat conductivity, the heat insulation capacity of the heat insulation structure is improved, and the magnesia powder can be rapidly replaced after the fire resistance of the magnesia powder is reduced.

The utility model relates to a novel drying kiln hot-blast stove device, which belongs to the field of hot-blast stoves and comprises a hot-blast stove shell and an external air sleeve fixedly connected to the outer side of the hot-blast stove shell, and a strengthening component for strengthening the stability of the hot-blast stove shell is arranged on the inner side of the hot-blast stove shell. The refractory brick layer and the double-Y-shaped supporting piece are fixedly connected to the inner side of the hot blast stove shell, the surface of the refractory brick layer is coated with the castable, the V-shaped nail anchoring pieces are fixedly connected to the surface of the double-Y-shaped supporting piece, and a moving assembly used for carrying the hot blast stove is arranged at the bottom of the external air sleeve. According to the novel drying kiln hot-blast stove device, the double-Y-shaped supporting pieces are arranged on the inner side of the hot-blast stove shell, all-directional supporting from the bottom to the top is achieved, the structural stability of the hot-blast stove shell is effectively enhanced, potential influences of high temperature and pressure on the hot-blast stove shell can be resisted through the design, and the risks of deformation and damage of the shell are remarkably reduced; and the service life of the hot-blast stove is prolonged.

The utility model relates to an energy-saving blast furnace slag runner utilizing a phase-change material. The slag runner is sequentially provided with a refractory brick layer, a phase-change material layer and a wear-resistant layer from outside to inside, wherein the refractory brick layer is designed to be of a hollow structure, a waste heat recovery water pipe is arranged in the refractory brick layer, and a water inlet and a water outlet of the waste heat recovery water pipe are located outside the slag discharging trough. The phase change material is utilized, the problem that refractory materials are prone to corrosion and abrasion is solved, meanwhile, heat can be absorbed, and energy waste is reduced.

The invention belongs to the technical field of submerged arc furnaces, and discloses a slag grate device for a submerged arc furnace and a preparation method thereof.The outer portion of a slag grate pool is provided with a cuboid steel shell with an opening in the upper portion, a refractory brick layer is laid in the shell, a slag grate pool body formed through casting is arranged on the refractory brick layer, and a molten iron inlet channel is formed in the upper end of an inner cavity of the slag grate pool body; a molten iron outlet channel is arranged at the lower end of the inner cavity of the slag grate tank body; the slag grate is manufactured through the steps of shell welding, anchoring part welding, refractory brick layer laying, formwork erecting, castable preparing, pouring, baking and the like. The castable is prepared from fused mullite, tabular corundum, andalusite, alumina micro powder, silicon carbide, aluminate cement, metal silicon powder, metal aluminum powder, boron carbide, a carbon source, 316L stainless steel fibers and the like. According to the invention, a composite slag grate pool and slag baffle structure is adopted, castable components are optimized, molten iron and slag separation channels are reasonably arranged, molten iron and slag are thoroughly separated, slag is not adhered to the slag baffle, and the service life of the slag grate is prolonged.

The firing kiln comprises a kiln body, a smoke outlet, an air inlet control part, a moving part and a kiln door, a refractory brick layer is arranged in the kiln body, a refractory brick layer is arranged on the inner side of the kiln door, the kiln door and the kiln body are hinged to form a closed firing space, the smoke outlet is formed in the top of the kiln body, and the moving part is arranged on the top of the kiln body. The gas inlet control part is communicated with the firing space and controls the gas flow into the firing space, and the moving part is connected with the inner side and the outer side of the kiln body. The firing temperature and the oxygen content are controlled through the air inlet control part, the yield of heavy reduction firing of the purple sand is further achieved, and the device has the beneficial effects that the yield is high, the quality is reliable, the device is suitable for large-scale industrial production, the reduction degree of raw ore purple sand is high, and the finished purple sand appliance is attractive.

The utility model relates to the technical field of refractory brick stacking, and discloses an automatic batten laying device for refractory brick stacking, which is used for placing batten bodies on the surface of a refractory brick layer and comprises a suction mechanism for transferring the positions of the batten bodies, a pushing mechanism for increasing the height of the batten bodies and a batten box for placing the batten bodies. The suction structure comprises a door-shaped frame, and a guide rail is installed on the door-shaped frame. According to the automatic batten laying device for stacking the refractory bricks, isolation battens are automatically laid in the stacking process of finished refractory bricks, the labor cost in the stacking process is reduced, potential safety hazards in manual batten laying operation are avoided, the device only needs to manually prepare battens offline and replace batten boxes online, and the labor intensity of workers is reduced. The main electric push rod, the auxiliary electric push rod, the main motor and the auxiliary motor are driven respectively, the refractory brick stacking process and the batten laying process can be automatically switched, and manual intervention in a production area is not needed.

The composite fire-resistant protection structure comprises a fire-resistant brick layer and a kiln body outer skin, each fire-resistant brick comprises a fire-resistant brick body, at least two supporting beams arranged at intervals in the front-back direction are integrally arranged on the periphery of each fire-resistant brick body, and the periphery of each supporting beam is of an arc-shaped structure coaxially matched with the inner periphery of the kiln body outer skin. The periphery of the arc-shaped structure is in contact fit with the inner circumferential line of the kiln body outer skin, and a filling space is defined between every two adjacent supporting beams and between the refractory brick body and the kiln body outer skin and filled with a refractory material lining. The corresponding supporting beams of all the refractory bricks of the same refractory brick ring are connected end to end to form a supporting ring for supporting the inner circumference of the kiln body outer skin, and the same refractory brick ring is provided with at least two supporting rings which are arranged in a front-back spaced mode. The technical problem that in the prior art, due to the fact that the supporting force of a refractory material lining on the kiln body outer skin is insufficient, the kiln body outer skin collapses easily is solved.

A moisture-proof structure comprises a first fire brick layer, a second fire brick layer, a third fire brick layer, a fourth fire brick layer, a fifth fire brick layer and a floor / ceramic tile layer arranged from bottom to top. The five fire brick layers are all laid by using stretcher bond, the fourth fire brick layer is laid by using a means of header bond, upper and lower layers of the first fire brick layer, the second fire brick layer, the third fire brick layer, the fourth fire brick layer and the fifth fire brick layer are bonded by using a cement slurry, a gap between fire bricks of the first fire brick layer is filled with lime powder and fire bricks of the fourth fire brick layer and the fifth fire brick layer are closely connected.

The invention provides a low-energy-consumption smelting furnace and a furnace building method thereof, and relates to the technical field of smelting furnaces. The low-energy-consumption smelting furnace comprises a furnace shell, a heat preservation layer, a furnace lining and a furnace bottom; the furnace lining and the furnace bottom are arranged in the furnace shell, the furnace lining comprises a first graphite carbon brick layer and a first refractory brick layer which are sequentially arranged from inside to outside, and a heat preservation layer is arranged between the first refractory brick layer and the furnace shell; the furnace bottom comprises a cold ramming paste layer, a second graphite carbon brick layer and a second refractory brick layer which are sequentially arranged from top to bottom; wherein each surface of the first refractory brick layer and the second refractory brick layer is coated with a high-temperature-resistant heat-insulating coating; the heat preservation layer is of a composite structure composed of a high-temperature-resistant heat insulation coating, a wear-resistant coating and an insulating plate. According to the scheme, the heat insulation, wear resistance and corrosion resistance of the smelting furnace lining can be improved, and then the energy consumption of the smelting furnace is reduced.

A furnace lining structure and repair process for lime shaft kiln gunning repair relates to the technical field of furnace lining repair. It comprises a first anchor, a second anchor, an expansion bolt, a first anchor net, a second anchor net, a plurality of expansion bolts are fixed on the refractory brick layer, the first anchor and the second anchor are fixed on the expansion bolt, the first anchor net is close to the refractory brick layer, the second anchor net is arranged on the inner side of the first anchor net, the first anchor net and the second anchor net are poured with a spraying layer, the double-layer staggered anchor net is arranged on the working layer in the kiln, the anchor is arranged in the staggered position, the stretching limit in the horizontal direction and the vertical direction is carried out, and the wet gunning process can effectively improve the tightness, strength and wear resistance of the lining material, so that the rapid repair of the lining of the lime shaft kiln is realized, and the working life of the lining is prolonged.

The utility model provides an incinerator wall structure, which belongs to the technical field of waste incineration and comprises a refractory layer, a heat insulation layer, a water cooling layer and a heat insulation layer. Wherein the refractory layer is located on the innermost side of the furnace wall, and the heat-insulating layer, the water-cooling layer and the heat-insulating layer are sequentially located on the outer side of the refractory layer; the refractory layer comprises a refractory brick layer, the refractory brick layer is formed by splicing a plurality of refractory bricks end to end, each refractory brick comprises a main body piece and splicing pieces arranged at the two ends of the main body piece respectively, the two splicing pieces are each of an L-shaped structure and are arranged in a central symmetry mode along the axis of the main body piece, and a splicing groove is formed between each splicing piece and the end of the main body piece; one end of one splicing piece on the other refractory brick can be inserted into the splicing groove, and a gap is reserved between the splicing piece and the splicing groove; according to the utility model, the fire-resistant layer on the furnace wall can be prevented from expanding during waste incineration, so that the fire-resistant layer is prevented from cracking and collapsing.

The utility model relates to the technical field of lifting type kiln cars, and discloses a lifting type kiln car which is characterized in that a kiln car platform is fixedly arranged on the upper portion of a refractory brick layer, a surrounding plate is fixedly arranged on the periphery of the bottom of the refractory brick layer, and the height of the surrounding plate is smaller than that of the refractory brick layer; the flange is fixedly arranged on the inner side edge of the periphery of the upper portion of the skirt, the skirt fixedly sleeves the periphery of the steel frame, and the refractory brick layer is fixedly built on the upper portion of the steel frame; the lifting frames are fixedly welded to the bottom of the steel frame and fixedly arranged at the bottom of the steel frame in a bilateral symmetry mode. Rolling wheel sets are fixedly arranged at the front bottom and the rear bottom of each lifting frame. The rocking handle is fixedly arranged at the left end of the rocking rod, and the rocking rod is transversely installed in the middle of the lifting frames which are in bilateral symmetry. The device has the beneficial effects that the heights of all the liftable kiln cars and refractory green bricks in the tunnel kiln are kept consistent, and the problem of temperature difference of local firing temperature caused by inconsistent section heights in the tunnel kiln is effectively prevented.

The application discloses a kind of C-type double hearth kiln inner ring masonry structure's masonry method, it is related to steel manufacturing equipment masonry field, steps include first in double hearth kiln inner ring steel structure bottom masonry ring beam structure, again pad fiber felt on the ring beam structure top, while every interval a distance is built a formwork on inner ring structure, install heat insulation plate along furnace shell direction, and in turn masonry insulating brick, along the direction of inner ring arc length, masonry profiled refractory brick is attached to the formwork two sides in the side of insulating brick, profiled refractory brick upper layer is misaligned and is masonry, the bottom surface groove of upper layer refractory brick is buckled on the top surface convex rib of lower layer refractory brick, the side convex rib of left side refractory brick is inserted into the side groove of right side refractory brick, and a layer of fiber cotton is laid between the formwork and the adjacent refractory brick layer surface layer, compared with prior art, the present masonry method realizes the sealing of brick up and down and left and right, avoids the problem that brick joint becomes larger during expansion, high-temperature airflow from kiln into insulation layer, burns and loses insulation layer.

The utility model provides a high-temperature waste gas heat energy recovery device, and belongs to the technical field of hazardous waste treatment equipment. Comprising a waste gas through-flow outer pipe and a plurality of heated pipes circumferentially and uniformly distributed in the waste gas through-flow outer pipe, the upper end of each heated pipe is connected with a water inlet tank, the lower end of each heated pipe is connected with a water outlet tank, and a refractory brick layer is laid on the inner wall of the waste gas through-flow outer pipe. The device has the advantages of low maintenance cost and the like.

The utility model discloses a combined type heat preservation layer structure for a mesh belt furnace. The mesh belt furnace comprises a furnace body provided with a tunnel type hearth and a conveying mesh belt capable of penetrating through the hearth. A first heat preservation structure is arranged above the hearth in the furnace body, a second heat preservation structure is arranged below the hearth, and third heat preservation structures are arranged on the two side edges of the hearth. The first heat preservation structure comprises heat preservation cotton; the second thermal insulation structure comprises a refractory brick base; the third heat preservation structure comprises three layers of structures which are sequentially arranged from inside to outside; wherein the first layer is a refractory brick layer; the second layer is a high-purity aluminum silicate cotton blanket layer; and the third layer is a hard fiberboard layer. According to the utility model, the composite thermal insulation layer structure is adopted, so that the material and the thickness of the thermal insulation layer can be reasonably arranged according to different requirements of different temperature intervals, the supporting property, the thermal insulation property, the economical efficiency and the service life can be ensured, and the overall light weight, simplicity and reliability can be realized.

This utility model discloses an improved rotary kiln for efficient reduction of iron-containing waste slag. It includes a feed hopper (1), a feed screw conveyor (2), a flue hood (3), a kiln body (4), a kiln body support roller device (5), a kiln body transmission device (6), a kiln body baffle roller device (7), a discharge end sealing cover (8), a kiln inner wall insulation layer (9), a heating spray gun (10), and a discharge screw conveyor (11). Based on the characteristics of the roasting raw materials and the process characteristics of high-temperature reduction roasting, the feed and discharge ends of a conventional rotary kiln are modified to be airtight. During roasting, a sealed space is formed inside the kiln. The kiln body insulation layer is constructed with a spiral-shaped refractory brick layer to increase the reducing concentration inside the kiln and the dispersion of materials during movement, achieving efficient reduction. After the application of this improved rotary kiln, low-cost, high-efficiency reduction roasting is achieved.

The utility model discloses a bearing and moving bottom plate device of an electric annealing furnace, which is provided with a base trolley, the bottom of the base trolley is provided with a traveling wheel mechanism, the traveling wheel mechanism travels along a running track laid in a furnace body of the electric annealing furnace, and two side edges of the bottom of the base trolley are also provided with protective side plates; a reinforced refractory brick layer is laid on the base trolley, and a plurality of transversely arranged steel bar shelves are placed on the reinforced refractory brick layer; the reinforced refractory brick layer comprises positioning clamping bodies arranged at the two ends of the top face of the movable trolley, a refractory brick masonry combination is tightly clamped and laid between the two positioning clamping bodies, and the refractory brick masonry combination is divided into a left side refractory brick set, a right side refractory brick set and a middle extrusion brick set; the refractory brick layer laid on the base trolley is a reinforced refractory brick layer, the refractory bricks on the refractory brick layer are laid from the middle to the two ends in an extrusion mode, all the refractory bricks are connected more tightly and stably, and therefore stable work of the whole refractory brick layer is guaranteed.

The invention belongs to the technical field of coke dry quenching of coking projects, and particularly relates to a coke dry quenching rapid overhaul flashboard device and a using method thereof.The coke dry quenching rapid overhaul flashboard device is characterized by comprising a heat insulation flashboard body, a vertical frame, an electric hoist and an overhaul channel, and the heat insulation flashboard body is hung on the vertical frame through the electric hoist; the electric hoist pulls the heat insulation gate plate body to pass through the maintenance channel to lift and fall; the vertical frame is fixed at the top of the primary dust remover; the maintenance channel comprises a sealing protection cover, a square flange and a sealing cover plate, a refractory brick layer is arranged on the inner side of the sealing protection cover, a hole is formed in the middle of the refractory brick layer, and refractory castable and a refractory fiber felt sealing gasket are lined in the sealing cover plate. Compared with the prior art, the coke dry quenching furnace has the beneficial effects that under the condition that the tube of the coke dry quenching furnace is exploded, coke in the coke dry quenching furnace does not need to be discharged to a low material level, the coke in the coke dry quenching furnace does not need to be completely cooled to be completely extinguished, rapid maintenance can be carried out, and the coke dry quenching furnace is simple in structure and convenient to implement.