33 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 invention relates to an assembly type fused salt storage tank foundation and a construction method thereof. The foundation comprises a gravel layer, a ceramsite soil filling layer, a composite heat preservation layer, a leakproof steel plate assembly, a quartz sand cushion layer and a heat-resistant concrete ring wall surrounding the gravel layer, the ceramsite soil filling layer, the composite heat preservation layer, the leakproof steel plate assembly and the quartz sand cushion layer from bottom to top in sequence. Wherein the heat-resistant concrete ring wall is formed by splicing a plurality of prefabricated modules and is arranged on the gravel layer; a temperature measuring thermocouple assembly is further arranged in the leakage-proof steel plate assembly and used for detecting temperature changes. A steel fiber concrete layer and a refractory brick layer are sequentially arranged above the anti-leakage steel plate assembly and correspond to the lower portion of the molten salt storage tank wall plate. According to the heat-resistant concrete ring wall, the adopted prefabricated modules are rapid in installation and short in maintenance period, so that the construction period is short, the construction efficiency is greatly improved, the leakage detection system is arranged, leakage can be found in time, the accident treatment cost is effectively reduced, and the annual maintenance cost is reduced by 20-30%; therefore, the installation cost and the maintenance cost are greatly 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 present invention develops a method for building a fuming furnace. By setting the refractory brick layer as the bottom refractory brick layer and the top refractory brick layer, and laying the top refractory brick layer with snap-in refractory bricks, the tightness of the combination of refractory bricks can be effectively improved. When a water leakage accident occurs inside the fuming furnace or slag runs out through the furnace seam and needs to be condensed with water, the erosion of water on the refractory brick layer can be effectively reduced, which has a significant effect on improving the service life of the fuming furnace and can reach 4,500 to 5,000 furnaces.

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 invention discloses a flue connecting structure of a side-blown furnace and a waste heat boiler, a flue opening of the waste heat boiler is located above a flue opening of the side-blown furnace, a first flexible heat preservation material layer is arranged between the flue opening of the waste heat boiler and the flue opening of the side-blown furnace to serve as a first-stage sealing fire insulation structure, and the setting thickness of the first flexible heat preservation material layer is not smaller than 200 mm; a refractory brick layer is arranged on the outer side of the first flexible heat preservation material layer to serve as a second-stage sealing fire insulation structure, the refractory brick layer is arranged in the circumferential direction of the top of the flue opening of the side-blown boiler, the lower portion of the flue opening of the waste heat boiler is located in the space defined by the refractory brick layer, and the top of the refractory brick layer is at least 100 mm higher than the top of a lower collecting box of the waste heat boiler. And the refractory brick layer and the membrane wall at the top of the lower collecting box are sealed through a second flexible heat preservation material layer to form a third-stage sealing fire insulation structure. According to the flue connecting structure of the side blowing furnace and the waste heat boiler, the technical problem that in the prior art, a metal expansion joint is prone to damage, and consequently flue gas leaks is solved.

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 discloses a multi-stage treatment layered dewatering and drying incinerator which comprises an incinerator body, the incinerator body comprises a refractory brick layer, and an air supply and outlet wall is formed in the middle of the incinerator body. The furnace body is sequentially provided with a heating rapid dehydration area, a high-temperature drying area, a bottom oxygen carbonization area and a high-temperature combustion area from top to bottom; first cavities are formed in the positions, corresponding to the high-temperature combustion area, of the furnace body and the air supply and outlet wall, the first cavities communicate with air supply pipelines, and a plurality of air supply holes communicating the first cavities with the interior of the furnace body are formed in the furnace body and the air supply and outlet wall. According to the utility model, the garbage is preheated and dehumidified, so that the garbage can be carbonized to form combustible gas in subsequent carbonization, and residual materials can be completely combusted in a high-temperature combustion area.

A thermal energy storage system includes a firebrick checkerwork and an electrode. The firebrick checkerwork includes one or more conductive firebrick layers, each including a plurality of electrically conductive doped metal oxide firebricks with one or more airflow vents. The electrode includes one or more electrode firebrick layers, each layer including a plurality of electrode firebricks. The firebrick checkerwork is heated due to application of electrical power to the electrode. Air flowing through the firebrick checkerwork may then be heated for use in heat-related applications (e.g., an industrial application, commercial application, residential application, transportation application, etc.) some of which may relate to electricity production or in other applications which may relate to other purposes that require heat that are unrelated to electricity production.

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 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 thermal energy storage system includes a firebrick checkerwork and an electrode. The firebrick checkerwork includes one or more conductive firebrick layers, each including a plurality of electrically conductive doped metal oxide firebricks with one or more airflow vents. The electrode includes one or more electrode firebrick layers, each layer including a plurality of electrode firebricks. The firebrick checkerwork is heated due to application of electrical power to the electrode. Air flowing through the firebrick checkerwork may then be heated for use in heat-related applications (e.g., an industrial application, commercial application, residential application, transportation application, etc.) some of which may relate to electricity production or in other applications which may relate to other purposes that require heat that are unrelated to electricity production.

The present invention provides a high-temperature molten salt storage tank foundation structure and a construction method, including pile foundations. A reinforced concrete layer is cast on the pile foundations. A ventilation pipe is fixedly arranged inside the reinforcing pipe sleeve. A gravel layer and a ceramsite layer are sequentially arranged from bottom to top in the gap between the longitudinal refractory brick layers. A transverse refractory brick layer is arranged at the top of the longitudinal refractory brick layer and the ceramsite layer. A molten salt storage tank bottom plate is arranged at the top of the transverse refractory brick layer. One end of the ventilation pipe is provided with a gas guiding member, and a first joint, a second joint and a third joint are respectively communicated and arranged at the bottom of the gas guiding member. The present invention provides a high-temperature molten salt storage tank foundation structure and a construction method, with stable structure. Multiple support structures are arranged for the ventilation pipe itself and its interior, making the ventilation pipe not easily deformed. Moreover, the ventilation and cooling structure is improved, making the heat dissipation more uniform and avoiding the problem of uneven settlement caused by local overheating.

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 present invention discloses a hood-type step-type trolley, a refractory material arrangement structure and a masonry method thereof. The refractory material arrangement structure includes a thermal insulation layer, an expansion sealing ring, a castable periphery, a lower support brick group, a castable inner structure, a peripheral refractory brick layer, an upper load-bearing brick group, and a sealing sand layer. The expansion sealing ring is fixedly mounted on the thermal insulation layer. The castable periphery surrounds the expansion sealing ring periphery. The lower support brick group is built inside the expansion sealing ring. The lower support brick group is spaced apart from the inner circumference of the expansion sealing ring. The castable inner structure includes a main body and a peripheral edge at the outer periphery of its bottom end. The main body covers the lower support brick group. The peripheral edge is filled in the lower end of the gap. The upper end of the gap forms a sand trough. The peripheral refractory brick layer is built on the upper part of the castable periphery. The upper load-bearing brick group is built on top of the lower support brick group. The sealing sand layer is filled in the sand trough. The refractory material arrangement structure of the present invention is rationally arranged according to the heat conduction and load-bearing parts, thereby improving the service life of the refractory materials.

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 provides a refractory lining combined structure of a manganese-silicon submerged arc furnace. The structure comprises a furnace bottom and a furnace hearth, an annular large carbon brick layer is laid on the inner wall of the furnace hearth, an impermeable layer is arranged between the furnace hearth and the annular large carbon brick layer, and lower-layer carbon bricks, middle-layer carbon bricks, upper-layer carbon bricks and a protective layer are sequentially laid on a refractory brick layer of the furnace bottom from bottom to top. The lower-layer carbon bricks, the middle-layer carbon bricks and the upper-layer carbon bricks are all formed by laying carbon bricks with grooves in the periphery in a wide-gap filler laying mode, the lower-layer carbon bricks are located between the annular large carbon brick layer and the refractory brick layer of the furnace bottom, and a compensation layer is arranged between every two adjacent layers of carbon bricks. And an elastic layer is arranged between the hearth and the external heat insulation layer. According to the utility model, the shrinkage generated after the wide-gap filler encounters a coking point in the preheating and roasting processes of the furnace lining can be compensated, and gaps caused by the shrinkage can be filled, so that the integrity of the furnace bottom of the submerged arc furnace is improved, and the expansion caused by heating of the refractory material of the furnace lining can be absorbed.

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.