14 results about "Firebrick layer" patented technology

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 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 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.

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.

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 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.