59 results about "Clay brick" patented technology

The invention relates to the technical field of building lime materials, and particularly discloses a lime material doped with aerated concrete waste and a preparation method of the lime material. The invention relates to a lime material doped with aerated concrete waste. The lime material is prepared from the following raw materials: quick lime, composite regenerated powder, metakaolin, a lithium-based composite activator, modified nano-zinc oxide, semi-hydrated gypsum, hydroxypropyl methyl cellulose ether and sodium carboxymethyl starch, the composite regenerated powder is obtained by activating aerated concrete waste and waste clay brick powder through an acetic acid solution and composite alkali liquor; the modified nano-zinc oxide is obtained by modifying nano-zinc oxide with a silane coupling agent and trehalose. The lime material provided by the invention can effectively digest and utilize the aerated concrete waste and the waste clay brick powder; in addition, through collaborative innovation of a composite additive system, the coagulation strength and water resistance of the lime material are effectively improved.

The utility model discloses a high-altitude melting furnace, which relates to the technical field of glass production, the high-altitude melting furnace is used for high-altitude glass production, the high-altitude melting furnace comprises a melting part, a clarifying part and a forming part, the melting part is used for melting glass raw materials into glass liquid; the clarification part is connected to the melting part and is provided with a clarification runner, the clarification runner is used for clarifying molten glass, and the tank wall of the clarification part is respectively provided with an electric smelting zirconia corundum brick, a clay brick and an asbestos-free calcium silicate board from one end close to the clarification runner to one end far away from the clarification runner; the forming part is connected to the clarifying part and is provided with a forming runner, the forming runner is used for converting liquid glass liquid into plastic glass liquid, a neck is arranged between the forming part and the clarifying part, and the neck is provided with a neck water bag which can be inserted into the glass liquid and is adjustable in depth. The technical scheme provided by the utility model aims to improve the glass production qualification rate and quality of the melting furnace in high-altitude areas.

This invention discloses a method for restoring the appearance of exposed brick walls in historical buildings. The method includes the following steps: S1. Making new clay bricks according to the specifications of the old bricks in the exposed brick wall; S2. Determining the location of the new clay bricks and determining the exposed surfaces of the corresponding new clay bricks based on the location; S3. Sealing all six sides of the new clay bricks; S4. Preparing a colorant and applying it to the new clay bricks so that the color of the new clay bricks matches the color of the old bricks, and recording the ratio for later use; S5. Laying or cutting and pasting new clay bricks in the area of ​​the exposed brick wall to be repaired until the repair is complete, and then cleaning the surface of any contaminated mortar and bonding mortar; S6. Preparing the colorant according to the ratio obtained in step S4, and spraying or brushing the color onto all the new clay bricks that need color matching; S7. After the colorant dries, confirming that the overall color appearance is correct, and the repair is complete. This invention solves the problem of procuring old bricks and reduces the cost of unnecessary color matching processes, while improving the aesthetics.

The present application relates to the field of concrete technology, and specifically discloses a solid waste concrete and a preparation method thereof. The mixture of the solid waste concrete includes the following components in parts by weight: 300-320 parts of cement, 80-100 parts of solid waste mineral admixture, 1150-1250 parts of coarse aggregate, 580-620 parts of iron-loaded machine-made sand, 200-240 parts of modified mineral wool fiber, 156-160 parts of water, and 3.8-4.2 parts of polycarboxylate water reducer. The present application uses modified mineral wool fiber and loads iron sulfate in clay brick machine-made sand to obtain iron-loaded machine-made sand, so that the water-reducing effect of the polycarboxylate water reducer can be more fully exerted, and the water absorption rate of the machine-made sand is reduced, so that the slurry of the concrete mixture has better fluidity, which is beneficial to the construction of the concrete mixture.

1. Name of the designed product: clay brick. 2. Use of the designed product: used as building material. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The utility model relates to the technical field of clay bricks, and discloses a high-strength clay brick which comprises a brick body, the brick body comprises a clay brick, three first through holes are horizontally formed between the front side wall and the rear side wall of the center of the clay brick at equal intervals, and a second through hole is formed between the front side wall and the rear side wall of the middle of each of the two ends of the clay brick. Three third through holes are horizontally formed in the middle of each of the upper end and the lower end of the clay brick at equal intervals, and fourth through holes are formed between the front side wall and the rear side wall of the four corners of the clay brick. By adopting the optimized brick body structural design and improving the shape, the size and the internal structure of the brick, the weight of the brick is reduced on the premise of ensuring the strength, namely, by adopting the porous structure design, the weight can be reduced, and the heat preservation and heat insulation performance can be improved.

The utility model discloses a high-strength clay brick which comprises a compact clay brick body insertion strip, a bottom groove is formed in the bottom face of the compact clay brick body, a protrusion is arranged on the top face of the compact clay brick body, the thickness of the protrusion is not larger than 5 cm, and the insertion strip comprises a web, a first insertion end and a second insertion end. The compact clay brick has the advantages that the protrusions and the bottom grooves are adopted, a worker can place the protrusions upwards during masonry, the worker can hold the protrusions by hand and align the bottom grooves to the protrusions of the compact clay brick body below to conduct piling when upward masonry is needed, the anti-sliding capacity in the front-back direction is improved through inserting connection of the bottom grooves and the protrusions, and the compact clay brick is convenient to use. Meanwhile, positioning and placing are facilitated, the masonry strength is improved, meanwhile, the thickness of the protrusions is not larger than 5 cm, a worker can conveniently hold by one hand, compared with a traditional clay brick, operation is more convenient, the bottom grooves and the protrusions are each of a long-strip-shaped structure, and compared with a cylindrical structure, alignment and splicing are more convenient.

The utility model provides a kind of submerged entry nozzle electric heating baking device, including hearth shell, the wall of hearth shell includes nanometer microporous heat insulation plate layer, light clay brick layer and high-alumina refractory brick layer in turn from outside to inside, hearth shell is equipped with one or more heat-resistant partition, for the inner cavity of hearth shell is divided into multiple baking chambers, each baking chamber is used to install submerged entry nozzle, each baking chamber is evenly arranged with multiple silicon carbide heating rods around the periphery of submerged entry nozzle, the cold end of each silicon carbide heating rod is passed through hearth shell and is connected with power supply, hearth shell is equipped with insulating sealing sleeve pipe at the wall penetration position of each silicon carbide heating rod. It can meet the high-temperature preheating demand of submerged entry nozzle, and multiple submerged entry nozzles can be simultaneously and evenly electrically heated and radiantly baked, the temperature field distribution of submerged entry nozzle is uniform, local stress concentration problem is not prone to occur, and the heat insulation effect of hearth shell is good, heat loss is small, and energy utilization rate is high.

This invention relates to the technical field of energy-saving building equipment, and discloses an energy-saving building material production mold and its application process. In order to solve the problems of low efficiency in the manufacturing process of building materials and the difficulty in demolding the molded material, multiple molding cavities are set on the lower mold to ensure that multiple clay bricks mixed with waste materials can be manufactured at the same time when the mold is closed. Moreover, during the mold closing process, the support frame compresses and stores pressure on the demolding spring. When the mold is opened, the elastic force of the demolding spring pushes the pressure head and ejects the finished product in the molding cavity, ultimately achieving the effect of rapid demolding.

This invention provides a method for stabilizing beryllium in lepidolite leaching residue, belonging to the field of lepidolite residue treatment technology. The method comprises the following steps: mixing lepidolite leaching residue with clay powder in a specific ratio, adding water, and pressing the mixture into bricks; firing the bricks in a muffle furnace; and then crushing, grinding, and testing the leaching toxicity of the fired clay bricks. This invention directly uses lepidolite leaching residue as raw material to prepare waste residue that can be safely discharged. It has low production costs, not only achieving resource recycling but also effectively stabilizing the excessive beryllium leaching toxicity in the residue. Furthermore, the resulting clay bricks can possess other excellent properties, meeting industry standards for waste residue discharge.

The application relates to the technical field of clay bricks, and discloses a dense clay brick and a preparation method thereof. The dense clay brick comprises 100 parts by weight of soft clay, 25-40 parts by weight of red mud, 20-32 parts by weight of fly ash, 4-8 parts by weight of a sulphurous acid paper pulp waste liquid binder and 0.1-0.6 parts by weight of modified carbon fibers. The surface of the modified carbon fibers contains a large number of double quaternary ammonium salt cation structures, can have electrostatic interaction with anions on the surface of the clay, enhances the interfacial bonding performance between the carbon fibers and the clay, makes the inside of the clay brick more compact, improves the bulk density and compactness of the clay brick, is beneficial to reducing the water absorption rate and improving the water resistance and waterproof performance. Moreover, the carbon fibers have large strength, high modulus and strong compression resistance, the interfacial bonding performance between the modified carbon fibers and the clay is better, and the compression strength and the bending strength of the clay brick are improved.

The invention relates to the technical field of submerged arc furnaces, in particular to a direct-current submerged arc furnace bottom temperature control system which comprises a furnace shell, and an insulating asbestos board, a high-aluminum aggregate layer, a third-level high-aluminum brick layer, a first-level high-aluminum brick layer, a prebaked carbon brick layer and a clay brick layer are sequentially laid at the inner bottom of the furnace shell from bottom to top. A dry-type sealing ramming material layer is arranged on the inner side of the insulating asbestos plate on the side wall of the furnace shell, a cooling assembly is arranged in the third-stage high-alumina brick layer and comprises an air blower and a plurality of air inlet pipes, air outlet pipes and air conveying pipes, the air outlet pipes are arranged in the third-stage high-alumina brick layer, one ends of the air inlet pipes are inserted into the air outlet pipes and extend to the inner bottoms of the air outlet pipes, and the other ends of the air inlet pipes are connected with the air blower. According to the furnace bottom cooling device, cooling of the furnace bottom of the submerged arc furnace is achieved, the situation that the furnace bottom is heated and cooled rapidly, consequently, prebaked carbon bricks at the furnace bottom warp and the furnace bottom brick floating accidents are caused is avoided, the service life of the submerged arc furnace is prolonged, and the service life of the submerged arc furnace is prolonged. And wide application prospects are achieved in the technical field of submerged arc furnaces.

The utility model relates to the technical field of heat treatment, and discloses a sintering furnace of high-strength clay bricks for lime kilns, which comprises a shell, a connecting rod is fixedly connected to one side of the outer wall of the shell, a furnace door is rotatably connected to the outer wall of the connecting rod, a handle is fixedly connected to one side of the outer wall of the furnace door, and a bearing table is attached to one side of the inner wall of the shell. A supporting plate is fixedly connected to the lower surface of the bearing table, pulleys are fixedly connected to the lower surface of the supporting plate, a connecting block is fixedly connected to one side of the outer wall of the supporting plate, and a pull rod is rotationally connected to the outer wall of the connecting block. According to the sintering furnace, the fan is started, meanwhile, ventilation airflow is formed in the furnace through the ventilation pipeline and the connecting pipe, so that the effect of discharging waste gas, water vapor and the like generated in the sintering process out of the furnace is achieved, and at the moment, part of impurities and dust in the furnace are filtered out through the filter screen connected to the interior of the shell; therefore, the effect that clean gas enters the ventilation pipeline is achieved.

The invention discloses an attractive surface coating process for bricks. The process comprises the following steps: preparing a to-be-treated brick body (clay bricks, cement bricks, porous bricks and the like can be selected, and the style can be customized to be special-shaped, with embossment textures and the like); the surface of the brick body is coated with a glue layer with the thickness not smaller than 0.2 mm (glue can be selected from environment-friendly water-based glue or strong building glue), the suggested thickness is not larger than 0.5 mm when the cost is controlled, and the thickness can be increased according to needs without an upper limit when high durability is pursued; a paint layer with the thickness of not less than 0.1 mm is sprayed on the surface of the glue layer at the spraying pressure of 0.3-0.6 MPa to form a paint spraying surface (the paint can be selected from matte paint, gloss paint, metallic paint, art paint and the like, and the color and the type can be customized), the suggested thickness does not exceed 0.3 mm when the cost is controlled, and the thickness can be increased as required without an upper limit when high durability is pursued.

The present application relates to iron-making technology field, propose a kind of for vanadium-titanium magnetite smelting blast furnace hearth structure and cooling control method, the blast furnace structure includes furnace bottom brick lining, hearth side wall brick lining and be located in the hearth side wall brick lining below furnace base;Furnace bottom brick lining and the outside of the hearth side wall brick lining is provided with smooth cast iron cooling wall, the inside of the furnace base is provided with cooling device;The furnace bottom brick lining is successively provided with heat preservation brick layer and heat-conducting brick layer from hearth bottom to furnace base direction, heat preservation brick layer includes dense clay brick and composite mullite brick, the heat-conducting brick layer is semi-graphite carbon brick;Hearth side wall brick lining is built with the composite mullite brick, and in the corner of hearth and furnace bottom, hearth side wall brick lining extends to form brick lining reinforcing structure in the direction of furnace in.The present application solves the problem of excessive deposition of titanium carbonitride caused by improper temperature gradient when smelting vanadium-titanium magnetite, inhibits the accumulation of hearth center and edge bonding, maintains the hearth active and blast furnace smooth.

The utility model discloses a clay brick forming die, including bottom plate and locking mechanism, the top of bottom plate is installed with short forming frame, and the inner wall bottom end both sides of bottom plate all install fixed link, the outer wall of short forming frame is installed with hinge, and the other end of hinge installs long forming frame, the locking mechanism sets up at the surface one end of long forming frame, the locking mechanism includes locking plate, spacing rod, lock pin and lock catch. This kind of clay brick forming die, through the short forming frame, long forming frame and locking mechanism who sets up, compared with traditional forming die, the long forming frame of this die and short forming frame are connected through the hinge, and the opening and closing of the frame are controlled through the lock pin and lock catch in locking mechanism, and the forming die is formed by a pair of short forming frame and a pair of long forming frame, and the clay in the interior is conveniently formed, and the forming die is simple in structure, and small in size, light in weight, convenient to carry and transport.

A pore-forming microsphere homogenizing device and method include steps of: firstly homogenizing the pore-forming microspheres made of the cow dung into the clay paste; secondly homogenizing the materials by using the kneading gear and the ejection cylinder rotating in opposite directions for kneading the clay paste while ejecting the pore-forming microspheres; and thirdly homogenizing the materials by using the telescopic kneading part and the ejection cylinder together for further kneading the clay paste while ejecting the pore-forming microspheres. With the foregoing processes, uniform and complete closed pores are uniformly distributed in the clay bricks, so that the strength of the clay bricks remains unchanged while clay usage is reduced.

The invention discloses a low-porosity, low-iron and low-creep clay brick and a preparation method thereof, and relates to the technical field of refractory materials, and the low-porosity, low-iron and low-creep clay brick comprises the following components in parts by weight: 30-45 parts of a mullite homogenized material, 12-20 parts of Anhui flint clay, 8-10 parts of sillimanite, 15-25 parts of kaolin, 10-20 parts of andalusite powder, 3-5 parts of raw silicon powder, 2-5 parts of potassium feldspar powder and 0.2-0.5 part of hydroxypropyl methyl cellulose. And 3-6 parts of an aluminum dihydrogen phosphate solution. The high-quality clay brick with low porosity, low iron, low creep deformation and high strength is successfully prepared by optimizing the raw material ratio and a composite binding agent system, and the high-quality clay brick is suitable for high-temperature industrial kilns with harsh performance requirements.

The utility model belongs to the technical field of glass kilns, and particularly relates to a feeding port sealing structure for a large-scale glass kiln in the kiln heating period, which comprises a main frame body, annular clay bricks are fixedly embedded in the main frame body, the bottom of the main frame body is fixedly connected with a plurality of supporting blocks which are symmetrically arranged, and screw rods are rotatably inserted on the supporting blocks. A rotary knob is fixedly connected to one end of the screw rod, an arc-shaped clamping rod is rotationally connected to the supporting block through a rotating shaft, a plurality of clamping grooves corresponding to the arc-shaped clamping rod are formed in the rotary knob in a surrounding mode, the end, away from the rotary knob, of the screw rod is sleeved with a transmission sleeve in a threaded mode, and a pressing plate is fixedly connected to the end, away from the screw rod, of the transmission sleeve. Through the arrangement of the installation mechanism and the reinforcing structure, the supporting strength and the installation convenience of the sealing structure can be effectively improved, and therefore the installation efficiency of the feeding port sealing structure is effectively improved.

The present invention relates to the technical field of refractory materials, and provides a tundish thermal insulation refractory material, which comprises the following raw materials by weight: 5-40 parts of alumina hollow spheres, 5-40 parts of hollow ceramsite, 5-30 parts of waste clay bricks, 10-20 parts of flint clay powder, 1-5 parts of refractory clay, 5-20 parts of andalusite powder, 5-20 parts of refractory cement, 0.1-0.5 part of a water reducing agent, 0.1-0.5 part of melamine, 0.5-1 part of alum, and 0.2-0.3 part of benzamidoxime. Through the technical scheme, the problem of insufficient strength of the refractory material for heat preservation of the tundish in related technologies is solved.

The present application relates to hot blast stove structure technical field, mainly disclose an optimized blast furnace hot blast stove bottom structure and construction method, blast furnace hot blast stove bottom structure includes furnace shell, apron, furnace column and profiled steel, the bottom plate of furnace shell is above the outside of the outermost circle furnace column and is arranged along the center circumference of furnace shell with steel support formwork, the outer wall of steel support formwork is filled with refractory pouring material between the inner wall of furnace shell, and is arranged with reinforcing steel bar inside refractory pouring material, the inner wall of steel support formform is filled with spray material to the center of furnace shell, the inner wall of furnace shell is sequentially provided with fibre felt and big wall brick, the refractory pouring material and spray material above the inside of big wall brick to the center of furnace shell is sequentially arranged with clay cement mortar and low creep clay brick, the material usage is effectively reduced by the above blast furnace hot blast stove bottom structure and its construction method, and the construction period is shortened, the investment cost of hot blast stove bottom position is reduced, and the original stability of structure is ensured.

The utility model relates to the field of fire-resistant composite clay bricks, and provides a fire-resistant composite clay brick structure for a heating furnace, which comprises a brick body, the first fixing plate is fixedly arranged on one side of the brick body, and a notch is formed in one side of the first fixing plate. When the brick is used, the multiple protrusions on one brick body are inserted into the multiple arc-shaped grooves in the other brick body, stacking together is convenient, and using is convenient; the positioning plate on one brick body is inserted into the first fixing plate on the other brick body, the multiple brick bodies are further connected together in the left-right direction, the second fixing plate is inserted into the hollow plate, the two square columns are further inserted into the two grooves, and the multiple brick bodies are connected together in the up-down direction; when the refractory composite clay brick is used, the brick body is easier to align and fix during installation, the stability of the whole structure is ensured, and the working efficiency is improved.

The present application relates to a coke oven top waste heat recovery system, comprising an upcomer heat exchanger arranged at the coke oven top, the upcomer heat exchanger having a heat exchange flow channel for passing raw coke oven gas; a top heat exchange pipe arranged at the position of clay brick layer or the position of heat insulation brick layer or between the two positions; the upcomer heat exchanger and the top heat exchange pipe are connected together in parallel, in series or in a combination of series and parallel. The coke oven top waste heat recovery system removes part of heat through the top heat exchange pipe, and the heat transferred from the heat insulation brick to the surface of the coke oven top is reduced, so that the heat loss of the coke oven is reduced, and the temperature of the top operating surface is reduced. On the other hand, the top heat exchange pipe is connected with the upcomer heat exchanger in parallel or in series, and the heat exchange medium (desalted water) is partially vaporized by absorbing heat in the top heat exchange pipe, so that the steam generation is increased, the heat loss of the top of the coke oven can be reduced by 60%, and the total steam production can be increased by 30% compared with the upcomer heat exchanger alone.

The utility model discloses a kind of special-shaped clay bricks for baking furnace flue wall, belong to clay brick technical field, including bottom right-angle brick, several intermediate right-angle bricks and top right-angle brick sequentially inserted and arranged from bottom to top, and the side wall of bottom right-angle brick, intermediate right-angle brick and top right-angle brick are all inserted with horizontal brick;Intermediate right-angle brick includes intermediate brick body, and the upper end of intermediate brick body is integrally formed with L-shaped groove, and the lower end of intermediate brick body is integrally formed with L-shaped block;Top right-angle brick includes top brick body, and the bottom of top brick body is integrally formed with top L-shaped block matched with L-shaped groove;Bottom right-angle brick includes bottom brick body, and the top of bottom brick body is integrally formed with bottom L-shaped groove matched with L-shaped block.The utility model special-shaped clay bricks for baking furnace flue wall solve the masonry problem at 90 ° right-angle turning place of wall body, improve the sealing of wall body, structural stability and service life.

The application discloses a kind of mortar based on solid waste base material and preparation method thereof, belong to building material technical field.The mortar includes cement 315~360 parts by weight, metakaolin 13.5~22.5 parts, waste clay brick powder 45~58.5 parts, limestone powder 13.5~27 parts, carbide slag 9~13.5 parts, quicklime 9~13.5 parts, standard sand 1350 parts, water 225 parts, nano C-S-H seed crystal 5.4~10.8 parts and alkanolamine 0.09~0.225 parts.The preparation of nano C-S-H in the application uses bagasse ash and carbide slag, realizes resource utilization;The solid waste base material particles used not only fill each other, but also produce chemical synergies to promote the formation of more hydration products, improve the performance of mortar;The selected additive has synergistic effect in promoting hydration, further improves the performance of mortar;Preparation process uses a variety of solid waste base materials, improves resource utilization rate.

The present application relates to clay brick production technical field, specifically for a kind of industrial sludge-based full solid waste water-permeable brick production device and production method thereof, device includes sieve cylinder, material blocking ring and torsion wing plate, sieve cylinder axis is horizontal and sieve cylinder can rotate around its axis, the circumferential of sieve cylinder is provided with several sieve holes, material blocking ring is coaxial with sieve cylinder and is arranged at one end of sieve cylinder.The present application is provided with torsion wing plate, when sieve cylinder rotates to torsion wing plate is inclined downward, this part of material will fall along the side surface of torsion wing plate, when this part of material falls to the lower part of sieve cylinder, the gravitational potential energy of this part of material is converted into kinetic energy, sieve cylinder is vibrated under stress, to make the plug in sieve hole to separate, realize intelligent deblocking, to prevent converter steel slag from plugging sieve hole, avoid sieve efficiency reduction due to sieve hole plugging.

The utility model relates to the field of clay bricks, and provides a low-porosity high-thermal-shock clay brick for a hot blast stove, which comprises a brick body, the notch is formed in one side of the brick body, and two protruding blocks are fixedly arranged on the inner wall of the notch. When the brick is used, the bottom plate on one brick body is inserted into the notch in the other brick body, the two protruding blocks are further inserted into the two limiting grooves, the two brick bodies are connected together in the vertical direction, and therefore the brick is convenient to use; when the clay brick is used, a transverse plate is pulled to drive a square column to slide on the inner wall of a sliding groove, at the moment, a first fixing block on one brick body is inserted into a positioning groove in the other brick body, then the transverse plate is pushed to enable the square column to be inserted into a square groove, then the two brick bodies are connected together in the left-right direction, the two brick bodies are further connected together, and therefore when the clay brick is used, the operation is convenient. Two clay bricks can be connected together, so that the construction of the clay bricks is facilitated, and the practicability of the clay bricks is improved.

The application discloses a uniform mixing device and method of pore-forming microspheres, which is characterized in that: firstly, the device is used for uniformly mixing the pore-forming microspheres made of cow dung into clay mud paste; secondly, the device is used for uniformly mixing the pore-forming microspheres into the clay mud paste by kneading the clay mud paste and spraying the pore-forming microspheres through the forward and reverse rotating kneading gear and the spraying barrel; thirdly, the device is used for further uniformly mixing the pore-forming microspheres into the clay mud paste by kneading the clay mud paste and spraying the pore-forming microspheres through the stretching and contracting engaging part and the spraying barrel, so that the closed pores are uniformly distributed in the clay bricks, the strength of the clay bricks is unchanged, and the clay consumption is reduced.

The invention discloses a method for baking an Anshan type magnetizing roasting shaft furnace. The method is suitable for baking operation of the magnetizing roasting shaft furnace after major repair or medium repair. In the roasting process, a 480-hour furnace baking curve is selected, roasted ore and raw ore raw materials are mixed and loaded in a lower-layer combustion chamber, ignition furnace baking is carried out, the temperature in the furnace rises in a stepped mode, normal furnace baking is about to be finished, a reduction chamber is started to form a reduction zone, and transition from the furnace baking curve to a normal curve is achieved. In the furnace baking process, roasted ore and raw ore are mixed in the lower-layer combustion chamber according to the ratio of 1: 2, and impact on refractory materials is reduced; ignition adopts a diagonal crossing mode to ensure that the furnace temperature rises uniformly. And through stepped temperature control, moisture of brick bodies and mortar is slowly discharged, so that the mortar and the clay bricks are sintered into a whole, and deformation or cracking of a furnace body is avoided. The problems that a traditional oven is uneven in temperature and not thorough in water discharge are solved, and the service life of the shaft furnace is remarkably prolonged.

The application relates to the technical field of refractory materials, and discloses a kind of intermediate ladle heat preservation refractory materials, including the following weight parts component raw materials: alumina hollow ball 5~40 parts, hollow ceramic 5~40 parts, waste clay brick 5~30 parts, coke spar powder 10~20 parts, refractory clay 1~5 parts, andalusite powder 5~20 parts, refractory cement 5~20 parts, water reducing agent 0.1~0.5 parts, melamine 0.1~0.5 parts, alum 0.5~1 part, benzamide oxime 0.2~0.3 parts.Through the above technical scheme, the problem of insufficient strength of the intermediate ladle heat preservation refractory material in the related art is solved.