165 results about "Grog" patented technology

The invention discloses a method for preparing a low-clinker composite mortar material from granite weathered construction engineering residue soil and mortar. The method comprises the following steps: settling and screening engineering residue soil, and respectively carrying out biomimetic mineralization modification, particle size allocation and proportioning on powdery clayey soil and coarse particles to form mixed mortar; according to the mixed mortar, granite weathering type constructional engineering muck solid waste can be fully utilized, the recycling rate reaches 96%, the performance of the mortar is improved by introducing a biomimetic mineralization modification technology, conditions are mild, no harmful by-products exist, and the mechanical performance of the composite mortar is excellent. Through a biomimetic mineralization modification technology, after the prepared mortar is cured for 28 days, the highest compressive strength can reach 65.45 MPa, and the compressive strength is superior to that of traditional OPC mortar, fly ash composite mortar and untreated muck mortar.

The invention discloses a spodumene concentrate resourceful treatment method which comprises the following steps: carrying out wet treatment on spodumene acid clinker to prepare lithium-removed filter residues and leachate; carrying out neutralization treatment and desulfurization treatment on the leachate to obtain a lithium-containing purified solution, gypsum and iron oxide red, and carrying out lithium extraction treatment on the lithium-containing purified solution to obtain a lithium salt and mirabilite; the lithium-removed filter residues are treated through a process combining a beneficiation method and a chemical method, and water glass, nano kaolinite, ceramsite aggregate and tantalum-niobium concentrate are obtained. According to the method, whole-process slag-free production of the spodumene concentrate is achieved, and meanwhile the lithium-containing compound with the high purity and the high quality is obtained; and various valuable products can be obtained.

The invention discloses a preparation method of lightweight micro-expansion ceramsite. The lightweight micro-expansion ceramsite is prepared from the following raw materials: 30-90 parts of lightweight clay clinker powder, 5-50 parts of quartz tailing powder, 1-10 parts of an expanding agent, 5-15 parts of a binding agent and 0-10 parts of a reinforcing agent. The preparation method comprises the following steps: uniformly mixing the light clay clinker powder, the quartz tailing powder, the expanding agent, the binding agent and the reinforcing agent in a double-shaft stirrer, and then adding the mixture into a pelletizing disc for pelletizing or adding the mixture into an extruder for extruding and pelletizing. The mass of the used water is 15-30% of the mass of the whole solid material. And putting the ceramsite blank granulated in the step into a curing kiln for curing or naturally curing for more than or equal to 8 hours. And carrying out heat treatment on the ceramsite cured in the previous step at the treatment temperature of normal temperature to 700 DEG C to ensure that the water content is less than 1.5%, thereby obtaining the light micro-expansion ceramsite. The lightweight micro-expansion ceramsite prepared by the invention has excellent micro-expansion characteristic at high temperature, has the characteristics of heat insulation, heat preservation, low preparation cost by utilizing industrial solid waste and the like, and is a preferred raw material for preparing lightweight heat-insulation castable or lightweight heat-insulation bricks.

The invention relates to gypsum-based self-leveling mortar, a preparation method thereof and gypsum-based self-leveling slurry. The gypsum-based self-leveling mortar is prepared from the following raw materials in parts by weight: 580 to 850 parts of desulfurized gypsum clinker, 60 to 180 parts of anhydrite, 120 to 400 parts of filler, 0.5 to 2.5 parts of retarder, 1 to 3 parts of water reducing agent, 0.3 to 0.6 part of defoaming agent, 0.1 to 0.3 part of stabilizer and 0 to 0.3 part of water-retaining agent. The self-leveling mortar provided by the invention has good fluidity, mechanical properties, volume stability, heat-conducting property and the like. The gypsum-based self-leveling floor is cheap in base material and stable and good in performance, and a technical basis is provided for later development of large-scale self-leveling mortar.

The invention relates to glass powder as well as a preparation method and application thereof. The glass powder is prepared from raw materials including an inorganic mixture and glass clinker, by taking the total mass of the preparation raw materials of the glass powder as 100wt%, the percentage contents of the inorganic mixture and the oxides contained in the glass clinker are as follows: 40wt%-54wt% of SiO2, 5wt%-9wt% of Al2O3, 10wt%-30wt% of SrO, 5wt%-8wt% of B2O3, 5wt%-15wt% of ZrO2, 0wt%-5wt% of CaO, 1wt%-8wt% of MgO, 1wt%-2wt% of Y2O3 and 0wt%-5wt% of a sodium-potassium mixture. The glass powder provided by the invention does not contain barium element, and has good biological safety, X-ray developing capability and low-temperature chemical stability. According to the preparation method provided by the invention, impurities are prevented from entering the glass powder, and the glass powder is high in quality and good in batch stability.

The invention belongs to the field of manufacturing of refractory materials for glass brick kilns, and particularly relates to a vertical casting process and device for an electric smelting AZS shrinkage-cavity-free pool wall brick. The vertical casting process for the electric smelting AZS shrinkage-cavity-free pool wall brick comprises the following steps that aluminum oxide, zircon sand, desilicated zirconium, sodium carbonate and AZS clinker are added into an electric furnace to be smelted into feed liquid; after melting is completed, the electric furnace is inclined, feed liquid flows into the feed liquid storage area from the hearth through the furnace nozzle flow guide area and then vertically flows into the quartz sand mold through the lower flow opening, and therefore vertical casting of the feed liquid is achieved. According to the vertical casting process for the electrically-fused AZS shrinkage-cavity-free pool wall brick, air holes in the surface of the AZS electrically-fused brick can be effectively reduced, the machining amount is reduced, the machining efficiency is improved, and the manufacturing cost is reduced; the invention also provides a device used by the method.

The embodiment of the invention discloses automatic sorting feeding and discharging equipment and a method thereof.The equipment comprises a conveying belt and a raw and clinker distributing mechanism arranged corresponding to a distributing area of the conveying belt, and the raw and clinker distributing mechanism comprises two raw and clinker distributing assemblies, a blocking distributing assembly, two first moving assemblies and two second moving assemblies; the raw and clinker distributing assembly comprises a feeding and discharging area, a clinker discharging area and a raw material waiting area, the feeding and discharging area is close to the distributing area, and the blocking and distributing assembly is used for blocking raw materials in the distributing area and moving the raw materials from the distributing area to the feeding and discharging area; the first moving assembly is used for moving raw materials on the feeding and discharging area to the raw material waiting area or moving clinker on the feeding and discharging area to the material distributing area, and the second moving assembly is used for moving clinker on the clinker discharging area to the feeding and discharging area. The equipment can replace an operator to automatically take out raw materials on the conveying belt and place clinker on the conveying belt, the labor intensity of the operator is reduced, and the working efficiency is improved.

The invention discloses a grate cooler material layer thickness measuring system, which comprises a real-time monitoring module, a numerical control module and a verification module, and is characterized in that the real-time monitoring module monitors the contour, temperature and air pressure of a grate cooler material layer in real time to obtain real-time monitoring data of the contour, temperature and air pressure of the grate cooler material layer; the numerical control module calculates the thickness of the grate cooler material layer according to the real-time monitoring data of the grate cooler material layer contour, the temperature and the air pressure, and an initial material layer thickness value is obtained; and the verification module intermittently measures the thickness of the grate cooler material layer in a multi-point manner to obtain multi-point material layer thickness data. The grate cooler material layer thickness measuring system combines multiple environmental parameters to achieve accurate thickness measurement, meanwhile, the thickness measurement result is intermittently calibrated, the purpose of checking and correcting the measurement result is achieved, the grate bed speed and the air chamber air pressure are accurately controlled, the phenomena that a loose material layer is compacted or red materials or equipment is overloaded are prevented, the clinker quality is improved, and the quality of the clinker is improved. And continuous operation of the system is ensured.

The utility model provides a grate cooler discharging device, and relates to the technical field of grate coolers, the grate cooler discharging device comprises a discharging hopper, a first material ramming assembly and a second material ramming assembly are rotatably arranged in the discharging hopper, the first material ramming assembly and the second material ramming assembly are arranged in an up-down staggered mode, and a first driving part and a second driving part are arranged on the outer side of the discharging hopper; the first driving part is used for driving the first material ramming assembly to swing, the second driving part is used for driving the second material ramming assembly to swing, and a material crushing grid is fixedly arranged in the discharging hopper and located below the second material ramming assembly. The discharging port of the discharging hopper is connected with the discharging pipeline, when large clinker enters the discharging hopper, the large clinker is scattered by the first material ramming assembly and the second material ramming assembly, then downwards impacts the material crushing grid to be further crushed and finally enters the discharging pipeline, the situation that the discharging pipeline is blocked is effectively avoided, normal flowing of materials is guaranteed, and no-load of the clinker conveyor is avoided; the production efficiency is ensured.

This invention relates to a long-life aluminosilicate refractory material for glass kilns, belonging to the technical field of refractory materials. The long-life aluminosilicate refractory material for glass kilns of this invention comprises, by weight percentage: 50-75 wt% bauxite clinker, with an Al2O3 content ≥85 wt%; 15-30 wt% silicon carbide powder, with a SiC content ≥98 wt%; 3-10 wt% boron nitride micropowder, with a BN content ≥99 wt%; and 2-10 wt% albite. The additives are sodium carboxymethyl cellulose and aluminum orthophosphate sol, with the sodium carboxymethyl cellulose used at 0.3-0.8 wt% of the total raw material weight, and the aluminum orthophosphate sol used at 3-6 wt% of the total raw material weight. The refractory material is fired under a nitrogen atmosphere. This long-life aluminosilicate refractory material for glass kilns breaks through the performance limits of traditional aluminosilicate refractory materials, providing key material support for the green and low-carbon development of the glass industry.

The invention relates to the field of ultrahigh-temperature ceramic materials, and discloses rare earth element doped quinary high-entropy boride powder and a preparation method thereof. The preparation method of the rare earth element doped quinary high-entropy boride powder comprises the following steps: 1) taking metal oxide powder, boron carbide powder and graphite powder as raw materials, and performing wet mixing to prepare mixed powder, 2) briquetting the mixed powder to prepare a green body, putting the green body into a high-temperature carbon tube furnace into which protective gas is introduced, heating, and carrying out pressureless sintering to obtain clinker; and 3) grinding the clinker to obtain the rare earth element doped high-entropy boride powder. The rare earth element doped quinary high-entropy boride powder prepared by the method has the advantages of high purity, no impurity phase, uniform metal element distribution and high rare earth element content, the preparation process is simple, the cost is low, the reaction temperature is lower, and large-scale production is facilitated.

The invention provides a preparation process of a high-performance refractory material based on regulation and control of a dolomite crystal form. The preparation process specifically comprises the following steps: step 1, weighing raw materials; step 2, pre-sintering the raw materials: respectively putting the weighed corundum, dolomite, quartz sand and mullite into a high-temperature furnace for high-temperature pre-sintering at the high-temperature pre-sintering temperature of 500-600 DEG C, heating and pre-sintering for 15-25 minutes, then taking out, and placing the pre-sintered corundum, dolomite, quartz sand and mullite clinker for later use; when the device is used, raw materials are pushed by the spiral auger to flow in the conveying holes from bottom to top, the thickness between the raw materials is reduced when the materials flow in the conveying holes, and the raw materials are matched with the heating columns on the inner walls of the conveying holes to achieve rapid temperature rising and heating; and the raw materials are pushed by the spiral auger to move upwards to the top of the fixed barrel to be stirred and mixed again.

This invention belongs to the field of inorganic non-metallic materials technology, and specifically relates to a low-carbon, high-iron sulfoaluminate cementitious material based on steel slag solid waste. It comprises the following raw materials in parts by weight: limestone 35-55 parts, anhydrite 10-20 parts, bauxite 20-45 parts, modified steel slag A 8-15 parts, and modified steel slag B 5-10 parts. Modified steel slag A is activated by acid / alkali, doped with calcium fluoride / sodium sulfate / titanium dioxide and calcined, and then in-situ co-precipitated to introduce magnesium aluminum spinel nanocrystals. This is used for raw material calcination, which can reduce the calcination temperature, refine the clinker grains, and improve early strength. Modified steel slag B is activated by acid / alkali, doped and calcined, and coated with silane coupling agent / polyvinyl alcohol / silica ball milling. It is incorporated as a blending material to improve the interface, slow-release hydration, and improve later-stage strength. This invention achieves high-value utilization of steel slag through synergistic modification, and the cementitious material has advantages such as low carbon content, early and high strength, suitable setting time, and excellent stability.

The invention belongs to the field of ceramsite proppant calcination, and particularly relates to a preheating calcination method of a ceramsite proppant. Comprising the following steps: S11, carrying out heat exchange on water-containing ceramsite raw material balls and first waste gas from a rotary kiln in a preheater to obtain a preheated semi-finished product; s12, the preheated semi-finished product is fed into the rotary kiln to be calcined, and ceramsite proppant clinker is obtained; and step S13, carrying out quenching treatment on the ceramsite proppant clinker to obtain a ceramsite proppant finished product. Wherein the first waste gas is flue gas generated in the calcining process of the rotary kiln. Therefore, the problem that waste gas discharged from the kiln tail of an existing rotary kiln carries a large amount of heat energy and cannot be fully utilized is solved.

This invention provides an M5Si3 type high-entropy aluminum silicide ceramic material, its preparation method, and its applications, belonging to the field of high-entropy ceramic technology. The invention involves mixing elemental metal powder, aluminum powder, and silicon powder, followed by wet ball milling to obtain a mixed powder. The mixed powder is then pressed into a green body and flash-sintered to obtain an M5Si3 type high-entropy aluminum silicide clinker. This clinker is further pressed into a green body and then spark-plasma sintered to obtain the M5Si3 type high-entropy aluminum silicide ceramic. The M5Si3 type high-entropy aluminum silicide ceramic of this invention exhibits excellent resistance to prolonged high-temperature oxidation at 2400 °C. Furthermore, its preparation method is simple in operation and process flow, has good reproducibility, and a short reaction time, making it suitable for component control and large-scale industrial production. It has a very broad application prospect in the field of hot-end structure protection for hypersonic vehicles.

The invention relates to the technical field of stemming refractory materials, and discloses an expansion iron mouth type anhydrous stemming for a blast furnace of more than 2000 cubic meters. The expansion iron mouth type anhydrous stemming comprises the following components in percentage by mass: 3-4% of high-temperature asphalt particles, 13-20% of ferro-silicon nitride, 10-13% of clay, 0.5-2% of carbon black, 3-5% of pyrophyllite, 31-39% of alumina clinker, 13-18% of silicon carbide, 5-7% of coke powder, 1-3% of polyethylene glycol and 12-13% of tar. According to the method, polyethylene glycol 200 is used as a binding agent, the characteristic that the polyethylene glycol 200 forms curing strength at 250-350 DEG C is utilized, the polyethylene glycol 200 and beta resin in high-temperature asphalt powder complete temperature relay to form carbon coke, a balling drum is rapidly stabilized within 15-30 minutes of gun pressing, and the iron notch depth is increased; according to the invention, the problem of strength of the stemming at 250-350 DEG C is effectively solved, good opening strength and enough iron notch depth are realized, the application effect on 2650 m < 3 > and 4000 m < 3 > blast furnaces is good, and the iron notch depth is respectively prolonged by 0.2 m and 0.4 m.

The application discloses a high-entropy rare earth boride ceramic material and a preparation method and application thereof. The preparation method of the high-entropy rare earth boride ceramic material comprises the following steps: 1) mixing metal oxide powder and boron carbide powder, grinding to prepare mixed powder, and then pressing to prepare a green body; 2) embedding the green body into graphite felt, and then placing the green body in a protective atmosphere to perform electric field sintering to prepare a sintered material; 3) grinding the sintered material into powder, screening, taking the screened sintered material powder, pressing and cold isostatic pressing to form a sintered material blank; and 4) embedding the sintered material blank into graphite felt, and then placing the sintered material blank in a protective atmosphere to perform electric field sintering under normal pressure. The high-entropy rare earth boride ceramic material has the advantages of a huge component space, uniform metal element distribution, a composition content close to a designed proportion, excellent mechanical properties, adjustable performance and the like, and the preparation process is simple, the reaction time is short, the equipment requirement is low, and the preparation cost is low, so that the high-entropy rare earth boride ceramic material is beneficial to large-scale industrial production.

The application belongs to the technical field of building materials, and particularly discloses a semi-flexible pavement grouting material, a preparation method and a use method thereof. The semi-flexible pavement grouting material comprises the following raw material components: high-free calcium belite sulphoaluminate clinker, gypsum, granulated blast furnace slag powder and fly ash cenospheres; wherein the high-free calcium belite sulphoaluminate clinker comprises the following mineral components: anhydrous calcium sulphoaluminate, free calcium sulphate, free calcium oxide, belite and iron phase. The application uses a large amount of industrial waste such as gypsum, granulated blast furnace slag powder, fly ash cenospheres and steel slag powder as main raw materials, and adds high-free calcium belite sulphoaluminate clinker, amorphous calcium aluminate and silica fume and the like, so as to utilize the synergistic effect of the components and prepare a high-strength semi-flexible pavement grouting material. The application effectively solves the problems of low strength, poor water resistance and poor durability of the grouting material under a large amount of gypsum.

The utility model belongs to the technical field of rotary kilns, and particularly relates to a rotary kiln stirring device which comprises a hollow shaft, the left end and the right end of the hollow shaft are both fixedly connected with fixing discs, and the surface of the hollow shaft is fixedly connected with a plurality of material crushing columns distributed in an annular array. A reinforcing plate is fixedly connected to the position, located between every two adjacent crushing columns, of the surface of the hollow shaft, the reinforcing plates are fixedly connected with a fixed disc, and an auxiliary mechanism is arranged on the fixed disc. According to the scheme, by arranging the hollow shaft, the fixed disc, the balancing weight and other structures, when the rotary kiln rotates, the hollow shaft, the balancing weight and other components can be driven to rotate under the action of gravity, clinker in the rotary kiln can be dispersed and can roll in the rotary kiln under the structures such as the material crushing columns, the material crushing rods and the reinforcing plates, and the clinker in the rotary kiln can be uniformly dispersed; therefore, the material stirring effect is improved; and caked and ring-formed mixed materials can be effectively mashed, so that the roasting efficiency is improved.

The invention discloses high-entropy carbide ceramic as well as a preparation method and application thereof. The preparation method of the high-entropy carbide ceramic comprises the following steps: 1) mixing metal oxide powder and carbon powder, carrying out wet ball milling, and drying to obtain mixed powder; 2) pressing the mixed powder into a green body, performing flash sintering, taking out the obtained clinker, crushing and screening to obtain clinker powder with a core-shell structure; and 3) pressing the core-shell structure clinker powder into a green body, and performing spark plasma sintering to obtain the high-entropy carbide ceramic. The high-entropy carbide ceramic has high fracture toughness, and the preparation method of the high-entropy carbide ceramic has the advantages of simple operation and process flow, short reaction time, low synthesis cost and the like, is suitable for microstructure regulation and large-scale industrial production, and has a very wide application prospect in the fields of high-temperature thermal structure components, nuclear fuel cladding, high-speed cutting tools and the like.

The invention relates to the field of clay materials. The invention aims to provide a composite purple pottery pug with a negative ion release function, the composite purple pottery pug is formed by mixing and stirring a main material and water, and the main material is prepared from the following raw materials in percentage by weight: 80% of purple pottery clay, 13% of tourmaline, 3% of feldspar and 4% of silica powder. The purple clay, the cordierite, the talc, the purple clay clinker and the silica powder are reasonably proportioned to form a main material of the pug, and the tourmaline and the auxiliary material are added, so that the forming plasticity is not obviously influenced, and the fineness and the air permeability structure of a finished product are ensured; the performance of releasing far infrared rays of a finished product produced from the Jianshui purple pottery pug is improved, and the Jianshui purple pottery pug has the advantage of releasing mineral ions and also has a certain antibacterial characteristic of releasing negative ions.

This invention relates to a method and system for the combined processing of Bayer process red mud and low-grade bauxite. The method includes: separately detecting the aluminum and silicon content in the red mud and bauxite, mixing the red mud and bauxite according to the detection results to achieve an aluminum-to-silicon ratio greater than 1 in the resulting raw material, adding a calcination aid, and calcining to obtain clinker. The clinker undergoes multiple cycles of water leaching and primary desilication treatment until the aluminum-to-silicon ratio in the solution is greater than 300 and the vanadium content reaches 2 g / L, at which point deep desilication is performed. The deep desilication solution is then carbonated to extract aluminum. Ammonium salts are added to the resulting solution to further extract vanadium. The final solution is crystallized and used as a calcination aid. The water leaching residue from the water leaching treatment is acid-leached, aged, and hydrolyzed to polymerize, yielding calcium sulfate, silica gel, and a water purification agent, respectively. This invention effectively utilizes both major and rare elements, solving the problems of red mud accumulation and the ineffective utilization of low-grade bauxite.

The invention provides a high-strength heat-insulating castable for a furnace top of an aluminum melting furnace and a preparation process of the high-strength heat-insulating castable, and belongs to the technical field of refractory materials for the aluminum melting furnace. The refractory castable product is prepared from the following raw materials: medium-low-density alumina clinker with the particle size of 8-1mm and the volume density of 1.50-2.60 g / cm < 3 >, high-alumina bauxite with the particle size of 1-0.088 mm and less than or equal to 0.074 mm, aluminum oxide micro powder with the particle size of less than or equal to 5mu m, silicon dioxide micro powder with the particle size of less than or equal to 2mu m, a sintering aid, an explosion-proof agent, a reinforcing agent, a water reducing agent and a binding agent. According to the invention, the middle-low density alumina clinker is selected as a main raw material, and the anti-explosion agent and the reinforcing agent are supplemented, so that the prepared castable has the breaking strength of 18-31 MPa at the high temperature of 1200 DEG C and the heat conductivity coefficient of 0.20-0.40 W / (m.K).

The invention relates to a construction binder comprising: - 35% to 65% by weight of clinker, - 5% to 30% by weight of a calcined clay matrix, - 5% to 30% by weight of a raw clay matrix, and - 0.05% to 5% by weight of a deflocculating agent; and the mass ratio of the raw clay matrix to the calcined clay matrix is ​​0.2 to 7. The invention further relates to a construction material comprising a construction binder according to the invention.

The invention relates to the technical field of frit recovery, in particular to an environment-friendly recovery treatment system for waste and defective frits, which is characterized in that an extrusion roller is driven to intermittently impact a driven inner cylinder according to a sharp-petal track through lifting switching of an adjustable gear ring and revolution and autorotation composite motion of a path grooved wheel, and a complete difference between low-toughness instant fragmentation of glass and high-toughness maintenance of clinker is utilized; selective crushing is realized; and the middle shifting arm synchronously gathers the large clinker and the glass together in the impact gap and maintains vertical layering, so that the large clinker is hit and the small clinker penetrates through the screen. The timing input bin is used for quantitatively pushing the raw materials in the buffer tank into the bottom execution bin in a crank-slider manner, so that overload or empty beating is avoided; the screening base drives the driven inner cylinder to continuously rotate through the rotating shifting arm, cullet is thrown out and collected once the cullet is smaller than the aperture of the screen, clinker is retained and continuously hit, the whole process is closed, the glass recovery rate is larger than or equal to 95%, the clinker inclusion rate is smaller than or equal to 3%, and waste and defective glass materials are recycled in an environment-friendly, efficient and high-value mode.

The invention provides an alumina clinker calcining device and a clinker calcining method thereof, and relates to the field of material calcining, the alumina clinker calcining device comprises a mounting base, a mounting rack is arranged at the top end of the mounting base, a calcining mechanism is arranged at the top end of the mounting rack, and the calcining mechanism is movably connected with a feeding mechanism. The calcining mechanism is arranged to effectively calcine alumina clinker, and meanwhile, the feeding mechanism is arranged, so that the problems that according to a traditional calcining device, untreated alumina raw materials directly enter a calcining cavity, large-particle raw materials are prone to being accumulated at the bottom to form a heat insulation layer, small-particle raw materials suspend on the upper portion, and the raw materials are prone to being burnt are effectively solved. The heating time and strength differences of the raw materials in different forms are obvious, and the phenomenon of insufficient combustion generally exists.

The invention discloses a refractory mortar sheet-shaped prefabricated body as well as a preparation method and a construction method thereof, and belongs to the technical field of refractory mortar. The refractory mortar flaky preform is prepared from the following raw materials: 70 to 80 percent of porous bauxite clinker, 5 to 10 percent of quartz powder, 5 to 10 percent of silica powder, 0.5 to 1.0 percent of isothiazolinone derivative, 3 to 6 percent of passivated aluminum powder, 0.1 to 0.3 percent of tricalcium aluminate and 3 to 5 percent of yellow dextrin. 10-15% of a polyvinyl alcohol solution is added; the mass ratio of polyvinyl alcohol to water in the polyvinyl alcohol solution is 1: (18-20); the preparation method comprises the following steps: uniformly mixing the raw materials, pressing into slices and curing. The refractory mortar sheet-shaped prefabricated body has a rich microporous structure, has heat insulation property and moisture permeability, also has good forming strength and good plasticity and high-temperature performance after wetting, realizes a construction mode of on-site unpacking and ready-to-use, greatly improves the construction efficiency, and is suitable for high-efficiency masonry of industrial kiln masonry.

The invention belongs to the technical field of building materials, and particularly discloses a low-carbon waste-utilizing high-performance ceramic tile adhesive and a preparation method thereof. The low-carbon waste-utilizing high-performance ceramic tile adhesive is mainly prepared from high-free-calcium belite sulphoaluminate clinker, granulated blast-furnace slag powder, gypsum and sand. The high-free-calcium belite sulphoaluminate clinker is applied to the ceramic tile adhesive, and the raw materials of the ceramic tile adhesive are further reasonably designed, so that the 28d tensile adhesive strength of the prepared ceramic tile adhesive and the tensile adhesive strength of the prepared ceramic tile adhesive after freeze-thaw cycle, soaking, thermal aging and airing for 20 minutes are both greater than or equal to 2 MPa, and the tensile adhesive strength of the prepared ceramic tile adhesive after freeze-thaw cycle, soaking, thermal aging and airing for 20 minutes is greater than or equal to 2 MPa. And the prepared ceramic tile adhesive has excellent strength, heat resistance, water resistance and freezing resistance.

According to the multi-stage crushing device applied to bauxite clinker production and the operation method of the multi-stage crushing device, the feeding mechanism, the primary crushing mechanism, the secondary crushing mechanism and the screening and discharging mechanism are arranged, so that abnormal materials in incoming materials can be separated out and crushed, and the quality of the abnormal materials is improved; material blocking and stacking caused by abnormal materials and potential safety hazards caused by manual crushing of the abnormal materials by workers are avoided; according to the multi-stage crushing device disclosed by the invention, the bauxite mineral aggregate is subjected to abnormal material crushing, primary crushing and secondary crushing, so that the crushed mineral aggregate blocks are uniform in size, and when the mineral aggregate crushed by the multi-stage crushing device disclosed by the invention is fired, the temperature of a kiln can be relatively reduced, the energy consumption can be reduced, unqualified bauxite clinker blocks are greatly reduced, and the quality of bauxite clinker is improved.

The present invention discloses a corundum-tin oxide composite refractory material, its preparation method, and application, relating to the field of refractory materials technology. The technical solution comprises the following components in percentage by mass: 30-35% corundum particles with a particle size of 0.1 mm < ≤ 1 mm; 20-25% corundum particles with a particle size of 1 mm < ≤ 3 mm; 15-20% corundum particles with a particle size of 3 mm < ≤ 6 mm; 5-15% alumina fine powder; 5-15% tin oxide clinker fine powder; 3-5% yttrium-stabilized zirconium fine powder; 3-5% calcium aluminate cement fine powder; 0.2-1% water reducer; and in the tin oxide clinker fine powder, SnO2> 98 wt.%, Fe2O3< 0.2 wt.%, Sb2O3< 1.5 wt.%, CuO< 0.6 wt.%, and a bulk density of ≥ 6.6 g / cm3. 3 The corundum-tin oxide composite refractory material of the present invention has good resistance to glass melt corrosion, thermal shock resistance and high-temperature volume stability.