CN109111209B - Microcrystal material for cement kiln - Google Patents
Microcrystal material for cement kiln Download PDFInfo
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- CN109111209B CN109111209B CN201810844421.0A CN201810844421A CN109111209B CN 109111209 B CN109111209 B CN 109111209B CN 201810844421 A CN201810844421 A CN 201810844421A CN 109111209 B CN109111209 B CN 109111209B
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3873—Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
Abstract
The invention discloses a microcrystal material for a cement kiln, which comprises the raw materials of silicon carbide, silicon nitride, ozokerite, quartz, microcrystal powder and glass beads, and belongs to the field of processing of inorganic nonmetal materials. The invention can change the property of the lining material of the cement kiln system, ensure that the material does not react with the lining material in a bonding way, avoid the generation of firm crust, reduce the failure of the cement kiln, improve the operation rate of the cement kiln, effectively enhance the safety of the cement kiln and save the production cost.
Description
Technical Field
The invention relates to an inorganic non-metallic material, in particular to a microcrystalline material, belonging to the field of processing of inorganic non-metallic materials.
Background
The crust generated in the cement kiln system is a stubborn disease which can not be avoided in the production process of the novel dry-method predecomposition kiln technology adopted in the cement production industry. Harmful components such as alkali, chlorine, sulfur and the like in raw materials in the cement clinker production process are decomposed in a calcining area of the kiln and are converted into steam, the steam is carried to a low-temperature area of the preheater by flue gas and is condensed on the surfaces of material particles, and the material particles are returned to a calcining system again, and the process is called as circulation enrichment of the harmful components. After harmful components in the preheater at the tail of the cement kiln are condensed and separated out, the harmful components can be combined with materials to form crusts containing low-temperature liquid phases. When the skinning is serious, the ventilation of a system is influenced, and even a cyclone cylinder is blocked, so that the accident of stopping the kiln is caused, and the potential hazard is brought to the safety production; when the position of the smoke chamber is seriously skinned, the ventilation in the kiln is influenced, the fuel is incompletely combusted to form reducing atmosphere, and the yield and the clinker quality of the system are reduced; when the crusting in the decomposing furnace is serious, the negative pressure of the system is increased, the ventilation is not smooth, and the system pressure fluctuation, the material collapse and even the system blockage can be caused when the crusting falls down; the five-stage cyclone cylinder and the blanking pipe are skinned, which can seriously cause the blockage accident of the preheater and reduce the operation rate of the equipment.
In the event of kiln shutdown in the rotary kiln process, the kiln shutdown accidents caused by the blockage of the preheater account for more than 70 parts of the total kiln shutdown accidents, and the kiln shutdown time caused each year is more than 20 hours. The root cause of the blockage accident of the preheater is that large-size crusts are accidentally collapsed, a blanking pipe is blocked, materials cannot pass smoothly, and accumulation is caused, so that the crusts are prevented from growing in the preheater, and the blockage accident is avoided to be the prominent problem of kiln process management.
At present, the following measures are generally adopted for controlling the skinning of a preheater system: firstly, controlling the content of harmful ingredients in the raw combustible material; controlling the calcining atmosphere in the kiln; properly reducing the temperature of the decomposing furnace within an allowable range meeting the requirement of the decomposition rate of the calcium oxide; and fourthly, performing the closed plugging work of the system. These measures put higher demands on the quality of the raw material, increase the production cost, and in addition, increase the control difficulty of the operator and increase the workload of the operator.
Patent document CN201010541518.8 describes an anti-skinning castable for cement kiln, which is made of refractory alumina-silica material as aggregate, fused magnesia-alumina spinel or silicon carbide powder, silicon nitride, alpha alumina micropowder, silica fume, aluminate refractory cement, and water reducing agent or explosion-proof fiber, and can effectively reduce the weight of cement kilnThe phenomena of skin formation and blockage in the process. However, the product introduces inert materials, so that the product has chemical erosion resistance, and chemical reaction is carried out at high temperature to generate a compact glassy smooth substance layer on the surface of the material. In actual use, the thickness of the crust can reach 200mm, and manual cleaning is still needed. Patent document CN201210311621.2 describes an anti-skinning spray paint for cement kilns, which is composed of flint clay, SiC, Guangxi white mud and alpha-Al2O3The coating is prepared from micro powder, high-aluminum fine powder, SiC and SiC fine powder, pure calcium aluminate cement, spodumene, pyrophyllite and polypropylene fibers, and can exert good anti-skinning effects on a cement kiln discharge pipe, a smoke chamber and other parts, the coating has small rebound during coating construction, but the anti-skinning performance is common, and the service life is short.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the microcrystalline material for the cement kiln, which can change the property of a lining material of a cement kiln system, ensure that the material does not react with the lining material in a bonding way, avoid firm skinning, reduce the fault of the cement kiln, improve the running rate of the cement kiln, effectively enhance the safety of the cement kiln and save the production cost.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the microcrystal material for cement kiln is prepared with silicon carbide, silicon nitride, aosha, quartz, microcrystal powder and glass bead as material.
The technical scheme of the invention is further improved as follows: the raw materials comprise, by weight, 10-40 parts of silicon carbide, 2-15 parts of silicon nitride, 15-60 parts of ozokerite, 5-20 parts of quartz, 2-10 parts of microcrystalline powder and 1-10 parts of glass beads.
The technical scheme of the invention is further improved as follows: the raw materials comprise, by weight, 15-33 parts of silicon carbide, 4-12 parts of silicon nitride, 20-50 parts of ozokerite, 10-15 parts of quartz, 4-8 parts of microcrystalline powder and 3-7 parts of glass beads.
The technical scheme of the invention is further improved as follows: the diameters of the silicon carbide, the silicon nitride, the austenitic sand, the quartz, the microcrystalline powder and the glass beads are all 70-100 mu m.
The technical scheme of the invention is further improved in that the preparation method comprises the following steps: the raw materials are uniformly mixed, a green body is prepared by a press forming process, and then a one-time sintering process is adopted, and heat preservation is carried out, so that the microcrystalline material is obtained.
The technical scheme of the invention is further improved as follows: the firing temperature is 1400-1500 ℃.
The technical scheme of the invention is further improved as follows: the heat preservation time is 2-4 hours.
The technical scheme of the invention is further improved as follows: the microcrystalline material is applied to the lining materials of a preheater, a blanking pipe, a smoke chamber or a grate cooler of a cement kiln.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the microcrystalline material for the cement kiln can change the property of a lining material of a cement kiln system, so that the material does not react with the lining material in a bonding manner, firm skinning is avoided, the failure of the cement kiln is reduced, the running rate of the cement kiln is improved, the safety of the cement kiln is effectively enhanced, and the production cost is saved.
In the raw material formula of the invention, the silicon carbide has stable chemical property, high heat conductivity coefficient, small thermal expansion coefficient and good wear resistance. The silicon nitride does not react with inorganic acid, has strong corrosion resistance, lubricity, wear resistance and oxidation resistance at high temperature, and can resist cold and hot impact when being added into the microcrystalline material, and the microcrystalline material can not be broken when being rapidly heated after being rapidly cooled. The austenitic sand has the characteristics of high strength, good wear resistance and strong oxidation resistance. The quartz is hard, wear-resistant and stable in chemical property. The microcrystal powder has good acid and alkali resistance, corrosion resistance, heat resistance (temperature resistance of 1700 ℃), insulativity, small thermal expansion coefficient, good size stability function, larger thickness-diameter ratio, solidification cracking prevention and reinforcement function. The glass beads can improve the polishing performance and the acid and alkali resistance. The austenite sand is used as aggregate, so that the microcrystalline material has better wear resistance; the high-temperature strength of the microcrystal material can be improved by the phase change of the austenitic sand, the silicon carbide and the quartz at high temperature; the addition of the silicon carbide can improve the thermal shock resistance stability of the microcrystalline material, the microcrystalline material is oxidized at high temperature to form a smooth protective film, and the protective film has the function of anti-skinning; the addition of the silicon nitride and the microcrystalline powder can ensure the integral acid-base resistance and corrosion resistance of the microcrystalline material; the addition of the glass beads can improve the sanding property of the microcrystalline material and ensure that the system has enough thermal stability. When the diameters of the silicon carbide, the silicon nitride, the ozokerite, the quartz, the microcrystalline powder and the glass beads are all 70-100 mu m, the uniform mixing of all the components can be ensured, the strengthening reaction is carried out, the obtained microcrystalline material is uniform and stable, and the anti-skinning effect is obvious.
The silicon carbide-glass composite material comprises, by weight, 10-40 parts of silicon carbide, 2-15 parts of silicon nitride, 15-60 parts of ozokerite, 5-20 parts of quartz, 2-10 parts of microcrystalline powder and 1-10 parts of glass beads, and preferably comprises 15-33 parts of silicon carbide, 4-12 parts of silicon nitride, 20-50 parts of ozokerite, 10-15 parts of quartz, 4-8 parts of microcrystalline powder and 3-7 parts of glass beads. The microcrystalline material prepared by mixing the components according to the proportion can better combine and complement the high temperature resistance, the wear resistance, the corrosion resistance, the impact resistance and the thermal shock stability of the components, achieves the combination effect of '1 +1> 2', can resist the high temperature of 1300 ℃, has the corrosion resistance superior to that of alloy steel, ceramic tiles and casting materials, is acid-resistant and alkali-resistant, and can be used in the environment of acid-base alternation particularly at high temperature. The acid and alkali resistance of the microcrystalline material is as follows: 99.61% of concentrated sulfuric acid solution, 99.44% of dilute sulfuric acid (20%) and 96.38% of NaOH-resistant solution (20%), and the corrosion resistance is excellent.
According to the invention, each raw material component is made into a blank through a compression molding process, a microcrystalline material can be obtained through a one-time sintering process, when the sintering temperature is 1400-1500 ℃ and the heat preservation time is 2-4 hours, the glass beads are just fused into a liquid state, other components in the raw materials are wrapped in the glass beads, the other components reach the solid solution limit in the glass bead liquid, the solid solution strengthening and aging strengthening effects are enhanced, the strength of the microcrystalline material is increased, and meanwhile, the prepared microcrystalline material has good high temperature resistance and good wear resistance. When the microcrystalline material is used for the lining of a cement kiln system, the microcrystalline material does not react with a cement clinker batch at a high temperature, so that the skinning phenomenon is effectively avoided, the labor intensity of manual skinning cleaning is reduced, the production efficiency is improved, and the production accidents are reduced. In addition, when the wall thickness of the lining is only 40mm, the aim of preventing the skinning can be achieved, the using amount of the microcrystalline material is reduced by half compared with that of the castable, and the internal space of the preheater is enlarged; the microcrystalline material has good heat insulation effect, can effectively keep the heat load in equipment and improves the product quality.
The microcrystalline material prepared by the invention has outstanding high temperature resistance and thermal shock resistance stability, and when being applied to parts such as a preheater, a blanking pipe, a smoke chamber, a grate cooler and the like which are easy to crust, the microcrystalline material can be used as a lining material of lining plates of the preheater, the blanking pipe, the smoke chamber and the grate cooler, and only the lining is added at the part which is easy to crust, thereby achieving the purpose of preventing the crust and saving the production cost.
Detailed Description
The following are some specific embodiments of the present invention for further detailed description.
The microcrystal material for cement kiln is prepared with silicon carbide, silicon nitride, aosha, quartz, microcrystal powder and glass bead as material. The raw materials comprise, by weight, 10-40 parts of silicon carbide, 2-15 parts of silicon nitride, 15-60 parts of ozokerite, 5-20 parts of quartz, 2-10 parts of microcrystalline powder and 1-10 parts of glass beads, and preferably 15-33 parts of silicon carbide, 4-12 parts of silicon nitride, 20-50 parts of ozokerite, 10-15 parts of quartz, 4-8 parts of microcrystalline powder and 3-7 parts of glass beads.
The preparation method comprises the following steps: uniformly mixing the raw materials, preparing a blank by a press forming process, and then adopting a one-time firing process, wherein the firing temperature is 1400-1500 ℃, and preserving heat for 2-4 hours to obtain the microcrystalline material.
The microcrystal material is applied to the lining materials of preheaters, blanking pipes, smoke chambers or grate coolers of cement kilns.
Example 1
The microcrystal material for cement kiln is prepared with silicon carbide, silicon nitride, aosha, quartz, microcrystal powder and glass bead as material. The raw materials comprise, by mass, 24 parts of silicon carbide, 8 parts of silicon nitride, 45 parts of austenitic sand, 12 parts of quartz, 6 parts of microcrystalline powder and 5 parts of glass beads.
The preparation method comprises the following steps: the raw materials are uniformly mixed, a green body is prepared by a press forming process, and then a one-time firing process is adopted, wherein the firing temperature is 1450 ℃, and the temperature is kept for 3 hours, so that the microcrystalline material is obtained.
The microcrystal material is applied to a lining material of a smoke chamber of a cement kiln.
Example 2
The microcrystal material for cement kiln is prepared with silicon carbide, silicon nitride, aosha, quartz, microcrystal powder and glass bead. The raw materials comprise, by mass, 10 parts of silicon carbide, 2 parts of silicon nitride, 60 parts of austenitic sand, 20 parts of quartz, 2 parts of microcrystalline powder and 6 parts of glass beads.
The preparation method comprises the following steps: the raw materials are uniformly mixed, a green body is prepared by a press forming process, a one-time firing process is adopted, the firing temperature is 1500 ℃, and the heat preservation is carried out for 4 hours, so that the microcrystalline material is obtained.
The microcrystalline material is applied to a lining material of a preheater of a cement kiln.
Example 3
The microcrystal material for cement kiln is prepared with silicon carbide, silicon nitride, aosha, quartz, microcrystal powder and glass bead. The raw materials comprise, by mass, 40 parts of silicon carbide, 15 parts of silicon nitride, 15 parts of austenitic sand, 210 parts of quartz, 9 parts of microcrystalline powder and 1 part of glass beads.
The preparation method comprises the following steps: the raw materials are uniformly mixed, a green body is prepared by a press forming process, and then a one-time firing process is adopted, wherein the firing temperature is 1400 ℃, and the heat preservation is carried out for 2 hours, so that the microcrystalline material is obtained.
The microcrystalline material is applied to a lining material of a discharge pipe of a cement kiln.
Example 4
The microcrystal material for cement kiln is prepared with silicon carbide, silicon nitride, aosha, quartz, microcrystal powder and glass bead. The raw materials comprise, by mass, 15 parts of silicon carbide, 4 parts of silicon nitride, 50 parts of austenitic sand, 15 parts of quartz, 4 parts of microcrystalline powder and 7 parts of glass beads.
The preparation method comprises the following steps: the raw materials are uniformly mixed, a green body is prepared by a press forming process, and then a one-time firing process is adopted, wherein the firing temperature is 1420 ℃, and the temperature is kept for 2.5 hours, so that the microcrystalline material is obtained.
The microcrystalline material is applied to a lining material of a grate cooler of a cement kiln.
Example 5
The microcrystal material for cement kiln is prepared with silicon carbide, silicon nitride, aosha, quartz, microcrystal powder and glass bead. The raw materials comprise, by mass, 33 parts of silicon carbide, 12 parts of silicon nitride, 23 parts of austenitic sand, 10 parts of quartz, 8 parts of microcrystalline powder and 3 parts of glass beads.
The preparation method comprises the following steps: the raw materials are uniformly mixed, a green body is prepared by a press forming process, a one-time firing process is adopted, the firing temperature is 1480 ℃, and the heat preservation is carried out for 3.5 hours, so that the microcrystalline material is obtained.
The microcrystalline material is applied to a lining material of a preheater of a cement kiln.
In order to better verify the use effect of the present invention, the inventors conducted alternative experiments.
The pouring material at the position of 1 square meter of the south wall of the 3# kiln smoke chamber is replaced by the microcrystalline material in the embodiment 1. The type of the No. 3 kiln is phi 4.4 x 52m, the two-grade short kiln is a TTF furnace five-stage double-series preheater, the working temperature of 1-3 stages of the preheater is 300-800 ℃, the working temperature of 4-5 stages of the preheater is above 800 ℃, the temperature of a smoke chamber is 1150-1250 ℃, and the working environment of the preheater is hot air washing with materials. The effects of use are shown in table 1.
TABLE 1
| Before use | After use | |
| 8 hours after the charge | Severe skinning, an average hourly thickness increase of 20-30 mm | Substantially free of crusting |
| 7 days after the feeding | Severe skinning, an average hourly thickness increase of 20-30 mm | No thick crust was found |
| 17 days after charging | Severe skinning, an average hourly thickness increase of 20-30 mm | The thickness of the crust is 5-20 mm |
According to the detection results in the table 1, before the microcrystalline material disclosed by the invention is used, the tobacco chamber is seriously skinned, the average thickness of the tobacco chamber is increased by 20-30 mm per hour, and the normal production can be ensured by cleaning 3 times per 8 hours. After the microcrystalline material is used, no damage to the surface of the microcrystalline lining plate at the position is found after 8 hours after normal feeding. After one week no thick crust was found. And after 17 days, the microcrystalline lining plate is observed to be free of damage and cracks, only one layer of thin crust is 5-20 mm, the cleaning process is simple, and the microcrystalline lining plate can drop after being blown.
The microcrystalline material in the embodiment 1 is applied to a lining board of a cement production line preheater, the performances of wear resistance, high temperature resistance, acid and alkali resistance, rapid cooling and heating resistance and the like can meet the production requirements, the heat resistance can meet the normal production requirement of more than 1300 ℃, and the phenomena of falling and burning cracking do not occur. After 17 days of production, the microcrystalline lining is only 20mm in crusting without cleaning, and the requirement of anti-skinning performance is met without cleaning.
Claims (7)
1. The microcrystal material for the cement kiln is characterized in that: the raw materials comprise, by weight, 10-40 parts of silicon carbide, 2-15 parts of silicon nitride, 15-60 parts of ozostrite, 5-20 parts of quartz, 2-10 parts of microcrystalline powder and 1-10 parts of glass beads.
2. The microcrystalline material for the cement kiln as recited in claim 1, wherein: the raw materials comprise, by weight, 15-33 parts of silicon carbide, 4-12 parts of silicon nitride, 20-50 parts of ozokerite, 10-15 parts of quartz, 4-8 parts of microcrystalline powder and 3-7 parts of glass beads.
3. The microcrystalline material for the cement kiln as recited in claim 2, wherein: the diameters of the silicon carbide, the silicon nitride, the austenitic sand, the quartz, the microcrystalline powder and the glass beads are all 70-100 mu m.
4. The microcrystalline material for the cement kiln as claimed in claim 3, wherein the preparation method comprises the following steps: the raw materials are uniformly mixed, a green body is prepared by a press forming process, and then a one-time sintering process is adopted, and heat preservation is carried out, so that the microcrystalline material is obtained.
5. The microcrystalline material for the cement kiln as recited in claim 4, wherein: the firing temperature is 1400-1500 ℃.
6. The microcrystalline material for the cement kiln as recited in claim 4, wherein: the heat preservation time is 2-4 hours.
7. The microcrystalline material for the cement kiln as recited in any one of claims 1 to 6, wherein: the microcrystalline material is applied to the lining materials of a preheater, a blanking pipe, a smoke chamber or a grate cooler of a cement kiln.
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| CN114516757A (en) * | 2020-11-20 | 2022-05-20 | 江苏恒耐炉料集团有限公司 | Anti-skinning nano lining plate component for cement kiln and processing flow |
| CN112851353A (en) * | 2021-01-20 | 2021-05-28 | 浙江正豪耐火材料股份有限公司 | Microcrystal metal ceramic plate and production process thereof |
| CN115716749A (en) * | 2022-10-31 | 2023-02-28 | 荆门雷法耐火科技有限公司 | Anti-skinning microcrystalline material |
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| CN101987793A (en) * | 2010-11-12 | 2011-03-23 | 安徽瑞泰新材料科技有限公司 | Anti-skinning pouring material for cement kiln |
| CN102391007A (en) * | 2011-08-17 | 2012-03-28 | 通达耐火技术股份有限公司 | Silicon carbide brick for garbage incinerator and preparation method thereof |
| CN104671805A (en) * | 2015-01-23 | 2015-06-03 | 湖州丰盛新材料有限公司 | Anti-skinning castable and preparation method thereof |
| CN105481387A (en) * | 2014-09-19 | 2016-04-13 | 青岛百键城环保科技有限公司 | Novel casting material with abrasion resistance and corrosion resistance and preparation method of novel casting material |
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| JPS52154817A (en) * | 1976-06-19 | 1977-12-22 | Onoda Cement Co Ltd | Manufacture of refractories |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987793A (en) * | 2010-11-12 | 2011-03-23 | 安徽瑞泰新材料科技有限公司 | Anti-skinning pouring material for cement kiln |
| CN102391007A (en) * | 2011-08-17 | 2012-03-28 | 通达耐火技术股份有限公司 | Silicon carbide brick for garbage incinerator and preparation method thereof |
| CN105481387A (en) * | 2014-09-19 | 2016-04-13 | 青岛百键城环保科技有限公司 | Novel casting material with abrasion resistance and corrosion resistance and preparation method of novel casting material |
| CN104671805A (en) * | 2015-01-23 | 2015-06-03 | 湖州丰盛新材料有限公司 | Anti-skinning castable and preparation method thereof |
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