China Hunan Yibeinuo New Material Co., Ltd. Company Cases

The charge must be equipped with wear-resistant ceramic linings at the blanking points and material flow rubbing points of the charging strip on the top of the bell furnace. The working conditions of the wear-resistant ceramic linings determine their high-temperature resistance, wear resistance, and the performance requirements of impact resistance, high-temperature resistance, wear resistance, and impact resistance the wear-resistant ceramic liner determines its service life, and its service life is directly related to the reliability of the furnace top charging equipment, which directly affects the blast furnace. Stabilizing the production cycle is also closely related to the blast furnace shutdown rate and the economic loss of the iron smelting plant.   The wear-resistant ceramic lining plate is made of aluminum oxide as the main raw material and rare metal oxides as the flux. After melting at a high temperature of 1700 ° C, it is combined with special rubber and high-strength organic adhesives. It can also be used alone. Ceramic backing plate as lining. The wear-resistant ceramic lining plate has high hardness, the Rockwell hardness is 80-90, which is higher than that of minerals such as ore and coal ash; the wear resistance is strong, the wear resistance is 266 times that of the steel plate, the density is small and easy to process, and the rubber Vulcanized together can be cut, twisted and assembled, not limited by the shape, size, and installation position of the equipment.   The wear-resistant ceramic lining plate is used as the lining plate of the blast furnace charging the car, which reduces the wear and tear of the equipment, improves the reliability of the blast furnace charging equipment, and ensures the stability and high output of the blast furnace. The size of the wear-resistant ceramic lining is mainly related to the size of the ore, impact force, temperature, etc. It is also a specific analysis of the specific situation and is not limited to which one is used.    

Wear-resistant ceramics are mainly used in thermal power, steel, smelting, machinery, coal, mining, chemical industry, port terminals, and other industries with severe wear and tear. Coal conveying, pulverizing, ash discharge, dust removal, and other systems can be installed and used, and techniques such as material conveying, batching, and dust removal in steel plants and sintering plants of smelters can also be installed and used.   Wear-resistant ceramic construction operations are divided into adhesive type, direct-bonded type, impact-resistant type, cemented type, assembly type, wear-resistant ceramic lining board, etc. Wear-resistant ceramics can be used for wear-resistant ceramic pipes such as wear-resistant elbows, wear-resistant straight pipes, wear-resistant tees, and wear-resistant special-shaped pipe fittings.    During the operation of the equipment, due to the constant friction, corrosion, and impact of hard media, the system is prone to leakage. Therefore, all manufacturers pay more attention to the construction of wear-resistant ceramics and have high requirements.   Equipment anti-wear is a systematic project. Different manufacturers take different measures and methods, and the results will vary. At present, the construction steps of our wear-resistant ceramics are generally to repair and polish the equipment first, then glue, apply glue, paste, and cure. Special working conditions also require welding and other work. These seemingly simple tasks are difficult to implement. so easy. It requires careful, experienced staff to complete and is time-consuming.   How to prevent the wear-resistant ceramic sheet from falling off during use? 1. Before the wear-resistant Taozi patch is applied to the surface of the steel part, the rust on the surface of the steel part should be cleaned to make the surface smooth. To obtain a good construction effect, the steel part should be pretreated by sandblasting. The surface of the steel parts needs to be wiped with acetone to achieve a particular effect of degreasing and degumming.   2. The ratio of wear-resistant ceramic glue should be accurate. The ratio of different glues is also different, and it must be strictly controlled. If the ratio is not suitable, the predetermined viscosity cannot be achieved; if the wear-resistant Taozi glue is not spread evenly, it will cause the wear-resistant ceramics to be non-sticky, easy to fall off, and wear-resistant. After the construction of the ceramic sheet is completed, it should be tapped lightly with a rubber hammer, and the construction surface should be flat;   3. Before the construction of the wear-resistant ceramic patch, the working temperature must be clarified. The wear-resistant ceramic piece can withstand a high temperature of 1,000 degrees. Different temperatures should choose glue with different temperature resistance, otherwise, it is easy to cause wear resistance as the temperature rises. The phenomenon of ceramic chips falling off.   http://www.ybnceramic.com/showroom/refractory-silicon-carbide-ceramic-burner-tube-sisic-burner-nozzle.html  

The wear-resistant ceramic composite pipe fully utilizes the weldability of the steel pipe and the high hardness, high wear resistance, corrosion resistance, and high temperature of the corundum ceramics. It is widely used in electric power, metallurgy, mining, coal, chemical, and other industries. It is an ideal wear-resistant and corrosion-resistant pipeline for sand, stone, coal powder, ash, aluminum liquid, and other abrasive granular materials and corrosive media.   Ceramic-composite pipes can be divided into the following types according to different production methods. Direct adhesive wear-resistant ceramic composite pipe: The ceramic patch is lined with the inner wall of the pipe. The manufacturing process is simple, the cost is relatively low, and collision is avoided during ceramic installation and transportation. Ceramic patch pipes are commonly used in an environment where construction is relatively simple and works at normal temperatures (100-150 ℃). Spot-welded card-type wear-resistant ceramic composite pipe: It is suitable for making large-diameter pipes. Paste ceramic orifice plates and weld iron bowls or studs to pipes. This double-layer connection is stronger and the service life of the pipes is longer. But it is more troublesome to make and the cost is higher. Integral ceramic composite pipe: The integral ceramic ring is lined in the pipe, the inner wall is smooth and does not block the material, and has good wear resistance and corrosion resistance. Compared with the patch-type pipe, it is more durable and the cost is slightly higher. According to the comparison of the above wear-resistant ceramic pipes, we choose the appropriate wear-resistant ceramic pipes according to the environment and needs of the pipes.      

Most customers don't know how to use welded wear-resistant ceramic liners for wear protection. We wrote a detailed construction instruction and shared it with you: The construction of welding wear-resistant ceramic lining is generally divided into three parts: 1. Cutting of ceramic sheet; 2. Mixing and smearing of ceramic glue; 3. Welding of ceramic sheets. Cutting of ceramic sheets: Because the hardness of alumina ceramic sheets is very high, it is challenging to process ordinary cutting materials. We generally use diamond blades for cutting. First, set out the construction surface and determine the specific size to be missed. When the blade heats up quickly, it must be cooled with water.    Mixing and smearing of ceramic glue: Ceramic glue is divided into AB glue, which is prepared according to the proportion, and the amount is taken according to the demand. It cannot be prepared too much at one time, and the glue that cannot be used up will become invalid after curing. Apply evenly around the small holes, and be careful not to block the small holes used for welding when applying.   Ceramic sheet welding: After the second step of pasting, the ceramic sheet has been firmly fixed on the working surface, but in order to make the ceramic lining board more impact-resistant, place the small iron cap in the small hole of the ceramic board and use spot welding The process is to weld the iron cap and the steel piece, and after the welding is completed, apply glue to the small porcelain piece and press it into the small hole of the porcelain piece.   The performance characteristics of welded ceramic wear-resistant lining are as follows: The welded ceramic wear-resistant lining has super wear resistance, the wear resistance is 20 times that of ordinary steel, and the Vickers hardness is as high as 1800, which is suitable for most working conditions;   Compared with the paste-type ceramic wear-resistant lining, the welded ceramic wear-resistant lining is more resistant to high temperatures. The corundum ceramic sheet is firmly fixed on the equipment steel plate through wear-resistant ceramic glue and welding nails and can withstand relatively large impact It will not fall off in the environment;   The application of welded ceramic wear-resistant lining is also quite extensive. According to its physical properties, impact resistance, and high-temperature resistance, it is mainly used in equipment with relatively large impact and wear of materials or equipment with relatively high temperature. Welded ceramic wear-resistant lining The plate is the choice of anti-wear material after the paste-type ceramic wear-resistant lining cannot meet the requirements.  

The impact of materials falling from high altitudes on the chute is large, which causes serious chute wear. In the past, manganese steel lining plates were generally used for wear prevention, which did not play a significant role. The wear is still very serious, and it will need to be replaced soon, leading to increased costs and affecting the efficiency of the factory. It is necessary to replace it with a more wear-resistant material, which requires a higher wear resistance.   Alumina ceramic is a kind of wear-resistant material, which is mainly made of aluminum oxide and fired for more than 1000 degrees. It has the characteristics of high-temperature resistance, high hardness, impact resistance, corrosion resistance, etc. Its wear resistance is 266 times that of manganese steel. It can well resist the impact of materials. Using wear-resistant ceramics to replace manganese steel lining plates can prolong the service life of equipment by more than 10 times.   The aluminum oxide ceramic lining plate is welded inside the chute to form a solid anti-wear layer. The welding can prevent the ceramics from falling off easily and can better resist the impact of materials. The welded orifice plate is double fixed by an iron bowl and ceramic glue, which can work in an environment below 700 ℃ for a long time. It is suitable for anti-abrasion protection of steel plant hoppers, silos, chutes, coking plant chutes, cement plants, thermal power plant coal chutes, and other equipment.  

The ash conveying system of the cement plant mainly adopts pneumatic conveying, because the ash conveying volume is large and the flow velocity is fast, the wear and tear of the pipeline are very serious. Once the pipeline wears out, it will easily lead to the deterioration of the airtightness of the pipeline, affect the transmission efficiency, and even stop the maintenance of the pipeline, so that the work will be at a standstill. Therefore, we need frequent repairs and maintenance. After understanding the principle of wear, we can optimize the pipeline structure in advance.   The reasons for the wear and tear of pneumatic conveying pipelines are summarized as follows: 1. In the process of pneumatic conveying, friction occurs between the material and the inner wall of the equipment pipeline. The greater the particle hardness of the material, the more serious the wear on the pipeline; the smaller the radius of the pipeline, the more serious the wear.   2. The ash and slag themselves have abrasions such as scour, impact, and scratches on the pipeline. As the material penetrates the surface, the tissue on the surface of the pipeline is partially damaged and detached.   3. The physical properties of the material also affect the wear of the pipeline. The main manifestations are: the larger the material particles, the greater the hardness, the sharp edges and corners on the surface of the material particles, the increased wear, the increased material concentration, and the increased wear.   4. Due to the contraction and diffusion effect of the elbow itself of the pneumatic ash conveying pipeline and the formation of the eddy current area, the degree of erosion and wear of the ash on the inner side of the elbow is much greater than that on the outer side of the ash. Although the concentration of ash and slag on the outside of the elbow increases due to the action of inertia, the contraction effect of the elbow and the formation of eddy currents greatly accelerate the flow velocity inside the elbow and cause multiple flushes, which cause serious wear on the inside of the elbow the main reason.   5. With the increase of ash concentration, pipeline flow velocity, and ash particle size during operation, the wear speed of the pipeline is correspondingly accelerated.   Therefore, when designing and installing the pneumatic ash transportation pipeline, the pipeline should be arranged reasonably. At the same time, to improve the service life of the elbow of the ash removal pipeline, it is first suggested that the elbow part be lined or filled with wear-resistant materials, or all the ash transportation Pipes are replaced with wear-resistant ceramic pipes. Attach an easily replaceable wear-resistant ceramic backpack to the outside of the very worn elbow, or thicken the easily worn part of the elbow and weld flanges at both ends of the elbow for easy replacement. Secondly, when designing and installing, try to match the ash discharge volume, water pump, motor, and pipeline reasonably, to ensure a reasonable gray-water ratio and pipeline flow rate, and to reduce pipeline wear.  

Alumina ceramics have been widely used in many industries of the national economy because of their excellent performance. Do you know the maintenance methods of alumina ceramics? 1. Pay attention to effective storage Because alumina ceramic is a pure ceramic material, it is necessary to pay attention to the effective use of packaging during storage to avoid moisture or the influence of various pollution sources in the air. Alumina ceramics need a relatively dry and well-ventilated environment Store in the middle and do a good job of moisture-proof work.    2. Pay attention not to be hot and cold during processing Because alumina ceramic materials have good hardness and strength, but their performance will be affected by hot and cold processing, alumina ceramic manufacturers suggest that users should pay attention to maintaining a constant temperature during operation, and not cause product quality to be caused by hot and cold Problems are prone to cracks. 3. Choose an effective processing method Although alumina has many advantages in use, it is also difficult to process. Therefore, it is necessary to choose the corresponding effective processing method to improve the processing efficiency and quality of the product. Alumina ceramics are characterized by high brittleness during processing, so grinding or cutting and laser heating should be selected for processing operations.  

Wear-resistant ceramic liner style classification: Flat plate, orifice welded plate, slotted plate, mutual pressure plate, dovetail groove, trapezoidal plate, curved plate, inner and outer arc plate, big and small head plate, imported alumina powder ceramic lining plate for the cyclone. Wear-resistant ceramic lining features: It has wear resistance, impact resistance, corrosion resistance, high-temperature resistance, and convenient construction. It is an ideal material for wear resistance on the surface of conveying equipment for materials (coal powder, mineral concentrate powder, tailings, cement, etc.) in industries such as electric power, metallurgy, coal, petroleum, cement, chemical industry, machinery, etc. It is very safe and reliable to use on certain occasions, and its service life is ten to twenty times higher than that of cast stone, wear-resistant alloy cast steel, steel plastic, steel rubber, and other materials. Wear-resistant ceramic lining applications: Iron and steel industry: Alumina wear-resistant ceramic welding plate and flat plate in slag trough of the steel plant, wear-resistant ceramic flat plate of falling hopper, wear-resistant ceramic welding plate of the induced draft fan.    Conveyor system: bucket wheel machine disc, hopper, silo, belt conveyor skirt, trolley tee bucket, conveying hopper. Batching system: mixing silo, primary mixing cylinder, secondary mixing cylinder, mixing disc, mixing cylinder scraper, pelletizing disc Sintering system: beneficiation hopper under the vibrating screen, raw material transportation chute, cyclone dust collector and pipeline, fan impeller Cement industry: Limestone crushing system and raw fuel pre-homogenization system: chute, hopper, belt drum Raw meal mill system: deflector vane of separator, cone of the wall, a pipeline from vertical mill to the cyclone, cyclone, fuel mill (steel ball mill), the shell of division, inner cone, pulverized coal pipeline Fuel mill (steel ball mill): separator shell, inner cone, pulverized coal pipeline, powder return pipeline Port industry Berth fixed hopper, bucket wheel machine fixed hopper, belt conveyor transfer station fixed hopper, ship unloader hopper Chemical Industry: Conveyor system: hopper, silo Dust removal system: dust removal pipe, elbow, fan casing and impeller, cyclone Coal industry: Coal handling system: chute, hopper, silo Coal washing system: dense medium cyclone Conveying system: pipes, elbows, pipes, hoppers, silos, distribution ports Mining industry: Conveyor system: hopper silo

Wear-resistant ceramics, also known as modern ceramics, mainly comprise high-purity alumina. Because their toughness and hardness are much higher than ordinary daily-use ceramics, they can be used as wear-resistant materials in industrial equipment.   As an industrial wear-resistant material, wear-resistant ceramics have good wear and corrosion resistance. Still, because of their relatively high hardness, which is close to the hardness of diamonds, it isn't easy to reprocess wear-resistant ceramics. Let's get to know the processing technology of wear-resistant ceramics.    The processing technology of wear-resistant ceramics has the following three categories according to the processing method: 1. Surface treatment: Use diamond grinding discs to grind wear-resistant ceramics or use sandpaper to polish the surface of wear-resistant ceramics; 2. Cutting treatment: Because the hardness of wear-resistant ceramics is relatively high, ordinary cutting machines cannot cut ceramics, and special equipment such as diamond cutting discs or ultrasonic waves, lasers, and water jets are required for cutting treatment; 3. Surface marking: using photolithography technology or etching technology through chemical or physical means to make wear-resistant ceramics form concave-convex or hollow-out molding effects; 4. Wear-resistant ceramics are difficult-to-process materials, which cannot be processed in general machining workshops. The processing of wear-resistant ceramics generally requires special processing tools and processing techniques, so it is a better choice for professionals to operate and process.    

The scientific name of zirconia is zirconia, and its molecular formula is ZrO2. It is the main oxide of zirconium. The minerals containing zirconium in nature mainly include baddeleyite and zircon. Zirconia is usually a white odorless and tasteless crystal, insoluble in water, hydrochloric acid, and dilute sulfuric acid, chemically stable, and has the characteristics of high hardness, high melting point, high resistivity, high refractive index, and low thermal expansion coefficient. Wear-resistant ceramics, refractory materials, machinery, electronics, optics, aerospace, biology, chemistry, etc. have been widely used in various fields. Our common artificial drills and dental implants also use zirconia as the main material.    Properties of Zirconia 1. High hardness: The hardness of zirconia products can usually reach more than 7.5 on the Mohs scale, and the hardness of some products such as zirconia ceramics can exceed 9, second only to diamond. High hardness means that it has strong wear resistance, so zirconia ceramics are good wear-resistant materials. 2. High melting point: The melting point of zirconia is as high as 2715°C, and its chemical properties are stable. It is an excellent refractory material. 3. Low thermal conductivity and low expansion coefficient: The thermal conductivity of zirconia is relatively low among common materials (1.6-2.03W/(m.k)), and the thermal expansion coefficient is close to that of metal. Therefore, zirconia ceramics are suitable for official ceramic materials, such as zirconia ceramic mobile phone exterior structural parts. 4. Special conductivity: Zirconia does not conduct electricity at room temperature, and its resistivity is extremely high. However, in a high-temperature environment, zirconia has a certain conductivity. Using this principle, zirconia is also used in many electronic devices.