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The refractory ball itself has high heat resistance, so people often use it as a heating fuel for heating industrial furnaces. The refractory ball has a stable and continuous heating function, which can make the customer’s industrial furnace run continuously and make the products in the industrial furnace quickly dissolve. As for which fields will use refractory balls, this article starts from the following three aspects. 1. Chemical industry Cheap refractory balls are usually used in the chemical industry because the chemical industry often refines some chemicals. These chemicals need to dissolve at stable temperatures. If the temperature is unstable, the chemicals in the heating furnace will produce a certain degree of chemical reaction, which may affect the safety of the customer’s chemical plant and put the personnel and instruments inside the chemical plant in a relatively unsafe environment. 2. Natural gas fields Quality-assured refractory balls are available for natural gas applications. Because people in natural gas fields need to heat more things and the output is relatively large, refractory balls have more application opportunities in the natural gas field. Refractory balls help natural gas companies heat furnaces to varying degrees. Customers can change the number of refractory balls according...
The resilience and hardening degree of refractory materials. During spraying construction, due to the rebound and peeling of stone particles, unscientific coordination in brushing and patching inspections will reduce the utilization rate of refractory materials, reduce readiness, and even endanger the use of the operation village life. Wet spraying of the shrunken paint after flux extraction and continuous high-temperature fire brushing of the paint can greatly reduce the return of raw materials. In addition, adjusting the brush direction, spacing, and linear speed formula of the automatic spraying equipment according to the fabric structure and the size of the final particles on site is an important way to overcome the elastic state. In this method, a layer of mortar is sprayed onto the blasting surface before the granular material is applied. Resilience issues have also been addressed. Solving the rebound problem of refractory materials, also allows refractory brick manufacturers to understand the hardening degree of refractory materials. Under the necessary conditions of the corresponding external natural environment, the structure formed by the physical transformation between the refractory material and the flux has a corresponding tensile strength called a hard bottom. The entire process of lowering the ambient temperature, vitrification of the...
Prefabricated blocks and unfired bricks are formed products in amorphous refractory materials. They are non-flammable or light-burning products with excellent performance. They are new materials that are developing rapidly and widely used. Prefabricated blocks, also known as prefabricated components, belong to the category of amorphous refractory materials. The reason is that the raw material composition, preparation principle, binder, and additive use of non-burning bricks are the same as those of non-burning refractory materials, and they are no-burning or light-burning products. Compared with unshaped refractory materials constructed on site, this product has the advantages of accurate size, stable performance, short construction period, and low cost; compared with sintered refractory bricks, the product yield is high, no kiln is needed, energy saving, and low production cost, excellent performance. Therefore, prefabricated blocks and unfired bricks have broad development prospects. It should be pointed out that in recent years, non-fired bricks have developed rapidly, and new varieties have emerged one after another, forming a new prosperity. The development and application of new varieties of magnesia-carbon bricks, alumina-magnesia-carbon bricks, aluminum-carbon bricks, and Al2O3-SiC-C unburned bricks have led to the replacement of furnace linings of thermal equipment such as steelmaking converters, electric furnaces, and ladles, improving...
In a rotary kiln, ring masonry or staggered masonry can be used. Did you know? Of course, if you understand this method, you will know that the method we have used for a long time is the ring masonry method. If we use this method to make masonry, we will tell you about concrete masonry using this method. The construction of rotary kiln refractory bricks is divided into three points: 1. Arch method, 2. Support method, 3. Pasting method. 1. Arch method: The characteristic of the arch frame method is that the brick-laying machine can be used to lay bricks at one time without rotating the kiln body. When using the arch method to lay bricks, attention should be paid to: the arch frame is installed firmly, all parts are tightly connected, the operating function is good, the pushing device is flexible, the bracket is easy to move, the pneumatic or hydraulic system is sensitive, the pipeline is smooth and free of blockage, the arch frame moves smoothly and accurately, and strict compliance Baseline construction. 2. Support method: The characteristics of the support method are the top support method is generally used for bricklaying in small and medium-sized rotary kilns...
The process of shaping clay into a body or product of a certain size, shape, and strength with the help of external forces and models is called shaping. There are many methods for forming refractory materials, which are generally divided into three types according to the moisture content of the billet. Semi-dry method: the moisture content of the blank is about 5% Plastic method: the moisture content of the blank is about 15% Grouting method: The moisture content of the steel billet is about 40% In addition, there are vibration molding, 500~1500℃ hot pressing, and isostatic pressing molding. 1. Grouting method The grouting molding method injects a slurry with a moisture content of about 40% into a water-absorbing model (usually a gypsum type). The plaster mold absorbs the slurry moisture and forms a mud film on the surface. When the mud film reaches a certain thickness requirement over time, pour out the excess mud and leave it for some time. When the green body reaches a certain strength, it is demoulded, dried, damaged, and then sent to the next process. This method is mainly used to produce thin-walled hollow high-end products and special products, such as thermowell, high-temperature furnace tubes,...
At present, clay products in my country generally use semi-dry pressing. Therefore, the moisture content of the billet is low. If the kiln has a drying section, it can be fired directly into the kiln without pre-drying. Drying medium inlet temperature: 150~200℃ (standard bricks and ordinary bricks), 120~160℃ (special-shaped bricks) Exhaust temperature: 70~80℃ The residual moisture of the brick is less than 2% Drying time: 16~24 hours It should be pointed out that although the moisture content of semi-dry pressed bricks is low, for special types of large hand-made plastic-shaped bricks, due to difficulty in drainage, to prevent cracking due to excessive drying, the bricks should generally be dried in the air first. After drying for about a week, it is sent to the dryer or directly into the kiln to fire single bricks according to the complexity of the shape. During the firing process of clay products, under high temperatures and a suitable atmosphere, the brick body undergoes a series of physical and chemical changes. The heating characteristics of clay directly affect the determination of the firing system of clay products. Physical and chemical reactions occur when the bonded clay is heated, which promotes the destruction and sintering of...
The process of producing semi-silica bricks by Xinhongji Refractory can be divided into two types: fired and unfired. Unfired bricks are mainly made of sodium silicate as a binder. The production processes of fired bricks and clay products are roughly the same, but they also have their characteristics, mainly reflected in the following points. 1. Whether to add clinker is determined based on the raw materials’ characteristics and the product’s usage requirements. Siliceous clay has a small sintering shrinkage and no clinker is used. To improve the thermal shock resistance of semi-silica bricks, 10 to 20% clinker should be added. 2. If there are few fusible materials in the raw material and the quartz particles are coarse, the semi-silica brick will have low density and poor strength, but it will have good thermal shock performance and high load softening temperature; otherwise, the product will have poor fire resistance and thermal shock resistance. Therefore, the addition of quartz sand or siliceous clinker should be determined according to the use conditions of the product. Determine whether to add granular material or fine particle material. 3. When the temperature is lower than 1250°C, the volume shrinkage of semi-silica bricks is not obvious, and...
Under the premise of continuous improvement of production technology, today, refractory bricks with a good reputation and good quality are becoming more and more perfect in terms of variety and characteristics. Through a more comprehensive inspection and combined with the introduction during use, Xinhongji Refractory, which specializes in the production of refractory bricks, believes that modern high-end refractory bricks have the following characteristics. 1. Stronger chemical stability Cheap and environmentally friendly Xinhongji Refractory pays great attention to the chemical composition of refractory bricks during the production process, especially in optimizing the composition, and tries to start from the perspective of high-temperature resistance. Therefore, at present, the chemical stability of refractory bricks produced by Xinhongji Refractory has been qualitatively improved, and they can play a better role in more chemical production. 2. More resistant to external pressure Xinhongji Refractory found through relevant instrument testing that by optimizing production and constantly combining new processes to complete refractory bricks, their ability to resist external interference is also constantly improving, especially the compressive strength, flexural strength, linear change rate, and wear resistance. Better improvement, so that external influencing factors are continuously reduced. Refractory bricks with relatively stable quality have also given Xinhongji Refractory a...
Xinhongji Refractory describes two production methods of molten refractory materials: cast refractory products and sintered electric fusion products. Cast refractory products refer to products in which the batch of refractory materials is melted at high temperatures and then cast into a certain shape using the melting method. There are two methods of batch smelting, electrofusion and thermite. At present, the electrofusion method is the main method for producing cast refractory materials. Refractory product pouring process: raw material preparation → processing → batching → mixing processing → smelting → casting → heat treatment → mechanical processing. There are many types of fused-cast refractory products, among which fused-cast zirconium corundum bricks are the most widely used. Other foundry products include mullite bricks, zirconium mullite bricks, corundum bricks, quartz, magnesia, spinel and olivine. Compared with sintered products, fused-cast products have the following characteristics: in most cases, the products are dense, with fewer pores and high density; high mechanical strength (several times greater than sintered products); high-temperature structural strength; high thermal conductivity and good slag resistance. Al-Si-Zr melt-cast products are mainly used in the molten pool of glass melting furnaces, especially in the areas near the upper pool wall and feed inlet where corrosion...
This article introduces the characteristics of magnesia bricks and magnesia-silicate bricks, the alkaline refractory products of Henan refractory brick manufacturers. From the perspective of organic chemical properties, they are alkaline raw materials and have strong corrosion resistance to alkali residues. Therefore, this product is generally used in many basic steelmaking charges. Nonferrous metal plate smelting, industrial copper smelting, urban, lead smelting blast furnace, backlight furnace, and other products. With the development of the steel industry and the improvement of smelting standards, basic refractory insulation materials will gradually increase. Magnesia bricks are the most important product among alkaline refractory insulation materials. They have high flame retardancy and good resistance to iron oxide, alkali slag, and high calcium flux. Magnesia bricks are divided into calcined magnesia bricks and non-calcined magnesia bricks. The firing process of magnesia bricks is the same as that of other insulation bricks, but the firing temperature of magnesia bricks is higher than other bricks, generally 1550-1600℃, and the firing temperature of high-purity products is above 1750℃. The CaO content in magnesite is high, and sealing bricks are needed to eliminate the hazards of CaO and improve its formation characteristics. The processing technology of non-calcined magnesia bricks is similar...
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