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Chrome corundum refractory bricks, also known as high wear-resistant chrome corundum tapping channel bricks, are high-end products that Xinhongji Refractory has introduced to the market for many years. It is made of pure alumina Al2O3 and chromium oxide Cr2O3 as the main raw materials. Compared with pure corundum bricks, it has more functions, such as fire resistance, load softening deformation temperature, flexural strength, high-temperature creep, high-temperature volume stability, and corrosion resistance. It is mainly used for slide rails, tapping channels, and bevels of steel rolling heating furnaces, which are easy to wear in industrial furnaces. Chrome corundum brick is a refractory material used in many rolling mills with a service life of 10 to 18 months. Application of chrome corundum brick 1. When used in the steel industry, the service life of chrome corundum bricks is more than twice that of corundum materials, such as breathable ladle bricks. ; The wear resistance and corrosion resistance of chrome corundum bricks used in the non-ferrous metal smelting industry are obviously better than other bricks. 2. For the carbon black industry, the service life of chrome corundum bricks used by Guangdong Maoming Carbon Black Factory is twice that of corundum bricks used under...
Regenerative ball is a kind of spherical regenerator. It has the advantages of good thermal shock stability, large heat storage, high strength, easy cleaning, and reusability. It is widely used in blast furnace smelting, and it can improve the utilization efficiency of heat energy. , to reduce energy consumption, so regenerative balls are often used in the recovery of waste heat in blast furnace smelting. The main function of the high alumina regenerative ball is to support and cover the catalyst in the reactor. It can buffer the influence of liquid and gas on the catalyst. Many small balls divide the airflow into small streams. When the airflow flows through the heat conductor, it forms a strong turbulent flow and breaks through the boundary layer on the surface of the heat conductor. The diameter of the ball is very small. , small conduction radius, small thermal resistance, high density, and good thermal conductivity, so it can meet the requirements of frequent and rapid reversing of the heat conduction burner, thereby improving the distribution of liquid and gas in the reactor, so it is widely used in steel, treatment Gold industry heating furnace, forging furnace and other industrial furnaces. It is...
The melting furnace usually refers to the machine side furnace, which is placed next to the casting equipment to melt the alloy ingot and keep it warm, and the capacity is not more than 500 kg. Abbreviation for “fire nozzle”. Usually refers to the body part of the combustion device, which has a fuel inlet, air inlet, and ejection holes, which play the role of distributing fuel and combustion-supporting air and ejecting them in a certain way before burning. So what castables are used for the melting furnace burner? First of all, the temperature of the flame emitted by the burner is very high, so when choosing refractory materials, it is necessary to meet the requirements of high-temperature resistance. Secondly, the burner is easily damaged by the continuous erosion of natural gas and air, so it must have high strength and erosion resistance, and finally, the thermal shock resistance, that is, the resistance to rapid cooling and rapid heating, must be good, because the burner is in the studio, and the thermal stress generated is strong and easy Make the burner bricks crack and peel off, shortening the service life. In order to meet the above working conditions, high-alumina steel...
Aluminum melting furnace is a kind of equipment used for melting and heat preservation of aluminum ingots. It can well meet the process of aluminum smelting. The furnace is composed of a melting furnace, crucible, heating element, furnace cover lifting mechanism, and electrical automatic temperature control. system etc. The temperature of the aluminum melting furnace during the smelting process is actually not high, but the activity of aluminum is very high after melting, and it is as pervasive as water, so this requires relatively high requirements for the refractory materials used in the construction process of the aluminum melting furnace. If the refractory material used in the casting process is not correct, it is easy to cause the structure of the refractory material to gradually loosen and peel off, and damage the refractory material; moreover, aluminum and its alloys are very easy to have physical and chemical reactions with impurities in the refractory material. Substances can affect the quality of aluminum products. So what are the refractory castables commonly used in the construction of aluminum melting furnaces? 1. Non-stick aluminum castable Non-stick aluminum castables are mainly new materials with low cement content and ultrafine powder combination based on high-purity mullite,...
The refractory ball is a kind of spherical refractory material made of industrial alumina and refractory kaolin after a certain scientific ratio and fired at high temperature. A kind of fire-resistant ball, which has the characteristics of high strength, high hardness, high wear resistance, etc., so what occasions are high-alumina fire-resistant balls generally used in, today Xinhongji Refractory will give you a brief introduction to the use of high-alumina fire-resistant balls. Refractory balls are divided into ordinary refractory balls and high-alumina refractory balls. Ordinary refractory balls are suitable for converters and converters in the sulfuric acid and fertilizer industries. High-alumina refractory balls are suitable for hot blast stoves and heating converters in urea, steel, and other industries. As a refractory material, high alumina refractory balls are widely used in ceramic firing, enamel firing, glass firing, chemical, and other factories due to their small size, high-temperature resistance, corrosion resistance, and pollution-free. They are mainly stacked in industrial kilns and can achieve the effect of heat storage. Due to the high-temperature resistance of the refractory ball, its highest refractory temperature can reach about 1900 degrees, so it is also especially suitable for high and low-temperature conversion furnaces, reformers, hydrogenation converters, desulfurization tanks...
High-alumina low-cement castable is a kind of refractory castable made of high-alumina bauxite clinker as aggregate, refractory clay as powder, adding aluminate cement and sodium tripolyphosphate according to the formula ratio. The cement content is less than 8%, which is a commonly used high alumina refractory castables for kiln lining. First. Physical and chemical indicators of high alumina and low cement pouring: Second, the characteristics of high-alumina low-cement castables: 1. Good shock resistance. High-aluminum low-cement castables have good shock resistance and can withstand the vibration and impact of equipment during operation. 2. It has good acid and alkali corrosion resistance. Because high alumina bauxite has good acid and alkali resistance, high alumina low cement castables have good acid and alkali resistance. 3. It has good wear resistance. High-aluminum low-cement castables have good wear resistance characteristics, so they can withstand impact and wear during equipment operation. 4. It has good temperature resistance. The refractoriness of high-alumina low-cement castables can reach about 1800 degrees Celsius. In view of some characteristics of high-alumina and low-cement castables, it is widely used in temperature equipment in metallurgy, the chemical industry, building materials, and other industries.
Silicon carbide bricks are one of the silicon carbide refractories. Silicon carbide bricks use silicon carbide as the main raw material. High-purity silicon carbide powder and high-activity silicon carbide are differentially mixed, and after grouting molding, they are vacuum sintered at high temperatures. High-grade refractory bricks for recrystallization. The main content of silicon carbide bricks is SiC, with a content of 72%-99%. Due to the different bonding methods of silicon carbide bricks, the industries and thermal equipment used are also different. Different bonding methods can be divided into clay bonding, sialon bonding, alumina bonding, self-bonding, high aluminum bonding, silicon nitride bonding, and so on. What are the uses of silicon carbide bricks? Where is the main application? Silicon carbide bricks are made of silicon carbide as the raw material. Silicon carbide, also known as emery, is made of quartz sand, coke, wood chips, and other raw materials through high-temperature smelting in an electric furnace. Silicon carbide is often used to make advanced refractory materials due to its stable chemical properties, high thermal conductivity, small thermal expansion coefficient, and good wear resistance. Silicon carbide bricks use the characteristics of silicon carbide, such as corrosion resistance, high-temperature resistance, high strength, good thermal...
High-alumina refractory bricks are generally refractory bricks with very high aluminum content. They are widely used in super-grade high-alumina bricks and are used in electric furnace roofs, blast furnaces, hot blast stoves, blast furnace hearths, blast furnaces, reverberatory furnaces, rotary kiln transition zones, Limekiln and other parts, generally speaking, high-alumina refractory bricks are divided into super-grade high-alumina bricks, first-grade high-alumina bricks, second-grade high-alumina bricks, and third-grade high-alumina bricks. The prices are also different. We look at the price of high-alumina refractory bricks from the grade. The price range generally ranges from a few yuan to hundreds. This price is also based on the aluminum content and weight, so the price range fluctuates relatively large, so In the process of purchasing, it is very important to look at the aluminum content and weight of high-alumina refractory bricks. Generally, when we use high-alumina refractory bricks, we also choose different grades of high-alumina refractory bricks according to different usage occasions. In this way, we can not only control the cost but also ensure the use requirements of the application environment. When customers purchase, first of all, It is necessary to provide refractory brick manufacturers with drawings of special-shaped bricks and communicate whether they...
Honeycomb ceramic regenerators are widely used in energy-saving technology of industrial thermal equipment, which can improve the efficiency of industrial thermal equipment, reduce energy consumption, increase productivity, and improve quality. It is an important and effective means to solve energy and environmental problems. The cross-sectional pores of the honeycomb ceramic regenerator mainly have two pore structures of a square and regular hexagon, and the channels are straight channel structures parallel to each other. This structure significantly reduces the resistance of the pores to flow through and greatly improves the heat storage body’s single-pore volume heat transfer efficiency. Product features of honeycomb ceramic regenerator The refractory honeycomb ceramic regenerator has the characteristics of low thermal expansion, large specific heat capacity, large specific surface area, small pressure drop, small thermal resistance, good thermal conductivity, and good thermal shock resistance; it is widely used in regenerative high-temperature combustion technology (HTAC) in the metallurgical machinery industry ), which organically combines the recovery of flue gas waste heat with high-efficiency combustion and reduction of NOX emissions, so as to achieve the goal of extreme energy saving and reduction of NOX emissions. Product function of honeycomb ceramic regenerator 1. There are various materials, and products of...
Non-stick Aluminum Castable FHA-80 Al2O3 80% Aluminum furnace refractory castable Bulk density g/cm3 ≥ 2.8 Compressive strength MPa, 110℃×24h 65 Flexural strength MPa, 1100℃×3h 85 Re-burning line change rate%, 1100°C×3h ±0.15 Operating temperature ℃ 1650 The castable is made of refractory materials such as mullite, bauxite, brown corundum, high-electric fused corundum, superfine powder technology, additives, and dispersion technology; the product has good construction flow performance and a smooth working surface; It has the characteristics of non-sticking aluminum, easy to clean, delaying the growth of corundum tumors, and not reacting with aluminum liquid. Applicable parts: aluminum smelting furnace, molten aluminum holding furnace, vacuum ladle, degassing box, front holding furnace of the die-casting machine, and other parts contacting molten aluminum. Product features: It has the functions of high volume density, high strength, easy cleaning and good thermal shock stability, corrosion resistance, erosion resistance, non-stick aluminum and slag, and prolongs the service life of the furnace lining. Storage method: The products are classified and stacked neatly, and there are obvious signs. It is strictly forbidden to be exposed to moisture, and moisture-proof measures should be taken. At the same time, the test should be carried out, and the test can only be used...
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