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Refractory materials generally refers to the degree of fire in the 1580 C or more inorganic non-metallic materials, including natural ore (refractory raw materials) and according to a certain purpose and requirements, according to a certain process to produce a variety of products (fire resistance), with a certain degree of high temperature mechanical properties and good volume stability. Refractory materials are steel, nonferrous metals, petrochemical, building materials, machinery, electric power, environmental protection and even national defense and other important basic materials, but also a variety of high temperature industrial furnaces and equipment indispensable support materials. Technological progress of refractory materials plays an important role in the development of high temperature industry. Type of refractory material: 1.Acidic refractory material usually refers to SiO2 content of more than 93% of the refractory materials. Its major characteristicis that it can resist the erosion of acidic slag at high temperature, but easy to react with basic slag. Acid refractory materials commonly used silica brick and clay brick. 2.Basic refractory material generally refers to Magnesium Oxide or Magnesium Oxide and calcium oxide as the main component of refractory materials. This kinds of refractory material has higher refractoriness, and it can resist basic slag. 3.Alumina silicate refractory is the refractory material which is mainly composed of SiO2 - Al2O3, according to the content of its Al2O3 can be divided into semi-siliceous (Al2O3 15 ~ 30%), clay (Al2O3 30 ~ 48%), high Aluminum (Al2O3 greater than 48%) 4.The fused cast refractory is a refractory product with a certain shape, which is melted by a certain method to melt the batch at high temperature. 5.Neutral refractory is refractory material which is not easy to react with acid or basic slag at high temperature. Such as carbon refractory and chrome refractory. Some of these materials are also attributed to this kind of Neutral refractory. 6.Special refractories are new inorganic non-metallic materials developed on the basis of traditional ceramics and general refractory materials. 7.Unshaped refractory is a mixture of refractory aggregate and powder, binder or other admixture, which can be used directly or after proper liquid mixing. Article source: http://www.chinafirebrick.com/Company_News_125.html
uring continuous casting, the casting powder is mostly used (together with submerge nozzle) except from casting billets with small section. Practice has proved that this process is one of the important conditions to ensure the quality and normal operation of casting billet. In the early 1970s, the process was successfully applied to slab continuous casting in our country and solved the problem of slab longitudinal crack, and then was gradually popularized and applied. In recent years, a series of protective slag has been established, Some special fluxes for continuous casting of special steel are developed, which provide necessary conditions for further development of continuous casting in China. There have many kinds of refractory products in our factory. Function of mold fluxes: 1 Insulation 2 Isolating air and preventing molten steel from oxidizing two times 3 Purify the slag interface and absorb the inclusions in molten steel 4 Lubrication shell and improve the heat transfer of solidification Article source: uring continuous casting, the casting powder is mostly used (together with submerge nozzle) except from casting billets with small section. Practice has proved that this process is one of the important conditions to ensure the quality and normal operation of casting billet. In the early 1970s, the process was successfully applied to slab continuous casting in our country and solved the problem of slab longitudinal crack, and then was gradually popularized and applied. In recent years, a series of protective slag has been established, Some special fluxes for continuous casting of special steel are developed, which provide necessary conditions for further development of continuous casting in China. There have many kinds of refractory products in our factory. Function of mold fluxes: 1 Insulation 2 Isolating air and preventing molten steel from oxidizing two times 3 Purify the slag interface and absorb the inclusions in molten steel 4 Lubrication shell and improve the heat transfer of solidification Article source: http://www.wanhaorefractory.com/en/new/The-applicaion-of-casting-powder.html
uring continuous casting, the casting powder is mostly used (together with submerge nozzle) except from casting billets with small section. Practice has proved that this process is one of the important conditions to ensure the quality and normal operation of casting billet. In the early 1970s, the process was successfully applied to slab continuous casting in our country and solved the problem of slab longitudinal crack, and then was gradually popularized and applied. In recent years, a series of protective slag has been established, Some special fluxes for continuous casting of special steel are developed, which provide necessary conditions for further development of continuous casting in China. There have many kinds of refractory products in our factory. Function of mold fluxes: 1 Insulation 2 Isolating air and preventing molten steel from oxidizing two times 3 Purify the slag interface and absorb the inclusions in molten steel 4 Lubrication shell and improve the heat transfer of solidification Article source: uring continuous casting, the casting powder is mostly used (together with submerge nozzle) except from casting billets with small section. Practice has proved that this process is one of the important conditions to ensure the quality and normal operation of casting billet. In the early 1970s, the process was successfully applied to slab continuous casting in our country and solved the problem of slab longitudinal crack, and then was gradually popularized and applied. In recent years, a series of protective slag has been established, Some special fluxes for continuous casting of special steel are developed, which provide necessary conditions for further development of continuous casting in China. There have many kinds of refractory products in our factory. Function of mold fluxes: 1 Insulation 2 Isolating air and preventing molten steel from oxidizing two times 3 Purify the slag interface and absorb the inclusions in molten steel 4 Lubrication shell and improve the heat transfer of solidification Article source: http://www.wanhaorefractory.com/en/new/The-applicaion-of-casting-powder.html
First, refractory production continued to decline. The refractory production in 2016 continued the downward trend in 2015, a decrease of 8.56%. The main reason for the decline in refractory production is the rapid and drastic reduction in the market demand for refractory materials for infrastructure projects. ?From the output of different refractory products, silicon brick production decreased the most, as high as 37.59%; high alumina products and clay products were down more than 10%. Second, the export trade situation is grim. In 2016, the total export volume of refractory raw materials and products fell to its lowest level in the past five years, only 2.565 billion USD, down 11.62%, and a decrease of 765 million USD from the 3.33 billion USD, the highest point in 2014, down 22.97%. Third, the imports of refractory raw materials have increased. In 2016, the total imports amount of refractory raw materials and products is 324,900 tons, an increase of 17.54%. The amount of refractory raw materials is 305,800 tons, an increase of 17.78%; the amount of refractory products is 19,100 tons, an increase of 13.92%. Article source: The Characteristics of Refractory Industry
First, refractory production continued to decline. The refractory production in 2016 continued the downward trend in 2015, a decrease of 8.56%. The main reason for the decline in refractory production is the rapid and drastic reduction in the market demand for refractory materials for infrastructure projects. ?From the output of different refractory products, silicon brick production decreased the most, as high as 37.59%; high alumina products and clay products were down more than 10%. Second, the export trade situation is grim. In 2016, the total export volume of refractory raw materials and products fell to its lowest level in the past five years, only 2.565 billion USD, down 11.62%, and a decrease of 765 million USD from the 3.33 billion USD, the highest point in 2014, down 22.97%. Third, the imports of refractory raw materials have increased. In 2016, the total imports amount of refractory raw materials and products is 324,900 tons, an increase of 17.54%. The amount of refractory raw materials is 305,800 tons, an increase of 17.78%; the amount of refractory products is 19,100 tons, an increase of 13.92%. Article source: The Characteristics of Refractory Industry
Tips in the use of ladle steel flow initiator: 1. Due to the ladle steel flow initiator in the ladle nozzle for a long time high temperature state, requiring a high degree of refractory sintering. 2. Due to ladle steel flow initiator filled into the outlet directly after contact with molten steel, the initial sintering temperature should not be too high. 3. Ladle steel flow initiator in the use of the process to withstand the large static pressure of molten steel, in order to prevent the collapse of the material, requiring raw materials with very good mobility, ladle steel flow initiator particles between the friction should be as low as possible. 4. Under the action of high temperature, control the appropriate drainage of raw materials, the volume effect of raw materials to prevent the use of the process in the production of ladle steel flow initiator can not automatically fall or can not effectively support the upper material. The article source: http://www.chinafirebrick.com/Company_News_121.html
Tips in the use of ladle steel flow initiator: 1. Due to the ladle steel flow initiator in the ladle nozzle for a long time high temperature state, requiring a high degree of refractory sintering. 2. Due to ladle steel flow initiator filled into the outlet directly after contact with molten steel, the initial sintering temperature should not be too high. 3. Ladle steel flow initiator in the use of the process to withstand the large static pressure of molten steel, in order to prevent the collapse of the material, requiring raw materials with very good mobility, ladle steel flow initiator particles between the friction should be as low as possible. 4. Under the action of high temperature, control the appropriate drainage of raw materials, the volume effect of raw materials to prevent the use of the process in the production of ladle steel flow initiator can not automatically fall or can not effectively support the upper material. The article source: http://www.chinafirebrick.com/Company_News_121.html
Chromite ore fines has good increasing friction effect in low and high temperature, plays a dual role too. Added to rubber can play a good role of increasing friction, and do not scratch the duality and noise. In the friction material commonly used in chromite fines Cr203, content of 25%-40%, the higher Cr203 content, increasing friction effect is bigger. Use should pay attention to controlling the amount and particle size. Proper dosage should not exceed 7%, particle fineness more than 200 projects. Excessive dosage and coarse grain size can improve the friction coefficient but also will cause friction increases obviously. The basic direction of the development of refractory fire brick technology is based on independent innovation as the basic starting point, take the refractory material design and application of scientific, production, application of fine and green, consumption reduction and resource conservation of the integration of the road to promote research and development On a new level. The innovative direction of the refractory for the cement industry is chrome-free and energy-saving. There have many kinds of refractory products in our factory. Such as fire brick ,magnesia carbon brick, refractory raw material, refractory nozzle and other refractory products. When you want to know more kinds of refractory products, welcome to view our factory anytime. The article source: http://www.chinafirebrick.com/Company_News_120.html Chromite Sand
The future expansion of cement kilns in refractory materials can benefit from the promotion of similar energy conservation policies in the cement kiln, developed by the magnesium aluminum spinel, mafic spinel and mafic aluminum spinel brick in large new dry cement Brick kiln sintering belt and transition zone used to meet or exceed the magnesium chrome brick life, can replace magnesium chrome brick, significantly reduced the chromium pollution. In the increasingly scarce national resources today, the new green and energy saving has become the purpose of the development of refractories. At present, Europe, Japan, the United States and other countries and regions due to government regulations, has been basically no chromium refractories, the use of green refractory has become an inevitable trend.There have many kinds of refractory products. Such as fire brick for sale, refractory nozzle, refractory raw material and other refractory products. Should focus from the big, small start, face the reality, have focused, vigorously promote the user side, the production side, the R & D side, the design side of the co-operation and coordination. As a business, should strengthen cooperation with scientific research institutions and user units, increase production and research cooperation efforts, in the green refractory technology to achieve new breakthroughs. China's refractory industry, the overall level of development from the advanced green there is a certain distance. Green refractories have attracted the attention of refractories and related industries. Relevant government departments and trade associations have also developed corresponding policies and measures to encourage and promote the fire-resistant green work. China Refractories Association also believes that the second five during the development of refractory materials will show new features, its basis is to improve product quality and application level, the focus is to increase or strengthen the new content, that is, energy saving and low carbon. The basic direction of the development of refractory fire brick technology is based on independent innovation as the basic starting point, take the refractory material design and application of scientific, production, application of fine and green, consumption reduction and resource conservation of the integration of the road to promote research and development On a new level. The innovative direction of the refractory for the cement industry is chrome-free and energy-saving. For the understanding of green refractory materials and behavior, should be under the guidance of the concept of systematic, balanced. For the refractory industry, should be from the preparation of raw materials to the production, construction, application and post-processing in all aspects of scientific and systematic considerations, to avoid thinking and vision confined to a point or face and trade-off. Strengthen the energy-saving emission reduction, the development of green, low-carbon refractory products, is the global green economic strategy on the refractory industry's fundamental requirements. To further promote the refractory industry, technological innovation, product structure adjustment and application of technology to enhance and vigorously develop longevity energy-saving, environmentally friendly new type of green refractory products, refractory materials industry has become a megatrends. There have many kinds of refractory products in our factory.Such as fire brick ,magnesia carbon brick, refractory raw material, refractory nozzle and other refractory products. More refractory news: http://www.chinafirebrick.com/company_news.html
Compared with shaped refractory material, and unshaped refractory material have many advantages. For example, easy manufacturing process, short manufacturing period, saving energy, good integrity when using, widely application, and convenient for installation. Though all with same shape, unshaped refractory products have different type. Generally, it is divided into following types: 1. According to porosity, there are compact unshaped material and insulating unshaped material.Compact unshaped material is common product. While insulating unshaped material is light weight castable, which is made according to ISO1927-75 standard. After frying, whose porosity cannot less than 45%. 2. According to different binder, castable is divided into two big molds, which are Inorganic binder castable and organic binder castable. According to Hardening mode , there are air hardening castable, hydraulicity castable, hot hardness castable and others kinds castable. 3. According to Construction characteristics, there are refractory castable, gunning mix, plastic castable, ramming mass, coating material , refractory mortar, vibration material and others. Even with same specification, different function with different manufacturing method, if you need this kind products, please confirm application in advance. Welcome to view our website to know more kinds of refractory products. Such as fire brick for sale, refractory nozzle, refractory raw material and Magnesia Carbon Brick. Welcome to view our factory to know more details about refractory products. Article source: http://www.chinafirebrick.com/Company_News_117.html
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