Anchor Brick for Heating Furnace---Refractory Brick---Refractory Material---Changxing Refractory

Anchor Brick for Heating Furnace

The qualified of anchor brick is similar to the material of furnace lining castables and formed by preeing and being fired at high temperature. Characterized by good thermal shock resistance and high strength, it is used for several heating furnace and has good effect.

Introduction, Advantages, Application:

The qualified of anchor brick is similar to the material of furnace lining castables and formed by preeing and being fired at high temperature. Characterized by good thermal shock resistance and high strength, it is used for several heating furnace and has good effect.

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New type of high alumina brick lead smelting furnace in different parts of which use

Lead smelting of lead sulfide concentrate, usually contain a certain amount of Zn, in the smelting process is also the oxidation of ZnS, while part of the reduction, part of the re-oxidation into the lead-rich slag, part of the form of steam into the flue gas, With the flue gas rising again in the process of secondary air oxidation, or contact with other elements after oxidation, while the flue gas contains large amounts of SO2 gas and high oxygen partial pressure. In the melt contains a lot of PbO and metal Pb, along with other normal slag composition, that is, FeO, CaO, SiO2, Fe3O4 and other impurities.

Melt a large number of PbO and Pb are low melting point material, in the 1000-1150 ℃ melting temperature, have good mobility and penetration, it is easy to penetrate into the cracks within the refractory brick. Pb infiltration into the brick body gap, the oxygen is oxidized into PbO, the volume will increase about 20%, which will greatly fill the gap of high alumina brick.

In addition, during the use of high-alumina bricks, the melt penetrates into the high-alumina bricks along the capillary channels such as pores and cracks, and interacts with it to form a metamorphic layer different from the original Clay, High Alumina insulating bricks. When the furnace temperature Fluctuations, the metamorphic layer will crack, peeling, melt deeper into the brick, the thicker the metamorphic layer, the thicker peeling structure. If the local oxygen potential in the furnace is high, it is easy to reoxidize the Cr2O3 in the local high alumina brick, and Cr3 + is oxidized to cr6 +, so that PbO reacts with CrO3 due to the strong basicity, and low PbO · CrO3 is formed, Anti - scouring performance of Bottom Frame &Skid Platform Brick for Heating Furnace.

At the same time, and the formation of high alumina brick Cr2O3 and other substances are a lso low melting point material, is not conducive to the formation of high melting point solid phase material. ZN vapor in the flue gas, if combined with Fe2O3 in the high-alumina refractory brick for sale, is reduced to a low-melting FeO phase and Zn is oxidized to ZnO, the volume of ZnO will be expanded by 5-6 times, In the infiltration of parts of the expansion effect. SO2 components within the flue gas, etc. on the composition of high alumina brick also has a certain chemical effect.

The characteristics of these slag and flue gas characteristics of high-alumina smelting furnace metallurgical furnace use has special requirements.

Bottom Frame &Skid Platform Brick for Heating Furnace---Refractory Brick---Refractory Material---Changxing Refractory

Bottom Frame &Skid Platform Brick for Heating Furnace

Introduction, Advantages, Application:

Skid and platform brick are with brown corundum and high grade bauxite as raw materials, using low cement technology and additive. Casting moulding and baking at low temperature, or casting on-site are both available. Characterized by high strength, water and corrosion resistance, they are used for isothermal bed and furnace doorframe of continuous heating furnace and have good effect.

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Tundish Well Block---Refractory Brick---Refractory Material---Changxing Refractory

Tundish Well Block

Introduction:
Changxing Refractory supplies refractory nozzles in a number of different compositions to best suit the operating conditions of steel ladle. Nozzles are available in alumina qualities (with and without carbon additions, zirconia additions, and/or chrome additions) to best resist the slag chemistry. Nozzles are either pressed or pre-cast depending on the composition.

Advantages:
1. These shapes can be pre-fired if necessary to ensure optimum performance.
2. These pieces are custom designed for a specific ladle with attention to total life, free open performance and cost.

Application:
1. Suitable for well block of tundish nozzle under different process conditions
2. Can be assort with billet nozzle. changer, common metering nozzle stopper for slab and slide plate

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Ladle Permeable Well Block---Refractory Brick---Refractory Material---Changxing Refractory

Ladle Permeable Well Block

Introduction:
Made from high-purity, high-density, high-strength materials and MAS matrix-optimized system, shaped by pressing, prefabrication and vibration. With subtle formula design, unique technical process, they have, which identified up to the leading domestic level and received recognition and praise.

Advantages:
1. Good corrosion/erosion resistance 2. High temperature performance 3. Longer service life 4. Stable structure 5. Thermal shock resistance

Application:
They suit specially for large-sized refining ladles

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Ladle Permeable Brick---Refractory Brick---Refractory Material---Changxing Refractory

Ladle Permeable Brick

Ladle permeable is also called ladle purge plug or brick. Adopting tabular alumina, emery, chromium oxide green and magnesia alumina spinel as main raw materials, using cement as binder. 

Ladle purge plug is used for ladle bottom blowing.

Introduction:
Ladle permeable is also called ladle purge plug or brick. Adopting tabular alumina, emery, chromium oxide green and magnesia alumina spinel as main raw materials,using cement as binder. Numerous designs are available based around high purity refractory materials. They can be designed and produced types of straight hole, directional slit, directional labyrinth, girth shape and interior and exterior integral split etc according to users requirement. With precisely formed slot/channel for the optimum gas flow rates and stirring efficiency

Advantages:
1. Stable structure 2. Consistent quality 3. Strong corrosion resistance 4. Long service life 5. High air permeability 6. Reliable gas flow performance

Application:
Ladle purge plug is used for ladle bottom blowing.

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Refractory brick and clay fire brick distinction

refractory brick and fireclay refractories distinction
Clay refractory bricks are a kind of refractory bricks, the precise definition of refractory products are shaped, from the delivery form of distinction is a series of refractories.

Refractories are divided into ordinary refractories (1580 ~ 1770 ℃), advanced refractories (1770 ~ 2000 ℃) and special refractories (2000 ℃ above); according to the chemical characteristics of acid refractories, Neutral refractories and refractories. In addition, there are special occasions for the refractory material.

Now the definition of refractory, has not only depends on whether the refractoriness of 1580 ℃ or more. refractory brick for sale refers to the current application of metallurgical, petrochemical, cement, ceramics and other production equipment lining the inorganic non-metallic materials.

Acid refractories to silicon oxide (SiO2) as the main component, commonly used silica brick and clay brick. Silica brick is more than 93% SiO2 silica products, the use of raw materials are silica, waste silica brick. Silica brick acid-resistant slag erosion ability, but susceptible to the erosion of slag, and its load softening temperature is high, close to its refractoriness, after repeated calcination volume does not shrink, or even a slight expansion, but the thermal shock resistance is poor. Silica brick is mainly used for coke oven, glass furnace, acid furnace and other thermal equipment, silica brick in accordance with the SiO2 content and physical and chemical indicators can be divided into several levels, mainly divided into glass kiln silica brick and coke oven silicon Brick two categories. Clay brick or refractory clay clinker as the main raw material, containing 30% to 46% of alumina, refractoriness 1580 ~ 1770 ℃, is a weak acid refractory, good thermal shock resistance, acid slag corrosion resistance , Widely used in clay bricks to refractory clay as the main raw material is called ordinary clay bricks to coke gem clinker as the main raw material made of porosity was 17% below the clay brick known as low porosity clay brick. Two kinds of clay brick and according to which the physical and chemical indicators are divided into several grades, ordinary clay brick and low porosity clay brick between the price difference.

Neutral refractories to alumina, chromium oxide, silicon carbide or carbon as the main component. Neutral Refractory company in the main products are: corundum bricks, high alumina bricks, silicon Mo brick, mullite bricks, aluminum chrome bricks, aluminum carbon brick, graphite or carbon brick. High alumina products in the main crystalline phase is mullite and corundum, corundum content increases with increasing alumina content, alumina containing 95% of the corundum products is a wide range of high-quality refractory material containing alumina 95% of the corundum products is a wider use of high-quality refractories. The chrome brick with chromium oxide as the main component has good corrosion resistance to steel slag, but the thermal shock resistance is poor and the softening degree is low. High alumina bricks of the indicators are relatively good, with good cost-effective, so widely used, but because of high alumina brick erosion resistance is poor, it can not be applied to the key conditions of complex conditions, silicon brick is the use of aluminum Bauxite and silicon carbide as the main raw materials, mainly used in the transition zone of cement rotary kiln.

Carbon refractories are carbon brick, graphite products and silicon carbide products. Carbon products is another kind of neutral refractory material, which is divided into three categories: carbon brick, graphite product and silicon carbide based on the composition of carbonaceous material and the mineral composition of products. Carbon brick is a high-grade petroleum coke as raw material, plus tar, asphalt binder, at 1300 ℃ isolated from the firing of air conditions. Graphite products (except natural graphite) with carbonaceous materials in the electric furnace in 2500 ~ 2800 ° C in the graphite system in the system. Silicon carbide products are silicon carbide as raw materials, plus clay, silica and other binder in 1350 ~ 1400 ℃ firing. Silicon carbide plus silicon powder can also be made in the electric furnace nitrogen atmosphere under silicon nitride - silicon carbide products. Carbon products, low thermal expansion coefficient, high thermal conductivity, good thermal shock resistance, high temperature strength. Long-term use at high temperatures do not soften, from any acid erosion, a good salt resistance, not by the metal and slag wetting, light weight, high-quality high-temperature materials. Disadvantage is easily oxidized at high temperatures, should not be used in the oxidizing atmosphere. Carbon products are widely used in high-temperature furnace lining (bottom, hearth, lower furnace, etc.), melting non-ferrous metal furnace lining. Graphite products can do the reaction tank and petrochemical autoclave lining. Silicon carbide and graphite products can also be made of melting copper alloy and light alloy crucible. Carbon brick and graphite products, the main component of carbon (C), the thermal expansion coefficient is very low, high thermal conductivity, good thermal shock resistance, high temperature strength, acid and salt erosion, especially weak acid has good resistance , Free from metal and slag wetting, light, generally used in iron and steel smelting industry, but also for petroleum, chemical industry, autoclave lining. Silicon carbide is an excellent refractory, good corrosion resistance, but at high temperatures (more than 1400 degrees) is easy to oxidize, not suitable for use in the oxidizing atmosphere.

The main refractory products are magnesia and oxygen. The main products include magnesia brick, magnesia-chrome brick, Spinel brick and so on. Magnesia (MgO) more than 80% of the fire brick called magnesium bricks, according to the index can be divided into many grades of grades, magnesium bricks on the slag and iron slag has a good resistance, refractoriness than clay brick and silica brick high. Mainly used for open hearth, oxygen blowing converter, electric furnace, non-ferrous metal smelting equipment and glass industry and some high-temperature equipment. Magnesia-chrome brick on the resistance of the slag stronger, and the thermal shock stability is also much higher than the magnesium brick, so the application of more extensive, magnesia-chrome brick in the iron and steel smelting and non-ferrous metal smelting industry has almost replaced magnesium brick, Because of its chromium oxide (Cr2O3) can continue to spread, the magnesia-chrome brick can be easily linked to the kiln skin, so in the last 30 years, has been the first choice for cement kiln firing refractories, magnesia chrome brick Cr2O3 Will react with water, trivalent chromium can become hexavalent chromium, will cause pollution of water, is facing the trend of gradually withdraw from the cement industry market. Magnesia-alumina brick using magnesia and alumina as raw materials, compared with magnesia brick, its thermal shock stability and high temperature creep performance is better, use the site and almost the same as magnesium bricks. Dolomite brick and magnesium calcium brick performance is almost the same, dolomite brick to dolomite as raw materials, magnesium calcium bricks to synthetic magnesium calcium sand as raw materials, oxygen content is generally 15-30%, the remaining components are mainly magnesium oxide, with The role of purification of molten steel, generally only for the special steel smelting, magnesium calcium brick production process is more complex, easy to hydration and decomposition of water and steam, not easy to transport, the use of the process must be prepared to prevent work. Manganese iron spinel brick is a new product, mainly used for cement rotary kiln firing zone and transition zone, will be the cement industry alternative to magnesia chrome brick main products.

Refractory materials such as carbides, nitrides, borides, silicides and sulphides, such as alumina, lanthanum oxide, beryllium oxide, oxygen, zirconia and the like, are used in special applications. (Silicon carbide, titanium carbide, tantalum carbide, etc.), nitrides (boron nitride, silicon nitride and the like), borides (borides (borides), and the like); refractory materials having a melting point of 2050 to 3050C or higher; Zirconium, titanium boride, hafnium boride, etc.), silicides (such as molybdenum disilicide), and sulfides (thorium sulfide, cerium sulfide, etc.). Their melting point for the 2000 ~ 3887 ℃, of which the most refractory is the carbide. High temperature composites such as metal ceramics, high temperature inorganic coatings and fiber reinforced ceramics.

Special materials are often used AZS brick (ie, zirconia corundum brick), corundum brick, direct combination of magnesia-chrome brick, silicon carbide brick, silicon nitride bonded silicon carbide brick, nitride, silicide, sulfide, boride, carbonation And other non-oxide refractory materials; oxygen, chromium oxide, aluminum oxide, magnesium oxide, beryllium oxide, and other refractories. Commonly used insulation refractory products are diatomite, asbestos products, such as insulation boards. Refractory refractory materials are often used in refractory castables, refractory mud, refractory ramming material, refractory plastic, fill charge, refractory gunning materials, refractory materials, refractory coatings, lightweight refractory castable, gun mud and so on.

Ladle Nozzle Well Block---Refractory Brick---Refractory Material---Changxing Refractory

Ladle Nozzle Well Block

The series of well blocks for nozzles are made from high-purity, high-density, high-strength materials. Based on different materials, they have corundum, magnesia carbon and alumina spinel carbon.

It is mainly used to fix upper nozzle in steelmaking.

Introduction:
The series of well blocks for nozzles are made from high-purity, high-density, high-strength materials. Based on different materials, they have corundum, magnesia carbon and alumina spinel carbon.

Advantages:
They show the features of stable structure, excellent thermal shock resistance, good corrosion/erosion resistance and long service life.

Application:
It is mainly used to fix upper nozzle in steelmaking.

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Low Carbon Brick and Carbon-free Brick---Refractory Brick---Refractory Material---Changxing Refractory

Low Carbon Brick and Carbon-free Brick

Low carbon magnesia carbon brick are used for ladle slag line. Low carbon and carbon-free corundum spinel bricks are used for ladle lining and bottom.It can realize ladle low carbon and carbon-free to meet the needs of high grade and ultra-clean steel. 

Introduction,Advantages and Application:

Low carbon magnesia carbon brick using with crystal magnesite, fused corundum, fused spinel, high purity and ultrafine graphite and nano composite antioxidant as raw materials, which are used for ladle slag line. Low carbon and carbon-free corundum spinel bricks are used for ladle lining and bottom. It can realize ladle low carbon and carbon-free to meet the needs of high grade and ultra-clean steel. The products are characterized by corrosion resistance, penetration resistance, erosion resistance, spalling resistance and good integrity, to meet the need of complete refining ladle. It is the leading level in the domestic.

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Ladle Magnesia Carbon Brick---Refractory Brick---Refractory Material---Changxing Refractory

Ladle Magnesia Carbon Brick

Introduction:
Magnesia Alumina Carbon Brick is formulated for ladle linings and is manufactured with very high purity electro fused Magnesia, high purity Graphite, Alumina and Antioxidants

Advantages:
High purity Alumina and Magnesia thermal shock properties. It has the performance between magnesia carbon brick and alumina magnesia carbon brick

Application:
They are used in Ladle linings, ladle upper and lower slag line, ladle wall and ladle bottom

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