Refractory

Physical and chemical indexes: Item Unit Index Bulk density g/cm2 2.31-2.4 Water absorption % <0.5 Acid resistance % 99.8 Flexural strength Mpa 42 Crushing stength Mpa 120 Thermal stability 130°c-20°c No crackle after 3 times Chemical composition (%) SiO2 Al2O3 K2O Na2O CaO MgO Fe2O3 69.8 22.5 2.7 0.95 0.82 0.82 0.49 High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove is comparable to that of silica bricks, up to 1690~1730℃, but the softening temperature under load is more than 200℃ lower than that of silica bricks. In addition to the high refractory mullite crystals,High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove also contain nearly half of the low melting point amorphous glass phase. In the temperature range of 0~1000℃, the volume of High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove expands uniformly as the temperature rises. The linear expansion curve is approximately a straight line, and the linear expansion rate is 0.6%~0.7%, which is only about half of that of silica bricks. When the temperature reaches 1200 ℃ and then continue to rise, its volume will start to shrink from the maximum expansion. The residual shrinkage of High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove leads to the loosening of mortar joints in masonry, which is a major disadvantage of clay bricks. When the temperature exceeds 1200°C, the low melting point substances in the High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove gradually melt, and the particles are tightly pressed against each other due to surface tension, resulting in volume shrinkage. Production practice in China has proved that before crushing, high-aluminum clinker is strictly sorted and classified, and stored in tiers. The use of bauxite clinker and combined clay fin grinding method can improve product quality.

Silicious ramming material is made of high purity micro crystalline quartz sand, powder, adding high temperature sintering agent and mineralizing agent mixed into dry ramming material. As its proprietary design of granularity distribution, dense unshaped furnace lining can be obtained through a variety of knotting methods. Because the grain of quartz is small(the size of grain is 6µm-260µm), do not use H3BO3, as a result of the effect of mineralizer, the conversion rate of α- tridymite is high after sintering in the first oven, the furnace drying time is short, it has excellent volume stability, thermal shock stability and high temperature strength. In normal use, the backing keeps a certain loose layer.

The silicious refractory slurry produced by our company is made of natural high silica powder (SiO2 >99%) as the main raw material, its high silica powder has natural dispersion fineness, the addition of other auxiliary materials and special additives. Silicious Mortar Advantages 1. High adhesive strength. 2. High refractoriness. 3. Excellent refractoriness under load. 4. Good installation performance. Application for Silicious Mortar Silica mortar is mainly used for laying and repair of glass furnace, coke oven, hot blast stove and other masonry of high quality silica bricks industrial furnace. It can be used to build silica brick with plump ash joints, good air tightness, high bonding strength, excellent high temperature performance, low drying shrinkage, suitable construction time and so on.

Xuankun Silica sand is a hard, wear resistance, chemical stability silicate minerals, its main mineral composition is SiO2, color is white or colorless translucent, hardness 7, refractory is much more than 1750°C. Silica sand has high fireproof performance. Product Description 20 mesh Silica Sand 20 mesh Silica sand is mainly used in Glass making. Silica sand is a major ingredient in the production of glass making—in fact, silica is the primary component in standard glass products ranging from windows to beer bottles. The purity of the silica sand used plays a role in determining the color, strength and clarity of the final product.

Xuankun Silica sand is a hard, wear resistance, chemical stability silicate minerals, its main mineral composition is SiO2, color is white or colorless translucent, hardness 7, refractory is much more than 1750°C. Silica sand has high fireproof performance. Silica sand is prepared by crushing the selected nature silica into small particle size, it is also called silicon fine powder, it is widely used in concrete and refractory materials. Advantage for Silica Powder 1. High quality and purity, anti-corrosive, anti- acid. 2.Competitive price.We own two rich deposit silica mines with purity SiO2 content. 3.Various particle size meet your requirements. Silica Sand Application 1. It is used for high performance concrete, improve the strength of concrete, improve the performance and prolong the life of concrete. 2. Used in refractories, enhance fluidity, ruduce water consumption, improve product strength and durability. 3. It is used for dry powder mortar and grouting material to improve early strength. 4. It is used for wear-resistant floor, increasing the flow degree to improve corrosion resistance.

Silica bricks for coke oven are special bricks with complex types and sizes that used for coke oven and other thermal equipment with complex structures as refractory lining. Product Description What's coke oven bricks Silica Refractory Brick is short for silica brick, it belongs to acid refractory brick and is suitable for lining material of high temperature kiln with acid atmosphere or solution. It is a kind of quality refractory products with more than 94-96% SiO2 content. Silica Refractory Brick has excellent resistance to acid corrosion, excellent heat conductivity and high refractoriness. Silica bricks for coke oven is made of natural quartz stone with high SiO2 content (94%). Silica brick is used for coke oven's basic parts such as regenerator, chute, carbonization chamber, combustion chamber, coking chamber, furnace bottom and top, etc. The brick quality is one of the main factor that affect the service period of coke oven. With the enlargement of coke oven, the temperature in the main burning area has been rising, which requires higher quality bricks for oven.

Fused silica brick is also known as zero thermal expansion fused silica brick or thermal shock resistance silica brick. The main raw materials are amorphous fused silica. It's thermal expansion coefficient is near zero, so the product is also named zero thermal expansion silica brick. Zero expansion silica bricks is High thermal shock resistance and zero expansion silica bricks produced with fused silica as the main raw material, with resistance to thermal shock when warming up, high strength, low expansion rate, acid erosion resistance and many other advantages, it is the best choice for glass kiln as hot patching bricks. It is widely used in hot repair project on coke oven, glass furnace and hot blast stove. After hot repair, no crack and peeling, long service life, safe and reliable. Advantages for Fused Silica Brick 1. Longer service life, accurate size tolerance, pure color 2. Excellent thermal shock resistance, no need to shutdown the kiln when hot

Silica bricks for glass furnace refers to the silicon refractory product used in high temperature glass kiln(not contact with the glass liquid), it is a kind of acid refractory mainly made from tridymite, cristobalite, a small amount of residual quartz and glass phase. High quality silica bricks for glass furnace are characterized by high silica content and low melting index.The higher SiO2 content, the higher temperature silica bricks resist. Glass kiln silica brick has high temperature and volume stability, no pollution to glass liquid, chemical corrosion resistance, small bulk density, and can reduce the weight of furnace body. Advantages for Glass Furnaces Silica Bricks 1. Good stability under high temperature 2. RUL is 1680℃ 3. Good corrosion resistance of acid slag 4. No pollution to the glass liquid 5. Good heat resistance and long service life

Silica Brick for Hot Blast Stove Silica Refractory Brick is short for silica brick, it belongs to acid refractory brick and is suitable for lining material of high temperature kiln with acid atmosphere or solution. It is a kind of quality refractory products with more than 94-96% SiO2 content. Silica Refractory Brick has excellent resistance to acid corrosion, excellent heat conductivity and high refractoriness. Silica bricks for hot blast stove is made of natural quartz stone with high SiO2 content (95%). Silica brick is used for hot blast stove’s heat furnace body, furnace wall and roof. Advantages for Hot Blast Stove Silica Bricks 1. SiO2≧ 95%. 2. RUL is 1650℃ 3. Good corrosion resistance of acid slag 4. Good stability under the high temperature 5. True density 2.33g/cm³

Silica bricks for coke oven is made of natural quartz stone with high SiO2 content (94%). Silica brick is used for coke oven's basic parts such as regenerator, chute, carbonization chamber, combustion chamber, coking chamber, furnace bottom and top, etc. The brick quality is one of the main factor that affect the service period of coke oven. With the enlargement of coke oven, the temperature in the main burning area has been rising, which requires higher quality bricks for oven. Refractory coke oven bricks are coke oven bricks with tridymite as the main crystalline phase, used for building coke ovens. Modern coke ovens are large- scale heating equipment made of thousands of refractory materials and 10,000 tons of refractory materials. Silica brick for coke oven is a kind of siliceous refractory material, used to build coke oven with quartz crystal as the main phase. The modern silicate brick coke oven is a large-scale thermal equipment built with tens of thousands of tons of nearly 2,000 brick-like refractory materials, of which silica bricks account for 60% to 70% of the coke ovens. Coke oven silica bricks are used to build the regenerator wall, chute, combustion chamber, carbonization chamber and furnace roof of the coke oven. The service life of coke ovens is about 20-30, some of which can reach 45a. The quality of coke oven bricks is one of the factors that affect the service life of coke ovens. With the expansion of coke ovens, the temperature of the main combustion zone has been rising, which requires coke ovens to use higher quality coke oven bricks.

Silica sand is made of natural silica stone through the following production process: crushing, milling, flotation, purification, water treatment, etc. Its main mineral composition is SiO2, the content is up to 99%, semi white color or white color. Silica Powder Advantage 1.  High purity, anti-corrosive, anti- acid. 2.  Competitive price 3.  Size from 80mm to 325mesh size Application for Silica Powder Common use of silica powder is in Glass, refractory industry,ceramics industry and so on.

High purity graphite ring adopts high-purity graphite material, and is made by precision CMC equipment. It is the best choice for hot top casting, can meet the production of high value-added, high technical performance requirements.

Hot top casting cap is also called casting funnel. AdTech Casting Funnel uses high silicon melting 140 materials. It is the best choice for hot-top aluminum casting. It has high corrosion resistance, high geometric precision, smooth surface, long service life, low maintenance cost and non-pollution to molten aluminum. AdTech hot top casting cap can meet the high value-added, high-tech performance aluminum casting requirement.

Minimum Order: 1 bags

Alumina fiber flow box can control the flow of molten aluminum during foil casting. The flow control box uses high silicon melting materials. It has the features of nonstick molten aluminum and erosion resistance, which can maintain the stability of the internal layer. AdTech alumina fiber flow box is mainly used for high value-added micron foil and PS plate casting.

Minimum Order: 1 bags