The selection or refractory material for silicon package

refractory

At present, the most common silicon package is a ton of garden cone silicon package, the diameter of 1.2-1.5 meters, the mouth diameter of about meters.

Although this silicon package with refractory material is not much, but it is very particular about. General silicon package with two castables, one is silicon package with corundum refractory castable, used in the silicon package pouring hole site. One is the silicon package with high-performance castable, used in the package along the silicon package parts.
Silicon package pouring hole, high temperature, impact larger. Optional silicon package special corundum castable, this castable has excellent high temperature performance, and anti-erosion, high temperature state volume stability, when used in silicon package can be cast with corundum castable prefabricated parts (prefabricated general mouth Diameter of 250-300cm height, the mouth diameter of about 150cm. Park cone). This easy to use excellent construction.
Silicon package with high-performance castable silicon package castable silicon package corundum castable 1 ton of silicon package refractory
Silicon cladding is made of refractory alumina brick, refractory brick suppliers thickness of about 150cm. The total weight of about 1 ton.
Silicon package along the 10-15 cm at the silicon package with high castable, high-performance castable wear resistance, thermal shock, high strength, heat resistance and strong features, so the package along the edge of high performance Casting material, but also cheap, extremely reasonable.
Although the small package of silicon material is small, but very particular about, such as the wrong choice of refractory brick manufacturers. It is a waste of materials, a waste of costs. Therefore, the choice of materials, it is recommended or use the above materials as well. In this way, that is economical and practical.


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Performance and application of paraffin refractories

refractories

Paraffin brick products contain a certain amount of acidic substances (quartz variants), semi-acidic, high temperature performance and clay products similar. Wax stone refractory brick manufacturers in addition to the fire resistance of high quality clay brick low (fluctuations in 1670 ~ 1710 ℃), the other indicators can meet the national standards of clay brick. In particular, as the use of the temperature of the most valuable reference to the load softening start temperature, wax stone brick for the 1300 ~ 1430 ℃, significantly higher than the clay refractory brick suppliers. Therefore, where the clay refractory brick china, you can use wax stone brick to replace.
The biggest feature of wax stone products is the use of a slight expansion, is conducive to maintaining the integrity of the masonry, can reduce the slag on the erosion of the joints. In addition, the slag and refractory brick surface contact, can be formed in the refractory materials for sale brick surface 1 ~ 2mm thick viscosity of the large enamel (SiO2 content of the higher silicate melt), can prevent the slag to the brick infiltration , Thereby improving the product's anti-slag erosion ability.


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Refractory materials for induction furnaces

Refractory materials

Refractory materials for induction furnaces:
The furnace lining is usually made of clay brick or ternary high alumina brick masonry. The bottom of the furnace is sometimes the first high-alumina refractory castable watering grass, and then in the high aluminum brick. When the induction furnace capacity is less than 10t, the lining can be made of high alumina refractory castable or refractory ramming material with about Al2O3 content of about 75%. It can also be made of corundum refractory castable or dry vibration material. Stove sensor coil around the lining, the general use of corundum refractory castable as a whole watering or vibration with dry vibration compact. As the type of raw materials and operating conditions are different, the furnace life is also different, the general furnace age of 0.5 to 4 years. In the use of the coil around the coil and other vulnerable parts should be carried out 1 to 5 times minor repair.
Insulation materials for holding furnaces and aluminum tanks:
Aluminum insulation furnace is divided into slot induction furnace, resistance heating pool furnace and gas furnace furnace. The working temperature of such equipment due to lower operating temperature, generally with clay refractory brick and other materials for the lining, also obtained a higher service life.
Refractory material for rotary drums:
The non-working layer of the drum is made of clay or heat-resistant brick or floating brick masonry, and can also be made of lightweight refractory castable with a bulk density of 1.0g / cm3 or made of prefabricated masonry. The working layer is made of dense clay refractory bricks or Al2O3 content of more than 55% of high alumina refractory masonry. Rotor furnace furnace age is generally 300 ~ 500 furnace times. When the addition of salt solvent smelting aluminum, due to increased chemical erosion, the furnace age has decreased.

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Refractory definition

Refractory material

Refractory material refer to inorganic nonmetallic materials with a refractoriness of not less than 1580 ° C.
Refractory materials are generally made of natural minerals and rocks of aluminum silicate as the main refractory raw material. Its basic processes and certain basic characteristics are similar to those of other products of the silicate system. Therefore, refractories are listed as one of the silicate systems Product and important part of the silicate industry. Refractory product same to cement, ceramics, glass and other silicate industry has a very important position and role in the national economy.
Because it has a special performance of resistance to high temperature  in the thermal equipment, then it occupies a very important position in the development of modern industry. With the discovery and need of science and technology, the use of refractory materials for furnace is expanding, from metallurgy (including steel and nonferrous metallurgy, etc.), silicate (cement, ceramics, etc.), chemical, power, machinery and other industries, extended to everything High-temperature operation of the industrial and mining enterprises, the kiln (combustion kiln, molten pool, fire, crucible) and other heat parts of thermal equipment, refractories are indispensable important building structural materials. In the field of cutting-edge science (such as rockets, atomic reactors, etc.) is also an indispensable high temperature resistant materials or parts.
As the refractory material used in a variety of different heating conditions of high temperature equipment, it is subject to high temperature and other different conditions, by the complex physical and chemical reactions and damage. Therefore, the refractory material must have the following important performance.
1.Refractory material is not easy to melt when in the case of high temperature
The working temperature of modern industrial kiln furnace is generally between 1000 ~ 1800 ℃, therefore the refractory for sale material must first be not easy to melt in this temperature.
2.Refractory material does not soften when in the case of high temperature pressure
The melting temperature of Most refractory material more than 1650 ~ 1700 ℃, but it reached the melting temperature before the deformation (softening), loss of structural strength, so the refractory material supply not only have a high melting temperature, but also with high temperature Under the conditions of the load does not occur deformation performance.
3.Volume stability in high temperature environment
Refractory materials used in high temperature conditions, due to physical and chemical reactions within the material and make the volume changes. Most of this change in refractory material is volume shrinkage, and a few are inflated. Whether it is volume shrinkage or expansion, such as beyond a certain range can cause damage to the furnace. So the refractory material is required to have good high temperature volumetric stability.
4.Refractory product can resist the sudden change and uneven heating of temperature to avoid damage to the furnace
In the intermittent operation of the kiln, the high temperature, the rapid changes in the various parts of the masonry heat uneven, brick body will produce stress inside the material cracking, resulting in furnace damage. So the refractory material should be able to withstand the rapid changes in furnace temperature and fluctuations do not crack the performance of thermal stability.
5.Refractory can resist the erosion of slag when in the case of high temperature
in the use of the process, due to disguised contact with fuel ash, molten slag and molten metal and other effects were eroded. Therefore, the refractory material should have the ability to resist this erosion. In the use of refractory materials, according to the main requirements of the use of various refractory materials and have the characteristics of a reasonable choice.

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Refractory definition

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