Boiler burner band main properties of refractory material should have included slag resistance, high strength, wear resistance, thermal stability, thermal conductivity and other properties. The traditional refractory belt mainly used chrome refractory ramming material, but because of the domestic high quality chrome resource scarcity, therefore is the main use of silicon carbide ramming material, silicon carbide high alumina coating material, high aluminum phosphate can be plastic, high temperature expansion plastic.
Of which the first two kinds of materials of high prices, but the long service life, good performance, and then two kinds of material price is low, but performance in general, and short service life. Therefore in the cyclone furnace liquid slag furnace and should not be used in high phosphate refractory plastic or ramming material, to avoid peeling or cracks in use in the production, so as to enhance the slag resistance of material and reduce the repair frequency.
High-temperature micro expansion refractory plastic and super 3000 water clay refractory performance fairly, has shown some advantages in the application to the wall pipe and boiler furnace top. But this kind of material in its solidification time is long, easy to dry shrinkage crack, thus for the construction and maintenance of a great deal of trouble. At the same time the supplier quality there is a certain fluctuation, sometimes refractoriness and normal temperature strength of less than 1580 degrees and 981N/cm2.
Carburant
- Name:
Carburant
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Products Id:
a69
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Advantage:
Less impurity content, recovery carbon stable with obvious effects, fixed C can be more than 93%
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Delivery Time:
30-60 Days
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Products Used:
Composed
of compound mullite, the bricks are processed through moulding under
high pressure and sintering at high temperature, with Features of strong
strength, steady bulk at high temperature and small creep rate, which
are available for hot blast stove of large and middle size.
Made by using sintered alumina and mullite as raw material, add in some
of the carbon matrix components and anti-oxidant(such as aluminum,
silicon metal, SiC, B4C, Mg-B and so on), adding binder pitch or
phenolic resin mixed with coal Nerishige type, fired in a reducing
atmosphere to form alumina oxide carbon refractories sliding gate
plate.Slide plates fired at high temperatures cover Al2O3-C based,
Al2O3-ZrO2-C based and MgO-spinel based,
Our company supports the customer in flow control offering a range of
ladle slide gate products. We have a wide range of refractory materials
for achieving consistent and reliable high performance in all areas of
slide gate applications. Balanced refractory life of plates, nozzles and
well blocks enables a cost-effective operation
Resin bonded carbon magnetite brick because of its good thermal shock resistance and slag resistance of iron and steel industry, in particular applied basic oxygen furnace and electric arc furnace. Carbon has excellent performance such as high thermal conductivity, low thermal expansion coefficient, high heat shock stability, at the same time and wettability of the job of slag has good corrosion resistance and anti erosion ability. As is known to all, the brick body carbon easy oxidation, which restrict its use in high temperature, the oxidation of carbon from the beginning of the 300 DEG C, with the increase of temperature oxidation speed.
Ceramic materials (SiC, carbon silicon oxide) do coating in the flake graphite or carbon fiber, were impregnated with phosphate, cement foam board price and the use of surface glaze etc... These expensive methods used in the refractory brick have certain limitations, another method is through the steam treatment of fine particle boron, TiB2, ZrB2 and SiC and other materials to do thermal barrier coating on graphite or carbon composite material.
A common method of refractory brick is to add fine-grained antioxidant materials, such as in MgO C SiC, B4C, brick added metal Al, Mg and (or) Si to prevent or limit carbon at high temperatures (> 1400 C) oxidation. Also, these additives are expensive, and can not completely prevent the oxidation of carbon at low temperature. Coating solution by liquid mixing 60% solid and 40% made, wherein the liquid binder is phosphoric acid and ethanol (liquid solution 30%) mixture. The outer coating brush MgO C brick thickness is about 0.8mm, the sample coating drying at room temperature is about 10min. In practice, the ladle after 5h pre heated to 1200 DEG C, because of some difficulties in the process of steel-making and sometimes need a longer time.
Metering nozzle
The
Zr metering nozzle manufactured by this company is specially used for
the tundish gating system without plug stick in the small square-base
continuous casting machine, and it is more suitable for multi-thread and
small square-base continuous casting machine. All nozzles adopt
special-type and high-quality refined raw materials with reasonable
structure and strong erosion resistance. In the entire course of
pouring, there is little change in diameter of the nozzle with stable
speed. Nozzles of the mosaic type, combined type and entire difference
type can also be provided as required by customers.
Composed
of compound mullite, the bricks are processed through moulding under
high pressure and sintering at high temperature, with Features of strong
strength, steady bulk at high temperature and small creep rate, which
are available for hot blast stove of large and middle size.
