China's refractory products
Release time:
2024-08-22 15:21
Based on the present, look to the future, the establishment of many varieties, different grades of refractory products.
1. Alkaline refractory series
According to China's national conditions and the geographical distribution of resources, the policy of magnesia-carbon brick and magnesia-limestone brick is adopted.
Magnesium carbon series: according to the conditions of use can be divided into a high strength, high carbon and other types. Mainly used for top-bottom combined blowing converter and high-power circuit,
Iron calcium carbon series: can be divided into tar combined limestone brick, tar combined limestone carbon brick and resin combined magnesium limestone carbon brick is mainly used for blowing converter
Magnesium inscription brick series: can be divided into general inscription brick, low silicon high load soft chromium brick, mainly used for large rotary kiln, furnace refining furnace.
Magnesia-aluminum brick series: it can be divided into general magnesia-aluminum brick and mid-range magnesia-aluminum brick (magnesia containing about 95% MgO). Mainly used for the top of the flat furnace.
2. High light refractory series
High alumina refractory series includes the following 2 series:
Carbon-bonded high aluminum series: it can be divided into aluminum carbon (such as long nozzle, immersion nozzle, overall plug rod, sliding plate, etc.), A1:0,-SCC Al21-S02-ZrO1-C character, which is mainly used for continuous casting, molten steel pretreatment, iron ditch, etc.
Mullite, sillimanite series: can be divided into high purity mullite brick, natural material generation mullite brick, sillimanite modified low ducking into high aluminum, etc., mainly used for electric furnace roof, hot blast stove, etc.
3. Silica refractory series
Silica refractory series contains high purity silica brick, high density silica brick, high iron silica brick, etc. Mainly used in coke oven, glass furnace hot blast stove, etc.
4. Non-oxide refractory series
The non-oxide refractory series consists of 2 series:
SiO refractory series: mainly used for blast furnace, non-ferrous metal treatment.
Carbonaceous refractory series can be divided into carbon bricks (including microporous carbon bricks), graphite silicon carbide bricks, graphite Gan disease, etc., mainly used in blast furnaces, calcium carbide furnaces, etc.
5. Unshaped refractory series
The monolithic refractory series consists of the following 2 series:
Castable series: can be divided into general (such as aluminum and magnesium castable), low cement, no cement, full dry test castable, etc. Mainly used for the iron ditch, the overall ladle, electric furnace top triangle area.
Spraying material series: mainly used for transfer and ladle.
6. Thermal insulation refractory series
The thermal insulation refractory series consists of the following 2 series:
Lightweight Brick Series: It can be made to stick light, high aluminum light, floating bead brick, heat insulation board, hollow ball products, etc.
Refractory fiber products series: can be divided into aluminum silicate fiber, high aluminum fiber, multi-product mullite fiber, polycrystalline alumina fiber, etc.
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Based on the present, look to the future, the establishment of many varieties, different grades of refractory products.
Manufacturing process of ceramic fiber
There are three methods for making ceramic fibers: the spinning method, the blowing method and the spinning method. The ceramic fiber in the ceramic fiber paper is commonly used in the blowing method. The wire blowing method is to spray the molten mixed raw materials to the peripheral surface of the high-speed disc in a trickle state under the pressure of a rare gas. Under the pulling force of the high-speed rotation of the disc, it is spun into filaments and coiled on the disc to obtain ceramic fibers of several microns.
