refractory brick for sale are protected by the masonry and only one side is exposed to the chemical attack. Load is higher than on the overhung zones, but temperature is lower. Periclase based refractories, mullite and sillimanite bricks are suitable for this application.
Characteristics of this area are: high load, low temperature and a reduced chemical attack. Basic materials with 90-92 percent MgO, mullite, sillimanite and 44 per cent Al2O3 “super duty” are suitable for this application.
The internal separation walls are insulating castable fully immersed in the high temperature environment and therefore the operating conditions are severe. They must resist loading at high temperature, and thus they must have high values of refractoriness under load and therefore high creep resistance.
Basic materials are suitable within the temperature limits indicated in the top zone (1,460-1,480°C), while different grades of mullite according to the different zones of the separation wall can be used.
In the glass furnace, walls of the regenerators are used to limit thermal losses. The main operating factors to be considered are temperature, repeated temperature cycling, airborne particulates, volatiles and load. Fuel and glass composition must also be considered when deriving the refractory specifications.
The walls in four zones as with checkers are subjected to different conditions:
1) Top zone: from the crown skewbacks to one meter under first row of checkers;
2) Mid zone: from the end of the top zone to 1,000°C;
3) Condensation zone: from 1,000°C to 700°C;
4) Lower zone: from 700°C to the Bottom.
The operating conditions are the same as for the crown but with minor load. Low iron basic refractories with a high periclase content and high grade mullite (95-97 percent mullite) are suitable for this area. As far as basic refractories are concerned the operating temperature must be under 1,500°C (1,460-1,480°C) to avoid creep.
Provided the target wall is exposed to the same conditions as the other top zone walls, then the refractory material will be as for the rest of the top zone. However, in the event the target wall is subject to excessive waste gas impingement then fused cast AZS block is recommended.
Checkers protect the mid zone wall. Temperature and load are lower compared to the top area, thus basic ladle refractory refractories with 95 per cent MgO or a good mullite are suitable for this area.
refractory company Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.
http://www.yilongrefractory.com/AllProductServlet?id=1&number=20
2016年5月23日星期一
How To Judge The Quality Of Fire Clay Brick
tundish castable moisture absorption. Therefore, it is widely used in
industrial production. The scrap bricks can be reused as aggregate.
Fire clay brick accounts for an tundish slag dam important position in the refractory industry. The most important feature of fire clay brick is that the raw materials can be obtainded locally.
When purchasing fire clay bricks, magnesia carbon brick some professional knowledge is needed and some principles should be followed.
1)Take your need into account, such as specifications and materials.
2)Select appropriate manufacturers. Shop around and capare the price before you buy. Also pay attention to the credibility of manufacturers, after sales service, product quality
and service attitude.
3)After selecting a manufaturer, slide gate fire clay give a visit to the factory to understand the strength of manufacturers, scale, production qualification, production capacity and evaluation on
the product from other customers.
4)Pay attention to the proper refractory castable use of fire clay brick in the production and the implementation of safety measures so as to make full use of fire clay brick, reduce unnecessary
losses, extend the service life ansd reduce the cost.
Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.
industrial production. The scrap bricks can be reused as aggregate.
Fire clay brick accounts for an tundish slag dam important position in the refractory industry. The most important feature of fire clay brick is that the raw materials can be obtainded locally.
When purchasing fire clay bricks, magnesia carbon brick some professional knowledge is needed and some principles should be followed.
1)Take your need into account, such as specifications and materials.
2)Select appropriate manufacturers. Shop around and capare the price before you buy. Also pay attention to the credibility of manufacturers, after sales service, product quality
and service attitude.
3)After selecting a manufaturer, slide gate fire clay give a visit to the factory to understand the strength of manufacturers, scale, production qualification, production capacity and evaluation on
the product from other customers.
4)Pay attention to the proper refractory castable use of fire clay brick in the production and the implementation of safety measures so as to make full use of fire clay brick, reduce unnecessary
losses, extend the service life ansd reduce the cost.
Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.
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