Development of ladle lining refractory materials

20th Century 50--70 years, China's steel plants mainly used aluminosilicate refractory materials, including clay, alumina brick and so on. Since the 1980s, China has successively developed the aluminum-magnesium carbon, coal quality calcium and magnesium and other several series of new steel package refractories. Wherein the aluminum-magnesium carbon refractory materials are of varieties, all specifications, is China's major ladle refractories.
In earliest 20th Century 50--60 years, a variety of clay bricks were mainly used in our country. Due to low cost, until the 1980s, some steel plants were using clay bricks as ladle lining material. Although clay brick is no longer used as ladle material so far, it had made a great countribution for recovery and future development of China's steel industry in the early days.

With the continuous development of steelmaking technology, steel quatity and quantity, clay bricks was no longer used because of short service life. Some of our mills started using a variety of high alumina bricks as ladle lining material, in which way the ladle life got a greatly improvement.

With the continuous improvement of steelmaking technology, high aluminum ramming mass, wax brick, alumina magnesia, aluminum-magnesium casting material, aluminum-magnesium unfired brick, aluminum-magnesium spinel castable, aluminum MgO-C, magnesium aluminate spinel brick, aluminum-magnesium unfired brick and a series of high-grade refractory materials appeared to adapt to higher demand.

Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.

Article Source:Development of ladle lining refractory materials
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Repair of converter lining

The repair of converter lining is the key measurement for prolonging lining service life, balance lining damage and lowering cost. The following matters should be paid attention to:
1.In the total comsuption of lining refractory material, the resonable ratio of repairing material should be 1/3 to 1/2.
2.Choose suitable repairing method. The most common repairing methods are: throwing, Semi-dry gunning and flame gunning.
3.Choose suitable repairing material.
4.Use slag splashing technique to prolong the service life of converter lining.
Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.
Article Source：Repair of converter lining
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Remarks for the installing of tundish exchangeable nozzle

1.All the bolts should be smeared with high temperature butter when mounting sliding mechanism, or it will be difficult to fasten. It is also helpful for dismounting.
2.When installing upper nozzle, the clamping ring surface should be smered with a layer of graphite to make it easier for dismounting. Use upper nozzles set rule to fix the position of argon blowing hole.
3.The lower bulgy surface of upper nozzle which will be in touch with submerged entry nozzle should be 2~3mm after the upper nozzles is fixed, which also should be adjusted to make sure the allowance around is even.
Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.
Article Source:Remarks for the installing of tundish exchangeable nozzle
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Requirements on gunning mix used in convertor

1.Refractoriness of ladle gunning mix should be high enough to withstand the high temperature effects in the convertor;
2.Gunning mix should be able to adhere onto the lining material, rebounce and drop should be as few as possible;
3.The adhered layer of gunning mix should be able to be sintered and integrated with the lining refractory material and with enough strength;
4.Gunning mix should be able to endure the erosion of slag, molten steel, furnace gas and steam of metallic oxide;
5.Linear expansion and shrinkage of gunning mix should be as small as possible, better close to zero, or stress could occur, which will cause spalling;
6.Gunning mix should be able to flow smoothly within the gunning machine and hose.

Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.
Article Source:Requirements on gunning mix used in convertor
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/