The reasons of ladle upper nozzle damage and its reventive measures

Ladle nozzle is widely used in steel plant.

1. The reasons of ladle upper nozzle damage
1) Under the scouring and erosion of liquid steel and steel slag, the slag erosion will occur under wrong operation process.
2) Mechanical damage during installation process.

2. To prevent the damages of sliding gate nozzle system, measures should be taken as below:
1) Use better raw material with high corrosion and erosion resistantance to make the upper nozzle, such as

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Article source:

http://www.yilongrefractory.com/news/The%20reasons%20of%20ladle%20upper%20nozzle%20damage%20and%20its%20reventive%20measures.html

The reasons that the damage of ladle upper nozzle and its reventive measures

Ladle nozzle is widely used in steel plant.

1. The reasons that the damage of ladle upper nozzle
1) Under the scouring and erosion of liquid steel and steel slag, the slag erosion will occur under wrong operation process.
2) Mechanical damage during installation process.
2. To prevent the damages of refractory material sliding gate nozzle system, measures should be taken as below:

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Article source:
http://www.yilongrefractory.com/news/The%20reasons%20that%20the%20damage%20of%20ladle%20upper%20nozzle%20and%20its%20reventive%20measures.html

The reasons that the damage of ladle upper nozzle and its reventive measures

Ladle Nozzle is made from corundum, bauxite, flake graphite, antioxidant and phenolic resin formed on heavy duty presses in harden steel or carbide die by using white fused alumina. To obtain maximum packing density, nozzles are fired at extremely high temperature in order to increase corrosion resistance to metal and slag the fired nozzles are further processed.

1. The reasons that the damage of ladle upper nozzle
1) Under the scouring and erosion of liquid steel and steel slag, the slag erosion will occur under wrong operation process.
2) Mechanical damage during installation process.

2. To prevent the damages of refractory material sliding gate nozzle system, measures should be taken as below:
1) Use better raw material with high corrosion and erosion resistantance to make the upper nozzle, such as the corundum quality upper nozzle.
2) Choose to use products with high mechanical strength.
3) Note the operations of ladle casting process, to avoid the discharge of slag.

Article sourse:

http://www.yilongrefractory.com/news/The%20reasons%20that%20the%20damage%20of%20ladle%20upper%20nozzle%20and%20its%20reventive%20measures.html

Damage situation and its causes of firebrick

With the industry firebrick using time longer, refractory bricks will be damaged, and the damage mechanism can be divided into physical damage, chemical damage and mechanical damage. Luoyang Yilong Refractory Co., Ltd. Produced various refractory products, has a professional technical staff, based on our years of experience summed up the causes of various damages, can be summarized as follows.

1. Physical damage

Physical damage mainly refers to the high-temperature damage to the refractory brick; the cause of the damage can be divided into follows:

The intrinsic quality of refractory brick: high temperature resistance of the refractory brick, which is refractory brick refractoriness, refractoriness under load.

A) The reason of the process: The kiln crust thickness and the firm degree. Refractory brick kiln firing without skin protection, its service life is certainly short. The kiln skin erosion thin can be divided into operational reasons, reasons and technical reasons ingredients.

B) Operational reasons: The refractory nozzle position, the flame shape and the manipulation. The fire nozzle position bias lining erosion, flame kiln skin, make the skin thin flame kiln corrosion; stocky, scour kiln skin, make skin corrosion damage of refractory brick kiln thin, unstable operation, make the kiln peel off frequently, damage of refractory brick kiln; temperature is too high, the damage of refractory brick kiln crust, damage.

C) Ingredients cause: Batching scheme unreasonable, such as the KH value is too high, the amount of liquid phase is too low, not easy to hang kiln skin, also can damage the refractory brick.

D) Process: Mainly kiln mouth before the knot ring, so that timely discharge of materials not in the kiln, the abrasion function make kiln crust thinning damage of refractory brick.

2. Chemical damage

Chemical damage mainly refers to the kiln feed in R2O; etch S fusible substances on the refractory brick and damage of firebrick. But if the kiln skin firm and compact, and to resist easy melt material erosion of refractory brick damage.

3. Mechanical damage

Mainly refers to the period in the kiln is mechanical damage of refractory brick, brick and kiln relative displacement generated irregular, damage caused by shear stress generated by the firebrick. Phenomenon of kiln is running after a period of time, twisted slit brick. Cause mechanical damage associated with refractory brick size error and quality of masonry.

Have a clear understanding of the causes of various damages, we can take measures so that the losses to the minimum, thus a lot of cost saving in our production.