Improvement measures of extending the service life of steel taps of converter

 

Improvement measures of extending the service life of steel tap hole of converter

1.The life of the skateboard is relatively low.

At present, the material of the domestic converter skateboard is mostly aluminum-zirconium carbon. As the material of the ladle skateboard, it has high strength, good thermal shock resistance, and excellent erosion resistance and corrosion resistance; But for the converter skateboard to block slag technically, the service life of the skateboard is relatively low.

2. The life of the tap hole needs to be further improved.

The life of the tap hole is one of the important indicators of the converter sliding plate slag blocking technology. The tapping is caused by the frequent direct erosion and violent erosion of high temperature molten steel and high oxidizing slag, and the effect of rapid cold and hot heat. The mouth is easily damaged. The length of its life directly affects the converter smelting cycle, steelmaking productivity and slag retaining effect, which in turn affects the quality of steel. The integrity of the tap hole directly controls the amount of slag in the converter, and has a direct impact on the alloy yield and the next refining process (LF, RH, etc.)

3.Improve and optimize the material and structure of the skateboard to greatly increase the service life.

Aiming at the general problems existing in the material of converter skateboards, improving the overall performance of the skateboards such as oxidation resistance, wear resistance, thermal shock stability, corrosion resistance, etc., The aluminum-zirconium-carbon body composite zirconium inlay ring technology is used to make the skateboard integrated. The service life is greatly increased, greatly reducing the labor intensity of workers, and providing a strong guarantee for the implementation of the fast-paced steelmaking process of the converter in the steel plant.

4.Measures to improve the overall life of the tapping port.

During the converter tapping process, the molten steel passes through the tapping port to the ladle. The refractory material of the tapping port is gradually melted under the washing of the high-temperature flowing molten steel, making the inner hole of the tapping port appear "inverted horn (" The upper mouth is small and the lower mouth is large)” reaming. Since the tapping hole is assembled by the set brick and the end brick (C brick) as a whole.

Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc.

Article Source:Improvement measures of extending the service life of steel tap hole of converter

Company name ：Luoyang Wanhao New Material Co., Ltd.

More Refractory Products: http://www.wanhaorefractory.com/en/product.html

Website: http://www.wanhaorefractory.com/


 

 

评论

发表评论

此博客中的热门博文

Advantages and disadvantages of fire clay brick

图片
According to production process, fire clay brick is divided into machine made brick and handmade brick. According to structures, fire clay brick is divided into solid brick and hollow brick, and hollow brick can be divided into load-bearing brick and nonbearing brick. Fire clay brick is made at different shapes according to different using requirements. Advantages of fire clay brick： 1. Fire clay brick is environmentally friendly and belongs to resource recycling bricks, so we can rest assured use fire clay brick. Fire clay bricks won’t be harmful to our health. 2.Fire clay brick has advantages of fireproof and heat insulation. Used clay brick can be used as concrete so that to save a lot of resources. 3.The price of fire clay brick is not as expensive as that of other fire bricks. Light weight brick is more expensive than fire clay brick. Besides, fire clay brick is very cheap and very durable 4. Fire clay brick has good moisture-proof function, it also has the a...
阅读全文

Installation of ladle slide gate and nozzle

图片
1.Before installing the upper steel ladle, first check the use of the water block brick. When the pit or crack occurs, use the repair refractory material to repair it, and then proceed to the next step. 2. Take the water pipe test, check the gap between the nozzle brick and the brick and the positioning of the nozzle brick. It is forbidden to manually remove the head of the water inlet and install it. 3. After checking the appropriate, remove the nozzle brick and apply refractory mud evenly on the outer wall of the upper nozzle brick. The thickness of the refractory mud is controlled at about 10mm (according to the actual clearance). When the gap between the nozzle and the brick is large, the asbestos cloth can be used. The head of the nozzle is evenly wound separately. 4. When installing the water inlet, the nozzle brick should be smoothly fed into the brick. During operation, avoid the gap in the lower part of the nozzle brick. 5. The water inlet must be re...
阅读全文

Blast furnace accident: six reasons for the freezing of the hearth

图片
1. The furnace is out of order. In many cases, the blast furnace condition is abnormal due to poor quality of the raw fuel or improper basic operating system. 2. Operational errors The prelude to the freezing of the hearth is the furnace cool. It is normal for the blast furnace temperature to fluctuate within a certain range, and the cool furnace that causes the hearth to freeze is often caused by improper operation. 3.A large amount of cooling water leaks into the hearth. 4. Long-term rest or sealing furnace Long-term rest is a common cause of freezing of the hearth even if there is no water leakage from the cooling equipment. 5. Equipment accident If the test is not enough before the start of the furnace, it will often cause equipment accidents. 6. The quality of raw fuel deteriorates. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, bla...
阅读全文