purging plug are high-end functional refractory materials that do not work continuously during the entire ladle turnover cycle, so different physical and chemical corrosion will occur at different times. Damage to purging plug can be divided into the following categories: 1.Oxygen purging effect From the completion of tapping the ladle to the next steel connection, …
During our visits to many steel companies around the world, we found that some of them focus too much on the service life of ladle slide gate plate and lower nozzle, some even ask for more than 10 heats, here are some of our opinions on this condition: 1.Longer service life slide gate plate and …
The discussion on ladle slide gate plate and lower nozzle Read More »
The ladle slide gate plate system consists of ladle well brick, upper nozzle, upper slide gate plate, lower slide gate plate, lower nozzle, and sliding gate mechanism, the structure of which is shown in Figure. 1.The working principle of the sliding gate plate is to make the upper and lower slide gate plate casting holes …
How to solve the sliding gate plate leakage of steel Read More »
Ladle purging plug play an important role in the process of molten steel refining. As a refractory product, there will be consumption and damage during use. If the use method is not properly grasped, it will affect normal production and even cause serious production accidents such as steel breakout. The purging plug is located at …
It can be seen from the process flow chart that the production process of magnesium carbon bricks is not complicated, but to produce high-quality products, each process must be strictly monitored, including mixing, moulding, heat treatment (drying) of these links is particularly important in the production of the place. 1.Breaking and crushing Broken crushing is …
The process of magnesium carbon brick production Read More »
Magnesium carbon brick is a new type of refractory material emerged in the 1970s, it is high temperature sintered magnesium sand or electrofused magnesium sand and carbonaceous materials as raw materials, with a variety of carbonaceous bonding agent made of non-burning refractories, magnesium carbon brick that maintains the advantages of carbonaceous refractory materials, and at …
Application of magnesium carbon bricks in the iron and steel metallurgy industry Read More »
For refractory brick, we may not feel strange. With the progress of society, the application of refractory brick is more and more widely. Refractory brick appear collapse phenomenon in the actual using, so what causes it; Following refractory factory is simple to give you introduced the refractory bricks collapse reason: 1. Red hot refractory brick …
The reasons of refractory brick collapse in using process Read More »
In the ladle, due to the complex physical and chemical environment at the slag line, the furnace lining is the most vulnerable to damage. The chemical attack of steel slag on magnesia-carbon bricks is mainly through the dissolution of magnesia and the oxidation of graphite in the fire brick body. Under the combined action of …
Only refractory materials with the following two characteristics can be used as the lining of the VOD furnace: 1) It can resist the erosion of high-temperature slag; 2) It has excellent resistance to spalling in a sudden cold and hot environment. At present, the refractory materials used in VOD furnaces are generally magnesia dolomite bricks …
Selection of refractory material for VOD ladle lining Read More »
With the reform and improvement of continuous casting technology and functional refractories, the most commonly used in our country is the zirconium sizing nozzle. According to the content of zirconia in the sizing nozzle, the zirconium sizing nozzle can be divided into ordinary type sizing water and zirconia type sizing water are two categories, ordinary …
Ferroalloy electric furnace furnaces, especially cold stamped paste villages, when the knotting quality does not meet the required requirements, and the oven lining time and heating rate are not closely controlled during baking, the baking quality of the furnace village will not be achieved. To normal production requirements. According to the reasons for the damage …
Main measures to prolong the life of ferroalloy furnace lining Read More »
Long nozzle are subject to complex environmental conditions in the course of their use. Both to face the instantaneous heat brought about by thermal stress and mechanical stress caused by neck fracture or port longitudinal cracking, but also to face the slag on the impregnated parts of the erosion; Not only to face the neck …
The three main causes of damage at the long nozzle Read More »
Steel mill ladle is the role of the converter smelting steel transportation to the continuous casting, in the continuous casting ladle rotary table above, 1500 ℃ high temperature steel through the bottom of the ladle nozzle, slide out to the tundish, billet transit suspension, and ultimately from the tundish nozzle to the continuous casting of …
In the traditional production process of ductile cast iron, about 10% of carbon scrap is generally used for dosing. This paper only deals with the production of ductile iron in the induction furnace, improve the proportion of carbon scrap steel use, the production process should pay special attention to some of the problems. According to …
How to choose ramming mass and adjust the composition Read More »
The stability of continuous casting in the package is to ensure production stability and good quality of cast billet premise. Long life tundish package can reduce the number of times to replace the tundish, which not only reduces the labor intensity of workers, but also can reduce the occurrence of production accidents. Therefore, to improve …
How to solve the problem of tundish sizing nozzle steel clamping Read More »
The tundish monoblock stopper is one of the most important control elements in the continuous casting production process, installed in the intermediate package, with the submerged entry nozzle or tundish upper nozzle, in the continuous casting process to control the flow of steel from the tundish to the crystallizer, in order to ensure the stability …
In view of the causes of various cracks, from the process, operation and other aspects of the introduction of measures to limit and reduce cracks, in order to achieve the best performance of the use of ladle slide gate. 1.Improve the thermal shock resistance of the slide gate material By reducing the coefficient of thermal …
6 effective measures to reduce cracks of ladle slide gate plate Read More »
Understanding the reasons for the destruction of the ladle slide plate, let’s have a general understanding of the sliding gate mechanism of the ladle. The schematic diagram of the structure of the spout and slide plate is shown below: The ladle sliding nozzle is composed of sliding gate mechanism, upper nozzle, slide plate and lower …
The ladle sliding spout consists of upper nozzle, upper slide plate, lower slide plate and lower nozzle, which is the channel for steel to enter the intermediate ladle from the ladle, and plays the role of sealing the steel flow and regulating the flow. Through the related technical improvement, the service life of ladle upper …
The compactness of the crucible has an extremely important impact on its service life. In order to make the crucible dense and the porosity as low as possible, it is necessary to pay attention to the particle size distribution of the refractory material, so that the gaps between the large-grained refractory materials can be filled …
