Masonry method of iron ladle universal arc brick

In the foundry smelting industry, molten iron ladle is usually used to contain the molten steel smelted from the electric furnace. The smelting temperature of the high-temperature electric furnace is within the range of 1450℃. When the smelted electric furnace is filled with liquid that can cast castings, it is then sent to the workshop. After driving off the electric furnace, pour the high-temperature molten steel into the molten iron ladle. The overall shape of the molten iron ladle is a cone-shaped cylinder with a large top and a small bottom. Therefore, it is necessary to build a layer of refractory on the inside.

The selection and masonry of the refractory materials in the molten iron ladle is currently divided into two categories as a whole. One is the use of monolithic refractory castables to form an integrated furnace. The second method is to use iron ladle universal arc brick masonry. Today we will focus on the method of laying universal arc bricks with ladle.

The model and size of the universal arc brick for ladle can be found in the new kiln masonry manual. In the kiln masonry manual, the model and specifications of the universal arc brick for ladle are also applicable to the ladle. , The commonly used models are C-23, the size is 280*100*100 or 280*100*80 these two models are the most commonly used, generally small size universal arc brick can be used in the ladle of less than 3 tons, large size universal Arc bricks can be used in ladle of more than 5 tons. Overall, the size of the universal arc brick is selected according to the inner diameter of the molten iron ladle, and it is necessary to ensure that the holding capacity after masonry cannot be less than the amount of molten steel after a single smelting.

Take a recent customer of our company in Liaoning as an example. The company mainly produces rolls. The workshop is equipped with a series of equipment such as electric furnaces, molten iron ladle, heating furnace, etc. The company is out of stock due to the shortage of universal arc bricks for laying molten iron ladle. I ordered a batch of C-23 iron ladle universal arc bricks from our company. Before ordering, I only asked about the model specifications and the source of goods, and did not make a good technical contact. When the iron ladle universal arc bricks were sent to the use site, It happened that the workshop building staff could not build, and I responded to our company. Our company was also very surprised by the cause of the problem. Later, after arriving at the building site, we found that the company only purchased the C-23 from our company. The model of the ladle is universal arc brick, but the starting bricks that need to be made when the ladle is laid are not ordered. My company thinks that the company has a similar starting universal arc brick. Neither party did a good job of communication at the masonry level, so the on-site masonry workers would not use the reason why they could not masonry.

The masonry of the iron ladle universal arc brick is built by climbing the slope one by one. It is similar to the steps and is not built one by one. This is a misunderstanding of many factories. Among them, there are a total of 7 models of climbing bricks for the iron ladle universal arc brick before bricklaying, and each model has similar length and arc but different thickness, so that it can form a step and go up, the beginning and the end. There is no right interface. You only need to base the 7 starting bricks in the front, and then build the 8th C-23 universal arc brick. The entire back is the product of this model.

Therefore, you must do a good job of technical communication in the masonry before ordering the iron ladle universal arc brick. It is not a single model of masonry, but the first 7 blocks of starting bricks are required to climb up the slope. After this kind of masonry, there is no mating joint as a whole, and it is strong and durable.