Ladle breathable brick refractory castable construction method

Ladle breathable brick is an important refractory material with good refractory function and is widely used. Ladle breathable bricks are made of tabular corundum, spinel, chromium oxide and other materials, which are formed, fired and assembled. Breathable bricks have strength High, erosion resistance, corrosion resistance, high air permeability characteristics, suitable for various ladle applications. Especially the newly developed breathable bricks containing nitride materials, good corrosion resistance, not easy to penetrate steel, high blowing rate, is a new generation of breathable bricks Brick products. The construction of breathable bricks is convenient, the surface is evenly painted with fire mud, and the installation is stable.

Many ladle permeable brick mixing stations will use refractory castables during construction. It is a granular and powdery material made of ladle permeable brick refractory materials, and is composed of a certain amount of binder and moisture. Refractory castables must be constructed during construction. According to the construction process of refractory castables, the good physical function of the castables can be guaranteed, so what are the construction methods of refractory castables?

1. Set up the template according to the size required by the design, lay a layer of plastic film on the inner side of the template, pour the mixture into the template, the cloth should be uniform, and do not vibrate with a vibrating rod.

2. Castables with a density not greater than 0.8g\/cm3 should be layered and compacted with a trowel after pouring, and castables with a density of not less than 1.0g\/cm3 should be compacted and tamped with special tools after pouring.

3. It is poured in layers and parts, and can be crossed. The furnace wall is poured in layers, and the height of each layer is 700-1000mm. The furnace roof is constructed in sections, and the furnace roof between the two expansion joints should be poured at one time.

The material of the nozzle block is chrome corundum or corundum spinel, which is made of high-tech and low-cement castable technology. It has high high temperature strength, excellent slag resistance, molten steel erosion resistance, and good thermal shock stability. Nozzle block products.

Furnace bottom breathable brick: It is a relatively common breathable brick. Because it is mainly used in the bottom of the furnace, it has a strong high temperature resistance function.