Production process of fused refractory brick
  • Time:Jun 25, 2023
  • Views: 2

Fused refractory brick is a high-grade refractory material. The production process of fused refractory brick needs to go through many steps of fine control, including raw material selection, ingredient mixing, drying, smelting, molding, sintering and inspection, to ensure The quality of the final product meets the requirements. The production process of fused refractory bricks mainly includes the following steps:

1. Selection of raw materials: The raw materials of fused refractory bricks mainly include alumina, silica sand, carbon and silicon nitride and other materials. These raw materials need to undergo strict screening and proportioning to ensure the quality of the final product.

2. Mixing of ingredients: mix raw materials with different proportions according to a certain formula, and can use dry or wet mixing to ensure the uniformity and stability of the mixed raw materials.

3. Drying: Put the mixed raw materials into the drying room for drying treatment to remove moisture and volatiles and ensure the stability of raw material components.

4. Smelting: Put the dried raw materials into an electric furnace for smelting treatment, usually by direct electric heating or electroslag remelting. At high temperature, the raw material will melt and form a glass liquid, and then form a hard fused refractory brick through a cooling and crystallization process.

5. Molding: Pour the molten material into the molding machine, and form fused refractory bricks of various specifications and sizes through extrusion or mold molding.

6. Baking: Put the shaped fused refractory bricks into a high-temperature oven for sintering to make them denser and stronger.

7. Inspection and packaging: inspect the finished product to check whether its appearance, size, physical properties and chemical composition meet the requirements, and then pack and store it for subsequent use.

refractory bricks are commonly used in hot blast stoves

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Low porosity

Low impurity content

Refractoriness under load high

Excellent thermal shock resistance

low density

good corrosion resistance

Refractoriness under load high

High temperature strength

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