Calcium carbide furnace is the main equipment for the production of calcium carbide. In the calcium carbide furnace, the carbide is melted and reacted by the high temperature generated by the arc to generate calcium carbide. Reaction temperature up to 2000 ° C or more.
According to the structural characteristics of the calcium carbide furnace, it can be divided into an open calcium carbide furnace, a semi-closed calcium carbide furnace, and a closed calcium carbide furnace.
Refractory for calcium carbide furnace
The different furnace temperature parts of the calcium carbide furnace body are made of different refractory bricks. The upper part of the furnace is made of clay refractory bricks due to its low temperature.
The furnace temperature in the middle and lower parts of the furnace is high, accompanied by the scouring of high temperature furnace gas and liquid calcium carbide. It is made of high-aluminum refractory bricks.
The temperature of the lowermost part of the furnace which near the upper surface of the carbon brick layer at the bottom of the furnace is high, and the liquid product calcium carbide has a strong scouring effect, which is the weakest part of the furnace lining. Here, a circle of self-baked carbon bricks with a height of 500 mm and a thickness of 300 mm is added.
1)Mouth. At the time of tapping, the refractory brick lining of the furnace mouth is subjected to the intense scouring of the high-temperature liquid calcium carbide flowing out from the furnace and the high-temperature erosion of the oxygen and charcoal rods burning through the furnace mouth and the frequent impact of the tapping tool. Here, high temperature resistance and oxidation resistance are selected. White corundum carbonized brick or corundum brick masonry with erosion, erosion resistance and thermal shock resistance.
2) Fill the layer. Usually, the brick lining of the furnace wall is mostly constructed by wet method, and when it is heated, it expands, so a layer of asbestos board is filled between the refractory brick and the iron shell.
3) The bottom of the furnace. The bottom refractory bricks are made of carbon bricks, light carbon bricks and clay bricks from top to bottom.
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+86-371-64599000
+86-371-64599000
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