Why does the ramming material of the intermediate frequency furnace pass through the furnace?

The ramming material of the intermediate frequency furnace passes through the furnace. Recently, a customer asked why the ramming material of the intermediate frequency furnace he produced is easy to pass through the furnace? The furnace is built with high-alumina sand, and it has been frequently passed through the furnace recently. Sometimes a furnace of cast steel is smelted a day, and when a furnace of cast iron is smelted, the cast iron is easy to wear through the furnace. I don’t know why, why is it not used in the cast iron furnace after smelting? The following editor will explain to you: Dry hitting? Wet hitting? How big is the furnace? The quality of the knot?

High-alumina lining can be used for cast steel or cast iron melting, the key is the quality of the knot. In addition, when melting cast iron, the temperature cannot be as high as that of cast steel, and the maximum temperature is 1500-1530 degrees Celsius. The key lies in high-alumina lining, low carbon steel , The furnace is released at high temperature. At this time, the furnace lining softens and creeps, which may cover cracks. The molten iron has good fluidity, forming cracks and drilling iron. .Perhaps it is more appropriate to use an acidic ramming material.

In addition, it should be noted that in addition to the traditional crushing, screening and magnetic separation processes, the ramming material also needs to be dried and washed. The silicon content of the copper-smelting siliceous ramming material is generally above 95. 3. Iron oxide is less than 0.5.3 oxide 2 Aluminum is less than 0.7. The refractoriness is generally 1650 degrees.

The particle size of large particles is about 5 mm. The dosage per cubic meter is 2300kg; the bulk density is 2.0. It is suitable for tempering bronze, red copper, cupronickel, and brass. However, the impurities of the siliceous ramming material used should not be too large, and the silicon content should not be too high. If it is too low, it is easy to show the phenomenon of belly bloating. It will cause the reduction of furnace age and life, which will affect the use.