As the filler of blast furnace tap hole, anhydrous gunpowder should have good plasticity and be able to fill compactly. After the gunpowder is driven, it should form strength as soon as possible to shorten the time of pressing. Water-free gun mud must have the characteristics of good resistance to molten iron scouring, high temperature strength, and good resistance to molten iron corrosion, so as to make the molten iron flow stable
The main raw materials of anhydrous gun mud include: brown corundum, silicon carbide, coke, white mud and tar. The pressure strength of the gun mud is 20Mpa, and the plasticity is good. When tapping at high temperature, the opening is easy, and there is good micro-expansion, no crack, and good scouring resistance
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