Blast furnace taphole bricks clay (another name is stemming ) Stemming is made of refractory aggregate ,fine powder ,anchoring agent and liquid . ... as plugging off the tapping hole on blast furnace . So far , there are two kinds of stemming ,one is water stemming , another ... 1.The product is suitable for large, medium and small blast furnace, with high strength, low dosage, slag corrosion resistance; 2 ...