The invention provides an
anhydrous stemming and a preparation method thereof. The
anhydrous stemming is composed of the following raw materials: 15 to 25 % of
corundum aggregate, 10 to 20 % of
corundum powder, 10 to 15 % of redstone, 10 to 15 % of
silicon carbide, 0 to 8 % of
silicon nitride iron, 12 to 16 % of plastic clay, 13 to 18 % of
coke powder, 4 to 8 % of high-temperature
asphalt, 1 to 2 % of applied
borax or
boric acid and 14 to 20 % of applied
tar. The preparation method is characterized by using a production apparatus such as a powerful mixer, and comprising steps of: blending the above raw materials, dry-mixing in the mixer for 1 to 2 minutes, adding 80 to 90 % of the
tar with stirring, finely adjusting an adding amount of the
tar in accordance with the
stemming situation after stirring for 2 to 10 minutes, continuously stirring for 15 to 30 minutes, and molding with compression by using an extruder. The stemming provided by the invention has good performances of rapid
sintering and high temperature, shrinks relatively small after being burnt, and can greatly reduce adverse phenomena of large mud, broken iron notch, long-time splashing, rapid hole reaming, etc. A
new production technology is employed to ensure long-term stability of product quality, and thus the stemming has good workability and using performance.