Blast furnace used in treatment of iron mud gun port, through the usual is a water gun mud, but in the steel yield is high, the epoxy mortar are more susceptible to iron slag machine
erosion and chemical corrosion, resulting in a blast furnace slag not net, not only affect the blast furnace high yield smooth, also easy to send the world iron process of iron mouth off, resulting in iron mouth running large flow caused by accident. At the same time, because of the iron export surge, prone to iron mouth call “bazooka” accidents such as scald people.
erosion and chemical corrosion, resulting in a blast furnace slag not net, not only affect the blast furnace high yield smooth, also easy to send the world iron process of iron mouth off, resulting in iron mouth running large flow caused by accident. At the same time, because of the iron export surge, prone to iron mouth call “bazooka” accidents such as scald people.
Ingredients important producing anhydrous stemming ratio (%): brown alumina 15-24, SiC 6-15, black 20, white mud 12-16, tar, 18-20. The gun mud pressure intensity 20Mpa, easy to speak in the blast furnace mouth machine openings and anti erosion function better.
An important component of white mud amount is too large, will reduce the excessive mud gun, which occurred after hours, crack, impact stemming humanity, in stemming the adding amount of 12% basically, gradually increase the volume, current after firing line changes to +0.3%, the best performance, the plasticity is high, a steel at high temperature have a good micro expansion, no crack, no effective away by expansion, with iron, iron flow channeling cracks do not bring into shares and splashing, crisis of cooling wall serious burn.
An important component of low, medium temperature sintering agent amount, will have the influence to the stability of iron, sintering agent was added to make the gun mud formation of low melting material under high temperature, thereby stemming corrosion resistance variation, when tapping a splash phenomenon. Find the ratio of 2.5%, treatment of iron mouth, than water stemming save 25mins, and does not affect the iron groove processing, iron, iron flow stability.
The above anhydrous stemming in domestic steel reference 1, No. 2 blast furnace, a water gun mud compared with the same period, the following skills: blast furnace iron mouth indicators pass rate rose 2%, iron punctuality rate rose 6.6%, iron content difference pass rate rose 8%, iron mouth iron wind reduction rate decreased 96%, every day can increase your iron blast furnace operation, safety parameters have also been mobilized. The development and application of anhydrous stemming is very very successful, dedication to strengthen the property of high yield and make the blast furnace.
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