Industry news
Properties and usage of gunning material for converter lining
Converter refractory gunning materials are divided into magnesia, magnesia dolomite, magnesia chrome and magnesia calcium, and the binders are generally sodium silicate, phosphate, tar pitch and resin. At the same time, admixtures such as borax, bentonite and active SiO are added, and the dosage is generally 1%-3%. This kind of material can be sprayed by semi-dry method or dry method, and can also be supplemented manually, which is an important measure to improve the furnace life of the converter.
15
2021
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09
Introduction of converter slag splash protection technology
It is to use converter slag with high MeO content, spray high-pressure nitrogen onto the converter lining and then solidify on the lining, slow down the erosion rate of the lining bricks, and increase the furnace age of the converter. Slag blasting is a method developed by LTV's Indiana Port plant in 1991. Since the implementation of slag gunning in BOF converters, it has achieved the effect of gradually increasing the furnace age at low consumption of gunning linings, and produced three consecutive world lining service lives, and also broke the amazing record of 19,000 heats. , the plant has reduced production interruptions by 68 days per year from 1984 to 1994.
15
2021
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09
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