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The brief introduction of refractories that used for steel converter

[2016-09-09]

Converter steel generally consists of mouth, hat furnace, bosh, bottom and tapping hole components.

Refractory furnace mouth must have a high thermal shock resistance and slag resistance, easy to hang and hang steel slag, oxidation resistance, impact resistance, and the like. Use of dolomite brick firing, to enhance life, but also the use of carbon brick, high-purity magnesia brick and cast refractory products.

Furnace slag cap is subject to severe erosion of the site, usually using a combination of tar dolomite brick or magnesia brick.

Bosh: loading side is the most serious damage to the lining of the site. Usually high-temperature firing synthesis of high-purity dolomite brick and magnesia brick directly bonded, and after oil treatment. Tapping side with tar dolomite brick or bonded magnesia brick. Slag slag line by severe corrosion, thus requiring refractories have excellent slag resistance. Usually high temperature firing high MgO synthetic or high purity magnesia brick containing dolomite brick, after immersion processing uses. Both sides of the trunnion useful for high temperature firing high-purity dolomite brick or high purity magnesia brick, but also useful for fused magnesia brick of recombination.

In the bottom of blowing molten steel by severe erosion. In slagging and corrosion of the steel slag. Generally use a combination of tar dolomite brick or magnesia brick.

Affected steel tapping hole erosion and drastic temperature changes, very serious damage. At present, many with burned magnesia bricks made of fused magnesia brick or sleeve, also uses high-purity magnesia ramming mixes or high purity calcined magnesia brick pipe.

Converter lining refractories for the overall technical requirements are: high refractoriness, high load softening temperature, compact, thermal shock resistance, good mechanical properties, strong slag resistance.

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