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Iron-leak-preventing structure for permeable brick of hot metal ladle and replacing method for iron-leak-preventing permeable brick

A replacement method and a technology of breathable bricks, which are applied in the directions of casting molten material containers, metal processing equipment, casting equipment, etc., can solve the problems of safe production risks, iron leakage accidents, and iron infiltration of molten iron tanks, and achieve good iron leakage prevention effect. The effect of not easy to move out and convenient for masonry construction

Active Publication Date: 2017-03-22
武汉精鼎科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, molten iron has strong penetration ability, and it is easy to infiltrate iron from the surrounding working lining bricks. Once the infiltrated iron enters this channel, an iron leakage accident will occur, which brings great risks to the safe production of molten iron tanks.

Method used

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  • Iron-leak-preventing structure for permeable brick of hot metal ladle and replacing method for iron-leak-preventing permeable brick
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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Such as figure 1 and figure 2 A leak-proof iron structure of a ventilating brick for a molten iron tank shown in , comprises a tank wall of a molten iron tank and a ventilating brick 1 arranged on the tank wall of a molten iron tank, and a vent pipe 4 is arranged on the ventilating brick 1, and the tank wall of the molten iron tank is formed from From the outside to the inside, the molten iron tank shell 8, the permanent layer 2 and the working layer 3 are in turn. The breathable brick 1 is embedded in the permanent layer 2 and the working layer 3, and the vent pipe 4 passes out from the molten iron tank shell 8 and extends to the outside supply The trachea connection is characterized in that a ramming material filling layer 5 is filled between the air-permeable brick 1 and the permanent layer 2, and the ramming material filling layer 5 is formed by fil...

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Abstract

The invention provides an iron-leak-preventing structure for a permeable brick of a hot metal ladle and a replacing method for the iron-leak-preventing permeable brick. The replacing method for the iron-leak-preventing permeable brick specifically comprises the steps of: firstly disassembling building bricks of an original working layer which is not less than 600mm from the outer edge of the permeable brick; taking out the old permeable brick; mounting a novel permeable brick; reserving a gap between the periphery of the novel permeable brick and each of original permanent layers of the hot metal ladle; then filling the gaps with brine blended clayey ramming mass and performing ramming; then building the disassembled part with magnesia carbon bricks in a wet building manner and meanwhile, reserving gaps between the periphery of the permeable brick and the built working layers; pouring a corundum self-flowing pouring material; and then performing natural preservation 6-8h to enter a baking stage. The structure provided by the invention is simple and convenient in building construction, can avoid an iron-leak phenomenon as the permeable brick is replaced, and is good in iron-leak-preventing effect, so that the potential safety hazard of the hot metal ladle due to iron leakage is avoided.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy, and in particular relates to a leak-proof iron structure and a method for replacing the leak-proof iron breathable bricks of the hot metal tank breathable bricks after replacement. Background technique [0002] Before the molten iron enters the steelmaking furnace, it needs to be desulfurized and pretreated to remove the excessively high harmful component - sulfur. Using the molten iron pretreatment technology can not only reduce the steelmaking burden of the steelmaking furnace, but also optimize the smelting process. Steel technology, and improve the quality of steel. The technology of using breathable bricks to supply air to the molten iron tank to improve the quality of molten iron and improve the desulfurization efficiency has been widely adopted by many steel mills in the pretreatment of molten iron since 2000, and has become the basic technology in the pretreatment of molten iron. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/02
CPCB22D41/02
Inventor 张炳祥杜秀峰
Owner 武汉精鼎科技股份有限公司
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