Flatness returning brick masonry structure for spherical converter

Abstract

The invention provides a flatness returning brick masonry structure for a spherical converter. Flatness returning bricks comprise a flatness returning cut brick on the uppermost layer and a pluralityof layers of flatness returning standard bricks on the lower portion; the end portion of the flatness returning cut brick is in the stair shape; the end portion of the last ring furnace bottom brick is in the stair shape matched with the end portion of the flatness returning cut brick; the flatness returning cut brick is connected and constructed to the upper end of the last ring furnace bottom brick in a lap joint manner, and forms a stair-shaped gap with the last ring furnace bottom brick; and the ratio of the thickness of the flatness returning cut brick to the thickness of the flatness returning standard bricks is equal to 1.5-2: 1. The masonry structure is close in cooperation, small in gap and higher in molten steel corrosion resistant capacity and molten steel permeating inhibitingcapacity; and meanwhile, the flatness returning cut brick on the uppermost layer and the end portion of the last ring furnace bottom brick are connected and constructed in the lap joint manner, the integrity of the masonry structure is good, gaps are few, strength is large, and the service life of furnace lining bricks can be prolonged more easily.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a back-flat brick masonry structure of a spherical converter. Background technique [0002] At present, the general masonry method between the bottom bricks of the spherical converter and the flattening bricks is that the bottom bricks are built in a circular way. After the bottom bricks are built to the last ring, the bottom bricks will form a certain inclination angle. The angle of the small head of the flat brick will be produced according to this angle, and the length will be based on the distance from the fired magnesia brick. During masonry, the flat brick will closely fit with the last ring of the furnace bottom brick. This kind of masonry will cause a straight seam between the furnace bottom brick and the flattening brick. When the furnace lining is eroded, molten steel is easy to seep through this straight seam to the bottom of the furnace, causing a steel s...

AI Technical Summary

Problems solved by technology

However, the trapezoidal masonry structure is made of split masonry (built from -1 layer and -2 layer horizontal brick lap joints), which has poor integrity, a large number of brick joints, and poor bonding of masonry joints. Corrosion ability of molten steel is still unsatisfactory

Images