Method for building converter bottom

Abstract

The invention relates to a method for building a converter bottom. The converter bottom is built in a successive building and drilling mode. The method comprises the following steps of: 1) taking solid bottom gun bricks for later use; 2) building converter bottom bricks outwards along the center of the converter bottom, and starting to lay the solid bottom gun bricks when the converter bottom bricks are built to the positions of gun holes; 3) pre-positioning the bottom gun bricks, ensuring that the bottom gun bricks are closely adjacent to the converter bottom bricks, and building the converter bottom bricks among the bottom gun bricks, wherein the movement amount of the bottom gun bricks is controlled within + / -50mm away from the central line of a bottom gun; and 4) after a converter is built, drilling at positions of the bottom gun bricks corresponding to a muzzle and performing top-bottom blowing. The method effectively reduces brick cutting amount, ensures high building quality, reduces accident rate and improves building efficiency.

Description

technical field [0001] The invention relates to a construction method for a converter, in particular to a method for building a converter bottom. Background technique [0002] The original converter bottom lance brick is in the form of a bottom lance hole in the center, and the bottom lance brick and the bottom lance air-permeable brick are positioned for masonry, resulting in relatively large restrictions on the masonry of the furnace bottom bricks and bottom lance bricks in each ring of the furnace bottom, resulting in There are many gaps in the masonry, and bricks need to be cut to fill the gaps, which increases the amount of bricks to be cut and increases the labor intensity. When the distance between the furnace bottom brick and the bottom gun brick is too small, the cut furnace bottom brick is easy to be eroded during the smelting of the converter heat load , very prone to production accidents, bringing a series of safety hazards to safe production. Contents of the i...

AI Technical Summary

Problems solved by technology

[0002] The original converter bottom lance brick is in the form of a bottom lance hole in the center, and the bottom lance brick and the bottom lance breathable brick are positioned and built, resulting in a relatively large restriction on the masonry of the furnace bottom brick and the bottom lance brick in each ring of the furnace bottom, resulting in There are many gaps in the masonry, and bricks need to be cut to fill the gaps, which increases the amount of bricks to be cut and increases the labor intensity. When the distance between the furnace bottom brick and the bottom gun brick is too small, the cut furnace bottom brick is easily eroded during the converter heat load smelting , very prone to production accidents, bringing a series of safety hazards to safe production

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