A Construction Technology of Carbon-free Steel Ladle Composite Ladle Bottom

Abstract

The invention proposes a carbon-free steel ladle composite bottom construction process. The application of the technology not only ensures the safe use of the bottom, but also reduces the difficulty of repairing the bottom and reduces the repair cost. A carbon-free steel ladle composite bottom construction The process includes the following steps: cleaning the bottom, pouring the permanent lining castable, curing, pouring the castable for the working layer of the bottom, curing, building bricks for the working layer of the bottom, baking, using the present invention to construct the bottom, the first layer of permanent The lining castable can play the role of ensuring the safety of the bottom of the package and heat insulation. The castable of the second layer of the bottom working layer ensures the safety of the repaired bottom of the package. The third layer of carbon-free prefabricated bricks can be partially replaced and repaired. There has always been a contradiction between the safety of ladle bottom use and the bottom repair and bottom repair cost. The three-layer refractory structure of the composite bottom has solved this problem very well.

Description

technical field [0001] The invention relates to the repair and use of the bottom of a refined carbon-free ladle in the iron and steel metallurgy industry, and is a construction process for a composite bottom of a carbon-free ladle. Background technique [0002] Iron and steel metallurgy technology is developing rapidly, the smelting process is diverse and complex, and high temperature and high vacuum smelting are gradually increasing. This is more and more higher to the use requirement of carrying molten steel container. The refining ladle is the container with the harshest conditions in the molten steel refining process. The application of special refractory materials in the ladle is relatively large, and the configuration of refractory materials is diverse. While various refractory materials perform different smelting functions, the matching of the life of each refractory material becomes the key to the overall life of the ladle. [0003] Due to the different service li...

AI Technical Summary

Problems solved by technology

If all the bottom bricks or bottom materials are replaced, the repair cost will be high, resulting in waste of refractory materials

If it is partially replaced, the labor intensity and workload of dismantling refractory materials are high, and it is difficult to guarantee the safety of the bottom of the package after digging and mending