Self-cleaning ladle lining gunning material

Abstract

The invention discloses a self-cleaning ladle inner liner gunning mix, which is prepared from 30-50 parts of high purity fused magnesia whose raw material particle size is 0.1-3mm, 15-30 parts of natural pyrophillite whose particle size is 0.1-3mm, 1-5 parts of bentonite whose particle size is 220 mesh, 1-5 parts of silicon powder whose particle size is 2mum or less, 1-5 parts of calcium aluminate cement whose particle size is 325 mesh, 0.1-0.5 parts of composite water reducer composed of sodium tripolyphosphate and sodium hexametaphosphate and 0.5-1 parts of quick-drying agent. According to the invention, the raw material ratio is scientific, high purity fused magnesia is used as a mainly raw material, high-quality bentonite is used as a plasticizer, a calcium aluminate cement is used as a binder, and the obtained gunning mix is green and environmental protection. During construction, the gunning mix has the advantages of good fluidity and caking property, high intensity, long usage life and erosion resistance; the ladle (inner liner) after gunning always keeps clean state in the usage process, thereby effectively solving the slag adhesion problem of ladle, and the gunning mix does not pollute molten steel, thereby benefiting production of clean steel, improving turnover efficiency of ladle and realizing energy saving and consumption reduction purpose of the steel factory.

Description

technical field [0001] The invention relates to a steel ladle lining material, in particular to a self-cleaning steel ladle lining gunning material. Background technique [0002] With the development of science and the advancement of industrial technology, iron and steel enterprises generally adopt short-process steelmaking technology, which not only improves efficiency but also reduces energy consumption. Ladles are multifunctional steelmaking equipment for receiving molten steel, transporting molten steel, and refining molten steel. Much attention. How to improve the operating efficiency of the ladle and improve the service life of the ladle is a very important issue. [0003] Improving the service life of the ladle is to solve the material problem of the working lining of the ladle on the one hand, and how to maintain the use of the working lining of the ladle on the other hand. Many experts continue to conduct research on the former, and the technology has reached a ve...

AI Technical Summary

Problems solved by technology

At present, the ladle gunning materials commonly used in steel mills are ordinary alkaline gunning materials, which are made of electro-fused or sintered magnesia as the main raw material, and are made by adding binders, plasticizers and water reducers at the same time. The rear ladle is very easy to stick to slag, and the slag must be cleaned before receiving molten steel, which not only increases the labor intensity of workers, but also greatly reduces the turnover efficiency of the ladle and increases the production cost of the steel factory