Crucible used for producing slag wool, rock wool, glass ceramic and cast stone products in induction furnace

Abstract

The invention discloses a crucible used for producing slag wool, rock wool, glass ceramic and cast stone products in an induction furnace. The crucible is a graphite crucible, is mounted on the innermost side of a hearth of the induction furnace, and serves as a fireproof working face of a molten bath; and a high-fireproofness and high-slag-resistance composite ramming material is filled and compacted among the graphite crucible, an induction furnace coil and a furnace bottom precast fireproof filling material. The crucible has the following advantages that the power density and the electrothermal efficiency of the induction furnace can be improved greatly; leakage and waste of an electromagnetic field can be reduced; the heating is rapider and more uniform; the production efficiency and the quality of a melt can be improved; the fireproofness is higher; the impermeability, the acid resistance and the alkali resistance are better; pollution to the melt can be reduced; mechanical sealing, nitrogen protection, inert gas protection and combustible gas protection ensure that the crucible and a stopper are free from burning loss; under normal use, the service life of a furnace lining exceeds one year; sand sealing can ensure that the hearth is kept sealed when a furnace cover is rotated; and the crucible can meet a requirement of mechanical stirring of the melt.

Description

technical field [0001] The invention belongs to the technical field of inorganic material production technology. Specifically, the invention relates to a crucible for producing slag wool, rock wool, glass-ceramic and cast stone products in an induction furnace. Background technique [0002] At present, in the production process of domestic slag wool and rock wool, most manufacturers use cupolas as melting equipment, melt basalt, slag, dolomite, etc. with coke in the cupola and supply them to fiber-forming equipment to make fibers. Melting ore and other raw materials will cause a lot of energy consumption and serious environmental pollution. [0003] The composition of the cupola furnace is controlled by the amount of charge into the furnace, and the reaction cycle is long; the control of the melt temperature and supply is adjusted by the coke ratio and the tuyere. There is a direct relationship between temperature and supply. When the temperature rises, the supply is reduce...

AI Technical Summary

Problems solved by technology

The composition in the furnace must be continuously adjusted, and the adjustment time is long, the efficiency is low, and the waste is large when producing products with different composition requirements.

Moreover, it is difficult for the temperature of the melt to exceed 1450°C, the melt in the furnace cannot be stirred, and the uniformity of the composition is poor

Melting ore and other raw materials will also cause a lot of energy consumption and serious environmental pollution

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