Dry ramming material for medium-frequency induction furnace and preparation method of dry ramming material

Abstract

The invention relates to a dry ramming material for a medium-frequency induction furnace and a preparation method of the dry ramming material. According to the technical scheme, 63.0 wt%-78.0 wt% of quartz sand, 12.0 wt%-17.0 wt% of kyanite tailings, 8.0 wt%-13.0 wt% of enstatite and 2.0 wt%-7.0 wt% of oligoclase serve as raw materials, a binding agent accounting for 1.0 wt%-1.5 wt% of the raw materials is added, the raw materials are mixed to be uniform, and the dry ramming material for the medium-frequency induction furnace is prepared. The quartz sand comprises the following main chemical components: greater than or equal to 98.2 wt% of SiO2, less than or equal to 0.2 wt% of Fe2O3 and less than or equal to 0.7 wt% of K2O + Na2O; the kyanite tailings comprise the following main chemical components: more than or equal to 52.0 wt% of SiO2, more than or equal to 37.5 wt% of Al2O3, more than or equal to 6.7 wt% of ZrO2, less than or equal to 0.355 wt% of Fe2O3, less than or equal to 1.5 wt% of K2O + Na2O and less than or equal to 0.2 wt% of IL. The method has the characteristics of environmental friendliness, simple process and low cost; the prepared dry ramming material for the medium-frequency induction furnace is high in mechanical strength, good in chemical stability, excellent in slag resistance and long in service life.

Description

technical field [0001] The invention belongs to the technical field of intermediate frequency induction furnace lining. In particular, it relates to a dry ramming material for an intermediate frequency induction furnace and a preparation method thereof. Background technique [0002] The medium frequency induction furnace is a power supply device that converts the power frequency 50Hz alternating current into intermediate frequency (300-2000Hz) direct current. First, the three-phase power frequency alternating current is rectified and converted into direct current, and then the direct current is converted into an adjustable intermediate frequency current to supply the induction coil, a strong magnetic field is generated in the energized coil, and the charge body is heated by the principle of electromagnetic induction. The inner side of the intermediate frequency induction furnace lining material is filled with high-temperature molten metal, and the outer periphery is a water...

AI Technical Summary

Problems solved by technology

Another example is the patented technology of "a lining material for an intermediate frequency induction furnace and its preparation method" (CN109020524A). Water glass is used as raw material and mixed evenly to prepare the lining material for intermediate frequency induction furnace. Because the micro flake graphite introduced by this technology is easy to oxidize and fail, the solid water glass is easy to produce low-melting matter, which is not conducive to the high-temperature performance of the lining material.