Two common methods of charging the intermediate frequency furnace charge

Intermediate frequency furnace charge is also called intermediate frequency furnace charging charge, intermediate frequency furnace dry vibrating charge, intermediate frequency furnace dry blasting charge, intermediate frequency furnace ramming charge, etc. It is divided into acidic, neutral and basic furnace linings. Acid furnace linings are made of high-purity quartz, molten Quartz is the main raw material, and composite additives are used as sintering agents; the neutral furnace lining is made of alumina and high-alumina materials as the main raw materials, and the composite additives are used as sintering agents; the basic furnace lining is high-purity fused corundum, high-purity Fused magnesia and high-purity spinel are used as the main raw materials, and composite additives are used as sintering agents.

Alkaline furnace lining: mainly used for melting all kinds of high alloy steel, carbon steel, high manganese steel, high chromium steel, tool steel, stainless steel and other alloy steel.

Acid lining: Mainly used for the working lining of coreless induction furnaces for melting and holding cast iron.

Acid, neutral and basic furnace linings are widely used in coreless intermediate frequency furnaces and cored induction furnaces, as intermediate frequency furnace lining materials for melting gray cast iron, ductile iron and cast iron alloys, melting carbon steel, alloy steel, high manganese Steel, tool steel, heat-resistant steel, stainless steel, molten aluminum and its alloys, molten copper, brass, cupronickel and bronze and other copper alloys.

There are two kinds of knotting methods for intermediate frequency thermal induction furnace lining, wet knotting and dry knotting. Both methods can be used for the knotting of acid intermediate frequency furnace lining, neutral furnace lining and basic furnace lining.

Intermediate frequency furnace wet knotting refers to the knotting by adding water, water glass, brine and other adhesives to the lining knotting material. Because the knotting material contains a certain amount of moisture, there is less dust during construction and good formability. However, there are also a series of shortcomings in wet knotting: the lining material knotted in the intermediate frequency furnace is not fine enough, and the refractoriness of the lining decreases; it takes a long time to dry the lining, and when the moisture in the lining gasifies, the sensor The insulation performance of the furnace is reduced. If it is not handled well, it often leads to the breakdown of the inter-turn fire, and may also cause a short circuit to the ground. Therefore, for the larger smelting intermediate frequency furnace, the wet knot lining should be avoided as much as possible.

The dry furnace building method is now widely used in the furnace building of the crucible induction furnace. The dry intermediate frequency furnace building method without cement can maximize the refractory function of the furnace lining material and reduce the sintered layer of the furnace lining. Thinner, thicker powder layer, reduced heat dissipation loss of furnace lining, reduced tendency of furnace lining cracks, and improved reliability of furnace lining.