Using Refractory Materials In Ferronickel Smelting Furnaces

Ferronickel smelting furnaces are similar to steel smelting EAF furnaces. The bottom and walls are built with dense magnesia refractory materials; the upper part of the bottom is a pot-shaped overall layer built with magnesia or dolomite ramming mass; the cover is built with high alumina refractory, alumina magnesia refractory or magnesia chrome refractory, or a whole cover or large prefabricated assembly casted with high alumina refractory castables.

Ferronickel smelting blast furnaces can be divided into two types: rectangular and round. The round blast furnace is similar to the iron smelting blast furnace. The furnace body is built with dense fire clay refractory or high alumina refractory. The bottom and walls are built with carbonaceous refractories as the lining. Other parts are built with magnesia chrome refractories. The bottom of the rectangular furnace is built with magnesia refractories. The working layer is built with magnesia ramming mass. The material selection of other parts is the same to the round furnace.

Ferronickel smelting rotary kilns are generally built with direct bonded magnesia chrome refractories. Other parts are built with fire clay refractory and high alumina refractory as the lining. The nickel discharging groove is built with alumina carbon refractories, magnesia chrome refractories, fully synthetic high chrome magnesia chrome refractories, and high chrome rebound fused magnesia chromite refractories.