Rotary hearth furnace

Abstract

The invention relates to a rotary hearth furnace. The rotary hearth furnace comprises a furnace body, a furnace bottom, a discharging device, a burner and a material water quenching device, and the cross section of the furnace body is in a circular ring shape, the furnace body is provided with a feeding opening, and discharging openings are formed at the bottoms of the inner ring side wall and theouter ring side wall of the furnace body; an annular reaction space is defined by the inner ring side wall and the outer ring side wall of the furnace body and the upper surface of the furnace bottom; the burner is mounted on the side wall of the furnace body, the discharging device is mounted on the furnace body, and a discharging opening body of the discharging device communicates with the discharging openings; and the material water quenching device is arranged on the outer side of the furnace bottom and comprises a material water quenching channel and a water quenching pool which communicate with each other, and the material water quenching channel communicates with the discharging openings. According to the rotary hearth furnace, the discharging device is designed to be the mode of discharging on both sides, materials in the rotary hearth furnace are completely discharged in time to prevent the furnace bottom and the furnace wall from being jammed due to multiple times of heatingand melting of the stored materials, sensible heat of the materials is fully utilized, and the rotary hearth furnace has the characteristics of long service life, high productivity and low energy consumption.

Description

technical field [0001] The invention relates to the technical field of rotary hearth furnaces, in particular to a rotary hearth furnace with discharge on both sides. Background technique [0002] The high-temperature annular rotary hearth furnace is a new type of rotary hearth furnace widely used in the world. It is mainly used for the roasting of carbon-containing pellets at 1400 °C in the iron and steel industry, the roasting of non-metallic materials at 1600 °C in the aerospace industry, or the heating of engine steel sleeves at 1200 °C in the automotive industry. and other metallurgical industries. [0003] The commonly used rotary hearth furnace direct reduction technology is iron ore powder (or laterite nickel ore, vanadium-titanium magnetite, sulfuric acid slag or metallurgical dust, dust removal ash, steelmaking sludge, etc.) after batching, mixing, pelletizing and drying Carbon-containing pellets are fed into a rotary hearth furnace with a ring-shaped furnace and a...

AI Technical Summary

Problems solved by technology

[0004] At present, the discharge method of the reduction rotary hearth furnace is usually discharged from one end, which can only remove the materials on one side, and the materials on the other side cannot be completely removed. Adhesion of furnace bottom and furnace wall will cause the furnace bottom and furnace wall to become thicker and jammed, destroy the transmission system of the furnace body, and cause shutdown accidents in severe cases

Images