Swing type rotary kiln

Abstract

The invention relates to a swing type rotary kiln which comprises a rotary kiln body, a preheater, a feeding system, a cooler, a discharging device, a decomposition gas collecting device, a waste heat power generation device and an exhaust emission system. The rotary kiln is provided with at least one radiant tube, and the at least one radiant tube is inserted in a hearth of the rotary kiln and is in sealed connection with a kiln body casing. The radiant tube is provided with a nozzle and an exhaust gas outlet. The exhaust gas outlet is connected to an exhaust gas main pipe through a connecting hose, and the exhaust gas main pipe is connected to the exhaust emission system through an induced draft fan. A fuel inlet of the nozzle is connected with a fuel pipeline, and a combustion-supporting gas inlet of the nozzle is connected with a blower. The radiant tube is inserted in the hearth of the rotary kiln; a dividing wall of the radiant tube is utilized to heat materials in the hearth of the rotary kiln, the materials are protected from direct contact with burning flue gas, the quality of hot processing material products is improved; the hot processing materials are recycled to be decomposed into gas byproducts, and the economic benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of industrial furnaces and kilns, and relates to a rotary kiln, in particular to a swing type rotary kiln. Background technique [0002] Rotary kiln refers to rotary calcining kiln (commonly known as rotary kiln), which belongs to the category of building materials equipment. Rotary kiln can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials. Rotary kiln can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials. Cement kilns are mainly used for calcining cement clinker, which can be divided into two categories: dry production cement kiln and wet production cement kiln. Metallurgical and chemical kilns are mainly used for magnetization roasting of lean iron ore in iron and steel plants in the metallurgical industry; oxidative roasting of chromium and nickel-iron ore; roasting of high-alumina bauxite ore in...

AI Technical Summary

Problems solved by technology

[0003] In the existing rotary kiln, the materials to be calcined and the high-temperature flue gas are in contact with the furnace. The materials and flue gas cannot be effectively isolated, and the working mode of flame insulation heating and anaerobic heating cannot be achieved, so the coking of coal powder cannot be carried out, and garbage dry distillation, and the reduction of metals, etc.

Moreover, in the existing rotary kiln working mode, the flue gas is in contact with the material, and the ash, impurities, and harmful substances in the fuel can easily enter the calcined material, which is not conducive to improving the quality of the product

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