A manganese ore roasting rotary kiln system

Abstract

The invention relates to a manganese ore roasting rotary kiln system, comprising a batching system, a feeding system, a rotary kiln, a tail gas dedusting system and a gas burner, the batching system includes a batching belt scale, the batching belt scale is provided with a quality detection device, and the feeding system includes Disc feeder and feeding chute, tail gas dust removal system includes cooler, bag filter, induced draft fan and chimney, gas burner includes gas burner and control valve group, cooler is equipped with kiln tail gas detection device, outlet The kiln tail gas detection device detects the content of various flue gases in the kiln tail gas, and the quality detection device detects the quality of manganese ore for batching. When the smoke content in the kiln tail gas exceeds the preset value, it means that the roasting reaction in the rotary kiln is insufficient. By adjusting the disc feeder and the feeding chute, feed the rotary kiln to increase the quality of manganese ore in the rotary kiln, so that the roasting reaction in the rotary kiln is more sufficient, thereby reducing the discharge of flue gas, saving costs and resources, and reducing environmental pollution.

Description

technical field [0001] The invention relates to the technical field of manganese ore roasting, in particular to a manganese ore roasting rotary kiln system. Background technique [0002] Roasting refers to heat treatment in air or inert gas flow at a certain temperature, also known as calcination. In the manganese ore roasting metallurgical process, roasting not only makes the material chemically suitable for subsequent operations, but also provides a suitable physical state. Rotary kiln refers to a rotary calciner, a thermal equipment for heating bulk or slurry materials. Its characteristics are: (1) low speed and heavy load; (2) high ambient temperature, the surface temperature of the rotary kiln shell is often above 200 ° C, and a large amount of heat is radiated to the surrounding; (3) the environment is dusty, the sealing belt of the rotary kiln and the The kiln dust conveying equipment and the chimney at the end of the kiln all scattered dust around; (4) The degree o...

AI Technical Summary

Problems solved by technology

Its characteristics are: (1) low speed and heavy load; (2) high ambient temperature, the surface temperature of the rotary kiln shell is often above 200 ° C, and a large amount of heat is radiated to the surrounding; (3) the environment is dusty, the sealing belt of the rotary kiln and the The kiln dust conveying equipment and the chimney at the end of the kiln all scattered dust around; (4) The degree of kiln lining damage varies with the temperature of each section, which is likely to cause damage to local refractory materials; (5) There is sliding accumulation of powder in the kiln, Some granular materials are impervious to roasting, resulting in "dead burn" of the powder and the quality of the granular materials cannot be guaranteed

[0003] Manganese ore roasting process will produce a variety of flue gas that pollutes the environment, especially in the case of insufficient reaction of the rotary kiln, more flue gas that pollutes the environment will be produced. The current rotary kiln directly processes the flue gas generated In order to reduce the pollution to the environment, but this treatment method cannot accurately monitor the flue gas volume, the input cost is high, and the resource waste is serious

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