Combustor used in rotary kiln during production of black talc

Abstract

The invention discloses a combustor used in a rotary kiln during production of black talc. The combustor comprises a combustor body; a fuel oil duct and an ignition oil gun are arranged in the central part of the combustor body; and the combustor body is sequentially provided with a central air duct, a rotational flow gas duct, an axial flow gas duct, a rotational flow combustion-supporting air duct and an external axial flow combustion-supporting air duct outwards from the fuel oil duct and the ignition oil gun. The combustor disclosed by the invention has the advantages that the five ducts are arranged in the combustor body, namely the external axial flow combustion-supporting air duct, the rotational flow combustion-supporting air duct, the axial flow gas duct, the rotational flow gas duct and the central air duct from outside to inside, so that combustion taking water gas as fuel is realized. Besides, the rotation direction angles of rotational flow combustion-supporting air and rotational flow gas can be adjusted, and flow of air and gas in each duct can be adjusted and allocated, so that the length and shape of flame can be more conveniently adjusted, and the phenomena that the flame is short and thick and local temperature is overhigh and the like are avoided. The central fuel oil duct is additionally arranged, so that fuel with a high heat value can be supplemented at any time, and the temperature required for high-temperature zone calcination is ensured.

Description

technical field [0001] The invention relates to the related technical field of black talc production, in particular to a burner for a rotary kiln in black talc production. Background technique [0002] my country's black talc mineral resources are quite rich. The latest survey results of Jiangxi Provincial Department of Land and Resources in 2009 show that in Guangfeng County, Shangrao City, Jiangxi Province, the black talc ore body extends intermittently for 20 kilometers, with reserves of more than 1 billion tons, ranking first in the world. , while the mining volume is less than 10 million tons. The black talc industry base in Guangfeng County, Jiangxi Province was recently approved as a provincial-level industrial base in Jiangxi Province. Black talc and new energy industries were also included in the "Twelfth Five-Year Plan" development plan of Jiangxi Province. Whitened black talc is a rare high-quality raw material with huge economic value, which can greatly alleviate...

AI Technical Summary

Problems solved by technology

Due to the large volume of the rotary kiln, it is necessary that the flame emitted by the burner should not be short and thick, and should be heated evenly, and the local temperature should not be too high to cause incomplete reaction.

[0004] Existing burners used in rotary kilns can be divided into coal burners, oil burners and gas burners (natural gas or coke oven gas) according to the different fuels used. The main structure of the burner is three channels or four channels , when the rotary kiln is heated, the above-mentioned short and thick flames and excessive local temperature will appear, which cannot meet our production needs

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