Novel rotary kiln body

Abstract

The invention relates to a rotary kiln body, in particular to a novel rotary kiln body used for rotary kilns in the industries of cement, chemical engineering and metallurgy. The novel rotary kiln body is mainly composed of a transmission gear, rolling rings, an inner barrel, an outer barrel, zirconium-aluminum cotton heat insulation plates, annular inner barrel supports and heat-resisting bricks. The inner barrel and the outer barrel are both formed by rolling and welding a heat-resisting steel sheet, the annular inner barrel supports and the zirconium-aluminum cotton heat insulation plates are arranged between the inner barrel and the outer barrel, the heat-resisting bricks are arranged on the inner periphery of the inner barrel, the rolling rings and the transmission gear used for enabling the kiln body to rotate are arranged on the periphery of the outer barrel, and the rolling rings and the transmission gear are welded with the outer barrel. Due to the technical scheme, the heat insulation layer composed of the inner barrel, the annular inner barrel supports and the zirconium-aluminum cotton heat insulation plates is added between the heat-resisting bricks and the outer barrel, and the purposes of guaranteeing temperature in the kiln body, improving production efficiency, lowering energy consumption and prolonging the service life of the kiln body are achieved.

Description

technical field [0001] The invention relates to a rotary kiln body, which mainly refers to a new type of rotary kiln body used in cement, chemical industry and metallurgical rotary kilns. Background technique [0002] At present, in the cement, chemical, and metallurgical industries, a kind of equipment often used by manufacturers is the rotary kiln. This rotary kiln is mainly composed of a kiln shell, rolling rings, transmission gears and heat-resistant bricks. Among them, the kiln shell is made of steel plates. The heat-resistant bricks are built on the inner side of the kiln shell to form a heat-resistant layer, which provides an insulating environment for the manufacture of cement, chemical products, and metallurgical workpieces. However, a large number of practices show that this two-layer structure of the rotary kiln body There are many deficiencies, such as: the thermal conductivity of heat-resistant bricks is relatively large. During the production process, heat-resi...

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Problems solved by technology

[0002] At present, in the cement, chemical, and metallurgical industries, a kind of equipment often used by manufacturers is the rotary kiln. This rotary kiln is mainly composed of a kiln shell, rolling rings, transmission gears and heat-resistant bricks. Among them, the kiln shell is made of steel plates. The heat-resistant bricks are built on the inner side of the kiln shell to form a heat-resistant layer, which provides an insulating environment for the manufacture of cement, chemical products, and metallurgical workpieces. However, a large number of practices show that this two-layer structure of the rotary kiln body There are many deficiencies, such as: the thermal conductivity of heat-resistant bricks is relatively large. During the production process, heat-resistant bricks will transfer a large amount of heat to the atmosphere through the kiln shell, resulting in a large amount of energy loss. At the same time, due to heat-resistant bricks The conduction effect of the kiln shell greatly increases the surface temperature of the kiln shell, which accelerates the chemical reaction speed of the steel plate of the kiln shell with oxygen and corrosive gases in the air, and also accelerates the damage progress of the rotary kiln shell, resulting in unsightly necessary economic loss

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