Built-in carbon box type sealed device for horizontal kiln and sealing method

Abstract

The invention discloses a built-in carbon box type sealed device for horizontal kiln and a sealing method. The built-in carbon box type sealed device for the horizontal kiln is a carbon box type sealed device arranged outside an expansion joint of a furnace; the base of the sealing device is provided with two horizontal grooves in which carbon powder is filled, and a polystyrene film is spread on the carbon powder; the left and right side belts of the sealing device are adhered and fixed on the end faces on two sides of the base, and the opposite surfaces of the left and right side belts are provided with vertical grooves respectively; the upper ring of the sealing device is provided with two horizontal through grooves which are adhered and fixed on the upper end faces of the left and right sides belts of the sealing device; an upper top cover is covered on the upper ring; a polystyrene film is arranged between the upper ring and the furnace; schungite-carbon powder is filled in the two vertical grooves of the left and right side belts and in the gaps between the left and right side belts and the furnace to a level flush with the upper end face of the upper ring; and polystyrene films are arranged between the left and right side belts and the furnace. The sealing method of the device is to construct the sealed device and a built horizontal kiln brick furnace together and can avoid the influences of cold air outside the kiln, which is caused by poor sealing performance, on the atmosphere and temperature in the kiln and the product quality effectively.

Description

technical field [0001] The invention belongs to a sealing device and a sealing method for a horizontal kiln in the field of metallurgical equipment, in particular to a built-in carbonaceous box-type sealing device and a sealing method for a horizontal kiln. Background technique [0002] Horizontal kiln is a modern continuous heating thermal equipment, which is widely used in the production of metallurgy, ceramics and refractory materials, abrasives, abrasive tools, bricks and tiles, etc. The furnace liner of the horizontal kiln is arranged on both sides of the middle part of the horizontal kiln, forming a fixed high-temperature zone—the firing zone. The body flows in a fixed direction while gradually preheating the products entering the kiln. As a commonly used furnace in industry, horizontal furnace has a series of advantages: [0003] 1. Continuous production, short cycle, large output and high quality. [0004] 2. It works on the principle of countercurrent, so the hea...

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Problems solved by technology

However, since horizontal kilns are usually very large or very long, the entire kiln body can cover an area of ​​hundreds of square meters, and there are many sets of heating elements, busbars, thermocouples, pressure gauges and other devices installed outside such a large kiln body. It is very time-consuming, troublesome, and expensive to achieve a strict seal between these devices and the steel shell; at the same time, when the heating element and other devices need to be replaced during production, the flange connection must be opened outside the steel shell for replacement or maintenance, which is unavoidable. A large amount of cold air is sucked into the kiln from the open steel shell mouth, which seriously affects the atmosphere in the kiln and product quality.

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