Improved vertical lime kiln of mixed brick-concrete structure

Abstract

The invention provides an improved lime shaft kiln with brick-concrete structure. It includes the kiln body, the central distribution platform in the kiln, the grate, the grate, the ash discharge port between the grate and the corresponding discharge rod, the storage bin, the discharge hopper, that is, the load-bearing floor on the column of the kiln body lining A tower-shaped cast steel furnace grate with integral structure is installed on the supported central distribution platform, and frame-type steel grates are evenly distributed around the furnace grate. The grate at the mouth can communicate with the annular operating room through the ash outlet, and the operating room as the air inlet channel of the kiln body is also in communication with the air inlet and operating holes on the outer wall of the kiln and the inner lining. It effectively improves the ventilation effect, uses less coal, has a higher qualified rate of products, has a safer and more reliable structure, and is more convenient and flexible to operate.

Description

technical field [0001] The invention relates to an improvement to a lime shaft kiln with a brick-concrete structure for burning lime, and is especially suitable for use by units requiring large amounts of lime, such as metallurgy, chemical industry, and construction materials. Background technique [0002] As far as the applicant knows: Lime, a very ancient and traditional building material, is in increasing demand with the development of national construction. According to statistics, more than 90% of the existing lime production is produced by common lime shaft kilns, and common shaft kilns are the most important production kiln type. Its disadvantages are that the structure is unreasonable, resulting in large investment and low output, difficulty in ash production, and the quality cannot be guaranteed. However, it is difficult to increase the size of the shaft kiln with brick-concrete structure. In short, it is difficult to stabilize the preheating zone, calcination zon...

AI Technical Summary

Problems solved by technology

However, there are still some problems worth discussing: such as the use of brick-built material distribution pyramids for material distribution, which will cause poor ventilation. Because the kiln body is relatively large, it depends entirely on the eight ash discharge ports and the central distribution platform for air intake, which seems advanced. The air volume is insufficient, and the fan is needed to force the air in, which increases the cost of lime production per unit

Due to human factors in production, it is inevitable that there will be red ash (lime temperature above 200°C) during production. Because the bottom plate of the kiln body is made of reinforced concrete, it is easy to cause cracks in the kiln body, which will damage the outer wall of the kiln body and affect the quality of the kiln. Body Structural Security

There is also a centrally distributed grate on the table. Due to the influence of high temperature and unreasonable production, the stability is not good and it is easy to fall apart.

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