Double-firepot ring-shaped shaft kiln

Abstract

The invention relates to double-firepot ring-shaped shaft kiln. It includes the first and second kiln cylinders. Their sections are the same semi-ring which are formed by outer and inner circle radius, used to set massive ore, connected with each other along diameter direction by connecting passage. The invention can ensure shat kiln product quality and output, eliminate passage blockage, and realize low investment and failure rate for device.

Description

technical field [0001] The invention relates to a heat storage kiln for calcining lumpy bulk materials, in particular to a double-chamber shaft kiln. Background technique [0002] Judging from the existing regenerative kilns for calcining lumpy bulk materials, the cross-sections of the kilns mainly include the following types: one is square; the other is circular; the third is semicircular. [0003] The kiln with square section is only limited to the situation of low output, this is because due to structural limitations, the ratio of the long side to the short side of the square section cannot be too large. If the output of the kiln is increased, the long side and the short side must be enlarged at the same time to increase the calcination area and thereby increase the output. According to the existing experience, in this case, the gas bias flow is too large, resulting in calcination. Product quality is reduced. [0004] It can be seen from Figure 1 that the circular kiln ...

AI Technical Summary

Problems solved by technology

[0005] It can be seen from Figure 2 that the channel connecting the two kiln chambers of the vertical kiln chamber with a semicircular cross section is on the entire diameter, and the distances from the materials to the diameter of each part of the semicircle are quite different, so there is still airflow in the structure The distribution is uneven, so under the premise of ensuring product quality, the increase in production is also limited

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