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Curved-chamber kiln

A technology of kiln barrel and kiln shell, which is applied in the field of curved chamber kiln, which can solve the problems of unreasonable shell stress, shed material accidents, and burnout of spray guns, and achieve the effects of increasing production, eliminating sharp corners, and increasing cross-sectional area

Inactive Publication Date: 2010-03-03
XINXING HEBEI ENG & RES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are often nodules in the kiln, frequent burning of spray guns, and even shed material accidents
Moreover, the stress concentration at the sharp corners is relatively serious, and the force on the shell is unreasonable; more steel plates are needed to meet the strength requirements

Method used

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  • Curved-chamber kiln
  • Curved-chamber kiln

Examples

Experimental program
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Embodiment Construction

[0016] As shown in the drawings, the present invention includes two kiln barrels 1, 2, and each kiln barrel 1, 2 has a feeding device 3, a fuel spray gun 4, a kiln shell 5, a masonry layer 6 and a discharge from top to bottom. In the device 7, the two kiln tubes 1 and 2 are connected by a flue gas channel 8. The cross section of the masonry layer 6 of each kiln tube 1 and 2 is oblate. The upper and inner sides of the flue gas passage 8 in the middle of the kiln barrels 1 and 2 are respectively provided with outward air guiding slopes 9, and the lower and outer sides of the flue gas passage 8 in the middle of the kiln barrels 1 and 2 are respectively provided with inward dragging slopes 10, It is also possible to provide only the wind guide slope 9 instead of the drag wind slope 10. The kiln barrels 1 and 2 between the wind guide slope 9 and the drag wind slope 10 are narrowed in the left-right direction. The hot air in the kiln barrels 1 and 2 can be accelerated, mixed evenly...

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Abstract

The invention relates to a curved-chamber kiln, in particular to the curved-chamber kiln for calcining massive ore such as limestone, dolomite and the like. The curved-chamber kiln comprises two kilncylinders, each kiln cylinder comprises a feeding device, a fuel spraying gun, a kiln shell, a bricklaying layer and a discharging device from top to bottom, the two kiln cylinders are connected by asmoke channel, and the curved-chamber kiln is characterized in that the cross section of each bricklaying layer of each kiln cylinder is oblate; the upper insides of the smoke channel in the middle part of the kiln cylinders are respectively provided with an outward guiding wind slope, and the lower outsides of the smoke channel in the middle part of the kiln cylinders are respectively provided with an inward dragging wind slope; and the kiln cylinders between the guiding wind slopes and the dragging wind slopes become narrow in the left-right direction. The curved-chamber kiln has the advantages of small cavity width, good calcining quality and easy operation.

Description

Technical field [0001] The invention relates to a curved-hearth kiln, in particular to a curved-hearth shaft kiln for calcining massive ores such as limestone and dolomite. Background technique [0002] At present, the existing curved-hearth kiln producing lime, dolomite and other products has two kiln bodies. The two kiln bodies alternately calcine and preheat the ore. There is a connecting channel between the two kiln bodies to communicate with each other, and the two kiln bodies are connected regularly. To change the working state of the kiln body. During operation, the two kiln bodies are loaded with ore from the top, and the fuel is fed in from the upper part of the two kiln bodies. The fuel is evenly distributed on the entire section of the kiln through multiple spray guns buried in the preheating zone, so that the fuel Get uniform combustion. The fuel used in the curved-hearth kiln is also a fluid fuel, such as gas, oil, pulverized coal, etc. [0003] Since the two kiln c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/12
Inventor 李九狮张缰山闫炳宽刘继东
Owner XINXING HEBEI ENG & RES INC
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