Dislocation type centre section naked flame vertical kiln

Abstract

The invention relates to a structural improvement for a brick and concrete structured vertical kiln of calcined lime, gangue, chainotte, plaster and other block materials, in particular to a middle part open fire vertical kiln in which a pre-heating chamber and a cooling chamber are in malposition. The invention comprises a kiln body arranged on the base, the kiln body comprises an upper pre-heating chamber, a middle calcining chamber and a lower cooling chamber, the pre-heating chamber, the calcining chamber and the cooling chamber are mutually communicated, inner cavity of the calcining chamber is divided by the natural stacking slant of the block materials to form a material stacking space and a heating room, the projection positions of the pre-heating chamber and the cooling chamber on a horizontal plane are totally staggered, the lower end of the pre-heating chamber is connected with the top end of the natural stacking slant of the block materials, and the upper end of the cooling room is connected with the bottom end of the natural stacking slant of the block materials. The invention has the advantages of fast and complete combustion of fuel, greatly increased kiln yield per unit, easy operation, improved stability of quality, little impurities and high quality of the produced lime, slight pollution and environmental protection.

Description

(1) Technical field [0001] The invention relates to a structural improvement of a brick-concrete vertical kiln for calcining lime, coal gangue, burnt clay, gypsum and other massive materials, in particular to a central open flame vertical kiln in which a preheating chamber and a cooling chamber are dislocated. Especially suitable for calcination of lime. (2) Background technology [0002] Lime is an important raw material in metallurgy, chemical industry, agriculture, sanitation, construction and other industries. Generally, it is made by calcining in a brick-concrete structure shaft kiln. In the existing vertical kiln, its preheating chamber, calcining chamber and cooling chamber are arranged in a straight line, and its calcining method is: coal and limestone are added into the kiln body for mixed combustion. This "internal combustion" method has the following problems: insufficient coal combustion not only wastes energy, but also easily forms "nodules" in the kiln body, ...

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Problems solved by technology

This "internal combustion" method has the following problems: insufficient coal combustion not only wastes energy, but also easily forms "nodules" in the kiln body, which will block the lime in the kiln body and may even cause landslides; Some are not burnt through, and some are over-burned to reduce the quality; burning coal and limestone mixed together will easily pollute the lime and reduce the quality of the lime; the calcination process is not easy to adjust and control

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