Method and machine for calcining materials

Abstract

The invention provides a method and a machine for calcining materials. The machine mainly comprises feeding equipment, a preheating chamber, a calcining chamber, a cooling chamber, a discharging bin, an exhaust gas emission system, a heat accumulator and a carbon-containing coated pellet bin, wherein the heat accumulator is positioned on the two sides of the calcining chamber; one end of the heataccumulator is connected with the calcining chamber; and the preheating chamber, the calcining chamber, the cooling chamber, the heat accumulator, the carbon-containing coated pellet bin and the discharging bin are detachable assemblies and are assembled together through connecting pieces. The method comprises the following steps of: heating a heat accumulation body in the heat accumulator by using high-temperature flue gas generated after the materials are calcined; preheating combustion air by using heat released by the heat accumulation body; and preheating the calcined materials by using hot gas generated when a lime product is cooled in the cooling chamber. In the machine for calcining the materials, all composition equipment are manufactured separately and are assembled on site, transportation, installation and the examination, the maintenance and the replacement of the equipment are convenient, normalized production is facilitated, a calcining machine product is serialized, the utilization factor of the equipment is high, a good calcining effect is achieved, the oversintering and the underfiring of the calcined materials are prevented, and a produced lime product has high quality.

Description

technical field [0001] The invention relates to a device for calcining materials, in particular to an assembled method and machine for calcining materials with heat storage equipment. Background technique [0002] Lime and the like are important building materials, and are also important raw materials in metallurgy and chemical industry. The prior art uses dolomite and limestone as raw materials, and adopts a vertical kiln with burning beams to calcinate lime. The disadvantage of this process is that the direction of the furnace gas flow in the shaft kiln is opposite to that of the stone material, that is, the stone material moves from top to bottom, and the furnace gas flows from bottom to top. Gas segregation phenomenon causes limestone to be heated unevenly and affects product quality. The applicant disclosed a utility model patent with the patent number ZL200320111077.3 for an internally and externally heated lime furnace. The combustion system of the lime furnace is pr...

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that the direction of the furnace gas flow in the shaft kiln is opposite to that of the stone material, that is, the stone material moves from top to bottom, and the furnace gas flows from bottom to top. Gas segregation phenomenon causes uneven heating of limestone and affects product quality

However, the device is still constructed as a whole, and serial assembly has not been realized, and there is a shortage of low equipment utilization coefficient

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