A lime production system

Abstract

The invention relates to a lime production system, which includes a kiln body and an ash unloading device. The ash unloading device consists of a receiving bucket, an ash discharge machine, a first ash unloading hopper and a second ash unloading hopper connected sequentially from top to bottom. The ash unloading device A blower is connected to the blower, and a blast pipe is connected to the blower; the first ash discharge hopper is conical, and the axis of the cone is parallel to the horizontal plane, the lower end of the first ash discharge hopper is a conical sharp end, and the second ash discharge hopper The upper end is connected with a feed valve, the lower end of the first ash discharge hopper is connected with the feed valve on the second ash discharge hopper, the end of the blast pipe away from the blower is connected to the side of the first ash discharge hopper, and the end of the blast pipe is far away from the blower The axis of the shaft is tangent to the outer surface of the first ash discharge bucket, and a coal ash box is arranged on one side of the first ash discharge bucket, and the upper end of the coal ash box is connected with a first coal ash discharge pipe and a second coal ash discharge pipe. It can reduce the amount of pulverized coal in the produced lime and improve the quality of the lime.

Description

technical field [0001] The invention relates to the technical field of equipment for generating quicklime from limestone, in particular to a lime production system. Background technique [0002] The current quicklime is usually produced by calcination of limestone. The traditional production process is to put limestone and fuel into the lime kiln, decompose after preheating to 850°C, complete the calcination when it reaches 1200°C, and finally cool it, and then discharge it out of the kiln. outside. Lime kiln is mainly composed of kiln body, feeding device, material distributing device, combustion device, ash unloading device, dust removal device and electric control device. Lime shaft kilns are widely used at present. Lime shaft kilns adopt the principle of countercurrent preheating and calcination. Bottom-up and reverse movement of materials, different thermal processes are performed in the above-mentioned areas. Combustion-supporting air enters at the bottom of the kil...

AI Technical Summary

Problems solved by technology

However, because the freshly produced lime is relatively brittle, it is easy to crack under vibration and become smaller lime particles, which leak from the small holes on the guide chute, resulting in waste.

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