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Limestone crushing plant

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Introduction

The main component of limestone is calcium carbonate (CaCO3), which can be directly processed into stone and fired into quicklime.
Lime has quicklime and slaked lime. The main component of quicklime is CaO, which is generally in the form of a block, pure white, and pale gray or yellowish when it contains impurities. Quicklime absorbs moisture or adds water to become hydrated lime. Slaked lime is also called slaked lime. Its main component is Ca(OH)2. The slaked lime is formulated into a lime slurry, a lime paste, a lime mortar, etc., and is used as a coating material and a tile adhesive.
 

Principle

Production Process
1. Raw material storage, transportation and screening
Firstly, the limestone (20-40mm) that meets the particle size requirement is sent from the mining area to the processing production area, and then the material is fed into the discharge silo by the feeder through the belt conveyor. After screening, the particle size is 10mm or more and 10mm. The following materials are sent to the crushing silo and the silo silo. After the qualified limestone raw material is put into the preheater to complete the preheating and pre-decomposition, the next step can be carried out.

2. Limestone calcination
While the material is in the preheater, the high temperature flue gas introduced from the rotary kiln preheats the material to 600-800 degrees Celsius, which partially decomposes the limestone, which is more conducive to the calcination process. Rotary kiln has become the mainstream equipment for lime calcination process. Limestone is fed into the kiln cylinder from the kiln tail cylinder. The raw material is decomposed, burned and other processes in the kiln, and then discharged from the bottom end.
3, finished product cooling and conveying
After the limestone is calcined by the rotary kiln, the next step is to cool, and the cold air blown by the fan is used to cool the material to 65 degrees Celsius to discharge the cooler. After the finished lime is discharged, it is transported by the bucket elevator to the top of the silo, and then sieved to divide the material into different granularity storage bins.

Equipment configuration: vibrating feeder, belt conveyor, rotary kiln, cyclone preheater, cooler, circular vibrating screen.

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