News Date:2015-09-15
Hongshan Shangri-la, 800t/d lime production line
The copper mine in Hongshan Shangri-la Yunan was regular customer of Xinhai. Xinhai provided mine EPC for it taking charge of test to equipment providing. The suitable process and mineral equipment wo
Species：limestone
Capacity：three periods, 800d/t →2000t/d →4500t/d
Process：The two stages one closed-circuit crushing, one stage grinding, one stage calcination
Project Configuration:
1. Raw Material Conveying: jaw crusher,ball mill
The 20-40mm limestone on the stock ground is sent to storage silo by the B1000 belt conveyor with large inclination. In the storage silo, qualified limestone with granularity more than 10mm will be sent to the gravel silo, while limestone with particle size less than 10mm will be conveyed to the powder silo.
2. Limestone Calcining: rotary kiln
The limestone calcining system is mainly made up of 10.5×8.5m vertical preheater, 4.0×60m rotary kiln and vertical coolder whose output is 600t/d and heat consumption of 5.75GJ/t. Limestone inside the preheater is heated by high-temperature gases from rotary kiln to 600-800°C, at which temperature limestone can be partly decomposed. Then the limestone will be sent by 12 hydraulic push rods to the kiln end, where it will undergo high-temperature calcination before sent to the vertical cooler. The processed limestone will be cooled down by cold air to 65°C. Air from the vertical cooler enters into the rotary kiln as the second air to take part in calcining process.
3. Finished Product Conveying:
The final lime will be sent to the storage bin for final products by NE500 bucket elevator. After screening, qualified lime whose particle size ismore than 5mm will be sent to storage for active lime, while powder lime whose size is less than 5mm will be sent to storage bin for powder.
Project Analysis
The project confirms to the national industrial policy absolutely, fulfilling the demand of energy conservation and emission reduction and comprehensive utilization of resource. Meanwhile, the output is high, the power consumption is lower than industry level, the product quality reaches the standard, and the production efficiency is high.
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