1. Project Overview
We designed and built a 400 metric ton per day active lime production line for a client in Jinzhong City, Shanxi Province. The production line uses limestone and raw coal as main raw materials, with daily processing capacities of 400 tons and 200 tons respectively. The complete system includes feeding & screening, calcination, conveying, combustion, pulverized coal preparation, and dust removal equipment.
2. Project Background
Our client is a professional limestone mining and processing company. After thorough market research and technical evaluations, they chose our complete solution. The project was contracted in March 2018 and successfully commenced production in September 2018 after installation and commissioning.
3. Technical Solutions
3.1 Rotary Kiln Calcination System
Limestone enters the rotary kiln from the tail end and moves toward the head as the kiln rotates. During this process, it undergoes complete heat exchange with high-temperature gases for effective calcination. This system ensures uniform heating, stable product quality, and low over-burning rates.
3.2 Pulverized Coal System
An air-swept ball mill installed at the kiln head prepares coal powder. The compact design minimizes transportation distance and recycles waste heat from lime cooling, significantly improving energy efficiency.
3.3 Cooling & Storage
The 900°C hot lime is rapidly cooled to 60°C above ambient temperature in a single-cylinder cooler, then transported to storage silos via bucket elevator.
3.4 Emission Control
A two-stage dust removal system (cyclone + bag filter) ensures exhaust gas meets environmental standards, with dust concentration below 30mg/Nm³.
Our complete production line solution delivers reliable 400MT/day capacity with an energy-efficient design featuring advanced heat recovery technology. Operating successfully since 2018, this fully environmentally compliant lime production system demonstrates our expertise in delivering efficient and eco-friendly active lime solutions. The project showcases our ability to integrate operational reliability, energy conservation, and environmental sustainability in industrial-scale lime production.
