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

**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.

**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.

**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.

**Emission Control**  

A two-stage dust removal system (cyclone + bag filter) ensures exhaust gas meets environmental standards, with dust concentration below 30mg/Nm³.

**Key Features**  

- Complete production line solution  

- Energy-efficient design with heat recovery  

- Environmentally compliant operations  

- Reliable 400MT/day capacity  

- Successful operation since 2018  

This project demonstrates our expertise in delivering efficient and eco-friendly active lime production solutions.