Raw Coal Dryer
Raw Coal Dryer Introduction
The lignite (brown coal) dryer is specifically designed for high-moisture lignite (brown coal), adopting advanced hot air circulation technology to quickly and evenly reduce the moisture content lignite. It can reduce the moisture content of lignite from 35%-60% to 10%-20% or even lower, improving the combustion efficiency and calorific value of lignite. Additionally, this equipment is easy to operate and maintain, providing significant economic benefits for coal processing enterprises.
Raw Coal Dryer Working Principle
The lignite dryer consists of a rotary drum that is positioned horizontally, with one end slightly higher than the other. When the equipment operates, wet lignite is delivered to the feed hopper via a belt conveyor. The lignite enters the dryer from the higher end, and the dryer continuously rotates, causing the lignite to be lifted to the top and then fall down.
The inner wall of the drum is equipped with lifting plates designed to evenly distribute the lignite at higher points, increasing the contact area between the lignite and the air.
Raw Coal Dryer System
1. Raw material crushing and loading system (optional):
For raw materials that are too large, crushers will be needed to crush the lignite to meet the particle size requirements. In order to achieve fully drying of the lignite, the feed particle size is about 20-50mm.
2. Combustion heating system:
Use pulverized coal injection furnace, pulverized coal silo, air flow conveying and other equipment to ensure that a stable high-temperature heat medium is provided to the drying system.
3. Use sealed feed box, anti-tempering chute, rotary drum dryer, discharge box and other equipment to complete the mass and heat exchange between high-moisture lignite and high-temperature hot air.
4. Environmental protection dust removal system (optional):
Cyclone dust collector, explosion-proof bag dust collector, induced draft fan and other equipment are used to recover fine particles in the dried and achieve tail gas emission standards.
5. Power distribution and control system (optional):
PLC automatic control system, complete power distribution device, local box, video monitoring system and other electrical equipment are used to achieve the control and monitoring of the drying system.
6. Product conveying system:
Use belt conveyor to transport the dried products to the user’s designated location.
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Raw Coal Dryer Features
1. Continuous Operation:
The design of the rotary drum allows for a continuous and seamless drying process, ensuring a steady output of dried raw coal. This is essential for maintaining consistent production in coal preparation plants.
2. Uniform Drying
The rotating drum exposes the raw coal to a consistent and evenly distributed heat, promoting uniform drying throughout the material. This prevents uneven moisture content and clumping, resulting in a high-quality, homogeneous dried raw coal product.
3. Versatility:
Rotary drum raw coal dryers are adaptable to various types of raw coal, including different grades and moisture levels. This versatility makes them suitable for diverse applications within the coal processing industry.
4. Robust Construction:
Typically constructed with durable materials, these dryers are designed to withstand the abrasive nature of raw coal. The robust construction ensures a longer operational life and minimal maintenance requirements.
Technical Parameters
| Model | Capacity(T/D) | Input Moisture(%) | Output Moisture(%) | Power(kw) | Floor Space(㎡) |
| RAMG1918 | 300±10 | 25±5 | 13±2 | 109 | 7m×25m |
| RAMG2218 | 500±10 | 25±5 | 13±2 | 128 | 8m×30m |
| RAMG2520 | 700±12 | 25±5 | 13±2 | 240 | 8m×30m |
| RAMG2822 | 1000±15 | 25±5 | 13±2 | 400 | 8m×40m |
| RAMG3024 | 1200±20 | 25±5 | 13±2 | 480 | 12m×50m |
| RAMG3428 | 1500±30 | 25±5 | 13±2 | 600 | 12m×60m |
| RAMG3830 | 1800±30 | 25±5 | 13±2 | 800 | 16m×70m |
| RAMG4032 | 2000±30 | 25±5 | 13±2 | 1000 | 18m×70m |
| RAMG4238 | 2500±30 | 25±5 | 13±2 | 1200 | 20m×80m |
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