Key to Improving Magnesium Smelting Efficiency: Liming Heavy Industry's High-Quality Pulverized Coal Preparation Solution

China accounts for 70% of the world's magnesium ore reserves, endowing it with inherent advantages in developing the magnesium material industry. Magnesium and magnesium alloys, featuring properties such as light weight, high strength, thermal conductivity and corrosion resistance, have become an ideal choice for high-end industries including aerospace, industrial manufacturing and medical equipment. They are praised by the industry as "green engineering materials with both development and application potential in the 21st century".

High-Quality Pulverized Coal: The Cornerstone of Magnesium Smelting

In the magnesium smelting process, dolomite, as the core raw material, needs to be calcined at high temperature in a rotary kiln to produce calcined dolomite. This key process requires continuous, stable, efficient and environmentally friendly pulverized coal as fuel support to ensure the rotary kiln can achieve uninterrupted continuous production. The stable supply of high-quality pulverized coal is not only related to the quality of calcined dolomite products, but also directly affects the operation efficiency of the entire production line. To obtain such high-quality pulverized coal, advanced grinding equipment is indispensable.

Efficient and Clean Pulverized Coal Preparation Project

In the early stage of this project cooperation, Liming Heavy Industry set up a professional technical team to go deep into the frontline of production, conduct on-site inspections of the construction conditions for the magnesium smelting production line, and accurately grasp the customer's core demands in terms of continuous production, energy consumption control and environmental compliance.

Based on demand analysis, the technical team adopted the LM Vertical Coal Mill as the core grinding equipment and formulated a detailed solution. This solution fully takes into account the actual on-site working conditions, and focuses on systematic design from aspects such as the stability and reliability of the equipment, energy conservation and environmental protection, and maintenance convenience.

Processing Material: Coal

Finished Product Fineness: 200 Mesh

Application: Rotary Kiln Fuel

Equipment: Liming Heavy Industry LM Vertical Coal Mill

Project Implementation & Operation Performance

During the project implementation process, the technical team innovatively designed the production line layout based on on-site conditions, maximizing the efficiency of the LM Vertical Coal Mill within limited space and providing reliable guarantee for continuous and stable operation. By closely integrating technological innovation with practical application, the team created a clean pulverized coal preparation solution that not only conforms to actual production needs but also features technological foresight.

Since this production line was put into operation, significant improvements have been achieved in product quality, operation efficiency and environmental performance. The high efficiency and stability of pulverized coal preparation have exceeded the customer's expectations, and the emission indicators are better than environmental protection requirements, fully meeting and surpassing the customer's expected demands.

Clean Pulverized Coal Preparation Process

Raw coal is screened through a grid screen from the raw coal stockyard, then falls onto a steeply inclined belt conveyor or elevator. After iron removal by an electromagnetic iron remover, the raw coal is transported to the raw coal bunker for storage via the belt conveyor or elevator. Once the pulverizing system is fully started, the rod valve at the bottom of the raw coal bunker is opened, and the sealed metering rubber belt coal feeder is activated. The raw coal then enters the LM Vertical Coal Mill for drying and pulverizing.

Hot air or waste gas from the hot blast stove is drawn by the system fan into the vertical coal mill. After sufficient heat exchange with the raw coal being pulverized inside the mill, the hot air carries the pulverized coal to the separator for classification. Coarse pulverized coal with unqualified fineness falls back onto the grinding disc for re-pulverizing, while qualified pulverized coal is carried by the air flow into the explosion-proof plenum pulse dust collector to be collected. Subsequently, the qualified pulverized coal is discharged into the pulverized coal bunker through the rotary airlock valve. Impurities in the raw coal, such as part of the gangue and metal blocks, are discharged out of the mill through the air ring and slag discharge port.

Selection and Advantages of Pulverized Coal Preparation Equipment

LM Vertical Coal Mill is specially developed for clean pulverized coal preparation. It integrates crushing, grinding, drying and classification functions, and is compatible with various raw materials such as anthracite, bituminous coal, lignite, semi-coke, coke and petroleum coke. It features flexibly adjustable processing fineness, stable and reliable operation, and achieves high output under low energy consumption.

To ensure safe production, the equipment is innovatively equipped with a "five-level safety explosion-proof measure", constructing a fire and explosion-proof system that covers the entire area, runs through the whole process and monitors all source points. This provides comprehensive guarantee for the safe and stable operation of the system, establishing a good reputation in the industry and becoming a trusted high-quality choice for many enterprises.

EPC Turnkey Service for Pulverized Coal Preparation Projects

Liming Heavy Industry provides customers with EPC turnkey services for pulverized coal preparation projects, offering one-stop service throughout the entire process—from project planning and design, equipment selection and configuration, to installation, commissioning, and subsequent operation and maintenance. Relying on its rich project experience in the field of grinding equipment manufacturing, the company has promoted the efficient implementation of multiple fuel preparation projects for metal smelting rotary kilns, creating high-standard and high-benefit pulverized coal preparation production lines for customers and achieving multiple optimizations in project construction cycles and operation costs.

Liming Heavy Industry is committed to providing high-quality, intelligent and clean pulverized coal production equipment for global customers. Based on its independently developed integrated solution for clean pulverized coal preparation, the company realizes a clean, environmentally friendly, safe, efficient, intelligent and high-yield pulverizing process, which strongly supports the high-standard development needs of the non-ferrous metal industry for clean energy and refined management. With technological innovation as the core driving force and green development as the fundamental principle, Liming Heavy Industry continues to empower the upgrading of the magnesium industry and jointly build a new height for the "magnesium" brilliant cause.