250,000 TPA Clean Coal Powder! Liming Heavy Industry LM Vertical Mill Illuminates Carbon Reduction Path for Northeast China's Industry

China's energy endowment features "Abundant Coal, Scarce Oil, and Limited Gas", coal serves as a crucial energy source supporting industrial operations in China, yet the high pollution and low efficiency associated with traditional coal combustion have become major hurdles to the industrial green transition. The emergence of high-efficiency boiler coal powder preparation technology offers an effective solution: raw coal is ground to a fineness of 200 mesh, impurities are removed, and the processed powder is injected into boilers via burners. This approach achieves high burnout efficiency, easy ignition, and significantly reduces ash content and pollutant emissions. Liming Heavy Industry's LM Series Vertical Coal Mills, with their stable and reliable powder production capacity, provide robust support for industrial clean coal utilization.

250,000 TPA EPC Turnkey Project

As a key national old industrial base, Northeast China is densely populated with energy-intensive industries such as iron and steel, chemicals, and building materials, which have an urgent demand for industrial steam and thermal energy supplied by coal-fired boilers. High-efficiency clean coal powder technology, boasting a combustion efficiency exceeding 90% and pollutant emissions far lower than those of traditional chain grate boilers, has become an "indispensable support" for production and residential heating in the region.

Processing Material: Coal

Fineness: 200 mesh

Application: Fuel for High-Efficiency Coal Powder Boilers

Equipment: Liming Heavy Industry LM Vertical Coal Mill

250,000 TPA EPC turnkey project for high-efficiency boiler supporting coal powder preparation, since its commissioning, the project has continuously and stably supplied high-quality coal powder, ensuring the thermal energy supply for key surrounding industries. From safeguarding residential heating during harsh winters to supporting the continuous production of enterprises, it has effectively reduced fuel costs and practiced green production through low emissions, emerging as a "power engine" for the safe and smooth operation of the regional industrial chain and supply chain.

LM Vertical Mill: A Safe Foundation for Grinding Excellence

Backed by nearly 40 years of experience in grinding equipment R&D and manufacturing, Liming Heavy Industry's LM Vertical Coal Mill clean coal powder preparation system integrates crushing, grinding, drying, and classification into one through innovative process design, achieving efficient, safe, and environmentally friendly full-process production from raw material to finished product. The equipment is innovatively equipped with "five-level safety explosion-proof measures," establishing a fire and explosion protection system covering the entire area, the whole process, and all monitoring points, providing comprehensive guarantees for the safe and stable operation of the system.

Raw coal is screened through a grid sieve from the raw coal yard and then conveyed to a steep-angle belt conveyor or elevator. After iron removal by an electromagnetic iron remover, the raw coal is transported to the raw coal silo for storage via the belt conveyor or elevator. Once all systems of the powder preparation line are started, the rod valve at the bottom of the raw coal silo is opened, and the sealed metering belt coal feeder is activated to feed the raw coal into the vertical coal mill for drying and grinding.

Hot air or waste gas from the hot blast stove is drawn into the vertical coal mill by the system fan. After sufficient heat exchange with the ground raw coal inside the mill, the air stream carries the coal powder to the separator for classification. Coarse coal powder that fails to meet the fineness requirement falls back onto the mill disc for re-grinding, while qualified coal powder is collected by the explosion-proof pulse jet bag filter along with the air flow and discharged into the coal powder silo through the rotary airlock valve.

Impurities in the raw coal, such as some gangue and metal blocks, are discharged out of the mill through the air ring and slag discharge port. Throughout the entire process, an online CO-O₂ analysis system is installed. When processing coal with high volatility, safety measures such as nitrogen protection and an automatic CO₂ fire extinguishing system can be configured.

Liming Heavy Industry's EPC Turnkey Services

Liming Heavy Industry provides customers with EPC turnkey services, offering one-stop support throughout the entire process—from project planning and design, equipment selection and configuration, to installation, commissioning, and post-operation maintenance. Leveraging rich project experience in the field of grinding equipment manufacturing, we have successfully facilitated the efficient implementation of multiple clean coal powder preparation projects supporting boilers, achieving dual optimization of project construction cycles and operational costs.

Looking ahead, Liming Heavy Industry will continue to strengthen equipment capabilities through technological innovation, continuously optimizing clean coal powder preparation solutions from safety protection to efficiency improvement. We firmly believe that every steadily operating LM Vertical Coal Mill is a faint light illuminating the carbon reduction path of Northeast China's industry. When countless faint lights converge, they will ultimately brighten the broad road of green transformation for the old industrial base, painting a new picture of coordinated development between energy security and ecological protection.