In industrial production, coal powder serves as an important fuel and raw material, and its grinding fineness and output directly affect subsequent production efficiency and cost control. Whether in the power, building materials, or chemical sectors, the demand for conventional fine coal powder with 45μm particle size is growing steadily.

The HCM mill's 74μm lignite powder project has recently commenced operations. Utilizing the HC series 1700 Raymond mill developed by HCM Mill, this lignite grinding process achieves 74μm fineness with a 15t/h output. The resulting 74μm lignite powder, characterized by its fine particle size and high reactivity, is compatible with multiple industries requiring precise material fineness, including

The smallest models of HCM Raymond mills are HC800 and HC1000. The HC800 small Raymond mill has 3 grinding rollers, the nominal diameter of the grinding ring is 800mm, the maximum feed particle size is ≤15mm, the grinding ore output is 0.3-3t/h, and the power of the whole machine is 49.5kw. The HC800 small Raymond mill grinds activated carbon to 45μm, with an hourly output of about 1.2 tons;

The HCM grinding mill project for producing ultra-fine calcium carbonate powder is progressing smoothly. The project uses the HCM grinding mill HLMX1800 ultra-fine vertical mill to grind calcium carbonate to 35μm, with a production capacity of 16-25t/h, meeting the client's requirements. The particle size of the feed material for the HLMX1800 ultra-fine vertical mill is <10mm, with moisture content ≤5%. The fineness of the finished product is 5-22um (with a secondary classification system for 3-5um), and the production capacity is 9-22t/h, with a main unit power of 450KW. According to available information, by the end of 2024, the global total annual production capacity of ultra-fine active calcium carbonate is approximately 21.8 million tons. Among them, China leads with a production capacity of 9.8 million tons, accounting for 45% of the global total. The United States ranks second with an annual production capacity of approximately 2.8 million tons, accounting for 12.8%. Germany has a production capacity of approximately 1.85 million tons, accounting for 8.5%. Japan has a production capacity of approximately 1.3 million tons, accounting for 5.9%. India has developed rapidly in recent years, with its production capacity rising to approximately 1.1 million tons, accounting for 5.0%.

Recently, the limestone grinding project of HCM grinding mill, a manufacturer of China grinding mills, has been successfully put into operation. The material of this project is limestone, which is ground to a size between 80μm and 45μm using the HCM vertical mill, with a production capacity of 25t/h to 40t/h, meeting the customer's production capacity requirements.

HCM grinding mil produces HLM series vertical mills, HLMX series ultra-fine vertical mills, HC series Raymond mills, and HCH series ultra-fine ring roller mills, capable of grinding marble to 3-180 microns. The mill models are customized according to production line capacity requirements, with output ranging from 1 ton to dozens of tons. Below are selected engineering cases of HCM grinding mil's marble powder production equipment.

The HCM grinding mill is designed to grind limestone to 45-micron mineral powder using the HCM Raymond Mill HC2000. Featuring 4 grinding rolls and a 2000mm diameter grinding ring, this equipment can process limestone with particle sizes ≤40mm, producing fine powder with a fineness of 38-180 microns at a capacity of 10-35t/h. The HC2000 model achieves a production rate of approximately 19t/h for limestone grinding to 45 microns, meeting operational requirements. With stable performance, minimal vibration, low noise, dust-free operation, and energy efficiency, this grinding mill delivers high output and low energy consumption, making it the ideal choice for limestone processing.

Graphite powder production line equipment-HCM Guilin Hongcheng Large Vertical Mill: Capable of dry grinding graphite to produce coarse powder (80-400 mesh) and superfine powder (325-3000 mesh). This vertical mill features high grinding efficiency and low energy consumption, achieving 40-50% energy savings compared to ball mills. With its large single-unit production capacity, it significantly enhances production efficiency and reduces overall costs for graphite powder manufacturing. Below are production case studies and specifications of HCM Guilin Hongcheng Graphite Vertical Mill

Guilin Hongcheng dry method ceramic raw material powder production equipment factory learned that a mining company in Yichun annual output of 80,000 tons of lithium feldspar powder production of micro powder brick, wear-resistant brick ceramic billet fabric project passed the completion acceptance. Yichun lithium porcelain stone is extremely rich in mineral resources, excellent raw ore quality, rich in Li, K, Na and other elements, lithium feldspar is the indispensable main solvent raw material of ceramic embryo glaze. After crushing, grinding, magnetic separation, flotation, thickening, dehydration and other processes, the final products such as lithium polymicite are obtained. Lithium feldspar powder can be used in various ceramic fabrics such as high-grade fine powder brick, stone line brick, cloth brick, antique brick, ultra-white wear-resistant brick and other ceramic fabrics and other industries.