Liyuanheng Delivers Advanced Raymond Mill Production Line to Inner Mongolia Fluorspar Mining Project

1. Industry Momentum: Inner Mongolia’s Fluorspar Mining Enters a Golden Development Period

In the spring of 2026, before the ice and snow of northern China had fully melted, mineral resource development in Inner Mongolia had already sounded the opening note of a vigorous new chapter. From Xilingol to Ordos, from Bayan Obo to Ejin, a large-scale wave of mining development has been surging across northern China.

In the fluorspar sector, several key projects were intensively advanced in the first quarter of 2026. The Baogang fluorspar comprehensive utilization project continued to gain momentum, with a planned investment of RMB 1.933 billion. After completion, it is expected to recover more than 800,000 tons of fluorspar concentrate annually for fluorochemical applications, making it the largest fluorspar and fluorochemical industry base in China and even globally. On March 27, the integrated mining, beneficiation, and tailings project in the No. 3 mining area of the Chagannuoer Yingxiang fluorspar mine in Abaga Banner was officially launched, with a total investment of RMB 517 million, an annual mining and beneficiation capacity of 300,000 tons of raw fluorspar ore, and projected annual output of 86,300 tons of FC-97 fluorspar concentrate and 45,000 tons of FL-80 lump ore. On March 12, the beneficiation plant project of the Bayanaobao fluorspar mine operated by Baodeli Mining Co., Ltd. in Sonid Right Banner entered the environmental impact assessment publicity stage. The plant is designed to process 300,000 tons of raw fluorspar ore annually and produce 18,000 tons of lump ore and 72,100 tons of powder concentrate. On March 8, the environmental report for Hongde’s newly built 500,000 tons/year fluorspar processing plant entered the proposed approval stage, with annual output of 228,850 tons of fluorspar powder concentrate and a CaF₂ content of no less than 98.57%. On April 14, Ongniud Banner actively promoted precise exploration of small and medium-sized fluorspar mines, with estimated additional reserves of 500,000 tons in 2026.

Against the backdrop of rising mining development, demand for high-quality grinding and processing equipment from mining enterprises is becoming increasingly urgent. The project undertaken this time is precisely the grinding production line upgrade for a large fluorspar mining enterprise in Xilingol League. The client’s original equipment was outdated, with insufficient capacity and relatively high energy consumption, creating an urgent need for a modern Raymond mill system featuring stable operation, adjustable fineness, and energy-saving, environmentally friendly performance. After comparing multiple domestic and international equipment suppliers, the Liyuanheng LYH998 series Raymond mill successfully won the bid thanks to its advanced technical specifications and excellent cost performance.

2. Liyuanheng: Precision Equipment Builds Brand Strength

Nantong Liyuanheng Machinery Co., Ltd. was established on May 9, 2012, and is registered at No. 169 Renmin West Road, Dagong Town, Hai’an City, Jiangsu Province. It is a national key high-tech enterprise specializing in grinding equipment solutions. The company has modern workshops, advanced production equipment, sophisticated testing instruments, and a scientific, rigorous quality system, with an annual manufacturing capacity of 100 complete sets of grinding equipment. Its production base is located in the transportation hub of the Yangtze River Delta, benefiting from integrated road, rail, and waterway logistics that cover the core economic region of eastern China.

As an innovation pioneer in China’s powder equipment manufacturing industry, Liyuanheng has always adhered to technology-driven development. To date, the company holds a total of 154 patents, including 146 utility model patents and 8 invention patents. Around the LYH998 Raymond mill series, the company has built a comprehensive product matrix covering multiple product lines, including the LYH998 new intelligent eco-friendly Raymond mill, the LYH996 new intelligent ring roller mill, and the LYH1008 vertical grinding mill.

In 2026, Liyuanheng further accelerated its pace of technological innovation. In February, the company obtained a patent for an “adjustable Raymond mill” (Patent No. CN223931519U), a technology that allows flexible adjustment of the distance between the grinding roller and grinding ring, enabling powders of different fineness levels to be produced to meet diverse production needs. On April 4, the company obtained another patent titled “Raymond mill with shock absorption effect” (Patent No. CN224072186U), which can buffer vibrations generated during machine operation and material crushing, while reasonably redirecting the remaining vibration energy to other directions, preventing excessive concentration of vibration on critical components. The successive implementation of these two patents has further strengthened Liyuanheng’s technological moat in the Raymond mill field.

3. LYH998-175A: Technical Decoding of the Core Model

The main model delivered to the Inner Mongolia client is the core unit in the LYH998 series carefully developed by Liyuanheng — the LYH998-175A new intelligent eco-friendly Raymond mill. The “175” represents the technical specification of its core component, the 175-type dedicated reducer for Raymond mills. The self-developed 175-type reducer is specifically customized for this operating condition, with precise parameter matching for an input power of 37–45 kW and an output torque and speed range of about 140 rpm, perfectly aligning with equipment load and installation interfaces. It offers strong impact resistance and is well suited for the intermittent heavy-load vibration conditions of Raymond mills. The gears are made of forged medium-carbon alloy steel with surface quenching treatment, achieving a tooth surface hardness of HRC58–62 and improving pitting and wear resistance by more than 50%. The composite sealing system, combining a skeleton oil seal and labyrinth seal, effectively blocks the high-dust environment of grinding workshops, with a protection level of IP65. Transmission efficiency is no less than 96%, gear precision reaches ISO Grade 7, and precision grinding of the gear teeth reduces meshing friction loss.

In terms of overall machine technology, the LYH998 series adopts many advanced technologies including integrated bevel gear transmission, negative pressure operation principle, air-lock device, pulse dust collection system, internal thin-oil lubrication system, and curved air ducts, reaching an internationally advanced level. The air-lock feeder ensures both sealing performance and uniform feeding. The turbine classifier greatly improves classification precision and mesh stability, while increasing output by 20–30% compared with blade-type classifiers. The pulse dust collector creates a true negative-pressure operating system with no dust leakage, safeguarding environmentally compliant production. The internal thin-oil lubrication system easily lubricates both the main shaft bearings and gear shaft bearings, eliminating the need for an additional oil pump or lubrication station.

At the intelligent control level, the LYH998 adopts the Siemens S7-200 PLC central integrated control system, enabling fully automatic operation and control of the grinding production line, greatly improving convenience and production efficiency. The finished product fineness range covers 60–600 mesh, output can reach 3.5–25 tons per hour, and installed power ranges from 55–160 kW, allowing flexible adaptation to the processing needs of different mineral materials.

The model is particularly ingenious in wear-resistant design. Compared with ordinary Raymond mills, Liyuanheng’s machine body plate thickness is increased from 8–10 mm to 14–16 mm, and the plate material is upgraded from Q235 to Q345, significantly enhancing rigidity and stability while reducing noise by 30%. The main shaft and grinding roller shaft are forged, with denser structure, greatly improved strength, and longer service life. Special wear-resistant materials are used, offering a service life twice that of ordinary materials. The grinding rollers are made of high-chromium alloy steel through centrifugal casting, with hardness exceeding HRC62. The blade edge is separately made from highly wear-resistant alloy material and can be replaced individually. The curved blade design guides material to the vertical surface, enabling the upper, middle, and lower parts of the grinding roller and grinding ring to contact the material evenly, resulting in uniform wear.

4. A Journey Across Miles: The Industrial Expedition from Hai’an to Xilingol

In mid-March 2026, as magnolias quietly bloomed across the Jianghuai Plain, Liyuanheng’s installation team had already entered an intense stage of shipment preparation. From Hai’an in Jiangsu to the mining area in Xilingol League, Inner Mongolia, the full journey exceeded 1,500 kilometers. Thanks to the company’s favorable location and highly convenient road, rail, and water transportation network, the Inner Mongolia project adopted an integrated logistics solution of “road transport + rail transport + road transport.” The equipment was first transported by road from the Hai’an factory to Tianjin, where it was consolidated, then shipped by rail through Hebei and Shanxi into Inner Mongolia, and finally transferred onto heavy-duty trucks to cross the vast grasslands and reach the Xilingol mine. The route spanned multiple climate zones, with a transportation cycle of about 10 days.

Liyuanheng established a comprehensive risk management system for equipment transportation. All components underwent professional anti-rust packaging treatment, with a dual protection plan of vacuum film and desiccants, and particularly strict sealing protection for precision components. The complete LYH998-175A Raymond mill production line included more than ten major components, such as the jaw crusher, elevator, storage hopper, grinding main unit, centrifugal induced draft fan, pulse dust collector, cyclone separator, screw conveyor, and intelligent electrical control system. Photos and videos were recorded during the loading of each container to ensure everything was foolproof.

In late March, the convoy carrying the equipment arrived smoothly at the mining site. The Mongolian client representative had been waiting early at the mine entrance and warmly shook hands with the project manager of the installation team, saying excitedly, “We have waited all winter, and finally the equipment from Liyuanheng has arrived.”

5. Grassland Breakthrough: Full Record of the Standardized Installation Process

From late March to April 2026, spring was just beginning to show in the mining area of Xilingol League, Inner Mongolia, but daytime temperatures still hovered between -5°C and 5°C, while gusts of wind frequently stirred up sand across the grassland. Liyuanheng’s installation team, consisting of 6 members — including the project manager, mechanical engineer, electrical engineer, and two installation technicians — threw themselves into work immediately upon arrival.

On-Site Verification and Unpacking Inspection

The installation team and the Inner Mongolia client jointly carried out unpacking inspection. According to the detailed packing list, all equipment, spare parts, special tools, and technical documents were checked one by one to ensure there were no shortages or transportation damage. Since the mining area lies deep in an arid grassland region and spring sandstorms are frequent, the team paid particular attention to verifying the integrity of sealing protection for precision components.

Foundation Reinspection and Positioning Layout

Using precision spirit levels and theodolites, the installation team strictly rechecked the foundation already constructed by the client, including coordinate position, elevation, levelness, and reserved anchor bolt holes, to ensure compliance with the drawings. Liyuanheng’s technical team repeatedly verified the data together with the local construction personnel, and after confirming accuracy, carried out centerline marking to provide a precise benchmark for equipment positioning.

Hoisting and Positioning of Main and Auxiliary Equipment

With the assistance of professional lifting personnel at the mine site, the Liyuanheng team strictly followed the sequence of “main unit first, auxiliary units second” during hoisting operations. The grinding main unit weighed over 20 tons, so the team planned the lifting route and load-bearing points in advance to ensure the entire process remained safe and stable. The classifier, fan, elevator, feeder, and other auxiliary machines were then hoisted one by one into their designated positions. During the lifting process, the team paid special attention to protecting finely machined surfaces and protruding components from collision damage.

Notably, on the second day of hoisting, a strong sandstorm from the Gobi grasslands of Inner Mongolia suddenly struck, drastically reducing visibility, and lifting operations had to be suspended. The whole team immediately shifted to equipment inspection and protective reinforcement, tightly covering electrical control cabinets and precision parts with waterproof cloth to prevent sand intrusion. After the storm passed and the site was cleaned, hoisting work quickly resumed and all positioning was completed on schedule.

Precise Leveling and Fixing

This was the most technically demanding stage of the entire installation process. Using a high-precision frame level, the Liyuanheng team centered on the grinding main unit and gradually adjusted the levelness and coaxiality of all equipment, ensuring the grinding roller shaft was vertical, the plum blossom frame was level, and the fan and motor shafts were precisely aligned. All dimensional errors were strictly controlled within the millimeter range. After the adjustment was completed, anchor bolts were grouted and fixed, and final tightening was carried out after the cement strength reached the required standard.

Pipeline Connection and Sealing

The connection of inlet and outlet air ducts and feeding pipelines proceeded simultaneously. All flange connections were effectively sealed with high-quality sealing materials to ensure there was no air leakage or powder leakage in the system. The pipeline routes were designed to be as smooth as possible and to minimize bends, thereby reducing system resistance and improving fan efficiency. At the same time, the installation of the pulse dust collector and cyclone separator was also successfully completed, forming a true negative-pressure operating environment.

Electrical System Installation and Wiring

Liyuanheng’s professional electricians carried out electrical construction strictly in accordance with the electrical schematic and wiring diagrams, including laying cable trays, installing distribution cabinets, and connecting all motors, sensors, and control components for the main unit, fan, classifier, and other systems. Wiring was firm and clearly labeled. Installation of the Siemens S7-200 PLC control system was especially critical, and the team performed meticulous programming and debugging to ensure full realization of one-button startup and fully automatic operation. Considering that voltage fluctuation in the Inner Mongolia mining area can be relatively large, the team also installed an additional voltage stabilizer to ensure stable operation of the electrical control system.

Comprehensive Inspection and No-Load Trial Run

After all installation work was completed, the team carried out a systematic comprehensive inspection, checking whether all fasteners were tightened, whether lubricating oil had been filled according to standards, and whether transmission components operated flexibly and reliably. After confirming everything was in order, the no-load trial run was started. The main unit was run idle for no less than 1 hour to examine operating stability, bearing temperature rise, and vibration values of all transmission parts. The overall vibration value of the Liyuanheng Raymond mill was controlled within 2 mm/s, far better than the national standard requirement of 5 mm/s, and its stability and reliability were at a leading level in the industry.

Load Debugging and Finished Product Inspection

After the no-load trial run passed inspection, the process entered the most critical stage: load debugging with material. The material was lifted by the shovel blade and fed between the grinding roller and grinding ring, where it was crushed through the high-speed rolling action of the grinding roller. The ground powder rose with the airflow generated by the fan into the classifier for grading, and powder meeting the fineness requirement entered the cyclone collector through the pipeline for separation and collection. By repeatedly adjusting the classifier speed and air volume parameters, the final product fineness was stabilized at the client’s required 200 mesh, and hourly output reached the design target. After on-site sampling and testing, the client’s quality inspection personnel repeatedly nodded in approval.

6. Deep Bonds on the Grassland: A Joint Symphony of Mongolian and Han Engineers

During the nearly one-month installation and commissioning period, the Liyuanheng team overcame many difficulties. Spring on the Inner Mongolia plateau is marked by frequent sandstorms, large temperature differences between day and night, and bitter winds sweeping across the open wilderness, all of which posed considerable challenges to outdoor operations. Yet not a single member of the team retreated. From the project manager to the mechanical and electrical engineers, every individual demonstrated a high degree of professionalism and dedication, embodying the working spirit of the Liyuanheng team.

As Liyuanheng has consistently upheld during the project: “The true value of equipment lies not only in its parameters, but in its actual performance during installation and use.” From foundation construction to equipment commissioning, every step was carried out in an orderly manner, showcasing Liyuanheng’s ultimate pursuit of detail.

The mine owner also provided full cooperation. Engineers and technicians from Inner Mongolia arrived at the site early every day, preparing hot tea for the team and helping move tools. Although the two sides spoke with different accents, communication on technical issues remained smooth through professional terminology and hand gestures. During breaks, Mongolian friends treated their Jiangsu counterparts to traditional milk tea and hand-held mutton, while laughter in two dialects echoed around the bonfire at the worksite. The head of the Liyuanheng installation team remarked emotionally, “During our time in Inner Mongolia, I truly understood the meaning of precision collaboration and unity across north and south.”

7. The Future: Continuing a New Chapter with Craftsmanship

In mid-April 2026, after nearly one month of intensive and orderly work by the Liyuanheng installation team, the LYH998-175A Raymond mill production line at the Xilingol mining area in Inner Mongolia successfully completed its first material feeding in a single attempt and was officially handed over to the customer for operation. During trial production, the equipment operated stably, product quality remained consistent, and dust emissions met the required standards, earning high praise from the client. At the acceptance ceremony, the client representative stated, “Nantong Liyuanheng has not only provided us with advanced grinding equipment, but has also won our trust through professionalism and sincerity.”

This project was an important stop in Nantong Liyuanheng Machinery Co., Ltd.’s 2026 spring installation season, and also a reflection of how Chinese powder equipment manufacturers are deeply cultivating the northern frontier of the country. “First be a good person, then do good work” is the motto of the company’s chairman, Mr. Ding Qingping. Since its establishment, the company has consistently upheld the core values of “creating value for customers, benefits for the enterprise, opportunities for employees, and wealth for society.” Liyuanheng cares deeply for its customers, fully respects them, thinks about what they think, and responds urgently to what they need. From the coast of the Yangtze River to the vast grassland hinterland, the people of Liyuanheng have used craftsmanship to stay true to their original aspiration, building strong bridges of cross-regional industrial cooperation through one finely made machine after another.

In the future, as mining development in Inner Mongolia continues to advance and the fluorspar industry flourishes, more high-quality Raymond mills from Nantong Liyuanheng will enter this vast land. With craftsmanship preserving the original mission and precision driving the future, Liyuanheng will continue to write a new chapter of north-south industrial cooperation on the industrial blueprint of China’s northern frontier.