The company's main products are HGM series micro pulverizer, superfine micro pulverizer, micro pulverizer, superfine pulverizer, pulverizer and matching hammer crusher, etc.
24/07/2026 clirik
The HGM series ring roller micro-powder mill (also known as the three-ring medium-speed ultrafine grinding mill) is a core piece of equipment widely used in the processing of non-metallic mineral ultrafine powders. It is suitable for processing brittle materials with a Mohs hardness ≤6, such as calcite, limestone, dolomite, barite, talc, and graphite. This equipment adopts a three-ring grinding structure, using a rotary table to drive multiple ring rollers for crushing and pulverizing. The fineness of the finished product can be flexibly adjusted between 5-47μm (325-2500 mesh). In the long-term operation of the HGM series mill, the material and manufacturing process of the components directly determine the equipment’s production efficiency, operational stability, and overall operating costs. The following is a detailed introduction to the main components of the HGM ring roller micro-powder mill.
The grinding roller is the core grinding component of the HGM mill, directly undertaking the task of crushing and pulverizing materials. Depending on the specific working conditions and material characteristics, the grinding rollers are available in three material versions:
Standard Version—Alloy Steel, Forged: Made of high-quality alloy steel through forging, it possesses excellent comprehensive mechanical properties and is suitable for routine grinding of materials of general hardness, offering high cost-effectiveness.
High-End Version—Bearing Steel, Forged: Made of bearing steel through precision forging, this material has a dense structure, high hardness, and excellent wear resistance, making it suitable for grinding highly abrasive materials such as hard ores. In actual projects, HGM mainframes using upgraded bearing steel have been successfully applied in the industrial production of high-silicon and highly abrasive materials.
Wear-Resistant Version—High Chromium Alloy, Casting: Cast from high chromium alloy, it exhibits excellent resistance to abrasive wear. High chromium alloy material has high hardness and outstanding wear resistance, making it particularly suitable for crushing and processing high-hardness materials such as granite, feldspar, and iron ore.
The grinding ring is a key component that works in conjunction with the grinding rollers to complete the grinding process. Material is crushed and pulverized between the grinding rollers and the grinding ring. Grinding rings are available in two materials: a standard version (forged alloy steel) and a high-end version (forged bearing steel). The high-end version offers higher impact resistance and wear resistance, making it suitable for ultrafine grinding of high-hardness ores. The grinding rollers and grinding ring are forged from special materials. Under the same material and finished product fineness conditions, the service life of their vulnerable parts is 2-5 times longer than that of impact crushers and turbine crushers, generally exceeding one year. When processing calcium carbonate and calcite, the service life can reach 2-5 years.
The lower step shaft pin is an important connecting component between the grinding rollers and the turntable, bearing the shear and impact loads during the operation of the grinding rollers. This component is available in two materials: a standard version (alloy steel) and a high-end version (bearing steel), both directly machined from round steel. The bearing steel shaft pin has higher strength and fatigue resistance, making it suitable for harsh conditions of high load and high speed.
The rotary table is the core rotating component driving the grinding rollers’ revolution. Depending on the configuration, it comes in two structural forms:
Cast Rotary Table – Made of a single piece of cast iron, offering high structural strength and suitable for conventional operating conditions.
Combined Rotary Table (Welded Wear-Resistant Plate) – A high-end version, with wear-resistant plates welded to key areas of the rotary table, significantly improving its wear resistance and service life, suitable for long-term continuous production of highly abrasive materials.
The classifier impeller is a key component controlling the fineness of the finished product. It generates centrifugal airflow through rotation to precisely separate powders. Depending on different operating conditions, the impeller is available in three material versions:
The discharge valve, located at the bottom of the cyclone dust collector, is responsible for uniformly discharging the collected finished powder. Although simple in structure, this component is crucial for the continuity and sealing of finished product collection, a vital link in ensuring stable production line operation.
The HGM ring roller micro-powder mill’s accessory system covers the entire production process from grinding and classification to discharge. Different combinations of materials and processes provide users with flexible choices—from alloy steel configurations for standard operating conditions, to high-chromium alloy wear-resistant configurations for high-hardness materials, and high-end bearing steel solutions for demanding conditions, fully meeting the personalized needs of different material characteristics and production scenarios. The selection of high-quality accessories not only extends equipment lifespan and reduces downtime maintenance frequency but also effectively improves grinding efficiency and reduces the production cost per unit of powder, a crucial guarantee for the efficient, stable, and economical operation of the HGM series mills.
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