The High-Strength Grinding Mill is a newly introduced type of grinding machine. Its grinding roller assembly is secured by high-pressure springs exerting a force of 1,000 to 1,500 kilograms; driven by the combined action of these high-pressure springs and centrifugal force, the rollers press tightly against the grinding ring to perform their operation. This machine features high output, low power consumption, a compact footprint, low operating costs, and pollution-free operation, making it particularly well-suited for desulfurization processes in large-scale thermal power plants and steelworks.
Suitable for the ultra-fine pulverization of over 280 types of materials—including barite, limestone, ceramics, and slag—across industries such as mining, metallurgy, chemicals, and building materials, provided they possess a Mohs hardness of no greater than 9.3 and a moisture content of less than 6%, and are non-flammable and non-explosive.
Upon startup, the grinding rollers rotate around the central shaft and, under the combined influence of high-pressure springs and centrifugal force, roll tightly against the grinding ring. As the material to be ground enters the grinding chamber, it is scooped up by blades and fed between the rollers and the ring for pulverization. Following this grinding process, the resulting powder is carried by the circulating airflow from the blower into the classifier; fine particles meeting the required specifications are then transported by the airflow into the cyclone collector to become the finished product, while oversized particles fall back down to be reground.
Compared to other mills of its class, the High-Strength Grinding Mill achieves a 10–20% increase in output under identical power conditions. Its design features significantly enhanced grinding roller pressure—reaching between 800 and 1200 kg—which, aided by high-pressure springs, enables more efficient pulverization of materials.
Utilizing a vertical, three-dimensional structural design, the unit occupies minimal floor space. It functions as a highly integrated, self-contained system capable of independently executing the entire production workflow—from raw material input to finished powder output—thereby boosting production efficiency and system integration.
The grinding mechanism incorporates a multi-layer sealing design to ensure superior airtightness, thereby minimizing pollution and material loss. Its dust removal system meets all prescribed dust emission standards, contributing to a clean production environment and safeguarding the health of workers.
The resulting finished powder exhibits exceptional fineness uniformity and boasts a screening pass rate of up to 99%, thereby guaranteeing the consistent quality and reliability of the final product.
| Parameter Model |
Raymond mill62 | High strength66 | High strength76 | High strength87 | High strength92 | High strength93 | High strength97 | Raymond mill4119 | Raymond mill4525 |
| Feeding size（mm） |
<15 | <15 | <20 | <25 | <25 | <25 | <25 | ≤25 | ≤30 |
| Size of finished product（mm） |
0.173-0.033 | 0.173-0.033 | 0.173-0.033 | 0.173-0.033 | 0.173-0.033 | 0.173-0.033 | 0.173-0.033 | 0.173-0.044 | 0.173-0.044 |
| Shift output of different material fineness(t) |
0.6-9 | 1-20 | 1.5-25 | 2.8-33 | 3-36 | 3.5-40 | 4-52 | 8-78 | 16-176 |
| Rotate speed of central shart（r/min） |
274 | 190 | 170 | 161 | 148 | 140 | 130 | 105 | 82 |
| Diameter of pulverizing ring（mm） |
525 | 725 | 850 | 907.5 | 973 | 1006 | 1050 | 1400 | 1770 |
| Diameter of pulverizing ring（mm） |
150 | 210 | 250 | 270 | 300 | 300 | 310 | 410 | 450 |
| Height of pulverizing roller（mm） |
100 | 150 | 150 | 150 | 160 | 160 | 170 | 190 | 250 |
| Main Motor(kw) | 7.5 | 15 | 18.5 | 22 | 30 | 30 | 37 | 75 | 132 |
| Fan Motor | 4-5.5 | 4-11 | 4-15 | 4-18.5 | 4-22 | 2-22 | 4-37 | 4-75 | 4-132 |
| Analyzer Motor | 6-1.1 | 6-2.2 | 6-2.2 | 6-2.2 | 6-2.2 | 6-3 | 4A-5.5 | 4B-7.5 | 4A-18.5 |
| Parameter Model |
Feeding size（mm） |
Size of finished product（mm） |
| High-strength97 | <25 | 0.173-0.033 |
| High-strength93 | <25 | 0.173-0.033 |
| High-strength92 | <25 | 0.173-0.033 |
| High-strength87 | <25 | 0.173-0.033 |
| High-strength76 | <20 | 0.173-0.033 |
| High-strength66 | <15 | 0.173-0.033 |
| High-strength62 | <15 | 0.173-0.033 |
| Raymond mill4119 | ≤25 | 0.173-0.044 |
| Raymond mill4525 | ≤30 | 0.173-0.044 |