Based on the accumulation of more than 30 years of field test data and experimental analysis, the Chinese mill manufacturer SBM has developed the fifth-generation pendulum roller grinding mill – MRN grinding mill. This mill can grind non-combustible, non-explosive and brittle mineral products with Mohs hardness below 7 and water content below 6%.
The grinding roller of MRN pendulum roller grinding mill is lubricated with thin oil. Maintenance-free, easy-to-operate domestic first technology. Thin oil lubrication is oil bath lubrication, without frequent refueling, more convenient than grease lubrication, and lower maintenance cost.
There is no scraper cylinder in the grinding chamber of the MRN pendulum roller grinding mill, the ventilation area is larger, and the air conveying resistance is smaller. In addition, the use of large diameter grinding rollers directly increases the efficiency of the mill.
Elastic volute damping structure can effectively reduce vibrating damage on the MRN Pendulum Roller Grinding Mill. Between the volute and engine base, special elastic structure is applied, and in combination with setup of rubber shock pad, it could directly avoid influence of vibration of engine base on operating stability of powder concentrator, and completely eradicate the problem of shatter crack of volute and central engine due to vibration of engine base.
Powder concentrator of MRN Pendulum Roller Grinding Mill adopts low-resistance hanging cage-type powder concentrator. The advantages of this powder concentrator lies in its high efficiency and low energy consumption. Processing same kind of materials and requiring same fineness, this powder concentrator needs less electricity but it can bring higher capacity compared to the blade-type powder concentrator.
There are tens of lines of numerical controlling machine tools. Operations such as steel plates’ cutting, bending, planing, milling and paint spraying are all controlled numerically. The machining precision is high, especially for the core parts.
SBM, whose businesses cover production and sales, takes responsibility for every machine produced by ourselves. We can offer customers technical services about products and original spare parts to ensure the worry-free operation.
| Model | MRN158 | MRN198 | MRN218 |
| Max. Feed Size(mm) | <40 | <45 | <50 |
| Final size(mm) | 1.6-0.045, fineness can reach to 0.038 |
1.6-0.045, fineness can reach to 0.038 |
1.6-0.045, fineness can reach to 0.038 |
| Capacity(t/h) | 7-21 | 12-33 | 15-45 |
| Main motor(kW) | 132 | 220 | 280 |
| Fan motor(kW) | 132 | 250 | 315 |
| Powder classifier motor(kW) | 22 | 37 | 55 |
| Model of electromagnetic vibrating feeder | GZ3F | GZ4F | GZ5F |
| Power of electromagnetic vibrating feeder(kW) | 0.45 | 0.65 | 0.65 |
Note:
Product pictures, parameters, models, data, performance, specifications, etc. on this website are for reference only. SBM may make changes to the above information. For specific information, please refer to the actual product and the user manual. In the absence of special instructions, SBM reserves the right to interpret all data involved in this website.
After hammer crushers (or jaw crushers) break large bulky materials to smaller ones, elevator works to send materials to material hopper. Then, by electromagnetic vibrating feeder, broken materials are evenly and quantitatively sent to the grinding chamber of MRN Pendulum Grinding Mill. After grinding, materials are blown away by airflow to the powder concentrator for classifying. Under the action of the impeller of powder selector, materials which fail to meet fineness would be sent back to grinding chamber to get another grinding while qualified powders would be collected by cyclone powder collector and discharged from the bottom as finished products. And, after that, the airflow would go into the fan along with the air return duct at the top of cyclone power collector. This system adopts a closed circuit and runs under positive and negative pressure.
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