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Raymond roller mill
High Pressure Grinding Mill( Raymond roller mill ) Application
It is mainly applied to the powder processing of mineral products in the industries of metallurgy, construction materials, chemical, and mining, etc. High Pressure Grinding Mill(grinding Mill) can produce powder from various non-flammable and non-explosive mineral materials whose Mohs hardness is below 9.3 and humidity below 6%, such as barite, limestone, kaolin, ceramics and slag, etc. The Product size is adjustable in the range of 80-425 mesh. It is possible to produce 30-80 mesh coarse powder through special device in the machine if necessary.
Products photos
High Pressure Grinding Mill( Raymond roller mill )Technical Advantage:
1)Compared with other mills under the same conditions, such as power production increased 10-20%, roller grinding pressure on the material under high pressure spring to improve YGM High Pressure Suspension Grinder series of 800-1200kg.
2) Mohs hardness of less than 9.3 processing of mineral materials can be crushed.
3) A wide range of product particle size, particle size of the most up to 0.613 millimeters thick (30 mesh), particle size usually ranging from 0.033 millimeters (425 mesh), a small number of the finest materials up to 0.013 millimeters (1000 mesh)
4)Dedusting effect fully meet the national dust discharge standard.
5)Analysis of machine adjusted to facilitate
6)Grinding device overlapping multi-level seal, sealing performance is good.
Detailed photos of high pressure grinding mill
Working principle Of The High Pressure Grinding Mill( Raymond roller mill ):
The whole system of High pressure Grinding Mill consists of main frame, decelerator, classifier, piping device, blower, jaw crusher, dustpan elevator, electromagnetic vibration feeder, and electric switch box , motor, etc.
1) Materials are firstly crushed by the jaw crusher; then the crushed materials is transferred to a hopper by the elevator and fed uniformly, quantitatively and continuously by the vibration feeder in the grinding chamber of the main frame for grinding. The grinding particles are brought up by the air current of the blower into the classifier for classification. The particles with the required fineness are brought up by the air current through the pipe into a cyclone collector for separation and collection and the finished particles are discharged from a pipe outlet.
2) Due to some moisture contained in the materials to be grinded, the heat resulting from grinding leads to the vaporized air which changes the airflow volume. Moreover, the outside air inhaled from the narrow gaps, of the piping connections can increase the volume of air current. Therefore, it is necessary to adjust to redundant air pipe between the blower and the main unit for keeping the balance of the air current. The redundant air is then guided into a cloth bag of a dust cleaner to collect the fine powder in the air. And the redundant air is discharged after purification.
3) the main unit runs with a central shaft is driven by a transmission device. The top of the shaft is connected with a quincunx stand, on which a grinding roller is installed to form a swing support, the grinding roller not only rotates around its own axis due to the friction, it also rotates around the ring.
Working site photos
4) The classifier performs the function of classifying the particles by the rotation of blades on the disk driven by a speed-adjustable motor. The rotation speed of the blades is regulated according to the particle size of the finished powder. The coarse particles drop because of self-gravity into the grinding chamber for regrinding. The qualified particles go through the blades and are inhaled by the air current into the cyclone. Then the particles are separated from the air current and collected.
5) The cyclone collector plays an important role in the performance of the grinding mill. Because the core of the upward rotating air current is in state of negative pressure, the lower part of the collector must meet a very strict requirement of sealing and be isolated entirely form the outside air. Otherwise, the collected particles will be taken away by the central air current, which will directly influence the output of the complete system. Therefore, a powder-locking unit is installed under the collector. Its is a very important component. If the powder-locking unit has not strict sealing, the output of the complete system will be seriously influenced with no or less production of the finished powder.
High pressure grinding mill ( Raymond roller mill ) Specifications:
| Model | Roller | Ring | Feeding size (mm) | Fineness of Product (mm) | Power for machine (kw) | |||
| Number | Diameter (mm) | Height | Inside Diameter (mm) | Height (mm) | ||||
| YGM7815 | 3 | 260 | 150 | 780 | 150 | <15 | 0.613-0.033 | 18.5 |
| YGM8515 | 3 | 270 | 150 | 850 | 150 | <20 | 0.613-0.033 | 22 |
| YGM9518 | 4 | 310 | 180 | 950 | 180 | <25 | 0.613-0.033 | 37 |
| YGM4121 | 5 | 410 | 210 | 1280 | 210 | <30 | 0.613-0.033 | 75 |
| YGM4528 | 6 | 450 | 280 | 1600 | 280 | <35 | 0.613-0.033 | 132 |
Note: This specification is just reference, any changes are subject to the products.
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Spare parts: roller and ring
130 5R raymond mill/grinding mill