Performance characteristics and working principle of horizontal roller mill Henan Hongxing


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Performance characteristics and working principle of horizontal roller mill

At present, in the domestic cement industry, the slag grinding equipment and system are mainly used Ball mill Open circuit system, ball mill + separator closed circuit system, ball mill + roller press system, vertical mill system, etc. Horizontal roller mill is a kind of superfine grinding which can be applied to slag. Its performance characteristics and working principle are described in detail below.

Performance characteristics

1) Energy saving. 50% of the energy consumption of football mill for producing the same material;

2) The equipment runs smoothly and the production index is stable. It is not necessary to change the wear-resistant materials frequently, and the roller surface has no effect on the output within the normal wear range;

3) Low wear, no abrasive body, no medium and less wearing parts;

4) Small floor area, short construction period (mill length is 1 / 3 of the same diameter ball mill);

5) Low noise, no need to prevent noise facilities;

6) The material circulates outside the mill, which is conducive to removing impurities, and has unique adaptability to materials with high iron content;

7) There is no need for water spraying and grinding aids;

8) The system flow is simple, which is helpful to improve the equipment operation rate;

9) Flexible process: the same equipment can produce different materials according to the market situation, and it only takes 10 minutes to convert the two materials.

Working principle of horizontal roller mill

After the material falls into the feeding area of the mill from the feed inlet, it is quickly attached to the inner wall of the cylinder under the action of centrifugal force, and is carried to the upper part of the cylinder. It is scraped down by the scraping device and slides down along the material guiding device. At the same time, it moves a certain distance towards the outlet of the mill before entering the extrusion grinding area. In the grinding area, in order to protect the mill barrel, a wear-resistant lining plate is laid on the inner wall of the barrel. The material is squeezed between the pressure roller and the liner plate. The extruded material rises to the top of the cylinder again and is scraped by the scraping device. After 4-6 times of extrusion, part of the material is directly extruded into fine powder, and the other part of the material particles have cracks. In the discharge area, the material is discharged from the mill through the discharge chute The final product is collected by the subsequent dust collector, and the coarse powder is returned to the feed end of the mill together with the raw material to be grinded again, so as to reciprocate.

The number of times the material is squeezed in the mill can be adjusted by adjusting the angle of the guide device, so as to ensure that the system can operate under the appropriate cycle load, and the grinding efficiency and the stability of the equipment can be improved.

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