High Capacity High Quality Coal Vertical Mill 90t/h Vertical Coal Grinding Equipment

Product Descripition:

HVM vertical mill is a product with independent intellectual property rights launched by Hefei Hengcheng in combination with modern grinding technology. The equipment is widely used in industries such as cement, electricity, metallurgy, and chemical engineering, and focuses on three major fields: non-metallic minerals, coal powder, and slag.

The outstanding advantages of vertical coal mill
01 Cleaning and Environmental Protection
The entire system adopts fully negative pressure operation, reliable sealing, no dust overflow, and clean environment. The finished product collection adopts a bag type dust collector, with a dust removal efficiency of up to 99.9%, which is higher than the latest national environmental protection standards; The limit device of the HVM mill ensures that the grinding disc and roller do not come into contact during operation, resulting in low vibration and noise.
02 High yield and energy-saving
High grinding efficiency, low energy consumption, saving 30% -50% of electricity consumption compared to ball mills. Excellent roller disc structure design, long grinding curve, and large grinding area; The limit device prevents direct contact between the grinding roller and grinding disc, resulting in less wear on the grinding roller sleeve and lining plate; The grinding roller sleeve can be flipped over for use, doubling its service life; Equipped with a hydraulic loading system, the grinding pressure can be flexibly adjusted according to changes in grindability, resulting in high yield and energy saving.
03 High degree of automation, simple operation and maintenance
Adopting a fully automatic control system, remote control can be achieved, which is simple and convenient; The limit device prevents direct contact between the grinding roller and the grinding disc, and can be started with no load without the need to apply fabric before starting up; External independent thin oil lubrication station, convenient for oil product replacement. The reducer and grinding roller bearings are lubricated with forced thin oil, which not only takes away a large amount of heat but also improves the service life of the reducer and grinding roller bearings; The hydraulic maintenance device can easily make the grinding roller flip out of the machine, and the replacement and maintenance of the grinding roller sleeve are convenient and fast.
04 Product quality is stable and reliable
Adopting a dynamic and environmentally friendly powder selection machine, with concentrated particle size distribution, good particle shape, variable frequency speed regulation, and convenient adjustment of product fineness; At the same time as grinding, the finished product is selected in a timely manner to reduce the residence time and cycle times of the material in the grinder, resulting in low pollution and high quality of the finished product.
05 Low comprehensive investment cost
Due to the integration of grinding, grading, drying, and conveying, the process flow is simple, the layout is compact, the footprint is small, and it can be arranged outdoors, reducing construction costs; Equipped with a drying function, it can be heated with hot air and directly and repeatedly dry in contact with powdered materials inside the mill, saving a set of drying equipment. By adjusting the temperature of the hot air, it can meet the drying requirements of materials with different humidity levels, and can dry materials with a maximum humidity of up to 15%.

Working principle:

The electric motor drives the grinding disc to rotate through the reducer, and the material falls into the center of the grinding disc from the feeding port. At the same time, hot air enters the grinding chamber from the air inlet. Under the action of centrifugal force, the material moves towards the edge of the grinding disc and is crushed by the grinding roller when passing through the circular groove on the grinding disc. The crushed material is carried by the high-speed airflow at the edge of the grinding disc by the wind ring, and the large particles directly fall onto the grinding disc for re grinding. When the material in the airflow passes through the dynamic and static separator, the coarse powder falls onto the grinding disc and is ground again under the action of the rotating rotor. The qualified fine powder is ground together with the airflow and collected in the powder collection device, which is the product. Materials containing moisture are dried in contact with hot gas to achieve the required product moisture content.

Parameter Table of Coal Vertical Mill