High grinding efficiency and low operation cost.

A. The coarse powder mill adopts the material layer grinding principle to grind materials, with low energy consumption. The power consumption of the grinding system is 20 ~ 30% lower than that of the ball mill, and the power saving effect is more remarkable with the increase of raw material moisture.

B. The abrasive body has small wear and high utilization rate. Since there is no direct contact between metals during the operation of the coarse powder mill, the wear of the grinding body is small, and the wear per unit product is generally 5 ~ 10 g / T, which has little metal pollution to the product.

C. One machine with multiple functions: the machine and supporting equipment form a closed-circuit production line, which can produce products of various sizes. D. Low failure rate: the plate hammer structure is more stable and lasting than the sealed Raymond mill.

Low construction and investment costs.

The coarse powder mill integrates fine crushing, drying, grinding, powder selection and transportation without additional drying, powder selection and lifting equipment. The dust containing gas from the mill can be directly collected by high concentration bag dust collector or electric dust collector. The layout is compact and can be arranged in the open air. The building area is about 70% of the ball milling system, and the building space is about 50 ~ 60% of the ball milling system. Therefore, the coarse flour mill has the advantages of simple process flow, small floor area and space, which makes the construction cost low.

The product quality is stable and the particle grading is uniform. The residence time of materials in the coarse powder mill is only 2 ~ 3 minutes, while it takes 15 ~ 20 minutes in the ball mill. Therefore, the chemical composition and fineness of coarse powder mill products can be measured and corrected quickly, and the quality is stable.

Easy and reliable operation, simple operation and maintenance.

A. It is equipped with rare lubrication station, and the grinding roller bearing adopts thin oil centralized circulating lubrication to ensure that the bearing works under the conditions of low temperature and pure oil quality, prolong the service life, and make the equipment operation system operate continuously and reliably.

B. Equipped with automatic control device, remote control can be realized, and the operation is simple and easy.

C. It is equipped with a limit mechanism to prevent direct contact between the roll sleeve and the grinding disc lining plate, so as to avoid destructive and violent vibration caused by friction and collision between metals and increase safety.

The equipment has large drying capacity and a wide range of grinding materials. The coarse powder mill adopts hot air to transport materials. When grinding materials with large moisture, the inlet air temperature can be controlled to make the products meet the required final moisture. Materials with moisture up to 15% can be dried in the coarse powder mill, which has a wide range of applications. Even for drying and ball milling, only materials with moisture of 3-4% can be dried.

The equipment is environmentally friendly, with low noise, less dust and clean operating environment. During the operation of the coarse powder mill, the grinding roller and the grinding disc are not in direct contact, and there is no metal impact sound of steel balls colliding with each other and steel balls colliding with the lining plate in the ball mill. Therefore, the noise is low, 20 ~ 25 dB lower than that of the ball mill. In addition, the coarse powder mill adopts a fully sealed system. The system operates under negative pressure, no dust and clean environment.

European plate coarse grinding is mainly composed of casing, rotor, bearing iron, grate and other components. The casing is divided into upper and lower parts, which are welded after cutting by steel plate, and the other parts are connected into one by bolts. The casing is inlaid with high manganese steel lining plate, which is easy to replace after wear; An array of hammers with regular distribution are installed on the main shaft to form a rotor with the rotary table and the hammer threading shaft. The main machine drives the main shaft through the motor and V-belt, so as to rotate the rotor. The hammer head is extended around by the centrifugal force generated during rotation. After large materials enter the crushing chamber from the feed inlet, they are crushed by the high-speed hammer. The qualified crushed materials are discharged from the cracked castor bar at the lower part, and the unqualified materials are left in the crushing chamber and repeatedly acted by hammer and bearing iron block until they can be discharged qualified. In order to avoid blockage, the water content of the crushed material is generally not more than 20%.