HLM high pressure vertical mill is also called HLM vertical mill. It is a high-efficiency and energy-saving advanced grinding equipment that integrates drying, crushing, grading and conveying, which has been developed by Guilin Hongcheng Company for more than 20 years.
1. Main structure of high pressure vertical roller mill
The working principle of the high-pressure vertical roller mill is solely from the main engine of the high-pressure vertical roller mill. For the entire high-pressure vertical roller mill to perform continuous and high-speed grinding, the cooperation of multiple components is required, which consists of multiple components, such as the base to fix the grinding disc, the rocker to fix the grinding roller, and the hydraulic device to pressurize and conduct the grinding roller, set the feeding port, the discharge port, the explosion-proof device and the powder separator, the air inlet and outlet.
2. A production line composed of a complete set of high-pressure vertical roller mills
The high-pressure vertical roller mill production line is mainly composed of high-pressure vertical roller mill host, crusher, feeder, classifier, blower, piping device, storage hopper, electric control system, collection system, etc. The working principle of the high-pressure vertical roller mill is analyzed from the entire production line, mainly for the whole process of ore from crushing to pulverizing, to powder collection and packaging.
The working principle of the high-pressure vertical roller mill is explained by the entire grinding production line. The crushed materials are fed into the main machine of the high-pressure vertical roller mill through the conveying equipment, and then the motor at the bottom of the high-pressure vertical roller mill drives the reducer to drive When the grinding disc rotates, the material is fed into the center of the rotating grinding disc by the feeding equipment. Under the action of centrifugal force, the material moves to the periphery of the grinding disc of the high-pressure vertical roller mill and enters the grinding roller table. Next, the material is squeezed, ground and pulverized. At the same time, the hot air is sprayed upwards evenly at a high speed from the air ring around the grinding disc, and the pulverized materials are blown up by the high-speed airflow at the air ring. The material is dried, and the fine powder is brought into the grading machine by hot air for classification. The qualified fine powder flows out of the mill along with the air flow, and is collected by the dust collection equipment as the product. The product enters the packaging machine and is bagged for the next step. The unqualified coarse powder falls back to the grinding table under the action of the blades of the classifying machine, and is re-ground together with the newly fed material. This cycle completes the whole grinding process.
3. Advantages of high pressure vertical roller mill in mineral processing
(1) Low overall investment cost
The whole production line of high pressure vertical roller mill integrates crushing, drying, grinding, grading and conveying. The construction cost is low, which directly reduces the investment cost of the enterprise.
(2) Easy maintenance and low operating cost
The grinding roller of the high-pressure vertical roller mill can be turned out of the machine by a hydraulic device. The replacement of the roller sleeve lining plate and the maintenance space of the mill are very convenient, and the maintenance operation is very convenient; Life; no need to put cloth on the grinding disc before starting up, and the mill can be started without load to avoid the trouble of difficult starting; low wear, the grinding roller and grinding disc lining are made of special materials, and the service life is long.
(3) Stable product quality
The mineral material stays in the high-pressure vertical roller mill for a short time, and it is easy to detect the particle size distribution and chemical composition of the product, reducing repeated grinding, and the product quality is stable; the product particle shape is uniform, the particle size distribution is narrow, and the fluidity is good. Strong property; the iron content in the product is very small, and the mechanical wear iron contained in it is easy to be removed. When used for grinding white or transparent materials, the product has high whiteness and purity.