Vertical Raw Mill For Sale

Vertical Raw Mill For Sale

The vertical raw mill is a process in which the stress and the cohesive force between the particles are overcome by impact, extrusion and grinding under the action of external force, so that the massive materials become fine powder. According to different production methods, raw grinding can be divided into wet grinding and dry grinding. Wet raw grinding system can be divided into open circuit and closed circuit, but the open circuit system is the main one. Generally, long tube mill or medium long mill is used for open circuit, and arc screen and long tube mill are used for closed circuit to form a primary closed circuit system. With the emergence and development of suspension preheating kiln and outside kiln decomposition kiln technology, dry raw grinding mostly develops into a closed-circuit system of simultaneous drying and grinding.

With the rapid development of grinding machine R & D technology, the vertical grinding technology of foreign grinding machine manufacturers has become increasingly mature, and the technical advantages of vertical grinding products are increasingly prominent. In this situation, SBM absorbed the successful experience of foreign countries, carried out major technical reform, and successively re launched its own vertical mill products with relevant patent technology, and gradually accepted by the domestic cement, power and chemical industry, becoming the recommended grinding equipment for the industry.

Application of vertical raw mill

In recent years, the technology of producing slag micro powder with vertical mill is common in recent years, and develops rapidly, which is recommended for various iron and steel companies. Due to the progress of science and technology, the vertical mill gradually overcomes the shortage of vibration and material wear, and is gradually used in the production of slag powder. The specific surface area of its products is generally 420-450m2 / kg, but generally no more than 500m2 / kg, otherwise it is easy to intensify the wear and vibration of grinding parts such as grinding plate and grinding roller. heavy industry science and technology vertical mill adopts reasonable and reliable structure design and advanced technological process, which integrates drying, grinding, powder selection and upgrading. Especially in large-scale slag grinding process, it fully meets the needs of customers, and its main technical and economic indicators reach the international advanced level.

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Characteristics of vertical raw mill

  • ● High grinding efficiency. With the advanced material layer grinding principle, the power consumption of the system is 20-30% less than that of the ball mill. With the increase of the moisture content of the raw material, the power saving effect is more significant.
  • ● Large drying capacity. The material can be dried by using the hot air and waste gas of the kiln, and the material with moisture up to 15% can be dried and ground at the same time.
  • ● The equipment covers a small area and the process flow is simple. Vertical mill integrates fine crushing, drying, grinding, powder selecting and conveying, and does not need other equipment such as drying, powder selecting and lifting. The workshop area only accounts for 70% of the ball milling system, and the space only accounts for 50-60%.
  • ● Low noise, less dust and clean operation environment. There is no direct contact between the grinding roller and the grinding plate, no metal impact, and the noise is 20-25db lower than that of the ball mill. The system adopts the full sealed negative pressure operation, no dust and clean production environment;
  • ● Low abrasion, small metal pollution of products, metal abrasion is generally only 5-10g / T.
  • ● The roller sleeve of the grinding roller can be turned over for use, which is conducive to prolonging the service life and reducing the production cost. Convenient operation and maintenance;
  • ● The chemical composition of the grinding product is stable and the particle grading is even, which is conducive to calcination.