SBM ygm coal mill is a new kind of grinding mill
SBM ygm coal mill is a new kind of grinding mill
SBM ygm coal mill is a new kind of mill, which is invented by our company chief engineer Mr Bai yinghui, who has been engaged in the research and development of grinding machine for many years. SBM coal mill is the main equipment of coal powder production system of thermoelectric power station, and it is also the essential equipment for drying and pulverizing coal power in cement plant. SBM coal mill can grind coal perfect. This new patent product with high efficiency and low energy consumption opened up an epoch of the international industry pulverizing.
In coal fired power plant, coal mill and ball mill is used to grind, pulverize and dry coal before the coal is transmitted the boiler. The coal is feed into the coal mill via a inlet pipe so that the roller coal mill such as Raymond mill and vertical mill can pulverize the coal into particles.
The ygm coal mill now sets the standard for coal grinding installations. The coal mill can handle all types of coal and is highly economical in terms of specific energy consumption. And the features and benefits introduce of our coal mill below :
1. Compact design, Simple structure, easy maintenance.
2. Grinds any type of coal and High crushing ratio.
3. Adaptable to specific process requirements .
4. High drying ability, reliable operation. 5. Long service life of grinding parts .
6. Reliable performance, low operation cost .
7. Easy maintenance.
8. Stable quality, convenient maintenance.
9. Low invest, high return .
Usually we grind coal into powder to improve the using efficiency. This way is common in Electric Power Plant. In this milling process, coal mill plays an important role.
Coal mill has many kinds, such as ball mill, raymond mill, vertical mill, ultrafine mill etc.
Ball mill is most widely used coal mill. It is suitable in the powder plant, and widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. It is divided into two rubbing way-the dry and the wet. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. The ball mill is a key equipment to grind the crushed materials after the material were broken , and carrying on the smashing again.
ball mill liners are mostly made of metal materials, but also a small amount of non-metallic materials. In addition to protect the cylinder liner cylinder, but also the movement of the grinding law of impact, in order to adapt to different working state (crushed or broken bits) requirements, lining the shape and material are also different. When the order to crush the main, require the lining of the grinding capacity of a strong elected body, while lining should have a good fighting performance. High manganese steel ZGMn13 have sufficient impact toughness, and dealt a blow when it is able to work hardening the surface becomes hard wear-resistant. Therefore, the main crushing mill cylinder liner are mostly high-manganese steel manufacturing.
Where the finely ground-based, the lining of the highlights on the relatively small body elected to the ground on the weak, the impact is smaller than strong abrasive. Require lining has a good wear resistance. Domestic mill mainly used for fine grinding cylinder liner materials are generally wear-resistant white iron, chilled cast iron, ductile iron and other rare-earth manganese. In recent years, widely used in rubber liner. Shape rubber lining rubber layering generally peaceful lining of two parts.
SBM ygm coal mill is mainly applied to the powder processing of mineral products in industries. Raw coal is fed through a central coal inlet at the top of the pulverizer and falls by gravity to the rotating grinding table, mixing with classifier rejects returned for re-grinding. Centrifugal action forces the coal outward to the grinding ring where it is pulverized between the ring and three grinding rollers.
Grinding load, transmitted from the tension rods through the loading frame to the roller assemblies, holds the rollers in contact with the grinding ring. The rollers adjust vertically as the depth of the coal load increases or decreases.A nozzle ring on the outside perimeter of the grinding ring feeds primary air to the pulverizer. Pyrites and tramp metal fall through the nozzle ring openings to be scraped into a rejects hopper.A stream of low-velocity air carries the particles of pulverized coal upward where they enter the classifier inlet vanes. Fine particles travel to the burners in the primary air stream, but the larger, heavier particles are returned to the grinding zone for further pulverization.
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