The document discusses coal ash ball mills, which are important auxiliary equipment for pulverized coal furnaces. It describes two main types of coal ash ball mills - ball mills and roller mills. Ball mills use steel balls to grind coal through crushing and grinding in one or two warehouses. Roller mills grind coal using grinding discs and rollers to pulverize coal which is then dried with hot air. The document provides details on the working principles and processes of these two coal ash ball mill types.

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coal ash ball mill
 2016-03-03
coal ash ball mill is the coal crushing and grinding coal machine, it is an important auxiliary equipment of pulverized coal
furnace. A vertical coal ash ball milling machine, high pressure suspension roller coal ash ball mill, ultrafine grinding,
grinding, Raymond coal ash ball mill overpressure ladder type.
Coal grinding process is a process of the coal is broken and the surface area increased. To add a new surface area, must
overcome the binding force of solid molecules, and therefore need to consume energy. Coal is made into pulverized coal
in the coal coal ash ball mill, mainly through crushing, crushing and grinding in three ways. The crushing process of the
energy consumption of the province. The ground energy fee. Various coal ash ball mill are both in the coal ash ball milling
process of the above two or three ways, but in what is regarded as the type of coal coal ash ball mill set.
Grinding coal machine type many, the massage speed of the working parts of the coal can be divided into three types,
namely a low-speed grinding coal machine, medium speed grinding coal machine and high speed coal coal ash ball mill.
working principle
Ball coal ash ball mill
This machine is a horizontal rotating device, outer gear, two warehouses, lattice type ball coal ash ball mill. Material from
the feed device feeding hollow shaft screw evenly into the coal ash ball mill first storehouse, the warehouse has stepped
lining board or corrugated liner, built in different specifications of steel balls, the cylinder rotation, the centrifugal force
generated the ball to a certain height after falling, the material to produce pounding and grinding. The material in the first
position to coarse grinding, the single compartment into the second warehouse, the warehouse linedwith flat lining, steel
ball inside, the material to further grinding. Powdered thedischargegratedischarge, finish grinding operation.
Roller coal ash ball mill
Electric motor through a speed reducer drives the grinding disc to rotate, material through the air lock feeder from the
feed inlet, fall in the center of the disc, while the hot air from the inlet into the ground. As the disc rotates, the material
under the centrifugal force, moving to the edge of the grinding disc, the annular groove grinding plate by grinding roller
rolling and grinding, the crushed material is brought up in the air ring high speed airflow grinding edge, large particles
directly onto the disc re grinding, the material flow of gas through the upper the separator, in the rotation of the rotor
under the action of coarse powder from the cone disc to re grinding, qualified fine powder with the airflow grinding,
through the dust collection device, which contains water products, the materials are in contact with hot air flow drying
process in, by adjusting the air temperature, humidity and can meet the needs of different materials requirements to
product moisture required. By adjusting the separator, can achieve the required thickness of different products.
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