LM Series Vertical Coal Mill
Introduction:
Coal from the coal yard after being sieved by the lattice screen
and then fall on large inclined angle belt conveyor or elevator.
The electromagnetic removes iron, belt conveyor or elevator will send the coal into the
storage hopper. The milling system has been started, then open the
rod valve at the bottom of the hopper, start sealed & weighted belt feeder ,
raw coal goes into the vertical mill for drying and grinding. The
hot air or waste gas from hot blast stove, in the fan system of pumping and goes
into vertical coal mill, and fully exchanges the heat with grinding
coal in the vertical mill, flow the powder to air classifier and to be separated, and
unqualified coarse powder falls into the grinding table to be
grinded again, qualified coal powder will goes into the explosion proof air box pulse dust
collector with the airflow and being collected, through the grid
round are discharged into the powder bunker. The debris in the raw coal, such
as partial coal gangue, metal block, etc., will be discharged out
through the wind ring, spit slag . In the process of production, there are
oxygen and carbon monoxide detection device, when grinding the
highly volatile coal, there is a nitrogen system and carbon dioxide fire extinguishing
system, safe and reliable.
Vertical Coal Mill Working Principle:
Full set of vertical mill consists of: main unit, bucket elevator,
adjustable hopper, sealed constant feeder, air heating furnace,
dust remover, blower and silencer.
The motor drives the grinding table to rotate by reducer, and the
hot air goes into the inner part of machine at the same time. The
materials fall down to the center of grinding table from feed opening. Driven by
the centrifugal force, materials move evenly to the edge of the
grinding table, and they are grinded by the rollers when going through the rollers’
track. Bulk materials are crushed, while fine materials form
material bed after being squeezed and experience intergranular crushing. Grinded
materials move on to edge of the grinding table until being taken
away by strong airflow at the wind ring, in which larger materials fall to the
grinding table by gravity and reground. The others enter the
separator being graded. Under the influence of separator blades, materials that do not meet
fineness requirements return to the grinding table to be grinded,
while the standard ones go into dust collector through the pipes and are
discharged as finished products from the discharge device. Irons
and other impurities, which cannot be lifted by the wind for weight, move
together with materials to the edge of grinding table and fall to
the lower cavity, and then they are scraped i1 Setnto the slag discharge opening by
stripper plate which is fixed at the bottom of the grinding plate
and discharged out of the machine.
LM Series Coal Vertical Mill Technical Parameters:
| Model | LM1100 | LM1300 | LM1500 | LM1700 | LM1900 | SLM2200 |
| Capacity(t/h) | 9~14 | 13~18 | 17~22 | 21~31 | 30~40 | 40~50 |
| Raw Coal Moisture | <15% |
Coal Powder Fineness
200(mesh) | Percent Passing≥90% |
| Coal Powder Moisture | <=1% |
| Inlet Temperature (℃) | <350 |
| Outlet Temperature (℃) | 75~95 |
| Raw Coal Hardgrove Index (HGI) | >55 |
| Main Unit Power (kw) | | 250 | 315 | 400 | 500 | 630 |
Related Products:
Portable Jaw Crusher&Impact Crusher
Cone Crusher&Sand Making Machine
Impeller Sand Washer&Spiral Sand Washer
Apron Feeder Breaker&Scraper Feeder Breaker
Coal Crushing Plant&Banana Screen
Crawler Type Mobile Crushing Plant&Trailer Type Mobile Crushing
Plant
Linear Vibrating Screen&Circular Vibrating Screen
Vibrating Feeder&Belt Feeder
Training System:
Provide professional staff training for customers
- Service engineer offers spot training and production line operation
manual.
- After-sales personnel visit customers on a regular basis.
- Design engineer provides professional service for customers for
free.
Company Information:
