|Steel slag final vertical grinding||Roller mill+ Ball mill grinding|
|Host||GRM34.31 steel slag vertical mill
Main motor power: 1800kw
Powder separator power: 160kw
|G140-80 roller press, power: 2x560kw
Φ3.2x13m ball mill, power: 1600kw
|Auxiliary machine||CCLF-2x13 air box pulse
Powder collector 240000m3/h
|Cycle boost: NE300, 300t/h, 75kw
V-type separator: 140000-200000m3/h
|Main fan Full pressure 9kPa Power 800kw||Grinding lift: TGD315, 60t/h, 18.5kw
High efficiency separator
|Hot air stove 8000000 kcal/h||Hot air stove 8000000 kcal/h|
|Steel slag vertical grinding system||Roller mill+ Ball mill system|
|Environmental||Grinding, drying, powder selection and conveying are integrated.
There is basically no dust pollution.
The system runs quietly.
|The external circulation of the system is large.
There are many lifting and conveying processes.
Special attention needs to be paid to the dust.
The system is running quietly.
|Raw material moisture adaptability||The material bed is ground and can adapt to the high moisture content of the material ≤15%.||Sensitive to moisture, requires material moisture≤6.5%.|
|Repair and maintenance||Roller and disc maintenance generally uses online surfacing, which takes 4 to 6 days;
Vertical mill open layout, easy to replace the roller cover
|Roller surface wear online welding, it takes 8~10 days;
Roller surface shedding is more common, and it is necessary to remove the roller for offline repair and surfacing, which is difficult to maintain.
|The system equipment has few links, the failure rate is extremely low, and the operation rate is greater than 95%.||There are many links in the system equipment, the circulation volume is large, the load on the machine is large, and the risk of failure is large, and the operation rate is about 90%.|
|Item||Comparison project||Energy consumption data|
|Steel slag vertical grinding mill||Roller mill+ Ball mill grinding|
|1||Raw material||Steel slag ≤ 10mm, iron content ≤ 1.5%|
|2||Design yield, fineness||50t/h、≥430m2/kg|
|3||Actual operating output||45~55t/h||40~50t/h|
|4||Total installed power||3000kw||3575kw|
|5||Tons of installed power||3575kw||79kwh|
|6||Tons of operating power consumption||~50kwh||~65kwh|
|Annual electricity saving (0.7 yuan / kwh)||~315 million||0|
|7||Tons of metal consumption||14g||50g|
|8||Tons of maintenance costs||0.38||4.27|
|9||Ton daily maintenance fee||0.14||0.19|
|Annual maintenance and maintenance costs||~105million||0|