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

Throughput: 300-400t/h

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

120000m3/min-165000m3/min, 110KW

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