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[China]
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Address: 15th Fl, Bldg No.13, National University Science Park(East), No.279, West 3# Ring Rd, Zhengzhou, China
Contact name:Andrew
Henan Zhengzhou Mining Machinery CO.Ltd |
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Lower Investment Vertical Roller Mill / Vertical Grinding Mill Energy Saved
Operation of the Mill and its Description:
After the mill is started in the starting sequence, the material is fed at the set value, the hydraulic system is operated to drop the grinding roller, the oil pump motor of the hydraulic station is turned on, the working pressure of the hydraulic system is adjusted to balance the system, and the separator rotor speed should be adjusted to make The fineness of the product meets the requirements.(The specific method is to first adjust the separator to a higher speed, and adjust the rotor speed according to the product sampling analysis results to obtain the required fineness).
During operation, the temperature of the gas entering and exiting the mill should be adjusted according to the moisture content of the material. The greater the moisture content of the material, the higher the temperature of the gas entering and exiting the mill, but the highest temperature of the milling gas should not exceed 300°C.
Note: 1. If the thin oil station runs continuously for 5 minutes without abnormal conditions, the mill can be started in the order of driving;
2.After the roller is lifted to the highest position, the main motor of the vertical mill starts, and after running together for 5 minutes without abnormal conditions, the feed command of the vertical mill system starts, and the material reaches the mill at time t1 (time t1 is determined by the site). Start the roll down action, 40s after the roll down action starts, start the roll pressure control program, that is, press the set pressure to automatically execute the pressure and automatically execute the pressure and pressure operation;
Start of the Pulverized Coal Vertical Mill System:
Startup: Lubrication system (Thin oil station) motor → Separator motor (frequency conversion motor) → Roller lifting → Main motor → Feeding and falling roller → Hydraulic system motor (pressurizing).
Normal Shutdown Process of Pulverized Coal Vertical Mill System:
Shutdown: Stop material command start----Feeding operation stop----Start roll lifting operation----Vertical mill main motor stop----Oil station operation stop----Hydraulic station stop
Emergency Shutdown:
Mill stop----Stop material command start----Feeding operation stop----Start roll lifting operation----Hydraulic station stop
| Model | Grinding plate(mm) | output(t/h) | output(×10kt/a) | Main motor power(kW) | |||||
| diameter | Pitch | blast furnace slag | cement | Raw meal | blast furnace slag | cement | Raw meal | ||
| ZKRM08.2 | 1200 | 800 | 1.5~2 | 3~4 | 6~8 | 1.5 | 3 | 5.5 | 55 |
| ZKRM11.2 | 1500 | 1100 | 3~4 | 5~6 | 10~12 | 3 | 4.5 | 9 | 110 |
| ZKRM13.2 | 1700 | 1300 | 8~9 | 11~13 | 20~22 | 6 | 9.5 | 17 | 185 |
| ZKRM15.2 | 1900 | 1500 | 9~10 | 14~16 | 26~34 | 8 | 12 | 24 | 250 |
| ZKRM17.2 | 2100 | 1700 | 12~14 | 20~23 | 40~50 | 10 | 17 | 36 | 355 |
| ZKRM19.2 | 2300 | 1900 | 15~17 | 24~26 | 50~60 | 13 | 20 | 43.5 | 450 |
| ZKRM20.2 | 2400 | 2000 | 18~20 | 27~30 | 60~75 | 15 | 22.5 | 55 | 560 |
| ZKRM22.3 | 2600 | 2200 | 23~25 | 40~50 | 85~110 | 20 | 35.5 | 77 | 710 |
Remarks: the basic standard for vertical mill is as follow:
(1)Power consumption:slag≤25kWh/t,cement≤18kWh/t,raw meal≤9kWh/t；
(2)Moisture content:slag≤15%,cement≤3%,raw meal≤7%；
(3)Ffinished product fineness: specific surface area of slag 4200~4500cm²/g,specific surface area of cement 3300~380 cm²/g,raw meal fineness-80μmR 12~15%；
(4)Moisture content of refined powder:slag 0.5~1.0%,cement 0.5~1.0%,raw meal 0.5~1.0%；
(5)The specific installed capacity and parameters can be adjusted properly according to actual material nature.
(6)The above parameters are applicable for granular blast furnace slag, cement and raw meal and the model selection is determined by material property.
