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ZENITH Mining Machinery has professional production experience in grinding mill. With customer satisfaction as its main objective, it firmly grasps the development trend and Prospect of domestic ultra-fine powder industry. 

They actively develop new grinding equipment suitable for domestic ultra-fine grinding enterprises, especially new three-ring medium-speed micro-grinding machine and new vertical roller mill. This provides more choices for powder processing and meets the needs of different users. 

At the same time, the range of processing materials is more and more extensive. In the era of white-hot powder materials, powder processing equipment plays a huge role and keeps pace with the development of powder processing demand. 

It caters to the needs of customers and is well received by the market. It has become a landmark enterprise in the domestic grinding machinery manufacturing industry.


During the production and use of vertical roller mill, the circulation air duct will be blocked. Here,ZENITH reminds everyone to stop the material in time and check the cause of blockage of the air duct. After the inspection, the material can be ground. Powder production. What are the reasons for the blockage of the air duct, the following is a brief introduction.

Too much or too little material will cause the vertical roller mill to be insufficiently ground. The finished powder can not be discharged in the circulation duct under the action of the blower in time, thus increasing the working load of the blower, causing the material to accumulate in the air duct, eventually leading to the air duct. 

Blocked. Therefore, when feeding the vertical roller mill, ensure that the material is continuously and evenly distributed to avoid the phenomenon of air passage blockage.

1.Starting sequence of Vertical roller mill is: first to lubricating oil pump of vertical roller mill, when the oil pressure reaches 1.5-2.0 kg/cm, it is allowed to start the vertical roller mill, and then start the classifier. When everything is OK, we bagin to feeding.

2.Check the lubrication of the transmission parts of the gears, main bearings, classifiers, etc., and observe whether there is blockage and leakage of sand in front and rear end caps of vertical roller mill, simplified, discharge ore tank, overflow tank of classifier. And you often note the changes of nature of the ore to take timely appropriate measures in the light of the circumstances.

3.In the operation of vertical roller mill, we must always pay attention to bearing temperature, shall not exceed 50-65℃. you should always pay attention to the motor, voltage, current, temperature, sound and lubrication system, temperature of oil in the tank should not exceed 35-40℃. The pressure to the tubing should be maintained at 1.5 to 2.0 kg/cm2.

Coal vertical roller mill is a machine that crushes and grinds coal into pulverized coal. It is an important auxiliary equipment of pulverized coal furnace. 

The vertical mill is a horizontal cylindrical rotating device driven by external gears. Material from the feed device enters the mill evenly through the feed hollow shaft helix. 

Installed with steel balls of different specifications, the centrifugal force generated by the rotation of the cylinder will bring the steel ball to a certain height and then drop, which will have a heavy impact and grinding effect on the material. The powder is discharged through the discharging grate to complete the grinding operation. 

Crushing principle of coal vertical roller mill Low-speed coal vertical roller mill It is mainly drum vertical mill, generally referred to as coal vertical roller mill. It is a rotating cylinder or conical drum with steel balls in it.


The main part of the vetical roller mill is a rotary cylinder mounted on two large bearings and horizontally placed. The barrel is divided into several compartments by a partition board, and a certain shape and size of the abrasive body is installed in each warehouse. 

The vertical mill is generally made of steel balls, steel forgings, steel bars, pebbles, gravel and porcelain balls. In order to prevent the cylinder from being worn, the lining wall is installed inside the cylinder body.

When the vetical roller mill turns, the grinding body is attached to the lining surface of the inner wall of the cylinder, which is attached to the lining surface of the inner wall of the cylinder, and is taken to a certain height (as shown in Figure 1) under the action of the friction force produced by the centrifugal force and the lining surface of the inner wall of the cylinder. 

The maintenance of the Raymond mill is a very important and regular work. It should be closely coordinated with the operation and maintenance of the machine.

1. The equipment shall be installed on a horizontal concrete foundation and fixed with anchor bolts.

2. During installation, attention should be paid to the vertical between the main body and the horizontal body.

3. After installation, check whether the bolts in all parts are loose and whether the main engine warehouse door is tightened. If so, please tighten it.

4. Power line and control switch are configured according to the power of the equipment.

5. After the inspection, carry out empty load test. If the test is normal, the production can be carried out.

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