Titanium pigment is a white pigment mainly composed of titanium dioxide. Due to its unique physical properties and chemical properties, it is an important white pigment and ceramic glaze. It is widely used in coatings, plastics, ink, paper and other fields. 

Due to its high whiteness and high hiding power, it has been widely used in cosmetics in recent years. The production line of titanium white powder mainly has broken system, powder grinding system, conveying system, etc. We will briefly introduce the vertical roller mill

The main dust collector of the bag filter increases the air volume in the circulating airflow, and at the same time removes the dust particles in the airflow, and purifies the increased exhaust air volume and discharges it outside the vertical roller mill.

When the bag filter cannot perform the dust removal operation normally, then there will be a large amount of dust particles. The material accumulates in the air duct, causing blockage of the air duct. Therefore, it is necessary to stop the inspection of the bag filter in time to ensure the normal operation of the bag filter.

Insufficient power of the fan will result in insufficient air volume, and the material will flow normally in the air duct, which will also cause material accumulation.

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.

At last, when stop the vertical roller mill, first to stop the feeding machine. After the ore treatment is finished, stop the vertical roller mill motor, and finally stop the pump. Use the lifting device of the classifier to lift the spiral out of the sand surface, and then stop the classifier.

This is daily Operation and Maintenance of Ball Mill, if you have other queation about vertical roller mill, please connect with us.

The speed of the drum is 15-25 rpm. The steel ball in the working cylinder continuously impacts and extrudes the coal block, and grinds the coal block into ultrafine mill. Then the coal is dried by hot air into the drum and the ultrafine mill is sent out. 

After separation by the separator, the ultrafine mill with a certain size is sent into the ultrafine mill bin or directly into the ultrafine mill burner. Steel vertical mill is bulky, high power consumption and noisy, but it is suitable for grinding hard anthracite because of its wide range of adaptability and reliable operation. 

Medium-speed coal vertical roller mill The speed ranges from 50 to 300 rpm, and there are many kinds. Common mills are flat disk mill, bowl mill, E-type mill and roller mill. Their common feature is that the grinding parts are composed of two groups of relatively moving grinding bodies. Coal blocks are crushed between the surfaces of the two groups of grinding bodies. 

It will fall freely under the action of gravity, and the abrasive body will be crushed like the projectile. The cyclic movement of the rising and falling of the grinding body is recurrent. In addition, in the process of vertical roller mill, the grinding body also produces sliding and rolling, so the grinding body, the lining plate and the material will be lapping, so that the material is fine.

Due to the continuous feeding of new materials at the feed end, there is a material difference between the feed and the discharge end material, which can force the flow of material. And when the grinding body falls, the impact of the material produces axial thrust, which also forces the material to flow.

In addition, the movement of air in the mill also helps the material flow. Therefore, although the barrel of the mill is horizontally placed, the material can flow slowly from the feed end to the discharge end and finish the grinding operation.

Raymond Mill Common failure 1

Low yield or without flour

Reasons: (1) The powder lock has not been adjusted properly and the seal is not tight, which causes powder inversion. (2) The shovel knife is worn out and the material cannot be shoveled. Removal methods: (1) Check and adjust the seal of the powder locker, and find that the air leak should be shoveled. (2) Replace the new spade.

Raymond Mill Common failures 2

The finished powder is too coarse or too fine. The causes are: (1) The blades of the analyzer are worn seriously and can not be classified. (2) The air volume of the fan is inappropriate. Removal methods: (1) Change the blade length properly and turn off the air intake of the small fan to solve the problem of excessive coarseness. (2) Import air volume should be increased if excessive fineness is required.

Raymond Mill Common failures 3

The main current rises and the fan current falls. Causes :(1) excessive feeding, air duct blocked by powder, pipe exhaust is not smooth, circulating air heating makes the main current, machine temperature rises, fan current drops. Removal methods: (1) Reduce the amount of feed and remove dust accumulation in the air duct. (2) Open the excess air duct valve, and control the temperature of the material entering the machine below 6 ℃.

Ultrafine Vertical Roller Mill: https://www.gravelmill.com/product/grinding/lum-ultrafine-vertical-roller-mill.html