The nature of the ore is the key to determine the service life of the bag filter of the Raymond mill

Bag filter in the milling production line, its role is to exhaust, dust removal, does not contact any grinding parts, also does not belong to the wearing parts, in theory, the service life should be long, there is no wear and tear phenomenon, but the OCP development and production of Raymond Mill many years of experience to tell you: the bag will also be worn out, its service life is limited, and affect the life of the bag is the most direct factor is the nature of the material, so in the daily production of attention to the bag Dust catcher maintenance and care.

The nature of the material affects the Raymond machine bag wear three major factors:

1. The chemical nature of the material, most of the ores contain strong acids and alkalis and other corrosive elements, these elements are mixed with other minerals, although the acidity and alkalinity is not strong, but the accumulation of the case of the corrosiveness of the bag will come to the fore, such as the most common gypsum, the chemical formula is CaSO4, which can be seen to contain a large number of S-elements, when the material is ground into a fine fraction of its acidity will also be enhanced, the bag Dust collector in a period of time after the work, the bag will be attached to a large number of gypsum powder, fine powder acidic slowly corrosion of the bag, over time the bag will be damaged due to corrosion and wear.

2. Dust is flammable and will explode, for flammable materials coal, coke powder, magnesium powder is so, such materials fine powder itself slack charge, when the bag material is also to be charged fibre, and then the friction process is easy to produce sparks, resulting in damage or even accidents, therefore, in the milling of such materials on the principle of the bag material should be paid particular attention to the selection of fuel-blocking bags or conductive material bags.

3. Careful users will find that the bag is easy to wear parts of the lower part of the bag, this is because the lower part of the powder flow rate, friction is strong, after grinding the dust its mobility friction is strong, in the filtering of dust constantly with the bag of friction caused by wear and tear, especially some of the high abrasive dust on the bag of damage is greater, such as aluminium, coke powder, sintered mineral powder, carbon powder, silica powder, etc. on the bag have a stronger abrasive, in the strong air flow under the action of friction, the filter bag material should pay extra attention to the principle of using fuel barrier bag or conductive material bag. The friction is stronger under the action of strong airflow, so the high abrasive dust is also an important factor causing the shortening of bag life, and is related to the airflow rate.

So it is not grinding parts is not not wear and tear, Raymond mill bag dust collector should always pay attention to the maintenance measures, and the maintenance of the bag is mainly reflected in the cleaning, more grinding materials, production intensity to develop a reasonable cleaning programme, regular cleaning, so that the bag is always kept clean, you can effectively reduce the wear and tear of dust on the bag, but also good exhaust to ensure that the milling production line of the difference between the positive and negative pressure, and the other bag dust collector Another maintenance measure is to choose the corresponding material bag according to different materials, only suitable for better results.

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