how to reduce fine generation from coal double roll crusher

Introduction

Rolling crushers are a type of equipment used to reduce the size of coal, lignite, coke, and other mineral ores. They have a number of advantages over other methods of size reduction, including being able to handle larger feed sizes and produce a more uniform product. However, one downside to rolling crushers is that they can generate a lot of fine material (coal dust). This article will discuss how to reduce the amount of fines produced by double roll crushers.

what is a coal double roll crusher?

A coal double roll crusher is a piece of mining equipment that can be used to break down materials into smaller pieces. The material that is fed into the crusher is first crushed by the two rolls that are rotating in opposite directions. After the material has been crushed, it can then be further reduced by the use of a screen. This type of crusher is often used in the mining industry to break down materials such as coal and rock.

how does it work?

The coal double roll crusher is designed with two rolls that rotate in opposite directions. The crushing action takes place as the material is pulled between the two rolls.

The double roll crusher is typically used as a secondary or tertiary crusher due to its ability to crush materials of varying hardness. It can also be used to reduce the size of coal that contains a high percentage of fines.

When operating the coal double roll crusher, it is important to pay attention to the following factors:

1. The speed at which the rolls rotate
2. The gap between the rolls
3. The feed rate
4. The discharge rate

If the above factors are not controlled, it can lead to an increase in fine generation from the coal double roll crusher.

Types of coal double roll crushers

There are two main types of coal double roll crushers: the standard and the low-profile. The standard type is designed for primary crushing, while the low-profile type is best suited for secondary crushing. Both types of crushers use a similar principle of operation, but they differ in design and capacity.

The standard coal double roll crusher has a higher capacity than the low-profile one. It can be used for primary or secondary crushing. The low-profile coal double roll crusher is best suited for secondary crushing. It has a lower capacity than the standard type but is more compact and easier to operate.

advantages of using a coal double roll crusher

There are a number of advantages to using a coal double roll crusher over other types of crushers. For one, they tend to produce less fines than other crushers. Additionally, they are able to handle higher capacities than other crushers and they tend to be less expensive to operate.

how to reduce fine generation from coal double roll crushers

As a result of the many advantages of double roll crushers, they are increasingly being used in coal plants to crush coal before it is transported to power plants. However, one problem that can occur with double roll crushers is the generation of fines. Here are some tips on how to reduce fines generation from coal double roll crushers:

– Use a pronounced nip angle. This will help to reduce the amount of material that is fed into the crushing chamber and therefore reduce the amount of fines that are generated.

– Adjust the rolls so that they operate at different speeds. This will help to create a shearing action which will further reduce the amount of fines that are generated.

– Increase the wear life of the rolls by using hardfaced rolls or rolls made from high wear resistant materials. This will help to minimise the amount of fines generated by the crushing action.

conclusion

Although the double roll crusher is a common size reduction machine used by coal plants, it can generate a lot of fines if the crushing surface is not properly maintained. A number of factors can contribute to the generation of fines, including incorrect roll spacing, incorrect operating speed, too much material fed into the crusher, and improper maintenance. By following these tips, you can help reduce the amount of fines generated from your double roll crusher.