In thermal power plants, coal handling is an important process that includes dumping, crushing, screening, and moving the coal. Each step is very important for making sure that the power is made efficiently. Here is a full description of what the coal crusher does and why screen vibrators are important in this process.
The process of moving coal around in thermal power plants has several steps. The coal crusher and the screen vibrator are two important parts of this process. Both of these machines do different things, but they work together to keep the system running smoothly.
Coal Crusher: Large chunks of coal are broken up into smaller, easier-to-handle pieces by this machine. Its major job is to cut coal into pieces that can be burnt in heaters. The breaker is an important part of the process because the coal can’t be burnt efficiently if it’s still in big chunks.
Screen Vibrator: This machine sorts the coal by how big it is. There are bigger and smaller pieces of coal after it has been crushed. The screen vibrator helps separate the coal so that only the right-sized pieces can move on to the next step in the process. Any pieces that are too big are sent back to the crusher to be cut down even more.
In this way, both tools are part of the same system, but they do different things. The screen vibrator sorts the coal by size after the crusher breaks it up.
Now, let’s look at what happens when these machines don’t work right:
- Without a coal crusher, the big chunks of coal would stay together and not be broken up into smaller pieces that are easier to handle. This would make it hard for the heaters to burn the coal effectively, which would lower the energy output and could damage the machinery.
- If screen vibrators were not working, Size would not be used to sort the coal. This would cause bigger pieces of coal to move forward in the process, which could stop it up or make power creation less efficient. The process would take longer because the larger pieces would also need to be hand-sorted.
Lets drive more deeply into vibratory screen equipment. You know vibratory screens are an important type of industrial screening equipment used in various industries, such as solid waste management, recycling, and aggregate industries. Besides, other mechanical screening solutions are available, but vibrating screens offer some unique advantages that make them the preferred choice for many industrial applications.
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What is a vibrating screen?
Screens that vibrate sort particles based on how big they are. Their job is to shake the stuff that is put on the screen, which separates the bigger and smaller bits. The bigger pieces stay on top of the screen, while the smaller ones slide right through.
Types of vibrating screens:
- Linear Screen: This screen moves things forward in a straight line. It is mostly used to sort medium-sized and small pieces in the coal, mining, and building industries.
- Inclined Screen: This screen is tilted just a bit, about 15 to 30 degrees. This makes it easier for things to fall. In the sand and gravel business, it can be used for both wet and dry screening.
- Circular Screen: The action of this screen is spherical, which means it goes in a circle. It is mostly used in the mining and manufacturing industries to sort small and big pieces.
- High-Frequency Screen: This screen moves quickly and is great for separating small particles, like when minerals are processed or water is removed.
- Elliptical Screen: It moves in a circular pattern, which helps get rid of sticky materials. Mining and recycling are the main places where this is used.
- Banana Screen: This screen, which is shaped like a banana, is great for high-capacity screening, especially when the material has a lot of small bits. It is mostly used in businesses that handle coal and minerals.
- Dewatering Screen: This screen is made to get rid of water. It’s used in mines to deal with wet sand and waste rock.
- Grizzly Screen: It has plates or bars that keep big things out of the crusher. This is mostly used in the processing and mining businesses.
How Does It Work?
The basic function of a vibrating screen is to shake particles using vibrations. When material falls onto the screen, the vibrations move the particles, breaking their tension, and smaller particles fall through the screen. In this way, separation happens based on size.
Advantages of vibrating screens:
- Better Material Quality: They help sort particles of different sizes more effectively, which improves the quality of the product and the benefits of processing.
- Lower Operating Costs: Vibrating screens are simple and long-lasting, so they use less energy and don’t need as much upkeep.
- Low Maintenance: Since only the screen vibrates, the machine doesn’t get worn out as quickly, and it also doesn’t have to be fixed as often.
- Higher Efficiency: Vibrating screens work well even when the feed flow is high, so they don’t have problems like backflow that can happen with other machines.
- Improved Sustainability: They use resources more efficiently and waste less energy, which is good for the earth.
Applications of Vibrator Machines in Coal Handling
- Screening: Vibratory screens are essential for separating fine coal particles from larger ones before they reach the crushers. This makes crushing more efficient by keeping the crushers from having to work too hard.
- Feeding: To get coal from storage bunkers onto conveyors evenly, vibratory feeders are used. They ensure a consistent flow of material, which is crucial for maintaining steady power generation4.
- Material Flow: Vibrator machines help keep material from bridging and clogging in coal bunkers. This keeps the flow smooth and cuts down on the need for human help. This lowers the chance of accidents and keeps things running as much as possible.
Dual-Vibratory Design: The screen has two shaking systems that work together in a dual-vibratory design. The movements keep shaking the screen, which keeps things like coal and other bits from getting stuck in the holes in the screen. This process of shaking all the time keeps the materials moving easily and keeps the screen from getting jammed. This makes the screening process more effective and faster, which cuts down on downtime and the need for repair.
