Hopper
What is the input hopper of the stone crusher line?
Hopper is a part of crushing and crushing line equipment that is designed as a primary reservoir of minerals. The main task of the hopper is to store and direct the incoming materials to the stone crusher.
This tank is usually installed at the beginning of the crushing lines so that the minerals extracted from the mine are directed into the crusher in a controlled manner.
What is the material of the hopper? Hoppers are usually made of hard and resistant steel, because these equipments are constantly subjected to impact and wear caused by minerals. The most common materials used in making hoppers are:
1. Carbon Steel: due to its high impact resistance and reasonable cost. 2. Wear-resistant steel: such as Hardox sheets, which are used to resist long-term wear.
How to increase the life of the hopper?
1. The use of wear-resistant coatings: internal coatings such as anti-wear plates made of Hardox, chrome-cobalt or special rubbers can significantly increase the life of the hopper.
One of the best options for resistance to wear is Hardox sheet. These sheets are available in different thicknesses (usually 8 to 20 mm) and greatly increase the life of the hopper.
In some situations where it is necessary to reduce the impact sound and moderate resistance to wear, rubber covers can be used. Appropriate design of angles: The hopper should be designed in such a way that materials are discharged uniformly and no points with severe wear are created.
3. Controlling the size of incoming materials: It is recommended to use pre-sieve equipment (Grizzly Bars) at the beginning of the hopper to remove very large stones and reduce the pressure on the hopper body.
4. Periodic maintenance and inspection: continuous inspection and repair or replacement of covers at the right time can prevent premature failure.
5. Use of shock absorbers: installing shock absorbers on the walls or floor of the hopper can reduce the impact intensity.
Hopper capacities:
The capacity of the hopper depends on the volume and weight of the materials to be stored in it. The capacity of hoppers is usually designed based on the needs of the mine and the type of input materials and can vary from a few tons to hundreds of tons. The most common capacities are:
1. Small (5 to 20 tons): for small mines and laboratory crushing lines.
2. Medium (20 to 100 tons): for semi-industrial stone crushing lines.
3. Large (more than 100 tons): for large mines and industrial production lines with high capacity.
Exclusive design: the capacity and dimensions of the hopper must be calculated in such a way that it has the ability to store and continuously feed the crushing machine without stopping the production line. It should also be coordinated with the power of material handling equipment such as conveyor or feeder.
Special notes:
• If the incoming materials have a lot of moisture, the use of non-stick coatings such as Teflon or polyurethane is recommended.
• If the crusher is underground, the hopper should be designed in such a way that the material can be easily unloaded with the help of mechanical equipment (such as a dump truck or wagon).
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