Hammer Crusher–The Best Crusher For Cement Chemical Industry

Understand what is hammer crusher machine

Hammer crusher is a kind of equipment that crushes materials in the form of impact, and it is divided into single rotor and double rotor types. Hammer crusher is a crusher that directly crushes materials with a maximum particle size of 600-1800 mm to 25 or less mm.

Hammer crusher has the advantages of simple structure, large crushing ratio and high production efficiency. It is widely used in mining, cement, coal, metallurgy, building materials, highway, combustion and other departments to perform medium and fine crushing of medium hardness and brittle materials, such as limestone, slag, coke, coal and other materials.

What specifications of hammer crusher can I buy?

As a hammer crusher manufacturer, Smat provides hammer crusher for sale with multiple specifications. At the same time, we have set up production lines in more than a dozen countries including India and the Philippines to provide you with the most suitable purchasing solution.
Common specifications of hammer mill crusher for sale

Hammer crusher machine types:

Hammer crushers are widely used in various scenarios. Different application environments require different hammer crushers. Common ones include single-stage hammer crushers, high-efficiency hammer crushers, sand blasting machines, vertical shaft hammer crushers, reversible hammer crushers, and ring hammer crushers. Ring coal crushers are a variant of hammer crushers, which replace the hammer heads of hammer crushers with steel rings.

Ring coal crushers use the combined effects of high-speed impact and low-speed rolling to crush materials, so that finer products can be obtained. They are mainly used to crush coal for power plants, but can also be used to crush gypsum, salt chemical raw materials and some medium-hard materials. The materials to be crushed are coal, salt, white ash, gypsum, bricks and tiles, limestone, etc.

Reversible hammer crusher

The rotor of the reversible hammer crusher first rotates in a certain direction to crush the material. The liner, screen plate and hammer end in that direction are worn. After being worn to a certain extent, the rotor is rotated in the opposite direction. At this time, the crusher uses the other end of the hammer and the liner and screen plate on the other side to work, so that the continuous working life can be almost doubled.

The rotor of the single-rotor irreversible hammer crusher can only rotate in one direction. When the end of the hammer is worn to a certain extent, it is necessary to stop the machine and change the direction of the hammer (turn 180) or replace a new hammer.

Single-rotor hammer crusher

The casing of the single-rotor hammer crusher consists of two parts, upper and lower, which are welded with steel plates respectively, and the parts are connected into one with bolts. The liner is made of high manganese steel and can be replaced after being worn. In order to facilitate maintenance, adjustment and replacement of screen bars, inspection holes are opened on the front and back sides of the casing. In order to facilitate the replacement of hammers, inspection holes are also opened on both side walls of the casing.

The main shaft of the Smat Machine crusher is equipped with several rows of discs. There are two rows of pin holes on the rotor disc. When the end of the hammer is worn, the pin can be inserted into the outer ring hole to adjust the gap between the hammer and the screen bar. The hammer is hinged between the rows of discs with a pin. In order to prevent the axial movement of the disc and the hammer, the disc is fixed with a clamping hammer disc and a pin nut at both ends. The two ends of the rotor are supported on rolling bearings, and the bearings are fixed to the casing with bolts. The main shaft is directly connected to the motor with an elastic coupling. In order to make the rotor run smoothly, a flywheel is installed at the other end of the main shaft.

How does a hammer crusher work?

The working principle of a hammer crusher is based on the crushing of materials by the impact of a high-speed rotating hammer. The main component is a rotor with a hammer (also called a hammer head). The rotor consists of a main shaft, a disc, a pin shaft and a hammer. The motor drives the rotor to rotate at high speed in the crushing chamber. The material is fed into the machine from the upper feed port and is crushed by the impact, impact, shearing and grinding of the high-speed moving hammer.

At the bottom of the hammer crusher rotor, a screen plate is provided. The particles smaller than the size of the screen hole in the crushed material are discharged through the screen plate, and the coarse particles larger than the size of the screen hole remain on the screen plate.

The following is a detailed description of hammer crusher working principle：

1. Drive system:

The motor of the hammer crusher drives the rotor to rotate at high speed through a transmission device (such as a V-belt or a large pulley).

2. Crushing process:

When the rotor rotates at high speed, the hammer head installed on the rotor also rotates at high speed. The material to be crushed is evenly fed into the crushing chamber of the crusher through the feeding device. When the material enters the crushing chamber, it will be impacted by the high-speed rotating hammer, and this strong impact force will cause the material to be crushed for the first time.

3. Material collision and crushing:

After being impacted by the hammer, the material will gain a certain amount of kinetic energy and hit the impact plate (also called the crushing plate) inside the crusher at high speed or collide with other materials. These collisions will further crush the material until its particle size is reduced.

4. Discharge process:

As the crushing process proceeds, the material gradually moves to the lower part of the crushing chamber. When the particle size of the material is smaller than the gap between the hammer and the impact plate, the material will leave the crushing chamber under the action of its own weight and be discharged through the lower hopper.

5. Screening and adjustment:

The crushed material is screened by the screening equipment to separate qualified products that meet the particle size requirements. For materials that do not meet the particle size requirements, they can be returned to the crusher for re-crushing. At the same time, users can control the particle size of the discharge by adjusting the gap size of the crusher’s discharge port

Performance characteristics of hammer crusher

1. The hammer head of the equipment’s vulnerable parts is made of high-manganese steel castings with strong wear resistance and has been treated with water toughness. Its tensile strength, plasticity, toughness and non-magnetism are greatly improved, with high efficiency and low failure rate.

2. The lining adopts a multi-piece assembly structure for easy assembly and maintenance. At the same time, the thickness is designed to be 30mm, which is thicker than traditional machines on the market, and the life of vulnerable parts is longer.

3. The flywheel structure of the jaw crusher is used in the design, which not only increases the crushing capacity but also reduces the energy consumption in the operation.

4. One-hammer molding, simplified process, and low total investment cost. It has strong adaptability to wet materials, can be crushed with water during crushing, and has low dust pollution.

5. The feed particle size is large, the product particle shape is good, and the models are complete, which can meet customers’ different needs for product particle size.

6. High productivity, large crushing ratio (single rotor crushing ratio can reach i=10~15), small and uniform particle size of the product, cubic, less over-crushing.

7. Simple structure, compact size, small weight, low power consumption per unit product.

8. Continuous and reliable operation, easy maintenance and repair. Vulnerable parts are easy to repair and replace.

What are the hammer crusher parts?

Main parts of hammer crusher:

The main working part of hammer crusher is the rotor with hammer (also called hammer head), which is crushed by the impact, impact, shearing and grinding of high-speed hammer. At the bottom of the rotor, there is a screen plate, and the particles smaller than the size of the screen hole in the crushed material are discharged through the screen plate.

7 applications of hammer crusher

Hammer crusher is a kind of crushing equipment widely used in many industries, mainly used for crushing medium hardness and brittle materials. There are 7 major application areas of hammer crusher.

Hammer crusher is suitable for crushing various brittle minerals, such as coal, salt, white ore, gypsum, alum, brick, tile, limestone, etc. The compressive strength of hammer crusher materials does not exceed 100 MPa, and the humidity is not more than 15%. It can be used as a crushing equipment for stone crushing, stone crushing, mine crushing, plastic crushing, garbage crushing and other materials.

1. Mining and quarrying industry

Hammer crusher is widely used in mines and quarries to process various hard rocks and ores, such as granite, limestone, coal, iron ore, etc. It can crush large pieces of material into a particle size suitable for subsequent processing, and improve the utilization rate and mining efficiency of ore.

2. Construction waste treatment

At construction sites, hammer crushers are used to treat abandoned concrete, bricks, tiles and other construction waste. Through crushing, these waste materials can be converted into recycled aggregates for new construction projects, realizing the recycling of resources.

3. Road construction

Hammer crushers are used in road construction to crush rocks and other raw materials into particles or gravel suitable for paving, ensuring the quality and efficiency of road construction.

4. Cement industry

In cement plants, hammer crushers are used to crush raw materials such as limestone, coal, shale, chalk, gypsum, etc. It can achieve one-time crushing, reduce crushing steps, save energy and be cost-effective.

5. Metallurgical industry

Hammer crushers are mainly used for the initial crushing and rough crushing of metal ores in the metallurgical industry, crushing the original ore blocks into particle sizes suitable for mineral processing and smelting, and improving smelting efficiency.

6. Chemical industry

Hammer crushers are used in the chemical industry to crush granular, blocky or fibrous materials to obtain the required particle size for chemical reactions and manufacturing processes.

7. Waste treatment and recycling

Hammer crushers can be used to treat waste such as furniture, glass, metal and wood, breaking them into appropriate particles for recycling or reuse.

Hammer crushers are widely used in many fields such as building materials, mineral mining, metallurgy, chemical industry, waste treatment, etc. due to their high efficiency, strong adaptability, simple structure and convenient operation.