A sand making machine is a type of crushing equipment specifically designed for the production of artificial sand. Through mechanical action, it crushes and grinds large-sized materials—such as pebbles, granite, and limestone—into sand and aggregate of various grain sizes.
In modern aggregate production processes, sand-making machines are typically positioned downstream from secondary crushing equipment. They constitute a critical link that determines the final grain size, gradation, and production capacity of the finished sand.
As a specialized manufacturer of sand making machines, Sandreck provides a detailed overview of the various classifications of this equipment to help you gain a better understanding of the machinery and facilitate your selection of the most suitable crushing unit.
1. Classification by Structure
(1) Vertical Shaft Impact Crusher (VSI Crusher)
VSI crusher adopts the “stone-on-stone” or “stone-on-iron” principle. The core is a high-speed rotating impeller that accelerates and throws the material out, causing it to collide and rub strongly with surrounding falling materials or the surrounding guard plate, thus achieving “self-crushing of the material” or precise impact crushing of the material.
Advantages of vertical shaft impact crusher:
- The processed particles are cubic in shape with a uniform particle size distribution.
- Suitable for the construction industry sand.
- Fineness modulus is adjustable, and the operation is simple.
- Operating stability is also quite good.
Disadvantages of vertical shaft impact crusher:
The wear on wear-resistant parts (such as impellers and surrounding guard plates) is relatively fast, and the operating and maintenance costs are relatively high.
Application of vertical shaft impact crusher:
VSI crusher is suitable for high-end commercial concrete, asphalt concrete, and high-grade highway surface materials production scenarios where the finished sand particle shape and quality requirements are stringent.
(2) Hammer Sand Making Machine
Hammer sand making machine adopts the “stone-on-stone” or “stone-on-iron” principle. The core component is a high-speed rotating impeller that accelerates and ejects material, causing it to collide and rub against surrounding falling materials or the shroud plates, thus achieving “self-crushing” or precise impact crushing.
Advantages of hammer sand making machine:
- High crushing rate, capable of crushing large particles into the required particle size.
- Its compact structure and simple operation.
- It can handle large-particle materials without pre-crushing.
Disadvantages of hammer sand making machine:
- Hammer head wears quickly, especially when handling high-hardness materials.
- It easily clogs the grate bars when handling materials with high moisture content.
- The product particle shape is slightly inferior, with more powdery material.
Applications of hammer sand making machine:
Hammer sand making machines are primarily used for the coarse and medium crushing of medium-to-low-hardness brittle materials, such as limestone and coal gangue, and are widely utilized in small and medium-sized quarries.
(3) Roller Sand Making Machine
The roller sand making machine adopts the working principle of double-roller extrusion. Two rollers rotate towards each other. When materials enter between the two rollers, they are gradually extruded, fractured, and finally crushed into the required particle size.
Advantages of roller sand making machine:
Its advantages lie in low wear during operation and low frequency of wearing part replacement. The finished product has a uniform particle size and stable gradation, without excessive dust generation. Furthermore, it has a simple structure, occupies a small area, and is convenient to maintain.
Disadvantages of roller sand making machine:
However, its production efficiency is relatively low. Due to the limitation of roller size, its production capacity is limited and cannot meet the needs of large-scale production.
Applications of roller sand making machine:
The roller crusher is suitable for the secondary and fine crushing of materials with a hardness below medium level, such as the processing of gypsum and limestone. It is often used in small building material factories and chemical raw material crushing scenarios.
(4) CNC Sand Making Machine
The CNC sand making machine combines the principles of impact crushers and counterattack crushers. After materials enter the equipment, they first undergo preliminary impact crushing. Then collide and rub with hammers and lining plates multiple times in the crushing chamber to achieve full crushing. Additionally, the particle size of the finished product can be precisely controlled through the CNC system.
Advantages of CNC sand making machine:
CNC sand making machine is applicable to a wide range of materials, capable of processing both soft and medium-hard materials. It has a large crushing ratio and can directly crush large-sized materials into fine particle sizes. Its energy consumption is relatively low, and the wearing parts are made of wear-resistant materials, ensuring a long service life.
Disadvantages of CNC sand making machine:
However, in large-scale production, its capacity may not meet the demand, and its processing capacity has a certain gap compared with large-scale dedicated sand making equipment.
Applications of CNC sand making machine:
Its positioning is for the secondary and fine crushing as well as sand making operations of materials of various hardness levels, such as ore mining and construction waste recycling. It is particularly suitable for small and medium-sized production projects.
2. Classification by Mobility and Production Line Configuration
(1) Fixed Sand Making Machine
Fixed sand making production lines consist of equipment that is permanently installed to form a continuous production line. Their advantages include high output, stable operation, and low overall cost, but they require high initial civil engineering investment and are located in a fixed location. They are suitable for large-scale, long-term, and stable mines or building material bases.
(2) Mobile Sand Making Machine
Mobile sand making machines integrate the sand making main unit, screening, feeding, and other equipment onto a mobile chassis, offering extremely high flexibility and allowing for rapid relocation without the need for a foundation. Their disadvantage is a higher investment per unit, making them suitable for projects requiring mobile production, such as construction waste treatment, scattered mineral resources, and short-term project.
Sandreck is a professional sand making machine supplier in China. We offers high-quality equipment and professional knowledge. Contact our technical team. We can design the most cost-effective sand making solution for your needs.
