Identify and Improve the Quality of Machine-Made Sand

Regarding machine-made sand on the market, prices and quality vary significantly. How can we distinguish the quality of machine-made sand? What processes are used to manufacture high-quality machine-made sand?

How to Distinguish the Quality of Machine-Made Sand?

1. Assess the Hardness of the Aggregate

The quality of machine-made sand is primarily determined by its compressive strength. For instance, the hardness standards for stone used in high-speed railways and highways are extremely strict, a requirement that also applies to machine-made sand. The higher the hardness of the aggregate, the better its compressive strength, indicating superior quality.

2. Evaluate by Appearance

Key factors include the surface shape of the machine-made sand: it should have multiple edges with an overall rounded form; uniform thickness; continuous gradation; low needle-flake content; and no foreign impurities in the finished product.

3. Verify Through Professional Laboratory Testing

Engage a professional testing agency to evaluate the fluidity and pressure resistance of the machine-made sand. Use this specialized data to accurately assess its quality.

How to improve the quality of machine-made sand?

1. Control operation

As the direct implementers of construction projects, the professional and technical level of the operators themselves and the concept of quality control are closely related to the quality of machine-made sand. The operating staff of the production line should adjust the flow of the sand making equipment in time according to the needs of the production line, to avoid the equipment being shut down due to too many raw materials, or the materials being too broken in the sand making machine due to too little feeding, and the content of stone powder being too high. To ensure high-quality machine-made sand, it is necessary to arrange professional training for on-site operators to improve their professional skills.

2. Selection of raw materials for machine-made sand

The use of raw materials is a key factor that directly affects the quality of machine-made sand. Due to the characteristics and structure of the raw materials, they reflect different characteristic factors with changes in the environment. In addition, not all raw materials can be used as raw materials for machine-made sand. The compressive strength of raw materials used to produce machine-made sand should not be lower than 80 MPa. In addition, in the selection of mining area

To ensure optimal performance, avoid using excessively thick overburden layers. In mining areas where interlayer mud content is high or rock exhibits poor quality characteristics—such as flaky layering—prompt cleaning of the material is essential if it is exposed to soil cover or contains regolith.

3. Selection of Sand Making Equipment

The working principle, structure, commissioning, usage, and wear characteristics of the equipment directly influence its operational scope, imposing certain limitations on its application. For instance, the selection of crushing equipment is intrinsically linked to product quality. Implementing rational and effective operating procedures ensures high efficiency and stable operation, thereby preventing potential quality issues.

4. Impact of Process Technology

Sand making processes are primarily categorized into dry and wet methods. The choice of process significantly affects the quality of the final aggregate. Controlling moisture content in finished sand is challenging when using wet production methods. Therefore, it is essential to select the appropriate technical process based on specific site conditions and implement preventive measures to ensure consistent product quality.

In addition, producing high-quality artificial sand requires regular maintenance and repair of equipment, particularly crushing machinery, to ensure optimal operational performance. Furthermore, operator training should be prioritized to enhance skill levels and quality awareness, thereby guaranteeing the production of high-quality manufactured sand.