The premise of machine-made sand production is that in addition to the adaptive performance of the material itself, it should also match the operating parameters of the sand-making equipment.As long as the added value is not high, ore with a certain water content can be made into sand.What materials can be processed and made into machine sand?What issues should I pay attention to when choosing?
Common sand-making ores
1. Sandstone: It has a high quartz content and is widely used in sand and gravel production lines, but it produces a lot of stone powder in the production process. The problem of stone powder diffusion must be solved first.
2. Quartz stone: The quality of the finished sand-making product is good, its hardness is very strong, and it can reach or even better than the particle size and strength of natural sand. It is a reusable environmentally friendly green material.
3. River pebbles: It is a widely used sand-making stone with good texture. It is a good substitute for natural sand in terms of strength, particle shape, and color.
4. Limestone: It is more distributed in nature and easy to obtain. In sand and gravel production lines, it can be used as raw materials for sand and stone at the same time, and stone powder can also be used.
5. Basalt: Sand made of basalt can be incorporated into concrete to reduce the weight of concrete, but its strength is still very strong, and it also has the characteristics of sound insulation and heat insulation.It is a good building aggregate for lightweight concrete for the highest-rise buildings.
6. Granite: Granite has a high content of quartz and low content of sulfides, but like sandstone, it is necessary to solve the dust problem.
7. Tailings, slag, construction waste, etc.: They exist as industrial waste by themselves, and can also be used after processing. For example, construction waste concrete blocks, gravel, bricks are commonly used to crush sand and gravel aggregates, construction, roads and other industries. It is used to produce machine-made sand, which can save the investment cost of raw materials.
Pay attention to those problems when choosing the raw materials of mechanism sand
1. The compressive strength of the raw materials used in the production of mechanism sand should not be lower than 80 MPa, and clean and hard raw materials should be selected.
2. Avoid using mines with poor quality such as thick overlying soil layers, mud-containing interlayers, and rock stratification into pieces.
3. Raw materials from exposed rock formations, such as covering soil layers or containing weathered layers, should be removed in time.
