How to choose sand making process?

With the maturity of domestic sand making technology, the market space of machine-made sand has undoubtedly reached a new height, and at the same time, more choices are provided for sand and gravel workers, including production technology. So what is the difference between the two processes of legal sand and wet sand?

What is the difference between dry sand making and wet sand making? Which process is better?

In fact, the difference between the two processes is not particularly large, mainly reflected in the process and dust treatment after sand making. The wet method uses a wheel or spiral sand washing machine for cleaning, while the dry method generally uses a powder separator to control the stone powder content of the finished product. The details of the two processes are as follows;

Wet sand making process: 

raw materials - vibrating feeder (removal of soil waste) - coarse crushing - medium and fine crushing - screening (screening large aggregates) - sand making - screening (screening small aggregates) - sand washing machine - Finished sand.

The advantages of wet sand making: the finished product has low mud content, high cleanliness, and good appearance. It is a more ideal material for some large-scale construction projects, and there will be no large amount of dust in the entire production process, which is easy to be environmentally friendly.

Disadvantages of wet sand making: it needs to consume a lot of water resources, 1 ton of sand and gravel needs about 2-3.5m3 of water, the waste water recovery cost is high, and the fine sand is easy to lose, and the finished product has high moisture content and low sand production rate .

Dry sand making process: 

raw material - vibrating feeder (removal of waste) - coarse crushing - medium and fine crushing - screening (screening large aggregates) - sand making - screening (screening small aggregates) - dust removal - powder selection - Finished sand.

Advantages of dry sand making: the finished product has low water content and the gradation of stone powder can be adjusted. It can be equipped with high-strength concrete, used for roadbed cushion or as raw material for slag bricks. It has high utilization rate and is not affected by seasons, and there is no need for subsequent sewage treatment. , can save a lot of operating costs.

Disadvantages of dry sand making: the requirements for the content of soil impurities in sand and gravel raw materials are relatively high, and the cleanliness of finished products is relatively low. If dust removal treatment is not carried out, serious dust pollution will be caused.

The question of which is better, dry sand making or wet sand making, is suitable for users in different regions. For example, dry sand making technology is often used in areas with cold weather, drought, little rain, and severe shortage of water resources; In rich areas, the wet sand making process is mostly used.