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Release time: 17:24, November 9, 2020 Publisher: Dongmeng Road & Bridge Machinery Co., Ltd.

Advantages and process flow of dry sand process


Dry process, wet process and semi dry process are three common sand making processes in the field of machine-made sand. Among them, the application of dry sand process is more common. Let's discuss the advantages and working process of dry sand process.
 

Advantages of dry sand process:
 

1. Not limited by the environment
 
Dry sand is not limited by water source and environment, and machine-made sand production can also be carried out in places where water resources are scarce.
 
2. Reduce production costs, more conducive to environmental protection
 
Water is rarely used in the production process of dry sand process, and the water used by sand washing machine can be recycled. On the one hand, it saves a lot of water resources and reduces production costs; on the other hand, it avoids water pollution caused by production, which is more conducive to environmental protection.
 
3. The gradation is easy to control
 
Dry sand only removes particles less than 75 μ m, and all kinds of particles are evenly graded and the grading zone is good; while the particles below 75 μ m are removed by water washing in wet production, 150 μ m, 300 μ m and even 600 μ m particles are washed away, so the gradation can not be well controlled and a lot of useful stone and stone powder are wasted.
 

Dry sand process flow:
 

Generally speaking, a dry sand production line mainly includes feeding, crushing, screening, conveying and other equipment. The crushing equipment is the main equipment of the whole production line, and can be divided into coarse crushing and fine crushing equipment. Jaw crusher is usually used for coarse crushing, and the fine crushing includes cone breaking, impact breaking and other equipment. Cone breaking and impact breaking belong to the second breaking equipment, which can directly break stones after jaw crushing, while impact breaking belongs to three breaking equipment, which can directly break stones and stone powder Broken into machine-made sand.
 
Other supporting equipment, such as feeding equipment is mainly vibrating feeder, screening equipment is circular vibrating screen, conveying equipment is belt conveyor, with crushing equipment, to complete the production of stone and machine-made sand.

If stone, stone powder and other materials are purchased to directly process machine-made sand, it is enough to configure feeder, sand making machine, vibrating screen, sand washing machine and belt conveyor. There is no need to add crushing equipment in the front section. The feeding size of sand making machine is less than 30-50 mm.
 

The specific work flow is as follows:
 

The stone is blasted from the mountain, and the stone is sent to the vibrating feeder by the dump truck. The vibrating feeder evenly sends the stone to the jaw crusher. The jaw crusher breaks the first section of the stone. The stone broken from the jaw is sent to the impact crusher or cone crusher through the belt conveyor for the second section of crushing. The materials larger than 40mm are returned to the second crushing machine for re crushing through the circular vibrating screen The following stones are sent to the sand making machine. Finally, the materials are graded and screened through the circular vibrating screen. The materials larger than the finished products are returned to the sand making machine for re crushing, and the finished products are transported to the finished product area by belt conveyor.

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