At the later stage of sand production line, for sand with high mud content or sand-water mixture with high sand content, only the sand washing machine may not meet the requirements of the final finished sand, and there is also a serious disadvantage of fine sand loss. In order to solve this problem, fine sand recovery system must be used. This article introduces 4 methods for your reference.

Solution 1: Use of fine sand recycling machine

As the name suggests, fine sand recycling machine is a commonly used fine sand recycling equipment. It needs to be used in conjunction with sand washing machine to recover a large amount of fine sand lost from sand washing machine in traditional sand making industry (the loss can be up to 20% or more when the loss is serious), to improve the economic efficiency and benefit and at the same time to reduce the cost of tailings disposal and the pollution and damage caused by the loss of fine sand to the environment. Fine sand recycling machine in the sand and gravel plant, the main role is to wash sand and separation of sediment, so also known as fine sand dewatering machine, sediment separator, mud pumping machine; used in mineral processing plant, the main role is tailings recovery. Therefore, it is also called tailing recovery machine.

Solution 2: Use of fine sand recyclers and dewaterers

Dewatering fine sand recycling machine is divided into two systems: dewatering and recycling. The dewatering part includes dewatering screen and vibrating motor, and the recycling part includes vacuum high-pressure pump, motor, high-pressure separator, return tank and cleaning tank.

Generally installed directly behind the sand washer, the sand washed by the sand washer can be cleaned twice, and the wastewater discharged from the sand washer can be separated from the sand, which fully solves the shortcomings of the sand washer (e.g., the finished product) has a large amount of water content, large amount of mud, dust, and impurities are difficult to remove, etc.) and greatly improves the quality of the finished product.

Solution 3: Sand washing and recycling machine

The structure of sand washing and recycling integrated machine consists of high pressure separator, dewatering screen, impeller separator, reducer, vacuum and high pressure pump, cleaning tank, high level return tank, motor, vibration motor and other components. The main function is to wash sand and recover fine sand at the same time.

Principles of work:

The sand-water mixture enters the cleaning tank, separated by impeller separator, and then enters the lower dewatering screen for dewatering treatment. The wastewater overflowed from the cleaning tank (containing a large amount of fine sand, mud, dust and other impurities) is transported to the high-pressure separator by the vacuum high-pressure pump, and then the centrifugally graded fine sand is discharged into the upper layer of the dewatering screen through the sand nozzle. Waste water, mud, dust, impurities, etc. in the cleaning tank are discharged into the high return tank through the overflow port of the high-pressure separator. Coarse sand is used in the upper layer and fine sand in the lower layer, or a mixture of coarse and fine sand.

Solution 4: Sand washing and dewatering machine

Sand washing and dewatering integrated machine combines the features of sand washing machine and dewatering screen. The main function is to wash the sand with water, then desliming, dewatering and secondary cleaning.

Principles of work:

The sand-water mixture enters the washing tank of the sand washer, is filtered and screened by the bucket sieve, and falls into the dewatering sieve for dewatering treatment, removing a large amount of water in the sand.

Although the above types belong to the fine sand recovery system series, different types of systems have different functions. For example, the dewatering fine sand recycling machine has both dewatering and fine sand recycling functions, and the integrated sand washing and recycling machine has both water washing sand. And fine sand recovery function. Users can choose the most suitable equipment according to their own production needs when purchasing to ensure better economic benefits.

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