In the later stage of the sand-making production line, for sand with high mud content or sand-water mixture with high sand content, only configuring the sand washing machine may not meet the requirements of the final finished sand, and there is a serious drawback of fine sand loss. , To solve this problem, it is necessary to use a fine sand recovery system. This article introduces 4 methods for your reference.
1. Fine sand recycling machine
The fine sand recovery machine is a commonly used fine sand recovery equipment. It needs to be used in conjunction with the sand washing machine to recover a large amount of fine sand lost by the sand washing machine in the traditional sand-making industry (more than 20% when the loss is serious) while improving economic benefits. , reducing the processing cost of tailings and the pollution and damage to the environment caused by the loss of fine sand.
When the fine sand recovery machine is used in a sand and gravel plant, the main function is to wash sand and separate sediment, so it is also called a fine sand dewatering machine, a sediment separator, and a sediment extraction machine; when it is used in a concentrator, the main function is to recover tailings. Therefore, it is also called a tailings recovery machine.
2. Dewatering fine sand recycling machine
The dewatering fine sand recycling machine is divided into two systems: dewatering and recycling. The dewatering part includes a dewatering screen and a vibrating motor, and the recycling part includes a vacuum high-pressure pump, a motor, a high-pressure separator, a return water tank, and a cleaning tank.
Generally, it is directly installed at the back of the sand washing machine, which can be used for secondary cleaning of the sand washed by the sand washing machine, and can also be used to separate the wastewater from the sand washing machine, which fully solves the disadvantages of the sand washing machine (such as finished products Large water content, large mud content, more dust, difficult to remove impurities, etc.), which greatly improves the quality of the finished product.
3. Sand washing and recycling machine
The structure of the integrated sand washing and recycling machine is composed of a high-pressure separator, dewatering screen, impeller separator, reducer, vacuum high-pressure pump, cleaning box, high-level return water tank, motor, vibration motor, and other components. The main function is to wash sand and fine sand at the same time.
The working principle is: the sand-water mixture enters the cleaning box, is separated by the impeller separator, and then enters the lower dewatering screen for dehydration treatment. The wastewater (containing a large amount of fine sand, mud, dust, and other impurities) overflowing from the cleaning tank is transported to the high-pressure separator by the vacuum high-pressure pump, and then the fine sand after centrifugal classification and concentration is discharged into the upper layer of the dewatering screen through the sand settling nozzle. The wastewater, mud, dust, impurities, etc. in the cleaning tank are discharged into the high-level return tank through the overflow port of the high-pressure separator. The upper layer produces the coarse sand of the finished material, and the lower layer produces the fine sand of the finished material or a mixture of coarse and fine sand.
4. Sand washing and dehydration integrated machine
The integrated sand washing and dewatering machine combine the characteristics of the sand washing machine and the dewatering screen.
Working principle: The sand-water mixture enters the cleaning box of the sand washing machine, is filtered and sieved by the wheel bucket screen, and falls into the dehydration screen for dehydration treatment to remove a large amount of water in the sand. As shown below:
Although the above types belong to the same series of fine sand recovery systems, different types of systems have different functional focuses. And fine sand recovery function. Users can choose the most suitable equipment according to their own production needs when purchasing to ensure the best economic benefits.
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