What Should We Do If the Water Content of Machine-made Sand is Too High? 3 Ways to Help You Solve It Quickly

Natural dehydration control mechanism sand moisture content

At present, the method of natural dehydration is mainly machine-made sand unloading, stockpiling dehydration and machine-made sand retrieving are carried out separately. Generally, after 3-5 days of storage and dehydration, the water content of the machine-made sand can be reduced to less than 6% and stabilized. The dehydration situation is also affected by the stone powder content and initial water content of the machine-made sand.

The content of stone powder is between 10-17%, and when the initial moisture content of sand and gravel is 15-17%, the dehydration speed is fast within 2 days, and the moisture content can be reduced to 8-10%. can be reduced to about 6%.

Mechanical dehydration to control the moisture content of machine-made sand

At present, the methods of mechanical dehydration mainly include screening dehydration, vacuum dehydration and centrifugal dehydration. Vacuum and centrifugal dehydration methods have good dehydration effects, but the investment cost is high and the processing capacity is low; screening dehydration is generally dehydrated by vibrating screen, and the dehydration processing capacity is high. , but the effect is not as good as vacuum and centrifugation.

Due to the high production capacity of the machine-made sand, the installation of the dewatering screen is an additional process after the production and processing system is put into operation. According to the test, the use of the linear vibrating screen can reduce the moisture content from the initial 25% to about 15%.

General measures to effectively control the moisture content of machine-made sand in the storage bin

1. First, mechanically remove most of the water in the sand and gravel. At present, the vibration screen dehydration process is the most used. The sand dehydrated by the linear dehydration screen can remove the sand with a moisture content of 20-23% to 14-17. %, or use vacuum dehydration and centrifugal dehydration with better dehydration effect and large investment cost.

2. After mixing the dry-process machine-made sand and the dewatering screen machine-made sand, they enter the finished sand bin together, which can effectively reduce the moisture content of the machine-made sand.

3. Set up a rainproof shed on the top of the finished sand silo, pour concrete floors and blind ditch drainage facilities at the bottom of the sand silo, clean the blind ditch after each bin is finished, speed up the natural dehydration time, and effectively reduce the water content of the finished sand .

The quality of machine-made sand directly affects the quality of concrete, so the production process of machine-made sand is very important. In the configuration and production of concrete, the stone powder content and moisture content of machine-made sand play a very important role in the quality of concrete, so attention should be paid to control Moisture content of machine-made sand.