How to choose a sand drying machine for construction use

In construction engineering, the dryness of sand directly affects the strength, frost resistance, and construction quality of concrete. Different construction sites have different humidity requirements for sand. Choosing suitable drying equipment can not only save material costs, but also significantly improve construction efficiency.

Why does construction sand need to be dried?

Construction sand needs to be dried before use in order to reduce the impact of high moisture on construction and improve construction quality. The high moisture content of construction sand has the following effects:

1. Reduce strength: Too high moisture content will cause dilution of cement slurry in concrete, reduce bonding strength, and affect structural strength.

2. Slow down construction: Overly wet sand will adhere to the mixer, pump pipes, and pouring tools, causing equipment blockage and delaying the construction period.

3. Increased cost: In order to remove excess moisture, the construction party often needs to increase the amount of cement or add additives, resulting in material waste.

Classification of main sand drying processes

Single drum sand dryer

The single drum sand dryer drives the material to undergo sufficient heat exchange with high-temperature flue gas through the rotating device of the cylinder and lifting plate. During this process, the moisture in the sand is quickly dried. The single drum dryer is widely used in the treatment of materials such as slag, clay, and river sand, and has the characteristics of reasonable structure, high output, and easy operation.

Triple pass rotary sand dryer

The triple pass rotary sand dryer is equipped with three drums from the inside out, allowing materials to circulate inside the machine with low heat loss and high utilization rate; The final moisture content of the material is below 0.5%. The thermal efficiency of drum self insulation can reach over 70%; Compared with traditional single drum dryers, the thermal efficiency can be improved by about 35%. This dryer can use various energy sources (natural gas, coal, diesel, electricity, biofuels) and is suitable for the production of various materials. It is currently the most suitable equipment for sand drying.

Sand drying oven

Sand drying oven is a batch dryer, which unloads one batch of materials after drying each batch before drying the next batch of materials. This type of dryer is cheap, but due to the inability to feed continuously, the output is also relatively small.

Factors to consider when choosing a sand dryer

1. Sand dryer type: single drum sand dryer, triple pass rotary sand dryer or sand drying oven.

2. Processing capacity: Analyze the particle size of the collected sand, measure its moisture, determine the production capacity per hour, and choose a model with processing capacity that meets your required output.

3. Energy efficiency: Consider the energy consumption of the dryer. Choosing energy-saving models can help reduce operating costs.

4. Manufacturers and services: Selection not only depends on the machine, but also on the manufacturer. Choose a reputable manufacturer to ensure sufficient supply of after-sales accessories.

5. Budget: Set a budget for purchasing a construction sand dryer. Compare different models and brands to find a dryer that meets both your budget and your needs.

Zhengzhou Jiutian is a professional sand dryer manufacturer, providing various models of sand drying equipment. If you are interested, you can contact us and get product catalog.