Manufactured Sand

Manufactured Sand Wet Process

Advantage

There is no restriction on the mud content of the masterbatch.
The mud content of the finished material is low and stable, and the methylene blue value is easy to control and stable.
The surface of manufactured sand is clean.
The dust from sand making and washing is easy to control.

Disadvantage

It occupies a large area and requires a lot of water sources.
The water content is large, the dehydration is difficult, the concrete mix ratio is difficult to control, and the manufactured sand finished material stacking site is large.
Mud cake pollution is difficult to deal with.
The powder content is less, the concrete mix ratio, the cementing material content increases, and the concrete cost increases.
The effect of flocculant on concrete admixture, and pollute water source after sewage treatment.
The gradation of manufactured sand is discontinuous, the 0.3-1.18 mm part of the fine material is lost (the fine material is unevenly recovered), and the concrete work performance is reduced.

Manufactured Sand dry process

Advantage

The finished product has low water content and stability (for asphalt pavement sand and gravel production, reducing sand and gravel drying costs).
The water consumption is small, the site area is relatively small, and there are few restrictions on the selection of processing places.
The dust is recycled and used in a concentrated manner, and the resource utilization rate is high.
High sand formation rate.
The powder content is controllable, which can reduce the amount of cementing materials and reduce the cost of concrete.
The manufactured sand has good gradation continuity.

Disadvantage

During the production process, the dust is relatively large, and measures such as centralized dust removal and spray dust reduction are required.
Higher requirements for masterbatch control (mud content, water content, weak mountain leather, etc.)
Disposal of recycled stone powder.

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