How much construction sand can be produced from one tonne of river pebbles

River pebbles constitute a prevalent building material. Owing to the scarcity of natural sand coupled with stringent extraction restrictions imposed across numerous nations and regions, market sand prices exhibit an upward trajectory. Most areas now face supply shortages, prompting manufactured sand to effectively supplant natural river sand in infrastructure projects. Compared to natural sand, manufactured sand permits large-scale production and processing unaffected by weather conditions, enabling economies of scale. Its finished particle size is adjustable, exhibiting uniformity and favourable grain shape. Investors are most concerned about how much sand can be produced from one tonne of river pebbles, how the complete river pebble sand-making equipment should be configured, and what the configuration costs entail.

The process of converting river pebbles into river pebble sand requires a series of treatments including crushing, sand-making, sand washing, and screening to obtain high-quality sand and gravel.

Crushing Equipment: Crushing comprises coarse and fine stages. A vibrating feeder conveys large river pebbles to a jaw crusher for primary crushing. Secondary crushing follows in an impact crusher, reducing pebbles to under 50mm for optimal sand-making machine processing. 

Sand-Making Equipment: River pebbles meeting specifications after coarse and fine crushing undergo sand production in the sand-making machine, processed into various sizes such as 0-2mm, 2-5mm, and 5-10mm. Material failing to meet requirements is returned to the upper stage for re-crushing. 

Screening Equipment: Vibrating screens separate the processed river pebbles. Compliant particles proceed to subsequent stages, while non-compliant material is returned to the sand-making machine for re-crushing. Washing Equipment: Sand containing impurities can be cleaned using a sand washer to meet client production requirements.

How much sand can be produced from one tonne of river pebbles?

Transforming river pebbles into river sand involves multiple processing stages, encompassing crushing, sand-making, screening, and washing. The processed pebbles yield sand, gravel, and stone powder. The quantity of sand obtainable from one tonne of river pebbles depends on the sand-making production line's efficiency and the material's characteristics. If the sand-making machine exhibits low over-fining rates, uniform product size, and optimal screening control, and the material has low moisture content, it can reduce the proportion of stone powder and irregular coarse sand particles, minimise adhesion, and enhance the yield and quality of river pebble sand. Therefore, the quantity of sand produced from one tonne of river pebbles must be determined based on actual production conditions.

The cost budget for configuring a complete river pebble sand-making equipment set includes the purchase cost of the sand-making production line and the fees for obtaining various permits. The most significant cost factor is the purchase price of the sand-making production line, which varies based on specific configuration, specifications, manufacturer, and region. Consequently, the cost of configuring a complete river pebble sand-making equipment set is not fixed.

Whether investing in a production line yielding thousands or tens of thousands of tonnes daily, the overall investment—encompassing raw material procurement, permit processing, equipment purchase, and establishing a fully operational manufactured sand plant—requires substantial capital. Exercise particular caution when selecting manufactured sand equipment. Regarding investments in manufactured sand plants, OCP Heavy Industry possesses over 40 years of expertise in the research, development, manufacturing, and production of crushing machinery. As a direct manufacturer, we offer competitive pricing, offering competitive pricing alongside professional engineering technicians to provide specialised production guidance. Submit your production requirements to our online customer service team, and we shall prepare a tailored configuration plan and quotation for you!