Sand is a valuable resource and, in the construction sector, indispensable. Sand is also used in the manufacture of products including glass, computers, automobiles and even cosmetics.
Today, sand is no longer a raw material that is available in abundance. The resource regenerates itself only very slowly and, in addition, not every type of sand is suitable for processing, and a large share of sand deposits is located in nature reserves. Furthermore, the demand for sand continues to increase, in particular due to the growing population and the resulting construction boom. All of this causes major damage to the environment, apart from making sand as raw material ever more expensive.
Active ecological preservation of resources
What, in this context, can the use of a Bibko residual concrete recycling system contribute in ready-mixed concrete or precast plants?
A recycling system is a closed-loop system. Residual concrete is discharged through a charging hopper into the Bibko recycling system. Solids > 0. 2 mm (sand and gravel) are washed out and discharged by the internal helices, fitted with plastic shovels and plastic paddles on the machine. The washed-out sand and gravel are separately stored and then reintroduced into the mixing process, reducing in this way as much as possible the consumption of sand and gravel. The residual water is discharged over a water drain into an agitator basin at ground level.
In addition to reclaiming the constituents contained in the residual concrete, the residual water is also completely reused in the mixing system. The system can be extended by a sand and gravel separation system to ensure, due to the separation, an enhanced quality of the washed-out solids.
Use of a recycling system results in reduction in raw-material transport and in the resulting CO2 output, from which the environment additionally benefits. The installation of a Bibko recycling system actively contributes to preservation of resources and recognizes ecological responsibility. The closed material loop results in significant savings in sand, gravel and water. In this way, Bibko recycling systems help counteract the growing scarcity of sand.