The Knelson Concrete System (CRS) combines slurry density management with chemical hydration stabilization in a self-monitoring, self-regulating storage and transfer environment. It collects the waste material that would otherwise be discarded and converts it into value-added material to be consumed back into fresh ready-mix.
1. Rinsing the truck drum
The Knelson CRS delivers chemically treated system water to suspend hydration and dilute the contents of the truck drum. The drum contents are then rinsed into the closed circuit recovery system.
2. Reclaiming aggregates
Sand and gravel are classified out of the drum contents using an aggregate reclaimer, while the cement and very fine sand report to the recovery tank with the circulation system water.
3. Automatic monitoring
The system process equipment and controls automatically monitor and manage collection and storage of solids under controlled conditions. The system is managed by parameters set by the producer to maintain quality control and cost-effective recycling.
4. From system water to batch slurry
As required, the contents of the recovery tank are transferred to the storage tank for reuse. The system water used for rinsing and collecting solids in the recovery tank becomes batch slurry as it is transferred to the storage tank.
5. Controlled density
During the transfer process, the system water is blended with fresh process water to dilute the slurry to a user-specified density.
6. The batching process
The batcher delivers slurry as needed from the storage tank to the weigh hopper, flow meter device or batch tank at the plant.
7. The final result
The Knelson CRS delivers the batch slurry to the fresh concrete mixes at a constant density to ensure similar characteristics from day to day and batch to batch. This maintains control over the strength, quality and "finishability" of fresh concrete. Insert process flow diagram.
