In the Kembs gravel plant, the requirements for mineral processing systems are similarly high, but completely different. The deposit is permeated by clay and very difficult to screen. In addition, large volumes of uncontaminated soils are processed in large volumes. Two track-mounted Powerscreen Warrior models are giving faithful service in Kembs. The newer model “Warrior 1400X” is also operated here with a track-mounted “Telestack TC424X” stockpiling belt to meet the high throughput rates with commensurately high stockpile volume (Fig. 2).
The latest investment was made by Udo Pfeiffenberger in 2018 with the acquisition of a track-mounted crusher “Rubble Master RM 100Go!”. A decision that was mulled over longer as the recycling volumes to be processed alone did not justify the acquisition. However, in Pfeiffenberger‘s gravel extraction, not inconsiderable quantities of oversize 32 – 150 mm are produced, which can now be processed as high-grade gravel base courses 0 – 32/45 mm. As a flexible and highly mobile machine, the “RM 100Go!” can also be operated on the construction sites. The Rubble Master was already completely convincing even during commissioning. Extremely short set-up times, excellent accessibility and easy operation impressed the machine operatives. The owner is very enthusiastic about the high throughput rates, the favourable wear rates, moderate consumption and oversize recirculation downstream of the integrated screen box.