Capital Equipment News April 2019

Liebherr Africa expects the plant to produce 60 m³/hour of concrete.

programmed by the customer’s concrete technologist or engineer. Controlled by a computer, records are kept for quality assurance purposes. Delivery notes and invoices can be generated by the system, if required. By being a mobile platform equipment, the plant is self-contained, enabling cost-effective transportation,” explains Van der Merwe. Theoretically, Greyling explains that Liebherr Africa expects the plant to produce 60 m³/hour of concrete. However, in reality, the company expects 53-55 m³/ hour with good logistics and setup. Explaining the difference between dry and wet batch technology, Van der Merwe says wet plants weigh material automatically and send the ingredients into a central integrated mixer where they are mixed to make concrete, which is then discharged into a truck mixer. However, the downside to this approach is that the mixer endures wear and requires ongoing maintenance. “Typical mobile dry plants have a rudimentary system which requires manual weighing of ingredients. This can be less accurate compared with wet batch systems, but the maintenance costs are lower on the plant by not having a mixer in the equation,” explains Van der Merwe. The DBP 60-M offers the same weighing principles as a wet plant, but without the wear and tear of an integrated mixer as

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The DBP 60-M is ideally suited to customers who wish to produce concrete for short to medium-term projects, such as housing developments and road construction.

It features a four-compartment aggregate storage system of up to 50 m³, with a weighing conveyor belt, cement and admixture scales, as well as a water dosing mechanism to accurately batch the material.

It is automated so that there is consistency in batching, according to mix designs which are pre-programmed by the customers’ concrete technologist or engineer.

The key design features considered a number of operational parameters, but mainly low maintenance costs, cost-effective transportation, quality of concrete and reduced installation time and cost.

CAPITAL EQUIPMENT NEWS APRIL 2019 21