Engineered Cranes For Recycling & Bulk Material Handling
Designed for continuous duty, aggressive environments, lifting a variety of materials with a variety of grabs, MHE-Demag tailored and scalable solutions are the ideal choice.
The fundamentals are similar whether requirement is for the management of refuse or other bulk materials such as coal or coke, to finer, granular materials such as sand and ash, even residues or sludge from other processes. MHE-Demag has the solution by combining tried and tested components and technologies in exactly the right combinations to meet the stringent demands. From clamshell and orange peel type grabs, automatic positioning, remote operation stations, condition monitoring and warehouse management systems, all of which can be seamlessly linked for semi or fully automatic control with a tailored interface to your own plant systems.
In the recycling industry, Waste to Energy (WtE) or Energy from Waste (EfW) cranes are often specified as semi or fully automatic and to work 24/7, with particularly high usage during the peak delivery times where charging of the furnace and creating space for incoming refuse are combined. Blending refuse, charging incineration furnaces and removing the waste ash resulting from several thousand tonnes of refuse every year places high demands on crane installations and their operators. In order to operate economically, the engineered cranes must process large volumes refuse, RDF (refuse derived fuel) and ash. Cranes that operate in these facilities have to be able to provide high handling rates, guarantee high availability and ease of maintenance.
As bunkers are becoming deeper, the majority of grab operation are at substantial distances below the crane level. Anti-sway control is an imperative as it aids the crane operator to accurately control the grab and reduce the damage of the grab and of the bunker walls. In addition, blending and storage operations cannot be carried out at increase effectiveness
MHE-Demag cranes are specified and tailored for the particular application. Unlike others, our solutions are scalable to cater to the smallest of power generation facilities consuming a few hundred tonnes of refuse per day to large scale plants in excess of 1000t per day.
Whether the cranes are required for the charging of the additives in cement production such as FDG, gypsum and sand or the charging of furnace, our engineered grabbing cranes follow a stringent heavy-duty classification in order to secure the continuous feeding of the product. These high duty production cranes have a task to deliver the materials within a defined cycle time and are generally specified with high speeds and accelerations plus anti sway systems to optimise the cycle. These cranes are operated either remotely from a remote operator cabin with ergonomically designed work stations or from an enclosed cabin located on the cranes. Our fully semi-automatic or automated engineered cranes ensure that the additives are efficiently stored and that the right blend is staged ready to serve each step in the production process. The warehouse management system uses scanners to detect the fill levels of the material storage compartments and provides individually defined feedback.
The cranes can be equipped with either an electro-hydraulic grab suspended from a heavy duty single winch or, as some customers prefer, the grab is purely mechanical operated suspended from two winches, one functioning as a lifting mechanism, the other as an opening winch and a closing winch. In compliance with recommendations from international standards, our closing winches are designed to cope with 100 % of the safe working load.