Screening plays a key role in mineral processing in the quarrying industry, ore and coal preparation as well as in the recycling sector. This applies especially in comminution, where only screening enables qualified, accurately sized material to be obtained from crushed material, ready for further processing or sale in this state. Traditional vibrating screens are either driven by eccentric shafts or vibrated by unbalanced weights and, depending on the mode of vibration, classified into circular-motion vibrating screens, linear-motion vibrating screens and elliptical-motion vibrating screens. Characteristic of all these is that the oscillating driving forces are introduced through the machines’ centre of gravity and the screens are supported at the front and rear in the conveying direction (Table 1). On account of this, the screen trays must be designed to be especially rigid and heavy, in order to permanently withstand the resulting high dynamic loads. In an assessment of the advan... See full list on news.bulk-online.com In the development of the new goovi®, the thyssenkrupp specialists initially concentrated on secondary and tertiary screening as here larger areas of application can be found in the field. These are applications in the gravel and aggregates supply sectors, in mining and recycling, where feed materials with a particle size up to 80 mm are screened with a minimum screen cut of around 2 mm. With regard to design, the focus of the new development was on the drive concept as this promised the greatest potential for optimization. But trailblazing developments have also been realized for the screen tray, screen support and the control system. Basically, the thyssenkrupp goovi® has been designed for the digital quarry and paves the way for industry 4.0 in processing plants. In the specification of the drive concept, the point of force introduction is of particular importance as this influences the static and dynamic sizing of the screen’s sidewalls. Simulations have shown that a screen shou... See full list on news.bulk-online.com With the overall design and many detail solutions, thyssenkrupp has developed a concept, which can certainly be described as revolutionary. Substantially reduced weights and heights are accompanied by a considerable increase in operational flexibility, product quality and performance, as a result of which the goovi® creates real added value. The detail features of the goovi® can be summarized as follows: 1. Possible applications in almost all secondary and tertiary screening stages 2. Simple, modular design, low height and low weight 3. Few rotating parts, simple maintenance, no lubrication needed 4. Low-cost transport as a construction kit and simple assembly at the installation site are possible 5. Ideal for replacing existing screens due to good adaptability to existing plants 6. Fully digitalized screen with its own control system for integration into distributed control systems 7. Optional, infinite adjustment as a circular-, linear- or elliptical-motion vibrating screen 8. Cus... See full list on news.bulk-online.com
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