Issue 12/2009

Content

Architecture photo | Architekturfoto

Company News | Firmennachrichten

Goerg & Schneider GmbH u. Co. KG investing in state-of-the-art screening technology

To further enhance the familiar high quality of milled chamottes by Goerg & Schneider, the company recently installed a Rhewum type-WA screening machine in their non-plastics pulverizing plant. The new screening equipment significantly improved the achievable separation efficiency, particularly for such fractionated particle ranges as 0.2 to 0.8 mm. Fine grit ranging below 200 µm can now be systematically managed. These benefits derive from the function principle of Rhewum’s type-WA slanted screening machine with an inclined screen mesh. Rugged electromagnetic drives mounted outside of the screen housing rock the knocker shafts to make the screen mesh oscillate. The high-frequency motion of the rocker shaft throws the material straight down off of the screen mesh. The gravitational force acting on the milled chamotte can exceed 15 g, or more than 15 times the normal rate of gravitational acceleration. The high acceleration permanently destroys agglomerates, and the separation efficiency improves markedly in the course of milled-chamotte production. Moreover, this principle of function enables a very high throughput rate specific to the screen area. All during screen operation, the electromagnetic drives can be adjusted by way of an electronic control arrangement, so the vibration intensity can be altered as appropriate for changing material properties, hence significantly improving the consistency of the obtained grain sizes. This adjustability also makes it possible to readjust the targeted grain size in terms of separating boundary. Consequently, a target particle range of 0 to 0.2 mm, for example, can be influenced by as much as ± 5% in its resultant particle-size profile. That way, the separating...

more

Interview

Products | Produkte

Technical Paper | Fachbeitrag

Modularised dies

Fazzini Filiere srlModularized dies Italian die producer Fazzini Filiere, who can look back on a 50-year tradition, presented a standful of products...

more

Report | Reportage

Dipl.-Ing. Anett Fischer

“Colours you have to see”

Under this slogan, Opavsky, the long-established smelting and glaze fabrication firm, showcased its portfolio of products at this year’s Ceramitec....

more