RESULTS WITH A HURRICLON CENTRIFUGAL SEPA RATOR FOR DEDUSTING A ROLLER GRINDING MILL

For a comparable external diameter the so-called Hurriclon double dip tube separator, developed by Voest-Alpine Finaltechnik. Krems. is capa ble of achieving a substantially higher volume throughput than convent ional cyclone separators at very low pressure losses. In many applicat ions this means that it is possible to dedust the existing gas volume flow with only one separator. This can result in great cost savings by dispensing with rotary feeder valves, wear linings and steel structur es; the lower total investment costs then lead to greater cost-effecti veness. In order to achieve maximum energy saving it is also possible to instal a dip tube distributor which is almost as simple as the dip tube itself. This dip tube distributor has already been used with grea t success in the cement industry in diameters of up to 1800 mm. Pay-ba ck times of less than 2 years are achieved when dip tube distributors are retrofitted to existing cyclone separators. Installation of new ce ntrifugal separators using the Hurriclon system pays for itself in abo ut 3 to 4 years just through the energy which can be saved Some fairly recent results are given which were obtained during the dedusting of a roller grinding mill used at Harz Kalk GmbH as a comparison with con ventional cyclone separators.