OCENA KVALITETA SINTEROVANOG PIROFILITA PRIMENOM METODE ISPITIVANJA KAVITACIONE OTPORNOSTI

Abstract

Pirofilit je mineralna sirovina pogodna za izradu šireg spektra proizvoda i primenu u različitim granama privrede (građevinarstvu, poljoprivredi, industriji hartije). Tehnologija prerade stena pirofilita je ekološki čista, a proizvodi dobijeni tehnološkom preradom pirofilita nisu kancerogeni. U radu su ispitivani uzorci pirofilita sinterovani na temperaturi 1150 ºC. Polazni uzorak pirofilita dobijen je iz ležišta Parsović-BiH. Eksperimentalno je određena otpornost ovog vatrostalnog uzorka na dejstvo kavitacije primenom ultrazvučne vibracione metode sa stacionarnim uzorkom prema standardu ASTM G32. Na osnovu vrednosti kavitacione brzine i analize morfologije oštećenja površine određena je otpornost na dejstvo kavitacije ispitivanog uzorka na bazi pirofilita i procenjena mogućnost njihove primene u hidrodinamičkim uslovima eksploatacije u kojima se očekuje pojava kavitacije.

Pyrophyllite is a mineral raw material suitable for the production of a wider range of products and application in various branches of the economy (construction, agriculture, paper industry). The technology of pyrophyllite rock processing is ecologically clean, and the products obtained by technological processing of pyrophyllite are not carcinogenic. The paper tested pyrophyllite sample sintered at temperaturi 1150 ºC. Initial sample of pyrophyllite were obtained from the Parsović-BiH deposit. The resistance of these refractory sample to the action of cavitation was determined experimentally using the ultrasonic vibration method with a stationary sample according to the ASTM G32 standard. Based on the value of cavitation velocity and analysis of surface damage morphology, the resistance to cavitation of these sample based on pyrophyllite was determined and the possibility of their application in hydrodynamic operating conditions in which cavitation is expected was asessed.