Single particle impact breakage characterization of materials by drop weight testing

• Autorzy: Genç O. , Ergün L. , Benzer H.

Warianty tytułu

PL

Zastosowanie testu zrzutu ciężaru do opisu kruszenia udarowego pojedynczego ziarna

• Języki publikacji: EN

Abstrakty

EN

A drop weight tester was designed for the purpose of analyzing single particle impact breakage characteristics of different materials. Test results were evaluated through the breakage distributions of different size fractions at various impact energy levels. Breakage parameter t10 (Narayanan, 1986) is used to represent the degree of size reduction which is assumed to be represantative of the breakage product size distribution obtained from drop-weight tests. Relation between specific comminution energy level and breakage index number (t10) was established on the size fractional base so that the variation in impact breakage characteristics of different materials can be evaluated. It can be concluded that, drop-weight test method is a useful and practical way of evaluating the impact strengths of various materials on the size fractional base and results of which can be used in the mathematical modelling of autogenous and ball milling.

PL

Analizowano skutki kruszenia udarowego pojedynczego ziarna różnych materiałów za pomocą metody zrzutu ciężaru. Wyniki badań oceniano drogą analizy rozkładów kontrolowanych klas ziarnowych przy różnych poziomach energii udaru. Stopień pomniejszania ziarn w teście zrzutowym odpowiadający rozkładowi rozmiarów ziarn produktu skruszonego reprezentował parametr rozkruszenia t10 zaproponowany w pracy Natarayanana (1986). Zależność pomiędzy właściwą energią rozdrabnia i indeksem skruszenia t10 oceniano na podstawie rozmiaru ułamkowego, co umożliwia szacowanie zmienności charakterystyki kruszenia udarowego różnych materiałów. Stwierdzono, że metoda testu zrzutu ciężaru jest użytecznym narzędziem oceny naprężeń udarowych różnych materiałów na podstawie rozmiaru ułamkowego i może być wykorzystana w modelowaniu matematycznym procesów mielenia w młynach autogenicznych i kulowych.

Słowa kluczowe

EN

grinding; modelling; breakage function; drop weight test

PL

mielenie; modelowanie; metoda zrzutu ciężaru; kruszenie udarowe

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2004
• Tom: Vol. 38
• Strony: 241--255
• Opis fizyczny: Bibliogr. 25 poz.

Twórcy

autor

Genç O.

• Hacettepe University, Dept. of Mining Engineering, 06532, Ankara-Turkey

autor

Ergün L.

autor

Benzer H.

• Hacettepe University, Dept. of Mining Engineering, 06532, Ankara-Turkey

Bibliografia

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