Repository logo

Browsing by Subject "grain composition curves"

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Sposoby optymalizacji składu ziarnowego i kształtu ziaren kruszyw mineralnych w produktach kruszarek szczękowych
    (2006) Gawenda, Tomasz; Naziemiec, Zdzisław; Tumidajski, Tadeusz; Saramak, Daniel
    The aim of the article is presentation of ways of optimisation for physical properties of aggregates (grain composition, shape of surface) from the viewpoint of constructional and road industry needs. On the basis of laboratory research there are worked out principles of forecasting of grain composition of comminution products in crushers as regards yields of classes and participation of irregular grains. Forecasts are based on making parameters of grain curves approximation formulas dependent conditional on both properties of mineral raw materials and technological characteristics of crushers (level of fill of the chamber, width of outlet crack, frequency of jaw's vibration and it's jump, shape of jaws). Yield of irregular grains is mainly adjusted by a selection of the shape of jaw and by parameters mentioned above. It was carried out industrial verification of obtained laboratory results. Essential stage of research was an establishment of hierarchy of influence of investigated factors on comminution effects. Worked out mathematical models were the base selection of crushers in order to gain best results in production of aggregates.