1. Chiyero chehukuru hwezvimedu zvechinhu chisati chapwanywa kusvika pahukuru hwezvimedu zvechigadzirwa mushure mekupwanywa.

i=Dmax/dmax (Dmax—-Saizi yepamusoro yezvikamu zvechinhu chisati chapwanywa, dmax—-saizi yepamusoro yezvikamu zvechigadzirwa mushure mekupwanywa)

2. Chiyero chehupamhi hunoshanda hwenzvimbo yekudyisa yemuchina wekupwanya kusvika pahupamhi hwepaburi rekuburitsa mvura

i=0.85B/b (B—–Upamhi hwechiteshi cheCrusher feed, b—–Upamhi hwekuvhura kweCrusher discharge, 0.85—-Iva nechokwadi chekuti crusher inoruma upamhi hunoshanda hwechinhu chacho.)

Kukosha kwehupamhi hweburi rekuburitsa: muchina wekuburitsa wakakora unotora upamhi hweburi rekuburitsa; muchina wekupwanya wepakati unotora upamhi hweburi rekuburitsa.

3. i=Dcp/dcp

(Dcp—avhareji yedhayamita yezvinhu zvisati zvapwanywa; dcp—avhareji yedhayamita yezvinhu mushure mekupwanywa)

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