## Bulk Density Characteristics of Grain Dust

dust weight in the layer, kg cross section area of the dust column, m^ layer thickness, m bulk density of dust, kg/m^ From equation [2] one obtains: . dw dy= --A-p = K. dP or 1-r^r dP [3] where X y dP pressure, kPa depth corresponding to x and measured from the top of the dust column, m …

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