A series of formulas for calculating ore loss and dilution on the condition of the single hopper opening are given based on the expectation body principle of drawing ore.

本文根据放出期望体理论导出了一整套单漏口条件下计算损失贫化的公式。

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Hydraulic Cylinders for opening and closing of hopper, including bearings and shafts.

开启关闭货舱口的油缸，附轴承和轴系。

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Each shaft is connected to screw without core in material pipe, there is opening in middle section of material pipe, there is hopper on opening, and there is agitating device in hopper.

每根主轴都与料管内的无芯螺旋连接，料管中段上部开口，开口上设料斗，料斗内设搅料装置。

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