同时，构建了一种预分选、主分选结合的新型分选平台。

And a new type of sorting platforms is proposed, including pre-sorting subsystem and main sorting subsystem.

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针对铝土矿资源特点，设计了一种适合铝土矿预分选脱硅的重选设备。

According to the properties of bauxite, a new gravity separator for silicates removal from bauxite has been designed for the pre-separation of bauxite.

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首先讨论了信号预分选器的方案、数学模型及相关理论，验证了系统的可行性。

First a mathematical model and associated theory of the signal sorting system are studied to verify the the feasibility of this system.

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