Liquid-solid interference fluidized bed separator as well as separating method and application thereof

Abstract

The invention provides a liquid-solid interference fluidized bed separator as well as a separating method and application thereof. The separator mainly comprises a separator shell, a feeding device, a guide device, a fluid distributing device, a floating matter collecting device, a sediment collecting device and a control system, wherein the feeding device mainly comprises a vertical feeding pipe and an overflow pipe, the sediment collecting device mainly comprises an inclined plate, and the control system comprises a plurality of pressure sensors. The separating method comprises the steps of: feeding by adopting the vertical feeding pipe and the overflow pipe; carrying out secondary uniform distribution and step size grading on discharged materials of the overflow pipe by adopting the guide device; determining a separating zone of a fluidized bed by adopting the pressure sensors; and arranging the inclined plate in a lower cylinder body of the separator to improve treating capacity and density control precision of the separator. The separator has the advantages of simple and compact structure, good stability, convenience for operation and capability of greatly improving density uniformity and stability of the fluidized bed, thereby the separating performance of the separator is improved and the application range of the separator is widened.

Description

technical field [0001] The invention relates to a sorting machine and a sorting method thereof, in particular to a liquid-solid fluidized bed sorting machine suitable for fine-grained mineral sorting and its sorting method and application, belonging to chemical industry and mineral processing field. Background technique [0002] Liquid-solid interference fluidized bed separator (Teetered Bed Separator, TBS) is a kind of enhanced gravity separation equipment, which can be used for fine-grained mineral separation. The separation mechanism is as follows: under the action of the rising water flow, the feed material forms a dense phase fluidized bed with a certain density, and stratification occurs based on the difference in slip velocity; light particles float up and become floating objects, while heavy particles sink and become sinking objects. A uniform and stable density in the separation zone of the fluidized bed is conducive to weakening the adverse effects of particle si...

AI Technical Summary

Problems solved by technology

However, this invention has the following problems: (1) the conical diverter plate has a relatively small weakening effect on the feeding speed, and the disturbance of the feeding can easily destroy the uniformity and stability of the density of the sorting area. At the same time, the low-density coarse particles in the feeding It is very easy to mismatch into the sink, making the sorting effect worse

However, it is difficult to determine the space-time distribution of the overflow area, the feeding turbulent flow area, the separation area, and the rising water flow control area interface, which is not convenient for the adjustment of the bed density; some inventions use a single pressure sensor (such as US Patent US4301001, Chinese Utility Model Patent 200720037745.0, China Invention Patent Application 201010116635.X), measure the average pressure from its installation position to the float overflow port, and thus obtain the average density of the bed in this area. Compared with the dual-sensor measurement method, this value is consistent with the actual The difference in density is greater, and, with the change of feed stability and feed properties, the measured average density fluctuates greatly, and the accuracy of bed density control is poor, which reduces the separation effect

Images