A Low Chemical Consumption Concentrator with Composite Overflow Weir

Abstract

The invention relates to the field of coal slime water concentration and clarification, in particular to a concentrator with low chemical consumption and composite overflow weirs.The concentrator at least comprises a concentrator body.An overflow weir comprises annular overflow weirs and the composite overflow weirs, the annular overflow weirs are arranged on the periphery of the overflow weir, the composite overflow weirs are annularly arranged along the inside of the overflow weir, an inflation adjusting lifting and floating barrier is arranged on a side of each composite overflow weir and is used for adjusting overflow discharge rates, oblique settlement plates are arranged on the lower portions of the composite overflow weirs in fixed connection modes, and final clarification settlement treatment on rising overflow water can be carried out.The concentrator has the advantages that the movement speeds of horizontal flow in the concentrator body can be effectively reduced by the composite overflow weirs, accordingly, favorable settlement conditions can be provided for particles in ore pulp, the peripheral annular overflow weirs and the composite overflow weirs are jointly operated, and effects of obviously improving the processing efficiency of the concentrator and the clarity of the overflow water can be realized; the concentrator further comprises a driving stirring mechanism, the driving stirring mechanism can be driven by ore pulp feeding driving force to rotate, accordingly, the ore pulp and chemicals can be uniformly mixed with one another, and the concentrator is low in energy consumption, maintenance and chemical consumption.

Description

technical field [0001] The invention relates to the field of concentration and clarification of coal slime water, in particular to a low chemical consumption concentrator with a composite overflow weir. Background technique [0002] The thickener is a device that uses the flocculation and sedimentation of solid particles in the slime water to complete the continuous concentration of the slime water. Its essence is composed of a pool for sludge water sedimentation and a transport rake that collects the sediment to the discharge outlet. Its production process is continuous, the slime water is fed from the upper middle of the pool body, the clarified overflow water flows into the overflow tank from the periphery of the pool body, and the settled product (bottom flow) is used from the discharge port at the center of the cone bottom of the pool body. Pump out. At the same time, in the process of transporting the rake to enrich the sediment along the bottom of the pool to the ce...

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Problems solved by technology

Existing concentrators have done a lot of research on the transmission device and body structure, but there are few innovations in the design of the overflow weir. In addition, how to ensure that the chemical and slime water are fully mixed and the degree of turbulence in the concentrator body is small, how to ensure The harrow frame of the thickener works stably, preventing the harrow frame of the thickener from being "pressed" by high-concentration materials has become a research hotspot in this field in recent years

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