Pre-grading thickener

Abstract

The invention discloses a pre-grading thickener. The pre-grading thickener comprises a tank body (2), which has a separated upper thickening area (2-1) and a separated lower thickening area (2-2). The lower thickening area (2-2) is provided with an underflow pipe (6), and a slurry valve is arranged on the under flower pipe (6). A vortex grading cone (1) is arranged in the tank body (2). The overflow end of the vortex grading cone (1) is arranged in the upper thickening area (2-1) of the tank body (2), and the underflow end is arranged in the lower thickening area (2-2). The pre-grading thickener also comprises an overflow tank (3), which is arranged on the periphery of the upper thickening area (2-1) and is provided with a liquid discharge pipe (3-1). The provided thickener has a pre-grading function, can grade the mineral slurry and then thicken the slurry in different areas, and thus greatly improves the thickening efficiency. Compared to the conventional thickeners, the thickening performance of the provided pre-grading thickener on a unit area is prominently improved, and furthermore, the thickener has the advantages of compact structure and small occupied area.

Description

technical field [0001] The invention relates to the technical field of mineral processing equipment, in particular to a concentrator capable of performing pre-grading treatment on ore pulp. Background technique [0002] Concentration is a common operation link in the mineral processing production process. Its basic principle is to use the gravity of the ore (or ore agglomeration) to settle out of the slurry to achieve the purpose of dehydration. [0003] At present, conventional thickening equipment mainly includes thickeners, inclined plate thickeners, etc. [0004] Thickener is simple in structure and reliable in production. It is a thickening and dehydrating equipment widely used in mineral processing plants in my country. The production capacity per unit area of ​​ordinary concentrators is small. For the concentration and dehydration of ore materials, especially fine-grained ore materials, a large settlement area is required to achieve the effect of dehydration. It occu...

AI Technical Summary

Problems solved by technology

[0005] The main advantage of the inclined plate thickener is that through the addition of a large number of inclined plates, the sedimentation area of ​​the ore pulp is greatly increased. The ore pulp passes through the multi-layered space, which reduces the sedimentation distance of the particles and increases the sedimentation efficiency of the particles, which can be used for processing The pulp with higher concentration also has a better concentration effect on fine-grained materials. The disadvantage is that the inclined plate and tank are easy to block during long-term operation, resulting in fluctuations in production.

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