Method for recovering nepheline ore in nepheline ore tailings

Abstract

The invention discloses a method for recovering nepheline ore in nepheline ore tailings. The method includes the steps that the nepheline ore tailings are smashed and ground to obtain tailing primary pulp; a hydrocyclone is used for classifying the tailing primary pulp; the tailing primary pulp classified by the hydrocyclone is concentrated, so that the concentration of the tailing primary pulp is made to at least reach 3.5%; iron removal and pyroxene removal treatment is carried out on the concentrated tailing primary pulp by the adoption of wet-type low-intensity magnetic separation and at least one level of high-gradient magnetic separation; flocculating agents are added to the tailing primary pulp subjected to iron removal and pyroxene removal treatment in a stirring mode; the tailing primary pulp with the added flocculating agents is conveyed to a settling pond through a pipeline to be subjected to standing treatment; supernatant in the settling pond is discharged in an overflowing mode, and pulp flocculating constituents are fed into a filter press to be filter-pressed into filter cakes; and the filter cakes fall freely under the effect of gravity, and are dispersed under an impact effect and then conveyed to a dry storage yard through a vehicle to be recovered.

Description

technical field [0001] The invention relates to a finishing treatment process of ores, in particular to a method for recovering nepheline ore from nepheline ore tailings. Background technique [0002] Nepheline is a rare non-metallic mineral. At present, except China, only four mines in Canada, Norway, Brazil, and Turkey are mining this resource. It is supplied to developed countries such as Europe and the United States as glass, ceramics and chemical products. Raw materials for production. Since nepheline ore often coexists with dark minerals pyroxene, biotite, and iron oxides in China, it is necessary to remove the dark minerals (iron, calcium, magnesium) in the raw ore through beneficiation, and a large amount of tailings will be produced during the above refining . [0003] At present, most of the domestic concentrators generally have two ways to deal with this problem: one is to transport it to the tailings pond for storage through pumps and pipelines; the other is to...

AI Technical Summary

Problems solved by technology

However, these two methods have their own shortcomings. For the former, the investment in building tailings ponds is quite large, and the site selection and subsequent approval processes are quite cumbersome. The most important thing is the safety of tailings ponds. It is a major source of danger, and if there is a slight error, ...

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