Sorting process of micro-fine particle low-grade tantalum-niobium ore

Abstract

The invention discloses a sorting process of micro-fine particle low-grade tantalum-niobium ore. The sorting process aims at solving the technical problems that an existing sorting mode of micro-fineparticle low-grade tantalum-niobium ore is complex in process, long in flow, low in efficiency and high in energy consumption. The rough steps of the sorting process are as follows: performing magnetic separation on tantalum-niobium ore by a high-gradient superconducting magnetic separator under the condition of low magnetic field intensity; removing iron-containing gangue minerals; then enablingthe tantalum-niobium rough concentrate to be subjected to flotation, wherein the flotation process adopts a process of one-time roughing, two-time concentration and two-time scavenging and sequentialreturning of middlings, obtaining tantalum-niobium bulk concentrate through flotation, finally, enabling the tantalum-niobium-tungsten bulk concentrate to be subjected to magnetic separation through ahigh-gradient superconducting magnetic separator under the condition of high magnetic field intensity, wherein the high-intensity magnetic separation adopts a one-time roughing, one-time concentration and one-time scavenging process to obtain tantalum concentrate and niobium concentrate. According to the sorting process, through a magnetic-floating combined separation mode, the process flow is simplified and shortened on the whole, and operation and management are easy, so that the production energy consumption and the production cost are reduced, and the sorting efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of mineral separation, and specifically belongs to a short-flow separation process for separating fine particles and low-grade tantalum-niobium ore by using a high-gradient superconducting magnetic separator combined with a flotation process. Background technique [0002] Tantalum-niobium ore refers to the general term for minerals containing tantalum and niobium. There are more than 100 kinds of them. The main ores that can be mined are tantalite, niobite and pyrochlore. Tantalum and niobium are mainly used for the preparation of tantalum and niobium oxides and the extraction of tantalum and niobium, etc. At present, the grade analysis of tantalum and niobium ore is generally performed by a dedicated tantalum and niobium ore LANSonic ore analyzer for rapid analysis. [0003] There are many types of tantalum-niobium deposits in my country, complex mineralization and scattered distribution. At the same time, ...

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a sorting process for fine-grained and low-grade tantalum-niobium ore, which aims to solve the problem of existing fine-grained, low-grade tantalum-niobium ore. Complicated, long process, low efficiency and high energy consumption, which greatly increases the cost of separation, and the loss of tantalum concentrate is too much, which reduces the technical problem of the utilization rate of tantalum and niobium resources; the separation process uses magnetic- The flotation combined sorting method simplifies and shortens the technological process as a whole, and is easy to operate and manage, thereby reducing production energy consumption and production costs, and improving sorting efficiency. At the same time, the sorting index is good and stable, and the process is energy-saving and environmentally friendly. Moreover, the resource recycling rate is high, and the efficient sorting, development and utilization of fine-grained and low-grade tantalum-niobium ore resources are realized.

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