Method for recovering tantalum-niobium, lepidolite and feldspar powder by utilizing difficult-to-treat mine solid waste

Abstract

The invention discloses a method for recovering tantalum-niobium, lepidolite and feldspar powder by utilizing difficult-to-treat mine solid waste. The method is characterized in that the difficult-to-treat mine solid waste is taken as a raw material, wherein the difficult-to-treat mine solid waste is a valuable component material containing a trace of (Ta, Nb)2O5, lepidolite and feldspar, and themethod comprises the step of recovering the tantalum-niobium concentrate, the feldspar powder and the lepidolite, recovering of the tantalum-niobium concentrate is achieved though the following steps,the series-connection technology of weak magnetism, medium magnetism and strong magnetism is carried out on the difficult-to-treat mine solid waste raw material for separation of iron slag, magneticminerals and non-magnetic mineral so that the influence of iron minerals on the reselection of the tantalum-niobium ore can be eliminated, a tantalum-niobium ore waste stone raw material is obtained,the tantalum-niobium ore waste stone raw material undergoes classification by adopting a stage grinding-stage separation process method, coarse grains enter a ball mill for ore grinding, a high-frequency vibration fine sieve is adopted for carrying out intensifying classification on the fine fraction, and then the tantalum-niobium concentrate and the feldspar-lepidolite mixture with tailings beingiron-tantalum-niobium contained weak-magnetic impurities are prepared. The method has the advantages that the technology is simple, the efficiency is high, the economic and technical benefits are obvious, and the recovery rate of the tantalum-niobium and other mineral resource products is high.

Description

Technical field: [0001] The invention relates to a method for recovering tantalum, niobium, lepidolite and other mineral materials from refractory mine solid waste, in particular to a method for recovering tantalum, niobium, lepidolite and feldspar powder from refractory mine solid waste. Background technique: [0002] my country is the country with the largest stockpiles of waste rocks and tailings in the world. In 2013, the total amount of waste rocks produced by metal mining was 4.947 billion tons, the amount of tailings was 1.649 billion tons, and the total stockpiles of tailings and waste rocks exceeded 61 billion tons. . With the continuous reduction of medium-rich ore and easy-to-mining tantalum-niobium ore, a large number of low-grade, complex and difficult-to-separate surface ores and waste ores are gradually increasing. Therefore, the efficient development and comprehensive utilization of such refractory tantalum-niobium-containing mine solid waste resources has be...

AI Technical Summary

Problems solved by technology

Flotation is the most effective method for the separation of lepidolite and feldspar minerals, but currently commonly used flotation agents such as oleic acid have strong collection capacity but poor selectivity. Therefore, with the development of refractory tantalum, niobium and lithium resources Strengthening, how to develop a new lepidolite high-efficiency collector with strong collection capacity, good selectivity, non-toxicity and low price will be an important direction for the flotation research of tantalum, niobium and lithium resources