Process for finely treating rare-earth ores

Abstract

The invention belongs to the technical field of rare-earth production, and particularly relates to a process for finely treating rare-earth ores. The process comprises the following steps: grinding and preliminarily filtering collected rare-earth raw ores with a grinding device; adding calcium-containing minerals and a carbon-containing solid reducer into the ground rare-earth ore; reducing and melting the rare-earth ore in a smelting furnace at the temperature of 1500-1700 DEG C to obtain rare-earth slag and molten iron; cooling the rare-earth slag and molten iron, crushing the rare-earth slag, removing iron shot by adopting a magnetic separation mode to obtain a finished product rare-earth slag. The process can realize comprehensive grinding, ensures sufficient chemical reaction of the rare-earth raw ore and improves the enrichment ratio of rare-earth.

Description

technical field [0001] The invention belongs to the technical field of rare earth production, in particular to a rare earth ore refinement treatment process. Background technique [0002] Rare earths are known as industrial vitamins, and now they have become extremely important strategic resources. Rare earths are generally separated in the form of oxides. Although the reserves on the earth are huge, it is difficult to smelt and purify, and they are relatively rare, so they are named rare earths. Generally speaking, the rare earths on the earth exist in the form of rare earth oxides, which are widely used in many fields such as military affairs, metallurgy, petrochemical industry, glass ceramics and agriculture. Before smelting rare earth raw ores, rare earth raw ores need to be crushed. The crushing is not only conducive to speeding up the efficiency of smelting but also increasing the extraction rate of rare earths. However, the existing crushing devices generate noise dur...

AI Technical Summary

Problems solved by technology

Before smelting rare earth raw ores, rare earth raw ores need to be crushed. The crushing is not only conducive to speeding up the efficiency of smelting but also increasing the extraction rate of rare earths. However, the existing crushing devices generate noise during the crushing of rare earth raw ores. Large, uneven size of rare earth raw ore after crushing and more dust generated, polluting the environment and damaging the health of personnel, so the crushing process of rare earth raw ore is relatively extensive, resulting in a great waste of resources and environmental pollution

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