In today's increasingly scarce mineral resources, the reuse of tailings resources has become an important way for sustainable development of mining. The low-grade fluorite ore in a certain scheelite tailings, although not high in grade, can still be effectively recovered and utilized through scientific beneficiation technology. This article will provide a detailed introduction to this process and explore how to recover low-grade fluorite from scheelite tailings.
Scheelite tailings are by-products produced during the beneficiation process of scheelite ore, which contain a certain amount of fluorite (CaF2). Fluorite, as an important non-metallic mineral, is widely used in fields such as refrigerants, smelting, ceramics, and glass manufacturing. With the gradual reduction of high-grade fluorite ore, the recycling and utilization of low-grade fluorite ore becomes particularly important.
The CaF2 content in a certain scheelite tailings is 18.45%, which belongs to low-grade fluorite resources. Due to the low grade and complex mineral composition of fluorite in tailings, traditional beneficiation methods are difficult to achieve efficient recovery. Therefore, conducting targeted research on mineral processing technology is of great significance for improving resource utilization efficiency.
(1)Magnetic separation waste disposal
Firstly, a high gradient magnetic separator is used to magnetically separate and dispose of tailings. Due to the presence of a large amount of weakly magnetic minerals such as garnet in tailings, and the low content of fluorite present in magnetic gangue, magnetic separation can effectively remove some gangue minerals and improve the selection grade of fluorite.
(2)Closed circuit flotation test
The non-magnetic products after magnetic separation are further separated and enriched using flotation technology. During the flotation process, sodium carbonate is used as an adjusting agent, acidified water glass is used as an inhibitor, and sodium oleate is used as a collector to conduct a closed-loop test process of "1 rough selection, 1 sweeping selection, and 6 selection".
Through the above beneficiation technology scheme, the final fluorite concentrate obtained has a CaF2 grade of 96.93% and a recovery rate of 64.25%. This result not only proves the feasibility of the technical solution, but also provides a reference for the recovery of other similar low-grade fluorite ores.
This technical solution has the following advantages:
Efficiency: By combining magnetic separation and flotation, efficient recovery of fluorite has been achieved.
Environmental friendliness: reduces the discharge of tailings and reduces environmental pollution.
Economy: It improves the utilization rate of resources and has good economic benefits.
With the continuous optimization and improvement of technology, this technical solution is expected to be applied in a wider range of low-grade fluorite ore recovery fields.
The research and application of low-grade fluorite ore recovery technology in scheelite tailings not only improves the efficiency of resource utilization, but also provides new ideas for the green development of mining. In the future, with the continuous progress and innovation of technology, we have reason to believe that more tailings resources will be effectively utilized and contribute to the sustainable development of society.
