Method for sampling closed tailing pond of valley type metal mine and determining re-selection scheme

Abstract

The invention provides a method for determining a sampling and resource recycling scheme of a valley-type metal mine tailing pond, which comprises the following steps of: formulating a three-parallel-line point distribution and drilling sampling method for sampling on the basis of engineering early-stage design data of the valley-type metal mine tailing pond and production data of a dressing plant within the service life of the tailing pond; and carrying out particle size analysis, and testing the grade of the to-be-recycled component of each particle fraction. The method comprises the following steps: selecting samples in various grade ranges of to-be-recycled components, carrying out ore grinding and sorting ore dressing tests, determining critical valuable component grades and development areas of tailings recleaning, mixing all the samples of which the grades are greater than the critical grades, and determining a tailings recleaning scheme and a concentrate scheme through systematic ore dressing tests. According to the method, a basis is provided for formulating a mining scheme, a product scheme and a recycling scheme of the tailing resources, and reliable data is provided for feasibility research and economic evaluation before recycling of the closed tailing pond resources of the valley-type metal mine.

Description

technical field [0001] The invention relates to the technical field of mineral processing sampling and tailings resource reselection, in particular to a method for sampling and determining a reselection plan for a valley-type metal mine closed tailings pond. Background technique [0002] Since entering the 21st century, the comprehensive utilization of tailings has shown increasingly prominent importance in the entire mining and metallurgical industry chain. The shortage of resources in our country and the country's strategic security problems in terms of resources have become more and more prominent, and the resource attributes of tailings have been paid more and more attention. The accumulation of a large number of tailings has a serious impact on the environment and land resources, and at the same time, there are great potential safety hazards. In 2018, the total output of tailings in my country was about 1.211 billion tons. Among them: iron tailings produced the larges...

AI Technical Summary

Problems solved by technology

The representativeness of the sample is insufficient, and it cannot fully reflect the moisture content, particle size composition, and spatial distribution of valuable components in different areas of the tailings pond, which in turn affects the suitable grinding fineness, sorting critical grade, grinding fineness, product plan, Determination of sorting process

[0006] In addition, there is currently no systematic evaluation method at home and abroad for the definition of the mining area of ​​the valley-type metal mine tailings pond and the determination of the product plan

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