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Flotation process for recovering micro-fine particle mica from micro-fine particle iron separation tailings

A technology of fine particles and fine particles, applied in flotation, solid separation, etc., can solve the problems of increased specific surface area and surface energy of fine particles, easy entrainment of coarse particles by machinery with small quality, difficulty in improving concentrate grade, etc., to achieve The lower limit of particle size is low, the separation index is good, and the effect of improving recovery efficiency

Inactive Publication Date: 2019-12-20
COLLEGE OF APPLIED SCI JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why it is difficult to effectively recover fine-grained mica minerals is that the selected minerals are severely muddled (the content of -0.038mm particles is generally above 35%), and the minerals are mixed with each other, so it is difficult to improve the concentrate grade. At the same time, the specific surface area and surface energy of fine particles Larger, with strong drug adsorption capacity, poor adsorption selectivity, small mass, easy to be entrained by coarse particles, etc.

Method used

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  • Flotation process for recovering micro-fine particle mica from micro-fine particle iron separation tailings
  • Flotation process for recovering micro-fine particle mica from micro-fine particle iron separation tailings
  • Flotation process for recovering micro-fine particle mica from micro-fine particle iron separation tailings

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Experimental program
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Effect test

Embodiment 1

[0024] Example 1: Iron dressing tailings 1 enters the classification 2 operation, removes the fine particle product 25 of -0.025mm particle size that is difficult to separate, and obtains the coarse particle product 3 of +0.025mm; adds the combination to the coarse particle product 3 in turn The dosage of regulator sodium hydroxide is 100g / t, the dosage of sodium carbonate is 50g / t, adjust the pH value of the pulp to 10; then add the dosage of mixed inhibitor water glass 1200g / t, the dosage of sodium hexametaphosphate 500g / t, and mix the collector The dosage of sodium oleate is 150g / t, the dosage of dodecylamine is 100g / t, the dosage of octadecylamine is 50g / t, the dosage of foaming agent pine alcohol oil is 30g / t, and the flotation roughing 4 is carried out; the foam product mica obtained in roughing 4 Coarse concentrate 20 does not add chemicals, and conducts the first beneficiation 5; the foam product obtained in the first beneficiation 5 is sequentially added with 450g / t of...

Embodiment 2

[0027] Example 2: Iron dressing tailings 1 enters classification 2 operation, removes the fine particle product 25 of -0.025mm particle size that is difficult to separate, and obtains + 0.025mm coarse particle product 3; in the coarse particle product 3, add the combination in turn The dosage of regulator sodium hydroxide is 120g / t, the dosage of sodium carbonate is 80g / t (adjust the pH value of the pulp to 11), the dosage of mixed inhibitor water glass is 1500g / t, the dosage of sodium hexametaphosphate is 800g / t, and the dosage of mixed collector oleic acid The amount of sodium is 200g / t, the amount of dodecylamine is 150g / t, the amount of octadecylamine is 60g / t, the amount of foaming agent terpineol oil is 45g / t, and the flotation roughing 4 is carried out; Mine 20 does not add medicament, carries out the first selection 5; Adds water glass consumption 550g / t successively to the foam product obtained in the first selection 5, terpineol oil consumption 20g / t, carries out the ...

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Abstract

The invention relates to a valuable mineral recovery process of tailings, in particular to a flotation process for recovering micro-fine particle mica from micro-fine particle iron separation tailings. According to the process, fine particles are removed by one-time grading operation; the flotation process is formed by one-time roughing, five-time concentration and one-time scavenging; middlings are selected, merged and subjected to dehydration, concentration and reagent removal treatment respectively; in the regime of agent, a combined regulator, a mixed inhibitor and a mixed collecting agentare used; the state of an obtained ore pulp is fully adjusted, the lower limit of the floatable granularity of mica minerals reaches 0.025 mm, high-quality mica concentrates are obtained, the yield of the mica concentrates is larger than or equal to 11.86%, the content of mica in the mica concentrates is larger than or equal to 97.21%, and the recovery rate of the mica is larger than or equal to48.25%. The mica recovery rate is high, the valuable mineral resource recovery efficiency is improved, and economic benefits are brought to enterprises.

Description

technical field [0001] The invention relates to a process for recovering valuable minerals from tailings, in particular to a flotation process for recovering fine-grained mica from fine-grained iron-separation tailings. Background technique [0002] my country is a country with poor per capita resources. 80% of the mineral resources are associated ore. The tailings of ore dressing often contain some valuable minerals worth recycling. If they are not recycled, a large amount of valuable minerals will be discarded in the abandoned tailings. Waste of resources and pollute the environment. With the continuous new development of beneficiation technology, equipment, process and reagents, it provides an important guarantee for the recovery of valuable minerals in tailings, and has become an urgent reality. The recovery of valuable minerals is an important aspect of comprehensive utilization of resources. [0003] Mica is an important non-metal resource and is widely used in modern ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03D1/01B03D1/008B03D101/06B03D101/02B03D101/04B03D103/04
CPCB03D1/002B03D1/008B03D1/01B03D2201/007B03D2201/02B03D2201/04B03D2201/06B03D2203/04
Inventor 胡海祥李广
Owner COLLEGE OF APPLIED SCI JIANGXI UNIV OF SCI & TECH
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