Joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore

A technology for pyrrhotite and iron ore, which is applied in the beneficiation field of copper pyrrhotite ore, can solve the problems of difficult activation, loss of pyrite ore, waste of resources, etc., and achieve reduction of lime consumption, efficient collection, and reduction of interference effect

Inactive Publication Date: 2011-08-17
GUANGZHOU RES INST OF NON FERROUS METALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is more difficult to activate pyrrhotite after such a high alkali suppression, especially for pyrrhotite ores with complex crystal structure types, because some Fe in pyrrhotite 2+ Ions are covered by Fe 3+ ions instead, in order to maintain the balance of electricity prices, iron atom vacancies appear
With Fe 3+ The increase of ions and the number of vacancies (x value) determine that pyrrhotite has monoclinic, hexagonal, and polymorphic variants that exist in the ore to be sorted at the same time. This change in crystal chemical properties makes pyrrhotite magnetic and floatability are uneven, and it is difficult to effectively eliminate the interference of pyrrhotite in a changing state on the floating copper process under a single separation condition or separation method, thereby seriously affecting the recovery rate of pyrite, making A large amount of pyrite is lost in the abandoned tailings, which not only causes a huge waste of resources, but also seriously pollutes the environment with sulfur-containing waste

Method used

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  • Joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore
  • Joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore
  • Joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore

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example 1

[0035] Example 1: Copper pyrite ore raw ore contains 0.52% copper and 18.66% sulfur. First add lime to the ball mill and grind the raw ore to -0.074mm, accounting for 80%; add inhibitor DB-5 and stir for 3 minutes according to the drug system in Table 3, add DY copper sulfide ore collector and stir for 2 minutes to carry out preferential floating copper (pH =8-9); floating copper tailings were added with collector DY for copper scavenging three times; priority floating copper concentrate was added to activated carbon for regrinding and drug removal, and copper coarse concentrate was reground to -0.074mm, accounting for about 90%; Under the magnetic field strength of 0.45 T, the reground copper concentrate was subjected to magnetic separation to remove part of the pyrrhotite, and pyrrhotite concentrate 1 was obtained; the magnetic separation tailings were added with inhibitor DB-4 and stirred for 5 minutes, DB-5 and ZnSO 4 Stir for 3 minutes, and collector DY for 2 minutes for ...

example 2

[0036] Example 2: The raw ore of copper pyrite containing 0.66% copper and 15.86% sulfur was tested by applying the above process under the same steps and chemical system conditions. First, lime was added to the ball mill to grind the raw ore to -0.074mm 80%; press Figure 4 Add inhibitor DB-5 and stir for 3 minutes, add DY copper sulfide collector and stir for 2 minutes to carry out preferential floating copper (pH=8-9); add collector DY to floating copper tailings to carry out three copper Sweeping; the priority is to add activated carbon to the floating copper concentrate for regrinding to remove the drug, and the copper coarse concentrate is reground to -0.074mm, accounting for about 90%; under the magnetic field strength of 0.45 T, the reground copper concentrate is removed by magnetic separation pyrrhotite, and get pyrite concentrate 1; add inhibitor DB-4 to magnetic separation tailings and stir for 5 minutes, DB-5 and ZnSO 4 Stir for 3 minutes, and collector DY for 2 m...

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Abstract

The invention relates to a joint magnetic flotation sorting method for complex magnetic pyrite copper-containing pyrite ore, which comprises the following steps: primary ore grinding, prior floating copper, re-grinding for de-reagent, magnetic separation desulfurization iron from copper rough concentrates, copper selection from magnetic tailings and pyrite selection. A part of single square magnetic pyrites which have stronger magnetism and play a great role in copper selection interference is separated from the prior floating copper rough concentrates by the adoption of a magnetic method so as to reduce the interference to the copper selection process, and when the prior floating copper is roughly selected, iron pyrite is inhibited in low-alkali mediums by the adoption of lime and DB-5 combined inhibitors, so that the consumption of the lime is reduced, and the iron pyrite can be efficiently collected without the use of activators in the subsequent process flow of selecting pyrite from prior floating copper tailings; and by the adoption of the joint magnetic flotation sorting method, the grade of copper is larger than 18 percent and the recovery rate is larger than 74 percent in the copper concentrates; and the grade of sulfur is larger than 40 percent and the recovery rate is larger than 86 percent in pyrite concentrates.

Description

Technical field [0001] The present invention belongs to the field of mineral selection technology, involving a complicated mines in copper -sulfur and iron ore containing complicated magnetic pyrite, which specializes in a copper sulfur ore ore containing complex magnetic yellow iron ore with priority floating copper and magnetic selection.Mining method. Background technique [0002] For the sorting process of copper sulfur minerals, the key is how to achieve the problem of efficient recovery of copper minerals and the problem of effective suppression or exclusion of iron sulfide minerals.When the sulfide ore minerals in the ore are both pyrite (FES 2 ), And magnetic pyrine (Fe 1-x S), especially due to the uneven magnetic and floating resistance of magnetic yellow iron ore, it has a great effect on the sulfur sorting effect.In previous practice, the amount of inhibitors of sulfur ore was increased to ensure the copper concentrate index, but this method brought difficulties to th...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/001B03B1/00B03D103/02
Inventor 喻连香汤玉和刘聪邱冠周邱显杨刘丁强何晓绢梁冬云王海东黎国进朱传明董天颂钟国建张红英
Owner GUANGZHOU RES INST OF NON FERROUS METALS
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