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Method for recovering mica and feldspar quartz from rare metal beneficiation tailings

A rare metal, flotation tailings technology, applied in chemical instruments and methods, flotation, wet separation, etc. The effect of resource utilization efficiency, strengthening adsorption, and improving recovery rate

Active Publication Date: 2020-07-10
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main minerals of rare metal beneficiation tailings are mica, feldspar, and quartz. At present, the recovery of feldspar and quartz from tailings generally adopts processes such as grinding, screening, desliming, magnetic separation, and flotation. The process is complicated and the cost is high; When selecting mica, the collectors mainly use amines or oleic acid, etc., and there are problems such as foam deficiency and poor selectivity. When flotation mica, part of the feldspar that belongs to the silicate will be floated out, resulting in feldspar and quartz minerals. The recovery rate is low, the feldspar and quartz concentrates contain high iron, and the amount of secondary tailings is large, which is not conducive to the bulk utilization of tailings

Method used

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  • Method for recovering mica and feldspar quartz from rare metal beneficiation tailings
  • Method for recovering mica and feldspar quartz from rare metal beneficiation tailings
  • Method for recovering mica and feldspar quartz from rare metal beneficiation tailings

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Experimental program
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Effect test

Embodiment 1

[0037] 1. Raw materials

[0038] The composition of rare metal (tantalum and niobium) beneficiation tailings in a certain place in Guangdong is shown in Table 1.

[0039] Table 1 tailings multi-element analysis results (%)

[0040] ingredients CaO MgO K 2 o

Na 2 o

al 2 o 3

SiO 2

S Fe content 0.61 0.12 4.61 2.69 15.64 63.62 0.2 1.07

[0041] The mineral composition of tailings is mainly feldspar, quartz, mica and so on. The tailings fineness -0.074mm accounts for 52.35%, the relative content of mica minerals is about 10% to 15%, the relative content of feldspar minerals is about 45% to 50%, and the relative content of quartz minerals is about 35% to 40%. The mineral content of the three minerals in the mine exceeds 95%.

[0042] 2. Key equipment: (all existing equipment)

[0043] Flotation cell, ball mill, high gradient strong magnetic separator, disc vacuum filter, 101 electric oven.

[0044] Three, the specific ...

Embodiment 2

[0055] 1. Raw materials

[0056] The composition of rare metal tailings (tantalum and niobium) in a certain place in Hunan is shown in Table 2.

[0057] Table 2 tailings multi-element analysis results (%)

[0058] ingredients CaO MgO K 2 o

Na 2 o

al 2 o 3

SiO 2

S Fe content 0.26 0.023 3.72 3.09 13.05 72.45 0.063 1.04

[0059] The mineral composition of the tailings is mainly feldspar, quartz, mica, etc., and the tailings fineness -0.074mm accounts for 71.76%. The relative content of mica minerals is about 10% to 15%, the relative content of feldspar minerals is about 35% to 45%, the relative content of quartz minerals is about 35% to 45%, and the content of the three minerals in the tailings exceeds 90%.

[0060] 2. Key equipment: (all existing equipment)

[0061] Flotation cell, ball mill, high gradient strong magnetic separator, disc vacuum filter, 101 electric oven.

[0062] Three, the specific operation proces...

Embodiment 3

[0072] 1. Raw materials

[0073] The composition of rare metal tailings (tungsten) in a certain place in Hunan is shown in Table 3.

[0074] Table 3 tailings multi-element analysis results (%)

[0075] ingredients CaO MgO K 2 o

Na 2 o

al 2 o 3

SiO 2

S Fe content 0.32 0.02 1.65 6.12 14.35 76.18 0.021 0.51

[0076] The mineral composition of the tailings is mainly quartz, feldspar, mica, etc., and the tailings fineness -0.074mm accounts for 63.41%. The relative content of mica minerals is about 11% to 13%, the relative content of feldspar minerals is about 45% to 50%, the relative content of quartz minerals is about 30% to 35%, and the content of the three minerals in the tailings exceeds 95%.

[0077] 2. Key equipment: (all existing equipment) flotation cell, ball mill, high gradient strong magnetic separator, disc vacuum filter, 101 electric oven.

[0078] Three, the specific operation process:

[0079] In this ex...

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Abstract

The invention provides a method for recovering mica and feldspar quartz mixed minerals from rare metal beneficiation tailings, mica and feldspar quartz are floated and recovered by adopting a high-efficiency environment-friendly novel inhibitor and a collecting agent, the test process comprises roughing, scavenging, ore grinding and strong magnetic separation, and the magnetic separation tailingsare feldspar quartz minerals. The feldspar quartz mineral recovery rate can reach 90% or above, the iron content is smaller than 0.08%, the sintering whiteness is 65 or above, and the feldspar quartzmineral can be used as a high-quality raw material in ceramic and glass industries. The mica concentrate can be used as filler, and the magnetic concentrate can be applied to building materials. The method is simple in technological process, the wastewater can be recycled after being simply treated, and tailing-free mine tailings can be achieved.

Description

technical field [0001] The invention belongs to the field of recovery of rare metal tailings, in particular to a method for recovering mica and feldspar quartz from rare metal dressing tailings. Background technique [0002] my country is a big country in the production and consumption of building materials such as ceramics and glass, and needs a large amount of high-quality feldspar and quartz resources to provide support. The over-exploitation of non-metallic mines in my country in recent years, and the damage caused by the development, such as land and vegetation, and other environmental problems are increasing day by day. Feldspar and quartz resources, metal mines are facing comprehensive utilization and application of tailings, so the demand for non-metallic mineral resources such as feldspar and quartz has shifted to the metal mining industry. [0003] After mining and recycling valuable metals in metal mines, the amount of tailings produced accounts for the majority o...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D1/02B03B7/00B03B9/00B03D101/02B03D101/06B03D103/02
CPCB03B7/00B03B9/00B03D1/018B03D1/02B03D2201/02B03D2201/06B03D2203/02
Inventor 周虎强王全亮赵建湘文春华
Owner HUNAN RES INST FOR NONFERROUS METALS
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