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Refining process for lepidolite in tantalum-niobium ore waste rocks

A process method, lepidolite technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve problems such as the outlet of tantalum-niobium ore waste rock

Active Publication Date: 2016-01-20
江西金辉再生资源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of the way out of the bulk mine industrial waste tantalum-niobium ore waste rock

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The ground pump weighs 10 tons of waste rock from the Yichun niobium-tantalum mine (also known as 414 mine), and its chemical composition is as follows (wt%): SiO 2 74.05, Al 2 o 3 15.20, K 2 O,3.69,Na 2 O4.28, CaO0.19, MgO0.07, Fe 2 o 3 0.988,TiO 2 0.013, Li 2 O1.062, Ta 2 o 50.0093, Nb 2 o 5 0.0051. After 10 tons of tantalum-niobium ore waste rocks are roughly crushed, medium crushed, and finely crushed by a jaw crusher, they are ball milled in a ball mill for 16 hours, and then classified by a spiral classifier. After that, it enters the permanent magnet magnetic separator together with the graded material less than 61μm (250 mesh) to remove magnetite, pyrrhotite and other strong magnetic ferrous minerals, and then enters the high gradient magnetic separator to remove limonite, hematite, etc. Weakly magnetic ferrous minerals, then enter the dense medium separation process, the selected density is 2.96g / cm 3 Tetrabromoethane, consumption is 35% of the pro...

Embodiment 2

[0024] The ground pump weighs 10 tons of waste rock from the Yichun niobium-tantalum mine (also known as 414 mine), and its chemical composition is as follows (wt%): SiO 2 71.57, Al 2 o 3 15.83,K 2 O3.25, Na 2 O3.68, CaO0.21, MgO0.08, Fe 2 o 3 1.354,TiO 2 0.016, Li 2 O0.961, Ta 2 o 5 0.0096, Nb 2 o 5 0.0048. After 10 tons of tantalum-niobium ore waste rocks are roughly crushed, medium crushed, and finely crushed by a jaw crusher, they are ball milled in a ball mill for 16 hours, and then classified by a spiral classifier. After that, it enters the permanent magnet magnetic separator together with the graded material less than 61μm (250 mesh) to remove magnetite, pyrrhotite and other strong magnetic ferrous minerals, and then enters the high gradient magnetic separator to remove limonite, hematite, etc. Weakly magnetic ferrous minerals, then enter the dense medium separation process, the selected density is 2.96g / cm 3 Tetrabromoethane, consumption is 28% of the pro...

Embodiment 3

[0026] The ground pump weighs 10 tons of waste rock from the Yichun niobium-tantalum mine (also known as 414 mine), and its chemical composition is as follows (wt%): SiO 2 72.80, Al 2 o 3 15.76,K 2 O3.16, Na 2 O4.15, CaO0.024, MgO0.06, Fe 2 o 3 1.265,TiO 2 0.018, Li 2 O0.945, Ta 2 o 5 0.0094, Nb 2 o 5 0.0049. After 10 tons of tantalum-niobium ore waste rocks are roughly crushed, medium crushed, and finely crushed by a jaw crusher, they are ball milled in a ball mill for 16 hours, and then classified by a spiral classifier. After that, it enters the permanent magnet magnetic separator together with the graded material less than 61μm (250 mesh) to remove magnetite, pyrrhotite and other strong magnetic ferrous minerals, and then enters the high gradient magnetic separator to remove limonite, hematite, etc. Weakly magnetic ferrous minerals, then enter the dense medium separation process, the selected density is 2.96g / cm 3 Tetrabromoethane, consumption is 25% of the pr...

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Abstract

The invention relates to a refining process for lepidolite in tantalum-niobium ore waste rocks. A combined method with magnetic separation, high gradient magnetic separation, dense medium separation and flotation is adopted. The flotation adopts the process of rough flotation, dual fine flotations and sweeping. The process for refining the lepidolite from the granite-type tantalum-niobium ore waste rocks is provided. The tantalum-niobium ore waste rocks are crushed, screened, ground and subjected to high-frequency screening, spiral grading, permanent magnet magnetic separation for iron removal, high gradient magnetic separation, dense medium separation and flotation, so that lepidolite concentrates are obtained. By means of the method, the lepidolite concentrates are separated from the tantalum-niobium ore waste rocks. The lepidolite concentrates contain at least 4.5% of Li2O, at least 8.0% of K2O and Na2O and at most 0.10% of TiO2 and Fe2O3, the recovery rate of the lepidolite concentrates is larger than 80%, the qualities of the lepidolite concentrates meet the requirement of national standards, and the recovery rate of the lepidolite concentrates exceeds the industry level.

Description

technical field [0001] The invention belongs to the technical field of solid waste recovery and utilization in the technical field of resources and environment, and in particular relates to a refining process for lepidolite in tantalum-niobium ore waste rock. Background technique [0002] Tantalum-niobium ore waste rocks are the ore body wall rocks, rock inclusions, stripping waste rocks, and lean ore with tantalum-niobium content that cannot reach industrial grades during the mining process of tantalum-niobium ore. Tantalum and niobium tailings contain high levels of lepidolite, potassium feldspar, albite, quartz, kaolinite and a small amount of magnetite, hematite, limonite, pyrite, pyrrhotite, titanium Iron ore, rutile, pyrolusite, lithium muscovite, iron lithium mica and trace amounts of tantalum-niobite, tantalum-containing cassiterite, altered zircon, hydroxysilicate and other minerals. In my country, tantalum-niobium ore is mainly produced in Yichun in Jiangxi, Nanpi...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/012B03C1/025
Inventor 毛若明熊洪刘维良刘属兴毛树林
Owner 江西金辉再生资源股份有限公司
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