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Method for preparing lithium-contained potassium sodium feldspar powder in tantalum-niobium ore waste rocks

A technology of tantalum niobium ore and feldspar powder, which is applied in the field of preparation of potassium albite powder, can solve the problems of few research reports on the principle and process of potassium albite powder.

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

There are very few research reports on the principle and process of separating high-grade lithium-containing potassium albite powder from tantalum-niobium ore waste rocks using a combined process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The ground pump weighs 10 tons of waste rock from Yichun niobium-tantalum mine (also known as 414 mine), and its chemical composition is as follows (wt%): SiO 2 74.06, Al 2 o 3 15.60,K 2 O, 3.87, Na 2 O4.18, CaO0.14, MgO0.07, Fe 2 o 3 0.988,TiO 2 0.013, Li 2 O1.0646, Ta 2 o 5 0.0093, Nb 2 o 50.0051. After 20 tons of tantalum-niobium ore waste rocks are roughly crushed, medium crushed, and finely crushed by the jaw crusher, they are ball milled in a ball mill for 20 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 hydrocyclone separation process, and finally pass the magnetic fluid separation, the magnetic fluid Mn(NO 3 ) 2 Th...

Embodiment 2

[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 73.46, Al 2 o 3 14.84,K 2 O, 4.50, Na 2 O4.76, CaO0.10, MgO0.08, Fe 2 o 3 1.15, TiO 2 0.015, Li 2 O1.08, Ta 2 o 5 0.0098, Nb 2 o 5 0.0052. 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 20 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 hydrocyclone separation process, and finally pass the magnetic fluid separation, the magnetic fluid Mn(NO 3 ) 2 T...

Embodiment 3

[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 76.11, Al 2 o 3 13.65,K 2 O, 3.72, Na 2 O4.58, CaO0.04, MgO0.04, Fe 2 o 3 1.02, TiO 2 0.01, Li 2 O0.82, Ta 2 o 5 0.0095, Nb 2 o 5 0.0055. 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 20 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 hydrocyclone separation process, and finally pass the magnetic fluid separation, the magnetic fluid Mn(NO 3 ) 2 Th...

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Abstract

The invention relates to a method for preparing lithium-contained potassium sodium feldspar powder in tantalum-niobium ore waste rocks. A combined process with magnetic separation, high gradient magnetic separation, hydraulic cyclone and magnetic fluid separation is adopted. 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, hydraulic cyclone and magnetic fluid separation, so that potassium sodium feldspar concentrates containing a certain amount of lithium are obtained. By means of the method, the lithium-contained potassium sodium feldspar concentrates with a high content of potassium oxide and sodium oxide, a trace content of lithium oxide and a low content of iron oxide, titanium oxide and manganese oxide are separated from the tantalum-niobium ore waste rocks. According to the lithium feldspar concentrates, Li2O accounts for 0.8-1.2%; the K2O and the Na2O altogether account for 7.5-9.0%; the TiO2 and the Fe2O3 altogether account for 0.1% or less; the SiO2 accounts for 66.0-71.0%; the Al2O3 accounts for 15.0-17.0%; the MnO2 accounts for 0.1% or less; the recovery rate of the lithium-contained potassium sodium feldspar concentrates is larger than 95%, and the qualities of the lithium-contained potassium sodium feldspar concentrates meet the requirement of industry standards.

Description

technical field [0001] The invention belongs to the solid waste recycling technology in the technical field of resources and environment, and in particular relates to a preparation method of lithium-containing potassium albite feldspar powder 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 Yichu...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/14
Inventor 毛若明熊洪刘属兴毛树林陈俊
Owner 江西金辉再生资源股份有限公司
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