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Method for continuously and rapidly determining conventional elements and microelements in niobium and tantalum concentrates

A technology for rapid determination of trace elements, applied in the preparation of test samples, thermal excitation analysis, material excitation analysis, etc., can solve the problems of long analysis and test cycle, large amount of chemical reagents, cumbersome process, etc., and is conducive to technology promotion. and application, the effect of reducing sample pretreatment time and saving dosage

Inactive Publication Date: 2016-06-22
王君玉 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to meet the needs of simultaneous determination of conventional and trace elements in concentrates, these methods have certain limitations: the analysis of different samples and different elements requires different pretreatment methods, the process is cumbersome, and the amount of chemical reagents is large. The cost is high, the use of some toxic and harmful reagents is unavoidable, and different elements and different instruments require different test methods, the analysis and test cycle is long, and the efficiency is low.

Method used

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  • Method for continuously and rapidly determining conventional elements and microelements in niobium and tantalum concentrates
  • Method for continuously and rapidly determining conventional elements and microelements in niobium and tantalum concentrates
  • Method for continuously and rapidly determining conventional elements and microelements in niobium and tantalum concentrates

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Source of samples for this experiment: 3 samples of niobium-tantalum ore concentrate in Yichun, Jiangxi. Analysis lot number: 2015Z123.

[0037] Other materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0038] experiment method:

[0039] Step 1 Accurately weigh 0.5000g sample into a 30mL graphite crucible, add 4gNaOH and 1.5gNa 2 o 2 Melt in a muffle furnace heated to 580°C for 20 minutes, and make sample blanks and management samples at the same time;

[0040] Step 2 Take it out and cool it slightly, put it into a 200mL plastic beaker with a cover, add 80-90mL of 150g / L NaCl solution, boil it on a heating plate for 3-5min, and wash out the crucible;

[0041] Step 3 Filter with medium-speed qualitative filter paper or fast centrifuge, transfer the filtrate into a 100mL volumetric flask, dilute to volume with 1% NaOH, and shake well;

[0042] Step 4 Take 5mL of clear liquid and transfer it into ...

Embodiment 2

[0059] The source of the sample for this experiment: a sample of ferroniobium concentrate from Pingell, Bauchi State, Nigeria. Analysis batch number: 2015Z021.

[0060] Other materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0061] experiment method:

[0062] Step 1 Accurately weigh 0.5000g sample into a 30mL graphite crucible, add 3gNaOH and 1gNa 2 o 2 Melt in a muffle furnace heated to 700°C for 20 minutes, and make sample blanks and management samples at the same time;

[0063] Step 2 Take it out and cool it slightly, put it into a 200mL plastic beaker with a cover, add 80-90mL of 150g / L NaCl solution, boil it on a heating plate for 3-5min, and wash out the crucible;

[0064] Step 3 Filter with medium-speed qualitative filter paper or fast centrifuge, transfer the filtrate into a 100mL volumetric flask, dilute to volume with 1% NaOH, and shake well;

[0065] Step 4 Take 5mL of clear liquid, dilut...

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Abstract

The invention discloses a method for continuously and rapidly determining conventional elements and microelements in niobium and tantalum concentrates. The method comprises the following steps: fusing a sample by utilizing NaOH and Na2O2; after washing the sample with a NaCl solution, separating; taking sediment and a raw solution to determine respectively; finally, determining macro-elements by adopting a plasma spectral method, and analyzing and determining by adopting a method for determining the microelements through a plasma mass-spectrometric method. The method is simple and rapid, can be used for continuously determining 54 types of elements in one step, and has the advantages of accuracy in detection and low detection limit.

Description

technical field [0001] The invention belongs to the technical field of chemical determination, and relates to a method for continuously and rapidly determining conventional and trace elements in niobium-tantalum concentrates, specifically a method for determining silicon (Si), aluminum (Al), Potassium (K), Magnesium (Mg), Phosphorus (P), Iron (Fe), Titanium (Ti), Manganese (Mn), Copper (Cu), Boron (B), Zinc (Zn), Cobalt (Co), Nickel (Ni), Cadmium (Cd), Chromium (Cr), Lithium (Li), Beryllium (Be), Tungsten (W), Molybdenum (Mo), Vanadium (V), Niobium (Nb), Tantalum (Ta), Tin (Sn), Uranium (U), Thorium (Th), Zirconium (Zr), Hafnium (Hf), Thallium (Tl), Antimony (Sb), Bismuth (Bi), Rubidium (Rb), Cesium (Cs), Gallium (Ga), Germanium (Ge), Indium (In), Rhenium (Re), Selenium (Se), Tellurium (Te), Scandium (Sc), Yttrium (Y), Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Er...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N1/28
CPCG01N1/28G01N21/73
Inventor 王君玉王烨崔江利曹立峰陈静刘军王盈仲伟路王敏捷
Owner 王君玉
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