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Method for rapidly determining content of titanium dioxide in ilmenite

A rapid determination technology of titanium dioxide, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve problems such as high energy consumption, introduction of the environment, and cumbersome methods, and achieve detection The effect of fast speed, time-consuming solution and short analysis time

Inactive Publication Date: 2020-06-02
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alkali fusion method needs to melt the sample in a high temperature environment for a long time. The method is cumbersome, consumes high energy, and has low efficiency. It is not suitable for the needs of industrial batch analysis.
Liu Guanlong proposed in "Rapid Determination of Ferro-Titanium Content in Ilmenite by Potassium Dichromate Titration" ("Metallurgical Analysis" 2012 No. 3)) that acid-dissolved ilmenite can be used to determine titanium and iron in ilmenite, which greatly improves the The efficiency of the analysis is improved, but the end point of the titration method with potassium dichromate solution is not obvious and the heavy metal chromium is introduced into the environment to cause harm to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, a kind of method for quickly measuring titanium dioxide content in ilmenite:

[0036] Weigh 0.1000g of ilmenite standard sample (ZBK456), put it in a 250mL conical flask, add a small amount of water to moisten it, add 2.5mL of nitric acid and 20mL of phosphoric acid dropwise, heat it on an electric furnace, and shake the conical flask constantly to ensure complete dissolution until the liquid level is calm and the solution is colorless and transparent, then remove and cool for 5 minutes. The cooled solution becomes viscous. Add 15mL of concentrated hydrochloric acid and 5mL of sulfuric acid solution into the Erlenmeyer flask. After shaking evenly, add water to 100mL. Add 2g of aluminum foil in batches. After bubbling, cover with saturated sodium bicarbonate Geiger funnel for solution. After the reaction is stable, put it on the electric furnace and boil it until big bubbles appear, then take it off, add 1mL of neutral red indicator dropwise after cooling,...

Embodiment 2

[0037] Embodiment 2, a kind of method for quickly measuring titanium dioxide content in ilmenite,

[0038] Weigh 0.1000g of ilmenite standard sample (ZBK454), put it in a 250mL conical flask, add a small amount of water to moisten it, add 2.0mL of nitric acid and 15mL of phosphoric acid dropwise, heat it on an electric furnace, and shake the conical flask constantly to ensure complete dissolution until the liquid level is calm and the solution is colorless and transparent, then remove and cool for 5 minutes. The cooled solution becomes viscous, add 20mL of concentrated hydrochloric acid and 6mL of sulfuric acid solution into the Erlenmeyer flask, shake evenly, add water to 100mL, add 2g of aluminum foil in batches, cover with saturated sodium bicarbonate after bubbling Geiger funnel for solution. After the reaction is stable, put it on the electric furnace and boil it until big bubbles appear, then take it off, add 1mL of neutral red indicator dropwise after cooling, and titr...

Embodiment 3

[0039] Embodiment 3, a kind of method for quickly measuring titanium dioxide content in ilmenite,

[0040] Weigh 0.1000g of ilmenite concentrate sample, put it in a 250mL conical flask, add a small amount of water to moisten it, add 2.0mL of nitric acid and 20mL of phosphoric acid dropwise, heat it on an electric furnace, and shake the conical flask continuously to ensure complete dissolution until When the liquid level is calm, the solution becomes colorless and transparent, and then it is removed and cooled for 5 minutes. After cooling, the solution becomes viscous. Add 15mL of concentrated hydrochloric acid and 8mL of sulfuric acid solution into the Erlenmeyer flask. After shaking evenly, add water to 100mL, add 2g of aluminum foil in batches, cover with saturated sodium bicarbonate solution after bubbling Geiger's funnel. After the reaction is stable, put it on the electric furnace and boil it until big bubbles appear, then take it off, add 1mL of neutral red indicator dr...

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Abstract

The invention discloses a method for determining the content of titanium dioxide in ilmenite. The method comprises the following steps: adding mixed acid composed of concentrated nitric acid and concentrated phosphoric acid into an ilmenite sample to decompose an ore sample; adding mixed acid composed of concentrated hydrochloric acid and sulfuric acid for redissolution; adding an aluminum foil for reduction, dropwisely adding an indicator, and carrying out titrating with an ammonium ferric sulfate standard solution. The method for determining titanium dioxide in ilmenite has the advantages ofshort time consumption, high accuracy and good reproducibility, and can better meet the requirements of industrial analysis.

Description

technical field [0001] The invention relates to the field of chemical mineral analysis, in particular to a method for detecting titanium dioxide content in ilmenite. Background technique] [0002] Ilmenite is the main mineral for extracting titanium and titanium dioxide and producing titanium dioxide. The determination of titanium dioxide content in ilmenite is especially important for the selection and flow of ilmenite beneficiation process. At present, the determination of titanium dioxide content in ilmenite includes volumetric method, colorimetric method, inductively coupled plasma spectrometry and X-ray fluorescence spectrometry. [0003] The colorimetric method generally adopts diantipyrine methane colorimetric method and hydrogen peroxide colorimetric method, which are suitable for the analysis of low-content ilmenite samples. Inductively coupled plasma spectrometry and X-ray fluorescence spectrometry require large-scale instruments, which are expensive and are not ...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 徐会会单连勇郭凤云张晓梅张素芳岳秋
Owner BLUESTAR LEHIGH ENG INST CO LTD
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