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Analyzing method for quickly and precisely measuring tellurium in tellurium smelting process

A smelting process and accurate measurement technology, 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 instability and large error in results, and achieve high accuracy , the effect of good precision

Active Publication Date: 2014-12-24
YUNNAN CHIHONG ZINC & GERMANIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows us to verify how much certain chemicals are found within specific parts or products made from Tellurium crucible (Teledicaceae) during its manufacturing processes by performing tests on them alongside other similar samples with different compositions. By doing this we aimed at reducing purchases needed while also improving efficiency and quality control over Telemarket® branding ceramics produced under controlled conditions.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding a reliable way to analyze telluium sulfuric acid (TeO2) residue recovered through various processes such as smelting or pyrolysis that can be applied on different types of metals like copper, nickle, tin, etc., without affecting their properties during these processing steps.

Method used

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  • Analyzing method for quickly and precisely measuring tellurium in tellurium smelting process
  • Analyzing method for quickly and precisely measuring tellurium in tellurium smelting process
  • Analyzing method for quickly and precisely measuring tellurium in tellurium smelting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh four parts of the standard management sample (the sample contains 20.36% tellurium), with a weight of 0.2000g, accurate to 0.0001g. Put the sample in a 400ml triangular beaker, slowly add 15ml of concentrated hydrochloric acid, 5ml of concentrated nitric acid, heat at low temperature to dissolve until nearly dry, add 5ml of concentrated hydrochloric acid, add 5ml of bromine water, continue heating and evaporate to dryness, repeat evaporation to dryness with concentrated hydrochloric acid twice , 5ml each time. Add 10ml of concentrated sulfuric acid, heat until thick white smoke comes out, add 100ml of ultrapure water and 10ml of concentrated hydrochloric acid after cooling, heat to boil to dissolve salts, and cool to room temperature. Accurately add 50ml of potassium dichromate standard solution, let it stand for at least 30min, add 20ml of sulfuric acid (1+1), 5ml of concentrated phosphoric acid, add 4 drops of sodium diphenylamine sulfonate indicator, titrate wi...

Embodiment 2

[0033] Weigh four parts of the standard management sample (the sample contains 45.86% tellurium), with a weight of 0.2000g, accurate to 0.0001g. Put the sample in a 400ml triangular beaker, slowly add 15ml of concentrated hydrochloric acid, 5ml of concentrated nitric acid, heat at low temperature to dissolve until nearly dry, add 5ml of concentrated hydrochloric acid, add 5ml of bromine water, continue heating and evaporate to dryness, repeat evaporation with hydrochloric acid twice, 5ml each time. Add 10ml of concentrated sulfuric acid, heat until thick white smoke comes out, add 100ml of ultrapure water and 10ml of concentrated hydrochloric acid after cooling, heat to boil to dissolve salts, and cool to room temperature. Accurately add 50ml of potassium dichromate standard solution, let it stand for at least 30min, add 20ml of sulfuric acid (1+1), 5ml of concentrated phosphoric acid, add 4 drops of sodium diphenylamine sulfonate indicator, titrate with ferrous ammonium sulfa...

Embodiment 3

[0038] Weigh four parts of the standard management sample (the sample contains 85.44% tellurium), with a weight of 0.2000g, accurate to 0.0001g. Put the sample in a 400ml triangular beaker, slowly add 15ml of hydrochloric acid, 5ml of nitric acid, heat at low temperature to dissolve until nearly dry, add 5ml of concentrated hydrochloric acid, add 5ml of bromine water, continue heating and evaporate to dryness, repeat evaporation with hydrochloric acid twice, each time 5ml. Add 10ml of concentrated sulfuric acid, heat until thick white smoke comes out, add 100ml of ultrapure water and 10ml of concentrated hydrochloric acid after cooling, heat to boil to dissolve salts, and cool to room temperature. Accurately add 50ml of potassium dichromate standard solution, let it stand for at least 30min, add 20ml of sulfuric acid (1+1), 5ml of concentrated phosphoric acid, add 4 drops of sodium diphenylamine sulfonate indicator, titrate with ferrous ammonium sulfate standard solution until...

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Abstract

The invention discloses an analyzing method for quickly and precisely measuring tellurium in a tellurium smelting process. The measuring range of the tellurium in material is 20-95% of mass percent. The analyzing method for quickly and precisely measuring the tellurium in the tellurium smelting process mainly includes steps that weighing a certain amount of sample, adding a proper amount of hydrochloric acid, nitric acid and sulfuric acid dissolving sample, adding bromine water to shield As and Sb interference, and using ammonium ferrous sulfate to titrate the tellurium content under a proper amount of potassium dichromate and thiophosphate. The analyzing method for quickly and precisely measuring the tellurium in the tellurium smelting process uses standard addition test and parallel test to verify the accuracy and precision of the method; the analyzing method for quickly and precisely measuring the tellurium in the tellurium smelting process is high in precision and capable of meeting the actual needs of the analysis and detection for the tellurium content in the material in the tellurium production process.

Description

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Claims

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Application Information

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Owner YUNNAN CHIHONG ZINC & GERMANIUM
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