Method for measuring content of copper, tellurium, gold and silver in copper telluride

A method of determination, technology of copper telluride, used in measuring devices, chemical analysis by titration, instruments, etc.

Active Publication Date: 2015-07-22
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The existing determination methods of copper in copper concentrate, tellurium in copper anode slime, tellurium in pure tellurium and gold and silver in copper concentrate have been relatively mature, while copper te

Method used

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  • Method for measuring content of copper, tellurium, gold and silver in copper telluride
  • Method for measuring content of copper, tellurium, gold and silver in copper telluride
  • Method for measuring content of copper, tellurium, gold and silver in copper telluride

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0080] Example 1

[0081] Weigh 5.034g(m 0 ) Put the sample in a 500mL tall beaker, add a small amount of water, soak the sample, boil it for a while, remove it and cool it a little, add 15mL sulfuric acid (analytical grade), cover the watch glass, place it on the hot plate and heat to dissolve it. The solution is steamed until it emits thick white smoke, take it down and cool to room temperature, rinse the surface and the salt on the wall of the cup with water, add water to the beaker to 300mL, 10mL NaCl solution (20g / L), a small amount of filter paper pulp, stir evenly, and place Boil on a hot plate for 5 minutes, remove it and cool it slightly, and filter with medium-speed filter paper. Transfer all the precipitate to the filter paper, wash the precipitate with hot water until it is blue, and keep the filtrate (1). Put the glass-wiping rod and the filter paper on the wall of the cup together with the filter paper pulp loaded with the precipitate (1) in a clay crucible, put it...

Example Embodiment

[0117] Example 2

[0118] The weight of the sample weighed in this example is 4.9969g. The gold, silver, copper, and tellurium elements are determined according to the measurement procedure of Example 1. The measurement results and calculation process are as follows, which are obtained according to the following process: The content of gold is 23.2g / t, the content of silver is 3918g / t, the content of copper is 42.33%, and the content of tellurium is 26.62%.

[0119] Au ( g / t ) = m 4 - m 2 m 0 ;

[0120] Ag ( g / t ) = m 3 - m 4 - ( m 1 - m 2 ) m 0 ;

[0121] m 0 =4.9969, sample size, g;

[0122] m 1 = 80.5, the mass of the gold and silver particles in the lead oxide used, ug;

[0123] m 2 =0.5, the mass of gold particles in the lead oxide used, ug;

[0124] m 3 =19775.9, the quality of the gold and silver particles in the tested sample, ug;

[0125] m 4 =116.3, the quality o...

Example Embodiment

[0141] Example 3

[0142] The weight of the sample weighed in this example is 5.0012g, and the determination of gold, silver, copper and tellurium are carried out according to the measurement procedure of Example 1. The measurement results and calculation process are as follows, and the gold content is obtained as follows: 30.5g / t, silver content is 4438g / t, copper content is 44.69%, and tellurium content is 29.27%.

[0143] Au ( g / t ) = m 4 - m 2 m 0 , Ag ( g / t ) = m 3 - m 4 - ( m 1 - m 2 ) m 0 ;

[0144] m 0 =5.0012, sample size, g;

[0145] m 1 = 80.5, the mass of the gold and silver particles in the lead oxide used, ug;

[0146] m 2 =0.5, the mass of gold particles in the lead oxide used, ug;

[0147] m 3 =22428.2, the quality of the gold and silver particles in the tested sample, ug;

[0148] m 4 =153.1, the quality of gold particles in the tested sample, ug;

[0149] ...

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Abstract

The invention provides a method for measuring the content of copper, tellurium, gold and silver in copper telluride. The method comprises the following steps: reacting a copper telluride sample and an acidic solution with a chlorine-ion-containing solution, and obtaining precipitates and a first reaction solution; performing incineration treatment on the precipitates, and obtaining incinerated residues; measuring the incinerated residues with a fire-assaying gravimetric method, and obtaining the content of gold and silver in copper telluride; reacting the first reaction solution with an alkali solution, and obtaining copper hydroxide precipitates and a second reaction solution; measuring the copper hydroxide precipitates with an iodometric method, and obtaining the content of copper in copper telluride; enabling the second reaction solution to form tellurium precipitates, measuring the tellurium precipitates with a gravimetric method, and obtaining the content of tellurium in copper telluride. The method can realize continuous separation and measurement of gold, silver, copper and tellurium in the copper telluride sample through one-time sample weighing in a process for measuring the content of copper, tellurium, gold and silver in copper telluride, so that the measurement process is simplified and the accuracy is relatively high.

Description

technical field [0001] The invention relates to the technical field of element determination, in particular to a method for determining the contents of copper, tellurium, gold and silver in copper telluride. Background technique [0002] Tellurium is a rare element, which is a silver-white crystal of orthorhombic system. High-purity tellurium is widely used as an additive in semiconductor devices, alloys, chemical raw materials, cast iron, rubber, glass and other industries due to its advantages of increasing material strength, hardness, and improving material wear and corrosion resistance. However, there are very few independent deposits of tellurium at present, which are mainly associated with the electrolytic anode slime produced in the hydrometallurgy process of non-ferrous metals such as copper, lead and zinc. [0003] Since the electrode potential of tellurium is higher than that of copper, tellurium will not be precipitated at the cathode but mainly deposited in the ...

Claims

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Application Information

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IPC IPC(8): G01N5/00G01N31/16
Inventor 姜泓李先和万双张晓天武守忠周宏鼎刘君侠沈丽
Owner YANGGU XIANGGUANG COPPER
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