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Method for determining copper phase in flash converting furnace slag

A determination method and flash technology, which can be used in chemical analysis, color/spectral property measurement by titration, etc., and can solve the problems of complex determination principle, high price and poor accuracy of X-ray diffraction spectroscopy.

Active Publication Date: 2015-07-08
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The measurement principle of X-ray diffraction spectrometry is relatively complicated, mainly suitable for qualitative and semi-quantitative analysis, the accuracy is poor, and the diffraction pattern needs to be compared and analyzed, and it is difficult to find the corresponding PDF card data for flash blowing slag; microscope analysis The method is mainly used for qualitative analysis. If the corresponding equipment for image processing is required for quantitative analysis, the high-quality microscope and its photo analysis system are expensive; and the existing phase analysis of copper is mainly suitable for flash smelting slag containing more copper sulfide. , the phase analysis of copper in copper smelting converter slag, which contains a lot of matte and cuprous sulfide but little copper and copper oxide, but the phase characteristics of copper in flash converting slag are quite different. Contains little copper sulfide, more elemental copper and copper oxide, and a large amount of magnetic iron, so there is no standard method for phase analysis of copper in flash converting slag

Method used

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  • Method for determining copper phase in flash converting furnace slag
  • Method for determining copper phase in flash converting furnace slag
  • Method for determining copper phase in flash converting furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Weigh 0.2935g of sample powder, add 50mL of absolute ethanol to a 200mL triangular beaker, stir until no mineral sample floats on the liquid surface, then slowly and fully stir the solution with a strip-shaped permanent magnet, then slowly take out the permanent magnet, and use Rinse with plenty of water and wipe off any powder adhering to the permanent magnet. This operation was repeated 3 times.

[0059] Dry the remaining solution in the triangular beaker at low temperature, add 30ml 5% hydroxylamine hydrochloride solution, 50ml 10% ammonium chloride solution, heat and stir in a water bath for 22min, filter, wash the filter residue (1) 3 times with 10% sulfuric acid solution, and the filtrate ( 1) The amount of copper measured by the iodometric method is that the content of copper element in the oxide of copper is 8.55%.

[0060] Cu % = C 1 ( ...

Embodiment 2

[0086] Weigh 0.3056g of sample powder, add 53mL of absolute ethanol to a 200mL triangular beaker, stir until no mineral sample floats on the liquid surface, then slowly and fully stir the solution with a strip-shaped permanent magnet, then slowly take out the permanent magnet, and use Rinse with plenty of water and wipe off any powder adhering to the permanent magnet. This operation was repeated 3 times.

[0087] Dry the remaining solution in the triangular beaker at low temperature, add 30ml 5% hydroxylamine hydrochloride solution, 50ml 10% ammonium chloride solution, heat and stir in a water bath for 24min, filter, wash the filter residue (1) 3 times with 10% sulfuric acid solution, and the filtrate ( 1) Measure the amount of copper with the iodometric method to be 9.38% of the copper element content in the oxide of copper.

[0088] Cu % = C 1 ( ...

Embodiment 3

[0110] Weigh 0.2993g of sample powder, add 51mL of absolute ethanol to a 200mL triangular beaker, stir until there is no mineral sample floating on the liquid surface, then slowly and fully stir the solution with a strip-shaped permanent magnet, then slowly take out the permanent magnet, and use Rinse with plenty of water and wipe off any powder adhering to the permanent magnet. This operation was repeated 3 times.

[0111] Dry the remaining solution in the triangular beaker at low temperature, add 30ml 5% hydroxylamine hydrochloride solution, 50ml 10% ammonium chloride solution, heat and stir in a water bath for 24min, filter, wash the filter residue (1) 3 times with 10% sulfuric acid solution, and the filtrate ( 1) measure the content of copper element in the copper oxide with iodometric method to be 11.17%.

[0112] Cu % = C 1 ( V ...

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Abstract

The invention provides a method for determining a copper phase in a flash converting furnace slag, which comprises the following steps: (A) removing irons in a flash converting furnace slag sample; (B) enabling a solution obtained in the step (A) and hydroxylamine hydrochloride solution to react with ammonium chloride solution, and filtering the obtained object so as to obtain a first filter residue and first filtrate; (C) determining the first filtrate by using an iodometry, so that the content of a copper element in an oxide of copper is obtained, and reacting the first filter residue with a silver-ion-containing solution, and filtering the obtained object so as to obtain a second filter residue and second filtrate; and (D) determining the second filtrate by using the iodometry, so that the content of elemental copper is obtained, and dissolving the second filter residue, and determining the dissolved second filter residue by using an atomic absorption spectrometry, so that the content of a copper element in a sulfide of copper is obtained. According to the method for determining a copper phase in a flash converting furnace slag disclosed by the invention, the separation and determination of the copper phase can be realized through one sample weighting, and the accuracy and precision of determination are good.

Description

technical field [0001] The invention relates to the technical field of phase determination, in particular to a method for determining copper phase in flash blowing slag. Background technique [0002] Flash blowing technology is a smelting process developed in combination with Outokumpu technology in the middle of the 20th century. blowing in a furnace under oxygen-enriched conditions. Flash converting slag is the slag discharged while producing blister copper. It is different from the silicate slag system of traditional PS converter converting. Flash converting slag is mainly alkaline calcium ferrite slag. The slag contains about 10-30% copper, 30-50% iron, 5-15% calcium. [0003] Due to the extremely intense oxidation process in the reaction tower of the flash conversion furnace, the copper sulfide and sulfate in the copper matte powder are mainly oxidized and decomposed into cuprous oxide and simple copper, etc., and the slagging process is completed. The main reaction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N31/16
Inventor 姜泓万双李先和刘君侠刘天一张羽赵九轲孙飚
Owner YANGGU XIANGGUANG COPPER