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Method for detecting active metal elements in hard zinc

A detection method, a technology of active metals, applied in the field of detection of active metals in hard zinc, can solve problems such as difficult detection of active metals

Inactive Publication Date: 2018-05-08
清远先导材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, it is necessary to ensure that the hard zinc oxide roasting slag is completely oxidized before the chlorination distillation. It is difficult to detect the trace amount of active metals in the roasting slag by using the traditional phase analysis method.

Method used

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  • Method for detecting active metal elements in hard zinc

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Experimental program
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Effect test

Embodiment 1

[0041] Take 150g of hard zinc roasting slag, pass it through a 100-mesh sieve after ball milling, and take 100g of the sieved slag for use; configure 1L of copper sulfate solution with a copper content of about 200ppm for use, and submit it for inspection with a copper content of 203ppm; The slag after sieving was added to 400mL copper sulfate solution, stirred and reacted at 60°C for 1 hour, and the filtered filtrate solution was sent for inspection, and the copper content was 132ppm. Assuming that the active metal was iron, the elemental iron in 100g of slag was calculated to be 24.47mg, the content is 0.02447%.

[0042] The reaction equation is: Fe+Cu 2+ → Fe 2+ +Cu.

Embodiment 2

[0044] Take 150g of hard zinc roasting slag, pass it through a 100-mesh sieve after ball milling, and take 100g of the sieved slag for use; configure 1L of copper sulfate solution with a copper content of about 2000ppm for use, and submit it for inspection with a copper content of 2052ppm; The slag after sieving was added to 400mL copper sulfate solution, stirred and reacted at 80°C for 3 hours, and the filtered filtrate solution was sent for inspection, and the copper content was 1058ppm. Assuming that the active metal was iron, the elemental iron in 100g of slag was calculated to be 397.6mg, the content is 0.3976%.

[0045] The reaction equation is: Fe+Cu 2+ → Fe 2+ +Cu.

Embodiment 3

[0047]Take 150g of hard zinc roasting slag, pass it through a 100-mesh sieve after ball milling, and take 100g of the sieved slag for use; configure 1L of copper sulfate solution with a copper content of about 5000ppm for use, and submit it for inspection. The copper content is 4987ppm; The slag after sieving was added to 600mL copper sulfate solution, stirred and reacted at 60°C for 1 hour, and the filtered filtrate solution was submitted for inspection to obtain a copper content of 2028ppm. Assuming that the active metal was iron, the elemental iron in 100g of slag was calculated to be 1775mg, and the content was 1.775%.

[0048] The reaction equation is: Fe+Cu 2+ → Fe 2+ +Cu.

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Abstract

The invention provides a method for detecting active metal elements in hard zinc. The method comprises the following steps that 1, roasted or oxidized extracted hard zinc slag is subjected to ball milling and sifting through a 50-150 mesh sieve; 2, the sifted hard zinc slag is added to a copper sulfate solution for heating, reaction and filtering to obtain a filtrate and filter slag, wherein the content of copper in the copper sulfate solution is 50-10000 ppm, and the mass ratio of the copper sulfate solution to the sifted hard zinc slag is (3-20): 1; 3, the content of copper in the filtrate is detected to obtain the content of active metals in the hard zinc slag. The method utilizes the reaction of the active metals with copper sulfate to cause the change of the copper content, calculatesthe content of the active metals in the roasted or oxidized hard zinc slag, and can quantitatively detect the content of the active metal elements in the slag; the method can not only quantify, but also can detect slag with the active metal content of 10 ppm, and solves the difficult problem of quantitative detection of trace active metal elements in solid slag.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metallurgy, and in particular relates to a method for detecting active metal elements in hard zinc. Background technique [0002] Hard zinc is a product in the rectification and refining process of crude zinc produced by smelting lead and zinc in a closed blast furnace, and is one of the important raw materials for germanium extraction. The germanium-rich slag obtained by vacuum distillation of hard zinc is hard zinc slag. [0003] The germanium in the hard zinc slag is recovered by the technological process of "immersion-oxidation roasting-chlorination distillation". The hard zinc slag undergoes an oxidation process before entering the chlorination distillation process to oxidize the active metals in it, otherwise the active metals will react with hydrochloric acid to produce hydrogen gas during the chlorination distillation process, and the hydrogen gas will react with the chlorine gas intro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N31/12
CPCG01N5/04G01N31/12
Inventor 殷亮石志林朱刘
Owner 清远先导材料有限公司
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