Method for rapidly measuring contents of major elements aluminum oxide, silicon dioxide and chromium oxide in chromium-containing high alumina refractory materials via ICP-AES
A technology of ICP-AES and aluminum oxide, which is applied in the field of spectral detection, can solve the problems of low detection cost and achieve the effects of reduced detection cost, high measurement accuracy and fast operation
Inactive Publication Date: 2019-07-12
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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Problems solved by technology
At present, there is no method that is quick and easy, low in detection cost, and can simultaneously analyze the main elements of chromium-containing high-alumina refractory materials such as aluminum oxide, silicon dioxide, and chromium oxide.
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Embodiment Construction
[0020] The present invention will be further described in detail below in conjunction with the embodiments.
[0021] The ICP-AES method of the present invention for quickly determining the content of main elements aluminum trioxide, silicon dioxide and chromium trioxide in chromium-containing high-aluminum refractories includes the following steps:
[0022] Equipment used in the experiment: American Thermo Fisher 6500 Duo full-spectrum direct-reading inductively coupled plasma emission spectrometer; American CEM Mars 6 microwave digestion instrument; German Sartorius electronic balance; GT-30 laboratory water purifier.
[0023] Reagents used in the experiment: hydrochloric acid (excellent grade pure); nitric acid (excellent grade pure); sodium hydroxide solution (5%); ultrapure water (homemade); standard stock solutions: Al, Si, and Cr standard stock solutions are all supplied by the state Provided by the Central Iron and Steel Research Institute, the concentration value is 1000 μg / m...
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The invention relates to a method for rapidly measuring contents of major elements aluminum oxide, silicon dioxide and chromium oxide in chromium-containing high alumina refractory materials via an ICP-AES. According to the method, sodium hydroxide solution, hydrochloric acid and nitric acid are adopted as a digestion system to undergo microwave digestion, the digestion solution is diluted, and aninductively coupled plasma-atomic emission spectrometry (ICP-AEC) is utilized to measure the contents of major elements aluminum oxide, silicon dioxide and chromium oxide in a chromium-containing high alumina refractory material. The method is rapid in sample treatment and high in dissolution efficiency; an instrument is adopted to detect the high-content (as high as 95%) major elements and the traditional chemical analysis method is completely replaced so that the results are stable and reliable; the detection cost is relatively low; and the used reagent is safe and environment-friendly, themanual operation is replaced by reasonably using instrument analysis, so that the working efficiency is improved and high popularization and application values are provided.
Description
Technical field [0001] The invention belongs to the field of spectroscopy detection, and specifically relates to a method for determining the content of main elements aluminum oxide, silicon dioxide and chromium oxide in refractory materials. Background technique [0002] The most representative chromium-containing high-aluminum refractories are chromium corundum bricks, which are all silicon-aluminum refractories. Chromium corundum bricks use alumina-chromium oxide as the main raw material, which has the characteristics of high temperature resistance, high pressure, and chemical attack. It has achieved good results in metallurgy, glass, and petrochemical industries. In the application of the iron and steel industry, the service life of chromium-containing corundum materials is more than doubled than that of ordinary corundum materials, such as ladle breathable bricks; in the non-ferrous smelting industry, the wear resistance and corrosion resistance of chromium corundum bricks a...
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IPC IPC(8): G01N1/44G01N1/30G01N21/73
CPCG01N1/30G01N1/44G01N21/73G01N2001/2893
Inventor 严倩琳钱刚许晓红白云赵海峰王建军舒钧
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD