CN114034726A - 一种钢铁企业测定铁精粉中全铁含量的方法 - Google Patents
一种钢铁企业测定铁精粉中全铁含量的方法 Download PDFInfo
- Publication number
- CN114034726A CN114034726A CN202111350572.9A CN202111350572A CN114034726A CN 114034726 A CN114034726 A CN 114034726A CN 202111350572 A CN202111350572 A CN 202111350572A CN 114034726 A CN114034726 A CN 114034726A
- Authority
- CN
- China
- Prior art keywords
- iron
- sample
- powder
- content
- placing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 10
- 239000010959 steel Substances 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 title abstract description 15
- 239000012141 concentrate Substances 0.000 title abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 22
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- IUYLTEAJCNAMJK-UHFFFAOYSA-N cobalt(2+);oxygen(2-) Chemical compound [O-2].[Co+2] IUYLTEAJCNAMJK-UHFFFAOYSA-N 0.000 claims abstract description 5
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(II) oxide Inorganic materials [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims abstract description 5
- UPWOEMHINGJHOB-UHFFFAOYSA-N cobalt(III) oxide Inorganic materials O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 claims abstract description 5
- PSHMSSXLYVAENJ-UHFFFAOYSA-N dilithium;[oxido(oxoboranyloxy)boranyl]oxy-oxoboranyloxyborinate Chemical compound [Li+].[Li+].O=BOB([O-])OB([O-])OB=O PSHMSSXLYVAENJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims abstract description 5
- HZRMTWQRDMYLNW-UHFFFAOYSA-N lithium metaborate Chemical compound [Li+].[O-]B=O HZRMTWQRDMYLNW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001304 sample melting Methods 0.000 claims abstract description 5
- XZXYQEHISUMZAT-UHFFFAOYSA-N 2-[(2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound CC1=CC=C(O)C(CC=2C(=CC=C(C)C=2)O)=C1 XZXYQEHISUMZAT-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229940107816 ammonium iodide Drugs 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000011088 calibration curve Methods 0.000 abstract description 5
- 238000004846 x-ray emission Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract 2
- 238000012360 testing method Methods 0.000 description 5
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- WHBHBVVOGNECLV-OBQKJFGGSA-N 11-deoxycortisol Chemical compound O=C1CC[C@]2(C)[C@H]3CC[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 WHBHBVVOGNECLV-OBQKJFGGSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000013558 reference substance Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/07—Investigating materials by wave or particle radiation secondary emission
- G01N2223/076—X-ray fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
本发明公开了一种钢铁企业测定铁精粉中全铁含量的方法,选择三氧化二钴作为内标物,称取0.6000±0.0002克铁精粉试样、6.0000±0.0002克无水四硼酸锂、偏硼酸锂混合熔剂:质量百分比67:33、0.03克的碘化铵、1.0000±0.0002克Co2O3放入铂黄坩埚,然后将黄铂金坩埚放入1050℃的熔样机中,前静置:120s;摆动时间:900s;后静止:30s,熔融后取出样片。能够解决在铁精粉全铁实际测定过程中,制作出的试样标定曲线效果差,点比较分散的问题,提高了X射线荧光光谱法分析结果的准确性,实现了对铁精粉中全铁含量的快速准确测定。
Description
技术领域
本发明涉及一种钢铁企业测定铁精粉中全铁含量的方法。
背景技术
铁精粉是铁矿石经过破碎、粉磨、磁选、浮选、重选等程序选出的铁含量较高的粉末,是高炉炼铁的主要原料之一,铁精粉全铁含量一般在50%-70%之间,在测定过程易受到基体效应影响,为了提高TFe的分析准确度,使用高温熔样法,并添加Co2O3作为内标元素,减少基体效应的的影响,以实现X-射线荧光光谱法对铁精粉中全铁含量的测定。
目前常规分析方法存在主要问题:1、手工化学法使用重铬酸钾氧化还原滴定法测定铁精粉中全铁,过程繁琐,实验过程长,每个样品单元素全铁测定3-4人配合工作需要检测45分钟。2、手工化学法检测铁精粉中全铁含量所需的药品种类多达5种,其中试验后的废液中含重金属镉元素,存在环保排放问题。3、手工化学法分析时,溶解样品过程中加热化学溶液,可能产生爆、沸、喷溅、有毒有害、挥发性气体,人工操作拿取加热冒烟的器皿易造成烫伤,存在安全风险和影响职工身体健康。4、由于试样量大,职工的劳动强度大。
检索文献:检索发现有《钢铁、矿石等物料中钴的光度法测定》《分析试验室》1983年001期,《X-荧光光谱法快速测定铁精粉中各元素的含量》《中国化工贸易》2018年021期,《XRF玻璃融片法测定铁精粉中主次量元素》《科学技术与工程》2016年018期等期刊,通过对比,本发明与此类论文、发明有着很大的不同,本发明着重从钢铁企业大宗原料进厂铁精粉中全铁测定化学分析角度,发明一种缩短化学分析时间,消除重金属镉化学污染,降低职工劳动强度,杜绝廉洁风险的铁精粉中全铁光谱分析仪器自动分析方法。
发明内容:
本发明的目的在于提供一种钢铁企业测定铁精粉中全铁含量的方法,能够解决在铁精粉全铁实际测定过程中,制作出的试样标定曲线效果差,点比较分散的问题,提高了X射线荧光光谱法分析结果的准确性,实现了对铁精粉中全铁含量的快速准确测定。
本发明采用的技术方案是,一种钢铁企业测定铁精粉中全铁含量的方法,选择三氧化二钴作为内标物,称取0.6000±0.0002克铁精粉试样、6.0000±0.0002克无水四硼酸锂、偏硼酸锂混合熔剂:质量百分比67:33、0.03克的碘化铵、1.0000±0.0002克Co2O3放入铂黄坩埚,然后将黄铂金坩埚放入1050℃的熔样机中,前静置:120s;摆动时间:900s;后静止:30s,熔融后取出样片。
发明的效果:1、利用企业现有的自动化设备X-荧光仪,开发方法测定铁精粉类完成一个试样30分钟/1人。可满足企业生产的时效性,降低冶炼成本约100万元。2、实现由3-4人配合工作减少至1-2人操作,化学湿法分析岗位优化人员2人,节约成本20万元。3、不使用强氧化剂重铬酸钾,彻底消除了试验后的废液中含镉重金属元素环保排放问题;年节约成本5万元。4、减轻劳动强度,改善工作环境,降低安全风险,提升工作效率。本发明适用于同类型钢铁企业,准确度满足国家标准要求。此方法适用于不同含量分布铁精粉全铁含量的日常分析。
具体实施方式
一种钢铁企业测定铁精粉中全铁含量的方法,
1、内标元素的选择实验:本发明在对内标元素选择中利用试样内标强度和分析线比或分析线与靶线相干散射线的强度比等数据,计算得出元素浓度、函数的浓度,以此来得到补偿吸收增强效应和仪器漂移的效果。其原理如下:在样品中混入一定量的已知物质S(内标物质Co2O3),测定已知物质和被测物相J相(铁精粉中全铁含量)的衍射强度,以其强度比作图,可得样品的平均质量吸收系数的变化值。在x克样品中加入y克内标样(已知),那么混合样品中的内标物质和被检相(即J相)的质量分数分别为 y/(x+y)和 xwj/(x+y),wj J相质量分数。若以Ij和Is分别表示J相和内标物质S的射线强度,代入式得:
上式中,Kjs=K j/Ks,若 x/y为常数,即得出:
上式中,K1= Kjs.*x/y,该式表明,在待测样品中加入一定比例的内标物质时,被测相的浓度wj与射线强度比Ij/Is呈线性关系,与待测样品的平均线吸收系数(u-p)无关。若以这种方法作出定标曲线,则在被测样品中每次以一定的比例加入标样,以此法计算两射线的强度比,作出一系列对应的检量线,就可以进行定量计算。
根据分析线和内标线波长相近、性质相似以及内标元素在样品和标样中基本不存在原则,铁精粉熔融试验中,选取不同化合价、形态的含有内标元素的基准物质作内标物,进行对比试验,通过对检测结果及内标元素强度分析,以三氧化二钴作为内标物制作出的曲线,相关系数为1.0000,仪器精确度为0.2227,曲线C值为0.78,曲线接近原点,以纯钴粉作为内标物制作出的曲线,相关系数为0.9999,仪器精确度为0.90,曲线C值为20.24,曲线偏离原点。本发明最终选择以三氧化二钴作为内标物。
2、本发明铁精粉熔融方法如下:
称取0.6000±0.0002克铁精粉试样、6.0000±0.0002克无水四硼酸锂、偏硼酸锂混合熔剂(质量百分比:67-33)、0.03克的碘化铵、1.0000±0.0002克Co2O3放入铂黄坩埚,然后将黄铂金坩埚放入1050℃的熔样机(前静置:120s;摆动时间:900s;后静止:30s)中熔融后取出样片。
样片最后使用X荧光光谱仪进行分析,通过大量试验,经过荧光值与化学分析值进行比对看出:本发明方法误差值均小于国标规定的0.4%,准确度满足国家标准GB/T223.7-2002要求。此方法适用于不同含量分布铁精粉中全铁含量的日常快速分析。
本发明以无水四硼酸锂、偏硼酸锂混合溶剂(质量百分比67:33)为熔剂,以Co2O3作为内标元素,建立熔融制样,最后使用X射线荧光光谱法测定铁精粉全铁含量的方法。
Claims (1)
1.一种钢铁企业测定铁精粉中全铁含量的方法,其特征在于:选择三氧化二钴作为内标物,称取0.6000±0.0002克铁精粉试样、6.0000±0.0002克无水四硼酸锂、偏硼酸锂混合熔剂:质量百分比67:33、0.03克的碘化铵、1.0000±0.0002克Co2O3放入铂黄坩埚,然后将黄铂金坩埚放入1050℃的熔样机中,前静置:120s;摆动时间:900s;后静止:30s,熔融后取出样片。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111350572.9A CN114034726A (zh) | 2021-11-15 | 2021-11-15 | 一种钢铁企业测定铁精粉中全铁含量的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111350572.9A CN114034726A (zh) | 2021-11-15 | 2021-11-15 | 一种钢铁企业测定铁精粉中全铁含量的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114034726A true CN114034726A (zh) | 2022-02-11 |
Family
ID=80137696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111350572.9A Pending CN114034726A (zh) | 2021-11-15 | 2021-11-15 | 一种钢铁企业测定铁精粉中全铁含量的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114034726A (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101526488A (zh) * | 2008-03-03 | 2009-09-09 | 湖南华菱湘潭钢铁有限公司 | 一种x射线荧光光谱分析铁矿石成分的方法 |
CN103529067A (zh) * | 2013-10-29 | 2014-01-22 | 吉林建龙钢铁有限责任公司 | X荧光光谱法测定铁矿石的检测试剂及方法 |
CN109142412A (zh) * | 2018-10-08 | 2019-01-04 | 山东钢铁股份有限公司 | 一种高炉干法除尘灰中锌、铁、钛含量的x荧光测定方法 |
CN111593198A (zh) * | 2019-02-20 | 2020-08-28 | 新疆八一钢铁股份有限公司 | 一种炼铁高炉用酸性烧结矿的生产方法 |
-
2021
- 2021-11-15 CN CN202111350572.9A patent/CN114034726A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101526488A (zh) * | 2008-03-03 | 2009-09-09 | 湖南华菱湘潭钢铁有限公司 | 一种x射线荧光光谱分析铁矿石成分的方法 |
CN103529067A (zh) * | 2013-10-29 | 2014-01-22 | 吉林建龙钢铁有限责任公司 | X荧光光谱法测定铁矿石的检测试剂及方法 |
CN109142412A (zh) * | 2018-10-08 | 2019-01-04 | 山东钢铁股份有限公司 | 一种高炉干法除尘灰中锌、铁、钛含量的x荧光测定方法 |
CN111593198A (zh) * | 2019-02-20 | 2020-08-28 | 新疆八一钢铁股份有限公司 | 一种炼铁高炉用酸性烧结矿的生产方法 |
Non-Patent Citations (2)
Title |
---|
李国: "扫描道代替固定道作内标通道分析铁矿石——X射线荧光光谱分析", 《理化检验(化学分册)》, vol. 50, no. 4, 18 April 2014 (2014-04-18), pages 503 - 504 * |
闫丽;焦丽;阚秀艳;王明利;杜士毅;: "X-射线荧光光谱仪分析铁矿石中TFe成分", 《中国检验检测》, no. 03, 26 May 2017 (2017-05-26), pages 15 - 18 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Gazulla et al. | Methodology for the determination of minor and trace elements in petroleum cokes by wavelength‐dispersive X‐ray fluorescence (WD‐XRF) | |
CN104730098B (zh) | 一种高炉铁料中高含量有害元素的快速分析方法 | |
CN107561061A (zh) | 一种铁矿中钾钠铅锌含量的测定方法 | |
CN108776130A (zh) | 一种快速测定钨钼铋锡多金属矿中锡含量方法 | |
CN106370684A (zh) | 一种测定烟花爆竹用钛粉中钛含量的方法 | |
Sk et al. | A Comprehensive Investigation alongwith the Statistical Evaluation for the Characterization of Ilmenite Mineral by X‐ray Fluorescence Spectrometry and Optical Emission Spectrometry | |
CN101825588B (zh) | 采用X射线荧光光谱熔融法测定铁矿石中As、Sn元素含量的方法 | |
CN108508050A (zh) | X射线荧光光谱法测定钢渣中镧、铈和钡含量的方法 | |
Singh | A rugged, precise and accurate new gravimetry method for the determination of gold: an alternative to fire assay method | |
CN109975384A (zh) | 一种检测岩石中金属分布率的方法 | |
Suarez-Fernandez et al. | Analysis of major, minor and trace elements in coal by radioisotope X-ray fluorescence spectrometry | |
CN114034726A (zh) | 一种钢铁企业测定铁精粉中全铁含量的方法 | |
Standen | Qualitative spectrographic analysis | |
Luo et al. | Determination of Pb, As, Cd and trace elements in polluted soils near a lead–zinc mine using polarized X‐ray fluorescence spectrometry and the characteristics of the elemental distribution in the area | |
CN106404817A (zh) | 一种测定烟花爆竹用烟火药剂中钛含量的方法 | |
CN110389146B (zh) | 一种x荧光钴内标-icp钴补偿检测铁料中全铁含量的方法 | |
CN112129744B (zh) | 一种矿石中锂的化学物相分析方法 | |
Subramanian et al. | A rapid hydride-evolution electrothermal atomic-absorption method for the determination of tin in geological materials | |
Houk et al. | Determination of Iron, Chromium, and Nickel by Fluorescent X-Ray Analysis. Aqueous Solution Method | |
CN108037148A (zh) | X射线荧光光谱法测定铜冶炼炉渣多元素标准样品的研制 | |
CN103353453A (zh) | 一种pdp蓝色荧光粉化学组分的icp-aes测试方法 | |
Li et al. | L‐cysteine enhanced hydride generation for atomic fluorescence spectrometric determination of germanium in geological samples | |
LU504019B1 (en) | Method for determining contents of major elements, trace elements and rare earth elements in cobalt-rich crusts and polymetallic nodules | |
PIN-SPL-UML-PC | Microwave oven digestion of power plant emissions and ICP-MS determination of trace elements | |
CN106404815A (zh) | 一种测定烟花爆竹用碳酸锶中锶含量的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |