GB/T 14949.5-2021 English PDFUS$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 14949.5-2021: Manganese ores - Determination of titanium content - Diantipyrylmethane spectrophotometric method Status: Valid GB/T 14949.5: Historical versions
Basic dataStandard ID: GB/T 14949.5-2021 (GB/T14949.5-2021)Description (Translated English): Manganese ores - Determination of titanium content - Diantipyrylmethane spectrophotometric method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: D32 Word Count Estimation: 14,157 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 14949.5-2021: Manganese ores - Determination of titanium content - Diantipyrylmethane spectrophotometric method---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Manganese ores-Determination of titanium content-Diantipyrylmethane spectrophotometric method ICS 73.060.20 CCSD32 National Standards of People's Republic of China Replace GB/T 14949.5-1994 Determination of titanium content in manganese ore Diantipyrylmethane Spectrophotometry (ISO 7723.1984,Manganeseoresandconcentrates-Determinationof Released on 2021-05-21 2021-12-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is part 5 of GB/T 14949.GB/T 14949 has released the following parts. ---Manganese ore chemical analysis method determination of chromium content; ---Determination of nickel content of manganese ore by flame atomic absorption spectrometry; ---Manganese ore chemical analysis method determination of barium oxide content; ---Manganese ore chemical analysis method determination of vanadium content; ---Determination of titanium content in manganese ore Diantipyrylmethane spectrophotometric method; ---Manganese ore chemical analysis method determination of copper, lead and zinc content; ---Manganese ore chemical analysis method sodium and potassium determination; ---Gravimetric method for the determination of wet storage water of manganese ore; ---Manganese ore chemical analysis method determination of sulfur content; ---Manganese ore chemical analysis method determination of cobalt content; ---Determination of carbon content of manganese ore by gravimetric method and infrared absorption method; ---Gravimetric method for determination of combined water content of manganese ore. This document replaces GB/T 14949.5-1994 "Manganese Ore Chemical Analysis Method Determination of Titanium Content", and GB/T 14949.5-1994 In comparison, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Titanium dioxide has been added (see 5.11); b) Metal titanium has been added (see 5.12); c) Deleted the measurement of wet storage water (see 6.1 of the.1994 edition); d) Increase the requirement for the sample to be dried in the oven (see Chapter 7); e) The requirement for the number of measurements has been added (see 8.2); f) Modified the calculation of analysis results (see 9.1, Chapter 7 of.1994 edition), and added the determination and expression of analysis results (see 9.2); g) A common test of precision between laboratories was carried out, and the "allowable difference" was replaced by the statistically obtained repeatability limit r and reproducibility limit R (See Chapter 10, Chapter 8 of the.1994 edition); h) Added test report (see Chapter 11); i) The test result acceptance flow chart has been added (see Appendix C). This document uses the redrafting method to modify and adopt ISO 7723.1984 "Determination of titanium content of manganese ore and manganese concentrate 4.4' diamine pyrrolidone Alkane Spectrophotometry. Compared with ISO 7723.1984, this document has many adjustments in structure. Appendix A lists this standard and ISO 7723.1984. Compared with the chapter number change comparison table. Compared with ISO 7723.1984, this document has technical differences. The set vertical single line (|) is marked, and a list of the corresponding technical differences and their reasons is given in Appendix B. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Iron and Steel Association. This document is under the jurisdiction of the National Pig Iron and Ferroalloy Standardization Technical Committee (SAC/TC318). Drafting organizations of this document. Qingdao Bozheng Inspection Technology Co., Ltd., Qingdao Boxinda Technology Co., Ltd., Qingdao Yuancheng Chuangzhi Technology Co., Ltd. Company, Huangdao Customs Comprehensive Technical Service Center, Qingdao Customs Technical Center, Metallurgical Industry Information Standards Research Institute. The main drafters of this document. Guan Song, Fan Yu, Zhang Qingjian, Zheng Lihong, Shi Xinxing, Zhang Qian, Wang Jing. This document was first published in.1994, and this is the first revision.IntroductionAs there are many elements involved in the detection process of manganese ore, the applicable scope and applicable methods of the elements are different. to ensure that Manganese ore testing standards are convenient and accurate. We have established a national support for manganese ore testing based on the analysis methods for different elements of manganese ore. Home standard system. The GB/T 14949 manganese ore series analysis method is the basic standard for manganese ore testing in my country, and it is planned to be composed of twelve parts. ---GB/T 14949.1.Determination of chromium content in chemical analysis methods of manganese ore. The purpose is to measure the chromium content in manganese ore, using Diphenylcarbazide photometric method and silver persulfate titration method. ---GB/T 14949.2.Determination of nickel content in manganese ores by flame atomic absorption spectrometry. The purpose is to measure nickel in manganese ore Content, using flame atomic absorption spectrometry. ---GB/T 14949.3.Method for chemical analysis of manganese ore. Determination of barium oxide content. The purpose is to measure the barium oxide content in manganese ore The amount is based on the barium sulfate gravimetric method. ---GB/T 14949.4.Method for chemical analysis of manganese ore. Determination of vanadium content. The purpose is to measure the vanadium content in manganese ore, using Phosphotungstovanadic acid photometric method. ---GB/T 14949.5.Determination of titanium content in manganese ore Diantipyrylmethane spectrophotometric method. The purpose is to measure manganese ore The content of titanium in it was determined by the diantipyrylmethane spectrophotometric method. ---GB/T 14949.6.Methods for chemical analysis of manganese ore Determination of copper, lead and zinc content. The purpose is to measure copper and lead in manganese ore And zinc content, using flame atomic absorption spectrometry. ---GB/T 14949.7.Methods for chemical analysis of manganese ore. Determination of sodium and potassium content. The purpose is to measure the sodium and potassium content in manganese ore Quantities, using flame atomic absorption spectrometry. ---GB/T 14949.8.Gravimetric method for the determination of wet storage water in manganese ore. The purpose is to measure the amount of sodium wet storage water in manganese ore, Use the weight method. ---GB/T 14949.9.Determination of sulfur content in chemical analysis methods of manganese ore. The purpose is to measure the sulfur content in manganese ore, using Barium sulfate gravimetric method and combustion iodine titration method. ---GB/T 14949.10.Method for chemical analysis of manganese ore. Determination of cobalt content. The purpose is to measure the cobalt content in manganese ore, using Nitroso R salt photometric method. ---GB/T 14949.11.Determination of carbon content of manganese ore by gravimetric method and infrared absorption method. The purpose is to measure the manganese ore The carbon content is based on the gravimetric method and infrared absorption method. ---GB/T 14949.12.Gravimetric method for determination of combined water content of manganese ore. The purpose is to measure the combined water content of manganese ore The amount, using the weight method. Determination of titanium content in manganese ore Diantipyrylmethane Spectrophotometry Warning---Personnel using this document should have formal laboratory work experience. This document does not indicate all possible safety issues question. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.1 ScopeThis standard specifies the diantipyrylmethane spectrophotometric method for the determination of titanium content. This standard applies to the determination of titanium content in manganese ore, manganese concentrate and sintered manganese ore. Measuring range (mass fraction). 0.01%~0.50%.2 Normative referencesThe contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 2011 Bulk manganese ore sampling and sample preparation method GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) Part 1.General principles and definitions GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) Part 2.Determine the repeatability of standard measurement methods Basic methods with reproducibility GB/T 6682 Analytical laboratory water specifications and test methods GB/T 7729 General Rules of Spectrophotometry for Chemical Analysis of Metallurgical Products GB/T 8170 Numerical rounding rules and the expression and determination of limit values3 Terms and definitionsThere are no terms and definitions that need to be defined in this document.4 PrincipleThe sample is decomposed with hydrochloric acid, nitric acid, and sulfuric acid. Filter the insoluble residue and keep the filtrate as the main liquid. Ashing the residue and filter paper, using hydrofluoric acid and sulfur Acid treatment. It is melted with potassium pyrosulfate, the melt is dissolved in the hydrochloric acid solution, and the resulting solution is combined with the main liquid. The solution is at 1.0mol/L~ In 1.2mol/L hydrochloric acid medium (adjust the pH of the solution to about 1), add diantipyrimethane to form a yellow complex with titanium, Measure the absorbance at the wavelength of 385nm with the photometer, and calculate the titanium content according to the standard curve.5 Reagents and materialsUnless otherwise specified, only use analytical reagents. 5.1 Water, GB/T 6682, Class II. 5.2 Potassium pyrosulfate. 5.3 Hydrochloric acid, ρ=1.19g/mL. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 14949.5-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 14949.5-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 14949.5-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14949.5-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
