GB/T 3286.8-2014 PDF EnglishUS$160.00 · In stock · Download in 9 seconds
GB/T 3286.8-2014: Method for chemical analysis of limestone and dolomite - Part 8: The determination of loss on ignition - The gravimetric method Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 3286.8: Historical versions
Similar standardsGB/T 3286.8-2014: Method for chemical analysis of limestone and dolomite - Part 8: The determination of loss on ignition - The gravimetric method---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3286.8-2014 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 73.080 D 52 Replacing GB/T 3286.8-1998 Method for chemical analysis of limestone and dolomite - Part 8.The determination of loss on ignition - The gravimetric method Issued on. JUNE 09, 2014 Implemented on. JANUARY 01, 2015 Issued by. General Administration of Quality Supervision Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Principles... 5 4 Instruments... 6 5 Sample preparation... 6 6 Analytical procedures... 6 7 Calculation and expression of analytical results... 7 8 Precision... 8 9 Test report... 9 Appendix A (Normative) The flow chart of acceptance procedure for sample analysis result... 10 Appendix B (Informative) Precision test function relations and raw data... 11ForewordGB/T 3286 "Method for chemical analysis of limestone and dolomite" is divided into nine parts. - Part 1.The determination of calcium oxide and magnesium oxide content - The complexometric titration method and the flame atomic absorption spectrometric method; - Part 2.The determination of silicon dioxide content - The silicomolybdic blue spectrophotometric method and the perchloric acid dehydration gravimetric method - Part 3.The determination of aluminum oxide content - The chrome azurol S spectrophotometric method and the complexometric titration method - Part 4.The determination of iron oxide content - The o-phenanthroline spectrophotometric method and the flame atomic absorption spectrometric method; - Part 5.The determination of manganese oxide content - The periodate oxidation spectrophotometric method - Part 6.The determination of phosphorus content - The phosphomolybdate blue spectrophotometric method - Part 7.The determination of sulfur content - The pipe furnace combustion iodic acid potassium titration method, the high frequency combustion with infrared absorption method and the barium sulfate gravimetric method - Part 8.The determination of loss on ignition - The gravimetric method - Part 9.The determination of carbon dioxide content - The caustic asbestos absorption gravimetric method This part is Part 8 of GB/T 3286. This part was drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 3286.8-1998 "Chemical analysis of limestone and dolomite - The molybdenum blue photometric method for determination of phosphorus". Compared with GB/T 3286.8-1998, the main technical changes in this part are as follows. - CHANGE the standard name to "Method for chemical analysis of limestone and dolomite - Part 8.The determination of loss on ignition - The gravimetric method"; - In the normative references, CANCEL the reference standard year number, and ADD some references; - CONDUCT a common test of precision between laboratories; USE the repeatability limit r and the reproducibility limit R obtained by statistics to replace the “allowable difference”; - MODIFY some textual expressions. This part was proposed by the China Iron and Steel Association. This part shall be under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC 183). Drafting organizations of this part. Wuhan Iron and Steel (Group) Company, Metallurgical Industry Information Standards Research Institute. The main drafters of this part. Wen Xiangdong, Shao Mei, Chen Shihua, Zhou Zheng, Zhang Suizhong, Cao Hongyan, Yu Weihua, Qiu Jinhui, Gao Jianping, Wang Jiangwei. This standard replaces the standard previously issued as follows. - GB/T 3286.8-1982, GB/T 3286.10-1988, GB/T 3286.8-1998. Method for chemical analysis of limestone and dolomite - Part 8.The determination of loss on ignition - The gravimetric method Warning. The personnel using this part shall have formal laboratory work experience. This part does not point out all possible security issues. 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 part of GB/T 3286 specifies the gravimetric method to determine the loss on ignition. This part applies to the determination of loss on ignition in limestone and dolomite; it also applies to the determination of loss on ignition in metallurgical lime.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 2007.2 General rules for the sampling and sample preparation of minerals in bulk. Sample preparation by manual method GB/T 6379.2 Accuracy (trueness and precision) of measurement methods and results - Part 2.Basic method for the determination of repeatability and reproducibility of a standard measurement method3 PrinciplesThe sample is placed in a platinum crucible; the temperature is gradually increased to 1050 °C ± 50 °C in a high temperature furnace to burn it to a constant mass. The reduced mass is the loss on ignition.4 InstrumentsIn the analysis, only the usual laboratory instruments and equipment are used.5 Sample preparation5.1 Prepare specimen according to GB/T 2007.2. 5.2 The specimen shall be processed to a particle size less than 0.125 mm.6 Analytical procedures6.1 Number of determinations For the same specimen (5.3 or 5.4), make at least 2 independent determinations. 6.2 Sample mass Weigh 1.00 g of sample, accurate to 0.0001 g. For metallurgical lime, the sample shall be quickly weighed. 6.3 Determination 6.3.1 Spread the sample (6.2) flat in a platinum crucible (including a platinum cover) that has been burned and weighed at 1050 °C. 6.3.4 Place the platinum crucible and platinum lid in the high-temperature furnace again. Burn them at 1050 °C ± 50 °C for 15 min. Continue operation according to 6.3.3, until the difference between the two consecutive weighing does not exceed 1.0 mg.7 Calculation and expression of analytical results7.1 Calculation of analytical results Calculate the mass fraction of loss on ignition according to formula (1).8 Precision8.1 Limestone and dolomite The precision data is determined in 2012 by 8 laboratories on the loss on ignition of 5 different levels of samples of limestone and dolomite. The loss on ignition for each level is independently measured 3 times under the repeated conditions by each laboratory. 8.2 Metallurgical lime Table 2 shows the allowable difference in laboratory precision of metallurgical lime samples. For metallurgical lime, there is no requirement for the allowable difference between laboratories. 8.3 Description The mass fraction of loss on ignition is between the values given in Table 1 and Table 2.The repeatability limit r, reproducibility limit R, the allowable difference in the laboratory can be obtained by linear interpolation.9 Test reportThe test report shall include the following. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 3286.8-2014 be delivered?Answer: The full copy PDF of English version of GB/T 3286.8-2014 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 3286.8-2014_English with my colleagues?Answer: Yes. 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