YS/T 820.24-2012 PDF EnglishUS$135.00 · In stock · Download in 9 seconds
YS/T 820.24-2012: Methods for chemical analysis of laterite nickel ores. Part 24: Determination hygroscopic moisture content. 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
Similar standardsYS/T 820.24-2012: Methods for chemical analysis of laterite nickel ores. Part 24: Determination hygroscopic moisture content. 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/YST820.24-2012 YS INDUSTRY STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 73.060 D 04 Methods for chemical analysis of laterite nickel ores - Part 24.Determination hygroscopic moisture content - Gravimetric method Issued on. NOVEMBER 7, 2012 Implemented on. MARCH 1, 2013 Issued by. Ministry of Industry and Information Technology of PRC Table of ContentsForeword... 3 1 Scope... 6 2 Method summary... 6 3 Apparatus... 6 4 Samples... 6 5 Analysis steps... 6 6 Calculation of analysis results... 7 7 Precision... 7 8 Test report... 8ForewordThis part was drafted in accordance with the rules given in GB/T 1.1-2009. YS/T 820-2012 Methods for chemical analysis of laterite nickel ores is divided into 26 parts. -- Part 1.Determination of nickel content - Flame atomic absorption spectrometry; -- Part 2.Determination of nickel content - Dimetylglyoxime spectrophotometry; -- Part 3.Determination of total iron content - Potassium dichromate titration; -- Part 4.Determination of phosphorus content - Phosphorus molybdenum blue spectrophotometry; -- Part 5.Determination of cobalt content - Flame atomic absorption spectrometry; -- Part 6.Determination of copper content - Flame atomic absorption spectrometry; -- Part 7.Determination of calcium and magnesium content - Flame atomic absorption spectrometry; -- Part 8.Determination of silica content - Potassium silicafluoride titrimetric method; -- Part 9.Determination of scandium and cadmium contents - Inductively coupled plasma mass spectrometry; -- Part 10.Determination of calcium, cobalt, copper, magnesium, manganese, nickel, phosphate and zinc content - Inductively coupled plasma atomic emission spectrometry; -- Part 11.Determination of fluorine and chlorine contents - Ion chromatography; -- Part 12.Determination of manganese content - Flame atomic absorption spectrometry; -- Part 13.Determination of lead content - Flame atomic absorption spectrometry; -- Part 14.Determination of zinc content - Flame atomic absorption spectrometry; -- Part 15.Determination of cadmium content - Flame atomic absorption spectrometry; -- Part 16.Determination of carbon and sulfur content - High frequency combustion with infrared absorption spectrometry; -- Part 17.Determination of arsenic, antimony and bismuth contents - Hydride generation-atomic fluorescence spectrometry; -- Part 18.Determination of mercury content - Cold atomic absorption spectrometry; -- Part 19.Determination of aluminum, chromium, iron, magnesium, manganese, nickel and silicon contents - Energy-dispersive X-ray fluorescence spectrometry; -- Part 20.Determination of aluminum content - EDTA titration; -- Part 21.Determination of chromium content - The ammonium-ferrous sulfate titration method; -- Part 22.Determination of magnesium content - EDTA titration; -- Part 23.Determination of cobalt, iron, nickel, phosphorus, aluminum oxide, calcium oxide, chromium oxide, magnesium oxide, manganese oxide, silicon dioxide and titanium dioxide content - Wavelength dispersive X-ray fluorescence spectrometry; -- Part 24.Determination hygroscopic moisture content - Gravimetric method; -- Part 25.Determination of combined water content - Gravimetric method; -- Part 26.Determination of loss on ignition - Gravimetric method. This part is Part 24 of YS/T 820-2012. This document shall be under the jurisdiction of the National Technical Committee on Nonferrous Metals of Standardization Administration of China (SAC/TC243). Drafting organizations of this standard. Beijing General Research Institute of Mining and Metallurgy, Bayuquan Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Jinchuan Group Co., Ltd. Drafting organizations of this part. Tianjin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. Participated organizations in the drafting of this part. Nantong Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Changshu Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Guangzhou Research Institute of Nonferrous Metals, Guangxi Yinyi Advanced Material Co., Ltd., Shandong Xinhai Technology Co., Ltd. The main drafters of this part. Ma Deqi, Hu Dexin, Su Mingyue, Hou Jin, Wu Guangyu, Dai Fengying, Chen Xiaodong, Wang Duodong, Wang Yaqin, Li Fenglong, He Zhongyu, Liu Hongsong, Sun Fengfei. Methods for chemical analysis of laterite nickel ores - Part 24.Determination hygroscopic moisture content - Gravimetric method1 ScopeThis part of YS/T 820 specifies the method for the determination of hygroscopic moisture content in the analysis of laterite nickel ores. This part applies to the determination of the hygroscopic moisture content in the analysis of laterite nickel ores, the determination range is 0.10%~7.00%.2 Method summaryThe sample is dried at 105 °C~110 °C, and the hygroscopic moisture content is calculated by the decrement method.3 Apparatus3.1 Weighing bottle. The diameter is not less than 5 cm, and it is equipped with a tight ground cap.4 SamplesThe particle size of the sample shall be less than 160 μm, and the sample shall have been balanced in the air.5 Analysis steps5.1 Samples Pre-dry the weighing bottle (3.1) in a drying oven (3.2) at 105 °C. After drying for 1 hour, take it out, cool it in a desiccator for 20-30 minutes, and weigh it. Weigh 1.0 g of the air-balanced sample into the weighing bottle, accurate to 0.0002 g, and spread it evenly in the weighing bottle. 5.3 Determination Place the open weighing bottle containing the sample (5.1) and the bottle cap in a drying oven (3.2) that has been stabilized at 105 °C, and dry for 1 hour; take them out from the drying oven, cover the ground cap immediately, and put the bottle in the desiccator to cool for 20 min~30 min; take out the weighing bottle from the desiccator, gently open the ground cap, then quickly cover it, and weigh them.6 Calculation of analysis resultsThe hygroscopic moisture content is expressed as the mass fraction of water 𝑤ୌమ, the value is expressed in %, and calculated according to formula (1).7 PrecisionThe measured values obtained from two independent tests under repeatability conditions shall be within the average value range given in Table 1; the absolute value of [Translator's note.8 Test reportThis chapter specifies the content to be included in the test report. 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