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Ys T 2541 2011 Translated English Of Chinese Standard Ys T 2541 2011 Yst2541 2011
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Book Synopsis YS/T 751-2011 Translated English of Chinese Standard. (YST 751-2011, YS/T751-2011, YST751-2011) by : https://www.chinesestandard.net
Download or read book YS/T 751-2011 Translated English of Chinese Standard. (YST 751-2011, YS/T751-2011, YST751-2011) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2018-05-05 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the designation and chemical composition requirements, sampling and chemical composition analysis for wrought tantalum and tantalum alloy products. This Standard applies to all types of wrought tantalum and tantalum alloy products (including cast ingots, sintering blanks, semi-finished products and finished products).
Book Synopsis YS/T 261-2011 Translated English of Chinese Standard. (YST 261-2011, YS/T261-2011, YST261-2011) by : https://www.chinesestandard.net
Download or read book YS/T 261-2011 Translated English of Chinese Standard. (YST 261-2011, YS/T261-2011, YST261-2011) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2019-04-07 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and contract (or order form) content of spodumene concentrate. This Standard is applicable to spodumene concentrate, which is obtained through various mineral processing methods and enrichment. The spodumene concentrate has been extensively applied to the glass and ceramic industry, and the production of various chemical products of lithium.
Book Synopsis YS/T 254.1-2011 Translated English of Chinese Standard (YS/T 254.1-2011, YST254.1-2011) by : https://www.chinesestandard.net
Download or read book YS/T 254.1-2011 Translated English of Chinese Standard (YS/T 254.1-2011, YST254.1-2011) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2023-10-14 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Part of YS/T 254 specifies the method for determining the content of beryllium oxide in beryllium concentrate and beryl. This Part is applicable to the determination of beryllium oxide in beryllium concentrate and beryl. The determination range is 6.00%~14.00%. 2 Method summary The test material is melted with potassium hydrofluoride. Beryllium is converted into beryllium fluoride salt. After sulfuric acid fumes and melts, it is converted into beryllium sulfate. Leach with water. Acidify with hydrochloric acid. Use hydrogen peroxide and disodium ethylenediaminetetraacetate to complex impurity elements. In the presence of ammonium acetate, diammonium hydrogen phosphate is used to precipitate beryllium twice at a pH value of 5.2~5.8. The precipitate is burned into beryllium pyrophosphate at 1000??C. Weigh to constant. 3 Reagents 3.1 Potassium hydrofluoride. 3.2 Sulfuric acid (??1.84 g/mL). 3.3 Hydrochloric acid (??1.19 g/mL). 3.4 Hydrogen peroxide (??1.10 g/mL). 3.5 Ammonia (??0.90 g/mL). 3.6 Hydrochloric acid solution (1+3). 3.7 Ammonia (1+1). 3.8 Diammonium hydrogen phosphate solution (132.5 g/L): Weigh 132.5 g of diammonium hydrogen phosphate. Dissolve in 500 mL of water. Filter. Transfer to a YS/T 254.1-2011 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery. Page 6 of 9 1000 mL volumetric flask. Dilute to volume with water. Mix well. 3.9 Disodium ethylenediaminetetraacetate solution (150 g/L): Weigh 150 g of disodium ethylenediaminetetraacetate. Place in a 400 mL beaker. Add ammonia (3.5) to dissolve (filter if necessary). Add a few drops of methyl red ethanol solution (1 g/L). Neutralize to red color with hydrochloric acid solution (1+1). Add more drops of ammonia (3.7) until it just turns yellow. Transfer to a 1000 mL volumetric flask. Dilute to vo
Book Synopsis YS/T 3005-2011 Translated English of Chinese Standard. (YST 3005-2011, YS/T3005-2011, YST3005-2011) by : https://www.chinesestandard.net
Download or read book YS/T 3005-2011 Translated English of Chinese Standard. (YST 3005-2011, YS/T3005-2011, YST3005-2011) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2019-05-11 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the methods for sampling and sample preparation of flotation gold concentrate, methods for determination of moisture, test methods for the quality fluctuation of gold concentrate assessment, test methods for the precision of calibration sampling. This standard is applicable to the sampling and preparation of samples for the chemical composition and moisture of bulk and bagged flotation gold concentrates as well as the determination of moisture.
