Gb T 1171 2006 Translated English Of Chinese Standard Gbt 1171 2006 Gb T1171 2006 Gbt1171 2006

Author : https://www.chinesestandard.net
Publisher : https://www.chinesestandard.net
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4./5 ( download)

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Download or read book GB/T 1870-1995 Translated English of Chinese Standard (GB/T 1870-1995, GBT1870-1995) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2023-08-03 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the gravimetric method for the determination of moisture. This standard applies to the determination of moisture in phosphate rock and phosphate concentrate products. 2 Method summary The specimen is dried at 105 ~ 110 ??C. The moisture is calculated according to the lost mass. 3 Instruments 3.1 Sample holder 1: Enamel plate. 3.2 Sample holder 2: Weighing bottle, flat, with ground mouth, 50 mm in diameter, about 30 mm in height. 3.3 Oven: It is equipped with an automatic temperature controller. 4 Specimen The specimen passes through a 10 mm and 425 ?m test sieve (GB 6003). 5 Analytical procedures 5.1 Phosphate rock Weigh about 1000 g of a specimen, which is less than 10 mm, accurate to 1 g. Evenly spread it on an enamel dish (3.1) of known mass; the thickness shall be less than 20 mm. Place in an oven, to dry it at 105 ~ 110 ??C for 3 h. Stir it gently once after a certain period of time. Take out the enamel dish. Cool to room temperature. Weigh it. Repeat the drying. The difference between the two weighings is not more than 2 g. 5.2 Phosphorus concentrate GB/T 1870-1995 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery. Page 5 of 5 Weigh about 10 g of a specimen, which is le