GB/T 3884.15-2025 English PDFGB/T 3884.15: Historical versions
Basic dataStandard ID: GB/T 3884.15-2025 (GB/T3884.15-2025)Description (Translated English): Methods for chemical analysis of copper concentrate - Part 15: Determination of total iron and ferriferrous oxide contents Sector / Industry: National Standard (Recommended) Date of Implementation: 2026-03-01 Older Standard (superseded by this standard): GB/T 3884.15-2014 GB/T 3884.15-2014: Methods for chemical analysis of copper concentrates -- Part 15: Determination of iron content -- Potassium dichromate titration 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. Methods for chemical analysis of copper concentrates Part 15. Determination of iron content Potassium dichromate titration method. ICS 77.120.60 H13 National Standards of People's Republic of China Methods for chemical analysis of copper concentrates Part 15. Determination of iron content Dichromate method Part 15. Determinationofironcontent- Issued on. 2014-12-05 2015-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordGB/T 3884 "Methods for chemical analysis of copper concentrate" is divided into 18 parts. --- Part 1. Determination of copper content iodometry; --- Part 2. Determination of the amount of gold and silver by flame atomic absorption spectroscopy and fire assay; --- Part 3. Determination of sulfur content - Gravimetric and combustion - titration; --- Part 4. Determination of magnesium oxide content - Flame atomic absorption spectrometry; --- Part 5. Determination of the amount of fluorine ion selective electrode method; --- Part 6. Determination by flame atomic lead, zinc, cadmium and nickel absorption spectrometry; --- Part 7. Determination of lead content Na2EDTA titration; --- Part 8. Determination of zinc contents Na2EDTA titration; --- Part 9. Determination of the amount of arsenic and bismuth hydride generation - atomic fluorescence spectrometry, potassium bromate titration and diethyl dithiocarbamate Acid silver spectrophotometry; --- Part 10. Determination of antimony content hydride generation - atomic fluorescence spectrometry; --- Part 11. Determination of mercury content - Cold atomic absorption spectrometry; --- Part 12. Determination of the amount of fluorine and chlorine ion chromatography; --- Part 13. Determination of copper content electrolysis; --- Part 14. Determination of the amount of gold and silver fire assay gravimetric method and atomic absorption spectrometry; --- Part 15. Determination of iron content dichromate method; --- Part 16. Determination of the amount of silica potassium fluosilicate titration and gravimetric method; --- Part 17. alumina amount Chromazurol S Solubilization Spectrophotometric and precipitation - fluoride replacement - Na2EDTA titration; --- Part 18. arsenic, antimony, bismuth, lead, zinc, nickel, cadmium, cobalt, magnesium oxide, calcium oxide content - Inductively coupled plasma atomic hair Emission spectrometry. This is Part 15 GB/T 3884's. This section drafted in accordance with GB/T 1.1-2009 given rules. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. Daye Nonferrous Metals Group Holdings Limited. This section is drafted. Daye Nonferrous Metals Group Holdings Limited, Zhongtiaoshan Nonferrous Metals Group Co., Ltd., Beijing Mining and Metallurgy Research General Hospital, Jiangxi Copper Co., Ltd., Tongling Nonferrous Metals Group Holdings Co., Ltd., Yunnan Copper Co., Ltd., Yanggu Yoshimitsu Copper Co., Ltd. Zhejiang Huayou Cobalt Co., Baiyin Nonferrous Group Co., Ltd. The main drafters of this section. Ho Mei, Zeng Jing, Chen Lan, Chen Yan, Jiang Tao seeking, Jing Wang Furong, Fu Yuxia, ZHU Yu-xia, DONG Xiao-Lin, Ma Lijun, Yu Chen Bin, Zheng Wenying, Zhang, and Li Chaoyang, Xie Bohua, Fanjuan Hui, Wang Dongzhen, Li Yulin. Methods for chemical analysis of copper concentrates Part 15. Determination of iron content Dichromate method1 ScopeGB/T 3884 This section specifies the method for determination of iron content in copper concentrate. This section applies to the determination of iron content in copper concentrates. Measurement range of 8.00% - 40.00%.2 Method summaryThe sample was dissolved using hydrochloric acid, nitric acid, sulfuric acid, ammonia - ammonium chloride precipitation of iron and copper substrate separated in hydrochloric acid medium, large stannous chloride reduction Part of iron, the remaining small amount of iron by a sodium tungstate as an indicator of titanium trichloride reduction, added parathion mixed acid, sodium diphenylamine sulfonate as indicator, with a heavy Potassium chromate standard solution titration titration.3 ReagentsUnless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. 3.1 ammonium chloride. 3.2 hydrochloric acid (ρ = 1.19g/mL). 3.3 hydrochloride (11). 3.4 hydrochloride (15). 3.5 hydrochloric acid (595). 3.6 nitric acid (ρ = 1.42g/mL). 3.7 sulfate (ρ = 1.84g/mL). 3.8 perchloric acid (ρ = 1.53g/mL). 3.9 Hydrofluoric acid (ρ = 1.14g/mL). 3.10 phosphoric acid (ρ = 1.69g/mL). 3.11 sulfur nitrate mixed acid (73). A 30mL sulfuric acid (3.7) slowly injected 70mL of nitric acid (3.6) and continue stirring to mix. 3.12 parathion mixed acid. A 150mL sulfuric acid (3.7) slowly into 700mL of water and continue mixing, cooled to room temperature, 150mL phosphoric acid (3.10) and mix. 3.13 aqueous ammonia (ρ = 0.88g/mL). 3.14 ammonia bath. 10mL ammonia diluted with water (3.13) to 100mL. 3.15 stannous chloride solution (60g/L). Weigh 6g stannous chloride dissolved in 20mL hot hydrochloric acid (3.2), diluted with water to 100mL, Mix well. 3.16 titanium trichloride solution (114). Pipette solution of titanium trichloride 2mL 15% ~ 20% (m/V), diluted to 30mL with hydrochloric acid (3.4). The time is now equipped with. 3.17 copper sulphate solution (5g/L). Weigh 0.78g of copper sulfate pentahydrate dissolved in 100mL of water. 3.18 sodium tungstate solution (250g/L). Weigh 25g of sodium tungstate dissolved in an appropriate amount of water, adding 5mL phosphoric acid (3.10), dilute with water to 100mL. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 3884.15-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 3884.15-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 3884.15-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 3884.15-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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