Standard No.:	YS/T 820.23-2012
English Name:	Methods for chemical analysis of laterite nickel ores―Part 23:Determination of cobalt,iron,nickel,phosphorus,aluminium oxide,calcium oxide,chromium oxide,magnesium oxide,manganese oxide,silicon dioxide and titanium dioxide content―Wavelength dispersive
Chinese Name:	红土镍矿化学分析方法 第23部分: 钴、铁、镍、磷、氧化铝、氧化钙、氧化铬、氧化镁、氧化锰、二氧化硅和二氧化钛量的测定 波长色散X射线荧光光谱法
Chinese Classification:	D04    Basic standard and general method
Professional Classification:	YS    Professional Standard - Non-ferrous Metal
Issued by:	Ministry of Industry and Information Technology
Issued on:	2012-11-07
Implemented on:	2013-3-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	130.0
Delivery:	via email in 1 business day

Methods for chemical analysis of laterite nickel ores— 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 1 Scope This part of YS/T 820 specifies the wavelength dispersive X-ray fluorescence spectrometry for the determination of cobalt, iron, nickel, phosphorus, aluminum oxide, calcium oxide, chromium oxide, magnesium oxide, manganese oxide, silicon dioxide and titanium dioxide in laterite nickel ores. This part is applicable to the determination of cobalt, iron, nickel, phosphorus, aluminum oxide, calcium oxide, chromium oxide, magnesium oxide, manganese oxide, silicon dioxide and titanium dioxide content in laterite nickel ores. See Table 1 for the determination range. Table 1 Determination range of each component in laterite nickel ores 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6379.2-2004 Accuracy (trueness and precision) of measurement methods and results—Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method (ISO 5725-2:1994, IDT) GB/T 16597 Analytical methods of metallurgical products—General rule for X-ray fluorescence spectrometric methods YS/T 820.24-2012 Methods for chemical analysis of laterite nickel ores—Determination of hygroscopic moisture content—Gravimetric method 3 Method summary The test material is melted and cast with flux to form a test material melting piece suitable for measurement by X-ray fluorescence spectrometer. Under the selected instrument measurement conditions, measure the X-ray fluorescence intensity of the characteristic spectral line of the element to be measured in the test material melting piece, calculate it according to the calibration curve or equation, and correct the interference effect between elements to obtain the content of the component to be measured in the sample. 4 Reagents and materials

Foreword i 1 Scope 2 Normative references 3 Method summary 4 Reagents and materials 5 Instruments and equipment 6 Specimen 7 Analytical procedures 8 Precision 9 Test report Annex A (Informative) Preparation of calibration samples Annex B (Informative) Reference working conditions for instruments Annex C (Informative) Calibration equation