X-射线荧光法测定煤和焦炭灰分中主要和次要元素的标准试验方法

详细信息   

• 标准号：ASTM D4326-2011
• 发布日期：2011
• 英文题名：Standard Test Method for Major and Minor Elements in Coal and Coke Ash By X-Ray Fluorescence
• 英文主题词：coal ; coal ash ; major elements ; minor elements ; X-ray fluorescence ; Aluminum oxide (Al2O3) content--coal/coke ash ; Calcium oxide (CaO) content--coal and coke ash ; Coal ash ; Coke ash ; Iron oxide content--coal/coke ash ; Magnesium oxide (MgO) content--coal and coke ash ; Phosphorus pentoxide content--coal/coke ash ; Potassium oxide (K2O) content--coal/coke ash ; Silicon dioxide (SiO2) content--coal/coke ash ; Sodium oxide (Na2O) content--coal/coke ash ; Spectroscopy--X-ray fluorescence (XRF) ; Titanium dioxide (TiO2) content--coal and coke ash ; XRF (X-ray fluorescence)
• 标准状态：现行
• 发布单位：US-ASTM
• 国际标准分类号：75.160.10 (Solid fuels)
• 载体形态：4P.;A4
• 中国标准分类号：D21
• 国别：美国材料与试验协会

文摘

A compositional analysis of ash is used in describing the quality of coal for its complete characterization. Ash composition is useful in predicting slagging and fouling characteristics of combusted materials as well as the potential utilization of ash by-products.

The chemical composition of laboratory prepared coal or coke ash is rarely, if ever, representative of the composition of the mineral matter in the coal because the ashing process can alter some minerals. However, it can approximate the composition of the fly ash and slag resulting from commercial combustion of coal or coke.

1.1 This test method covers the analysis of the commonly determined major and minor elements in ash from coal or coke using X-ray fluorescence (XRF) techniques.

Note 18212;Test Method D1757 is used for determination of sulfur.

Note 28212;Although not included in the present method, the determination of barium, strontium, and manganese may be required to yield adequate totals.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.