用配位滴定法测定锌矿石和精矿中锌的标准试验方法

详细信息   

• 中文主题词：浓缩物
• 标准号：ASTM E945-2012
• 发布日期：2012
• 英文题名：Standard Test Method for Determination of Zinc in Zinc Ores and Concentrates by EDTA Complexometric Titrimetry
• 英文主题词：concentrates ; EDTA titration ; extraction ; zinc ores
• 标准状态：现行
• 发布单位：US-ASTM
• 国际标准分类号：73.060.99
• 载体形态：4P.;A4
• 国别：美国材料与试验协会

文摘

This test method is primarily intended to test materials for compliance with compositional specifications. It is assumed that all who use this test method will be trained analysts working in properly equipped laboratories.

Appropriate quality control practices shall be followed such as those described in Guide E882.

1.1 This test method covers the determination of zinc in ores, concentrates, and related materials having chemical composition within the following limits:

Element	Application Range, %
Zinc	5.0 to 70.0
Lead	0.5 to 50.0
Copper	0.1 to 3.0
Iron	0.5 to 16.0
Sulfur	4.0 to 30.0
Calcium	0.1 to 20.0
Magnesium	0.1 to 10.0
Cadmium	0.1 to 8.0
Arsenic	0.01 to 1.0
Antimony	0.01 to 0.005
Bismuth	0.001 to 0.1
Cobalt	0.1 to 0.5
Nickel	0.3 to 3.0
Silver	0.00 to 150 oz/ton
Gold	0.00 to 1.0 oz/ton

Note 18212;As used in this test method, percent or x201C;%x201D; refers to a mass fraction.

1.2 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.