ASTM E2296 Standard Practice for Silver Corrections in Metal Bearing Ores, Concentrates, and Related Metallurgical Materials by Fire Assay Slag Recycling and Cupel Proof Gravimetry
ASTM E2296通过燃烧试验熔渣再利用和灰皿验证重量测定法修正含金属矿,精矿和相关冶金材料中的银值的标准规范
This practice is primarily intended to be used for the correction of silver loss in the fire assay process. Silver contents are determined by fire assay for the purpose of metallurgical exchange between buyer and seller. It is assumed that all who use this practice will be trained analysts capable of performing skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E 882.
1. Scope
1.1 This practice covers the silver loss correction, utilizing slag recycling and cupellation of proof silver during the fire assay of metal bearing ores, concentrates, and related metallurgical materials.
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. (See Practices E 50 and ISO 35:1989.)

2. Referenced Documents (purchase separately)
ASTM Standards
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E882 Guide for Accountability and Quality Control in the Chemical Analysis Laboratory
ISO Documents
ISO10378:1994 Copper Sulfide Concentrates--Determination of Gold and Silver Contents--Fire Assay Gravimetric and Atomic Absorption Spectrometric Method
Index Terms
cupellation; fire assay; silver; silver correction; Cupellation method; Fire assay slag recycling; Metal-bearing ores; Metallurgical materials/applications; Ores; Silver corrections;