1 Scope
This standard specifies the terms and definitions, principle, test equipment and apparatus, sample size, test procedures, test result calculation and test report for determination of the content of magnetic metallic iron in steel slag.
This standard is applicable to determination of the content of magnetic metallic iron in steel slag.
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 208 Test method for determining cement density
GB/T 6003.1 Test sieves - Technical requirements and testing - Part 1: Test sieves of metal wire cloth (GB/T 6003.1-2012, ISO 3310-1: 2000, MOD)
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
YB/T 140 Methods of chemical analysis for steel slag
YB/T 804 Terminology for iron and steel slag & treatment and utilization
3 Terms and definitions
For the purposes of this document, the terms and definitions given in YB/T 804 apply.
4 Principle
High-grade metallic iron is separated from particles with a size greater than 0.6mm through crushing, magnetic separation, ball milling and sieving, in which the content of metallic iron is determined and calculated according to the difference between the density of these particles and that of the metallic iron. The content of metallic iron in the undersize of a 0.6mm sieve and steel slag after magnetic separation is determined by chemical analysis method.
5 Test equipment and instruments
5.1 Weighing equipment
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test equipment and instruments
6 Sample size
7 Test procedures
8 Test result calculation
9 Test report
