1 Scope
This standard specifies technical requirements, test methods, inspection rules, packaging, storage, transportation, marking and quality certificate of ferrosilicon.
This standard is applicable to ferrosilicon usually supplied as deoxidizer or alloy element introducer and magnesium metal for steelmaking and foundry use.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 3650 The general rules for inspection packing storing transportation marking and certification of ferroalloy
GB/T 4010 Ferroalloys — Sampling and preparation of samples for chemical analysis (GB/T 4010-1994, neq ISO 4552:1987)
GB/T 4333.1 Methods for chemical analysis of ferrosilicon — The perchloric acid dehydration-gravimetric method for the determination of silicon content
GB/T 4333.2 Methods for chemical analysis of ferrosilicon — The reduced molybdobismuthylphosphoric acid photometric method for the determination of phosphorus content
GB/T 4333.3 Methods for chemical analysis of ferrosilicon — The potassium periodate photometric method for the determination of manganese content
GB/T 4333.4 Ferrosilicon — Determination of aluminium content — The chromazurol S spectrophotometric method the EDTA titrimetric method and the flame atomic absorption spectrometric method (GB/T 4333.4-2007, ISO 4139:1979, MOD)
GB/T 4333.6 Methods for chemical analysis of ferrosilicon — The diphenylcarbazide photometric method for the determi nation of chromium content
GB/T 4333.7 Methods for chemical analysis of ferrosilicon — The chromatographic separation-barium sulfate gravimetric method for the determination of sulfur content
GB/T 4333.8 Methods for chemical analysis of ferrosilicon — The atomic absorption spectrometric method for the determination of calcium content
GB/T 4333.10 Methods for chemical analysis of ferrosilicon — The infrared absorption method for the determination of carbon content
GB/T 24194 Ferrosilicon — Determination of aluminium calcium manganese chromium titanium copper phosphorus and nickel content — Inductively coupled plasma atomic emission spectrometric method
GB/T 13247 Ferroalloys — Sampling and testing methods for determination of Particle size (GB/T 13247-1991, neq ISO 4551:1987)
3 Classification and Designation
