GB/T 2272-2020 English PDF (GBT2272-2020)

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GB/T 2272-2020: Ferrosilicon
GB/T 2272-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.100
H 42
Replacing GB/T 2272-2009
Ferrosilicon
(ISO 5445:1980, Ferrosilicon - Specification and Conditions of Delivery, MOD)
ISSUED ON: JUNE 02, 2020
IMPLEMENTED ON: SEPTEMBER 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Notations for Designation ... 6
4 Technical Requirements ... 7
5 Test Methods ... 10
6 Inspection Rules ... 11
7 Judgment and Reinspection ... 11
8 Packaging, Storage and Transportation, Marking and Quality Certificate ... 11
Appendix A (Informative) Structural Changes of This Standard Compared with
ISO 5445:1980 ... 13
Appendix B (Informative) The Technical Differences and Their Causes between
this Standard and ISO 5445:1980 ... 14
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 2272-2009 Ferrosilicon. Compared with GB/T 2272-2009,
this Standard has the major technical changes as follows:
--- Add GB/T 4333.5 and YB/T 4462 to the Normative References (see Clause 2 of
this Edition; Clause 2 of 2009 Edition);
--- The existing classification of ferrosilicon is divided into high-silicon ferrosilicon
(GG), ordinary ferrosilicon (PG), low-aluminum ferrosilicon (DL) and high-purity
ferrosilicon (GC) according to silicon content and main impurity elements. (see
Clause 3 of this Edition; 3.1 of 2009 edition);
--- Adjust the designations of ferrosilicon from 21 designations to 40 designations
(see 4.1.1 of this Edition; 4.1.1 of 2009 edition);
--- Adjust the chemical composition of some ferrosilicon designations (see 4.1.2 of
this Edition; 4.1.2 of 2009 edition);
--- Adjust the particle size specifications of ferrosilicon to four types: natural block,
processed block, silicon particle and silicon powder (see 4.2.3 of this Edition;
4.2.2 of 2009 edition);
--- Add the determination and re-inspection of ferrosilicon (see Clause 7).
This Standard uses re-drafting method to modify and adopt ISO 5445:1980
Ferrosilicon – Specification and Conditions of Delivery.
Compared with ISO5445:1980, the structure of this standard has been adjusted.
Appendix A lists the comparison table of the Clause No. between this Standard and
ISO5445:1980.
Compared with ISO5445:1980, this Standard made technical differences. The terms
and clauses of these differences have been marked by a vertical single line (︱) on the
outer margin of this Standard. Appendix B lists the corresponding technical differences
and their causes.
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Pig-Irons and Ferroalloys (SAC/TC 318).
Drafting organizations of this Standard: Erdos Xijing Kuangye Co., Ltd.; Inner Mongolia
Erdos Electric Power and Metallurgy Co., Ltd.; Tianjin Tiangang United Special Steel Co.,
Ferrosilicon
1 Scope
This Standard specifies the notations for designation, technical requirements, test
methods, inspection rules, judgment and re-inspection, packaging, storage and
transportation, marking and quality certificates of ferrosilicon.
This Standard is applicable ferrosilicon serving as deoxidizer and alloying agent in the
iron and steel industry; ferrosilicon serving as inoculant and nodulizer in the foundry
industry; and ferrosilicon serving as reducing agent in the magnesium industry and
ferroalloy industry.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
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 4010-2015, ISO 4552-1:1987, ISO 4552-2:1987, MOD)
GB/T 4333.1 Ferrosilicon - Determination of Silicon Content - Perchloric Acid
Dehydration Gravimetric Method and Potassium Fluosilicate Volumetric Method
GB/T 4333.2 Methods for Chemical Analysis of Ferrosilicon - The Reduced
Molybdobismuthyl phosphoric 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 Aluminum Content - The Chrome
azurol S Spectrophotometric Method - The EDTA Titrimetric Method and the Flame
Atomic Absorption Spectrometric Method
GB/T 4333.5 Ferrosilicon - Determination of Silicon, Manganese, Aluminum,
Calcium, Chromium and Iron Contents - Wavelength Dispersive X-Ray
Fluorescence Spectrometry (Fused Cast Bead Method)
GB/T 4333.6 Ferrosilicon – Determination of Chromium Content -
Diphenylcarbazide Spectrophotometric Method
GB/T 4333.7 Ferrosilicon - Determination of Sulfur Content - Infrared Absorption
Method and Chromatographic Separation-Barium Sulfate Gravimetric Method
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 Ferrosilicon - Determination of Carbon Content - Infrared
Absorption Method
GB/T 7738 Notations for Designation of Ferroalloys
GB/T 13247 Methods for Sampling and Testing the Grain Size of Ferroalloys
Products (GB/T 13247-2019, ISO 4551:1987, MOD)
GB/T 24194 Ferrosilicon - Determination of Aluminum Calcium Manganese
Chromium Titanium Copper Phosphorus and Nickel Content - Inductively Coupled
Plasma Atomic Emission Spectrometric Method
YB/T 4462 High Purity Ferrosilicon - Determination of Boron Content - Inductively
Coupled Plasma Atomic Emission Spectrometric Method
3 Notations for Designation
Ferrosilicon designations are implemented in accordance with the provisions of GB/T
7738; and are divided into four categories, such as high-silicon ferrosilicon (GG),
ordinary ferrosilicon (PG), low-aluminum ferrosilicon (DL) and high-purity ferrosilicon
(GC) based on the silicon content and main impurity elements of ferrosilicon.
The meanings of the symbols and numbers of each part of the ferrosilicon designations
are as follows
6 Inspection Rules
6.1 Batching
Ferrosilicon is batched according to the same designation, but the fluctuation range of
silicon content shall not exceed 3%.
6.2 Sampling and sample preparation
The method of sampling and sample preparation of ferrosilicon shall be as specified in
GB/T 4010.
6.3 Quality inspection and acceptance
The quality inspection and acceptance of ferrosilicon shall be as specified in GB/T
3650.
6.4 Sampling and acceptance of particle size
The sampling method and acceptance of the particle size of ferrosilicon shall be as
specified in GB/T 13247.
7 Judgment and Reinspection
7.1 The inspection result shall be judged according to the technical requirements.
7.2 When the purchaser has any objection to the quality of the product, it shall be
raised within 20 working days from the date of receipt; and the supplier and the buyer
(or entrusted to a third party) shall jointly re-sampling and re-inspect, and determin...