GB/T 2272-2020Ferrosilicon (English PDF)

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;

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

7 Judgment and Reinspection

8 Packaging, Storage and Transportation, Marking and

Quality Certificate