GB/T 4701.2-2009 English PDF

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GB/T 4701.2-2009: Ferrotitanium -- Determination of silicon content -- The sulphuric acid dehydration gravimetric method
Status: Valid

GB/T 4701.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4701.2-2009	139	Add to Cart	3 days	Ferrotitanium -- Determination of silicon content -- The sulphuric acid dehydration gravimetric method	Valid
GB/T 4701.2-1984	199	Add to Cart	2 days	Methods for chemical analysis of ferrotitanium--The gravimetric method for the determination of silicon content	Obsolete

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Basic data

Standard ID: GB/T 4701.2-2009 (GB/T4701.2-2009)
Description (Translated English): Ferrotitanium -- Determination of silicon content -- The sulphuric acid dehydration gravimetric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H11
Classification of International Standard: 77.100
Word Count Estimation: 6,610
Date of Issue: 2009-07-08
Date of Implementation: 2010-04-01
Older Standard (superseded by this standard): GB/T 4701.2-1984
Quoted Standard: GB/T 4010
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.9 (Total No.149)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the sulfuric acid dehydration gravimetric method-Determination of silicon content of ilmenite. This section applies to the determination of silicon content in ilmenite. Measuring range (mass fraction): 1. OO% -6. 00%.

GB/T 4701.2-2009: Ferrotitanium -- Determination of silicon content -- The sulphuric acid dehydration gravimetric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Ferrotitanium.Determination of silicon content.The sulphuric acid dehydration gravimetric method ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 4701.2-1984 Determination of silicon content of ilmenite Sulfuric acid dehydration gravimetric method Posted 2009-07-08 2010-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This Part replaces GB /"ferrotitanium chemical determination of silicon content - Gravimetric method" T 4701.2-1984. This portion of the GB/T 4701.2-1984 comparison, the main changes are. --- Sample decomposition method has been modified to increase the acid-soluble residue after processing steps; --- Adjustment sulfuric acid (1 + 4) is used in an amount from 100mL to 120mL; --- Twice precipitated by the firing temperature 1100 ℃ to 1050 ℃. This part is proposed by the China Iron and Steel Association. This part of pig iron and ferroalloy by the National Standardization Technical Committee. This section is drafted. Sichuan Investment Emei Ferroalloy (Group) Co., Ltd. The main drafters of this section. should Tang Hua, Fang Yan, Xuexiu Ping, Duzeng Yong. This part of the standard replaces the previous editions are. --- GB/T 4701.2-1984. Determination of silicon content of ilmenite Sulfuric acid dehydration gravimetric method Warning --- Use this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This section specifies the determination of the silicon content of ilmenite with sulfuric acid dehydration gravimetric method. This section applies to the determination of silicon content in ferrotitanium. Measurement range (mass fraction). 1.00% - 6.00%.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this section. For dated references, subsequently Some amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to agreements based on this research Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 4010 alloy chemical analysis and preparation of samples Principle 3 The sample was dissolved in sulfuric acid and hydrochloric acid until no reaction was filtered, and the residue used mixed flux of sodium oxide and sodium carbonate melt processed after the original filter Were combined, then hydrogen peroxide, the solution was evaporated to take fuming sulfuric acid, dehydrated silicic acid, hydrochloric acid to dissolve the soluble salts, the precipitate is separated, dried After filtration the precipitate was washed with ignition at 1050 ℃ to constant weight, and then treated with sulfuric acid and hydrofluoric acid, silicon tetrafluoride to silicon escape, hydrofluoric acid Poor quality before and after treatment, calculated content of silicon in the sample.

4 Reagents and materials

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water. 4.1 sodium peroxide, solid. 4.2 anhydrous sodium carbonate solids. 4.3 hydrochloride, ρ1.19g/mL. 4.4 hydrofluoric acid, ρ1.15g/mL. 4.5 Hydrogen peroxide, ρ1.10g/mL. Sulfate 4.6, 1 + 1. 4.7 sulfate, 1 + 4. 4.8 washing solution. pipette 20mL of hydrochloric acid (4.3) in 960mL of water, after mixing, was added 20mL of hydrogen peroxide (4.5), and mix.

5 Sampling and Preparation

In accordance with the provisions of GB/T 4010 will be sampling and sample preparation, the sample should be adopted 0.125mm sieve. Step 6 Analysis 6.1 Sample volume Weigh 1.00g sample, accurate to 0.0001g. 6.2 blank test Along with sample blank test. ......

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