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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: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4701.2-2009 | English | 139 |
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Ferrotitanium -- Determination of silicon content -- The sulphuric acid dehydration gravimetric method
| Valid |
GB/T 4701.2-2009
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| GB/T 4701.2-1984 | English | 199 |
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Methods for chemical analysis of ferrotitanium--The gravimetric method for the determination of silicon content
| Obsolete |
GB/T 4701.2-1984
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PDF similar to GB/T 4701.2-2009
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Count Estimation | 6,610 | | Date of Issue | 2009-07-08 | | Date of Implementation | 2010-04-01 | | Older Standard (superseded by this standard) | GB/T 4701.2-1984 | | Quoted Standard | GB/T 4010 | | Regulation (derived from) | PRC National Standard Approval Announcement 2009 No.9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
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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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