GB/T 2273-2007 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 2273-2007	90	Add to Cart	Auto, < 3 mins	Sintered magnesia	Valid
GB/T 2273-1998	239	Add to Cart	2 days	Sintered magnesia	Obsolete
GB/T 2273-1988	RFQ	ASK	3 days	Magnesia	Obsolete

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Basic data

Standard ID: GB/T 2273-2007 (GB/T2273-2007)
Description (Translated English): Sintered magnesia
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q43
Classification of International Standard: 81.080
Word Count Estimation: 6,688
Date of Issue: 2007-12-29
Date of Implementation: 2008-06-01
Older Standard (superseded by this standard): GB/T 2273-1998
Regulation (derived from): National Standard Approval Announcement 2007 No.13 (Total No.113)
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 sintered magnesia grades, technical requirements, test methods, quality assessment procedures and packaging, signs, storage and quality certificate, transport. This standard applies to the production of sintered magnesia refractories used.

GB/T 2273-2007: Sintered magnesia

---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.
Sintered magnesia ICS 81.080 Q43 National Standards of People's Republic of China Replacing GB/T 2273-1998 Sintered magnesia Posted 2007-12-29 2008-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 2273-1998 "sintered magnesia." This standard and GB/T 2273-1998 compared to the following changes. --- MS97 grade level reclassification. canceled a standard Class A, B and C will be adjusted to the A and B having a particle bulk density Of 3.35g/cm3 and 3.30g/cm3 adjusted to 3.33g/cm3 and 3.28g/cm3; --- MS96, MS95 and MS90 away with grades A and B grade; --- Increased MS94 and MS92 grades canceled MS93 grade; --- Affordable sintered magnesia CaO content limit values ≤1.6% and ≤2.0% by the adjustment were ≤1.8% and ≤2.5%. This standard by the National Standardization Technical Committee Refractories and centralized. This standard drafting of the main unit. Liaoning Provincial People's Government of magnesium resource protection office, Metallurgical Industry Information Standards Institute. It participated in the drafting of this standard. Jiachen Group, Haicheng after the British Group, Haicheng Huayu Group, the Western Group, Yingkou blue group. The main drafters of this standard. Wang Jue, Wangzhao Min, Gao Jianping, the whole jump, Wei, Chenshu Jiang. This standard replaces the standards previously issued as follows. GB/T 2273-1988, GB/T 2273-1998. Sintered magnesia

1 Scope

This standard specifies grades, technical requirements, test methods, quality assessment procedures and packaging, labeling, transportation, storage and quality sintered magnesia certificate. This standard applies to the production of sintered magnesia refractories.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 2007.7 bulk minerals sampling and sample preparation method for determination of size by General manual sieving GB/T 2999 refractory particles of bulk density GB/T 5069 Methods for chemical analysis of Mg-Al refractories GB/T 17617 refractory raw materials and monolithic refractories sampling GB/T 18930 refractory term YB/T 5142 General provisions metallurgy mineral products packaging, marking and quality certificate

3 Terms and Definitions

GB/T 18930 and established in the following terms and definitions apply to this standard. 3.1 Sintering is not enough, loose structure. 3.2 Product non-calcined magnesium stone formation, such as black blocks, melt remaining tumor and coke and the like. Grade 4 Sintered magnesia by physical and chemical indicators are divided into 14 grades, see Table 1. The grades of magnesia MS Pinyin prefix, followed by numbers Representative mass percentage of magnesium oxide, alphanumeric after showing the same brand of different levels.

5 Technical requirements

5.1 sintered magnesia physical and chemical indicators should meet the requirements in Table 1. 5.2 sintered magnesia particles agreed by both parties. 5.3 sintered magnesia appearance shall meet the following requirements. --- MS98, MS97 and MS96 other brands can not be mixed due to burning products and impurities; --- MS95, MS94, MS92 and MS90 and other brands, block size greater than 30mm, the surface area due to burning products and impurities shall not exceed The surface area of magnesia block 1/4; 5mm ~ 30mm block size, the surface area due to burning products and impurities shall not exceed the magnesia block 1/2 of the surface area; --- MS88, MS87, MS84 and MS83 and other brands, block size greater than 30mm, the surface area due to burning products and impurities shall not exceed ......

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