PDF YB/T 101-2018 English (YB/T 101-2005: Older version)
Search result: YB/T 101-2018 (YB/T 101-2005 Older version)
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| YB/T 101-2018 | English | 90 |
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Synthesized MgO-CaO-Fe2O3 material for EAF bottom
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| YB/T 101-2005 | English | 279 |
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Synthesized MgO-CaO-Fe2O3 material for EAF bottom
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| YB/T 101-1997 | English | 239 |
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MgO-CaO-Fe2O3 System synthesized material for bottom of electro-arc furnaces
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PDF Preview: YB/T 101-2018
YB/T 101-2018: PDF in English (YBT 101-2018) YB/T 101-2018
YB
FERROUS METALLURGY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 73.080
D 52
Replacing YB/T 101-2005
Synthesized MgO-CaO-Fe2O3 material for EAF bottom
ISSUED ON: OCTOBER 22, 2018
IMPLEMENTED ON: APRIL 01, 2019
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Designation ... 4
4 Technical requirements ... 5
5 Test method ... 5
6 Inspection rules ... 6
7 Packaging, marking, transportation, storage, quality certificate ... 6
Appendix A (Normative) Inspection method for room temperature compressive
strength and permanent linear change after heating ... 7
Synthesized MgO-CaO-Fe2O3 material for EAF bottom
1 Scope
This standard specifies the designation, technical requirements, test methods,
inspection rules, packaging, marking, transportation, storage, quality certificate of
synthesized MgO-CaO-Fe2O3 materials for EAF bottoms.
This standard is applicable to synthesized MgO-CaO-Fe2O3 materials for steelmaking
EAF bottoms, chromium-iron alloy, nickel-iron alloy EAF bottoms, manganese-iron
alloy EAF bottoms.
2 Normative references
The following documents are indispensable for the application of this document. For
all dated references, only the dated version is applicable to this document. For any
undated referenced document, the latest version (including all amendments) shall apply
to this document.
GB/T 2007.7 General rules for the sampling and sample preparation of minerals in
bulk - The method for determination of size by manual sieving
GB/T 2999 Refractory materials - Determination of bulk density of granular
materials
GB/T 5069 Chemical analysis of magnesia-alumina refractories
GB/T 17617 Rule of sampling and inspection for refractory raw materials
GB/T 21114 Chemical analysis of refractory products by XRF - Fused cast bead
method
YB/T 5142 The general rules for packing, marking, transporting, saving and
certification of metallurgical mine
3 Designation
3.1 Designation
Synthesized MgO-CaO-Fe2O3 materials for EAF bottom are divided into four
designations according to physical and chemical indicators:
Appendix A
(Normative)
Inspection method for room temperature compressive strength and permanent
linear change after heating
A.1 Scope
This method is applicable to the test of room temperature compressive strength and
permanent linear change after heating of synthesized MgO-CaO-Fe2O3 materials for
EAF bottom.
A.2 Normative references
The following documents are indispensable for the application of this document. For
all dated references, only the dated version applies to this document. For all undated
references, the latest version (including all amendments) applies to this document.
GB/T 5072 Refractories - Determination of cold compressive strength
GB/T 5988 Refractory products - Determination of permanent change in dimension
on heating
A.3 Permanent linear change after heating
A.3.1 Specimen preparation
Take 2 pieces of qualified burnt magnesia bricks (MZ-95) with a size of (230×115×65)
mm. Use a hollow drill with a diameter of 65 mm to drill 3 holes of diameter × height:
(65 × 65) mm evenly distributed in the height direction of each brick. Then put the
drilled bricks into a drying oven and dry them at 150 °C for 2 h. Place the dried drilled
bricks on the pre-prepared pad bricks, which have a size of (230 × 115 × 65) mm. The
surface of the drilled bricks and pad bricks must be flat; there must be no gaps on the
contact surface between the drilled bricks and the pad bricks. The drilled bricks and pad
bricks are used as a set of molds for standby.
Take the qualified products, mix them evenly again; pour them into 3 holes with
diameter × height: (65 × 65) mm; tamp them manually with tamping tools (fork,
hammer). The density after tamping shall be greater than 2.7 g/cm3; the surface of the
material after tamping shall be on the same plane as the brick.
A.3.2 Test procedure
The test is carried out by measuring ruler method. Before the hole brick is put into the
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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