A kind of magnesium breathable material for tundish and preparation method thereof
A breathable material and tundish technology, applied in the field of magnesium breathable materials, can solve problems such as large bubble diameter, low product strength, complex process, etc., and achieve high temperature flexural strength, high room temperature flexural strength, and stable air permeability Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0045] A magnesium gas permeable material for a tundish and a preparation method thereof. The steps of the preparation method described in this embodiment are:
[0046] In the first step, 45-55wt% magnesia fine powder, 5-10wt% magnesia-aluminum spinel fine powder, 1-5wt% α-Al 2 o 3 Micropowder, 5-10wt% aluminum hydroxide, 1-5wt% aluminum fluoride, 1-10wt% anhydrous magnesium sulfate, 1-5wt% zinc oxide, 1-5wt% dodecylbenzenesulfonic acid Sodium, 1-5wt% fatty alcohol polyoxyethylene ether sodium sulfate, 0.1-1wt% sodium hexametaphosphate and 1-5wt% calcium aluminate cement are mixed to obtain a mixture; and 15-20wt of the mixture is added % water, stirred evenly, poured and molded, cured for 10-15 hours to obtain a solidified green body.
[0047] The second step is to dry the cured green body at 90-120°C for 18-24 hours, and then heat-treat at 1450-1550°C for 5-7 hours to obtain pre-fired material; The material is crushed and sieved to obtain granular material A with a particl...
Embodiment 2
[0052] A magnesium gas permeable material for a tundish and a preparation method thereof. The steps of the preparation method described in this embodiment are:
[0053] The first step, 50-60wt% magnesia fine powder, 1-5wt% magnesia-aluminum spinel fine powder, 5-10wt% α-Al 2 o 3 Micropowder, 1-5wt% aluminum hydroxide, 5-10wt% aluminum fluoride, 1-10wt% anhydrous magnesium sulfate, 1-5wt% zinc oxide, 1-5wt% dodecylbenzenesulfonic acid Sodium, 1-5wt% fatty alcohol polyoxyethylene ether sodium sulfate, 0.1-1wt% sodium hexametaphosphate and 1-5wt% calcium aluminate cement are mixed to obtain a mixture; and 10-15wt of the mixture is added % water, stirred evenly, poured and molded, cured for 15-20 hours to obtain a solidified green body.
[0054] The second step is to dry the cured body at 90-120°C for 12-16 hours, and then heat-treat it at 1400-1500°C for 5-7 hours to obtain pre-fired material; The material is crushed and sieved to obtain granular material A with a particle si...
Embodiment 3
[0059] A magnesium gas permeable material for a tundish and a preparation method thereof. The steps of the preparation method described in this embodiment are:
[0060] The first step, 40-50wt% magnesia fine powder, 1-5wt% magnesia-aluminum spinel fine powder, 1-5wt% α-Al 2 o 3 Micropowder, 5-10wt% aluminum hydroxide, 5-10wt% aluminum fluoride, 1-10wt% anhydrous magnesium sulfate, 1-5wt% titanium dioxide, 1-5wt% sodium lauryl sulfate, 1 ~5wt% sodium carboxymethylcellulose, 0.1~1wt% sodium tripolyphosphate and 1~5wt% calcium aluminate cement are mixed to obtain a mixture; add 10~15wt% water to the mixture, and stir homogeneous, casting and curing for 15 to 20 hours to obtain a solidified green body.
[0061] The second step is to dry the cured green body at 90-120°C for 15-20 hours, and then heat-treat at 1500-1600°C for 5-7 hours to obtain pre-fired material; The material is crushed and sieved to obtain granular material A with a particle size of less than 0.25 mm and gran...
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com