Sillimanite brick for large-scale blast furnace hot blast stove and method of manufacturing the same
The technology of sillimanite and hot blast stove is applied in the field of refractory materials, which can solve the problems of poor thermal shock resistance, decreased performance, low density of silica bricks, etc., and achieves the effects of good performance and high temperature performance improvement and improvement.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0058] Embodiment 1: sillimanite brick for large blast furnace hot blast stove and production method thereof
[0059] The raw materials of sillimanite bricks are: a-Al with a particle size of 3 to 1 mm in weight percentage 2 O 3 40% of base mullite, 45% of high-purity sillimanite with particle size less than 0.5mm, 15% of co-milled powder; additionally added density 1.23g / cm 3 The lignin aqueous solution is used as a binder, and the addition amount accounts for 3% of the total weight of the above-mentioned raw materials.
[0060] The composition of the co-milled powder is as follows: in terms of weight percentage, the particle size is less than or equal to 280 mesh corundum powder 25%, the particle size is less than or equal to 200 mesh andalusite powder 25%, the particle size is less than or equal to 325 mesh zirconia powder 10%; 2 O 3 Micropowder 20%, particle size ≤180 mesh 20% bound clay.
[0061] a-Al in this example 2 O 3 Base mullite, select the fused mullite of M...
Embodiment 2
[0074] Embodiment 2: sillimanite brick for large blast furnace hot blast stove and production method thereof
[0075] The raw materials of sillimanite bricks are: a-Al with a particle size of 3 to 1 mm in weight percentage 2 O 3 35% of base mullite, 55% of high-purity sillimanite with particle size less than 0.5mm, 10% of co-milled powder; additionally added density 1.22g / cm 3 The added amount of lignin aqueous solution accounts for 3% of the total weight of the above-mentioned raw materials.
[0076] The composition of the co-milled powder is as follows: by weight percentage, the particle size is less than or equal to 280 mesh white corundum powder 23%, the particle size is less than or equal to 200 mesh andalusite powder 22%, the particle size is less than or equal to 325 mesh zirconia 6%; the particle size is less than or equal to 625 mesh a-Al 2 O 3 Micropowder 29%, particle size ≤180 mesh bound clay 20%.
[0077] a-Al in this example 2 O 3 The base mullite is select...
Embodiment 3
[0080] Embodiment 3: It is basically the same as Embodiment 1, the difference is:
[0081] The raw material of sillimanite brick is: a-Al 2 O 3 40% of base mullite, 40% of high-purity sillimanite, 20% of co-milled powder; additionally added density 1.24g / cm 3 The added amount of lignin aqueous solution accounts for 5% of the total weight of the above-mentioned raw materials.
[0082] The composition of the co-milled powder is: corundum powder 20%, andalusite powder 25%, zirconia powder 10%; a-Al 2 O 3 Micropowder 25%, bound clay 20%. The particle size requirements of each raw material are the same as in Example 1, and will not be repeated.
[0083] a-Al in this example 2 O 3 The base mullite is selected from the fused mullite of Meihekou in Table 5 and the sintered mullite a produced by Jiangdu, and the ratio of the two is 3:1. Andalusite 2 in Table 7 is selected for the pillar stone powder # .
[0084] The production method is basically the same as Example 1, and th...
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
density | 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