CN116332662A - Boron-free siliceous dry material - Google Patents
Boron-free siliceous dry material Download PDFInfo
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- CN116332662A CN116332662A CN202310440146.7A CN202310440146A CN116332662A CN 116332662 A CN116332662 A CN 116332662A CN 202310440146 A CN202310440146 A CN 202310440146A CN 116332662 A CN116332662 A CN 116332662A
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- fluoride
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- silica
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- 239000000463 material Substances 0.000 title claims abstract description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 20
- 239000005350 fused silica glass Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 229910052586 apatite Inorganic materials 0.000 claims description 4
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 claims description 4
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 4
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 4
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 claims description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 239000000378 calcium silicate Substances 0.000 claims description 3
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
- BYMUNNMMXKDFEZ-UHFFFAOYSA-K trifluorolanthanum Chemical compound F[La](F)F BYMUNNMMXKDFEZ-UHFFFAOYSA-K 0.000 claims description 3
- OMQSJNWFFJOIMO-UHFFFAOYSA-J zirconium tetrafluoride Chemical compound F[Zr](F)(F)F OMQSJNWFFJOIMO-UHFFFAOYSA-J 0.000 claims description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000391 magnesium silicate Substances 0.000 claims description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 2
- 235000019792 magnesium silicate Nutrition 0.000 claims description 2
- FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 claims description 2
- 229910001637 strontium fluoride Inorganic materials 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052796 boron Inorganic materials 0.000 abstract description 10
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004327 boric acid Substances 0.000 abstract description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract description 2
- 150000001639 boron compounds Chemical class 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000005245 sintering Methods 0.000 description 7
- 230000006698 induction Effects 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- C04B2235/3427—Silicates other than clay, e.g. water glass
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Abstract
The invention discloses a boron-free siliceous dry material, which comprises the following raw materials in percentage by weight: 60 to 70 weight percent of silica with the granularity of 8 to 0mm, 5 to 15 weight percent of fused quartz with the granularity of 1 to 0.074mm, 10 to 20 weight percent of silica fine powder with the granularity of less than 0.074mm, 0.5 to 2 weight percent of fluoride with the granularity of less than 0.074mm and 0.5 to 3 weight percent of additive. According to the boron-free siliceous dry material, fluoride powder and an additive are added, so that the dry material can be well sintered under the condition of not adding boric anhydride or boric acid or other boron compounds, and the performance of the boron-containing siliceous dry material is achieved, and the boron-free siliceous dry material has the characteristics of low cost and long service life.
Description
Technical Field
The invention belongs to the field of refractory materials, and mainly relates to a boron-free siliceous dry material.
Background
At present, the siliceous dry material for the domestic intermediate frequency induction furnace is widely used as a furnace lining material for the intermediate frequency induction furnace in the fields of cast steel, cast iron or other colors due to low price and long service life; the siliceous dry material mainly takes boric acid or boric anhydride or other borates as sintering agents, and the main effect of adding boron or boron-containing compounds is that: (1) liquid phase occurs at lower temperature, facilitating sintering; (2) The volume stability of the material is controlled, and the reduction of the service life of the material due to the generation of large cracks is avoided; (3) improving the sintering strength of the furnace lining material.
The action of boron in steel is (1) to improve the hardenability of the steel. (2) improving the high-temperature strength of the steel and strengthening the action of grain boundaries. However, the incorporation of very small amounts of boron in certain specific steel grades can reduce the plasticity and toughness of the steel, especially the toughness can be greatly reduced. Therefore, it is necessary to make the lining material of the induction furnace boron-free when smelting these special grades.
Disclosure of Invention
The invention aims to solve the problems that the boron is increased in molten steel and the plasticity and toughness of steel are reduced due to the boron contained in a refractory lining material of special steel smelted by an induction furnace, and provides a boron-free siliceous dry material with low cost and long service life.
The invention adopts the following technical scheme for accomplishing the purposes:
the dry material without boron and silicon is prepared by taking silica and fused quartz as main raw materials, adding fluoride fine powder and an additive, wherein the raw materials comprise the following components in percentage by weight: 60 to 70 weight percent of silica with the granularity of 8 to 0mm, 5 to 15 weight percent of fused quartz with the granularity of 1 to 0.074mm, 10 to 20 weight percent of silica fine powder with the granularity of less than 0.074mm, 0.5 to 2 weight percent of fluoride with the granularity of less than 0.045mm and 0.5 to 3 weight percent of additive; the raw materials are sequentially put into a forced mixer to be mixed uniformly, and the boron-free siliceous dry material can be prepared.
The chemical component of the silica is SiO 2 ≥98%，Al 2 O 3 ＜0.5%，Fe 2 O 3 Less than 0.6 percent, caO+MgO less than 0.4 percent; the chemical composition of the fused silica is SiO 2 ≥99.8%。
The fluoride is one or more of calcium fluoride, magnesium fluoride, barium fluoride, zinc fluoride, strontium fluoride, aluminum fluoride, lanthanum fluoride and zirconium fluoride, and plays a role in promoting sintering.
The additive is one or more of calcium silicate, zirconium silicate, magnesium silicate, rutile, apatite, iron oxide red and chromite, and plays a role in assisting sintering.
Compared with the prior art, the boron-free siliceous dry material provided by the invention has the innovation points that:
(1) The siliceous dry material does not contain boron or boron-containing compounds, and provides a furnace lining material with low cost and long service life for smelting special steel in an intermediate frequency induction furnace.
(2) The invention promotes the sintering of the siliceous dry material by adding fluoride.
(3) The additive selected by the invention is used for assisting in promoting the sintering of the siliceous dry material, so that the strength of the dry material can be improved, and the expansion of the dry material can be controlled.
Description of the embodiments
The following examples further illustrate the technical aspects of the present invention, but are not intended to limit the scope of the present invention.
Examples
8-0 mm of silica 70%,
1 to 0.074mm 12 percent of fused quartz,
silica powder 0.053mm 13.2%,
0.045mm 0.8% calcium fluoride,
0.045mm 1.2% of magnesium fluoride,
zirconium silicate 0.013mm 1.6%,
apatite 0.045mm 1.2%.
The boron-free siliceous dry material produced according to the proportion is prepared by taking out a part of samples, preparing (phi 100 x 100) mm cylindrical samples, and measuring the line change of the cylindrical samples after burning in an electric furnace at 1600 x 3 hours: 8.12%.
Examples
8-0 mm of silica 70%,
1 to 0.074mm 15 percent of fused quartz,
silica powder 0.053mm 11.1%,
zinc fluoride 0.045mm 1%,
barium fluoride 0.045mm 1%,
0.045mm 1.2% calcium silicate,
iron oxide red 0.013mm 0.7%.
The boron-free siliceous dry material produced according to the proportion is prepared by taking out a part of samples, preparing (phi 100 x 100) mm cylindrical samples, and measuring the line change of the cylindrical samples after burning in an electric furnace at 1600 x 3 hours: 6.79%.
Examples
8-0 mm 67% of silica,
1 to 0.074mm 13 percent of fused quartz,
silica powder 0.053mm 15.5%,
barium fluoride 0.045mm 1.5%,
zirconium silicate 0.013mm 2%,
rutile 0.045mm 1%.
The boron-free siliceous dry material produced according to the proportion is prepared by taking out a part of samples, preparing (phi 100 x 100) mm cylindrical samples, and measuring the line change of the cylindrical samples after burning in an electric furnace at 1600 x 3 hours: 7.78%.
Examples
8-0 mm of silica 70%,
1 to 0.074mm 10 percent of fused quartz,
silica powder 0.053mm 16.5%,
lanthanum fluoride 0.045mm 1.3%,
0.045mm 0.7% of aluminum fluoride,
0.045mm 1.5% chromite.
The boron-free siliceous dry material produced according to the proportion is prepared by taking out a part of samples, preparing (phi 100 x 100) mm cylindrical samples, and measuring the line change of the cylindrical samples after burning in an electric furnace at 1600 x 3 hours: 6.21%.
Examples
8-0 mm of silica and 62 percent,
1 to 0.074mm 14 percent of fused quartz,
silica powder 0.053mm 19.8%,
zirconium fluoride 0.045mm 1.7%,
apatite 0.045mm 1.5%,
rutile 0.045mm 1%.
The boron-free siliceous dry material produced according to the proportion is prepared by taking out a part of samples, preparing (phi 100 x 100) mm cylindrical samples, and measuring the line change of the cylindrical samples after burning in an electric furnace at 1600 x 3 hours: 8.28%.
Claims (4)
1. A boron-free siliceous dry material is characterized in that: silica and fused quartz are taken as main raw materials, fluoride fine powder and an additive are added, and the adopted raw materials comprise the following components in percentage by weight: 60 to 70 weight percent of silica with the granularity of 8 to 0mm, 5 to 15 weight percent of fused quartz with the granularity of 1 to 0.074mm, 10 to 20 weight percent of silica fine powder with the granularity of less than 0.074mm, 0.5 to 2 weight percent of fluoride with the granularity of less than 0.045mm and 0.5 to 3 weight percent of additive; the raw materials are sequentially put into a forced mixer to be mixed uniformly, and the boron-free siliceous dry material can be prepared.
2. The boron-free siliceous dry mix of claim 1, wherein: the chemical component of the silica in the raw materials is SiO 2 ≥98%，Al 2 O 3 ＜0.5%，Fe 2 O 3 Less than 0.6 percent, caO+MgO less than 0.4 percent; the chemical composition of the fused silica is SiO 2 ≥99.8%。
3. The boron-free siliceous dry mix of claim 1, wherein: the fluoride is one or more of calcium fluoride, magnesium fluoride, barium fluoride, zinc fluoride, strontium fluoride, aluminum fluoride, lanthanum fluoride and zirconium fluoride.
4. The boron-free siliceous dry mix of claim 1, wherein: the additive is one or more of calcium silicate, zirconium silicate, magnesium silicate, rutile, apatite, iron oxide red and chromite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310440146.7A CN116332662A (en) | 2023-04-23 | 2023-04-23 | Boron-free siliceous dry material |
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| CN202310440146.7A CN116332662A (en) | 2023-04-23 | 2023-04-23 | Boron-free siliceous dry material |
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| CN202310440146.7A Pending CN116332662A (en) | 2023-04-23 | 2023-04-23 | Boron-free siliceous dry material |
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