CN116023047A - Calcium aluminate cement raw material taking ferrotitanium slag as main material and preparation method thereof - Google Patents
Calcium aluminate cement raw material taking ferrotitanium slag as main material and preparation method thereof Download PDFInfo
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- CN116023047A CN116023047A CN202111253588.8A CN202111253588A CN116023047A CN 116023047 A CN116023047 A CN 116023047A CN 202111253588 A CN202111253588 A CN 202111253588A CN 116023047 A CN116023047 A CN 116023047A
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- China
- Prior art keywords
- slag
- ferrotitanium
- aluminate cement
- calcium aluminate
- raw material
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002893 slag Substances 0.000 title claims abstract description 78
- 229910001200 Ferrotitanium Inorganic materials 0.000 title claims abstract description 54
- 239000002994 raw material Substances 0.000 title claims abstract description 45
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000004568 cement Substances 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 52
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 26
- 239000000292 calcium oxide Substances 0.000 claims abstract description 26
- IXQWNVPHFNLUGD-UHFFFAOYSA-N iron titanium Chemical compound [Ti].[Fe] IXQWNVPHFNLUGD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 8
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000020169 heat generation Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000010936 titanium Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- -1 calcium titanate aluminate Chemical class 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a calcium aluminate cement raw material taking titanium-iron slag as a main material and a preparation method thereof, wherein the calcium aluminate cement raw material comprises Al with a certain component ratio 2 O 3 、TiO 2 、CaO、MgO、Fe 2 O 3 And SiO 2 . When slag is discharged in the production process of ferrotitanium smelting, molten ferrotitanium slag is directly discharged into an adjacent electric furnace; adding quicklime accounting for 25-40 wt% of the slag amount according to the ferrotitanium slag amount, heating an electric furnace to a certain temperature, and preserving heat, wherein the quicklime fully reacts with ferrotitanium slag; blowing out ferrotitanium slag in a molten state, cooling and crushing the ferrotitanium slag into powder, thus obtaining the calcium aluminate cement raw material taking the ferrotitanium slag as a main material. The aluminumThe calcium aluminate cement raw material and the preparation method thereof have the advantages of energy conservation, environmental protection, low cost, stable components, high bonding strength, low heat generation and the like, can replace part of pure calcium aluminate cement in a refractory castable system, are suitable for being used as refractory raw materials, and have simple preparation process.
Description
Technical Field
The invention relates to the technical field of industrial waste recycling, in particular to a calcium aluminate cement raw material taking ferrotitanium slag as a main material and a preparation method thereof.
Background
The titanium iron slag is waste slag generated when ferrotitanium alloy is smelted by an aluminothermic method, is mainly used as secondary ore to recycle titanium and aluminum, or is used for building material ingredients, or is used for replacing traditional alumina raw materials in the refractory material industry after processing, and has low utilization value. The appearance of the ferrotitanium slag is black or dark brown solid, has high hardness and bright section, is similar to black SiC, is stable under natural conditions, and does not react with air and water. The titanium iron slag also contains partial metal simple substance titanium and ferric oxide, and the titanium iron slag can be directly used as a raw material of a refractory material without treatment, but in actual use, the volume expansion is large at 1400 ℃, weight gain can occur, and the high-temperature service performance of the material is reduced. Therefore, it is necessary to treat the calcium titanate aluminate as a refractory raw material in the recovery of the titanium slag, and to reduce the impurity and the low-melting content.
Chinese patent document CN1554778A discloses a low-titanium calcium aluminate and a preparation method thereof, which adopts industrial alumina and byproducts thereof, calcite or limestone, fluorite and feldspar as raw materials, and prepares the low-titanium calcium aluminate through crushing, mixing, melting, cooling, crushing and screening, wherein the material is used for replacing low-grade bauxite raw materials and has no good utilization value.
Disclosure of Invention
The invention aims to solve the technical problem of providing the calcium aluminate cement raw material taking the ferrotitanium slag as the main material and the preparation method thereof, and the calcium aluminate cement raw material and the preparation method thereof have the advantages of energy conservation, environmental protection, low cost, stable components, high bonding strength, low heat generation and the like, can replace part of pure calcium aluminate cement in a refractory castable system, are suitable for being used as refractory raw materials, and have simple preparation process.
In order to solve the technical problems, the calcium aluminate cement raw material taking the titanium iron slag as the main material comprises 50.0 to 58.0 weight percent of Al 2 O 3 、7.0～9.5wt% TiO 2 、32.0～38.0wt%CaO、1～2wt%MgO、0～0.5wt% Fe 2 O 3 And 0 to 1wt% SiO 2 。
Further, the phase composition of the raw materials is calcium monoaluminate, calcium dialuminate and calcium titanate, and part of the glass phase.
The preparation method of the calcium aluminate cement raw material taking the titanium iron slag as the main material comprises the following steps:
step one, directly discharging molten ferrotitanium slag into an adjacent electric furnace when slag is discharged in the production of ferrotitanium in the smelting process;
adding quicklime accounting for 25-40 wt% of the slag amount according to the ferrotitanium slag amount, heating to 1350-1450 ℃ in an electric furnace, and preserving heat for 30-60 minutes to fully react the quicklime with the ferrotitanium slag;
blowing out the ferrotitanium slag in a molten state, cooling, and crushing into powder with the particle size of below 200 meshes to obtain the calcium aluminate cement raw material taking the ferrotitanium slag as a main material.
Further, the ferrotitanium slag component comprises 70.0 to 80.0 weight percent of Al 2 O 3 、10.0～15.0 wt % TiO 2 、8.0～12.0 wt %CaO、1～2.5 wt %MgO、0～0.5 wt % Fe 2 O 3 And 0 to 0.5. 0.5 wt% SiO 2 。
Further, the mass percentage of CaO in the quicklime added in the second step is 90.0-95.0%.
Because the calcium aluminate cement raw material taking ferrotitanium slag as the main material and the preparation method thereof adopt the technical proposal, the calcium aluminate cement raw material comprises 50.0 to 58.0 weight percent of Al 2 O 3 、7.0～9.5wt% TiO 2 、32.0～38.0wt%CaO、1～2wt%MgO、0～0.5wt% Fe 2 O 3 And 0 to 1wt% SiO 2 . When slag is discharged in the production process of ferrotitanium smelting, molten ferrotitanium slag is directly discharged into an adjacent electric furnace; adding quicklime accounting for 25-40 wt% of the slag amount according to the ferrotitanium slag amount, heating to 1350-1450 ℃ in an electric furnace, and preserving heat for 30-60 minutes to fully react the quicklime with ferrotitanium slag; blowing out ferrotitanium slag in a molten state, cooling and crushing the ferrotitanium slag into powder with the particle size of below 200 meshes to obtain the calcium aluminate cement raw material taking the ferrotitanium slag as a main material. The calcium aluminate waterThe mud raw material and the preparation method thereof have the advantages of energy conservation, environmental protection, low cost, stable components, high bonding strength, low heat generation and the like, can replace part of pure calcium aluminate cement in a refractory castable system, are suitable for being used as refractory raw materials, and have simple preparation process.
Detailed Description
The calcium aluminate cement raw material taking the titanium-iron slag as the main material comprises 50.0 to 58.0 weight percent of Al 2 O 3 、7.0～9.5wt% TiO 2 、32.0～38.0wt%CaO、1～2wt%MgO、0～0.5wt% Fe 2 O 3 And 0 to 1wt% SiO 2 。
Preferably, the phase composition of the feedstock is calcium monoaluminate, calcium dialuminate and calcium titanate, and a part of the glass phase.
The preparation method of the calcium aluminate cement raw material taking the titanium iron slag as the main material comprises the following steps:
step one, directly discharging molten ferrotitanium slag into an adjacent electric furnace when slag is discharged in the production of ferrotitanium in the smelting process;
adding quicklime accounting for 25-40 wt% of the slag amount according to the ferrotitanium slag amount, heating to 1350-1450 ℃ in an electric furnace, and preserving heat for 30-60 minutes to fully react the quicklime with the ferrotitanium slag;
blowing out the ferrotitanium slag in a molten state, cooling, and crushing into powder with the particle size of below 200 meshes to obtain the calcium aluminate cement raw material taking the ferrotitanium slag as a main material.
Preferably, the ferrotitanium slag component comprises 70.0 to 80.0 weight percent of Al 2 O 3 、10.0～15.0 wt % TiO 2 、8.0～12.0 wt %CaO、1～2.5 wt %MgO、0～0.5 wt % Fe 2 O 3 And 0 to 0.5. 0.5 wt% SiO 2 。
Preferably, the mass percentage of CaO in the quicklime added in the second step is 90.0-95.0%.
In example 1, when ferrotitanium alloy is smelted to produce slag, molten ferrotitanium slag is directly discharged into an adjacent electric furnace, quicklime accounting for 30wt% of the slag is added according to the slag amount, the slag is heated to 1380 ℃ by the electric furnace, the temperature is kept for 30 minutes, ferrotitanium slag in a molten state is blown out, and the ferrotitanium slag is crushed into powder with the particle size of less than 200 meshes after cooling, so that the calcium aluminate cement raw material taking the ferrotitanium slag as a main material is obtained. The phase composition of the raw material is mainly calcium monoaluminate, calcium dialuminate and calcium titanate through X-ray diffraction analysis. The calcium monoaluminate and the calcium dialuminate in the composition of the raw material phase are the composition of the pure calcium aluminate cement.
In example 2, when ferrotitanium alloy is smelted to produce slag, molten ferrotitanium slag is directly discharged into an adjacent electric furnace, quicklime accounting for 34wt% of the slag is added according to the slag amount, the electric furnace is used for heating, the temperature is kept at 1400 ℃ for 45 minutes, ferrotitanium slag in a molten state is blown out, and the ferrotitanium slag is crushed into powder with the particle size of less than 200 meshes after cooling, so that the calcium aluminate cement raw material taking the ferrotitanium slag as a main material is obtained. The phase composition of the raw material is mainly calcium monoaluminate, calcium dialuminate and calcium titanate through X-ray diffraction analysis. The calcium monoaluminate and the calcium dialuminate in the composition of the raw material phase are the composition of the pure calcium aluminate cement.
The method for preparing the calcium aluminate cement raw material by taking the titanium iron slag as the main material fully utilizes the latent heat of the slag, has low preparation cost, and the calcium aluminate cement raw material prepared by electric melting has the advantages of stable components, high bonding strength, low heat generation and the like, can replace part of expensive pure calcium aluminate cement in a refractory castable system, and is suitable for being used as a refractory raw material.
Claims (5)
1. A calcium aluminate cement raw material taking ferrotitanium slag as a main material is characterized in that: the raw materials comprise 50.0 to 58.0 weight percent of Al 2 O 3 、7.0～9.5wt% TiO 2 、32.0～38.0wt%CaO、1～2wt%MgO、0～0.5wt% Fe 2 O 3 And 0 to 1wt% SiO 2 。
2. The calcium aluminate cement raw material using titanium-iron slag as a main material according to claim 1, wherein: the phase composition of the raw materials comprises calcium monoaluminate, calcium dialuminate and calcium titanate and part of glass phase.
3. A method for preparing the calcium aluminate cement raw material taking the ferrotitanium slag as the main material according to claim 1 or 2, which is characterized by comprising the following steps:
step one, directly discharging molten ferrotitanium slag into an adjacent electric furnace when slag is discharged in the production of ferrotitanium in the smelting process;
adding quicklime accounting for 25-40 wt% of the slag amount according to the ferrotitanium slag amount, heating to 1350-1450 ℃ in an electric furnace, and preserving heat for 30-60 minutes to fully react the quicklime with the ferrotitanium slag;
blowing out the ferrotitanium slag in a molten state, cooling, and crushing into powder with the particle size of below 200 meshes to obtain the calcium aluminate cement raw material taking the ferrotitanium slag as a main material.
4. The method for preparing the calcium aluminate cement raw material with the titanium iron slag as the main material according to claim 3, wherein the method comprises the following steps: the ferrotitanium slag component comprises 70.0 to 80.0 weight percent of Al 2 O 3 、10.0～15.0 wt % TiO 2 、8.0～12.0 wt %CaO、1～2.5 wt %MgO、0～0.5 wt % Fe 2 O 3 And 0 to 0.5. 0.5 wt% SiO 2 。
5. The method for preparing the calcium aluminate cement raw material with the titanium iron slag as the main material according to claim 3, wherein the method comprises the following steps: the mass percentage of CaO content in the quicklime added in the second step is 90.0-95.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253588.8A CN116023047A (en) | 2021-10-27 | 2021-10-27 | Calcium aluminate cement raw material taking ferrotitanium slag as main material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253588.8A CN116023047A (en) | 2021-10-27 | 2021-10-27 | Calcium aluminate cement raw material taking ferrotitanium slag as main material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN116023047A true CN116023047A (en) | 2023-04-28 |
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| CN202111253588.8A Pending CN116023047A (en) | 2021-10-27 | 2021-10-27 | Calcium aluminate cement raw material taking ferrotitanium slag as main material and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB908073A (en) * | 1959-01-26 | 1962-10-17 | Steinwerke Feuerfest Karl Albe | Improvements in the manufacture of refractory alumina cements |
| CN1554778A (en) * | 2003-12-26 | 2004-12-15 | 张延大 | Low-titanium calcium aluminate and its preparing method |
| US20070266902A1 (en) * | 2006-05-16 | 2007-11-22 | Harsco Technologies Corporation | Regenerated calcium aluminate product and process of manufacture |
| CN102923976A (en) * | 2012-11-23 | 2013-02-13 | 攀枝花钢城集团有限公司 | Aluminate cement preparation method |
| CN106904982A (en) * | 2017-03-24 | 2017-06-30 | 武汉科技大学 | High alumina insulating refractory raw material with ferrotianium slag as major ingredient and preparation method thereof |
-
2021
- 2021-10-27 CN CN202111253588.8A patent/CN116023047A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB908073A (en) * | 1959-01-26 | 1962-10-17 | Steinwerke Feuerfest Karl Albe | Improvements in the manufacture of refractory alumina cements |
| CN1554778A (en) * | 2003-12-26 | 2004-12-15 | 张延大 | Low-titanium calcium aluminate and its preparing method |
| US20070266902A1 (en) * | 2006-05-16 | 2007-11-22 | Harsco Technologies Corporation | Regenerated calcium aluminate product and process of manufacture |
| CN102923976A (en) * | 2012-11-23 | 2013-02-13 | 攀枝花钢城集团有限公司 | Aluminate cement preparation method |
| CN106904982A (en) * | 2017-03-24 | 2017-06-30 | 武汉科技大学 | High alumina insulating refractory raw material with ferrotianium slag as major ingredient and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李祖树，徐楚韶，李在妙，周友全: "用高炉钛渣冶炼钛硅合金的研究", 重庆大学学报(自然科学版), no. 04 * |
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