TWI823758B - Composition of blast furnace mud containing silicon-aluminum oxide mineral powder and method of manufacture - Google Patents
Composition of blast furnace mud containing silicon-aluminum oxide mineral powder and method of manufacture Download PDFInfo
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- 239000000203 mixture Substances 0.000 title claims abstract description 86
- 239000000843 powder Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 7
- 229910052592 oxide mineral Inorganic materials 0.000 title abstract 3
- YAIQCYZCSGLAAN-UHFFFAOYSA-N [Si+4].[O-2].[Al+3] Chemical compound [Si+4].[O-2].[Al+3] YAIQCYZCSGLAAN-UHFFFAOYSA-N 0.000 title 1
- 239000011230 binding agent Substances 0.000 claims abstract description 47
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims abstract description 25
- 229910000314 transition metal oxide Inorganic materials 0.000 claims abstract description 25
- 230000004580 weight loss Effects 0.000 claims abstract description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 118
- 239000002585 base Substances 0.000 claims description 42
- 239000003513 alkali Substances 0.000 claims description 27
- KZNMRPQBBZBTSW-UHFFFAOYSA-N [Au]=O Chemical class [Au]=O KZNMRPQBBZBTSW-UHFFFAOYSA-N 0.000 claims description 25
- 229910001922 gold oxide Inorganic materials 0.000 claims description 25
- 230000000903 blocking effect Effects 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000000377 silicon dioxide Substances 0.000 claims description 19
- 210000000988 bone and bone Anatomy 0.000 claims description 17
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 3
- 229940036811 bone meal Drugs 0.000 claims description 2
- 239000002374 bone meal Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 238000009766 low-temperature sintering Methods 0.000 abstract description 13
- 238000003763 carbonization Methods 0.000 abstract description 7
- 239000011159 matrix material Substances 0.000 abstract description 4
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
- 239000011269 tar Substances 0.000 description 38
- 238000002360 preparation method Methods 0.000 description 27
- 239000004927 clay Substances 0.000 description 18
- 238000005245 sintering Methods 0.000 description 17
- 238000005336 cracking Methods 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010079 rubber tapping Methods 0.000 description 7
- 229910021536 Zeolite Inorganic materials 0.000 description 6
- 229960000892 attapulgite Drugs 0.000 description 6
- 239000000440 bentonite Substances 0.000 description 6
- 229910000278 bentonite Inorganic materials 0.000 description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 6
- 229910052625 palygorskite Inorganic materials 0.000 description 6
- 239000010457 zeolite Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000011280 coal tar Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- CWRYPZZKDGJXCA-UHFFFAOYSA-N acenaphthene Chemical compound C1=CC(CC2)=C3C2=CC=CC3=C1 CWRYPZZKDGJXCA-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HXGDTGSAIMULJN-UHFFFAOYSA-N acetnaphthylene Natural products C1=CC(C=C2)=C3C2=CC=CC3=C1 HXGDTGSAIMULJN-UHFFFAOYSA-N 0.000 description 1
- 239000001068 allium cepa oil Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 1
- 229940092714 benzenesulfonic acid Drugs 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001648 diaspore Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Description
本發明是有關於一種高爐堵泥材組成物，特別是關於一種含矽鋁質粉末的高爐堵泥材組成物及其製造方法。The present invention relates to a blast furnace mud blocking material composition, and in particular to a blast furnace mud blocking material composition containing silica-aluminum powder and a manufacturing method thereof.
為了控制高爐出鐵作業，高爐堵泥材組成物是用以填充出鐵口，以維持出鐵深度，並保護內部出鐵口碳磚。習知高爐堵泥材組成物包含堵泥基材及黏結劑，其中習知堵泥基材包含骨粉材及高鋁矽質黏土。骨粉材可做為骨架組成，黏土粉料可提供高爐堵泥材組成物潤滑性，並維持高爐堵泥材組成物經高溫燒結後的強度，且黏結劑可使得高爐堵泥材組成物具有可塑性。黏結劑可為有機黏結劑，且可包含但不限於焦油及/或樹脂，且使用有機黏結劑所製得之高爐堵泥材組成物具有較佳的強度及/或抗渣性，常用於頂壓較高、強化冶煉程度較高的中大型高爐。In order to control the blast furnace tapping operation, the blast furnace mud material composition is used to fill the tap hole to maintain the tapping depth and protect the internal tap hole carbon bricks. The conventional blast furnace plugging material composition includes a plugging base material and a binder, wherein the conventional plugging base material includes bone powder material and high-aluminum silica clay. The bone powder material can be used as a skeleton component, and the clay powder can provide the lubricity of the blast furnace mud material composition and maintain the strength of the blast furnace mud material composition after high-temperature sintering, and the binder can make the blast furnace mud material composition plastic. . The binder can be an organic binder and can include but is not limited to tar and/or resin. The blast furnace mud composition made by using an organic binder has better strength and/or slag resistance and is often used in roof tops. Medium and large blast furnaces with higher pressure and higher degree of intensive smelting.
出鐵口通道的溫度可達300°C至1500°C。然而，當高爐出鐵口的溫度相對較低(如：350°C至600°C)時，有機黏結劑之熱分解碳化速率偏慢而有堵泥材燒結不佳的問題，不僅提升高爐堵泥材組成物之重量損失，還造成出鐵口通道冒出濃厚黑煙及/或噴出紅熱顆粒，甚至使得出鐵深度及出鐵時間較短，影響出鐵作業。The temperature of the taphole channel can reach 300°C to 1500°C. However, when the temperature of the blast furnace taphole is relatively low (e.g., 350°C to 600°C), the thermal decomposition and carbonization rate of the organic binder is relatively slow, resulting in poor sintering of the plugging material, which not only increases the problem of blast furnace plugging The weight loss of the mud material composition also causes thick black smoke to emit from the taphole channel and/or ejects red hot particles, and even shortens the tapping depth and tapping time, affecting the tapping operation.
有鑑於此，亟需提供一種高爐堵泥材組成物，以解決上述問題。In view of this, there is an urgent need to provide a blast furnace plugging material composition to solve the above problems.
因此，本發明之一樣態是提供一種含矽鋁質粉末的高爐堵泥材組成物，其所用之堵泥基材的二氧化矽含量較高、鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物的總含量較高，且氧化鋁較低，可催化焦油黏結劑的裂解，藉以降低高爐堵泥材組成物經低溫燒結後的重量損失率。Therefore, one aspect of the present invention is to provide a blast furnace mud composition containing silica-aluminum powder. The mud base material used in the mud base material has a relatively high content of silicon dioxide, alkali gold oxides, alkaline earth oxides and transition metal oxides. The total content of metal oxides is high and the alumina is low, which can catalyze the cracking of the tar binder, thereby reducing the weight loss rate of the blast furnace plugging material composition after low-temperature sintering.
本發明之又一態樣是提供一種含矽鋁質粉末的高爐堵泥材組成物的製造方法，以製得具有經低溫燒結後，重量損失率較低之含矽鋁質粉末的高爐堵泥材組成物。Another aspect of the present invention is to provide a method for manufacturing a blast furnace plugging material composition containing silica-aluminum powder, so as to produce a blast furnace plugging mud containing silica-aluminum powder with a low weight loss rate after low-temperature sintering. material composition.
根據本發明之上述態樣，提出一種含矽鋁質粉末的高爐堵泥材組成物，包含堵泥基材及焦油黏結劑，其中基於堵泥基材為100重量份，堵泥基材包含0.2重量份至20重量份的矽鋁質粉末及平衡量的骨粉材，且基於矽鋁質粉末為100 wt%，矽鋁質粉末包含55 wt%至85 wt%的二氧化矽、1.5 wt%至25 wt%的以下成分之至少一者：鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物以及平衡量的氧化鋁。在上述實施例中，焦油黏結劑與堵泥基材的重量比例是10：100至20：100。According to the above aspect of the present invention, a blast furnace mud blocking material composition containing silica-aluminum powder is proposed, which includes a mud blocking base material and a tar binder, wherein based on 100 parts by weight of the mud blocking base material, the mud blocking base material contains 0.2 Parts by weight to 20 parts by weight of silica-aluminum powder and a balance of bone powder materials, and based on 100 wt% of the silica-aluminum powder, the silica-aluminum powder contains 55 wt% to 85 wt% silica, 1.5 wt% to 25 wt% of at least one of the following: alkali gold oxides, alkaline earth oxides, and transition metal oxides and a balancing amount of alumina. In the above embodiment, the weight ratio of tar binder to mud blocking base material is 10:100 to 20:100.
在本發明之一實施例中，二氧化矽的含量為58 wt%至70 wt%。In one embodiment of the present invention, the content of silicon dioxide is 58 wt% to 70 wt%.
在本發明之一實施例中，鹼金族氧化物包含氧化鉀及/或氧化鈉。In one embodiment of the invention, the alkali gold oxide includes potassium oxide and/or sodium oxide.
本發明之一實施例中，鹼金族氧化物之含量係小於5 wt%。In one embodiment of the present invention, the content of alkali gold oxide is less than 5 wt%.
本發明之一實施例中，鹼土族氧化物包含氧化鎂及/或氧化鈣。In one embodiment of the present invention, the alkaline earth oxide includes magnesium oxide and/or calcium oxide.
本發明之一實施例中，過渡金屬氧化物包含氧化鐵及/或氧化亞鐵。In one embodiment of the present invention, the transition metal oxide includes iron oxide and/or ferrous oxide.
本發明之一實施例中，高爐堵泥材組成物經熱處理的重量損失率是小於6 wt%，且熱處理係於350°C至600°C進行2小時至4小時。In one embodiment of the present invention, the weight loss rate of the blast furnace plugging material composition after heat treatment is less than 6 wt%, and the heat treatment is performed at 350°C to 600°C for 2 hours to 4 hours.
本發明之一實施例中，高爐堵泥材組成物經熱處理後之折斷強度是70 kg/cm 2至90 kg/cm 2，其中熱處理是於1200°C至1400°C進行2小時至4小時。 In one embodiment of the present invention, the breaking strength of the blast furnace plugging material composition after heat treatment is 70 kg/cm 2 to 90 kg/cm 2 , wherein the heat treatment is performed at 1200°C to 1400°C for 2 hours to 4 hours. .
本發明之一實施例中，矽鋁質粉末的粒徑是小於或等於0.074 mm。In one embodiment of the present invention, the particle size of the silica-aluminum powder is less than or equal to 0.074 mm.
根據本發明之另一態樣，提出一種高爐堵泥材組成物的製造方法。首先，混合矽鋁質粉末及其他骨粉材，以獲得堵泥基材，其中基於堵泥基材為100重量份，堵泥基材包含0.2重量份至20重量份的矽鋁質粉末及平衡量的骨粉材，且基於矽鋁質粉末為100 wt%，矽鋁質粉末包含55 wt%至85 wt%的二氧化矽、1.5 wt%至25 wt%的以下成分之至少一者：鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物及平衡量的氧化鋁。接著，混練焦油黏結劑及堵泥基材，其中焦油黏結劑與堵泥基材的重量比例是10：100至20：100。According to another aspect of the present invention, a method for manufacturing a blast furnace plugging material composition is provided. First, mix silica-aluminum powder and other bone powder materials to obtain a mud-blocking base material, wherein based on 100 parts by weight of the mud-blocking base material, the mud-blocking base material contains 0.2 to 20 parts by weight of silica-aluminum powder and a balance. The bone powder material is based on 100 wt% silica-aluminum powder. The silica-aluminum powder contains 55 wt% to 85 wt% silica and 1.5 wt% to 25 wt% of at least one of the following components: alkali gold group oxides, alkaline earth oxides and transition metal oxides and a balancing amount of alumina. Next, the tar binder and the mud blocking base material are kneaded, wherein the weight ratio of the tar binder to the mud blocking base material is 10:100 to 20:100.
應用本發明的含矽鋁質粉末的高爐堵泥材組成物及其製造方法，其係藉由使用具特定組成之矽鋁質粉末，藉以催化焦油黏結劑之的裂解，從而提升含矽鋁質粉末的高爐堵泥材組成物的碳化速率及燒結速率，進而降低含矽鋁質粉末的高爐堵泥材組成物之低溫燒結重量損失率。其中，相較於習知高鋁矽質黏土，本發明所使用的矽鋁質粉末具有較高含量的二氧化矽、較低含量的氧化鋁，以及較高總含量的鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物。另外，由於本發明所使用之矽鋁質粉末可具有較高總含量的鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物與較低含量的氧化鋁，因此矽鋁質粉末可使用的種類較多，且成本較低。The blast furnace mud composition containing silica-aluminum powder of the present invention and its manufacturing method are used to catalyze the cracking of the tar binder by using silica-aluminum powder with a specific composition, thereby improving the silica-aluminum content. The carbonization rate and sintering rate of the powdered blast furnace mud material composition are thereby reduced, thereby reducing the low-temperature sintering weight loss rate of the blast furnace mud material composition containing silica-aluminum powder. Among them, compared with conventional high-alumina siliceous clay, the silica-aluminum powder used in the present invention has a higher content of silica, a lower content of alumina, and a higher total content of alkali gold oxides, Alkaline earth oxides and transition metal oxides. In addition, since the silica-aluminum powder used in the present invention can have a higher total content of alkali gold oxides, alkaline earth oxides and transition metal oxides and a lower content of alumina, the silica-aluminum powder can be used There are more varieties and the cost is lower.
以下仔細討論本發明實施例之製造和使用。然而，可以理解的是，實施例提供許多可應用的發明概念，其可實施於各式各樣的特定內容中。所討論之特定實施例僅供說明，並非用以限定本發明之範圍。The making and using of embodiments of the invention are discussed in detail below. It is to be appreciated, however, that the embodiments provide many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are illustrative only and are not intended to limit the scope of the invention.
如前所述，本發明提供一種含矽鋁質粉末的高爐堵泥材組成物及其製造方法，其係使用矽鋁質粉末，其中矽鋁質粉末具有較高含量的氧化矽及較高總含量的鹼金族氧化物、鹼土族氧化物及/或過渡金屬氧化物，可催化焦油黏結劑的裂解，從而提高含該種矽鋁質粉末的高爐堵泥材組成物的低溫碳化速率及燒結速率，並降低含矽鋁質粉末的高爐堵泥材組成物經低溫燒結後的重量損失率。其中，本文所述之「低溫」是指350°C至600°C，「高溫」是指大於600°C至1400°C，如：1200°C至1400°C，且「燒結」是指以相應的溫度進行還原氣氛下之熱處理。As mentioned above, the present invention provides a blast furnace plugging material composition containing silica-aluminum powder and a manufacturing method thereof, which uses silica-aluminum powder, wherein the silica-aluminum powder has a higher content of silicon oxide and a higher total content. The content of alkali gold oxides, alkaline earth oxides and/or transition metal oxides can catalyze the cracking of the tar binder, thereby improving the low-temperature carbonization rate and sintering of the blast furnace plugging material composition containing the silica-aluminum powder. rate, and reduce the weight loss rate of the blast furnace plugging material composition containing silica-aluminum powder after low-temperature sintering. Among them, "low temperature" mentioned in this article refers to 350°C to 600°C, "high temperature" refers to greater than 600°C to 1400°C, such as: 1200°C to 1400°C, and "sintering" refers to Heat treatment is carried out under a reducing atmosphere at the corresponding temperature.
詳細而言，本發明之含矽鋁質粉末的高爐堵泥材組成物包含堵泥基材及焦油黏結劑。前述焦油黏結劑與堵泥基材的重量比例是10：100至20：100，其中如果焦油黏結劑含量過少，所製得之含矽鋁質粉末的高爐堵泥材組成物不易塑型，反之，如果焦油黏結劑含量過多，所製得之高爐堵泥材組成物氣孔率偏高，不具有足量的骨架組成，導致燒結強度不足。Specifically, the silicon-aluminum powder-containing blast furnace mud composition of the present invention includes a mud base material and a tar binder. The weight ratio of the aforementioned tar binder to the mud blocking base material is 10:100 to 20:100. If the tar binder content is too small, the prepared blast furnace mud blocking material composition containing silicon aluminum powder will not be easy to shape, and vice versa. , if the tar binder content is too much, the porosity of the resulting blast furnace plugging material composition will be high and it will not have a sufficient amount of skeleton composition, resulting in insufficient sintering strength.
上述焦油黏結劑可例如為石油化工及/或煤化工的液態產品。在一實施例中，焦油黏結劑可包含焦油，如：煤焦油及/或石油焦油。在一實施例中，焦油黏結劑可選擇性包含粗蔥油、除苊油及/或軟瀝青。在一實施例中，焦油黏結劑可選擇性包含長鏈苯系增塑劑及/或長鏈苯磺酸增塑劑。一般而言，由於焦油黏結劑含有易揮發之物質，故焦油黏結劑在低溫(如：350°C至600°C)熱裂解時易造成碳的逸散，從而降低高爐堵泥材組成物之碳化速率及燒結速率，並提升高爐堵泥材組成物經低溫燒結後之重量損失。The tar binder may be, for example, a liquid product from the petrochemical industry and/or coal chemical industry. In one embodiment, the tar binder may include tar, such as coal tar and/or petroleum tar. In one embodiment, the tar binder may optionally include crude onion oil, acenaphthene oil and/or soft asphalt. In one embodiment, the tar binder may optionally include a long-chain benzene plasticizer and/or a long-chain benzene sulfonic acid plasticizer. Generally speaking, since the tar binder contains volatile substances, the tar binder can easily cause carbon to escape when thermally cracked at low temperatures (such as 350°C to 600°C), thus reducing the composition of the blast furnace mud material. The carbonization rate and sintering rate are increased, and the weight loss of the blast furnace plugging material composition after low-temperature sintering is increased.
為了解決焦油黏結劑在低溫的燒結速率/碳化速率較低之問題，本發明的高爐堵泥材組成物使用具特定組成的堵泥基材。此堵泥基材包含矽鋁質粉末及骨粉材，其中基於堵泥基材為100重量份，堵泥基材包含0.2重量份至20重量份的矽鋁質粉末及平衡量的骨粉材。相較於前述之焦油黏結劑，如果矽鋁質粉末含量過低，後述堵泥基材於低溫對焦油黏結劑之裂解的催化效果不佳，而無法避免焦油黏結劑在低溫具有較低熱裂解速率的缺陷。反之，如果矽鋁質粉末含量過高，過多之矽鋁質粉末將導致基質骨粉材含量較低，骨架組成無法滿足要求，或者於製作成本大幅提升之情況下，於低溫對焦油黏結劑之裂解的催化效果亦未再有顯著的提升。在一實施例中，矽鋁質粉末的粒徑可例如為小於或等於0.074 mm，以使矽鋁質粉末可充填於基質骨粉材間隙中並與骨粉材充分混合。In order to solve the problem of low sintering rate/carbonization rate of tar binder at low temperature, the blast furnace mud blocking material composition of the present invention uses a mud blocking base material with a specific composition. The mud-blocking base material includes silica-aluminum powder and bone powder material. Based on 100 parts by weight of the mud-blocking base material, the mud-blocking base material includes 0.2 to 20 parts by weight of silica-aluminum powder and a balanced amount of bone powder material. Compared with the aforementioned tar binder, if the silica-aluminum powder content is too low, the catalytic effect of the mud plugging base material on the cracking of the tar binder at low temperatures will be poor, and it is unavoidable that the tar binder will have lower thermal cracking at low temperatures. Speed defects. On the contrary, if the content of silica-aluminum powder is too high, too much silica-aluminum powder will result in a low content of matrix bone powder, and the skeleton composition cannot meet the requirements, or the production cost will be greatly increased, and the tar binder will be cracked at low temperature. The catalytic effect has not been significantly improved. In one embodiment, the particle size of the silica-aluminum powder may be, for example, less than or equal to 0.074 mm, so that the silica-aluminum powder can be filled in the gaps of the matrix bone powder material and fully mixed with the bone powder material.
前述之矽鋁質粉末是指相對於習知高鋁質黏土，具有較多鹼金族氧化物、鹼土族氧化物及/或過渡金屬氧化物的矽酸鹽礦物。在一實施例中，鹼金族氧化物可包含但不限於氧化鉀及/或氧化鈉，鹼土族氧化物可包含但不限於氧化鎂及/或氧化鈣，且過渡金屬氧化物包含氧化鐵及/或氧化亞鐵。矽鋁質粉末於低溫可更有效催化焦油黏結劑之裂解，而可避免一般焦油黏結劑於低溫時較低熱分解速率的缺陷。The aforementioned silica-aluminum powder refers to silicate minerals containing more alkali gold oxides, alkaline earth oxides and/or transition metal oxides than conventional high-alumina clays. In one embodiment, the alkali gold oxide may include but is not limited to potassium oxide and/or sodium oxide, the alkaline earth oxide may include but is not limited to magnesium oxide and/or calcium oxide, and the transition metal oxide may include iron oxide and /or ferrous oxide. Silica-aluminum powder can more effectively catalyze the cracking of tar binders at low temperatures, thereby avoiding the shortcomings of lower thermal decomposition rates of general tar binders at low temperatures.
基於矽鋁質粉末為100 wt%，矽鋁質粉末包含鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物的至少一者，且鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物的總含量可為1.5 wt%至25 wt%。如果上述成分過少，矽鋁質粉末對於焦油黏結劑之催化效果不佳，但如果上述成分過多，所製得之含矽鋁質粉末的高爐堵泥材組成物會具有低熔點，導致含過高矽鋁質粉末的高爐堵泥材組成物的抗蝕性變差。在一些實施例中，矽鋁質粉末之鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物的總含量較佳可為5 wt%至20 wt%，且更佳為7.5至18.5。在一些實施例中，鹼金族氧化物之含量可例如為小於5 wt%。Based on 100 wt% of the silica-aluminum powder, the silica-aluminum powder contains at least one of alkali gold oxides, alkaline earth oxides and transition metal oxides, and the alkali gold oxides, alkaline earth oxides and transition metal oxides The total content of materials may range from 1.5 wt% to 25 wt%. If there are too few of the above ingredients, the silica-aluminum powder will not have a good catalytic effect on the tar binder. However, if there are too many of the above-mentioned ingredients, the resulting blast furnace mud composition containing silica-aluminum powder will have a low melting point, resulting in a content that is too high. The corrosion resistance of the blast furnace mud material composition made of silica-aluminum powder deteriorates. In some embodiments, the total content of alkali gold oxides, alkaline earth oxides and transition metal oxides of the silica-aluminum powder is preferably 5 wt% to 20 wt%, and more preferably 7.5 to 18.5. In some embodiments, the content of alkali gold oxides may be, for example, less than 5 wt%.
基於矽鋁質粉末為100 wt%，二氧化矽的含量可例如為55 wt%至85 wt%，較佳可例如為58 wt%至70 wt%。如果二氧化矽的含量過低，矽鋁質粉末對焦油黏結劑的裂解之催化效果不佳。反之，如果二氧化矽的含量過高，矽鋁質粉末不具有足量的鹼金族氧化物、鹼土族氧化物及/或過渡金屬氧化物，矽鋁質粉末對焦油黏結劑的裂解之催化效果不佳。補充說明的是，鹼金族氧化物、鹼土族氧化物及/或過渡金屬氧化物與二氧化矽皆可催化焦油黏結劑之裂解，但相較於二氧化矽，鹼金族氧化物、鹼土族氧化物及/或過渡金屬氧化物對焦油黏結劑之裂解的催化效果更佳。Based on 100 wt% of the silica-aluminum powder, the content of silica can be, for example, 55 wt% to 85 wt%, and preferably, it can be, for example, 58 wt% to 70 wt%. If the content of silica is too low, the catalytic effect of the silica-aluminum powder on the cracking of the tar binder will be poor. On the contrary, if the content of silica is too high, the silica-aluminum powder does not have sufficient amounts of alkali gold oxides, alkaline-earth oxides and/or transition metal oxides, and the silica-aluminum powder will catalyze the cracking of the tar binder. not effectively. It should be added that alkali gold oxides, alkaline earth oxides and/or transition metal oxides and silica can all catalyze the cracking of tar binders, but compared with silica, alkali gold oxides, alkali Earth oxides and/or transition metal oxides have a better catalytic effect on the cracking of tar binders.
本發明之矽鋁質粉末沒有特別之限制，其僅須含有前述含量的二氧化矽，以及前述總含量之鹼金族氧化物、鹼土族氧化物及過渡金屬氧化物即可。在一實施例中，矽鋁質粉末可為一般製造堵泥材不會使用的低品級矽酸鹽類黏土及/或不具黏土屬性的矽酸鹽類物質。上述「低品級」是指鹼金族氧化物、鹼土族氧化物及/或過渡金屬氧化物含量是高於1.5 wt%至25 wt%。在一具體例中，矽鋁質粉末可包含但不限於皂土、凹凸棒石黏土及/或沸石。骨粉材的成分不限，可為習知骨粉材，如：棕剛玉、水鋁石、高鋁質黏土、碳化矽、焦炭、石墨粉等等。The silica-aluminum powder of the present invention is not particularly limited. It only needs to contain the aforementioned content of silica and the aforementioned total content of alkali gold oxides, alkaline earth oxides and transition metal oxides. In one embodiment, the silica-aluminum powder may be a low-grade silicate clay that is not commonly used in the production of cement plugging materials and/or a silicate substance that does not have clay properties. The above-mentioned "low grade" means that the content of alkali gold oxides, alkaline earth oxides and/or transition metal oxides is higher than 1.5 wt% to 25 wt%. In a specific example, the silica-aluminous powder may include, but is not limited to, bentonite, attapulgite clay, and/or zeolite. The composition of the bone powder material is not limited, and can be conventional bone powder materials, such as: brown corundum, diaspore, high alumina clay, silicon carbide, coke, graphite powder, etc.
上述含矽鋁質粉末的高爐堵泥材組成物之製造方法可例如為先混合矽鋁質粉末及骨粉材，以獲得堵泥基材。在一實施例中，矽鋁質粉末及骨粉材可例如為以100 rpm至200 rpm的速率混合達1分鐘至5分鐘，從而混合均勻。然後，混練焦油黏結劑及堵泥基材。在一實施例中，焦油黏結劑及堵泥基材是以混練機進行，且混練的溫度可例如為55°C至80°C。The manufacturing method of the above-mentioned blast furnace mud plugging material composition containing silica-aluminum powder may, for example, first mix silica-aluminum powder and bone powder material to obtain a mud-blocking base material. In one embodiment, the silica-aluminum powder and the bone powder material can be mixed at a speed of 100 rpm to 200 rpm for 1 minute to 5 minutes, so that they are evenly mixed. Then, knead the tar binder and mud blocking base material. In one embodiment, the tar binder and the mud blocking base material are processed using a kneading machine, and the kneading temperature may be, for example, 55°C to 80°C.
本發明之含矽鋁質粉末的高爐堵泥材組成物因為使用矽鋁質粉末，可於低溫下催化焦油黏結劑之裂解，並抑制其汽化，進而可避免高爐堵泥材組成物於低溫燒結時，焦油黏結劑的汽化降低高爐堵泥材組成物質之碳化速率及/或燒結速率，因此可有效降低高爐堵泥材組成物經低溫燒結後的重量損失率。因此，對焦油黏結劑的裂解之催化效果可以含矽鋁質粉末的高爐堵泥材組成物經熱處理後的重量損失率表示。經實驗證實，高爐堵泥材組成物經低溫熱處理之的重量損失率可例如為小於6 wt%，較佳可例如為4 wt%，或者3 wt%，抑或2 wt%，其中低溫熱處理可例如在350°C至600°C之溫度下進行2小時至4小時。Because the silica-aluminum powder-containing blast furnace mud composition of the present invention uses silica powder, it can catalyze the cracking of the tar binder at low temperatures and inhibit its vaporization, thereby preventing the blast furnace mud composition from sintering at low temperatures. During the process, the vaporization of the tar binder reduces the carbonization rate and/or sintering rate of the composition of the blast furnace plugging material, thereby effectively reducing the weight loss rate of the composition of the blast furnace plugging material after low-temperature sintering. Therefore, the catalytic effect on the cracking of the tar binder can be expressed by the weight loss rate of the blast furnace plugging material composition containing silica-aluminum powder after heat treatment. It has been experimentally confirmed that the weight loss rate of the blast furnace plugging material composition after low-temperature heat treatment can be, for example, less than 6 wt%, preferably, it can be, for example, 4 wt%, or 3 wt%, or 2 wt%, wherein the low-temperature heat treatment can be, for example, Carry out at a temperature of 350°C to 600°C for 2 hours to 4 hours.
其次，使用矽鋁質粉末，還可使高爐堵泥材組成物在經高溫燒結後，折斷強度在適當範圍內。本文所述之折斷強度的適當範圍可例如為大於70 kg/cm 2且小於或等於100 kg/cm 3，以確保出鐵口開孔順利。經實驗證實，高爐堵泥材組成物之經高溫熱處理後之折斷強度為70 kg/cm 2至90 kg/cm 2。在上述實施例中，高溫熱處理是在大於600°C至1400°C之溫度下進行2小時至4小時。 Secondly, the use of silica-aluminum powder can also make the breaking strength of the blast furnace plugging material composition within an appropriate range after high-temperature sintering. The appropriate range of the breaking strength described herein may be, for example, greater than 70 kg/cm 2 and less than or equal to 100 kg/cm 3 to ensure smooth opening of the taphole. Experiments have confirmed that the breaking strength of the blast furnace plugging material composition after high-temperature heat treatment is 70 kg/cm 2 to 90 kg/cm 2 . In the above embodiment, the high-temperature heat treatment is performed at a temperature of greater than 600°C to 1400°C for 2 hours to 4 hours.
以下利用數個實施例以說明本發明之應用，然其並非用以限定本發明，本發明技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。 製備例1 Several examples are used below to illustrate the application of the present invention, but they are not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. polish. Preparation Example 1
製備例1以皂土為矽鋁質粉末(粒徑是小於或等於0.074 mm)，添加於骨粉材中，並以高速攪拌機150 rpm混拌1分鐘後，獲得堵泥基材。其中，基於堵泥基材之使用量為100重量份，皂土之添加量6重量份(相當於800 kg的堵泥基材含有48 kg之皂土)。將實施例1之堵泥基材加入80 kg至160 kg的煤焦油黏合劑，並利用混練機以55°C至80°C混練20分鐘至30分鐘後，即可獲得製備例1的高爐堵泥材組成物。製備例1的配方及皂土的化學組成分是記錄於表1中。 製備例2至製備例3 Preparation Example 1: Bentonite is used as silica-aluminum powder (particle diameter is less than or equal to 0.074 mm), added to the bone powder material, and mixed with a high-speed mixer at 150 rpm for 1 minute to obtain a mud blocking base material. Among them, the usage amount of the mud blocking base material is 100 parts by weight, and the addition amount of bentonite is 6 parts by weight (equivalent to 800 kg of mud blocking base material containing 48 kg of bentonite). Add 80 kg to 160 kg of coal tar binder to the mud plugging base material of Example 1, and use a kneader to knead at 55°C to 80°C for 20 to 30 minutes to obtain the blast furnace plugging material of Preparation Example 1. Mud material composition. The formula of Preparation Example 1 and the chemical composition of bentonite are recorded in Table 1. Preparation Example 2 to Preparation Example 3
製備例2及製備例3的配方及製備方法與製備例1相同，差異在於製備例2是以凹凸棒石黏土(粒徑是小於或等於0.074 mm)為矽鋁質粉末，且基於堵泥基材為100重量份，凹凸棒石黏土之添加量15重量份(相當於800 kg的堵泥基材含有120 kg的凹凸棒石黏土)。製備例3是以沸石(粒徑是小於或等於0.074 mm)作為矽鋁質粉末，且基於堵泥基材為100重量份，沸石之添加量2重量份(相當於800 kg的堵泥基材含有16 kg的沸石)。製備例2及製備例3的配方、凹凸棒石黏土及沸石的化學組成分是記錄於表1中。 製備比較例 The formulas and preparation methods of Preparation Example 2 and Preparation Example 3 are the same as Preparation Example 1. The difference is that Preparation Example 2 uses attapulgite clay (particle diameter less than or equal to 0.074 mm) as silica-aluminum powder and is based on a mud-blocking base. The material is 100 parts by weight, and the addition amount of attapulgite clay is 15 parts by weight (equivalent to 800 kg of mud-blocking base material containing 120 kg of attapulgite clay). Preparation Example 3 uses zeolite (particle diameter less than or equal to 0.074 mm) as silica-aluminum powder, and based on 100 parts by weight of the mud-blocking base material, the addition amount of zeolite is 2 parts by weight (equivalent to 800 kg of mud-blocking base material) Contains 16 kg of zeolite). The chemical compositions of the formulas of Preparation Example 2 and Preparation Example 3, attapulgite clay and zeolite are recorded in Table 1. Preparation Comparative Example
製備比較例的配方及製備方法與製備例1相同，差異在於製備比較例以習知高鋁黏土(粒徑是小於或等於0.074 mm)取代矽鋁質粉末，且基於堵泥基材為100重量份，高鋁黏土之添加量為6重量份至12重量份(相當於800 kg的堵泥基材含有48 kg至96 kg的高鋁黏土)。其中，基於高鋁黏土為100 wt%，氧化鋁的含量是大於45 wt%，且鹼金族氧化物、鹼土族氧化物及/或過度金屬氧化物的總含量是小於1.5 wt%。 評估方式 低溫燒結的重量損失率 The formula and preparation method of the comparative example are the same as those of the preparation example 1. The difference is that the conventional high-aluminum clay (particle diameter is less than or equal to 0.074 mm) is used to replace the silica-aluminum powder, and based on the mud plugging base material, the weight is 100 parts, the amount of high-aluminum clay added is 6 to 12 parts by weight (equivalent to 800 kg of mud-blocking base material containing 48 kg to 96 kg of high-aluminum clay). Among them, based on the high alumina clay is 100 wt%, the alumina content is greater than 45 wt%, and the total content of alkali gold oxides, alkaline earth oxides and/or transition metal oxides is less than 1.5 wt%. Assessment method Weight loss rate of low temperature sintering
首先，測量製備例1至製備例3及製備比較例的高爐堵泥材組成物的重量(即未經熱處理的重量)。然後，對上述高爐堵泥材組成物進行低溫熱處理，並於高爐堵泥材組成物冷卻後再次測量其重量(即經熱處理後的重量)，其中低溫熱處理是於400°C下進行3小時。計算高爐堵泥材組成物未經處理後的重量與經熱處理的重量的差值與未經處理後的重量之百分比，以獲得重量損失率。重量損失率的檢測結果是記綠於表1中。 高溫燒結的折斷強度 First, the weight of the blast furnace mud compositions of Preparation Examples 1 to 3 and Preparation Comparative Example was measured (that is, the weight without heat treatment). Then, the above-mentioned blast furnace mud material composition is subjected to low-temperature heat treatment, and the weight of the blast furnace mud material composition is measured again after cooling (i.e., the weight after heat treatment), wherein the low-temperature heat treatment is performed at 400°C for 3 hours. Calculate the difference between the untreated weight and the heat-treated weight of the blast furnace plugging material composition and the percentage of the untreated weight to obtain the weight loss rate. The test results of weight loss rate are recorded in Table 1. High temperature sintering breaking strength
對上述高爐堵泥材組成物進行高溫熱處理，並待高爐堵泥材組成物冷卻後，施加彎曲荷重於高爐堵泥材組成物，直到高爐堵泥材組成物破斷，其中高溫熱處理是於1300°C下進行3小時。計算高爐堵泥材組成物破斷時施加於高爐堵泥材組成物的荷重與高爐堵泥材組成物破斷處的截面積，以獲得彎曲折斷強度。折斷強度的檢測結果是記綠於表1中。The above-mentioned blast furnace mud material composition is subjected to high-temperature heat treatment, and after the blast furnace mud material composition is cooled, a bending load is applied to the blast furnace mud material composition until the blast furnace mud material composition is broken, wherein the high-temperature heat treatment is at 1300 °C for 3 hours. Calculate the load applied to the blast furnace mud material composition when the blast furnace mud material composition breaks and the cross-sectional area of the fracture point of the blast furnace mud material composition to obtain the bending and breaking strength. The test results of breaking strength are recorded in Table 1.
表1
如表1所示，相對於製備比較例，製備例1至製備例3使用之矽鋁質粉末之氧化矽的含量較高且鹼金族氧化物、鹼土族氧化物及過度金屬氧化物的總含量較高，因此製得之高爐堵泥材組成物經低溫燒結後的重量損失率較低。其次，製備例1至製備例3之高爐堵泥材組成物經高溫燒結後的折斷強度與製備比較例之高爐堵泥材組成物經高溫燒結的後折斷強度相當。另，由上述結果可知，使用矽鋁質粉末所得之高爐堵泥材組成物經低溫燒結後的重量損失率確實較低，且經高溫燒結後的折斷強度仍在理想適當的範圍內。As shown in Table 1, compared with the preparation comparative example, the silica-aluminum powder used in preparation examples 1 to 3 has a higher content of silica and the total content of alkali gold oxides, alkaline earth oxides and transition metal oxides. The content is relatively high, so the weight loss rate of the blast furnace plugging material composition after low-temperature sintering is low. Secondly, the breaking strength of the blast furnace plugging material compositions of Preparation Examples 1 to 3 after high-temperature sintering is equivalent to the breaking strength of the blast furnace plugging material composition of Preparation Comparative Example after high-temperature sintering. In addition, it can be seen from the above results that the weight loss rate of the blast furnace plugging material composition obtained by using silica-aluminum powder after low-temperature sintering is indeed low, and the breaking strength after high-temperature sintering is still within an ideal and appropriate range.
由上述實施例可知，本發明之含矽鋁質粉末的高爐堵泥材組成物及其製造方法，其優點在使用矽鋁質粉末，其中矽鋁質粉末之二氧化矽的含量較高，氧化鋁含量較低，且鹼金族氧化物、鹼土族氧化物及過度金屬氧化物的總含量較高，於低溫可催化焦油之裂解，從而降低高爐堵泥材組成物經低溫燒結後的重量損失，進而改善低溫燒結時高爐出鐵口冒黑煙及/或紅熱顆粒噴濺的問題。其次，本發明之高爐堵泥材組成物經高溫燒結後的折斷強度佳，可強化出鐵口通道內部堵泥包之穩定性，而具有穩定出鐵深度及出鐵時機之作用。再者，本發明使用之矽鋁質粉末可具有較高含量的鹼金族氧化物、鹼土族氧化物及過度金屬氧化物，且對氧化鋁的含量之要求較低(如：小於45 wt%)，因此矽鋁質粉末之種類選擇較多且成本較低廉。It can be seen from the above embodiments that the blast furnace mud blocking material composition containing silica-aluminum powder and its manufacturing method of the present invention have the advantage of using silica-aluminum powder, in which the silica-aluminum powder has a high content of silicon dioxide and is oxidized. The aluminum content is low, and the total content of alkali gold oxides, alkaline earth oxides and transition metal oxides is high, which can catalyze the cracking of tar at low temperatures, thereby reducing the weight loss of the blast furnace plugging material composition after low-temperature sintering. , thereby improving the problems of black smoke and/or red-hot particles splashing from the blast furnace taphole during low-temperature sintering. Secondly, the blast furnace mud blocking material composition of the present invention has good breaking strength after high-temperature sintering, which can strengthen the stability of the mud plugging bag inside the taphole channel, and has the function of stabilizing the tapping depth and tapping timing. Furthermore, the silica-aluminum powder used in the present invention can have a higher content of alkali gold oxides, alkaline earth oxides and transition metal oxides, and has lower requirements for the content of alumina (such as less than 45 wt%). ), so there are more types of silica-aluminum powder to choose from and the cost is lower.
雖然本發明已以數個特定實施例揭露如上，但可對前述揭露內容進行各種潤飾、各種更動及替換，而且應可理解的是，在不脫離本發明之精神和範圍內，某些情況將採用本發明實施例之某些特徵但不對應使用其他特徵。因此，本發明的精神和權利要求範圍不應限於以上例示實施例所述。Although the present invention has been disclosed above in terms of several specific embodiments, various modifications, changes and substitutions may be made to the foregoing disclosure, and it should be understood that, in some cases, without departing from the spirit and scope of the present invention, Certain features of embodiments of the invention may be employed without corresponding use of other features. Therefore, the spirit and scope of the claims of the present invention should not be limited to the above illustrated embodiments.
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| TW201412678A (en) * | 2012-09-27 | 2014-04-01 | China Steel Corp | Method for manufacturing tap hole clay for blast furnace |
| WO2014139335A1 (en) * | 2013-03-14 | 2014-09-18 | Hu Changchun | Process for non-slag production of iron, aluminum and titanium by using reduction molten-salt method |
| CN111518976A (en) * | 2020-06-12 | 2020-08-11 | 山东煜龙环保科技股份有限公司 | Method for producing ferro-silico-aluminum alloy by using low-grade iron ore powder |
| CN111809061A (en) * | 2020-07-22 | 2020-10-23 | 攀枝花学院 | Method for smelting titanium-silicon-aluminum intermediate alloy by reducing titanium-containing blast furnace slag with atmosphere protection aluminum |
| US20210079488A1 (en) * | 2019-08-06 | 2021-03-18 | Red Mud Enterprises Llc | System for processing red mud and method of processing red mud |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201412678A (en) * | 2012-09-27 | 2014-04-01 | China Steel Corp | Method for manufacturing tap hole clay for blast furnace |
| WO2014139335A1 (en) * | 2013-03-14 | 2014-09-18 | Hu Changchun | Process for non-slag production of iron, aluminum and titanium by using reduction molten-salt method |
| US20210079488A1 (en) * | 2019-08-06 | 2021-03-18 | Red Mud Enterprises Llc | System for processing red mud and method of processing red mud |
| CN111518976A (en) * | 2020-06-12 | 2020-08-11 | 山东煜龙环保科技股份有限公司 | Method for producing ferro-silico-aluminum alloy by using low-grade iron ore powder |
| CN111809061A (en) * | 2020-07-22 | 2020-10-23 | 攀枝花学院 | Method for smelting titanium-silicon-aluminum intermediate alloy by reducing titanium-containing blast furnace slag with atmosphere protection aluminum |
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