TW201608031A - Method for protecting hearth of blast furnace - Google Patents
Method for protecting hearth of blast furnace Download PDFInfo
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- TW201608031A TW201608031A TW103128833A TW103128833A TW201608031A TW 201608031 A TW201608031 A TW 201608031A TW 103128833 A TW103128833 A TW 103128833A TW 103128833 A TW103128833 A TW 103128833A TW 201608031 A TW201608031 A TW 201608031A
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- blast furnace
- titanium
- hearth
- containing material
- protecting
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- 238000000034 method Methods 0.000 title claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 70
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000010936 titanium Substances 0.000 claims abstract description 68
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 54
- 229910052742 iron Inorganic materials 0.000 claims abstract description 35
- 239000000126 substance Substances 0.000 claims abstract description 22
- 239000004744 fabric Substances 0.000 claims description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 description 17
- 230000003628 erosive effect Effects 0.000 description 8
- 239000000571 coke Substances 0.000 description 7
- 239000011449 brick Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 241000273930 Brevoortia tyrannus Species 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002679 ablation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
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- Manufacture Of Iron (AREA)
Abstract
Description
本發明是有關於一種高爐(Blast Furnace)之保護方法，且特別是有關於一種高爐爐床(Hearth)之保護方法。 The invention relates to a method for protecting a blast furnace (Blast Furnace), and in particular to a method for protecting a blast furnace hearth.
由於高爐大修的費用相當龐大，因此各鋼鐵廠均致力於延長高爐之爐代壽命，以降低生產成本。高爐之爐代壽命主要係取決於高爐內部之耐火磚的殘留厚度。但在高爐運轉期間，爐床與爐底碳磚因長期受到液態鐵渣流動的沖刷、化學熔蝕與熱的作用而會逐漸損耗。由於爐床與爐底碳磚並無法在高爐運轉期間進行修補。也因此爐床與爐底碳磚的殘厚往往成為爐代壽命的主要決定因素。 Due to the considerable cost of blast furnace overhaul, all steel mills are committed to extending the furnace life of the blast furnace to reduce production costs. The furnace life of the blast furnace mainly depends on the residual thickness of the refractory brick inside the blast furnace. However, during the operation of the blast furnace, the hearth and the bottom carbon bricks are gradually lost due to the long-term scouring, chemical ablation and heat of the liquid iron slag. Because the hearth and bottom carbon bricks cannot be repaired during blast furnace operation. Therefore, the residual thickness of the hearth and the carbon bricks at the bottom of the furnace often becomes the main determinant of the life of the furnace.
為延長高爐之爐代壽命，一般的做法是添加含鈦物質，藉以在爐床上形成凝固層。所形成之凝固層具有阻絕作用，可提供爐床有效且持久的保護，且此方法無需降產操作。因此，這樣的方式目前已廣泛地應用在高爐之爐床的保護上。 In order to extend the furnace life of the blast furnace, it is common practice to add a titanium-containing substance to form a solidified layer on the hearth. The resulting solidified layer has a barrier effect that provides effective and long lasting protection of the hearth, and this method does not require a production down operation. Therefore, such a method has been widely applied to the protection of a hearth of a blast furnace.
目前有數種添加鈦物質的方式。舉例而言，在高爐之鼓風嘴內，透過粉煤噴吹與餵線同時操作的快速護爐技術。此技術主要係在高爐鼓風嘴內，利用雙噴槍系統，分 別將粉煤噴吹至高爐之風徑區進行燃燒、以及將含有氧化鈦(TiO2)的包芯線送入高爐內進行爐床保護作業。然而，此技術需額外購置含有氧化鈦的包芯線、以及將包芯線送入鼓風嘴的相關設備，因此不僅會增加製作成本，且在實施上有一定的困難度。 There are currently several ways to add titanium. For example, in the blast furnace nozzle of the blast furnace, the rapid protection technology of the pulverized coal is simultaneously blown with the feeding line. This technology is mainly used in the blast furnace blast nozzle. The double lance system is used to spray the pulverized coal into the wind tunnel area of the blast furnace for combustion, and the core wire containing titanium oxide (TiO 2 ) is sent into the blast furnace for the hearth. Protect the work. However, this technology requires an additional purchase of a core wire containing titanium oxide and a related device for feeding the core wire into the air blowing nozzle, thereby not only increasing the manufacturing cost, but also having a certain degree of difficulty in implementation.
另一種方式則係在高爐爐料中加入含鈦原料。此技術主要係將氧化鈦摻和混入高爐之含鐵原料中。然而，此技術無法控制含氧化鈦原料投入高爐中的位置，因此對於爐床保護的效果不佳。而且，因無法控制含氧化鈦原料投入高爐的位置，因此為了提升爐床保護效果，而增加了氧化鈦原料的添加量。由於鈦的添加會造成渣與鐵水之黏度提高，使鐵水的流動性變差，且黏度高之鐵渣也容易附著在爐蕊(Deadman)之焦碳表面上，而導致爐蕊之透氣性與透液性均變差，因此不僅影響出鐵作業，也會造成爐床汙染。此外，含鈦物質價格高，因此鈦的添加量增加也會導致用料成本的增加。 Another way is to add titanium-containing raw materials to the blast furnace charge. This technology mainly involves mixing and mixing titanium oxide into the iron-containing raw material of the blast furnace. However, this technique cannot control the position where the titanium oxide-containing raw material is put into the blast furnace, and thus the effect on the hearth protection is not good. Further, since the titanium oxide-containing raw material cannot be controlled to be placed in the blast furnace, the amount of the titanium oxide raw material added is increased in order to improve the hearth protection effect. Due to the addition of titanium, the viscosity of the slag and the molten iron is increased, so that the fluidity of the molten iron is deteriorated, and the iron slag having a high viscosity is also likely to adhere to the coke surface of the Deadman, thereby causing the gas of the furnace core to be ventilated. Both the sex and the liquid permeability are deteriorated, so that not only the iron tapping operation but also the hearth pollution is caused. In addition, the price of titanium-containing materials is high, so an increase in the amount of titanium added will also lead to an increase in the cost of materials.
因此，本發明之一目的就是在提供一種高爐爐床之保護方法，其可在不妨礙原本之加料速度下有效率地將含含鈦物質送至高爐爐床之特定侵蝕部位，而在侵蝕部位上形成保護層。因此，可降低爐床溫度，有效保護爐床，進而可延長高爐之爐代壽命。 Accordingly, it is an object of the present invention to provide a method for protecting a blast furnace hearth which can efficiently deliver a titanium-containing material to a specific erosion site of a blast furnace hearth without hampering the original feed rate, and at the erosion site A protective layer is formed on the upper layer. Therefore, the hearth temperature can be lowered, the hearth can be effectively protected, and the furnace life of the blast furnace can be extended.
本發明之另一目的是在提供一種高爐爐床之保護方法，其無需新增高爐之設備，而以現有高爐設備即可有 效控制含鈦物質加入高爐中的位置，因此相較於習知技術，此方法之設備成本低，且含鈦物質之添加量較少，而可大幅降低製程成本。此外，由於含鈦物質可僅局部施加在高爐之特定侵蝕部位，而非全面性施加，且施加量少，因此可有效降低對爐床的汙染。 Another object of the present invention is to provide a method for protecting a blast furnace hearth, which does not require the addition of equipment for the blast furnace, but has the existing blast furnace equipment. The effect of controlling the content of the titanium-containing substance in the blast furnace is controlled, so that the equipment cost of the method is low and the amount of the titanium-containing substance is added less than the conventional technique, and the process cost can be greatly reduced. In addition, since the titanium-containing substance can be locally applied only to a specific erosion portion of the blast furnace, rather than being applied in a comprehensive manner, and the amount applied is small, contamination of the hearth can be effectively reduced.
根據本發明之上述目的，提出一種高爐爐床之保護方法，其包含下列步驟。將含鈦物質置於高爐之佈料倉之出口處，其中佈料倉與高爐之佈料槽連通。將含鐵原料置於佈料倉中，且覆蓋在含鈦物質上。當佈料槽移動至高爐內之預設位置上方時，依序施放佈料倉中之含鈦物質與含鐵原料，其中含鈦物質於高爐內反應而在高爐之爐床位於及/或鄰近預設位置處形成含鈦保護層。 According to the above object of the present invention, a method for protecting a blast furnace hearth is proposed, which comprises the following steps. The titanium-containing material is placed at the exit of the bunker of the blast furnace, wherein the bunker is in communication with the bunker of the blast furnace. The iron-containing material is placed in a cloth silo and covered on a titanium-containing material. When the cloth trough moves above the preset position in the blast furnace, the titanium-containing material and the iron-containing material in the cloth silo are sequentially applied, wherein the titanium-containing material reacts in the blast furnace and is located at and/or adjacent to the hearth of the blast furnace A titanium-containing protective layer is formed at the preset position.
依據本發明之一實施例，上述之佈料倉與佈料槽之間設有流量控制閥，且當佈料槽移動至高爐內之預設位置上方時，開啟流量控制閥。 According to an embodiment of the invention, a flow control valve is disposed between the cloth compartment and the distribution tank, and the flow control valve is opened when the distribution tank moves to a predetermined position in the blast furnace.
依據本發明之另一實施例，上述之含鈦物質包含鈦鐵礦或鈦球結礦。 According to another embodiment of the invention, the titanium-containing material comprises ilmenite or titanium ball ore.
依據本發明之又一實施例，上述之含鈦物質包含二氧化鈦。 According to still another embodiment of the present invention, the titanium-containing material comprises titanium dioxide.
依據本發明之又一實施例，在上述之含鈦物質中，二氧化鈦的含量為31wt%。 According to still another embodiment of the present invention, in the above titanium-containing substance, the content of titanium oxide is 31% by weight.
依據本發明之再一實施例，於依序施放佈料倉中之含鈦物質與含鐵原料之步驟前，上述高爐爐床之保護方法更包含進行溫度偵測步驟，以偵測出高爐內之預設位置。 According to still another embodiment of the present invention, before the step of sequentially applying the titanium-containing material and the iron-containing material in the cloth silo, the protection method of the blast furnace hearth further comprises performing a temperature detecting step to detect the blast furnace The default position.
100‧‧‧高爐 100‧‧‧ blast furnace
102‧‧‧主體 102‧‧‧ Subject
104‧‧‧鼓風嘴 104‧‧‧ blaster
106‧‧‧爐床 106‧‧‧ hearth
108‧‧‧出鐵口 108‧‧‧iron outlet
110‧‧‧佈料倉 110‧‧‧ cloth warehouse
112‧‧‧佈料倉 112‧‧‧ cloth warehouse
114‧‧‧連接管 114‧‧‧Connecting pipe
116‧‧‧連接管 116‧‧‧Connecting tube
118‧‧‧流量控制閥 118‧‧‧Flow control valve
120‧‧‧流量控制閥 120‧‧‧Flow control valve
122‧‧‧佈料槽 122‧‧‧ cloth trough
124‧‧‧含鈦物質 124‧‧‧Titanium-containing substances
126‧‧‧含鐵原料 126‧‧‧iron-containing raw materials
128‧‧‧焦炭 128‧‧‧Coke
130‧‧‧出口 130‧‧‧Export
200‧‧‧保護方法 200‧‧‧Protection method
202‧‧‧步驟 202‧‧‧Steps
204‧‧‧步驟 204‧‧‧Steps
206‧‧‧步驟 206‧‧‧Steps
為讓本發明之上述和其他目的、特徵、優點與實施例能更明顯易懂，所附圖式之說明如下：第1圖係繪示依照本發明之一實施方式的一種高爐的佈料示意圖。 The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; .
第2圖係繪示依照本發明之一實施方式的一種高爐爐床之保護方法的流程圖。 2 is a flow chart showing a method of protecting a blast furnace hearth according to an embodiment of the present invention.
第3圖係繪示應用本發明之一實施方式的一種高爐爐床之保護方法時，含鈦物質的施加與高爐之一出鐵口附近的爐床溫度之變化的關係示意圖。 Fig. 3 is a view showing the relationship between the application of the titanium-containing substance and the change in the temperature of the hearth near the tap hole of one of the blast furnaces when a method for protecting a blast furnace hearth according to an embodiment of the present invention is applied.
請參照第1圖，其係繪示依照本發明之一實施方式的一種高爐的佈料示意圖。一般而言，高爐100係主體架構為鐵殼且內砌耐火材及冷卻系統之中空反應器。在一些例子中，高爐100主要可包含主體102、數個鼓風嘴104、爐床106、二佈料倉110與112、佈料槽122、以及二連接管114與116。鼓風嘴104穿設於主體102之腰部中，爐床106位於主體102內部且位於鼓風嘴104之下方。爐床106及爐底主要由耐火材所構成，其中這些耐火材係以碳磚為主。主體102具有數個出鐵口108，這些出鐵口108穿設在主體102中且鄰近爐床106。 Please refer to FIG. 1 , which is a schematic view showing the cloth of a blast furnace according to an embodiment of the present invention. In general, the blast furnace 100 is a hollow reactor in which the main structure is an iron shell and a refractory material and a cooling system are built therein. In some examples, blast furnace 100 can primarily include a main body 102, a plurality of blowers 104, a hearth 106, two bunkers 110 and 112, a chute 122, and two connecting tubes 114 and 116. The air blowing nozzle 104 is disposed in the waist of the main body 102, and the hearth 106 is located inside the main body 102 and below the air blowing nozzle 104. The hearth 106 and the bottom of the furnace are mainly composed of refractory materials, and these refractory materials are mainly carbon bricks. The body 102 has a plurality of tapholes 108 that are disposed in the body 102 adjacent to the hearth 106.
二佈料倉110與112設於主體102之頂部上方，佈料槽122則設於主體102之頂部之中。佈料倉110可用以 儲放含鐵原料126與含鈦物質124。另一方面，佈料倉112則可用以儲放焦炭128等助熔劑。在一些例子中，佈料槽122可在主體102內沿固定旋轉方向旋轉且可上下移動。連接管114連接佈料倉110與佈料槽122，藉以使得佈料倉110可與佈料槽122連通。另一方面，連接管116連接佈料倉112與佈料槽122，藉以使得佈料倉112可與佈料槽122連通。在一些示範例子中，高爐100包含二流量控制閥118與120。此二流量控制閥118與120分別設置在連接管114與116上。藉由操作流量控制閥118與120，可分別控制佈料倉110與112中所裝載之煉鐵原料排放至佈料槽122而施放於主體102內的量，當然也可控制這些煉鐵原料的排放與否。 The two cloth silos 110 and 112 are disposed above the top of the main body 102, and the fabric trough 122 is disposed in the top of the main body 102. The cloth bin 110 can be used to The iron-containing raw material 126 and the titanium-containing substance 124 are stored. On the other hand, the cloth silo 112 can be used to store a flux such as coke 128. In some examples, the distribution slot 122 can be rotated within the body 102 in a fixed rotational direction and can be moved up and down. The connecting tube 114 connects the cloth silo 110 and the distribution trough 122, so that the fabric silo 110 can communicate with the distribution trough 122. On the other hand, the connecting pipe 116 connects the cloth silo 112 and the distribution chute 122, so that the fabric bin 112 can communicate with the chute 122. In some exemplary examples, blast furnace 100 includes two flow control valves 118 and 120. The two flow control valves 118 and 120 are disposed on the connecting pipes 114 and 116, respectively. By operating the flow control valves 118 and 120, the amount of the ironmaking material loaded in the cloth silos 110 and 112 discharged into the distribution tank 122 and being exerted in the main body 102 can be separately controlled, and of course, the ironmaking raw materials can be controlled. Emissions or not.
請同時參照第2圖，其中第2圖係繪示依照本發明一實施方式的一種高爐之爐床的保護方法的流程圖。在一些實施例中，進行高爐100之爐床106的保護方法200時，可先進行步驟202，將含鈦物質124裝入高爐100之佈料倉110內，並使此含鈦物質124位於佈料倉110之出口130處。在一些例子中，如第1圖所示，含鈦物質124可裝填在佈料倉110底部鄰近出口130處，並可從佈料倉110內部經由出口130而延伸至流動控制閥118上方之連接管114的上部。在一些實施例中，含鈦物質124包含鈦鐵礦。此外，鈦鐵礦可例如包含二氧化鈦。在鈦鐵礦中，二氧化鈦之含量可例如為31wt%。 Please refer to FIG. 2 at the same time, wherein FIG. 2 is a flow chart showing a method for protecting a hearth of a blast furnace according to an embodiment of the present invention. In some embodiments, when the method 200 for protecting the hearth 106 of the blast furnace 100 is performed, step 202 may be first performed to load the titanium-containing material 124 into the cloth silo 110 of the blast furnace 100, and the titanium-containing substance 124 is placed in the cloth. At the exit 130 of the silo 110. In some examples, as shown in FIG. 1, the titanium-containing material 124 can be loaded at the bottom of the fabric bin 110 adjacent the outlet 130 and can extend from the interior of the fabric bin 110 via the outlet 130 to the connection above the flow control valve 118. The upper portion of the tube 114. In some embodiments, the titanium-containing material 124 comprises ilmenite. Further, the ilmenite may, for example, comprise titanium dioxide. In ilmenite, the content of titanium dioxide may be, for example, 31% by weight.
完成含鈦物質124的裝填後，可進行步驟204，將 含鐵原料126裝填於同一佈料倉110內，並使含鐵原料126覆蓋在位於此佈料倉110之出口130處的含鈦物質124上。在佈料倉110中，為了避免過量的鈦添加量影響出鐵作業、汙染爐床106、與造成成本的增加，含鐵原料126之裝填量遠比含鈦物質124多。舉例而言，填入佈料倉110內之含鐵原料126的重量為100噸的情況下，含鈦物質124之重量約為0.5噸。在裝填含鈦物質124與含鐵原料126的同時，可在另一佈料倉112內裝填焦炭128等助熔劑。 After the filling of the titanium-containing material 124 is completed, step 204 may be performed, and The iron-containing material 126 is loaded into the same fabric bin 110 and the iron-containing material 126 is overlaid on the titanium-containing material 124 at the outlet 130 of the fabric bin 110. In the cloth silo 110, in order to avoid excessive titanium addition affecting the tapping operation, contaminating the hearth 106, and causing an increase in cost, the iron-containing raw material 126 is loaded much more than the titanium-containing material 124. For example, in the case where the weight of the iron-containing raw material 126 filled in the cloth silo 110 is 100 tons, the weight of the titanium-containing material 124 is about 0.5 tons. While the titanium-containing material 124 and the iron-containing material 126 are loaded, a flux such as coke 128 may be loaded into the other cloth chamber 112.
在本實施方式中，保護方法200係於高爐100正在進行煉鋼作業時導入。因此，在步驟202前，已有前一批煉鐵原料投入高爐100之主體102內，並已用來進行煉鐵作業。在一些示範例子中，在高爐100運轉期間，可進行溫度偵測步驟，以偵測各出鐵口108附近之爐床106的溫度，藉此可偵測出哪一個或哪些出鐵口108附近之爐床106溫度較高。一般而言，爐床106溫度較高的區域通常表示係因鐵水沖刷、化學熔蝕及/或熱作用而損耗較嚴重的區域。因此，由偵測結果可決定高爐100內欲施加含鈦原料124之預設位置。在其他例子中，亦可根據煉鐵作業之需求，而決定高爐100內欲施加含鈦原料124之預設位置。故，將含鈦物質124與含鐵原料126依序裝入佈料倉110內、以及將焦炭128裝入佈料倉112內之後，可根據先前之煉鐵作業所偵測或所決定之高爐100的預設位置，來進行步驟206，以排放煉鐵原料。 In the present embodiment, the protection method 200 is introduced when the blast furnace 100 is performing a steelmaking operation. Therefore, before step 202, the previous batch of ironmaking raw materials has been put into the main body 102 of the blast furnace 100, and has been used for iron making operations. In some exemplary embodiments, during operation of the blast furnace 100, a temperature sensing step may be performed to detect the temperature of the hearth 106 adjacent each taphole 108, thereby detecting which one or which taps 108 are nearby. The hearth 106 has a higher temperature. In general, the region where the temperature of the hearth 106 is relatively high generally indicates a region where the loss is severe due to molten iron scouring, chemical ablation, and/or heat. Therefore, the preset position of the titanium-containing raw material 124 to be applied in the blast furnace 100 can be determined from the detection result. In other examples, the predetermined position of the titanium-containing material 124 to be applied in the blast furnace 100 may be determined according to the demand of the iron making operation. Therefore, after the titanium-containing material 124 and the iron-containing material 126 are sequentially loaded into the cloth silo 110, and the coke 128 is loaded into the fabric silo 112, the blast furnace can be detected or determined according to the previous iron making operation. At a preset position of 100, step 206 is performed to discharge the ironmaking raw material.
在步驟206中，當監控到在主體102內沿固定旋轉 方向之佈料槽122移動至高爐100內之此一預設位置上方時，打開佈料倉110來排放佈料倉110內之煉鐵原料。在高爐100設有流量控制閥118的例子中，藉由開啟流量控制閥118來打開佈料倉110，以進行佈料倉110內之煉鐵原料的排放作業。由於含鈦物質124係裝填在佈料倉110之開口130處，而含鐵原料126係覆蓋在含鈦物質124上，因此打開佈料倉110時來排放煉鐵原料時，含鈦物質124會先經由連接管114排出而由佈料槽122投入高爐100之主體102內之預設位置處及/或鄰近區域，而後原本覆蓋在含鈦原料124上的含鐵原料126才會掉落在主體102內。另一方面，完成此批含鈦物質124與含鐵原料126的投入後，開啟流量控制閥120，使佈料倉112內之焦炭128經由連接管116排出而由佈料槽122投入高爐100之主體102內。 In step 206, when a fixed rotation is detected within the body 102 When the direction of the cloth groove 122 moves above the predetermined position in the blast furnace 100, the cloth compartment 110 is opened to discharge the ironmaking material in the cloth compartment 110. In the example in which the blast furnace 100 is provided with the flow control valve 118, the flotation silo 110 is opened by opening the flow control valve 118 to perform the discharge operation of the ironmaking raw material in the silo chamber 110. Since the titanium-containing material 124 is filled in the opening 130 of the cloth silo 110, and the iron-containing material 126 is covered on the titanium-containing material 124, when the silo material 110 is opened to discharge the iron-making material, the titanium-containing substance 124 First, it is discharged through the connecting pipe 114 and is introduced into the preset position and/or the adjacent area in the main body 102 of the blast furnace 100 by the distribution tank 122, and then the iron-containing raw material 126 originally covering the titanium-containing raw material 124 is dropped on the main body. 102. On the other hand, after the input of the batch of the titanium-containing material 124 and the iron-containing material 126 is completed, the flow control valve 120 is opened, and the coke 128 in the cloth silo 112 is discharged through the connection pipe 116 and is introduced into the blast furnace 100 by the distribution tank 122. Inside the body 102.
當含鈦物質124、含鐵原料126、與焦炭128等煉鐵原料自高爐100之爐頂的佈料槽122投入後，在主體102內下降的過程，與來自主體102之腰部的鼓風嘴104所導入的熱風進行熱交換與還原反應，產出的鐵水與爐渣流入位於鼓風嘴104以下之空間即所謂的爐床106，再由出鐵口108流出爐外。 When the iron-containing material 124, the iron-containing material 126, and the iron-making raw material such as the coke 128 are supplied from the cloth tank 122 of the top of the blast furnace 100, the process of descending in the main body 102 and the blaster from the waist of the main body 102 are performed. The hot air introduced by the 104 undergoes heat exchange and reduction reaction, and the produced molten iron and slag flow into a space below the blower nozzle 104, the so-called hearth 106, and then exit the furnace through the tap hole 108.
在還原氣氛下，含鈦物質124於高爐100內進行反應生成氮化鈦或碳化鈦，而在高爐100之爐床106位於及/或鄰近該預設位置處的碳磚表面上形成含鈦保護層。含鈦保護層的形成可提供阻絕作用，而可有效保護爐床106，避 免或減輕鐵水與鐵渣沖刷與侵蝕、化學熔蝕與熱作用。 In a reducing atmosphere, the titanium-containing material 124 is reacted in the blast furnace 100 to form titanium nitride or titanium carbide, and titanium-containing protection is formed on the surface of the carbon brick located at and/or adjacent to the predetermined position of the hearth 106 of the blast furnace 100. Floor. The formation of the titanium-containing protective layer can provide a barrier effect, and can effectively protect the hearth 106, avoiding To avoid or reduce the erosion and erosion of molten iron and iron slag, chemical ablation and heat.
在本實施方式中，藉由修改佈料倉110之配料間的填料程序，以及修改高爐100之佈料槽122的加料模式與設定，可將含鈦物質124有效率地送至爐床106之特定遭侵蝕部位。因此，可在適當的含鈦物質添加量下，即可兼顧有效保護爐床106與降低對爐床106之汙染。此外，應用本實施方式之保護方法200可無需新增高爐之設備，因此設備成本較習知方法低。 In the present embodiment, the titanium-containing material 124 can be efficiently delivered to the hearth 106 by modifying the packing procedure between the batches of the fabric bin 110 and modifying the feeding mode and setting of the distribution tank 122 of the blast furnace 100. Specific areas of erosion. Therefore, it is possible to effectively protect the hearth 106 and reduce the contamination of the hearth 106 with an appropriate amount of titanium-containing material added. In addition, the application of the protection method 200 of the present embodiment eliminates the need for new blast furnace equipment, so the equipment cost is lower than conventional methods.
請參照第3圖，其係繪示應用本發明之一實施方式的一種高爐爐床之保護方法時，含鈦物質的施加與高爐之一出鐵口附近的爐床溫度之變化的關係示意圖。從第3圖可知，當爐床之一預設位置的溫度升高時，鈦鐵礦與鈦球結礦等含鈦物質的添加可使得爐床之此預設位置的溫度有效降低。由此可知，本實施方式之保護方法的應用確實可發揮保護高爐爐床的功效。 Referring to Fig. 3, there is shown a schematic diagram showing the relationship between the application of the titanium-containing substance and the change of the temperature of the hearth near the tap hole of one of the blast furnaces when the method for protecting the blast furnace hearth according to an embodiment of the present invention is applied. As can be seen from Fig. 3, when the temperature of a predetermined position of the hearth is increased, the addition of titanium-containing material such as ilmenite and titanium ball ore can effectively lower the temperature of the predetermined position of the hearth. From this, it can be seen that the application of the protection method of the present embodiment can effectively protect the blast furnace hearth.
由上述之實施方式可知，本發明實施方式之一優點就是因為高爐爐床之保護方法可在不妨礙原本之加料速度下有效率地將含含鈦物質送至高爐爐床之特定侵蝕部位，而在侵蝕部位上形成保護層。因此，可降低爐床溫度，有效保護爐床，進而可延長高爐之爐代壽命。 It can be seen from the above embodiments that one of the advantages of the embodiment of the present invention is that the protection method of the blast furnace hearth can efficiently deliver the titanium-containing substance to the specific erosion part of the blast furnace hearth without hindering the original feeding speed. A protective layer is formed on the eroded portion. Therefore, the hearth temperature can be lowered, the hearth can be effectively protected, and the furnace life of the blast furnace can be extended.
由上述之實施方式可知，本發明實施方式之另一優點就是因為高爐爐床之保護方法無需新增高爐之設備，而以現有高爐設備即可有效控制含鈦物質加入高爐中的位置，因此相較於習知技術，此方法之設備成本低，且含鈦 物質之添加量較少，而可大幅降低製程成本。此外，由於含鈦物質可僅局部施加在高爐之特定侵蝕部位，而非全面性施加，且施加量少，因此可有效降低對爐床的汙染。 It can be seen from the above embodiments that another advantage of the embodiment of the present invention is that since the protection method of the blast furnace hearth does not require the addition of the equipment of the blast furnace, the existing blast furnace equipment can effectively control the position where the titanium-containing substance is added to the blast furnace, so Compared with the prior art, the method has low equipment cost and contains titanium The addition of a small amount of material can greatly reduce the cost of the process. In addition, since the titanium-containing substance can be locally applied only to a specific erosion portion of the blast furnace, rather than being applied in a comprehensive manner, and the amount applied is small, contamination of the hearth can be effectively reduced.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何在此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，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 While the present invention has been described above by way of example, it is not intended to be construed as a limitation of the scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
200‧‧‧保護方法 200‧‧‧Protection method
202‧‧‧步驟 202‧‧‧Steps
204‧‧‧步驟 204‧‧‧Steps
206‧‧‧步驟 206‧‧‧Steps
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