4482 B3 B7 五、發明說明（I ) 〈本發明之背景〉 本發明是關於一種用於鼓風爐之喉道裝甲。 在一個鼓風爐中，長久以來已習知的喉道裝甲係被使 用來保護鼓風爐的外部防護罩，負責抵抗因爲充滿遍及喉 道各處的濕冷物質而造成的磨耗。 初始地，這個喉道裝甲僅是以防火磚塊形成。然而， 如此的防火磚塊並不是很能耐磨耗。從那時以來’已有很 多方法被發展以增加喉道裝甲的使用壽命。 〈本發明之槪要〉 因此，已知的是例如如何以生鐵或者是鑄鋼製成之實 心的防護板件，從鼓風爐外部的防護罩懸掛而形成的喉道 .裝甲。然而，即使是這些實心防護板件因爲其厚度相當大 而具有良好的耐磨耗性，它們在一個鼓風爐的活動期間係 有變形的傾向，而此變形可能會擾亂其電荷的分佈。另外 ，一個板件係可能會破掉或者變成爲分離者，並因而鼓風 爐外部的防護罩係暴露出一個相當大的區域面對磨耗》 爲了要避免防護板件如此的問題，現今的喉道裝甲係 使用生鐵或者是鑄鋼的防護磚塊形成。這些尺寸大小比防 護板件小很多的防護磚塊係大量地重疊數列，並且被固定 至該鼓風爐的外部防護罩《以一種較老的型式製作時，它 們在爐內係形成一種平滑的撞擊表面。在以一種較爲新近 的形式製作時，每一個磚塊係爲碟形的。這些碟形的磚塊 使得有可能形成一個包含有物質保留囊袋的撞擊表面之喉 道裝甲。當如此的喉道裝甲還很新的時候，該物質保留囊 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐) --------------裝--- (請先閱讀背面之注意事項再填寫本頁) 訂·. 經濟部智慧財產局員工消費合作社印製 B7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（y ) 袋係充滿了以一種具有良好耐磨耗性的凝結物。這個耐磨 耗凝結物接著形成撞擊表面的主要部份，並且因此減少_該 金屬製磚塊對於磨耗的暴露。當該在囊袋中的凝結物被磨 損，前述的囊袋係被充滿以帶電荷的物質，該物質取代初 始之耐磨耗凝結物的保護功能。以碟形磚塊形成的喉道裝 甲係有一可接受之使用壽命，但是該磚塊固定至防護罩外 部係很複雜且喉道裝甲的安裝因此而會花費相當多的時間 Ο 爲了要使有金屬磚塊之喉道裝甲的安裝較不困難，已 知的是喉道裝甲的環形區段可以在工場中預先組裝。這起 預先組裝的區段係包含有個別地固定於金屬磚塊上之金屬 支撐板件。爲了要在鼓風爐內安裝喉道裝甲，接著係充份 地固定該預先組裝的環形區段至鼓風爐的外部防護罩。然 而’即使在鼓風爐內部的安裝所花費的時間係因而大爲減 少，仍應注意的是，如此之喉道裝甲之一個區段的組裝係 產生自固定該磚塊所需要之大量的固定元件。 本發明的目的即是要提出可以更容易安裝之使用於一 鼓風爐之裝甲，其使用壽命係比得上（如果沒有較長）使 用生鐵或鑄鐵所形成之喉道裝甲的使用壽命。 與本發明一致地，此目的係藉由根具申請專利範圍第 1項的喉道裝甲而達到。 根據本發明之喉道裝甲，其保護元件不再是磚塊，而 是結節狀的石墨鑄鐵板件β本發明在功效上具有顯著的優 點，即以結節狀的石墨鑄鐵板件形成之喉道裝甲，可以讓 4 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） 11— ----I---^ - --------- (請先閱讀背面之注意事項再填寫本頁) 五、發明說明（^) (請先閱讀背面之注意事項再填寫本頁) 其使用壽命比得上（如果沒有較長）使用生鐵或鑄鐵所形 成之喉道裝甲的使用壽命；並具有以下的二種情形：（1 )該板件係具有向上疊置之物質保留囊袋的行列；以及（ 2)該板件在前述物質保留囊袋之行列後面係具有一個內 部冷卻迴路。因爲這些囊袋的存在’該板件係具有極佳的 耐磨耗性，且其重量係較實心板件的重量要小得更多。由 於其內部冷卻迴路，該板件的後側部份（雖然其厚度減少 )係形成一個該等囊袋的支撐，此在形狀上有極佳的穩定 性且有超時的高機械強度係爲其顯著的特色°另外，該等 板件的冷卻亦可保護它們的固定元件抵抗可能影響其機械 強度的過熱。 在一個較佳的製作中，一個板件將近有三分之二的厚 度係以物質保留囊袋形成，而板件其他的厚度則形成一個 有內部冷卻迴路排置於其中的實心板件。 鑑於其減少的重量舆經由其內部冷卻迴路抵抗過熱的 保護，該等板件可以藉由螺紋桿件而被固定至外部的防護 罩。固定元件（例如內部螺紋的軸襯）亦有利地被固定於 該板件冷卻的後側部份，此係保證了其超時的強度。 經濟部智慧財產局員工消費合作社印製 該等囊袋係有利地塡充以一種具有良好耐磨耗性的凝 結物。至少在一鼓風爐開始的活動期間，此耐磨耗的凝結 物接著係形成撞擊表面的主要部份。當在囊袋內之耐磨耗 凝結物被磨損，前述之囊袋係被充滿以帶電荷的物質，其 係因而承擔初始之耐磨耗凝結物的保護功能。 爲了要確保具有良好的熱傳導，該內部冷卻迴路係較 5 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 448283 A7 B7 五、發明說明（w) 佳地澆鑄於板件。例如，該內部冷卻迴路可以具有一蜿诞 的路徑或者可以包含有平行的垂直通道延伸於二個水平的 連接器之間。 在一個較佳的實作中，該囊袋在喉道裝甲的撞擊表面 上係具有進入開口，該進入開口傾斜地穿過板件的厚度， 較佳地以一個介於與垂直成3 0度與5 0度之間的角度。 該囊袋如此的傾斜可以促進囊袋中耐磨耗凝結物或者是帶 電荷物質的保留。該囊袋開口的較低邊緣係有利地以一個 垂直的肩部成形，以便能更進一步促進耐磨耗凝結物或者 是帶電荷物質保留於囊袋中。 爲了要增加板件的穩定性，有利地係提供垂直的隔板 以限定囊袋於一個給定的行列中。 在最上層行列中的物質保留囊袋較佳地在板件的較上 末端表面中具有進入開口。雖然該喉道裝甲因而包含有二 個向上疊置的板件，較上方板件的較下邊緣係爲斜面，以 便能夠進入較低板件之最上面行列中的囊袋。如此，在該 —'個向上暨置之板件的共问接合平面係能達到一種極佳的 保護。 (附圖之簡略說明〉 本發明之其他特別的特徵與特點，將能從以下以一個 實作之有利型式的詳細說明而顯現出來；以一個說明的範 例，並以隨附的圖示說明做爲參考。這些圖示爲； 圖1係爲一個三維的視圖’其中所顯示的是一個鼓風 爐喉道裝甲的一個區段之後側表面； 6 (請先閱讀背面之;£意事項再填寫本頁) --------訂 ------. 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（2〗〇 κ 297公釐） 4 8 2 8 3 B7 五、發明說明（ 圖2係爲一個三維的視圖，其中所顯示的是圖1之區 段之前側表面； 圖3係爲圖1之區段的一個立視圖，所顯示的爲其正 面； 圖4係爲圖1之區段的一個側視圖。 〈元件符號說明〉 相同的元件符號係表示相同的 經濟部智慧財產局員工消費合作社印製 在這些隨附的圖示中 或者是相似的元件β 10 1 2、1 2 ’ 1 4、1 4 1 6 ' 1 6 1 8 ' 1 8 2 0、2 0 22、22 2 4 ' 2 4 2 6、2 6 2 8、2 8 3 0、3 0 3 2 ' 3 2 3 4 ' 3 4 3 6、3 6 4 0、4 0 4 2、4 2 環形區段 板件 後側表面 前側表面 側邊表面 側邊表面 上端部 下端部 軸襯 中斷線 中斷線 導管 連接導管 連接導管 物質保留囊袋 隔板 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐） 1432 83 A7 B7 五、發明說明（6) 4 4、4 4 ’ 垂直肩部 4 6、4 6 ’ 物質保留囊袋 5- 0 凝結物 〈較佳實施例之詳細說明〉 圖1到圖4係顯示一個鼓風爐之喉道裝甲的環形區段 10，其適合於保護鼓風爐的外部防護罩，負責抵抗充滿 遍及喉道各處的濕冷物質之磨耗。這些環形區段1 0係肩 並肩地排列’以便能夠在鼓風爐喉道的水平面形成一個連 續的環部。爲了要推測其尺寸大小'應該注意的是，對於 一個具有大約1 0米直徑之喉道的鼓風爐，如此的環形區 段1 0可以具有例如大約5米的高度以及1 > 〇米的寬度 ，使得該喉道裝甲將可由三十幾個如顯示於圖示中的環形 區段1 0形成。 該瓌形區段1 0係以向上疊置的二個板件1 2、1 2 ’構成。每個板件1 2、1 2 ’各包含有一個面對著鼓風 爐外部防護罩的後側表面1 4、1 4’ 、一個被定向爲朝 向鼓風爐內部並且被當作爲撞擊表面的前側表面1 6、1 6 '、二個側面表面1 8、2〇，1 8 ’ '20'，一個 上端部2 2、2 2 ’以及一個下端部2 4、2 4 ’ 。該後 側表面1 4、1 4’有利地具有一種形狀’該形狀係在後 側表面被固定處與外部防護罩的內部表面之形狀相配合（ 尤其是參見圖4中，較下方的板件1 2 ’之後側表面1 4 每個板件1 2、1 2’係個別地被固定至鼓風爐的外 8 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閲婧背面之注意事項再填寫本頁) 裝 經濟部智慧財產局員工消t合作杜印製 448283 A7 B7 五、發明說明（Ί) 部防護罩。從圖1至圖4中可見到，在每個板件1 2、1 2 *的後側表面1 4、1 4 ’中，係有四個軸襯2 6、2 6 ’被固定住，每個軸襯26、26’具有一內部螺紋。 在這些軸襯2 6、2 6’係具有帶螺紋桿件（未顯示）螺 結進入於其中，該等帶螺紋桿件被用來將板件1 2、1 2 ’固定至外部防護罩（未顯示）。密封係藉由將密封蓋（ 未顯示）焊接至外部防護罩。 該等板件1 2、1 2’係爲以結節狀的石墨鑄鐵製成 的模板。爲了要確保該等板件1 2、1 2 '形狀的穩定性 ，以及超時的機械強度，該等板件1 2、1 2 ’係具有一 內部冷卻迴路。如可於圖3中所見者，該等板件12、1 2 ’係包含有二個蜿蜒的通道，其路徑係以中斷線2 8、 3 0或2 8 ’ 、3 0 ’顯示。如可於圖4中所見者，這些 通道係以導管3 2、3 2 ’形成，該等導管3 2、3 2 ’ 可以被澆鑄於板件1 2、1 2 ’中靠近後側表面1 4、1 4’處。這些導管3 2、3 2’的末端從該等板件1 2、 1 2 ’的後側表面1 4、1 4 ’出現，並且形成了連接導 管34、36以及34’ 、36’ 。前述之連接導管34 經濟部智慧財產局員工消費合作杜印製 -裝--------訂· <請先閱讀背面之注意事項再填寫本頁) 、3 6以及3 4’ 、3 6’ 係不受影響地貫穿外部防護罩 而顯露，此係使得板件1 2、1 2’能夠被整合進入鼓風 爐的一個冷卻系統。該等連接導管3 4、3 4 ’ 、3 6、 3 6’進入外部防護罩之通道的不受影響性係可以藉由例 如是密封套管以及/或擴張接頭連接於每個連接導管3 4 、3 4 ’ 、3 6、3 6 ’與外部防護罩之間而被達成。 9 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 448283 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（） 每個板件1 2、1 2 ’在其前側表面1 6、1 6 ’的 側邊係包含有數個物質保留囊袋4 0、4 0’的行列（例 如見圖2 )。這些物質保留囊袋4 0、4 0 ’在板件1 2 、1 2 ’的前側表面1 6、1 6 ’具有進入開口，並且傾 斜地穿過前述之板件的厚度，造成一個與將近垂直成4 0 度的角度（見圖4 )。垂直的隔板4 2、4 2 ’限定一個 給定行列之物質保留囊袋4 0、4 0 ’ 。一個物質保留囊 袋4 0 ' 4 0’開口之較下邊緣係有利地以一個垂直肩部 4 4、4 4’形成（例如見圖2 )。 應該要注意的是，最上面行列的物質保留囊袋4 6、 4 6’之進入開口係位於板件1 2、1 2’上末端2 2、 2 2 ^的表面。可以從圖4中看出的是，該較上板件1 2 的較低表面係爲斜面的，以便能夠提供較低板件1 2 ’最 上面行列之物質保留囊袋4 6’的入口。 在圖4中，在物質保留囊袋4 0、4 0 ’ 、4 6、4 6’中的虛線區域係代表一個具有良好耐磨耗性的凝結物 5 0，至少在一鼓風爐剛開始活動時，該凝結物5 0係充 滿於物質保留囊袋4 0、40’ 、46、46’之中。此 耐磨耗凝結物5 0接著形成大於一個板件1 2、1 2 ’四 分之三的撞擊表面16、16’ ，並且因此減低了前述之 板件1 2、1 2 ’對於磨耗的暴露。當該物質保留囊袋4 ◦、4 0’ 、4 6、4 6 ’之中的凝結物5 0被磨損，前 述之物質保留囊袋4 0、40’ 、46、46’係變成充 滿以帶電荷物質，其接著係取代了初始之耐磨耗凝結物5 10 -------------裝---------訂. (靖先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐) 432 83 A7 __B7__ 五、發明說明（3 ) 0的保護功能。仍應指出的是，物質保留囊袋4 0、4〇 ’ 、4 6、4 6 ’的傾斜與該垂直的肩部4 4、4 4 ’係 (請先閱讀背面之注意事項再填寫本頁) 能促進該在物質保留囊袋40、40’ 、46、46’中 的耐磨耗凝結物5 0或者是帶電荷物質之保留。 應該要明白的是，一個板件1 2、1 2 ’三分之二的 厚度係由物質保留囊袋40、40’ 、46、46’形成 ’而一個板件1 2、1 2 ’其餘的厚度係形成一個前述之 實心的板件，該實心板件係排置有內部冷卻迴路。因爲這 些物質保留囊袋4 0、40’ 、46、46’的存在，該 等板件1 2、1 2’的重量係較具有相同厚度之實心板件 要小得多。由於其內部冷卻迴路，該等板件1 2 ' 1 2 ’ 其餘的三分之一係具有極佳穩定性的形狀，並且具有一個 超時的高機械強度。在此文中，應該特別指出的是，該等 軸襯2 6 ' 2 6 ’係被固定於板件冷卻的後側部份。該冷 卻迴路對於物質保留囊袋40、40’ 、46、46’中 之凝結物的耐磨耗亦具有一個有益的影響，並且在活動的 最後期間，該冷卻迴路能促進取代耐磨耗凝結物的帶電荷 物質之儲存。 經濟部智慧財產局員工消費合作社印製 女口以上所述之喉道裝甲的使用壽命可以估計大槪至少 相等於一個鼓風爐的活動期間，也就是至少有1 5年。 11 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297ϋ4482 B3 B7 V. Description of the invention (I) <Background of the invention> The invention relates to a throat armor for a blast furnace. In a blast furnace, the throat armor system, which has been known for a long time, is used to protect the outer protective cover of the blast furnace, which is responsible for resisting abrasion caused by filling with wet and cold materials throughout the throat. Initially, this throat armor was formed of fire-resistant bricks only. However, such fire-resistant bricks are not very wear-resistant. Since then, many methods have been developed to increase the useful life of throat armor. <Summary of the invention> Therefore, it is known, for example, how to form a solid protective plate made of pig iron or cast steel, and a throat formed by hanging from a protective cover outside the blast furnace. However, even these solid protective panels have good wear resistance due to their considerable thickness, they tend to deform during the operation of a blast furnace, and this deformation may disturb their charge distribution. In addition, a plate system may break or become a separator, and thus the protective cover system outside the blast furnace exposes a considerable area facing abrasion. To avoid such problems as the protection plate, the current throat armor It is formed of protective bricks made of pig iron or cast steel. These protective bricks, which are much smaller than the protective panels, are superimposed in series and are fixed to the outer hood of the blast furnace. When made in an older version, they form a smooth impact surface inside the furnace. . When made in a more recent form, each brick is dish-shaped. These dish-shaped bricks made it possible to form a throat armor containing the impact surface of a material retention pouch. When such larynx armor is still very new, the material retains the size of the paper and applies the Chinese National Standard (CNS) A4 (210 x 297 mm) -------------- --- (Please read the precautions on the back before filling out this page) Order .. Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economics B7 B7 Printed by the Employees’ Cooperative of the Intellectual Property Bureau of the Ministry of Economics Filled with a condensate with good abrasion resistance. This abrasion-resistant condensate then forms a major part of the impact surface and therefore reduces the exposure of the metal brick to abrasion. When the coagulum in the capsular bag is abraded, the aforementioned capsular bag is filled with a charged substance, which replaces the original protective function of abrasion-resistant coagulate. The throat armor formed by dish-shaped bricks has an acceptable service life, but the fixing of the bricks to the outside of the protective cover is complicated and the installation of the throat armor takes a considerable amount of time. The installation of the throat armor of the brick is less difficult, and it is known that the annular section of the throat armor can be pre-assembled in the workshop. This pre-assembled section consists of metal support plates individually fixed to metal bricks. In order to install throat armor in the blast furnace, the pre-assembled annular section is then fully fixed to the outer protective cover of the blast furnace. However, even if the time taken for the installation inside the blast furnace is greatly reduced, it should be noted that the assembly of such a section of the throat armor results from the large number of fixing elements required to fix the brick. The object of the present invention is to propose that the armor used in a blast furnace that can be installed more easily has a service life comparable to (if not longer than) the service life of throat armor formed using pig iron or cast iron. Consistent with the present invention, this object is achieved by using the throat armor of item 1 of the patent application scope. According to the throat armor of the present invention, the protective element is no longer a brick, but a nodular graphite cast iron plate. The present invention has a significant advantage in terms of efficacy, that is, a throat formed by a nodular graphite cast iron plate. Armor, can make 4 paper sizes applicable to China National Standard (CNS) A4 specifications (210 X 297 public love) 11 — ---- I --- ^---------- (Please read the back first Please note this page before filling in this page) 5. Description of the invention (^) (Please read the notes on the back before filling this page) Its service life is comparable to (if not longer) the throat armor formed by using pig iron or cast iron And has the following two situations: (1) the plate has a row of material retention pouches stacked upwards; and (2) the plate has a behind the row of material retention pouches Internal cooling circuit. Because of the presence of these pouches, the panel has excellent abrasion resistance and its weight is much smaller than that of a solid panel. Due to its internal cooling circuit, the back part of the plate (although its thickness is reduced) forms a support for such sacks, which has excellent stability in shape and high mechanical strength with timeout is Its distinctive features ° In addition, the cooling of these plates can also protect their fixing elements from overheating which may affect their mechanical strength. In a preferred fabrication, approximately two thirds of the thickness of a plate is formed by a material retention pouch, while the other thicknesses of the plate form a solid plate with internal cooling circuits disposed therein. In view of their reduced weight and protection from overheating via their internal cooling circuit, these plates can be fixed to the outer protective cover by means of threaded rods. A fixing element (such as an internally threaded bushing) is also advantageously fixed to the cooled rear part of the plate, which guarantees its strength over time. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs These bags are advantageously filled with a condensate with good abrasion resistance. This wear-resistant condensate then forms a major part of the impinging surface during at least one blast furnace activity. When the abrasion-resistant condensate in the pouch is worn, the aforementioned pouch is filled with a charged substance, which therefore assumes the protective function of the initial abrasion-resistant condensate. In order to ensure good heat transfer, the internal cooling circuit is more than 5 paper sizes. It is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) 448283 A7 B7. 5. Description of the invention (w) It is casted on the plate. . For example, the internal cooling circuit may have a meandering path or may include parallel vertical channels extending between two horizontal connectors. In a preferred implementation, the bladder has an entrance opening on the impact surface of the throat armor, the entrance opening obliquely passes through the thickness of the plate, preferably at an angle between 30 degrees and perpendicular to Angle between 50 degrees. Such a tilt of the pouch can promote the retention of abrasion-resistant coagulum or charged substances in the pouch. The lower edge of the pouch opening is advantageously shaped with a vertical shoulder to further promote abrasion-resistant condensate or the retention of charged substances in the pouch. In order to increase the stability of the panel, it is advantageous to provide vertical partitions to define the pouches in a given row. The substance-retaining pouches in the uppermost rank preferably have access openings in the upper end surface of the panel. Although the throat armor thus includes two plates stacked one above the other, the lower edge of the upper plate is beveled to allow access to the pouch in the uppermost row of the lower plate. In this way, an excellent protection can be achieved in the common joint plane of the upwardly facing plates. (Brief Description of the Drawings) Other special features and characteristics of the present invention will be apparent from the following detailed description of a practical and advantageous type; an illustrative example, and an accompanying illustration For reference, these diagrams are: Figure 1 is a three-dimensional view 'which shows the rear side surface of a section of a blast furnace throat armor; 6 (Please read the back; please note the matter before filling out this page ) -------- Order ------. The paper size printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs applies to the Chinese National Standard (CNS) A4 specification (2) 〇κ 297 mm 4 8 2 8 3 B7 V. Description of the invention (Figure 2 is a three-dimensional view, which shows the front side surface of the section of Figure 1; Figure 3 is an elevation view of the section of Figure 1, which is shown as Figure 4 is a side view of the section of Figure 1. <Description of Component Symbols> The same component symbols indicate the same as the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economy printed on these accompanying drawings or are Similar elements β 10 1 2, 1 2 '1 4, 1 4 1 6 '1 6 1 8' 1 8 2 0, 2 0 22, 22 2 4 '2 4 2 6, 2 6 2 8, 2 8 3 0, 3 0 3 2' 3 2 3 4 '3 4 3 6, 3 6 4 0, 4 0 4 2, 4 2 Ring segment plate rear side surface front side surface side surface side surface upper end lower end bushing interruption line interruption line conduit connection conduit connection conduit material retention capsule Bag divider (please read the precautions on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 (210 x 297 mm) 1432 83 A7 B7 V. Description of the invention (6) 4 4, 4 4 'Vertical shoulder 4 6, 4 6' Material retention pouch 5- 0 Condensate (detailed description of the preferred embodiment) Figures 1 to 4 show a ring section 10 of the throat armor of a blast furnace, suitable for The outer protective cover for protecting the blast furnace is responsible for resisting the abrasion of wet and cold substances throughout the throat. These annular sections 10 are arranged side by side so as to form a continuous ring at the horizontal level of the blast furnace throat. To infer its size, it should be noted that for a blast furnace with a throat of about 10 meters in diameter, Such a ring segment 10 may have, for example, a height of about 5 meters and a width of 1 > 0 meters, so that the throat armor will be formed by more than thirty ring segments 10 as shown in the figure. The U-shaped section 10 is composed of two plates 1 2 and 1 2 ′ stacked one above the other. Each plate 1 2 and 1 2 ′ each includes a rear surface 1 facing the outer protective cover of the blast furnace. 4, 1 4 ', one front side surface 16, 16' oriented to face the interior of the blast furnace and regarded as the impact surface, two side surfaces 1 8, 20, 18 '20, one upper end 2 2, 2 2 ′ and a lower end 2 4, 2 4 ′. The rear side surfaces 1 4 and 1 4 'advantageously have a shape that matches the shape of the inner surface of the outer shield at the place where the rear side surface is fixed (especially see FIG. 4, the lower plate 1 2 'Rear side surface 1 4 Each plate 1 2, 1 2' is individually fixed to the outside of the blast furnace 8 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (please first (Please read the notes on the back of Jing and fill in this page again.) Install the protective cover of the Intellectual Property Bureau staff of the Ministry of Economic Affairs and print 448283 A7 B7. V. Description of the invention (Ί) The protective cover can be seen in Figures 1 to 4, In the rear side surfaces 1 4 and 1 4 ′ of each plate member 1 2, 1 2 *, four bushings 2 6 and 2 6 ′ are fastened, and each bushing 26 and 26 ′ has an internal thread. Threaded rods (not shown) are threaded into these bushings 2 6 and 2 6 ′. These threaded rods are used to secure the plates 1 2, 1 2 ′ to the outer protective cover ( (Not shown). Sealing is by welding a sealing cap (not shown) to the outer protective cover. The plates 1 2, 1 2 'are nodular Formwork made of graphite cast iron. In order to ensure the stability of the shapes of these plates 1, 2, 1 'and the mechanical strength over time, these plates 1 2, 1' have an internal cooling circuit. As can be seen in FIG. 3, the plates 12, 12 'include two meandering channels, and their paths are shown by the interruption lines 28, 30 or 28', 30 '. As can be seen in Fig. 4, these channels are formed with ducts 3 2, 3 2 ', which ducts 3 2, 3 2' can be cast into the plate 1 2, 1 2 'near the rear surface 1 4 1, 14 '. The ends of these conduits 3 2, 3 2' emerge from the rear side surfaces 1 4, 1 4 'of the plates 1 2, 1 2' and form connecting conduits 34, 36, and 34 ' 36 '. The above-mentioned connection conduit 34. Consumer cooperation of the Intellectual Property Bureau of the Ministry of Economic Affairs. Du-printing ------- Ordering < Please read the notes on the back before filling this page), 3 6 and 3 4 'and 3 6' are exposed through the external protective cover without affecting. This system enables the plates 1 2, 1 2 'to be integrated into a cooling system of the blast furnace. The unaffectedness of the connection conduits 3 4, 3 4 ', 3 6, 3 6' into the external protective cover can be connected to each connection conduit 3 by, for example, a sealing sleeve and / or an expansion joint. , 3 4 ′, 3 6, 3 6 ′ and the outer shield. 9 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 448283 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention () Each plate 1 2, 1 2 'in The sides of the front side surfaces 16 and 16 'contain a plurality of rows of materials retaining pockets 40 and 40' (for example, see FIG. 2). These substances retain the pouches 40, 40 'at the front side surfaces 16, 16' of the panels 12, 12 'and have access openings, and pass obliquely through the thickness of the aforementioned panels, resulting in an An angle of 40 degrees (see Figure 4). The vertical partitions 4 2, 4 2 'define a given row of material retention pockets 40, 40'. The lower edge of the opening of a substance retention pouch 40'40 'is advantageously formed with a vertical shoulder 44, 4 4' (see, for example, Figure 2). It should be noted that the entry openings of the material retention pouches 46, 4 6 'in the top row are located on the surface of the upper ends 2 2, 2 2 ^ of the plates 1 2, 1 2'. It can be seen from Fig. 4 that the lower surface of the upper plate 1 2 is beveled so as to be able to provide the entrance of the material retention pouch 4 6 'in the uppermost row of the lower plate 1 2'. In FIG. 4, the dotted areas in the material retention pouches 40, 40 ′, 46, and 46 ′ represent a condensate 50 having good abrasion resistance, at least when a blast furnace is first started to move. The coagulum 50 is filled with the material retention capsules 40, 40 ', 46, 46'. This abrasion-resistant condensate 50 then forms more than one plate 1 2, 1 2 'three-quarters of the impact surface 16, 16', and thus reduces the abrasion exposure of the aforementioned plate 1 2, 1 2 ' . When the condensate 50 of the material retaining pouches 4 ◦, 40 ′, 4 6, 4 6 ′ is worn away, the aforementioned material retaining pouches 40, 40 ′, 46, 46 ′ become full with belts. Charged substance, which then replaces the initial wear-resistant condensate 5 10 ------------- installation --------- order. (Jingxian read the precautions on the back (Fill in this page again) This paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) 432 83 A7 __B7__ 5. Description of the invention (3) 0 protection function. It should still be noted that the inclination of the material retention pouch 40, 40 ', 46, 4' is in line with the vertical shoulders 4, 4, 4 '(Please read the precautions on the back before filling this page ) Can promote the abrasion-resistant condensate 50 in the material retention pouches 40, 40 ', 46, 46' or the retention of charged substances. It should be understood that two-thirds of the thickness of one plate 1 2 1 2 'is formed by the material retention pouches 40, 40', 46, 46 'and one plate 1 2, 1 2' The thickness is formed by the aforementioned solid plate, which is arranged with an internal cooling circuit. Because these substances retain the presence of the pouches 40, 40 ', 46, 46', the weight of these plates 12, 2, 2 'is much smaller than a solid plate with the same thickness. Due to their internal cooling circuit, the remaining one-third of the plates 12'12 'has a shape with excellent stability and a high mechanical strength over time. In this article, it should be particularly noted that the bushings 2 6 '2 6' are fixed to the cooled rear part of the plate. The cooling circuit also has a beneficial effect on the abrasion resistance of the condensate in the material retention pouches 40, 40 ', 46, 46', and it can promote the replacement of the abrasion-resistant condensate during the final period of the activity. Storage of charged substances. Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The service life of the throat armor described above for the female mouth can be estimated to be at least equal to the duration of an blast furnace activity, that is, at least 15 years. 11 This paper size applies to China National Standard (CNS) A4 (210 X 297ϋ)