449621 A7 B7 五、發明説明（） 發明之技戀園 (請先«讀背面之注意事項再填寫本頁) 本發明係關於含有金屬之化合物的還原及熔解方法，該 方法需要供給一包括含有金屬之化合物與微粒狀之合適的 還原劑之混合物之爐料至一槽形感應爐的加熱容器內，該 加熱容器容置該種金屬之液態溶液，使該金屬溶液上方形 成至少一爐料堆。 此種方法可從US-A-5,411，570號專利得知。 發明之背畺 大部分習知之含有金屬之化合物之還原方法包含在還原 劑(例如合適的含碳化合物等)存在的情況下對含有金屬之化 合物(通常是金屬氧化物)加熱。該含有金屬之化合物及還原 劑通常合稱爐料(burden)。 在前述之習知方法中，此等加熱施行的速率通常太快使 得至少該爐料之相當的部分在還原反應完成之前就熔解 了》因此該反應有一大部分係在液態中執行。 以此方法熔解爐料所形成之熔渣除了含有該含有金屬之 化合物之氧化物外，亦含有其他可能出現在爐料中之金屬 之氧化物。 經濟部中央搮準局貝工消t合作社印装 爲了將該含有金屬之化合物從其在熔渣中之氧化物中還 原，需要在反應中加入更多的還原劑，因此產生具有多餘 的高含碳量之金屬生成物。此等生成物之高含碳量通常藉 由氧化反應，以氣態氧或f氣將氧加入生成物中或使用存 在於反應觸媒中之合適的金屬氧化物而大量地減少。此等 氧化反應因此亦在液態中發生。 應重視除了需要一初始的過量還原劑之外’此等過量之 本紙张尺度適用中國國家標準（CNS > A4規格（210 X 297兮釐） 449 6 2 1 A7 B7 五、發明説明（） 後續的氧化反應需要額外的步驟。 前述之還原與氧化反應兩者之結果，大量的多餘的氣體 在液態金屬及熔渣之表面下形成，並接著以氣泡之形式從 液態金屬及熔渣中逸出。 在前述之US-A-5,411，570號專利中，揭示一種製鋼法， 其中將爐料分兩堆加入爐中，兩堆爐料藉由浮在液態金屬 溶液頂端的熔渣層彼此保持分離。在此種安排方式中，爐 料有可能直接穿過金屬溶液或任何可能出現的熔渣，以致 爐料的還原至少有一部份在液相中發生，如此不僅造成爐 中不必要的氣體形成，也造成生成物的潛在損失。 因此本發明之目的在於提供一金屬還原及熔解方法，可 克服或至少最小化前述之問題。 發明之綜合說明 本發明提供一種含有金屬之化合物的還原及熔解方法， 該方法需要供給一包含含有金屬之化合物與微粒狀之合適 的還原劑之混合物之爐料至一可以電加熱之容器，該容器 含有該金屬之液態溶液；爐料供給之方式與速率使爐料形 成一連續爐料層，在整個液態溶液及任何可能出現的熔渣 上方呈橋狀延伸，其結果是爐料中形成一反應區，該含有 金屬之化合物可在其中被還原，而反應區下方形成一熔解 區，還原金屬在其中熔解；同時，該方法需要一種控制方 式，使大抵整個處理時間都可保持連續層，以便該含有金 屬之化合物的環可在固相中發生。 應注意由於在依照本發明之方法中大體上沒有液態反^ 發生，故前述之多餘的氣體幾乎都被除去了 ’且實際上在 (請先W讀背面之注意事項再填¾本x> •裝· ir 經濟部t央搮率局貝工消费合作社印裝 本紙珉尺度適用中國國家標準（CNS ) A4規格（210X297余釐） 經濟部中失揉率局男工消费合作社印¾ 44962 1 A7 A7 B7 五、發明説明（） 液態金屬溶液及熔渣中之氣泡之存在與否可做爲該方法是 否被正確地控制之指標。 應注意由於該方法可以大體上不需要後續之移除任何多 餘還原劑之方式來施行，故該方法之步驟數目相對於前述 習知之方法係減少了。 - 再者，依照本發明，該方法之控制係受到控制至少一個 下述參數之影響： (1) 爐料供給至該管路之方法及速率； (2) 爐料之粒子尺寸； (3) 爐料之混合程度； (4) 對該管路之供熱速率。 因爲依照本發明，該爐料供給至容器的方式與速率，會 使整個液態溶液及任何可能出現之熔渣的上方，形成一連 續爐料層，所以可防止任何未反應的爐料直接接觸液態金 屬熔渣。因此，能造成至少一部份反應發生於液相的「短 路」，也大抵被消除》 其中該爐料係經由例如隔開之進料口供給至該容器以在 容器內形成相鄰之爐料堆，該方法包含確保此進料被以爐 料堆之底部互相融合以定出該連續爐料層之方式施行之步 驟，其中該爐料層擴展橋接覆蓋該液態溶液及熔渣。因此， 此橋採可防止從爐料堆落下之爐料原料與液態_液或熔渣 直接接觸。 此等橋樑被形成之事實可以任何合適之方法來證實，例 如目視及/或使用影像記錄設備(如照相機)等。 在實際上，此等視覺記錄可以從管路之頂端以‘油量計’ 本纸張尺度適用中國國家標率（CNS ) A^^"i210X297公釐） 一" 一 -----^----1^.-----:|.订----- (請先Μ讀背面之注意事項再填寫本頁) 44962 ΐ Α7 Α7 Β7 五、發明説明（） 之方式插入一堅固的元件至爐料之方式來施行。 該橋接之形成可以任何合適的方式來施行。 因此，例如，其可藉由控制在容器內爐料堆之大小來達 成。 此外’亦可控制爐料供給至容器之進料口之策略位置及/ 或控制此等進料口之數目來達成。 再者，依照本發明，爐料之粒子尺寸係以如下之方式選 擇：使其可穿過一 l〇mm，較佳者爲6mm，更佳爲3mm之 過濾器。 專利申請人發現當採用如此小的粒子尺寸之爐料時，大 體上每一個粒子在反應區域中整個被還原成個別的金屬且 因此在粒子之溫度上升至熔解未還原之可能出現在粒子中 之氧化物所需之溫度之前維持固態。 因此任何在低於金屬熔解溫度之溫度下熔解之金屬氧化 物形式之液態金屬從此等粒子逸出至熔渣中之可能性很 低。 經濟部中央橾準局哭工消费合作社印裝 (請先《讀背面之注意事項再填寫本頁) 因此，例如以鐵舉例，粒子的核心通常包含氧化鐵(FeO)， 其在1378°C之溫度下熔解，然而此等粒子之外殼包含僅在 1535°C溶解之鐵(Fe)。因此，假如使用大於前述尺寸之粒 子，此等粒子之核心溫度可能在所有粒子中之鐵或氧化鐵 還原之前上升至前述之1378°C，這可能導致液態氧化鐵從 核心中逸出。 . 應注意由於該固態生成物之擴散被控制，所需之熱輸入 之最大速率將會是粒子尺寸與爐料之成分混合程度之函 數，此等混合比例較佳爲爐料具有一均—的混合比例。 本紙張尺度逋用中國國家揉準（CMS ) A4規格（210X297今釐） 經濟部中央揉率扃只工消费合作社印笨 44962 1 A7 B7 五、發明説明（） 此外，依照本發明，該方法可能包含燃燒在爐料上方，. 在含有金屬之化合物還原期間形成，且從爐料擴散出來之 一氧化碳(C0) 0 此等燃燒可以例如位於爐料上方之管路中之合適的氧及/ 或空氣燃燒器之來施行。 . 應注意，如此產生之熱亦會用於增加在管路中之溫度， 大部分經由來自管路頂部之熱輻射。 較佳者爲反應容器包含槽形之感應爐之加熱隔室。 專利申請人發現此等安排特別合適，原因在於在此等加 熱爐中易於控制加熱之速率。 再者，依照本發明，施行前述之方法之設備包含—單— 隔室槽形之感應爐，其具有至少一個爐料進料口；至少一 個液態金屬生成物出口；以及至少一個供反應中生成培渣 使用之出口；該至少一個爐料進料口之位置與大小，係使 經由該處引進之爐料，可在該隔室中整個液態金屬溶液及 任何可能出現之熔渣的上方，延伸爲一連續層。 在本發明之較佳形式中，含有金屬之化合物較佳爲具有 或包含一錢之化合物。 在本發明之另一形式中’含有金屬之化合物之金屬可_ 具有或包含任何其他合適之物，例如鉻及/或錳及/或銅及 鋅及/或鉛等° 本發明之一實施例將會配合圖式舉例說明，該圖式舄〜 依照本發明之加熱爐之圖式剖面圖。 ~ ~ 較佳實施例之詳細播述 在本發明之此實施例中，使用一槽形感應爐10 ’ I I I ,1T~— 1 (请先《讀背面之注意事項再填寫j頁} 本紙張尺度逋用中國國家標準（CNS > A4規格（210X297f釐） 44962 1 A7 B7 經濟部中央標準局貝工消費合作社印裝 五、發明説明（） 具有圓形剖面之延長的管狀隔室11，在其底部具有兩列以 電運作之感應器12，每一列包含五個此等感應器，每一個 具有2,2MW等級之能力。 隔室11包含兩個平行伸出之進料口歹IJ，其中只有兩個(13 及14)被顯示出來，其係沿著隔室11之相對縱向側邊伸出。 這些出口係用於導入爐料15至加熱爐10以形成浮在液態 金屬溶液18上之兩個縱向延伸之爐料堆16及17。假如有 需要，液態金屬溶液可先經由一未顯示之進料口導入隔室 容器11中》 爐料15包含粒子形式之含碳化合物(例如煤炭)與例如鐵 氧化物之均一混合物；該含碳化合物之濃度略少於還原該 礦石所需之碳化學量；及爐料15之粒子尺寸爲其可通過一 3mm過濾器。 爐料15以使爐料堆16及17之底部互相融合以形成一 覆蓋液態溶液18之爐料原料橋19之方式及速率導入容器11 中。 橋(連續爐料層)19已被形成之事實可藉由例如一從頂端 插人容器11之‘油量計’，或藉由一合適的位於容器11之邊 牆上的觀察視窗(未顯示)來證實。其亦可藉由位於容器11 內部之合適的影像記錄設備(亦未顯示)來證實。 在容器11之頂端亦具有複數氧燃燒器，在圖中僅有20 及21被顯示，藉此在反應中生成之一氧化碳及從爐料15 上層滲出之物可被燒去。 在實際運作中，一反應區域在爐料15之爐料堆16及17 中產生並實際上從爐料堆之底端擴展至其頂端。同時，一 本紙張尺度遍用中國國家梯準（CNS》A4^t格（210X297公) ^^^1- ^^^1 n I n i請先w讀背面之注項再填寫本頁) 訂 -線 4 49 62 1 A7 B7 五、發明説明（） (請先閎讀背面之注$項再填寫本頁) 熔解區域22形成並捕料堆16及17之底部及液態溶液18 之上表面間擴展。在反應期間，還原之爐料15在重力之影 響下從反應區域移向熔解區域22。 在此等熔解期間形成之熔渣漂浮於溶液18之頂端之隧 道23中，隧道23亦在熔解區域22下方伸展。隧道23通 往一位於容器11中之熔渣出口(未顯示），且爐料進料口 13 及14被安排成在隧道23中之熔渣係直接流向此等熔遼出 在此方法運作期間，橋19用於防止任何爐料原料15直 接從爐料堆16及17落入隧道23內之熔渣中，或落入溶液 18中之液態金屬內，因此防止任何的‘短路’發生。 經濟部中*揲準局貝工消貧合作社印装 經由感應器12提供給溶液18之熱能擴散至爐料堆16 及17中之爐料丨5且此熱能與藉由燃燒器20及21燒燃C0 所產生之熱使得爐料15之鐵氧化物及碳起反應，造成鐵氧 化物被還原。因此在固態中發生的所有此等反應機乎都在 爐料堆16及17之最頂端的20mm表層內發生，主要原因 在於藉由燃燒器2〇及21燒燃CO所產生之被提供給此等表 層之熱。同時’被固態還原之鐵在熔解區域22中熔解，並 從該處藉由重力而流入溶液18中。 應注意除了克服在本說明書之序言所提到之習知技術所 遭遇之問題外，依照本發明之方法之更進一步的優點在_ 由於其可以如此小尺寸之粒子之爐料來運作，故可使用除 非預先球化或燒結否則無雖用之爐料。 依照本發明之含有金屬之化合物之還原及熔解方法及用 於實現此方法之設備在不超出本發明之精神及以下之申請 本紙張尺度適用中國两家棣準（CNS > A4規格（2丨0父297公^1 ™ 9 449621 A7 B7 五、發明説明（） 專利範圍之情況下，可作種種變化實施。’ 圖式之簡單說明 第一圖爲依照本發明之加熱爐之剖視圖。 圖中， 10…槽形感應爐 11…隔室(容器）12…感應器 13、14...進料口 15…爐料 16、17“_爐料堆 18…液態金屬溶液 19…橋(連續容料層） 20、21…燃燒器 22...熔解區域 23…隧道 (請先閲讀背面之注^^項再填寫本頁)449621 A7 B7 V. Description of the invention () Technical invention of invention (please «read the precautions on the reverse side before filling out this page) This invention is about the reduction and melting method of metal-containing compounds. The charge of the mixture of the compound and the particulate suitable reducing agent is placed in a heating vessel of a trough-shaped induction furnace, and the heating vessel contains a liquid solution of the metal, so that at least one charge heap is formed above the metal solution. This method is known from US-A-5,411,570. Back to the Invention Most conventional methods for reducing metal-containing compounds involve heating a metal-containing compound (usually a metal oxide) in the presence of a reducing agent (e.g., a suitable carbon-containing compound, etc.). The metal-containing compound and the reducing agent are commonly referred to as a burden. In the aforementioned conventional methods, such heating is usually performed at a rate so that at least a considerable portion of the charge is melted before the reduction reaction is completed. Therefore, a large part of the reaction is performed in a liquid state. In addition to the oxide of the metal-containing compound, the slag formed by melting the charge in this way also contains oxides of other metals that may be present in the charge. In order to reduce the metal-containing compounds from the oxides in the slag, more reducing agents need to be added to the reaction, so it has an excessively high content. Carbon product of metal. The high carbon content of these products is usually greatly reduced by oxidation reaction, adding oxygen to the product as gaseous oxygen or f gas, or using a suitable metal oxide existing in the reaction catalyst. These oxidation reactions therefore also occur in the liquid state. Attention should be paid in addition to the need for an initial excess of reducing agent. 'These excess paper sizes are subject to Chinese national standards (CNS > A4 specifications (210 X 297 cm)) 449 6 2 1 A7 B7 V. Description of the invention () Follow-up The oxidation reaction requires additional steps. As a result of the aforementioned reduction and oxidation reactions, a large amount of excess gas is formed under the surface of the liquid metal and slag, and then escapes from the liquid metal and slag in the form of bubbles. In the aforementioned US-A-5,411,570 patent, a steel-making method is disclosed in which the charge is added to the furnace in two piles, and the two piles are separated from each other by a slag layer floating on top of the liquid metal solution. In this arrangement, the charge may pass directly through the metal solution or any slag that may appear, so that at least part of the reduction of the charge occurs in the liquid phase, which not only causes unnecessary gas formation in the furnace, but also results in generation. Therefore, the object of the present invention is to provide a method for metal reduction and melting, which can overcome or at least minimize the aforementioned problems. A comprehensive description of the invention The invention provides a method for reducing and melting a metal-containing compound. The method requires supplying a charge containing a mixture of a metal-containing compound and a suitable reducing agent in particulate form to a container that can be electrically heated, and the container containing the metal Liquid solution; the way and rate of the charge supply makes the charge form a continuous charge layer, extending in a bridge shape over the entire liquid solution and any slag that may appear. As a result, a reaction zone is formed in the charge, and the metal-containing compound can be It is reduced therein, and a melting zone is formed below the reaction zone, and the reduced metal is melted therein; at the same time, the method requires a control method so that a continuous layer can be maintained throughout the entire processing time so that the ring of the metal-containing compound can be It should occur in the solid phase. It should be noted that almost no liquid reaction occurs in the method according to the present invention, so almost all of the aforementioned excess gas is removed 'and is actually in (please read the precautions on the back before filling ¾ x x x x x x x x x x x x x x x x x x x x x x x x y x Applicable to Chinese National Standard (CNS) A4 specification (210X297%) Printed by the Male Workers Consumer Cooperative of the Ministry of Economic Affairs ¾ 44962 1 A7 A7 B7 V. Description of the invention () The existence and the bubbles of liquid metal solution and slag No, it can be used as an indicator of whether the method is properly controlled. It should be noted that because the method can be generally performed without the need for subsequent removal of any excess reducing agent, the number of steps of the method is relative to the previously known method. Reduced.-Furthermore, according to the present invention, the control of the method is affected by controlling at least one of the following parameters: (1) the method and rate of the charge to the pipeline; (2) the particle size of the charge; (3) ) The degree of mixing of the charge; (4) The heating rate of the pipeline. Because in accordance with the present invention, the manner and rate of supply of the charge to the container will form a continuous charge layer above the entire liquid solution and any slag that may occur, it can prevent any unreacted charge from directly contacting the liquid metal slag. . Therefore, it can cause at least a part of the reaction to occur in the "short circuit" of the liquid phase, which is largely eliminated. "The charge is supplied to the container through, for example, a separate feed port to form an adjacent charge pile in the container. The method includes the steps of ensuring that the feeds are fused to each other at the bottom of the charge pile to define the continuous charge layer, wherein the charge layer expands to bridge the liquid solution and the slag. Therefore, this bridge can prevent direct contact between the raw material of the charge falling from the charge heap and the liquid or liquid slag. The fact that these bridges are formed can be confirmed by any suitable method, such as visually and / or using an image recording device (such as a camera). In fact, these visual records can be calculated from the top of the pipeline in terms of 'oil volume'. The paper standard is applicable to China National Standards (CNS) A ^^ " i210X297 mm) one " one ----- ^ ---- 1 ^ .-----: | .Order ----- (Please read the precautions on the back before filling this page) 44962 ΐ Α7 Α7 Β7 V. Insertion of the invention () A sturdy component-to-charge approach. The formation of the bridge can be performed in any suitable manner. Therefore, for example, it can be achieved by controlling the size of the charge pile in the container. In addition, it can also be achieved by controlling the strategic position of the feeds to be fed to the container and / or controlling the number of such feeds. Furthermore, according to the present invention, the particle size of the charge is selected in such a way that it can pass through a filter of 10 mm, preferably 6 mm, and more preferably 3 mm. The patent applicant found that when such a small particle size charge is used, substantially every particle is reduced to an individual metal in the reaction zone and therefore the temperature of the particles rises to the melting point. The unreduced oxidation may occur in the particles. Maintain the solid state before the required temperature of the material. It is therefore very unlikely that any liquid metal in the form of a metal oxide that melts at a temperature below the metal melting temperature will escape from these particles into the slag. Printed by the Central Working Group of the Ministry of Economic Affairs of the Crying Consumer Cooperative (please read the “Notes on the back side before filling out this page”). For example, taking iron as an example, the core of the particles usually contains iron oxide (FeO), which is at 1378 ° C. It melts at temperatures, however the shell of these particles contains iron (Fe) which only dissolves at 1535 ° C. Therefore, if particles larger than the aforementioned size are used, the core temperature of these particles may rise to the aforementioned 1378 ° C before the reduction of iron or iron oxide in all particles, which may cause liquid iron oxide to escape from the core. It should be noted that because the diffusion of the solid product is controlled, the maximum rate of heat input required will be a function of the particle size and the degree of mixing of the ingredients of the charge. These mixing ratios are preferably a uniform mixing ratio of the charge. . This paper size uses Chinese National Standard (CMS) A4 (210X297). Central Kneading Rate of the Ministry of Economy. Only Consumer Cooperative Co., Ltd. Yinben 44962 1 A7 B7. In addition, according to the present invention, this method may Contains combustion above the charge, a carbon oxide (C0) that is formed during the reduction of metal-containing compounds and diffuses out of the charge. These combustions can be, for example, in a suitable oxygen and / or air burner in a pipeline above the charge. Come on. It should be noted that the heat generated in this way is also used to increase the temperature in the pipeline, most of which is radiated by heat from the top of the pipeline. Preferably, the reaction vessel comprises a heating compartment of a trough-shaped induction furnace. The patent applicant has found that these arrangements are particularly suitable because it is easy to control the rate of heating in such heating furnaces. Furthermore, according to the present invention, the equipment for carrying out the aforementioned method comprises a single-compartment trough-shaped induction furnace having at least one charge inlet, at least one liquid metal product outlet, and at least one product for reaction production. The outlet for the use of slag; the location and size of the at least one charge inlet are such that the charge introduced through this can extend above the entire liquid metal solution in the compartment and any slag that may appear, into a continuous Floor. In a preferred form of the present invention, the metal-containing compound is preferably a compound having or containing a penny. In another form of the invention, the metal of the metal-containing compound may have or include any other suitable material, such as chromium and / or manganese and / or copper and zinc and / or lead, etc. One embodiment of the invention An example will be explained in conjunction with the drawing, which is a schematic sectional view of a heating furnace according to the present invention. ~ ~ Detailed description of the preferred embodiment In this embodiment of the present invention, a slot-shaped induction furnace 10 'III, 1T ~ -1 is used (please read the "Notes on the back side before filling in page j}"逋 Printed in accordance with Chinese National Standard (CNS > A4 specification (210X297f centigrade) 44962 1 A7 B7, Central Standards Bureau, Ministry of Economic Affairs, Shellfish Consumer Cooperative, Co., Ltd.) 5. Description of the invention () An extended tubular compartment 11 with a circular cross section, There are two rows of electrically operated sensors 12 at the bottom, each row containing five of these sensors, each with a capacity of 2,2 MW. The compartment 11 contains two parallel feeding inlets 歹 IJ, of which only Two (13 and 14) are shown, which extend along opposite longitudinal sides of the compartment 11. These outlets are used to introduce the charge 15 to the heating furnace 10 to form two floating on the liquid metal solution 18 The longitudinally extending charge stacks 16 and 17. If necessary, the liquid metal solution can be first introduced into the compartment container 11 through a feed port not shown. "The charge 15 contains carbon-containing compounds in the form of particles (such as coal) and, for example, iron oxides. Homogeneous mixture of things; The concentration of carbon compounds is slightly less than the chemical amount of carbon required to reduce the ore; and the particle size of the charge 15 is such that it can pass through a 3mm filter. The charge 15 fuses the bottoms of the charge stacks 16 and 17 to form a covering liquid The way and rate of the charge material bridge 19 of the solution 18 is introduced into the container 11. The fact that the bridge (continuous charge layer) 19 has been formed can be achieved, for example, by a 'oil gauge' inserted into the container 11 from the top, or by a A suitable viewing window (not shown) located on the side wall of the container 11 can be confirmed. It can also be confirmed by a suitable image recording device (also not shown) located inside the container 11. There is also a plurality on the top of the container 11 Oxygen burners, only 20 and 21 are shown in the figure, by which carbon monoxide generated during the reaction and the substances exuding from the upper layer of the charge 15 can be burned away. In actual operation, a reaction area is in the charge stack of the charge 15 Produced in 16 and 17 and actually extended from the bottom to the top of the charge pile. At the same time, a paper scale is used in China's national standard (CNS >> A4 ^ t grid (210X297)) ^^^ 1- ^^^ 1 n I ni Please read the notes on the back before filling Page) Order-line 4 49 62 1 A7 B7 V. Description of the invention () (Please read the note on the back before filling this page) The melting zone 22 forms and captures the bottom of the stacks 16 and 17 and the liquid solution 18 The upper surface expands. During the reaction, the reduced charge 15 moves from the reaction area to the melting area 22 under the influence of gravity. The slag formed during these melting periods floats in the tunnel 23 at the top of the solution 18, and the tunnel 23 also It extends below the melting zone 22. The tunnel 23 leads to a slag outlet (not shown) located in the vessel 11, and the charge inlets 13 and 14 are arranged so that the slag in the tunnel 23 flows directly to these slags. During the operation of this method, the bridge 19 is used to prevent any charge material 15 from falling directly from the charge piles 16 and 17 into the slag in the tunnel 23 or into the liquid metal in the solution 18, thus preventing any 'short circuit' 'occur. In the Ministry of Economic Affairs, the Kazakhstan Bureau of Poverty Alleviation Cooperative printed the heat energy provided by the sensor 12 to the solution 18 and diffused to the charge materials in the charge piles 16 and 17. 5 And this heat energy is used to burn C0 through the burners 20 and 21. The generated heat causes the iron oxide and carbon of the furnace charge 15 to react, causing the iron oxide to be reduced. Therefore, all of these reactors that occur in the solid state occur in the top 20mm surface layer of the charge stacks 16 and 17, mainly because the CO produced by the combustion of the burners 20 and 21 is provided to them. Surface heat. At the same time, the iron reduced in the solid state melts in the melting region 22 and flows from there into the solution 18 by gravity. It should be noted that in addition to overcoming the problems encountered with the conventional technology mentioned in the preamble of this specification, a further advantage of the method according to the present invention is that it can be used because it can operate with a charge of particles of such a small size. Unless previously spheroidized or sintered, no charge is used. The method for reducing and melting a metal-containing compound according to the present invention and the equipment for realizing the method are applicable to the following two Chinese standards (CNS > A4 Specification (2 丨0 father 297 public ^ 1 ™ 9 449621 A7 B7 5. Description of the invention () In the case of the patent, various changes can be implemented. 'Brief description of the drawing The first picture is a sectional view of a heating furnace according to the present invention. In the figure 10… Slot-shaped induction furnace 11… Compartment (container) 12… Inductors 13, 14… Feeding port 15… Fuel charge 16, 17 “_Fuse stack 18… Liquid metal solution 19… Bridge (continuous charge layer ) 20, 21 ... burner 22 ... melting zone 23 ... tunnel (please read the note ^^ on the back before filling this page)
11T 線 經濟部中央橾準局負工消费合作社印製 本纸張尺度適用中國國家梯準（CNS>A4規格（210X297公釐） 10Printed on line 11T Printed by the Consumers ’Cooperative of the Central Bureau of Standards and Commerce of the Ministry of Economic Affairs This paper size applies to China ’s National Standard for Ladder (CNS > A4 (210X297 mm) 10