JP2008144256A - Method for producing sintered ore and ore composition for producing sintered ore - Google Patents

Method for producing sintered ore and ore composition for producing sintered ore Download PDF

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JP2008144256A
JP2008144256A JP2006336301A JP2006336301A JP2008144256A JP 2008144256 A JP2008144256 A JP 2008144256A JP 2006336301 A JP2006336301 A JP 2006336301A JP 2006336301 A JP2006336301 A JP 2006336301A JP 2008144256 A JP2008144256 A JP 2008144256A
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ore
sintered
molasses
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raw material
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Jin-Luh Mou
チン ルー モウ
Wen Chieh Li
ウェン チー リー
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China Steel Corp
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China Steel Corp
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<P>PROBLEM TO BE SOLVED: To provide a method for producing sintered ores where productivity is improved, and to provide an ore composition for producing sintered ores. <P>SOLUTION: In the method for producing sintered ores including: a granulation stage where water is added, and granulation is performed, so as to form granular sintering raw materials; a sintering stage where the granular sintering raw materials are sintered, so as to form a sintered cake; and a cracking/sieving stage where the sintered cake is cracked and sieved, and sintered ores with a prescribed size or more are discharged, simultaneously to or before the granulation stage, molasses as a granulation promotor and organic enzyme as a combustion promotor for powder coke are blended. Also disclosed is an ore composition for producing sintered ores composed of powder ores, flux, powder coke, water, molasses and organic enzyme. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、焼結鉱の製造方法及び焼結鉱製造用の鉱石組成物に関し、特に生産性が向上する焼結鉱の製造方法及び焼結鉱製造用の鉱石組成物に関する。   The present invention relates to a method for producing sintered ore and an ore composition for producing sintered ore, and more particularly to a method for producing sintered ore and an ore composition for producing sintered ore with improved productivity.

従来、高炉に製鉄原料として装入する焼結鉱は以下のようにして製造する。まず、主原料である粉鉄鉱石、副原料であるフラックス、燃料である粉コークスからなる粉状の焼結原料を原料槽から切り出してから、ドラムミキサーで水を添加しながら混合、造粒し、粒状の焼結原料を形成する。   Conventionally, a sintered ore charged into a blast furnace as an iron-making raw material is manufactured as follows. First, a powdery sintered raw material consisting of powdered iron ore as the main raw material, flux as the auxiliary raw material, and powdered coke as the fuel is cut out from the raw material tank, and then mixed and granulated while adding water with a drum mixer. A granular sintered material is formed.

次いで、前記粒状の焼結原料を焼結機の中を移動するベルトコンベア上に層状に連続的に装入する。この粒状の焼結原料が堆積してなる焼結原料層の表層部に、点火炉で点火する上、焼結原料層の上方から空気を送入して焼結原料層中の粉コークスと接触させ、粉コークスを燃焼させることにより、燃焼帯を形成する。この燃焼帯では、空気の下行によって上面から下面に向かって進行し、燃焼帯で発生する高温の燃焼により、１２５０℃〜１３５０℃程度の温度まで上げ、粒状の焼結原料を熔融、焼結させ、焼結ケーキを形成する。   Next, the granular sintering raw material is continuously charged in layers on a belt conveyor that moves in a sintering machine. The surface of the sintered raw material layer formed by depositing the granular sintered raw material is ignited by an ignition furnace, and air is fed from above the sintered raw material layer to come into contact with the powder coke in the sintered raw material layer. And burning the coke breeze to form a combustion zone. In this combustion zone, the air travels from the upper surface to the lower surface due to the descending air, and the high temperature combustion generated in the combustion zone raises the temperature to about 1250 ° C. to 1350 ° C. to melt and sinter the granular sintering raw material. To form a sintered cake.

次いで、破砕機で前記焼結ケーキを破砕してから篩分けし、粒径５ｍｍ以上の焼結鉱を取り出して、高炉へ搬送する。一方、粒径５ｍｍ以下の焼結鉱は返鉱として、返鉱ホッパーに搬送して配合原料として再使用する。   Next, the sintered cake is crushed by a crusher and sieved, a sintered ore having a particle size of 5 mm or more is taken out and conveyed to a blast furnace. On the other hand, the sintered ore having a particle size of 5 mm or less is returned to the return hopper and reused as a blended raw material.

しかしながら、このような従来法によると、焼結原料層の燃焼の際に、焼結原料層の通気性や粉コークス自体の燃焼性が小さいと粉コークスの燃焼反応が阻害されて、焼結鉱の製品の収率を低下させたり焼結時間を延長させたりし、生産性を悪くさせる原因となる。そのため、焼結原料層の通気性や粉コークス自体の燃焼性、ひいては従来プロセスにおける生産性３２ｔ／ｍ２／２４ｈｒに対し、生産性を格段に向上させることが望まれている。 However, according to such a conventional method, when the sintering raw material layer is combusted, if the air permeability of the sintering raw material layer or the combustibility of the powder coke itself is small, the combustion reaction of the powder coke is inhibited, and the sintered ore is This lowers the yield of the product and prolongs the sintering time, leading to poor productivity. Therefore, combustion of the air permeability and coke itself sintering material layer, with respect to productivity 32t / m 2 / 24hr at turn conventional processes, it has been desired to remarkably improve the productivity.

本発明の目的は、焼結原料層の通気性や粉コークス自体の燃焼性を改善すると共に、生産性を格段に向上させることができる焼結鉱の製造方法及び焼結鉱製造用の鉱石組成物を提供することにある。   The object of the present invention is to improve the air permeability of the sintered raw material layer and the combustibility of the powder coke itself, and to improve the productivity, and to produce a sintered ore and an ore composition for producing the sintered ore. To provide things.

本発明者らは、研究に研究を重ねた結果、造粒原料に、水の他に、糖蜜と有機酵素をも配合すれば、糖蜜が通気性を低下させる原因となる細かい粒子になる焼結原料を、粒度がより大きくてその集合の見掛け容積が割合に嵩張る粒子に造粒しておき、焼結原料層の通気性を大きくする一方、有機酵素が粉コークスの多環芳香族炭化水素を分解して、粉コークス自体の燃焼性をも促進させることができるので、その後の焼結工程において、焼結時間を大幅に短縮させ、生産性を向上させることができることを知見して本発明に到達した。   As a result of repeated researches, the inventors of the present invention have sinterd the granulated raw material into fine particles that cause molasses to reduce air permeability if they also contain molasses and organic enzymes in addition to water. The raw material is granulated into particles having a larger particle size and a larger apparent volume of the aggregate to increase the air permeability of the sintered raw material layer, while the organic enzyme converts the polycyclic aromatic hydrocarbon of the powder coke. Since it can be decomposed to promote the combustibility of the powder coke itself, it is found in the present invention that it can greatly reduce the sintering time and improve the productivity in the subsequent sintering process. Reached.

前記知見により、本発明は、まず、主成分とする粉鉱石、フラックス、粉コークスからなる粉状の焼結原料に、水を添加して造粒し、粒状の焼結原料を形成する造粒工程と、粒状の焼結原料を焼結させて焼結ケーキを形成する焼結工程と、焼結ケーキを破砕してから篩分けし、所定サイズ以上の焼結鉱を取り出す破砕・篩分け工程とを備える焼結鉱の製造方法において、造粒工程と同時またはその前に、造粒促進剤としての糖蜜と粉コークスの燃焼促進剤としての有機酵素を配合することを特徴とする焼結鉱の製造方法を提供する。   Based on the above knowledge, the present invention first granulates by adding water to a powdery sintered raw material consisting of powdered ore, flux and coke as a main component to form a granular sintered raw material. A sintering process that forms a sintered cake by sintering a granular sintering raw material, and a crushing and sieving process that crushes the sintered cake and then screens out the sintered ore of a predetermined size or more. In the method for producing a sintered ore comprising: a sintered ore characterized by blending molasses as a granulation accelerator and an organic enzyme as a combustion accelerator for powdered coke simultaneously with or before the granulation step A manufacturing method is provided.

また、本発明は、焼結鉱製造用の鉱石組成物であって、粉鉱石と、フラックスと、粉コークスと、水と、糖蜜と、有機酵素とからなったことを特徴とする鉱石組成物を提供する。   The present invention also provides an ore composition for producing sintered ore, comprising an ore composition comprising powdered ore, flux, powdered coke, water, molasses, and an organic enzyme. I will provide a.

前記焼結鉱の製造方法において、前記有機酵素として、該有機酵素を生む菌種組成物を配合してから、焼結前の焼結原料内において、前記糖蜜を栄養剤として生ませても良い。即ち、前記鉱石組成物は、粉鉱石と、フラックスと、粉コークスと、水と、糖蜜と、有機酵素を生む菌種組成物とからなったものを使用しても良い。   In the method for producing a sintered ore, the molasses may be grown as a nutrient in the sintered raw material before sintering after blending the bacterial species composition producing the organic enzyme as the organic enzyme. . That is, the ore composition may be composed of powdered ore, flux, powdered coke, water, molasses, and a bacterial species composition that produces organic enzymes.

本発明による方法では、焼結鉱製造用の鉱石組成物として、糖蜜と有機酵素をも配合するため、造粒工程において、造粒性を上げて、サイズがより大きい粒子を形成し、その後の焼結工程における焼結原料層の通気性を大きくする一方、粉コークス自体の燃焼性をも促進させることができるので、従来の焼結設備の調整を行わずに、簡単な方法で生産性を格段に向上させることができる。   In the method according to the present invention, molasses and an organic enzyme are also blended as an ore composition for producing sinter, so that in the granulation step, granulation is increased to form particles having a larger size. While increasing the air permeability of the sintering raw material layer in the sintering process, it is also possible to promote the combustibility of the powder coke itself, so productivity can be improved by a simple method without adjusting conventional sintering equipment. It can be improved significantly.

以下、添付図面を参照しつつ、本発明を具体化した実施の形態につき説明し、本発明の理解に供する。図１は本発明の焼結鉱の製造方法を説明するフローチャートであり、図２は本発明の焼結鉱の製造方法を適用する焼結設備の一例を概略的に示す図である。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. FIG. 1 is a flowchart illustrating a method for producing a sintered ore according to the present invention, and FIG. 2 is a diagram schematically showing an example of a sintering facility to which the method for producing a sintered ore according to the present invention is applied.

図１及び図２を併せて参照してみると、本発明の焼結鉱の製造方法は、図２に示す焼結設備により、造粒工程と、焼結工程と、破砕・篩分け工程とに行われる。   Referring to FIGS. 1 and 2 together, the method for producing a sintered ore according to the present invention comprises a granulation step, a sintering step, a crushing / sieving step, and a sintering facility shown in FIG. To be done.

図２に示すように、焼結設備２は、主として、上下に貫通する複数の排気通路２１１を有する焼結床２１と、回りながら焼結床２１を通って移動する通気可能なベルトコンベア２２と、原料槽２３と、原料槽２３と連結していてそれから受料するドラムミキサー２４と、焼結床２１の一側の上方に設けられる上、ドラムミキサー２４と連結していてそれから受料し、焼結床２１に入る前のベルトコンベア２２上に落下的に送料する給鉱ホッパー２５と、給鉱ホッパー２５の近くに設けられていて焼結床２１における送料の表面層を点火する点火炉２６と、焼結床２１の他側に設けられていてベルトコンベア２２から受料して次のプロセスへ案内するシュート２７と、シュート２７の中に設置されていてそれを通過する送料を破砕する破砕機２８と、空気を焼結床２１における送料の上方から下方に吸引してから排気通路２１１を通って煙突３に排出するように配置・配管されている排気ポンプ２９とからなっている。   As shown in FIG. 2, the sintering facility 2 mainly includes a sintered floor 21 having a plurality of exhaust passages 211 penetrating vertically, and a breathable belt conveyor 22 that moves through the sintered floor 21 while rotating. , A raw material tank 23, a drum mixer 24 connected to the raw material tank 23 and receiving the material from the raw material tank 23; A feeding hopper 25 that drops the carriage on the belt conveyor 22 before entering the sintering bed 21 and an ignition furnace 26 that is provided near the feeding hopper 25 and ignites the shipping surface layer in the sintering bed 21. And a chute 27 that is provided on the other side of the sintered bed 21 and receives a charge from the belt conveyor 22 and guides it to the next process, and a crusher that is installed in the chute 27 and crushes the carriage that passes through it. Machine 2 If, which is air after suction from above the carriage downward from the exhaust passage 211 through the exhaust pump 29 is disposed and piping to discharge the stack 3 Prefecture in Shoyuiyuka 21.

本発明の焼結鉱の製造方法は前記焼結設備２に行われ、即ち、まず、原料槽２３から主成分とする粉鉱石、副原料であるフラックス、燃料である粉コークスからなる粉状の焼結原料を切り出してから、水を添加すると共に、造粒促進剤としての糖蜜と粉コークスの燃焼促進剤としての有機酵素をも配合して、ドラムミキサー２４の回転により均一に混合・造粒し、粒状の焼結原料を形成する(造粒工程)。   The method for producing a sintered ore according to the present invention is performed in the sintering facility 2, that is, first, a powdered ore comprising a raw material tank 23 as a main component, a flux as a secondary material, and a powdered coke as a fuel. After cutting out the sintering raw material, water is added, and molasses as a granulation accelerator and an organic enzyme as a combustion accelerator for coke breeze are blended, and the drum mixer 24 rotates to mix and granulate uniformly. Then, a granular sintered raw material is formed (granulation step).

そして、ドラムミキサー２４で混合・造粒した粒状の焼結原料を給鉱ホッパー２５を介してベルトコンベア２２上に層状に連続的に装入して、点火炉２６で堆積してなる焼結原料層の表層部に点火すると共に、排気ポンプ２９で焼結層の上側から下側へと空気を送入して焼結層中の粉コークスを燃焼させ、焼結原料層内に該下行の空気により上面から下面に向かって進行する燃焼帯を形成する上、該燃焼帯で発生する高温の燃焼により、粒状の焼結原料を熔融・焼結させ、焼結ケーキを形成する(焼結工程)。   Then, the granular raw material mixed and granulated by the drum mixer 24 is continuously charged in layers on the belt conveyor 22 via the feed hopper 25 and is deposited in the ignition furnace 26. In addition to igniting the surface layer portion of the layer, the exhaust pump 29 feeds air from the upper side to the lower side of the sintered layer to burn the powder coke in the sintered layer, and the lower air in the sintered raw material layer In addition to forming a combustion zone that progresses from the upper surface to the lower surface, the high-temperature combustion generated in the combustion zone melts and sinters the granular sintered raw material to form a sintered cake (sintering process) .

そして、破砕機２８でベルトコンベア２２の下流側から排出した焼結の終了した焼結ケーキを破砕してから篩分けし、粒径５ｍｍ以上の焼結鉱を取り出して、高炉へ搬送する(破砕・篩分け工程)。一方、粒径５ｍｍ以下の焼結鉱は返鉱として、ドラムミキサー２４と連通している返鉱ホッパー４に搬送して配合原料として再使用する。   Then, the sintered cake after the sintering discharged from the downstream side of the belt conveyor 22 is crushed by the crusher 28 and sieved, and the sintered ore having a particle size of 5 mm or more is taken out and conveyed to the blast furnace (crushing).・ Sieving step). On the other hand, the sintered ore having a particle diameter of 5 mm or less is returned to the return hopper 4 communicating with the drum mixer 24 and reused as a blended raw material.

前記粉鉱石は、鉄鉱石、銅鉱石、亜鉛鉱石、マンガン鉱石、礬土(アルミニウムの冶金)、菱苦土鉱(マグネシウムの冶金)などが挙げられる。また、前記フラックスは、石灰石、白雲石、蛇紋石、珪石などが挙げられるが、その限りではなく、粉鉱石に応じて変更する場合もある。   Examples of the fine ore include iron ore, copper ore, zinc ore, manganese ore, dredged clay (aluminum metallurgy), and rhyme clay (magnesium metallurgy). Examples of the flux include limestone, dolomite, serpentine, and quartzite, but are not limited thereto and may be changed according to the powder ore.

前記糖蜜と有機酵素の量は、前記粉状の焼結原料を基準として、１〜３重量％が好ましく、より好ましくは１.５〜２.５重量％である。水の量は、前記粉状の焼結原料を基準として、６〜９重量％が好ましい。   The amount of molasses and organic enzyme is preferably 1 to 3% by weight, more preferably 1.5 to 2.5% by weight, based on the powdery sintered raw material. The amount of water is preferably 6 to 9% by weight based on the powdery sintered raw material.

前記造粒促進剤としての糖蜜は、甘蔗糖蜜、甜菜糖蜜、蜂蜜、楓糖漿、果糖漿、またはこれらの２種類以上の混合物を用いても良い。   The molasses as the granulation accelerator may be sugar cane molasses, sugar beet molasses, honey, sucrose, fructose, or a mixture of two or more thereof.

前記粉コークスの燃焼促進剤としての有機酵素は、直接に適用する有機酵素を用いても良いが、有機酵素を生む菌種組成物を配合してから、焼結原料内において、糖蜜を栄養剤として生ませても良い。前記菌種組成物は、乳酸菌、酵母菌、放射線菌、またはこれらの２種類以上の混合物を用いることが好ましい。   The organic enzyme as the combustion promoter of the powder coke may be an organic enzyme that is directly applied, but after adding a bacterial species composition that produces the organic enzyme, molasses is added as a nutrient in the sintered raw material. It may be born as. As the bacterial species composition, lactic acid bacteria, yeasts, radiation bacteria, or a mixture of two or more of these is preferably used.

また、前記糖蜜及び有機酵素の他にも、前記菌種組成物の成長を促進するために、米糠、大豆粉、苦茶粉、米酒、米酢、微量の鉱物質及びこれらの混合物からなる群より選ばれたものを添加しても良い。さらに、前記微量の鉱物質としては、鉄、アルミニウム、マグネシウム、珪素、またはこれらの２種類以上の混合物を使用することが好ましい。   In addition to molasses and organic enzymes, a group consisting of rice bran, soy flour, bitter tea powder, rice liquor, rice vinegar, trace minerals and mixtures thereof in order to promote the growth of the fungal species composition More selected ones may be added. Furthermore, it is preferable to use iron, aluminum, magnesium, silicon, or a mixture of two or more thereof as the trace mineral.

本実施形態例においては、造粒促進剤としての糖蜜と粉コークスの燃焼促進剤としての有機酵素は原料槽２３(即ち、図中の投入口５１より)から焼結原料に添加すると示しているが、その限りではなく、ドラムミキサー２４(即ち、図中の投入口５２より)、または返鉱ホッパー４(即ち、図中の投入口５３より)から添加しても良い。   In the present embodiment, molasses as a granulation accelerator and organic enzyme as a combustion accelerator for powdered coke are added to the sintering raw material from the raw material tank 23 (ie, from the inlet 51 in the figure). However, the present invention is not limited to this, and it may be added from the drum mixer 24 (that is, from the inlet 52 in the figure) or the return hopper 4 (that is, from the inlet 53 in the figure).

本実施形態例においては、ドラムミキサー２４で混合・造粒した粒状の焼結原料は一旦給鉱ホッパー２５に貯蔵した後、ベルトコンベア２２の上に層状に連続的に装入すると示しているが、その限りではなく、ドラムミキサー２４から直接にベルトコンベア２２上に装入しても良い。   In this embodiment, the granular sintered raw material mixed and granulated by the drum mixer 24 is once stored in the feed hopper 25 and then continuously loaded in layers on the belt conveyor 22. However, the present invention is not limited thereto, and the belt conveyor 22 may be charged directly from the drum mixer 24.

叙上のように、本発明は、造粒工程と同時またはその前に、糖蜜と有機酵素を配合するから、糖蜜が通気性を低下させる原因となる細かい粒子になる焼結原料を、粒度がより大きくてその集合の見掛け容積が割合に嵩張る粒子に造粒しておき、焼結原料層の通気性を大きくする。一方、有機酵素が粉コークスの多環芳香族炭化水素を分解して、粉コークス自体の燃焼性を促進させることができる。そのため、その後の焼結工程において、焼結時間を大幅に短縮させ、生産性を向上させることができる。   As described above, the present invention mixes molasses and an organic enzyme at the same time or before the granulation step, so that the sintering raw material becomes fine particles that cause molasses to reduce air permeability. It is granulated into particles that are larger and have a larger apparent volume of the aggregate to increase the air permeability of the sintered raw material layer. On the other hand, the organic enzyme can decompose the polycyclic aromatic hydrocarbons of the powder coke and promote the combustibility of the powder coke itself. Therefore, in the subsequent sintering step, the sintering time can be greatly shortened and productivity can be improved.

下記表１に示すデータは、発明者が前記実施形態例の下に実験を行なった結果である。実施例１と２は、それぞれ１.５ｗｔ％と２.５ｗｔ％の糖蜜と有機酵素を添加した本発明であり、比較例は糖蜜と有機酵素を添加していない従来法に属する。ここで、主成分とする粉鉱石、フラックス、粉コークスからなる粉状の焼結原料の総重量は１００キロとした。

Figure 2008144256
The data shown in Table 1 below is the result of experiments conducted by the inventor under the above embodiment. Examples 1 and 2 are the present invention in which 1.5 wt% and 2.5 wt% of molasses and organic enzyme are added, respectively, and the comparative examples belong to the conventional methods in which molasses and organic enzyme are not added. Here, the total weight of the powdery sintered raw material consisting of powdered ore as a main component, flux, and powdered coke was 100 kg.
Figure 2008144256

前記表１に示したデータから明らかなように、実施例１と２の平均焼結時間３１.１分と３１.４分は、比較例の平均焼結時間３５.５分より、大幅に短くなり、約１０％〜１６％の焼結時間を短縮した。また、本発明の生産性は、従来法の３２．１６〜３２.９６(ｔ／ｍ２／２４ｈｒ)に対し、表１にみられるように３５.４２〜３７.９５(ｔ／ｍ２／２４ｈｒ)と高くなり、約１０.０％〜１５.０％ほど向上することができる。 As is apparent from the data shown in Table 1, the average sintering times of 31.1 minutes and 31.4 minutes of Examples 1 and 2 are significantly shorter than the average sintering time of 35.5 minutes of the comparative example. Thus, the sintering time of about 10% to 16% was shortened. Further, the productivity of the present invention, with respect to the conventional method 32.16~32.96 (t / m 2 / 24hr ), as seen in Table 1 35.42~37.95 (t / m 2 / 24 hr), which can be improved by about 10.0% to 15.0%.

また、表１における焼結廃気分析をみてみると、実施例１と２のＣＯ/(ＣＯ+ＣＯ２)比率は比較例より遥かに低いので、本発明は確かに燃焼を促進することが分かる。 Also, looking at the sintered waste gas analysis in Table 1, the CO / (CO + CO 2 ) ratio of Examples 1 and 2 is much lower than that of the comparative example, so that the present invention certainly promotes combustion. I understand.

上記結果より、本発明は前記のような従来技術の問題点が解消でき、即ち焼結原料層の通気性や粉コークス自体の燃焼性、ひいては生産性を向上させることが確認され、本発明の目的が達成される。   From the above results, it has been confirmed that the present invention can solve the above-mentioned problems of the prior art, that is, the air permeability of the sintering raw material layer, the combustibility of the powder coke itself, and consequently the productivity. The objective is achieved.

以上、本発明の好適な実施形態について説明したが、本発明は前記実施形態に限定して狭義に解釈されるものではなく、即ち本発明の精神の範囲内において種々の変形や変更が可能である。   The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments and is not construed in a narrow sense. That is, various modifications and changes can be made within the spirit of the present invention. is there.

叙上のように、本発明による方法では、焼結鉱製造用の鉱石組成物として、糖蜜と有機酵素をも配合するため、造粒工程において、造粒性を上げて、サイズがより大きい粒子を形成し、その後の焼結工程における焼結原料層の通気性を大きくする一方、粉コークス自体の燃焼性をも促進させることができるので、従来の焼結設備の調整を行わずに、簡単な方法で生産性を格段に向上させることができる。工業上極めて有益な効果がもたらされる。   As described above, in the method according to the present invention, molasses and an organic enzyme are also blended as an ore composition for producing sintered ore. Can increase the breathability of the sintering raw material layer in the subsequent sintering process, while also promoting the combustibility of the powder coke itself, so it is easy to adjust without adjusting the conventional sintering equipment Productivity can be greatly improved by a simple method. It has a very beneficial effect on the industry.

図１は本発明の焼結鉱の製造方法を説明するフローチャートである。FIG. 1 is a flowchart illustrating a method for producing a sintered ore according to the present invention. 図２は本発明の焼結鉱の製造方法を適用する焼結設備の一例を概略的に示す図である。FIG. 2 is a diagram schematically showing an example of a sintering facility to which the method for producing a sintered ore of the present invention is applied.

符号の説明Explanation of symbols

２．．．．焼結設備
２１．．．焼結床
２１１．．排気通路
２２．．．ベルトコンベア
２３．．．原料槽
２４．．．ドラムミキサー
２５．．．給鉱ホッパー
２６．．．点火炉
２７．．．シュート
２８．．．破砕機
２９．．．排気ポンプ
３．．．．煙突
４．．．．返鉱ホッパー
５１．．．投入口
５２．．．投入口
５３．．．投入口 2. . . . Sintering equipment 21. . . Sintered bed 211. . Exhaust passage 22. . . Belt conveyor 23. . . Raw material tank 24. . . Drum mixer 25. . . Mining hopper 26. . . Ignition furnace 27. . . Shoot 28. . . Crusher 29. . . 2. Exhaust pump . . . 3. Chimney . . . Returning hopper 51. . . Slot 52. . . Slot 53. . . Slot

Claims (19)

主成分とする粉鉱石、フラックス、粉コークスからなる粉状の焼結原料に、水を添加して造粒し、粒状の焼結原料を形成する造粒工程と、
前記粒状の焼結原料を焼結させて焼結ケーキを形成する焼結工程と、
前記焼結ケーキを破砕してから篩分けし、所定サイズ以上の焼結鉱を取り出す破砕・篩分け工程とを備える焼結鉱の製造方法において、
前記造粒工程と同時またはその前に、造粒促進剤としての糖蜜と粉コークスの燃焼促進剤としての有機酵素を配合することを特徴とする焼結鉱の製造方法。 A granulation step of adding water to a powdered sintering raw material composed of powdered ore, flux, and powdered coke as a main component, granulating it to form a granular sintered raw material,
A sintering step of sintering the granular sintering raw material to form a sintered cake;
In the method for producing sintered ore comprising crushing the sintered cake and then sieving, and crushing and sieving steps to take out the sintered ore of a predetermined size or more,
A method for producing a sintered ore comprising blending molasses as a granulation accelerator and an organic enzyme as a combustion accelerator for powdered coke simultaneously with or before the granulation step. 前記有機酵素として、該有機酵素を生む菌種組成物を配合してから、焼結原料内において、糖蜜を栄養剤として生ませることを特徴とする請求項１に記載の焼結鉱の製造方法。   The method for producing a sintered ore according to claim 1, wherein the organic enzyme is mixed with a bacterial species composition that produces the organic enzyme, and then molasses is produced as a nutrient in the sintering raw material. . 前記焼結工程において、前記粒状の焼結原料をベルトコンベア上に層状に分散してから、搬送しながら焼結させることを特徴とする請求項１または２に記載の焼結鉱の製造方法。   3. The method for producing a sintered ore according to claim 1, wherein in the sintering step, the granular sintered raw material is dispersed in a layered manner on a belt conveyor and then sintered while being conveyed. 前記糖蜜と前記有機酵素とは、粉状の焼結原料を基準として１〜３重量％の量を添加し、且つ、水は、６〜９重量％の量を添加することを特徴とする請求項１または２に記載の焼結鉱の製造方法。   The molasses and the organic enzyme are added in an amount of 1 to 3% by weight based on a powdery sintered raw material, and water is added in an amount of 6 to 9% by weight. Item 3. A method for producing a sintered ore according to Item 1 or 2. 前記糖蜜と前記有機酵素とは、粉状の焼結原料を基準として１.５〜２.５重量％の量を添加することを特徴とする請求項４に記載の焼結鉱の製造方法。   5. The method for producing a sintered ore according to claim 4, wherein the molasses and the organic enzyme are added in an amount of 1.5 to 2.5 wt% based on a powdery sintering raw material. 前記糖蜜として、甘蔗糖蜜、甜菜糖蜜、蜂蜜、楓糖漿、果糖漿及びこれらの混合物からなる群より選んで使用することを特徴とする請求項１または２に記載の焼結鉱の製造方法。   3. The method for producing a sintered ore according to claim 1, wherein the molasses is selected from the group consisting of sweet potato molasses, sugar beet molasses, honey, sucrose sugar, fructose sugar and a mixture thereof. 前記菌種組成物として、乳酸菌、酵母菌、放射線菌及びこれらの混合物からなる群より選んで使用することを特徴とする請求項２に記載の焼結鉱の製造方法。   The method for producing a sintered ore according to claim 2, wherein the fungus species composition is selected from the group consisting of lactic acid bacteria, yeasts, radiation bacteria, and mixtures thereof. 前記造粒工程に、前記糖蜜及び有機酵素の他にも、米糠、大豆粉、苦茶粉、米酒、米酢、微量の鉱物質及びこれらの混合物からなる群より選ばれたものを添加することを特徴とする請求項２に記載の焼結鉱の製造方法。   In addition to the molasses and organic enzyme, adding to the granulation step one selected from the group consisting of rice bran, soybean powder, bitter tea powder, rice liquor, rice vinegar, a trace amount of minerals and mixtures thereof The manufacturing method of the sintered ore of Claim 2 characterized by these. 前記微量の鉱物質として、鉄、アルミニウム、マグネシウム、珪素及びこれらの混合物からなる群より選ばれたものを添加することを特徴とする請求項８に記載の焼結鉱の製造方法。   9. The method for producing a sintered ore according to claim 8, wherein a material selected from the group consisting of iron, aluminum, magnesium, silicon, and a mixture thereof is added as the trace mineral. 前記粉鉱石として、鉄鉱石の粉を使用することを特徴とする請求項１または２に記載の焼結鉱の製造方法。   The method for producing sintered ore according to claim 1 or 2, wherein iron ore powder is used as the powder ore. 焼結鉱製造用の鉱石組成物であって、粉鉱石と、フラックスと、粉コークスと、水と、糖蜜と、有機酵素とからなったことを特徴とする鉱石組成物。   An ore composition for producing sintered ore, comprising an ore composition comprising powdered ore, flux, powdered coke, water, molasses, and an organic enzyme. 焼結鉱製造用の鉱石組成物であって、粉鉱石と、フラックスと、粉コークスと、水と、糖蜜と、有機酵素を生む菌種組成物とからなったことを特徴とする鉱石組成物。   An ore composition for producing sintered ore, comprising an ore composition comprising powdered ore, flux, powdered coke, water, molasses, and organic enzyme producing organic enzyme . 前記糖蜜と前記有機酵素とは、前記粉鉱石と、フラックスと、粉コークスとの総量を基準として１〜３重量％を含み、水は、６〜９重量％を含んだことを特徴とする請求項１１または１２に記載の鉱石組成物。   The molasses and the organic enzyme include 1 to 3% by weight based on the total amount of the powdered ore, flux, and powdered coke, and water includes 6 to 9% by weight. Item 13. The ore composition according to Item 11 or 12. 前記糖蜜と前記有機酵素とは、前記粉鉱石と、フラックスと、粉コークスとの総量を基準として１.５〜２.５重量％を含んだことを特徴とする請求項１３に記載の鉱石組成物。   The ore composition according to claim 13, wherein the molasses and the organic enzyme include 1.5 to 2.5 wt% based on the total amount of the powdered ore, flux, and powdered coke. object. 前記糖蜜は、甘蔗糖蜜、甜菜糖蜜、蜂蜜、楓糖漿、果糖漿及びこれらの混合物からなる群より選ばれたものを特徴とする請求項１１または１２に記載の鉱石組成物。   The ore composition according to claim 11 or 12, wherein the molasses is selected from the group consisting of sugarcane molasses, sugar beet molasses, honey, sucrose sugar, fructose sugar and a mixture thereof. 前記菌種組成物は、乳酸菌、酵母菌、放射線菌及びこれらの混合物からなる群より選ばれたことを特徴とする請求項１２に記載の鉱石組成物。   The ore composition according to claim 12, wherein the bacterial species composition is selected from the group consisting of lactic acid bacteria, yeasts, radiation bacteria, and mixtures thereof. 米糠、大豆粉、苦茶粉、米酒、米酢、微量の鉱物質及びこれらの混合物からなる群より選ばれたものをも含んだことを特徴とする請求項１２に記載の鉱石組成物。   The ore composition according to claim 12, further comprising one selected from the group consisting of rice bran, soybean powder, bitter tea powder, rice liquor, rice vinegar, a trace amount of minerals, and a mixture thereof. 前記微量の鉱物質は、鉄、アルミニウム、マグネシウム、珪素及びこれらの混合物からなる群より選ばれたことを特徴とする請求項１７に記載の鉱石組成物。   The ore composition according to claim 17, wherein the trace mineral is selected from the group consisting of iron, aluminum, magnesium, silicon, and a mixture thereof. 前記粉鉱石は、鉄鉱石由来のものであることを特徴とする請求項１１または１２に記載の鉱石組成物。   The ore composition according to claim 11 or 12, wherein the fine ore is derived from iron ore.
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CN101831540A (en) * 2010-06-12 2010-09-15 青岛磊鑫塔合成材料有限公司 Sintering combustion improver for sintering mineral powder into sinter and use method thereof
WO2015099441A1 (en) * 2013-12-26 2015-07-02 주식회사 포스코 Briquettes and method for producing same
CN105793400A (en) * 2013-12-26 2016-07-20 株式会社Posco Briquettes and method for producing same
CN110157901A (en) * 2019-05-24 2019-08-23 班友合 A kind of process of sintering separation solid waste potassium sodium zinc

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JP2002285251A (en) * 2001-01-17 2002-10-03 Kobe Steel Ltd Method for producing sintered ore
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JP2006265569A (en) * 2005-03-22 2006-10-05 Jfe Steel Kk Method for producing sintered ore and pseudo-grain for producing sintered ore

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JP2002285251A (en) * 2001-01-17 2002-10-03 Kobe Steel Ltd Method for producing sintered ore
JP2004137136A (en) * 2001-10-31 2004-05-13 Jfe Steel Kk Raw material for silicate phosphate fertilizer, and its manufacturing method
JP2003328043A (en) * 2002-05-17 2003-11-19 Kobe Steel Ltd Process for manufacturing sintered ore
JP2006265569A (en) * 2005-03-22 2006-10-05 Jfe Steel Kk Method for producing sintered ore and pseudo-grain for producing sintered ore

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Publication number Priority date Publication date Assignee Title
CN101831540A (en) * 2010-06-12 2010-09-15 青岛磊鑫塔合成材料有限公司 Sintering combustion improver for sintering mineral powder into sinter and use method thereof
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CN110157901A (en) * 2019-05-24 2019-08-23 班友合 A kind of process of sintering separation solid waste potassium sodium zinc

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