JP5560871B2 - Thermal energy recovery method for steel slag - Google Patents

Thermal energy recovery method for steel slag Download PDF

Info

Publication number
JP5560871B2
JP5560871B2 JP2010096236A JP2010096236A JP5560871B2 JP 5560871 B2 JP5560871 B2 JP 5560871B2 JP 2010096236 A JP2010096236 A JP 2010096236A JP 2010096236 A JP2010096236 A JP 2010096236A JP 5560871 B2 JP5560871 B2 JP 5560871B2
Authority
JP
Japan
Prior art keywords
gas
slag
conveyor
solidified
solidified slag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2010096236A
Other languages
Japanese (ja)
Other versions
JP2011226701A (en
Inventor
卓 那須
展夫 高須
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Priority to JP2010096236A priority Critical patent/JP5560871B2/en
Publication of JP2011226701A publication Critical patent/JP2011226701A/en
Application granted granted Critical
Publication of JP5560871B2 publication Critical patent/JP5560871B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Description

本発明は、高炉スラグなどの溶融鉄鋼スラグを冷却して得られた高温の凝固スラグから熱エネルギーを回収する方法に関する。   The present invention relates to a method for recovering thermal energy from high-temperature solidified slag obtained by cooling molten steel slag such as blast furnace slag.

一般に、高炉スラグなどの溶融鉄鋼スラグは１４００℃以上の熱エネルギーを保有しているため、溶融鉄鋼スラグから熱エネルギーを回収して有効利用する技術が従来から提案されている（例えば、特許文献１参照）。
しかし、特許文献１に開示された技術は溶融スラグを冷却して得られた高温の凝固スラグを円筒状に形成された縦型の熱交換器に投入し、投入された凝固スラグと空気などの気体とを熱交換せしめて凝固スラグから熱エネルギーを高温気体として回収する技術であるため、凝固スラグの詰まりが熱交換器内で発生しやすいという問題点がある。また、スラグの詰まりが発生すると熱交換器内での気体の通気性が低下し、熱エネルギーの回収効率も低下するという問題点がある。 In general, since molten steel slag such as blast furnace slag has thermal energy of 1400 ° C. or higher, a technique for recovering and effectively using thermal energy from molten steel slag has been proposed (for example, Patent Document 1). reference).
However, in the technique disclosed in Patent Document 1, a high-temperature solidified slag obtained by cooling molten slag is introduced into a vertical heat exchanger formed in a cylindrical shape, Since this is a technology for exchanging heat with gas and recovering thermal energy from the solidified slag as a high-temperature gas, there is a problem that clogging of the solidified slag is likely to occur in the heat exchanger. Further, when clogging of slag occurs, there is a problem that the gas permeability in the heat exchanger is lowered and the recovery efficiency of heat energy is also lowered.

そこで、凝固スラグと気体とを熱交換する熱交換器として、図２に示す熱交換器１を用いて凝固スラグから熱エネルギーを高温気体として回収することが検討されている。この熱交換器１はホッパー２を備えており、このホッパー２から投入された高温（例えば８５０℃）の凝固スラグＳはホッパー２の下方に配置されたクラッシャー３により細かく破砕された後、第１のスラグコンベヤとしてのベルトコンベヤ４によりほぼ水平な方向（図中右方）に搬送され、さらに第２のスラグコンベヤとしてのベルトコンベヤ５によりほぼ水平な方向（図中右方）に搬送された後、第３のスラグコンベヤとしてのベルトコンベヤ６により熱交換器１のスラグ排出口７から低温凝固スラグとして排出されるようになっている。   Therefore, as a heat exchanger for exchanging heat between the solidified slag and gas, it has been studied to recover thermal energy from the solidified slag as a high-temperature gas using the heat exchanger 1 shown in FIG. The heat exchanger 1 includes a hopper 2. The high-temperature (for example, 850 ° C.) solidified slag S charged from the hopper 2 is finely crushed by a crusher 3 disposed below the hopper 2, and then the first After being conveyed in a substantially horizontal direction (right side in the figure) by a belt conveyor 4 as a slag conveyor, and further conveyed in a substantially horizontal direction (right side in the figure) by a belt conveyor 5 as a second slag conveyor The belt conveyor 6 as a third slag conveyor is discharged as a low-temperature solidified slag from the slag outlet 7 of the heat exchanger 1.

また、図２に示す熱交換器１は凝固スラグＳと熱交換される気体（例えば空気）をベルトコンベヤ５の下方から上方に送風する気体送風部８を備えており、この気体送風部８から送風された気体はベルトコンベヤ５を通過した後、ベルトコンベヤ５の上方に形成された気体排出口９から高温気体として排出されるようになっている。
また、図２に示す熱交換器１はベルトコンベヤ５上の凝固スラグＳにより気体を気体送風部８の下流側で予熱する気体予熱部１０を備えており、この気体予熱部１０と気体送風部８との間には、気体予熱部１０で予熱された気体を気体送風部８に供給する予熱気体供給装置としてのブロア１１が設けられている。 The heat exchanger 1 shown in FIG. 2 includes a gas blower 8 that blows a gas (for example, air) that exchanges heat with the solidified slag S from below the belt conveyor 5. The blown gas passes through the belt conveyor 5 and is then discharged as a high-temperature gas from a gas discharge port 9 formed above the belt conveyor 5.
Moreover, the heat exchanger 1 shown in FIG. 2 includes a gas preheating unit 10 that preheats the gas downstream of the gas blowing unit 8 using the solidified slag S on the belt conveyor 5, and the gas preheating unit 10 and the gas blowing unit. A blower 11 serving as a preheating gas supply device for supplying the gas preheated by the gas preheating unit 10 to the gas blowing unit 8 is provided between the air blower 8 and the gas blower 11.

特開２００７−２８４７６１号公報JP 2007-284761 A

高炉スラグなどの溶融スラグを冷却して得られた高温の凝固スラグと気体とを熱交換する熱交換器として、図２に示す熱交換器を用いると、縦型の熱交換器を用いた場合のように凝固スラグの詰まりが熱交換器内で生じることを防止することができる。しかしながら、気体送風部８から送風された気体はベルトコンベヤ５上の凝固スラグＳのみによって加熱されるため、高温気体として回収される熱エネルギーの回収効率が低いという問題点があった。
本発明は上述した問題点に鑑みてなされたもので、溶融スラグを冷却して得られた高温の凝固スラグから熱エネルギーを高温気体として効率的に回収することのできる鉄鋼スラグの熱エネルギー回収方法を提供することを目的とするものである。 When the heat exchanger shown in FIG. 2 is used as a heat exchanger for exchanging heat between the high-temperature solidified slag obtained by cooling molten slag such as blast furnace slag and gas, a vertical heat exchanger is used. Thus, clogging of the solidified slag can be prevented from occurring in the heat exchanger. However, since the gas blown from the gas blower 8 is heated only by the solidified slag S on the belt conveyor 5, there is a problem that the recovery efficiency of the thermal energy recovered as a high-temperature gas is low.
The present invention has been made in view of the above-described problems, and a method for recovering thermal energy of steel slag capable of efficiently recovering thermal energy as high-temperature gas from high-temperature solidified slag obtained by cooling molten slag. Is intended to provide.

上記課題を解決するため、本発明に係る鉄鋼スラグの熱エネルギー回収方法は、溶融鉄鋼スラグを冷却して得られた高温の凝固スラグを熱交換器に投入し、前記凝固スラグを気体と熱交換せしめて凝固スラグから熱エネルギーを高温気体として回収する方法であって、前記凝固スラグと前記気体とを熱交換する熱交換機として、ホッパーと、該ホッパーから投入された凝固スラグを搬送する第１のスラグコンベヤと、該第１のスラグコンベヤにより搬送された凝固スラグを搬送する第２のスラグコンベヤと、前記凝固スラグと熱交換される気体を前記第２のスラグコンベヤの下方から上方に送風する気体送風部と、該気体送風部から送風されて前記第２のスラグコンベヤを通過し、前記第２のスラグコンベヤ上の凝固スラグによって加熱された気体を、前記第１のスラグコンベヤから前記第２のスラグコンベヤ上に落下する凝固スラグにより加熱する気体加熱部とを備えた熱交換器を用いて、前記気体送風部から送風される気体を前記第２のスラグコンベヤ上の凝固スラグと前記第１のスラグコンベヤから前記第２のスラグコンベヤ上に落下する凝固スラグの両方によって加熱して前記凝固スラグから熱エネルギーを高温気体として回収することを特徴とするものである。 In order to solve the above-mentioned problems, a method for recovering thermal energy of steel slag according to the present invention is a method in which high-temperature solidified slag obtained by cooling molten steel slag is introduced into a heat exchanger, and the solidified slag is exchanged with gas. A method for recovering thermal energy from the solidified slag as a high-temperature gas, and as a heat exchanger for exchanging heat between the solidified slag and the gas, a hopper and a first conveying the solidified slag charged from the hopper A slag conveyor, a second slag conveyor that conveys the solidified slag conveyed by the first slag conveyor, and a gas that blows upwardly the gas exchanged with the solidified slag from below the second slag conveyor a blowing unit, are blown from the gas blower passes through said second slug conveyor is heated by solidifying slag on the second slug conveyor Gas, with a heat exchanger and a gas heating unit for heating the solidified slag falls onto the second slug conveyor from said first slug conveyor, said gas being blown from the gas blower Heat is recovered from both the solidified slag on the second slag conveyor and the solidified slag falling from the first slag conveyor onto the second slag conveyor to recover thermal energy from the solidified slag as a hot gas. It is what.

本発明に係る鉄鋼スラグの熱エネルギー回収方法において、前記ホッパーから投入された凝固スラグは、前記ホッパーの下方に配置されたクラッシャーにより細かく破砕された後、前記第１のスラグコンベヤにより搬送されることが好ましい。
また、前記熱交換器は、前記凝固スラグにより気体を前記気体送風部の凝固スラグ搬送における下流側で予熱する気体予熱部であって、前記第２のスラグコンベヤの上方から気体が導入され、当該気体を凝固スラグと直接接触して予熱した後第２のスラグコンベヤの下方へ供給する気体予熱部と、前記気体送風部と前記気体予熱部との間に配置され、前記気体予熱部で予熱された気体を前記気体送風部に供給する予熱気体供給装置とを備えていることが好ましい。 In the method for recovering thermal energy of steel slag according to the present invention, the solidified slag charged from the hopper is finely crushed by a crusher disposed below the hopper and then conveyed by the first slag conveyor. Is preferred.
The heat exchanger is a gas preheating unit that preheats the gas by the solidified slag on the downstream side in the solidified slag conveyance of the gas blowing unit, and the gas is introduced from above the second slag conveyor, It is arranged between the gas preheating part which supplies the gas directly to the solidified slag and preheats it and then supplies it below the second slag conveyor, and between the gas blower part and the gas preheating part, and is preheated by the gas preheating part. It is preferable to provide a preheated gas supply device for supplying the gas to the gas blower.

本発明に係る鉄鋼スラグの熱エネルギー回収方法によると、熱交換器の気体送風部から送風された気体が第２のスラグコンベヤ上の凝固スラグと第１のスラグコンベヤから第２のスラグコンベヤ上に落下する凝固スラグの両方によって加熱されるため、溶融スラグを冷却して得られた高温の凝固スラグから熱エネルギーを高温気体として効率的に回収することができる。   According to the method for recovering thermal energy of steel slag according to the present invention, the gas blown from the gas blower of the heat exchanger is supplied to the second slag conveyor from the solidified slag on the second slag conveyor and the first slag conveyor. Since it is heated by both the falling solidified slag, heat energy can be efficiently recovered as a high-temperature gas from the high-temperature solidified slag obtained by cooling the molten slag.

本発明に係る鉄鋼スラグの熱エネルギー回収方法に用いられる熱交換器の一例を示す図である。It is a figure which shows an example of the heat exchanger used for the thermal energy recovery method of the steel slag which concerns on this invention. 本発明の先行技術を説明するための図である。It is a figure for demonstrating the prior art of this invention.

以下、図面を参照して本発明に係る鉄鋼スラグの熱エネルギー回収方法について説明する。
本発明に係る鉄鋼スラグの熱エネルギー回収方法に用いられる熱交換器の一例を図１に示す。図１に示される熱交換器１はホッパー２を備えており、このホッパー２から投入された高温（例えば８５０℃）の凝固スラグＳはホッパー２の下方に配置されたクラッシャー３により細かく破砕された後、第１のスラグコンベヤとしてのベルトコンベヤ４によりほぼ水平な方向（図中右方）に搬送され、さらに第２のスラグコンベヤとしてのベルトコンベヤ５によりほぼ水平な方向（図中右方）に搬送された後、第３のスラグコンベヤとしてのベルトコンベヤ６により熱交換器１のスラグ排出口７から低温凝固スラグとして排出されるようになっている。 Hereinafter, the thermal energy recovery method for steel slag according to the present invention will be described with reference to the drawings.
An example of the heat exchanger used for the thermal energy recovery method of steel slag according to the present invention is shown in FIG. A heat exchanger 1 shown in FIG. 1 includes a hopper 2, and high-temperature (for example, 850 ° C.) solidified slag S charged from the hopper 2 is finely crushed by a crusher 3 disposed below the hopper 2. After that, it is conveyed in a substantially horizontal direction (right side in the figure) by a belt conveyor 4 as a first slag conveyor, and further in a substantially horizontal direction (right side in the figure) by a belt conveyor 5 as a second slag conveyor. After being conveyed, the belt conveyor 6 serving as a third slag conveyor is discharged as a low-temperature solidified slag from the slag outlet 7 of the heat exchanger 1.

また、図１に示される熱交換器１は凝固スラグＳと熱交換される気体（例えば空気）をベルトコンベヤ５の下方から上方に送風する気体送風部８を備えており、この気体送風部８から送風された気体はベルトコンベヤ５を通過した後、ベルトコンベヤ５の上方に形成された気体排出口９から高温気体として排出されるようになっている。
また、図１に示される熱交換器１はベルトコンベヤ５上の凝固スラグＳにより気体を気体送風部８の下流側で予熱する気体予熱部１０を備えており、この気体予熱部１０と気体送風部８との間には、気体予熱部１０で予熱された気体を気体送風部８に供給する予熱気体供給装置としてのブロア１１が設けられている。 Further, the heat exchanger 1 shown in FIG. 1 includes a gas blower 8 that blows a gas (for example, air) heat-exchanged with the solidified slag S upward from below the belt conveyor 5. The gas blown from the air passes through the belt conveyor 5 and is then discharged as a high-temperature gas from a gas outlet 9 formed above the belt conveyor 5.
Further, the heat exchanger 1 shown in FIG. 1 includes a gas preheating unit 10 that preheats gas downstream of the gas blowing unit 8 by the solidified slag S on the belt conveyor 5. A blower 11 serving as a preheating gas supply device that supplies the gas preheated by the gas preheating unit 10 to the gas blowing unit 8 is provided between the units 8.

また、図１に示される熱交換器１はベルトコンベヤ５を通過した気体をベルトコンベヤ４からベルトコンベヤ５上に落下する凝固スラグＳにより加熱する気体加熱部１２を備えており、従って、気体送風部８から送風された気体はベルトコンベヤ５上の凝固スラグＳとベルトコンベヤ４からベルトコンベヤ５上に落下する凝固スラグＳの両方によって加熱されるようになっている。   Further, the heat exchanger 1 shown in FIG. 1 includes a gas heating unit 12 that heats the gas that has passed through the belt conveyor 5 by the solidified slag S that falls on the belt conveyor 5 from the belt conveyor 4. The gas blown from the section 8 is heated by both the solidified slag S on the belt conveyor 5 and the solidified slag S falling on the belt conveyor 5 from the belt conveyor 4.

溶融スラグを冷却して得られた高温の凝固スラグＳを熱交換器に投入し、投入された凝固スラグを気体と熱交換せしめて凝固スラグから熱エネルギーを高温気体として回収するに際して、図１に示される熱交換器１を用いると、気体送風部８から送風された気体がベルトコンベヤ５上の凝固スラグＳとベルトコンベヤ４からベルトコンベヤ５上に落下する凝固スラグＳの両方によって加熱される。したがって、気体送風部８から送風された気体をベルトコンベヤ５上の凝固スラグＳのみによって加熱する場合と比較して、溶融スラグを冷却して得られた高温の凝固スラグＳから熱エネルギーを高温気体として効率的に回収することができる。   When the high-temperature solidified slag S obtained by cooling the molten slag is put into a heat exchanger, the charged solidified slag is heat-exchanged with gas, and heat energy is recovered from the solidified slag as a high-temperature gas as shown in FIG. When the heat exchanger 1 shown is used, the gas blown from the gas blower 8 is heated by both the solidified slag S on the belt conveyor 5 and the solidified slag S falling on the belt conveyor 5 from the belt conveyor 4. Therefore, compared with the case where the gas blown from the gas blower 8 is heated only by the solidified slag S on the belt conveyor 5, the thermal energy is transferred from the high-temperature solidified slag S obtained by cooling the molten slag to the high-temperature gas. Can be efficiently recovered.

また、ホッパー２から投入された凝固スラグＳがクラッシャー３により細粒化された後、ベルトコンベヤ５を下方から上方に通過する気体と熱交換するため、ホッパー２から投入された凝固スラグＳを細粒化しない場合と比較して、溶融スラグを冷却して得られた高温の凝固スラグＳから熱エネルギーを高温気体としてより効率的に回収することができる。   In addition, after the solidified slag S charged from the hopper 2 is made fine by the crusher 3, the solidified slag S charged from the hopper 2 is finely divided to exchange heat with the gas passing through the belt conveyor 5 from below to above. Compared with the case where it does not granulate, heat energy can be more efficiently recovered as high-temperature gas from the high-temperature solidified slag S obtained by cooling the molten slag.

さらに、気体予熱部１０で予熱された気体のみが気体送風部８から送風されるため、溶融スラグを冷却して得られた高温の凝固スラグＳから熱エネルギーを高温気体としてより効率的に回収することができる。
なお、上述した本発明の一実施形態では、凝固スラグをほぼ水平な方向に搬送する第２のスラグコンベヤとしてベルトコンベヤを用いたものを例示したが、これに限定されるものではなく、ベルトコンベヤの代わりにウォーキングビームを用いてもよい。 Furthermore, since only the gas preheated by the gas preheating unit 10 is blown from the gas blowing unit 8, the thermal energy is more efficiently recovered as a high temperature gas from the high temperature solidified slag S obtained by cooling the molten slag. be able to.
In the above-described embodiment of the present invention, the belt conveyor is used as the second slag conveyor for conveying the solidified slag in a substantially horizontal direction. However, the present invention is not limited to this. A walking beam may be used instead.

Ｓ…凝固スラグ、１…熱交換器、２…ホッパー、３…クラッシャー、４…ベルトコンベヤ（第１のスラグコンベヤ）、５…ベルトコンベヤ（第２のスラグコンベヤ）、６…ベルトコンベヤ（第３のスラグコンベヤ）、７…スラグ排出口、８…気体送風部、９…気体排出口、１０…気体予熱部、１１…ブロア（予熱気体供給装置）、１２…気体加熱部。   S ... Solidification slag, 1 ... Heat exchanger, 2 ... Hopper, 3 ... Crusher, 4 ... Belt conveyor (first slag conveyor), 5 ... Belt conveyor (second slag conveyor), 6 ... Belt conveyor (third Slag conveyor), 7 ... slag discharge port, 8 ... gas blower, 9 ... gas discharge port, 10 ... gas preheating unit, 11 ... blower (preheating gas supply device), 12 ... gas heating unit.

Claims (3)

溶融鉄鋼スラグを冷却して得られた高温の凝固スラグを熱交換器に投入し、前記凝固スラグを気体と熱交換せしめて凝固スラグから熱エネルギーを高温気体として回収する方法であって、
前記凝固スラグと前記気体とを熱交換する熱交換機として、ホッパーと、該ホッパーから投入された凝固スラグを搬送する第１のスラグコンベヤと、該第１のスラグコンベヤにより搬送された凝固スラグを搬送する第２のスラグコンベヤと、前記凝固スラグと熱交換される気体を前記第２のスラグコンベヤの下方から上方に送風する気体送風部と、該気体送風部から送風されて前記第２のスラグコンベヤを通過し、前記第２のスラグコンベヤ上の凝固スラグによって加熱された気体を、前記第１のスラグコンベヤから前記第２のスラグコンベヤ上に落下する凝固スラグにより加熱する気体加熱部とを備えた熱交換器を用いて、前記気体送風部から送風される気体を前記第２のスラグコンベヤ上の凝固スラグと前記第１のスラグコンベヤから前記第２のスラグコンベヤ上に落下する凝固スラグの両方によって加熱して前記凝固スラグから熱エネルギーを高温気体として回収することを特徴とする鉄鋼スラグの熱エネルギー回収方法。 A method in which high-temperature solidified slag obtained by cooling molten steel slag is put into a heat exchanger, heat exchange is performed between the solidified slag and gas, and heat energy is recovered from the solidified slag as a high-temperature gas,
As a heat exchanger for exchanging heat between the solidified slag and the gas, a hopper, a first slag conveyor for conveying the solidified slag charged from the hopper, and a solidified slag conveyed by the first slag conveyor are conveyed. second and slag conveyor, the solidified slag and a gas blowing section for blowing gas upwardly from below the second slug conveyor being heat exchanged, the second slug conveyor is blown from the gas blowing section which passes through a gas heated by solidifying slag on the second slug conveyor, and a gas heating unit for heating the solidified slag falls onto the second slug conveyor from said first slug conveyor using a heat exchanger, before the gas to be blown from the gas blower from the first slug conveyor coagulation slag on the second slug conveyor Thermal energy recovery method of steel slag and recovering heat energy from said solidified slag is heated by both coagulation slag falls onto a second slug conveyor as hot gas. 前記ホッパーから投入された凝固スラグは、前記ホッパーの下方に配置されたクラッシャーにより細かく破砕された後、前記第１のスラグコンベヤにより搬送されることを特徴とする請求項１記載の鉄鋼スラグの熱エネルギー回収方法。   2. The heat of steel slag according to claim 1, wherein the solidified slag charged from the hopper is finely crushed by a crusher disposed below the hopper and then conveyed by the first slag conveyor. Energy recovery method. 前記熱交換器は、前記凝固スラグにより気体を前記気体送風部の凝固スラグ搬送における下流側で予熱する気体予熱部であって、前記第２のスラグコンベヤの上方から気体が導入され、当該気体を凝固スラグと直接接触して予熱した後第２のスラグコンベヤの下方へ供給する気体予熱部と、前記気体送風部と前記気体予熱部との間に配置され、前記気体予熱部で予熱された気体を前記気体送風部に供給する予熱気体供給装置とを備えていることを特徴とする請求項１または２記載の鉄鋼スラグの熱エネルギー回収方法。 The heat exchanger is a gas preheating unit that preheats gas by the solidified slag on the downstream side in the solidified slag conveyance of the gas blowing unit, and the gas is introduced from above the second slag conveyor, Gas preheated by the gas preheating unit , disposed between the gas preheating unit and the gas blowing unit and the gas preheating unit, which is preheated in direct contact with the solidified slag and then supplied to the lower side of the second slag conveyor The method for recovering thermal energy of steel slag according to claim 1, further comprising: a preheating gas supply device that supplies a gas to the gas blower.
JP2010096236A 2010-04-19 2010-04-19 Thermal energy recovery method for steel slag Expired - Fee Related JP5560871B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010096236A JP5560871B2 (en) 2010-04-19 2010-04-19 Thermal energy recovery method for steel slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010096236A JP5560871B2 (en) 2010-04-19 2010-04-19 Thermal energy recovery method for steel slag

Publications (2)

Publication Number Publication Date
JP2011226701A JP2011226701A (en) 2011-11-10
JP5560871B2 true JP5560871B2 (en) 2014-07-30

Family

ID=45042248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010096236A Expired - Fee Related JP5560871B2 (en) 2010-04-19 2010-04-19 Thermal energy recovery method for steel slag

Country Status (1)

Country Link
JP (1) JP5560871B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023274754A1 (en) 2021-06-30 2023-01-05 John Cockerill S.A. Heat recovery on steel slag
EP4159878A1 (en) 2021-09-29 2023-04-05 John Cockerill S.A. Heat recovery on steel slag

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792183B (en) * 2015-03-23 2016-10-05 株洲火炬工业炉有限责任公司 High temperature pellet waste heat recovery heat utilization device
CN112985086A (en) * 2021-02-22 2021-06-18 晋城市博宇链传动有限公司 Closed-cycle iron and steel sintered red ore cooling device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6259558A (en) * 1985-09-09 1987-03-16 住友金属工業株式会社 Utilization of slag sensible heat
JPS6274009A (en) * 1985-09-27 1987-04-04 Sumitomo Metal Ind Ltd Method for generating electric power by recovery of pressure from top of blast furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023274754A1 (en) 2021-06-30 2023-01-05 John Cockerill S.A. Heat recovery on steel slag
EP4159878A1 (en) 2021-09-29 2023-04-05 John Cockerill S.A. Heat recovery on steel slag

Also Published As

Publication number Publication date
JP2011226701A (en) 2011-11-10

Similar Documents

Publication Publication Date Title
JP5560871B2 (en) Thermal energy recovery method for steel slag
CN104988255B (en) A kind of liquid slag waste heat recovery and the method and apparatus system of tailings ultra micro efflorescence
CN101871025B (en) Metallurgical molten slag dry-type processing device and processing method thereof
JP2007263500A (en) Method for utilization of exhaust heat
JP2010235389A (en) Method of recovering heat energy of slag
JP5560864B2 (en) Thermal energy recovery method for steel slag
JP6318982B2 (en) Heat recovery method and heat recovery system for solidified slag
JP2013139596A (en) Method and system for recovering heat
JP2010235323A (en) Method of recovering heat energy of slag
JP5998845B2 (en) Heat recovery system and heat recovery method for solidified slag
CN104215078A (en) Magnesia clinker production equipment with waste heat recovery device and process
CN107058653B (en) High temperature furnace slag recoverying and utilizing method
CN108220519A (en) Molten iron manufacturing device and process for producing molten iron
JPH11181508A (en) Equipment for recovering heat in molten blast furnace slag
TW201202432A (en) Method and device for recovering energy downstream of a continuous casting installation
JP2007091512A (en) Method of utilizing heat energy in cement manufacturing apparatus, and cement manufacturing equipement
KR101351318B1 (en) Apparatus for Recovering Sensible Heat and Method Thereof
KR101312623B1 (en) Slag treatment apparatus and treatment method thereof
JP6288139B2 (en) Carbon dioxide regeneration system using slag heat
CN109883210A (en) A kind of blast furnace cinder residual neat recovering system and method
JP5942427B2 (en) Heat recovery method for molten slag
JP2014062671A (en) Sensible heat recovery device and sensible heat recovery method for molten slag
CN114292970A (en) Device system and method for recycling waste heat of smelting furnace slag
JP5949575B2 (en) Heat recovery system and heat recovery method for solidified slag
JP2014084524A (en) Heat recovery system in iron-manufacturing plant

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130221

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140212

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140409

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140513

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140526

R150 Certificate of patent or registration of utility model

Ref document number: 5560871

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees