JPS62235407A - Method for recovering heat energy of exhaust gas from converter - Google Patents
Method for recovering heat energy of exhaust gas from converterInfo
- Publication number
- JPS62235407A JPS62235407A JP7640286A JP7640286A JPS62235407A JP S62235407 A JPS62235407 A JP S62235407A JP 7640286 A JP7640286 A JP 7640286A JP 7640286 A JP7640286 A JP 7640286A JP S62235407 A JPS62235407 A JP S62235407A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- converter
- powder
- limestone
- dust
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 34
- 235000019738 Limestone Nutrition 0.000 claims abstract description 32
- 239000006028 limestone Substances 0.000 claims abstract description 32
- 239000000428 dust Substances 0.000 claims abstract description 29
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 26
- 239000000292 calcium oxide Substances 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims description 62
- 238000007664 blowing Methods 0.000 claims description 21
- 238000011084 recovery Methods 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 10
- 230000004907 flux Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 239000002245 particle Substances 0.000 description 7
- 238000010304 firing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、転炉排ガスの熱エネルギー回収方法に関する
。さらに詳しくは、転炉排ガスが含む熱（顕熱）により
石灰石を焼成して生石灰を得ることにより転炉排ガスの
顕熱エネルギーを回収する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for recovering thermal energy from converter exhaust gas. More specifically, the present invention relates to a method of recovering sensible heat energy of converter exhaust gas by burning limestone with heat (sensible heat) contained in converter exhaust gas to obtain quicklime.
（従来の技術）
酸素転炉の排ガスは高濃度の一酸化炭素を含んでおり、
通常は燃料ガスとして利用するために回収している。し
かし、この転炉からの排ガスは、およそ１４００〜１６
００℃の高温であり、大量の熱エネルギーをも含んでい
る。したがって、この熱エネルギー＜ｗ４熱）を回収す
る技術の開発が期待される。しかし、該排ガスは、ダス
トの濃度が高いためその熱エネルギーを効率的に回収す
ることは困難であった。(Conventional technology) The exhaust gas from oxygen converters contains high concentrations of carbon monoxide.
It is usually recovered for use as fuel gas. However, the exhaust gas from this converter is approximately 1,400 to 16
It has a high temperature of 00°C and contains a large amount of thermal energy. Therefore, the development of a technology to recover this thermal energy < w4 heat is expected. However, since the exhaust gas has a high concentration of dust, it has been difficult to efficiently recover its thermal energy.
このような困難を克服する方法として、例えば特開昭５
６−９３８１５号公報は、転炉排ガスの顕熱により石灰
石を分解して生石灰を得、これにより転炉排ガスの熱エ
ネルギーを有効に回収することを提案する。これは、焼
成容器内に充填された石灰石を通して転炉排ガスを流通
させ、石灰石を焼成して生石灰とす゛る方法である。As a way to overcome such difficulties, for example,
Publication No. 6-93815 proposes that limestone is decomposed by the sensible heat of converter exhaust gas to obtain quicklime, thereby effectively recovering the thermal energy of converter exhaust gas. This is a method in which converter exhaust gas is passed through limestone filled in a firing container, and the limestone is fired into quicklime.
この公報の方法は、単に転炉排ガスの熱エネルギーを回
収する有効な手段を提供するばかりではなく、従来の湿
式除塵における水処理を不要化するものである。また、
安価な石灰石を焼成して付加価値の高い生石灰を得るこ
とができる点でも極めて優れている。The method disclosed in this publication not only provides an effective means for recovering thermal energy from converter exhaust gas, but also eliminates the need for water treatment in conventional wet dust removal. Also,
It is also extremely superior in that it can produce quicklime with high added value by burning inexpensive limestone.
（発明が解決しようとする問題点） しかしこの公報の方法にも次のような問題がある。(Problem that the invention attempts to solve) However, the method disclosed in this publication also has the following problems.
■石灰石が充填される焼成手段やロータリーキルンなど
、大型の設備が必要であり、設備コストがかさむ、また
、既存の設備を改造してこの方法を実施しようとすれば
、大幅なレイアウトの変更を必要とし、実現は困難であ
る。■Large equipment is required, such as a calcining means filled with limestone and a rotary kiln, which increases equipment costs.Additionally, if existing equipment is modified to implement this method, significant layout changes are required. However, it is difficult to realize this.
■焼成手段（容器）内の石灰石充填層における圧力損失
が大きいため、排ガス流速を落とす必要がある。したが
って設備が過大となる。■Since the pressure loss in the limestone packed bed in the firing means (container) is large, it is necessary to reduce the exhaust gas flow rate. Therefore, the equipment becomes excessively large.
■吹錬休止時のパージガス（窒素ガスなど）による焼成
中の石灰石の冷却が避けられない。吹錬が終了した後は
、炉口より大量の空気が吸い込まれる。−酸化炭素を大
量に含む排ガスと空気の混合による爆発を回避するため
には、石灰石を充填した容器内も十分にパージする必要
がある。この際、いったん加熱された石灰石がパージガ
スにより冷却され熱回収の効率が低下する。■Cooling of limestone during firing by purge gas (nitrogen gas, etc.) during blowing suspension is unavoidable. After blowing is complete, a large amount of air is sucked in from the furnace mouth. - In order to avoid an explosion due to the mixture of exhaust gas containing a large amount of carbon oxide and air, it is necessary to thoroughly purge the inside of the container filled with limestone. At this time, once heated limestone is cooled by the purge gas, reducing the efficiency of heat recovery.
従って、本発明の目的は、上述の従来技術の問題点を解
決する転炉排ガスの熱エネルギー回収方法および装置を
提供することである。とくに既存の設備に低度なコスト
で容易に実施でき、しかも効率的に転炉排ガスの顕熱を
回収する方法を提供することを目標とする。また、転炉
排ガスダストに含まれる鉄分を熱エネルギーと同時に回
収することを併せて目標とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method and apparatus for recovering thermal energy from converter flue gas, which solves the problems of the prior art described above. In particular, the objective is to provide a method for efficiently recovering sensible heat from converter exhaust gas that can be easily implemented in existing equipment at low cost. Another goal is to recover the iron contained in converter exhaust gas dust at the same time as thermal energy.
（問題点を解決するための手段）
本発明者等は、上述の目的を達成するため研究を重ねた
結果、転炉直上の排ガス回収系統に石灰石粉体を吹き込
んで排ガスに乗せて飛翔させ、これを下流側で転炉排ガ
スとともに生石灰として回収し転炉の底吹きに利用する
着想を得た。(Means for Solving the Problems) As a result of repeated research to achieve the above-mentioned object, the inventors of the present invention have injected limestone powder into the exhaust gas recovery system directly above the converter and caused it to fly on the exhaust gas. We came up with the idea of recovering this as quicklime along with the converter exhaust gas on the downstream side and using it for bottom blowing of the converter.
かくして本発明にかかる転炉排ガスの熱エネルギー回収
方法は、
高温の転炉排ガスの顕熱で石灰石を焼成して生石灰とす
ることにより転炉排ガスの熱エネルギーを回収する方法
において、
転炉排ガスの回収系統に、石灰石粉体を吹き込んで排ガ
ス流に乗せて搬送しながら焼成し生石灰とすることと、
排ガスに搬送されて来た生石灰粉体を排ガス回収系統下
流側において転炉排ガスダストとともに回収することと
、
回収された生石灰粉体および転炉排ガスダストを転炉に
底吹きすることと、
を特徴とする。Thus, the method for recovering thermal energy from converter flue gas according to the present invention is a method for recovering thermal energy from converter flue gas by burning limestone into quicklime using the sensible heat of high-temperature converter flue gas. Limestone powder is injected into the recovery system, carried by the exhaust gas flow, and burned to produce quicklime, and the limestone powder carried by the exhaust gas is recovered together with the converter exhaust gas dust on the downstream side of the exhaust gas recovery system. and bottom-blowing the recovered quicklime powder and converter exhaust gas dust into the converter.
（作用）
排ガス回収系統に吹き込まれた石灰石粉体は、高温の転
炉排ガスに接触して生石灰に焼成される。(Function) The limestone powder blown into the exhaust gas recovery system comes into contact with the high-temperature converter exhaust gas and is burned into quicklime.
焼成されて生じた生石灰粉体は転炉排ガスダストととも
に、排ガス回収系統下流側に設けられた乾式除塵機によ
り回収される。The calcined lime powder is collected together with the converter exhaust gas dust by a dry dust remover installed downstream of the exhaust gas recovery system.
回収された生石灰粉体および排ガスダストは、暫時、ホ
ッパなどに蓄えられ、媒溶剤として転炉の底吹きに利用
する。転炉排ガスダストは多量の鉄分を含むものである
ので、底吹きによりダスト中の鉄分も回収される。The recovered quicklime powder and exhaust gas dust are temporarily stored in a hopper and used as a solvent for bottom blowing of the converter. Since converter exhaust gas dust contains a large amount of iron, the iron content in the dust is also recovered by bottom blowing.
（実施例）
次に本発明の実施例について、添付図面を参照しながら
詳しく説明する。(Example) Next, an example of the present invention will be described in detail with reference to the accompanying drawings.
第１図は、本発明の方法を実施するための装置の構成を
しめずブロック図である。FIG. 1 is a block diagram showing the structure of an apparatus for carrying out the method of the present invention.
転炉ｌの吹錬中に発生した大量の排ガスは、排ガス回収
系統２に導かれ、誘引ファン３により誘引されてガスホ
ルダ４に貯蔵される。A large amount of exhaust gas generated during blowing in the converter 1 is guided to an exhaust gas recovery system 2, attracted by an induction fan 3, and stored in a gas holder 4.
本発明にしたがい、転炉ｌ直上において、石灰石粉体吹
込装置５により石灰石粉体が排ガス回収系統゛２に吹き
込まれる。吹き込まれた石灰石粉体は、転炉排ガスの流
れに乗って排ガス回収系統２内を飛翔し、高温の排ガス
により焼成されて生石灰粉体となる。According to the present invention, limestone powder is blown into the exhaust gas recovery system 2 by a limestone powder blowing device 5 immediately above the converter 1. The injected limestone powder flies through the exhaust gas recovery system 2 along with the flow of converter exhaust gas, and is burned by the high-temperature exhaust gas to become quicklime powder.
焼成された生石灰粉体は、転炉排ガスダストとともに乾
式除塵機６により捕捉、回収され、暫時、ホッパ８に蓄
えられる。The calcined quicklime powder is captured and recovered by the dry dust remover 6 together with the converter exhaust gas dust, and stored in the hopper 8 for a while.
ホッパ８の生石灰粉体および排ガスダスト１１は、底吹
装置９により転炉１に媒溶剤として底吹きされる。これ
により排ガスダスト中の鉄分は溶鋼中に回収され、溶鋼
の歩留が向上する。すなわち、ダスト中のＦａは溶鋼中
に溶融し、ＦｅＯは、溶鋼中のＳｉにより還元され、溶
鋼中に回収される。The quicklime powder and exhaust gas dust 11 in the hopper 8 are bottom-blown into the converter 1 as a solvent by a bottom-blowing device 9 . As a result, the iron content in the exhaust gas dust is recovered into the molten steel, improving the yield of the molten steel. That is, Fa in the dust is melted into the molten steel, and FeO is reduced by Si in the molten steel and recovered into the molten steel.
なお符号７は、排ガスの熱エネルギーをさらに回収する
排ガス冷却器を示す。Note that the reference numeral 7 indicates an exhaust gas cooler that further recovers thermal energy of the exhaust gas.
第２図は、第１図の、吹込装置５の構成の一例を示す略
式断面図である。容器５ａに入れられた石灰石粉体は、
高速で噴出する窒素ガス（Ｎ、）によりロータリーバル
ブ５ｂを介して吸引され、窒素ガスとともに回収系統２
に押し込まれる。FIG. 2 is a schematic sectional view showing an example of the configuration of the blowing device 5 shown in FIG. The limestone powder placed in the container 5a is
Nitrogen gas (N,) jetting out at high speed is sucked through the rotary valve 5b, and is sent to the recovery system 2 together with the nitrogen gas.
pushed into.
吹込装置５により回収系統２に吹き込まれる石灰石粉体
の粒径は、７００μ以下が好ましい。排ガスの流れに乗
る粒径は、排ガス流の速度による。The particle size of the limestone powder blown into the recovery system 2 by the blowing device 5 is preferably 700 μm or less. The particle size that rides on the exhaust gas flow depends on the velocity of the exhaust gas flow.
例えば以下に述べる転炉の具体例（発明の効果の項参照
）において排ガスとともに飛翔する最大粒径は約５１＋
ＩＩＩ＋（直径）である。しかし、焼成率（吹き込まれ
た石灰石粉体のうち生石灰に焼成、分解された部分の比
率）を９２％以上にして底吹きに利用することが望まし
いので、このためには、石灰石粉体の粒径を７００μ以
下とすることが好ましい。For example, in the specific example of the converter described below (see the section on effects of the invention), the maximum particle size that flies with the exhaust gas is approximately 51+
III+ (diameter). However, it is desirable to use it for bottom blowing at a firing rate (ratio of the part of the injected limestone powder that is fired and decomposed into quicklime) of 92% or more. It is preferable that the diameter is 700μ or less.
（発明の効果）
本発明にかかる転炉排ガスの熱エネルギー回収方法は、
以上に説明したように構成されているので、次のような
効果がある。(Effect of the invention) The method for recovering thermal energy from converter exhaust gas according to the present invention is as follows:
Since the configuration is as explained above, the following effects can be obtained.
■排ガスの圧力損失が低く、設備が小さくて済み、設備
費も安い。■The pressure loss of exhaust gas is low, the equipment is small, and the equipment cost is low.
０粒径の小さい石灰石粉体を転炉直上において排ガス回
収系統に吹き込み、高温の転炉排ガスに乗せて飛翔させ
ている。したがって転炉排ガスの顕熱を効率的に回収で
きる。Limestone powder with a small particle size is blown into the exhaust gas recovery system directly above the converter, and is blown away on top of the high-temperature converter exhaust gas. Therefore, the sensible heat of the converter exhaust gas can be efficiently recovered.
■設備が単純なことから既存の転炉への適用を容易であ
る。■Since the equipment is simple, it can be easily applied to existing converters.
■回収した生石灰を底吹きに利用するので、生石灰粉体
を他の設備に輸送する必要がない。■Since the recovered quicklime is used for bottom blowing, there is no need to transport quicklime powder to other facilities.
■転炉排ガスダストを生石灰とともに回収、底吹きする
ことにより、排ガスダストの含む鉄分が回収できる。し
たがって、溶鋼の歩留りを上げるという効果もある。■The iron contained in the exhaust gas dust can be recovered by collecting the converter exhaust gas dust together with quicklime and blowing it out from the bottom. Therefore, there is also the effect of increasing the yield of molten steel.
本発明の効果についてさらに具体例を挙げて説明すれば
次の通りである。The effects of the present invention will be further explained with specific examples as follows.
第３図は、溶鋼ｆｆ１２５０ ）ン、通酸時間１６分／
チャージ、発生ガスｆｆｉ３０００ＯＮｍ３／チャージ
の転炉に、種々の粒径の石灰石粉体を吹き込んで、石灰
石粉体の初期粒径（Ｄｐ）と焼成率の関係を調べた実験
の結果を示したものである。なお、この実験における排
ガス回収系統２は、全長４０ ｍの耐火断熱ダクトより
なり、転炉排ガスの平均利用温度は、１２００℃であっ
た。Figure 3 shows molten steel ff1250), acid flow time 16 minutes/
The results of an experiment were conducted to investigate the relationship between the initial particle size (Dp) of limestone powder and the firing rate by blowing limestone powder of various particle sizes into a converter with charge and generated gas ffi3000ONm3/charge. be. The exhaust gas recovery system 2 in this experiment consisted of a fireproof insulated duct with a total length of 40 m, and the average utilization temperature of the converter exhaust gas was 1200°C.
第３図から分かるように、吹込装置５から吹き込む石灰
石粉体の粒径を７００μ以下に抑えることにより、９２
％以上の焼成率を達成し、底吹きに適したものとするこ
とができた。As can be seen from FIG.
% or more, making it suitable for bottom blowing.
またこの転炉における生石灰の生成量は転炉１チャージ
当り４ トンであり、？容鋼トン当りに換算すれば、１
６キログラム／トンの生石灰が製造されたことになる。Also, the amount of quicklime produced in this converter is 4 tons per charge of the converter, and ? If converted to per ton of steel, 1
This means that 6 kg/ton of quicklime was produced.
また、この場合において、転炉排ガスダストの回収量は
、２．８トン／チヤージであり、溶鋼トン当りでは、１
１．２キログラム／トンであった。転炉排ガスダスト中
のＴ、Ｆｅｆｉ （全Ｆｅｉ。なお全Ｆｅ１ｌ中、Ｆｅ
Ｏ形は約５６％、ＦｅＯは約４４％である）は８４％に
達するので、この転炉排ガスダストを転炉底吹きに利用
することにより溶鋼トン当り９．４キログラムのＦｅが
回収できる。（ダスト中のＦｅＯは溶鋼中のＳｉにより
還元され溶鋼中に回収される。）この結果、溶鋼の歩留
りを０．９４％向上させることができた。In addition, in this case, the amount of converter exhaust gas dust collected is 2.8 tons/charge, and per ton of molten steel, it is 1.
It was 1.2 kg/ton. T in converter exhaust gas dust, Fefi (total Fei. In addition, in total Fe1l, Fe
O-type is about 56% and FeO is about 44%) reaches 84%, so by using this converter exhaust gas dust for converter bottom blowing, 9.4 kg of Fe can be recovered per ton of molten steel. (FeO in the dust is reduced by Si in the molten steel and recovered into the molten steel.) As a result, the yield of molten steel could be improved by 0.94%.
第１図は、本発明にかかる方法を実施するための装置の
構成をしめずブロック図、
第２図は、第１図の装置に用いられる吹込装置の略式断
面図、および
第３図は、吹き込まれた石灰石粉体の初期粒径と焼成率
の関係をしめずグラフである。
ｌ：転炉 ２：１ｎガス回収系統３：誘
引ファン ４：ガスホルダ５：石灰石粉体吹込
装置 ６：乾式除塵機７：排ガス冷却器 ８：ホ
ッパ
９：底吹装置FIG. 1 is a block diagram showing the structure of an apparatus for implementing the method according to the present invention, FIG. 2 is a schematic cross-sectional view of a blowing device used in the apparatus of FIG. 1, and FIG. This is a graph showing the relationship between the initial particle size of injected limestone powder and the firing rate. 1: Converter 2: 1n Gas recovery system 3: Induction fan 4: Gas holder 5: Limestone powder blowing device 6: Dry dust remover 7: Exhaust gas cooler 8: Hopper 9: Bottom blowing device
Claims (1)
ることにより転炉排ガスの熱エネルギーを回収する方法
において、 転炉排ガスの回収系統に、石灰石粉体を吹き込んで排ガ
ス流に乗せて搬送しながら焼成し生石灰とすることと、 排ガスに搬送されて来た生石灰粉体を排ガス回収系統下
流側において転炉排ガスダストとともに回収することと
、 回収された生石灰粉体および転炉排ガスダストを転炉に
底吹きすることと、 を特徴とする転炉排ガスの熱エネルギー回収方法。[Claims] In a method for recovering thermal energy from converter flue gas by burning limestone into quicklime using the sensible heat of high-temperature converter flue gas, there is provided a method in which limestone powder is blown into the converter flue gas recovery system. The quicklime powder transported by the flue gas is recovered along with the converter flue gas dust on the downstream side of the flue gas recovery system, and the recovered quicklime powder is and bottom-blowing converter exhaust gas dust into the converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7640286A JPS62235407A (en) | 1986-04-02 | 1986-04-02 | Method for recovering heat energy of exhaust gas from converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7640286A JPS62235407A (en) | 1986-04-02 | 1986-04-02 | Method for recovering heat energy of exhaust gas from converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62235407A true JPS62235407A (en) | 1987-10-15 |
Family
ID=13604277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7640286A Pending JPS62235407A (en) | 1986-04-02 | 1986-04-02 | Method for recovering heat energy of exhaust gas from converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62235407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8865101B2 (en) * | 2006-08-25 | 2014-10-21 | Robert A. Rossi | Process and system for producing commercial quality carbon dioxide from high solids lime mud |
| US9272912B2 (en) | 2006-08-25 | 2016-03-01 | Robert A. Rossi | Process and system for producing commercial quality carbon dioxide from recausticizing process calcium carbonates |
-
1986
- 1986-04-02 JP JP7640286A patent/JPS62235407A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8865101B2 (en) * | 2006-08-25 | 2014-10-21 | Robert A. Rossi | Process and system for producing commercial quality carbon dioxide from high solids lime mud |
| US9272912B2 (en) | 2006-08-25 | 2016-03-01 | Robert A. Rossi | Process and system for producing commercial quality carbon dioxide from recausticizing process calcium carbonates |
| US9994453B2 (en) | 2006-08-25 | 2018-06-12 | Robert A. Rossi | Process and system for producing commercial quality carbon dioxide from recausticizing process calcium carbonates |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2992065A (en) | Process for removing sulfur oxides from gases | |
| SU1031410A3 (en) | Method for reducing metal oxide | |
| GB972314A (en) | A method of utilising the dust present in the exhaust gases from metallurgical furnaces | |
| HU188685B (en) | Process for production of combustible gas in iron-bath reactor containing carbon monoxid and hydrogen | |
| CN108517387A (en) | A kind of converter coal gas purification and waste heat recycling system | |
| US9005570B2 (en) | Method for treating a carbon dioxide-containing waste gas from an electrofusion process | |
| JPS62235407A (en) | Method for recovering heat energy of exhaust gas from converter | |
| US4283223A (en) | Process for treating smoke from steel plants | |
| JP2004521998A (en) | How to treat smoke from furnaces | |
| CN108707710B (en) | A kind of method coke oven flue gas resource processing and utilized | |
| US2522639A (en) | Process and apparatus for thermal treatment of solids | |
| JP2014505169A (en) | Hot metal manufacturing apparatus and hot metal manufacturing method using the same | |
| CN109777906A (en) | A kind of device and method using red burnt high temperature heat production metallized pellet | |
| AU2015318566A1 (en) | Gas atomization of molten materials using by-product off-gases | |
| JPS62235408A (en) | Method for recovering heat energy of exhaust gas from converter | |
| JPH08295956A (en) | Treatment of waste in steelmaking and device therefor | |
| CN110142279A (en) | A kind of system and method for the iron-based object harmless treatment of high sulfur content | |
| JPS59123707A (en) | Utilizing method of gas formed by reaction in melt reducing furnace | |
| US3224750A (en) | Recovery of combustible gases in ferro-metallurgical processes | |
| JPS60251234A (en) | Method for recovering valuable metal from iron dust containing high zinc | |
| JPH03221593A (en) | Desulfurization of high-temperature gas | |
| SU539970A1 (en) | Method for the production of magnetite pellets | |
| JPS54149396A (en) | Recovering method for argon gas from exhaust gas in argon-oxygen blowing process | |
| US20180305789A1 (en) | Method of recovery of zinc and other metals from metallurgical fines | |
| JPS61221289A (en) | Method of drying coal by utilizing exhaust gas from sintering machine |