JPH021898B2 - - Google Patents
Info
- Publication number
- JPH021898B2 JPH021898B2 JP20085587A JP20085587A JPH021898B2 JP H021898 B2 JPH021898 B2 JP H021898B2 JP 20085587 A JP20085587 A JP 20085587A JP 20085587 A JP20085587 A JP 20085587A JP H021898 B2 JPH021898 B2 JP H021898B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- hearth
- molten metal
- lance pipe
- furnace
- 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
Links
- 239000002184 metal Substances 0.000 claims description 41
- 229910052751 metal Inorganic materials 0.000 claims description 41
- 238000003723 Smelting Methods 0.000 claims description 27
- 239000002994 raw material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 239000012495 reaction gas Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 4
- 238000011017 operating method Methods 0.000 claims description 2
- 239000011449 brick Substances 0.000 description 30
- 238000007664 blowing Methods 0.000 description 22
- 239000002893 slag Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0026—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide in the flame of a burner or a hot gas stream
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は自溶製錬炉のセトラー部から炉内に挿
入されたランスパイプを経て鉱石、溶剤等の粉体
原料を反応用気体と共に吹込むことにより、自溶
製錬炉の処理量を増大させるための自溶製錬炉の
操業方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention blows powder raw materials such as ore and solvent together with reaction gas from the settler section of a flash smelting furnace through a lance pipe inserted into the furnace. This invention relates to a method of operating a flash smelting furnace for increasing the throughput of the flash smelting furnace.
従来自溶製錬炉では、シヤフト部天井の精鉱バ
ーナーから鉱石、溶剤等の粉体原料と、必要な補
助燃料と、空気又は酸素富化した反応用気体を吹
込み、シヤフト部を落下する間に反応して溶解
し、溶体はセトラー部に貯められ、比重差でマツ
ト、スラグに分離され、スラグはスラグ抜口から
排出され、マツトはマツト抜口から次の工程であ
る転炉の要求に応じて抜出される。この自溶製錬
炉ではシヤフト部内はかなり高温雰囲気となるた
め、精鉱処理量を通常の能力以上に増加させよう
とすると、燃焼室熱負荷が過大となり、シヤフト
部内壁煉瓦の溶損が激しくなり、また炉外に飛散
するダストの発生率も上がるため、単位時間当り
の精鉱処理量は自ずと制限される。
In conventional flash smelting furnaces, powder raw materials such as ore and solvent, necessary auxiliary fuel, and air or oxygen-enriched reaction gas are injected from the concentrate burner on the ceiling of the shaft section, and then dropped down the shaft section. The solution is stored in the settler section, separated into matte and slag by the difference in specific gravity, and the slag is discharged from the slag outlet. are extracted according to the In this flash smelting furnace, the inside of the shaft has a fairly high-temperature atmosphere, so if you try to increase the throughput of concentrate beyond the normal capacity, the heat load in the combustion chamber will become excessive, and the bricks on the inner wall of the shaft will be severely eroded. This also increases the rate of dust scattering outside the furnace, which naturally limits the amount of concentrate processed per unit time.
そこで発明者等は従来の自溶製錬炉の大きさの
ままで精鉱の増加処理を行うことのできる自溶製
錬炉を特開昭62−56538号として提案した。この
自溶製錬炉は、セトラーの天井部を貫通して粉状
の原料と反応用気体と、必要に応じて補助燃料と
をセトラー内の溶体中に吹込み可能なランスパイ
プを具えたものである。 Therefore, the inventors proposed a flash smelting furnace as JP-A-62-56538, which is capable of increasing the amount of concentrate while maintaining the size of a conventional flash smelting furnace. This flash smelting furnace is equipped with a lance pipe that can penetrate the ceiling of the settler and inject powdered raw materials, reaction gas, and, if necessary, auxiliary fuel into the solution in the settler. It is.
このようなランスパイプから溶体表面へ粉状の
原料を吹付ける場合、吹錬の反応効率を上げるた
めランスパイプからの吹込み速度は150ｍ／ｓ以
上の高速がよいとされ、吹込まれた物体が溶湯深
くまで侵入するため、ランスパイプ下の炉床煉瓦
の損傷が激しくなり、これの防止のため溶湯の浴
深を大にした特開昭61−295334号の提案がある。 When blowing powdered raw material from such a lance pipe onto the surface of the solution, it is said that the blowing speed from the lance pipe should be at a high speed of 150 m/s or more to increase the reaction efficiency of blowing, so that the blown material is Since the molten metal penetrates deeply, the hearth bricks under the lance pipe are seriously damaged.To prevent this, JP-A-61-295334 proposes increasing the depth of the molten metal bath.
炉床煉瓦の損耗は、炉内の湯洩れの危険性を高
め、操業炉における炉床よりの湯洩れは重大事故
につながる上、その補修にも長時間を要するた
め、非常に重要な操業管理項目の一つである。 Worn hearth bricks increase the risk of metal leakage inside the furnace, and leakage from the hearth in an operating furnace can lead to serious accidents, and it takes a long time to repair, so it is an extremely important operational management issue. This is one of the items.
通常炉床煉瓦上部は、Fe3O4を多く含んだコー
チング層により保護されているが、自溶製錬炉に
おいてランスパイプを併用した吹錬で溶湯の撹拌
が強い時には、このコーチング層が薄くなるた
め、炉床煉瓦の目地に溶湯が浸透して湯洩れの危
険性も考えられる。 Normally, the upper part of the hearth brick is protected by a coating layer containing a large amount of Fe 3 O 4 , but when the molten metal is stirred strongly during blowing using a lance pipe in a flash smelting furnace, this coating layer becomes thin. Therefore, there is a risk of molten metal penetrating into the joints of the hearth bricks and causing a leak.
本発明は前記した問題点を解消し、炉床煉瓦の
損傷を防ぐことのできる自溶製錬炉の操業方法を
提供することを目的とするものである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for operating a flash smelting furnace that can solve the above-mentioned problems and prevent damage to hearth bricks.
本発明はこの目的を達成するために、自溶製錬
炉のセトラー部から炉内に挿入されたランスパイ
プを経て鉱石、溶剤等の粉体原料を反応用気体と
共に高速で吹込む自溶製錬炉の操業方法におい
て、ランスパイプ先端近くの炉床直上の溶湯温度
を測定、測定された溶湯温度が予め設定された上
限値を超えないようにランスパイプからの吹込み
条件を調整して自溶製錬炉の操業を行うようにし
たものである。
In order to achieve this objective, the present invention has developed a self-smelting process in which powder raw materials such as ore and solvent are blown at high speed together with reaction gas from the settler part of a flash-smelting furnace through a lance pipe inserted into the furnace. In the operating method of a smelting furnace, the temperature of the molten metal directly above the hearth near the tip of the lance pipe is measured, and the injection conditions from the lance pipe are automatically adjusted so that the measured molten metal temperature does not exceed a preset upper limit. It is designed to operate a smelting and refining furnace.
以下本発明を詳細に説明する。 The present invention will be explained in detail below.
自溶製錬炉において従来のランスパイプを使用
しない状態では、セトラー内の溶湯の上部は高温
で、下部に行くにつれて温度が下がる傾向にあつ
たものが、ランスパイプを用いて鉱石、溶剤等の
粉体原料を反応用気体と共に高速で吹込む場合
は、撹拌の効果で溶湯上下の温度差がなくなり、
溶湯下部の温度が高くなるため、炉床煉瓦上部の
コーチング層が溶解し、炉床煉瓦が損傷する恐れ
がある。炉床煉瓦の損傷状態を把握するために、
通常炉床煉瓦内の数箇所に温度計を挿入し、常時
炉床煉瓦の温度を測定しているが、ランスパイプ
を使用した吹錬により、特にランスパイプ先端付
近の炉床温度の上昇をひき起こす傾向がある。 When a conventional lance pipe is not used in a flash smelting furnace, the upper part of the molten metal in the settler is high temperature, and the temperature tends to decrease as it goes to the lower part. When powder raw materials are blown in with reaction gas at high speed, the stirring effect eliminates the temperature difference between the top and bottom of the molten metal.
Since the temperature in the lower part of the molten metal becomes high, the coating layer on the upper part of the hearth brick may melt and the hearth brick may be damaged. In order to understand the damage condition of hearth bricks,
Normally, thermometers are inserted in several places inside the hearth brick to constantly measure the temperature of the hearth brick, but blowing using a lance pipe prevents the hearth temperature from rising particularly near the tip of the lance pipe. tends to occur.
発明者らは、種々調査研究の結果、ランスパイ
プ先端に近い炉床温度が、その直上の溶湯温度と
密接に関係していることを見出して本発明に到達
した。すなわちランスパイプを使用した吹錬中
に、ランスパイプ先端近くの炉床直上の溶湯温度
を測定し、この温度が予め定められた温度以上に
ならないようにランスパイプの吹錬条件を選定す
ることにより、ランスパイプ先端の近い炉床温度
の上昇を防ぐようにしたものである。 As a result of various research studies, the inventors discovered that the temperature of the hearth near the tip of the lance pipe is closely related to the temperature of the molten metal immediately above it, and thus arrived at the present invention. In other words, during blowing using a lance pipe, the temperature of the molten metal directly above the hearth near the tip of the lance pipe is measured, and the blowing conditions for the lance pipe are selected so that this temperature does not exceed a predetermined temperature. This is designed to prevent the temperature of the hearth near the tip of the lance pipe from rising.
炉床直上の溶湯温度が高くなる条件は、セトラ
ー部の溶湯の撹拌がよく行われている時で、ラン
スパイプからの吹込風速が早く、吹込物量の多い
時である。このため吹込物量を減少させないため
には、使用するランスパイプの直径を大にして吹
込風速を下げ、あるいはランスパイプの使用本数
を増加して吹込みを分散させることができる。 The conditions in which the temperature of the molten metal directly above the hearth is high are when the molten metal in the settler section is well stirred, the air velocity from the lance pipe is high, and the amount of material blown is large. Therefore, in order not to reduce the amount of material to be blown, the diameter of the lance pipe used can be increased to lower the blowing wind speed, or the number of lance pipes used can be increased to disperse the blowing.
また溶湯上部に存在するスラグ層は、粘性が高
く吹込み力を弱めるため、スラグ層の多い時には
撹拌力を抑えるが、少ない時には撹忰が良くなる
ための吹込風速及び吹込物量を下げ、炉床直上の
溶湯温度の上昇を防ぐことも必要である。 In addition, the slag layer present at the top of the molten metal has high viscosity and weakens the blowing force, so when the slag layer is large, the stirring force is suppressed, but when it is small, the blowing wind speed and amount of blowing material are lowered to improve the stirring, and the blowing force is lowered. It is also necessary to prevent the temperature of the molten metal directly above from rising.
第１図は本発明方法を実施するための自溶製錬
炉のセトラー部に挿入されたランスパイプと、溶
湯温度測定用の温度計の位置と、結果としての炉
床温度の測定位置を示した説明図である。図にお
いて、自溶製錬炉セトラー部１の天井煉瓦２に設
けられた孔から、ランスパイプ３がその先端が溶
湯上に位置するように挿入され、粉末原料が反応
用気体と共に吹込まれる。セトラー部１の炉床煉
瓦４上の溶湯は、比重差により上部はスラグ層５
に、下部はマツト層６に分離されている。ランス
パイプ先端近くの炉床直上の溶湯温度測定用の温
度計７が、セトラー部天井のランスパイプ挿入孔
近くに設けられた孔から、その先端が溶湯中の炉
床煉瓦４の近くまで挿入されている。炉床煉瓦４
内には炉の側面からその先端がランスパイプの直
下に位置するように温度計８が配置されている。 Figure 1 shows the lance pipe inserted into the settler section of a flash smelting furnace for carrying out the method of the present invention, the position of a thermometer for measuring the temperature of molten metal, and the position of measuring the resulting hearth temperature. FIG. In the figure, a lance pipe 3 is inserted through a hole provided in a ceiling brick 2 of a flash smelting furnace settler section 1 so that its tip is positioned above the molten metal, and powder raw material is blown in together with a reaction gas. The molten metal on the hearth brick 4 of the settler section 1 has a slag layer 5 at the top due to the difference in specific gravity.
In addition, the lower part is separated into a mat layer 6. A thermometer 7 for measuring the temperature of the molten metal directly above the hearth near the tip of the lance pipe is inserted through a hole provided near the lance pipe insertion hole in the ceiling of the settler section until its tip is near the hearth brick 4 in the molten metal. ing. hearth brick 4
Inside, a thermometer 8 is arranged from the side of the furnace so that its tip is located directly below the lance pipe.
第２図はランスパイプを使用しての吹錬を行つ
ている時と、いない時のセトラー部の溶湯の垂直
方向の温度分布の一例を示したものである。 FIG. 2 shows an example of the vertical temperature distribution of the molten metal in the settler section when blowing using a lance pipe is being performed and when there is no lance pipe.
この例ではシヤフト高さ８ｍ、セトラーの煉瓦
内側寸法で幅７ｍ、長さ20ｍの自溶製錬炉で、シ
ヤフト部からの鉱石処理量60t／Ｈで操業してい
る時と、さらにランスパイプを用いて吹込量2t／
Ｈ、ランスパイプ先端の高さは正常の湯面上より
１ｍ、反応空気量1500Nm3／Ｈ、ランスパイプ風
速190ｍ／ｓで吹込みを行つたものである。 In this example, a flash smelting furnace with a shaft height of 8 m, a settler brick inner dimension of 7 m in width, and a length of 20 m is operating at a throughput of 60 t/h of ore from the shaft. Injection amount: 2t/
H. The height of the tip of the lance pipe was 1 m above the normal hot water level, the reaction air amount was 1500 Nm 3 /H, and the lance pipe was blown at a wind speed of 190 m/s.
ランスパイプを使用していない時は、炉床煉瓦
直上の温度と最も高温のスラグ層の温度とは140
℃前後差があるが、吹込みのある時は溶湯が撹拌
され、溶湯上部と下部の温度差は大幅に減少し、
炉床直上の温度が上昇することが明らかとなつ
た。 When the lance pipe is not in use, the temperature directly above the hearth brick and the temperature of the hottest slag layer are 140
There is a difference around ℃, but when blowing, the molten metal is stirred and the temperature difference between the upper and lower parts of the molten metal is greatly reduced.
It became clear that the temperature directly above the hearth increased.
第３図は炉床より100mm上の溶湯温度と炉床煉
瓦温度（炉床より約900mm下）上昇速度との関係
を示した一例で、前記溶湯温度が上昇すると、炉
床煉瓦温度は上昇傾向を示していて、この例では
炉床から100mm上の溶湯温度を約1150℃以下に保
てば炉床煉瓦の温度上昇が防げる結果となる。 Figure 3 is an example showing the relationship between the temperature of the molten metal 100 mm above the hearth and the rate of increase in the temperature of the hearth bricks (approximately 900 mm below the hearth). As the molten metal temperature rises, the temperature of the hearth bricks tends to rise. In this example, if the temperature of the molten metal 100mm above the hearth is kept below about 1150℃, the temperature of the hearth bricks can be prevented from rising.
またこのようなランスパイプを使用して吹錬し
ている時の、セトラー部の他の位置での炉床煉瓦
温度を測定したところ、例えばシヤフト部直下
や、アツプテーク近くの直下温度については殆ん
ど変化が見られなかつた。 In addition, when we measured the hearth brick temperature at other locations in the settler section during blowing using such a lance pipe, we found that, for example, the temperature directly below the shaft section or near the uptake was almost negligible. No changes were observed.
炉床直上の溶湯温度の測定位置としては、炉床
上の100mm±20mm程度が適当である。 The appropriate position for measuring the molten metal temperature directly above the hearth is about 100 mm ± 20 mm above the hearth.
測定された溶湯温度の上限値を如何に定めるか
については、炉の大きさ、炉床煉瓦の種類、マツ
トの銅品位その他の条件により若干異なるが、マ
ツトの銅品位58〜62％では概ね1150℃前後であ
る。 How to determine the upper limit of the measured molten metal temperature varies slightly depending on the size of the furnace, the type of hearth brick, the copper grade of the matte, and other conditions, but it is approximately 1150 for a matte copper grade of 58 to 62%. It is around ℃.
実施例 １
シヤフト高さ８ｍ、セトラーの炉床内側寸法で
幅７ｍ、長さ20ｍの自溶炉で、シヤフトから鉱石
60t／Ｈを溶解し、さらにセトラー部の内径68mm
のランスパイプから2.0t／Ｈの製錬原料（自溶炉
発生のダストを主とし、これに少量の微粉炭を混
合したもの）を115ｍ／ｓの風速で吹込みを開始
したところ、ランスパイプ直下の炉床煉瓦内に埋
込まれた温度計が、従来720℃前後であつたもの
が、吹込み開始後780〜800℃に上昇し、さらに上
昇する傾向を示した。この間炉床より80mm上の溶
湯温度を測定したところ、従来1100〜1120℃であ
つたものが、ランスパイプの使用開始後20時間後
に1150℃になり、さらに40時間後に1180℃にな
り、これを７日間継続したところ炉床煉瓦温度は
800℃となり、さらに上昇する傾向を示した。そ
こでランスパイプを内径80mmのものに変更し、原
料吹込量は2.0t／Ｈのまゝ吹込風速を80ｍ／ｓと
したところ、炉床より80mm上の溶湯温度は1120℃
となり、以後この温度が継続され、炉床煉瓦は５
日後に780℃となり、これ以上の温度上昇は起こ
らなかつた。
Example 1 Ore is removed from the shaft in a flash-smelting furnace with a shaft height of 8 m, a width of 7 m in the inner dimensions of the settler hearth, and a length of 20 m.
60t/H is melted, and the inner diameter of the settler part is 68mm.
When we started blowing 2.0t/H of smelting raw material (mainly dust generated from flash furnace, mixed with a small amount of pulverized coal) from the lance pipe at a wind speed of 115m/s, the lance pipe A thermometer embedded in the hearth brick directly below the furnace, which had previously been around 720°C, rose to 780-800°C after the start of blowing, and showed a tendency to rise further. During this time, we measured the temperature of the molten metal 80mm above the hearth, which was previously 1100 to 1120℃, but it rose to 1150℃ 20 hours after the lance pipe started being used, and 1180℃ after 40 hours. After continuing for 7 days, the hearth brick temperature was
The temperature reached 800℃ and showed a tendency to increase further. Therefore, we changed the lance pipe to one with an inner diameter of 80 mm and set the blowing air speed to 80 m/s while keeping the raw material injection rate at 2.0 t/H.The temperature of the molten metal 80 mm above the hearth was 1120℃.
From then on, this temperature continues, and the hearth brick reaches 5
After a day, the temperature reached 780℃, and no further temperature rise occurred.
実施例 ２
実施例１と同じ自溶炉で、シヤフトから鉱石
60t／Ｈを溶解し、さらにセトラー部の内径68mm
のランスパイプから1.5t／Ｈの製錬原料を84ｍ／
ｓの風速で吹込みを行つていたところ、炉床より
80mm上の溶湯温度は1140℃であつた。この吹込条
件を変更して同じランスパイプで製錬原料2.5t／
Ｈを138ｍ／ｓの風速で吹込んだところ、炉床上
の溶湯温度の上昇が始まり、10時間後に上限設定
温度の1150℃になり、さらに上昇の傾向があつた
ので、風速を再び84ｍ／ｓに下げたところ８時間
後には1140〜1150℃の範囲が維持できたので、そ
の後はこの条件で操業を続けた。この時炉床温度
は770〜780℃で一定に保つことができた。Example 2 In the same flash furnace as in Example 1, ore was removed from the shaft.
60t/H is melted, and the inner diameter of the settler part is 68mm.
1.5t/H of smelting raw material from the lance pipe of 84m/
While blowing at a wind speed of s, a blow from the hearth
The temperature of the molten metal above 80 mm was 1140°C. By changing these injection conditions, the same lance pipe was used to produce 2.5 tons of smelting raw material/
When H was blown in at a wind speed of 138 m/s, the temperature of the molten metal on the hearth began to rise, and after 10 hours it reached the upper limit set temperature of 1150°C, and as it continued to rise further, the wind speed was increased to 84 m/s again. After 8 hours, the temperature was maintained within the range of 1140 to 1150°C, so the operation was continued under these conditions. At this time, the hearth temperature could be kept constant at 770-780°C.
以上詳細に説明したように本発明方法によれ
ば、自溶製錬炉のセトラーにランスパイプを使用
して製錬炉原料を吹込んで処理能力の増強を計る
場合に、ランスパイプ先端近くの炉床直上の溶湯
温度を必要に応じて測定し、この温度が予め設定
した温度以上にならないように吹込の条件を選定
して操業すれば適正な吹込条件を維持することが
でき、炉床温度の不必要な上昇を防ぎ、炉床煉瓦
の侵蝕が防げ安定した操業を維持することがで
き、且つ吹込条件の変更も容易に行うことができ
るので、その実用的効果は大なるものがある。
As explained in detail above, according to the method of the present invention, when a lance pipe is used to inject smelting furnace raw materials into the settler of a flash smelting furnace to increase processing capacity, the furnace near the tip of the lance pipe is If necessary, measure the temperature of the molten metal just above the floor, and select the blowing conditions so that the temperature does not exceed a preset temperature. It has great practical effects because it prevents unnecessary rise, prevents corrosion of the hearth bricks, maintains stable operation, and allows easy changes in blowing conditions.
第１図は本発明方法を実施するための自溶製錬
炉のセトラー部に挿入されたランスパイプと、溶
湯温度測定用温度計、炉床温度測定用温度計の位
置を示す説明図。第２図はセトラー部の溶湯の垂
直方向の温度分布の一例を示す図。第３図は炉床
上の溶湯温度と炉床煉瓦温度上昇速度との関係を
示す図である。
１……セトラー部、２……天井煉瓦、３……ラ
ンスパイプ、４……炉床煉瓦、５……スラグ層、
６……マツト層、７……溶湯温度測定用温度計、
８……炉床煉瓦内温度測定用温度計。
FIG. 1 is an explanatory diagram showing the positions of a lance pipe inserted into a settler section of a flash smelting furnace for carrying out the method of the present invention, a thermometer for measuring molten metal temperature, and a thermometer for measuring hearth temperature. FIG. 2 is a diagram showing an example of the vertical temperature distribution of the molten metal in the settler section. FIG. 3 is a diagram showing the relationship between the temperature of the molten metal on the hearth and the rate of increase in the temperature of the hearth bricks. 1... Settler part, 2... Ceiling brick, 3... Lance pipe, 4... Hearth brick, 5... Slag layer,
6...Matsuto layer, 7...Thermometer for measuring molten metal temperature,
8...Thermometer for measuring the temperature inside the hearth brick.
Claims (1)
たランスパイプを経て鉱石、溶剤等の粉体原料を
反応用気体と共に高速で吹込む自溶製錬炉の操業
方法において、ランスパイプ先端近くの炉床直上
の溶湯温度を測定し、測定された溶湯温度が予め
設定された上限値を超えないようにランスパイプ
からの吹込みを行うことを特徴とする自溶製錬炉
の操業方法。1 In the operating method of a flash smelting furnace in which powder raw materials such as ore and solvent are injected at high speed together with reaction gas through a lance pipe inserted into the furnace from the settler part of the furnace, the tip of the lance pipe is A method for operating a flash smelting furnace characterized by measuring the temperature of the molten metal directly above the nearby hearth and injecting the molten metal from a lance pipe so that the measured molten metal temperature does not exceed a preset upper limit. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20085587A JPS6447821A (en) | 1987-08-13 | 1987-08-13 | Method for operating autogoneous smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20085587A JPS6447821A (en) | 1987-08-13 | 1987-08-13 | Method for operating autogoneous smelting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6447821A JPS6447821A (en) | 1989-02-22 |
| JPH021898B2 true JPH021898B2 (en) | 1990-01-16 |
Family
ID=16431345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20085587A Granted JPS6447821A (en) | 1987-08-13 | 1987-08-13 | Method for operating autogoneous smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6447821A (en) |
-
1987
- 1987-08-13 JP JP20085587A patent/JPS6447821A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6447821A (en) | 1989-02-22 |
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