JPH01176003A - Apparatus for treating powder material in fluidized bed - Google Patents
Apparatus for treating powder material in fluidized bedInfo
- Publication number
- JPH01176003A JPH01176003A JP62333002A JP33300287A JPH01176003A JP H01176003 A JPH01176003 A JP H01176003A JP 62333002 A JP62333002 A JP 62333002A JP 33300287 A JP33300287 A JP 33300287A JP H01176003 A JPH01176003 A JP H01176003A
- Authority
- JP
- Japan
- Prior art keywords
- iron powder
- powder
- chamber
- processing
- treating
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title abstract description 4
- 238000005192 partition Methods 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 15
- 238000011282 treatment Methods 0.000 claims abstract description 10
- 238000005243 fluidization Methods 0.000 claims description 15
- 238000009700 powder processing Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 54
- 238000007664 blowing Methods 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract 2
- 230000002250 progressing effect Effects 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 230000003647 oxidation Effects 0.000 description 12
- 238000007254 oxidation reaction Methods 0.000 description 12
- 239000002245 particle Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011143 downstream manufacturing Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、たとえば転炉ダストから回収された鉄粉の表
面を酸化・還元する場合のように、流動状態にある粉体
に処理を施す流動層粉体処理装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to processing powder in a fluid state, such as when oxidizing and reducing the surface of iron powder recovered from converter dust. The present invention relates to a fluidized bed powder processing device.
転炉等の溶鋼処理容器で発生したダストは、たとえばベ
ンチコリースクラバー等の湿式集塵機によって排ガスと
分離される。そして、ダストに含まれている鉄分は、磁
選機でスラグ等の非金属物質と分離され、更に磨鉱によ
って表面に付着している酸化物やスケール等の分離され
る。このようにして得ら、れた鉄粉は、緻密で純度９５
％程度の極めて品位の高いものであり、粉末冶金、ショ
ツトブラスト、磁粉探傷、溶接棒、切断用鉄粉等の各種
用途に使用されている。Dust generated in a molten steel processing vessel such as a converter is separated from exhaust gas by a wet dust collector such as a bench core scrubber. Then, the iron contained in the dust is separated from non-metallic substances such as slag by a magnetic separator, and the oxides, scales, etc. attached to the surface are further separated by grinding ore. The iron powder obtained in this way is dense and has a purity of 95%.
%, and is used for various purposes such as powder metallurgy, shot blasting, magnetic particle testing, welding rods, and iron powder for cutting.
ところで、表面に付着している酸化物やスケール等を分
離する磨鉱工程で、鉄粉粒子は、その表面が平滑で突起
の少ない球状又は球状に近い形状になる。そのため、得
られた鉄粉の表面活性が低く、たとえば焼結原料として
使用する場合、鉄粉粒子相互の結合が円滑に進行せず、
焼結性に劣るものとなる。この鉄粉粒子の表面活性を向
上させる手段としては、酸化・還元により表面層を活性
度の高い多孔質にすることが考えられる。また、処理対
象が粉粒状の鉄粉であることから、酸化及び還元を流動
層式の処理槽で行うことが考えられる。By the way, in the polishing process to separate oxides, scale, etc. adhering to the surface, the iron powder particles have a smooth surface and a spherical or nearly spherical shape with few protrusions. Therefore, the surface activity of the obtained iron powder is low, and when used as a sintering raw material, for example, the bonding between iron powder particles does not proceed smoothly.
This results in poor sinterability. One way to improve the surface activity of the iron powder particles is to make the surface layer porous with high activity through oxidation and reduction. Furthermore, since the object to be treated is granular iron powder, it is conceivable to perform the oxidation and reduction in a fluidized bed type treatment tank.
他方、流動層式の処理槽で粉粒体を処理するものとして
は、特開昭５７−９８６１５号公報で提案された石炭流
動層式還元製鉄装置が知られている。この装置において
は、薄型の流動層式還元反応炉を同様な形状をもつ流動
層式燃焼加熱室とサンドウィッチ状に配列し、還元反応
炉に粉炭と粉粒状鉄鉱石を投入して流動状態に維持する
。そして、燃焼加熱室の熱量を仕切り壁を介して還元反
応炉にある粉粒状鉄鉱石に与え、鉄鉱石の還元を行って
いる。On the other hand, a coal fluidized bed type reduction iron making apparatus proposed in Japanese Patent Application Laid-Open No. 57-98615 is known as a device for treating granular materials in a fluidized bed type treatment tank. In this equipment, a thin fluidized bed reduction reactor is arranged in a sandwich shape with a similarly shaped fluidized bed combustion heating chamber, and powdered coal and granular iron ore are charged into the reduction reactor and maintained in a fluidized state. do. Then, the amount of heat from the combustion heating chamber is applied to the powdery iron ore in the reduction reactor through the partition wall, thereby reducing the iron ore.
この流動層式の装置で粉体を処理するとき、処理槽内に
おける粉体の滞留時間を制御することが必要となる。と
ころが、例えば滞留時間を長くするために処理槽の内容
積を単に大きくしただけでは、被処理材料である粉体を
流動化させるために、ガスの吹込み圧を大きくするか、
あるいは、流動ガスの流量を大きくすることが必要にな
る。また、小粒径の鉄粉については飛散あるいは排出口
へのショート・パスは防止できない。When processing powder with this fluidized bed type device, it is necessary to control the residence time of the powder in the processing tank. However, simply increasing the internal volume of the processing tank in order to lengthen the residence time, for example, does not mean increasing the gas blowing pressure or increasing the gas blowing pressure to fluidize the powder material to be processed.
Alternatively, it becomes necessary to increase the flow rate of the fluidizing gas. Furthermore, it is not possible to prevent small-sized iron powder from scattering or taking a short path to the discharge port.
また、流動層式の処理槽の一般的な問題とじてではある
が、処理が進んだ粉体だけを連続的に取り出すことが困
難である。たとえば、連続的な取出しを前提として操業
する場合、取出し口近傍にある粉体が処理の進行状態如
何に拘らず排出されることになる。特に微粉は流動層表
面をショート・パスして排出される。In addition, this is a common problem with fluidized bed processing tanks, and it is difficult to continuously take out only the powder that has been processed. For example, when operating on the premise of continuous take-out, the powder near the take-out port will be discharged regardless of the progress of the process. In particular, fine powder is discharged through a short path on the surface of the fluidized bed.
そこで、本発明は、処理槽の内部に仕切り壁及びダスト
衝突板を配置することにより、粉体の滞留時間を制御し
て処理能力を向上させると共に、処理が進んだ粉体を効
率良く取り出すことを目的とする。Therefore, the present invention improves the processing capacity by controlling the residence time of the powder by arranging a partition wall and a dust collision plate inside the processing tank, and also makes it possible to efficiently take out the processed powder. With the goal.
本発明の流動層粉体処理装置は、その目的を達成するた
め、粉体原料投入口から処理原料排出口に向かった方向
に直交して立設する仕切り板を流動化板の上方にある処
理槽の内部空間に配置し、前記仕切り板と前記流動化板
及び前記処理槽の天井との間に間隙を設けるとともに、
前記天井と仕切り板との間隙を覆うダスト衝突板を設け
たことを特徴とする。In order to achieve the objective, the fluidized bed powder processing apparatus of the present invention has a partition plate installed perpendicularly in the direction from the powder raw material input port to the processing raw material discharge port. disposed in the internal space of the tank, providing a gap between the partition plate and the fluidization plate and the ceiling of the processing tank;
The present invention is characterized in that a dust collision plate is provided to cover the gap between the ceiling and the partition plate.
以下、図面を参照しながら、転炉ダストから回収した鉄
粉を流動層式で酸化・還元する実施例により、本発明の
特徴を具体的に説明する。Hereinafter, with reference to the drawings, the features of the present invention will be specifically explained using an example in which iron powder recovered from converter dust is oxidized and reduced by a fluidized bed method.
第１図は、本実施例における流動層粉体処理装置の内部
構造を示す概略図である。FIG. 1 is a schematic diagram showing the internal structure of the fluidized bed powder processing apparatus in this example.
処理槽本体１は、鉄粉投入口２から排出口３に向かって
延びた薄型構造になっている。そして、処理槽本体１の
内部は、水平方向に配置された流動化板４で仕切られて
いる。流動化板４の下方にある空間はガス吹込み室５と
され、流動化板４よりも上方の空間が流動化室６とされ
ている。この流動化室６には、鉄粉投入口２から排出口
３に向かう方向に直交して複数の仕切り板７を立設して
いる。仕切り板７と流動化板４及び流動化室６の天井と
の間には若干の空隙が設けられており、この仕切り板７
と流動化板４の間隙を経由して処理槽本体１に投入され
た鉄粉が鉄粉投入口２から排出口３に向かって流動状態
で流れる。また、微粉の一部はガスとともに仕切り板６
と処理槽本体１の天井との間の間隙を通過するが、ダス
ト衝突板１７によって微粉は落下し、流動層内に滞留す
る。The processing tank body 1 has a thin structure extending from an iron powder inlet 2 toward an outlet 3. The inside of the processing tank body 1 is partitioned by a fluidization plate 4 arranged horizontally. The space below the fluidizing plate 4 is a gas blowing chamber 5, and the space above the fluidizing plate 4 is a fluidizing chamber 6. A plurality of partition plates 7 are provided in the fluidization chamber 6 so as to be perpendicular to the direction from the iron powder inlet 2 to the outlet 3. A slight gap is provided between the partition plate 7 and the fluidization plate 4 and the ceiling of the fluidization chamber 6.
The iron powder introduced into the processing tank body 1 via the gap between the iron powder inlet 2 and the fluidizing plate 4 flows in a fluid state from the iron powder inlet 2 toward the outlet 3. In addition, some of the fine powder is removed from the partition plate 6 along with the gas.
The fine powder passes through the gap between the surface and the ceiling of the processing tank body 1, but the fine powder falls by the dust collision plate 17 and stays in the fluidized bed.
この処理槽本体１は、第２図に示すように、同様な薄型
形状をもつ流動層加熱室８とサンドウィッチ状に重ねら
れている。流動層加熱室８では、吹き込まれた熱風によ
って、たとえばセラッミクス粒子等の熱担体９が流動状
態で加熱される。そして、この熱担体９に与えられた熱
は、流動層加熱室８と流動化室６との間の層壁ｌＯを介
して、流動化室６内にある鉄粉に伝えられる。このとき
の熱伝導を良好にするため、層壁１０としてステンレス
鋼等の金属板を使用することが好ましい。As shown in FIG. 2, this processing tank body 1 is stacked in a sandwich-like manner with a fluidized bed heating chamber 8 having a similar thin shape. In the fluidized bed heating chamber 8, a heat carrier 9 such as ceramic particles is heated in a fluidized state by the blown hot air. The heat applied to the heat carrier 9 is transmitted to the iron powder in the fluidization chamber 6 via the layer wall lO between the fluidized bed heating chamber 8 and the fluidization chamber 6. In order to improve heat conduction at this time, it is preferable to use a metal plate such as stainless steel as the layer wall 10.
処理槽本体１内で処理される鉄粉１１は、ホッパー１２
から鉄粉投入口２を経て処理槽本体１に送り込まれる。The iron powder 11 processed in the processing tank body 1 is transferred to a hopper 12.
The iron powder is fed into the treatment tank main body 1 through the iron powder inlet 2.
他方、鉄粉１１を処理する酸化性ガス又は還元性ガス等
の処理ガス１３は、処理槽本体１の下部に設けられたガ
ス吹込み口１４からガス吹込み室５に吹き込まれる。ガ
ス吹込み室５には適宜の整流器（図示せず）が配置され
ており、これによって流動化板４の全面にわたって均一
な流量分布をもつ流れとして処理ガス１３を流動化室６
に送り込み、処理槽本体１内にある鉄粉１１を流動化す
る。On the other hand, a processing gas 13 such as an oxidizing gas or a reducing gas for processing the iron powder 11 is blown into the gas blowing chamber 5 from a gas blowing port 14 provided at the bottom of the processing tank body 1 . A suitable rectifier (not shown) is disposed in the gas blowing chamber 5, which allows the process gas 13 to flow into the fluidizing chamber 6 as a flow having a uniform flow rate distribution over the entire surface of the fluidizing plate 4.
The iron powder 11 in the treatment tank body 1 is fluidized.
この整流器としては、鉄粉投入口２側で圧損が大きく、
排出口３側で圧損が小さくなるような開口部を持たせる
ことにより、流動化室６の全長にわたって流量分布を均
一化させることができる。This rectifier has a large pressure loss on the iron powder inlet 2 side,
By providing an opening that reduces pressure loss on the discharge port 3 side, the flow rate distribution can be made uniform over the entire length of the fluidization chamber 6.
このとき、処理槽本体１が、鉄粉投入口２から排出口３
に向かった方向に関し仕切り板７によって複数の処理区
分６ａ、 ６ｂ、 ６ｃ、 ６ｄ、 ６ｅに区画されて
いる。そして、処理区分６ａにおいである程度まで酸化
、還元等の処理を受けた鉄粉１１が、下流側の処理区分
５ｂ、 ５ｃ、 ５６に順次流動する。そして、最下流
にある処理区分６ｅで処理された後、排出口３から排出
容器１５又は次工程に送られる。また、鉄粉１１を処理
した後の処理ガス１３は、流動化室６の天井に設けられ
ている排気口１６から系外に排気される。At this time, the processing tank body 1 is moved from the iron powder inlet 2 to the outlet 3.
It is divided into a plurality of processing sections 6a, 6b, 6c, 6d, and 6e by a partition plate 7 in the direction toward. The iron powder 11 that has been subjected to oxidation, reduction, etc. to some extent in the processing section 6a flows sequentially to the downstream processing sections 5b, 5c, and 56. After being processed in the most downstream processing section 6e, it is sent from the discharge port 3 to the discharge container 15 or to the next process. Further, the processing gas 13 after processing the iron powder 11 is exhausted to the outside of the system through an exhaust port 16 provided on the ceiling of the fluidization chamber 6.
このように仕切り板７で仕切った処理区分５ａ。The processing section 5a is partitioned by the partition plate 7 in this way.
６ｂ、 ６ｃ、 ６ｄ、 ６ｅのそれぞれにおいて、は
ぼ同一の条件下で酸化、還元等の処理が行われるため、
排出口３から取り出される鉄粉１１は、均質な程度にま
で処理されたものとなる。また、仕切り板７によって、
流動化室６内における鉄粉１１の滞留時間を長くするこ
とができるので、鉄粉１１と処理ガス１３との接触が充
分に行われ、処理ガス１３を効果的に消費することがで
きると共に、鉄粉１１に対する酸化、還元等の高度な処
理を行うことができる。In each of 6b, 6c, 6d, and 6e, treatments such as oxidation and reduction are performed under almost the same conditions, so
The iron powder 11 taken out from the discharge port 3 has been processed to a homogeneous degree. Moreover, by the partition plate 7,
Since the residence time of the iron powder 11 in the fluidization chamber 6 can be increased, sufficient contact between the iron powder 11 and the processing gas 13 can be made, and the processing gas 13 can be effectively consumed. Advanced treatments such as oxidation and reduction can be performed on the iron powder 11.
たとえば、窒素をベースに酸素５容量％、水蒸気５容量
％の組成をもち温度６００ ℃の酸化性ガスを空塔速度
０．４〜０．５ （ｍ／ｓ）で処理槽本体１に吹き込む
ことにより、平均粒度９０ＡＯ１の鉄粉１１を表面酸化
したところ、各処理区分６ａ、 ６ｂ、 ６ｃ、 ６ｄ
、 ６ｅにおける平均酸化度は、次の通りであった。た
だし、ここでいう酸化度とは、形成された表面酸化層の
鉄粉の重量に対する割合（％）を示す。For example, an oxidizing gas having a composition of 5% by volume of oxygen and 5% by volume of water vapor based on nitrogen and a temperature of 600°C is blown into the treatment tank body 1 at a superficial velocity of 0.4 to 0.5 (m/s). When iron powder 11 with an average particle size of 90AO1 was surface oxidized by
The average oxidation degree in , 6e was as follows. However, the degree of oxidation here refers to the ratio (%) of the formed surface oxidized layer to the weight of the iron powder.
処理区分 ６ａ ６ｂ ６ｃ ６ｄ
６ｅ平均酸化度 ５ １０ １５ １８
２０また、排出口３から排出された鉄粉１１の酸化度
のバラツキは、偏差３０％であった。Processing category 6a 6b 6c 6d
6e Average oxidation degree 5 10 15 18
20 Furthermore, the variation in the degree of oxidation of the iron powder 11 discharged from the discharge port 3 was 30%.
これに対し、仕切り板７及びダスト衡突板１７を設けず
に一つの流動化室６で鉄粉１１を同様な条件下で表面酸
化したところ、排出口３から排出された鉄粉１１の平均
酸化度は２０％であり、また酸化度のバラツキは偏差１
００ ％であった。On the other hand, when iron powder 11 was surface oxidized under similar conditions in one fluidization chamber 6 without providing partition plate 7 and dust balancing plate 17, the average oxidation of iron powder 11 discharged from discharge port 3 The degree of oxidation is 20%, and the variation in the degree of oxidation is 1 deviation.
It was 00%.
また、排出口３から排出された鉄粉１１の粒度分布を示
したものが第３図である。Further, FIG. 3 shows the particle size distribution of the iron powder 11 discharged from the discharge port 3.
ダスト衝突板１７を設置しなかった場合、−４４ｓ以下
の微粉がほとんどなくなり、小粒の比率が小さくなって
いることがわかる。It can be seen that when the dust collision plate 17 was not installed, there were almost no fine particles of −44 s or less, and the ratio of small particles was small.
なお、以上の例においては、転炉ダストから回収された
鉄粉を表面酸化する場合を説明した。しかし、本発明の
粉体処理装置は、同様にして表面酸化された鉄粉を還元
し、その表面を多孔質にすることに対しても適用するこ
とができる。このようにして改質された鉄粉は、表面活
性に富む多孔質表面層と中実な内層をもっている。その
ため、これをたとえば粉末冶金原料として使用するとき
、焼結性に優れたものとなり、寸法精度及び強度の良好
な焼結体が得られる。また、鉄粉の改質以外にも、脱炭
、乾燥等の粉体の処理に使用することができる。In addition, in the above example, the case where the surface oxidation of the iron powder recovered from converter dust was explained. However, the powder processing apparatus of the present invention can be similarly applied to reducing surface-oxidized iron powder to make the surface porous. Iron powder modified in this way has a porous surface layer rich in surface activity and a solid inner layer. Therefore, when this is used, for example, as a raw material for powder metallurgy, it has excellent sinterability, and a sintered body with good dimensional accuracy and strength can be obtained. In addition to modifying iron powder, it can also be used for powder processing such as decarburization and drying.
また、第１図及び第２図では、薄型にした処理槽本体１
を流動層加熱室８とサンドウィッチ状に配列していた状
態を示している。しかし、処理槽本体１としては、この
形状に拘束されるものではなく、たとえば厚みの大きな
箱状又は円筒状にして、その内部を仕切り板７で仕切る
ようにしたものであっても良い。In addition, in FIGS. 1 and 2, the processing tank main body 1 is made thinner.
This shows a state in which they are arranged in a sandwich shape with the fluidized bed heating chamber 8. However, the processing tank body 1 is not limited to this shape, and may be, for example, a thick box or cylindrical shape whose interior is partitioned by a partition plate 7.
以上に説明したように、本発明においては、仕切り板に
より流動化室の内部を、粉体投入口から排出口に向けて
複数の処理区分に区画している。As explained above, in the present invention, the interior of the fluidization chamber is divided into a plurality of processing sections from the powder inlet to the outlet by the partition plate.
そして、投入された粉体は、これらの処理区分において
段階的に高度な処理を受け、排出口から排出される。し
たがって、不充分な処理を受けた粉体が処理済みの粉体
に混入して排出されることがなく、排出口から取り出さ
れた粉体は均質なものとなる。また、流動化室内におけ
る粉体の滞留時間を仕切り板によって長くできるため、
処理効率の改善も図られる。また、天井と仕切り板との
間隙を覆うダスト衝突板によって、微粉が排出口から排
出されることもない。Then, the introduced powder undergoes advanced processing in stages in these processing sections, and is discharged from the discharge port. Therefore, the powder that has been insufficiently treated will not be mixed with the treated powder and discharged, and the powder taken out from the discharge port will be homogeneous. In addition, since the residence time of the powder in the fluidization chamber can be extended by the partition plate,
Processing efficiency will also be improved. Further, the dust collision plate covering the gap between the ceiling and the partition plate prevents fine powder from being discharged from the discharge port.
第１図は本発明実施例の粉体処理装置を示す概略図であ
り、第２図はその粉体処理装置を流動層加熱室と交互に
サンドウィッチ状に配列した状態を示し、第３図は排出
口から排出された鉄粉の粒度分布を示す。
特許出願人 新日本製鐵 株式會社代 理 人
小 堀 益（ほか２名）第 ！ 図
弓口
第２図
１゜
第３図
怠棧（μｍ）FIG. 1 is a schematic diagram showing a powder processing apparatus according to an embodiment of the present invention, FIG. 2 shows a state in which the powder processing apparatus is arranged in a sandwich pattern alternately with fluidized bed heating chambers, and FIG. This shows the particle size distribution of iron powder discharged from the discharge port. Patent applicant Nippon Steel Corporation Representative
Masu Kobori (and 2 others) No. Figure Yuguchi Figure 2 Figure 1゜ Figure 3 Lack (μm)
Claims (1)
に直交して立設する仕切り板を流動化板の上方にある処
理槽の内部空間に配置し、前記仕切り板と前記流動化板
及び前記処理槽の天井との間に間隙を設けるとともに、
前記天井と仕切り板との間隙を覆うダスト衝突板を設け
たことを特徴とする流動層粉体処理装置。1. A partition plate that stands perpendicular to the direction from the powder raw material input port to the processing raw material discharge port is arranged in the internal space of the processing tank above the fluidization plate, and the partition plate and the fluidization plate and providing a gap between the treatment tank and the ceiling of the treatment tank,
A fluidized bed powder processing apparatus characterized in that a dust collision plate is provided to cover the gap between the ceiling and the partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62333002A JPH01176003A (en) | 1987-12-28 | 1987-12-28 | Apparatus for treating powder material in fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62333002A JPH01176003A (en) | 1987-12-28 | 1987-12-28 | Apparatus for treating powder material in fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01176003A true JPH01176003A (en) | 1989-07-12 |
Family
ID=18261189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62333002A Pending JPH01176003A (en) | 1987-12-28 | 1987-12-28 | Apparatus for treating powder material in fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01176003A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016688A (en) * | 2004-05-31 | 2006-01-19 | Jfe Steel Kk | Finish-heat treatment method for iron powder and apparatus therefor |
| JP2018096656A (en) * | 2016-12-16 | 2018-06-21 | 株式会社Ihi | Fluidized bed system |
-
1987
- 1987-12-28 JP JP62333002A patent/JPH01176003A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016688A (en) * | 2004-05-31 | 2006-01-19 | Jfe Steel Kk | Finish-heat treatment method for iron powder and apparatus therefor |
| JP2018096656A (en) * | 2016-12-16 | 2018-06-21 | 株式会社Ihi | Fluidized bed system |
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