JPH02153804A - High-temperature treatment of mineral - Google Patents
High-temperature treatment of mineralInfo
- Publication number
- JPH02153804A JPH02153804A JP30697388A JP30697388A JPH02153804A JP H02153804 A JPH02153804 A JP H02153804A JP 30697388 A JP30697388 A JP 30697388A JP 30697388 A JP30697388 A JP 30697388A JP H02153804 A JPH02153804 A JP H02153804A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- metal oxide
- temperature
- metal oxides
- recovered
- 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
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 21
- 239000011707 mineral Substances 0.000 title claims abstract description 21
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 34
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 10
- 239000010419 fine particle Substances 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 239000002918 waste heat Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 2
- 229910001111 Fine metal Inorganic materials 0.000 claims 1
- 239000010881 fly ash Substances 0.000 abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 5
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- -1 Fe2O3) Chemical class 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 230000009172 bursting Effects 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 230000002000 scavenging effect Effects 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000004566 building material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 101100501250 Caenorhabditis elegans elo-3 gene Proteins 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012633 leachable Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Silicon Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は複数の金属酸化物を含有する鉱物、例えばフラ
イアッシュ（石炭微粉灰）、ケイ石などを高温下で処理
して鉱物の組成金属酸化物を分割して得る方法に関する
。[Detailed Description of the Invention] [Industrial Application Field] The present invention processes minerals containing a plurality of metal oxides, such as fly ash (pulverized coal ash), silica stone, etc. at high temperatures to reduce the composition metals of the minerals. This invention relates to a method of dividing and obtaining an oxide.
複数の酸化物を含有する鉱物とみられるフライアッシュ
は、ごく一部をセメントに混入して使用され、その大半
は埋立に使用されているが、溶出物があるため環境問題
と彦ることがあり、またケイ石等の原鉱石はミμで粉砕
して建材原料として使用されているが、建材原料組成は
鉱物組成によって決るため、均質な鉱物しか使用できず
、この量の確保と同時に輸送費も割高になる欠点のほか
、微粉砕費も必要であるという問題点があった。Fly ash, which is thought to be a mineral containing multiple oxides, is used by mixing a small portion with cement, and most of it is used in landfills, but it can pose an environmental problem due to leachables. In addition, raw ores such as silica stone are crushed in micro-mills and used as raw materials for building materials, but since the composition of raw materials for building materials is determined by the mineral composition, only homogeneous minerals can be used. In addition to the disadvantage that it is relatively expensive, there is also the problem that fine grinding costs are also required.
上述したように、複数の金属酸化物を含有する鉱物の有
効利用の技術は未だ確立していないのが現状である。そ
こで本発明はそのま−では有効利用の道の極めて狭い複
数の金属酸化物を含有する鉱物を合目的に処理して、有
効利用し得る材料を得ることのできる方法を提供しよう
とするものである。As mentioned above, the current state is that a technology for effectively utilizing minerals containing multiple metal oxides has not yet been established. Therefore, the present invention aims to provide a method that can process minerals containing multiple metal oxides, which until now have extremely limited possibilities for effective use, to obtain materials that can be used effectively. be.
本発明は炉内に各種金属酸化物を含有する鉱物粒子を燃
料および酸素とともにノズルから任意の時間噴出させ、
炉内温度を回収対象金属酸化物の任意の蒸気圧発生温度
に維持することＫより生成した金属酸化物の蒸気を炉外
に誘導し、急冷して金属酸化物の微粒子を分離回収する
第１工程と、上記第１工程の金属酸化物を分離回収後、
鉱物粒子の炉内への供給を停止し炉内温度を上記第１工
程にくらべ高い任意の温度に維持することにより生成す
る上記第１工程以外の金属酸化物の微粒子を上記第１工
程と同じ方法で少なくとも１回以上繰返して分離回収す
る第２工程と、上記第１工程と第２工程で回収された以
外の金属酸化物を炉底から分離回収する第３工程とから
なることを特徴とする鉱物の高温処理法である。The present invention allows mineral particles containing various metal oxides to be ejected from a nozzle together with fuel and oxygen in a furnace for an arbitrary period of time,
The first step is to maintain the temperature inside the furnace at an arbitrary vapor pressure generation temperature of the metal oxide to be recovered.The first step is to guide the metal oxide vapor generated from K to the outside of the furnace and rapidly cool it to separate and recover fine particles of the metal oxide. After separating and recovering the metal oxide from the first step,
Fine particles of metal oxide other than the first step, which are generated by stopping the supply of mineral particles into the furnace and maintaining the temperature inside the furnace at an arbitrary temperature higher than that in the first step, are the same as in the first step. a second step in which the method is repeated at least once to separate and recover; and a third step in which metal oxides other than those recovered in the first and second steps are separated and recovered from the bottom of the furnace. This is a high-temperature treatment method for minerals.
そして、本発明は上記構成の各工程から排出される廃熱
ガスを、炉に供給する燃料及び酸素の予熱用として利用
した後、ボイラに送って発電用として熱回収することを
好ましい実施態様とするものである。In a preferred embodiment of the present invention, waste heat gas discharged from each process of the above configuration is used for preheating fuel and oxygen to be supplied to the furnace, and then sent to a boiler to recover heat for power generation. It is something to do.
本発明は複数の金属酸化物を含有する鉱物を、組成金属
酸化物の蒸気圧の差を利用して任意の金属酸化物組成材
料を分離回収するため、得られる金属酸化物は高純度か
つ、サブミクロン粒径の粒子として得られ、夫々の金属
酸化物の種類に応じて広範囲の用途がひらける。The present invention separates and recovers minerals containing a plurality of metal oxides into any metal oxide composition material by utilizing the difference in vapor pressure of the composition metal oxides, so the obtained metal oxides have high purity and It is obtained as submicron-sized particles and has a wide range of uses depending on the type of metal oxide.
また、本発明の各工程から排出される廃熱ガスは廃熱回
収装置、例えばボイラに送って有効に廃熱をエネμギ、
例えば電気に変えることができ熱的経済性にも優れる。In addition, the waste heat gas discharged from each process of the present invention is sent to a waste heat recovery device, such as a boiler, to effectively convert waste heat into energy μ.
For example, it can be converted into electricity and has excellent thermal economy.
以下、本発明の一実施例を第１図によって説明する。 An embodiment of the present invention will be described below with reference to FIG.
鉱物の粒子（例えばフライアッシュ）１をホッパー２か
ら高温炉３内に燃料４および酸素５といっしよく供給し
高温炉３内の温度を１，８００〜２，０００℃に維持す
ると、フライアッシュ中のｙｅ、ｏ、 （蒸気圧１０
−” ａｔｍ ）は蒸気となり、冷却部６で冷却用空気
７によって急冷された後、サイクロンセパレータ８でＩ
Ｆｅ、Ｏ，の微粒子が捕集され、製品Ｆｅ１Ｏｊ９とし
て回収される。サイクロンセパレータ８からの廃ガス１
ｏはボイラ１１に供給する。（第１工程）
次に鉱物粒子の炉内への供給を停止した後、炉３内温度
を２３００〜２５ｏｏ℃に維持すると、フライアッシュ
中の８ｆｏｇ（蒸気圧１０−！ａｔｍ ）は蒸気となり
、冷却部６で冷却用空９Ｃ７によって急冷された後、サ
イクロンセパレータ１２でｓｔｏ、の微粒子が捕集され
、製品８１０゜１３として回収される。サイクロンセパ
レータ１２からの廃ガス１４はボイラ１１に供給する。When mineral particles (for example, fly ash) 1 are supplied together with fuel 4 and oxygen 5 from the hopper 2 into the high temperature furnace 3 and the temperature inside the high temperature furnace 3 is maintained at 1,800 to 2,000°C, the fly ash ye, o, (vapor pressure 10
-"atm) becomes steam, and after being rapidly cooled by cooling air 7 in the cooling section 6, it is turned into steam in the cyclone separator 8.
Fine particles of Fe, O, are collected and recovered as product Fe1Oj9. Waste gas 1 from cyclone separator 8
o is supplied to the boiler 11. (First step) Next, after stopping the supply of mineral particles into the furnace, if the temperature inside the furnace 3 is maintained at 2300 to 250°C, 8 fog (vapor pressure 10-!atm) in the fly ash becomes steam, After being rapidly cooled by the cooling air 9C7 in the cooling section 6, fine particles of sto are collected by the cyclone separator 12 and recovered as a product 810°13. The waste gas 14 from the cyclone separator 12 is fed to the boiler 11.
（第２工程）
次にフライアッシュ中のＴｔＯ，、ＯａＯを含むＡｋＯ
ｓ （蒸気圧１０−” ａｔｍ ）は炉底から微粒子
として捕集部１５で捕集され、製品人ｔ＠０．１６とし
て回収される。捕集部１５から排出される廃熱ガス１７
は熱交換器１８で燃料４および酸素５と熱交換されたの
ちボイラ１１に供給、熱回収される。（第３工程）
なお、上記実施例は第１工程で？ｅｌＯ３を、第２工程
でｓ ｔ ｏ、を製品として回収した例であつ九が、第
２工程を複数回繰υ返すことにより、純度の高い各種の
酸化物、例えばＭｇＯ、（１！ａｏ、Ｔ ｌ ０１ ｔ
Ａ４０Ｈ等を得ることもできる。(Second step) Next, TtO, AkO containing OaO in the fly ash
s (vapor pressure 10-" atm) is collected from the bottom of the furnace as fine particles in the collection section 15 and recovered as a product t@0.16. Waste heat gas 17 discharged from the collection section 15
After being heat exchanged with fuel 4 and oxygen 5 in a heat exchanger 18, it is supplied to a boiler 11, where the heat is recovered. (Third step) In addition, the above example is the first step? In this example, elO3 is recovered as a product in the second step. By repeating the second step multiple times, various oxides of high purity, such as MgO, (1!ao, T l 01 t
A40H etc. can also be obtained.
本発明により、高純度の金属酸化物の超微粒子を製造す
ることができ、それ自体、用途の少ない鉱物の有効利用
を計ることができる。According to the present invention, ultrafine particles of highly pure metal oxides can be produced, and as such, it is possible to effectively utilize minerals that have few uses.
さらに本発明の処理加工熱源はボイラに供給し、発電用
などとして回収されるため省エネルギーをはかることが
できる。Furthermore, the processing heat source of the present invention is supplied to a boiler and recovered for use in power generation, etc., so energy can be saved.
第１図は本発明の一実施例を説明するための概略図であ
る。FIG. 1 is a schematic diagram for explaining one embodiment of the present invention.
Claims (2)
および酸素とともにノズルから任意の時間噴出させ、炉
内温度を回収対象金属酸化物の任意の蒸気圧発生温度に
維持することにより生成した金属酸化物の蒸気を炉外に
誘導し、急冷して金属酸化物の微粒子を分離回収する第
１工程と、上記第１工程の金属酸化物を分離回収後、鉱
物粒子の炉内への供給を停止し炉内温度を上記第１工程
にくらべ高い任意の温度に維持することにより生成する
上記第１工程以外の金属酸化物の微粒子を上記第１工程
と同じ方法で少なくとも１回以上繰返して分離回収する
第２工程と、上記第１工程と第２工程で回収された以外
の金属酸化物を炉底から分離回収する第３工程とからな
ることを特徴とする鉱物の高温処理法。(1) Generated by ejecting mineral particles containing various metal oxides from a nozzle together with fuel and oxygen for a desired period of time in a furnace, and maintaining the temperature inside the furnace at a desired vapor pressure generation temperature of the metal oxide to be recovered. The first step is to guide the metal oxide vapor out of the furnace and rapidly cool it to separate and recover fine metal oxide particles.After separating and recovering the metal oxide in the first step, the mineral particles are transferred into the furnace. Repeating the same method as the first step at least once to produce fine particles of metal oxide other than the first step by stopping the supply and maintaining the furnace temperature at an arbitrary temperature higher than the first step. A method for high-temperature treatment of minerals, comprising: a second step of separating and recovering metal oxides from the furnace bottom; and a third step of separating and recovering metal oxides other than those recovered in the first and second steps from the bottom of the furnace.
回収する特許請求の範囲（１）記載の鉱物の高温処理法
。(2) The method for high-temperature treatment of minerals according to claim (1), wherein waste heat gas discharged in each process is sent to a boiler for heat recovery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30697388A JPH02153804A (en) | 1988-12-06 | 1988-12-06 | High-temperature treatment of mineral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30697388A JPH02153804A (en) | 1988-12-06 | 1988-12-06 | High-temperature treatment of mineral |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02153804A true JPH02153804A (en) | 1990-06-13 |
Family
ID=17963495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30697388A Pending JPH02153804A (en) | 1988-12-06 | 1988-12-06 | High-temperature treatment of mineral |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02153804A (en) |
-
1988
- 1988-12-06 JP JP30697388A patent/JPH02153804A/en active Pending
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