JPS63134008A - Method for removing water in particulate matter - Google Patents
Method for removing water in particulate matterInfo
- Publication number
- JPS63134008A JPS63134008A JP28001286A JP28001286A JPS63134008A JP S63134008 A JPS63134008 A JP S63134008A JP 28001286 A JP28001286 A JP 28001286A JP 28001286 A JP28001286 A JP 28001286A JP S63134008 A JPS63134008 A JP S63134008A
- Authority
- JP
- Japan
- Prior art keywords
- water
- powder
- polymer compound
- particulate matter
- high molecular
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 12
- 239000013618 particulate matter Substances 0.000 title abstract 6
- 239000000843 powder Substances 0.000 claims abstract description 40
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims description 31
- 229920000642 polymer Polymers 0.000 claims description 30
- 239000008187 granular material Substances 0.000 claims description 13
- 239000000696 magnetic material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims 2
- 239000003245 coal Substances 0.000 abstract description 13
- 239000002893 slag Substances 0.000 abstract description 12
- 230000018044 dehydration Effects 0.000 abstract description 6
- 238000006297 dehydration reaction Methods 0.000 abstract description 6
- 239000006148 magnetic separator Substances 0.000 abstract description 4
- 239000003463 adsorbent Substances 0.000 abstract description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 abstract description 2
- 229920000609 methyl cellulose Polymers 0.000 abstract description 2
- 239000001923 methylcellulose Substances 0.000 abstract description 2
- 238000001035 drying Methods 0.000 description 8
- 239000006096 absorbing agent Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、粉粒体中に含有する水分を効率よく分離する
方法に関するものである。さらに詳しくいえば、本発明
は温度により親水性から疎水性へと可逆的に変化しうる
高分子化合物を吸水剤として用い、その温度による性質
の変化を利用して、粉粒体中に含有する水分を効率よく
よく分離する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for efficiently separating moisture contained in powder or granules. More specifically, the present invention uses a polymer compound that can reversibly change from hydrophilic to hydrophobic depending on temperature as a water absorbing agent, and utilizes the change in properties depending on temperature to contain it in powder or granules. The present invention relates to a method for efficiently and effectively separating water.
粉粒体中の水分を低減することが必要とされる分野は数
多く存在する。例えば製鉄業においては粉鉱石、粉炭、
コークス、ダスト、水砕スラグ等がある。There are many fields in which it is necessary to reduce moisture in powder and granular materials. For example, in the steel industry, fine ore, powdered coal,
Includes coke, dust, granulated slag, etc.
従来このような粉粒子状の脱水方法としては天日乾燥法
、熱風接触による乾燥法、吸水剤による乾燥法等がある
。しかし天日乾燥法は気候条件に左右され、乾燥時間が
ばらつき、かつ長時間の乾燥時間を必要とする。熱風に
よる乾燥は熱風源の確保、或は排熱を利用してもそれら
の設備費に多額の費用を必要とする。Conventional methods for dehydrating powder particles include solar drying, hot air contact drying, and water-absorbing agent drying. However, the solar drying method is affected by climatic conditions, and the drying time varies and requires a long drying time. Drying using hot air requires a large amount of equipment costs even if a hot air source is secured or waste heat is used.
吸水剤による乾燥方法は、吸水のみ可能な高分子化合物
を用いても、脱水用吸水材に莫大なコストがかかるとい
った難点を有するものである。The drying method using a water-absorbing agent has the drawback that even if a polymer compound capable of only absorbing water is used, the water-absorbing material for dehydration requires a huge cost.
本発明は、吸水剤として熱相転位型高分子化合物を用い
て粉粒体中の水分を除去する方法に着目し、低コストで
効率のよい脱水方法を開発したものである。The present invention focuses on a method of removing water from powder particles using a thermal phase transition type polymer compound as a water absorbing agent, and has developed a low-cost and efficient dehydration method.
上記熱相転位型高分子化合物を利用したものとして例え
ば特開昭５５−１２１８０４号公報に示されるように、
温度により疎水性から親水性へと可逆的に変化しうる高
分子化合物を吸着剤として用い、その＠度による性質を
利用して水中に含まれる微量の疎水性有機物質を分離回
収する方法がある。As shown in JP-A No. 55-121804, for example, the thermal phase transition type polymer compound described above is used.
There is a method of separating and recovering trace amounts of hydrophobic organic substances contained in water by using a polymer compound that can reversibly change from hydrophobic to hydrophilic depending on temperature as an adsorbent and utilizing its temperature-dependent properties. .
〔問題点を解決するための手段および作用〕本発明は、
温度により親水性から疎水性へ可逆的に変化しうる高分
子化合物を、親水性を示す温度にて粉粒体へ混合して粉
粒体中の水分を高分子化合物に吸着させ、次いで粉粒体
と高分子化合物を分離することを要旨とするものであり
、更に水分を吸着した高分子化合物を、疎水性を示す温
度に加温して水分を分離し、再び粉粒体へ混合して吸着
剤として繰返し使用することは有効であり、又、高分子
化合物を磁性体に担持し、粉粒体と高分子化合物を磁選
分離するようＫした粉粒体中の水分を除去することも有
効である。[Means and effects for solving the problems] The present invention has the following features:
A polymer compound that can reversibly change from hydrophilic to hydrophobic depending on temperature is mixed into powder at a temperature that shows hydrophilicity, the water in the powder is adsorbed to the polymer compound, and then the powder is The purpose of this method is to separate the polymer compound from the body, and further heat the polymer compound that has absorbed water to a temperature that shows hydrophobicity to separate the water, and then mix it back into powder. It is effective to use it repeatedly as an adsorbent, and it is also effective to remove moisture from the powder and granules that have been subjected to magnetic separation by supporting the polymer compound on a magnetic material and magnetically separating the powder and the polymer compound. It is.
本発明において吸水剤として用いる「温度により親水性
から疎水性へと可逆的に変化しうる高分子化合物」は親
水性を示す低温において水を吸着し、疎水性を示す温度
に加熱するとその水を離脱する。この現象は可逆的であ
り、温度を下げると再び水を吸着する。The "polymer compound that can reversibly change from hydrophilic to hydrophobic depending on temperature" used as a water absorbing agent in the present invention adsorbs water at low temperatures where it exhibits hydrophilicity, and when heated to a temperature where it exhibits hydrophobicity, it absorbs water. break away. This phenomenon is reversible; when the temperature is lowered, water will be adsorbed again.
本発明は、このような高分子化合物の親水性−疎水注の
温度による可逆的変化を利用し、粉粒体中にこの高分子
化合物を混合して高分子化合物への水分吸着→高分子化
合物と粉粒体の分離→高分子化合物からの水分離脱→高
分子化合物の再使用と効率のよい脱水を行うものである
。The present invention makes use of the reversible change in hydrophilicity-hydrophobicity of a polymer compound due to temperature, and mixes the polymer compound into powder and granules to absorb water into the polymer compound → to form a polymer compound. separation of powder and granules→desorption of water from the polymer compound→reuse of the polymer compound and efficient dehydration.
このような高分子化合物は各種あり、例として下記の表
にそれらの名称及び転移温度を示す。There are various types of such polymer compounds, and the names and transition temperatures of these are shown in the table below as examples.
表
この高分子化合物はそのままで使用することもできるが
、強度上および吸着後の高分子化合物と粉粒体の分離を
容易に行うため、磁性体に担持させ、磁選機を用いて分
離することが好ましい。磁性体としては吸水性を阻害せ
ず、かっ磁選機で回収できる程度に砂鉄、酸化鉄粉、°
ダライ粉等を含有させ、放射線照射などくよる架橋化、
グラフト結合など任意の手段によって行うことができる
。Table This polymer compound can be used as it is, but in order to improve its strength and to easily separate the adsorbed polymer compound and powder, it is supported on a magnetic material and separated using a magnetic separator. is preferred. As a magnetic material, iron sand, iron oxide powder, °
Cross-linking is carried out by adding powder such as powder and irradiating it with radiation.
This can be done by any means such as grafting.
尚、磁性鉱石粉のような磁性粉体中の水分除去には、ア
ルミナ、シリカのような無磁注体に担持して成形し、篩
によって分離することも出来る。In order to remove moisture from magnetic powder such as magnetic ore powder, it is also possible to support the magnetic powder on a non-magnetic material such as alumina or silica, mold it, and separate it using a sieve.
水分を吸着した高分子化合物を疎水性を示す温度に加温
して脱水する場合は、中低温排水、或は燃焼炉の排ガス
などを利用することができる。When dehydrating a polymer compound that has absorbed moisture by heating it to a temperature that exhibits hydrophobicity, medium-low temperature waste water or exhaust gas from a combustion furnace can be used.
本発明法は、粉粒体として石炭粉、コークス粉、鉱石粉
、高炉スラグ、転炉スラグ等や、その他製鉄業以外の粉
粒体中に含有する水分の除去、低減を目的として、この
ような高分子化合物を繰返し使用できるものである。The method of the present invention aims to remove and reduce moisture contained in powders such as coal powder, coke powder, ore powder, blast furnace slag, converter slag, etc., and other powders and granules used in the non-steel industry. The polymer compound can be used repeatedly.
実施例１
コークス炉に装入する石炭粉の水分低減において実施し
た。メチルセルローズに砂鉄を１゜ｅｓ混合して放射線
照射によってグラフト結合にて比表面積４〜６（ｆｆｌ
／ｍ）の吸水ゲルとした。Example 1 This was carried out to reduce the moisture content of coal powder charged into a coke oven. Methylcellulose is mixed with 1°es of iron sand and irradiated with radiation to form a graft bond with a specific surface area of 4 to 6 (ffl).
/m) water-absorbing gel.
石炭量に対する吸水ゲル比率０．３〜０．４（ｔｏｎ−
吸水ゲル／１ｏｎ−石炭〕の条件で石炭ホッパーに投入
して、親水性を示す温度の常温（約２０℃）で１０分間
攪拌混合しホッパーより石炭と共に切出して磁選機で石
炭と分離し回収した。Water absorption gel ratio to coal amount 0.3 to 0.4 (ton-
Water-absorbing gel/1on-coal] was put into a coal hopper, stirred and mixed for 10 minutes at room temperature (approximately 20°C), which is the temperature that shows hydrophilicity, cut out from the hopper together with the coal, separated from the coal using a magnetic separator, and collected. .
回収した吸水ゲルは、その疎水性を示す温度以上の約６
０℃のコークス製造設備から排出される安水に約６０分
間浸漬して吸着した水分を分離し、再び石炭ホッパーに
投入し使用した。The recovered water-absorbing gel has a temperature of about 6
It was immersed in ammonium water discharged from a coke production facility at 0°C for about 60 minutes to separate the adsorbed water, and then put it into the coal hopper again for use.
これを１００回繰返し実施したが、吸水ゲルは殆んど破
損することなく、石炭粉の水分低減率も低下することな
〈実施することができた。This was repeated 100 times, but the water-absorbing gel was hardly damaged and the moisture reduction rate of the coal powder was not reduced.
このようにして実施した結果、水分約１０慢の石炭粉を
６多種度まで低減させることができた。As a result of carrying out the experiment in this way, it was possible to reduce the moisture content of coal powder, which had a moisture content of about 10%, to 6%.
実施例２
高炉より排出されろ水砕スラグ粉の脱水において実施し
た。ポリエチレンオキシドに酸化鉄粉を１０チ混合して
放射線照射によってグラフト結合にて比表面積４〜６［
：ｄ／ｉ：ｌの吸水ゲルとした。Example 2 This experiment was carried out in the dehydration of granulated slag powder discharged from a blast furnace. 10 pieces of iron oxide powder are mixed with polyethylene oxide and irradiated with radiation to form a graft bond with a specific surface area of 4 to 6.
:d/i:l water-absorbing gel.
水砕スラグ粉に対する吸水ゲル比率０．５〜０．６（ｔ
、ｏｎ−吸水ゲル／１ｏｎ−水砕スラグ〕 の条件で水
砕スラグホッパーに投入して、親水部を示す温度の常温
（約２０℃）で１５分間攪拌混合し、ホッパーより水砕
スラグと共に切出して磁選機で石炭と分離回収した。Ratio of water-absorbing gel to granulated slag powder: 0.5-0.6 (t
, on-water-absorbing gel/1-on granulated slag] was put into a granulated slag hopper, stirred and mixed for 15 minutes at room temperature (approximately 20°C), the temperature indicating the hydrophilic part, and cut out from the hopper together with the granulated slag. The coal was separated and recovered using a magnetic separator.
回収した吸水ゲルは、その疎水性を示す温度以上の約１
２０℃の熱風炉から排出される排ガスに約２０分間さら
して吸着した水分を分離し、再び水砕スラグホッパーに
投入して使用した。The recovered water-absorbing gel has a temperature of about 1
It was exposed to exhaust gas discharged from a hot air oven at 20° C. for about 20 minutes to separate the adsorbed water, and then put into the granulated slag hopper again for use.
これを５０回繰返し実施したが、吸水ゲルは殆んど破損
することなく、水砕スラグ粉の脱水効率も低下すること
もな〈実施することができた。This was repeated 50 times, but the water-absorbing gel was hardly damaged and the dewatering efficiency of the granulated slag powder was not reduced.
このようにして実施した結果、水分約１８％の水砕スラ
グ粉を３俤程度まで脱水することができた。As a result of carrying out the experiment in this manner, it was possible to dehydrate the granulated slag powder, which had a water content of about 18%, to about 3 tons.
以上の如く本発明法によれば、粉粒体中に含有する水分
を低減脱水を行なわぜる場合に熱相転位型高分子化合物
を利用することによって低コストで、簡単な操作で効率
よく行うことができる産業上有益な効果を示すものであ
る。As described above, according to the method of the present invention, when reducing and dehydrating the moisture contained in the powder, the thermal phase transition type polymer compound is used to efficiently perform the dehydration at low cost and with simple operation. It shows the industrially beneficial effects that can be achieved.
本多小平 新部興治１−二Honda Kodaira Shinbu Koji 1-2
Claims (1)
高分子化合物を、親水性を示す温度にて粉粒体へ混合し
て、粉粒体中の水分を高分子化合物に吸着させ、次いで
粉粒体と高分子化合物を分離することを特徴とする粉粒
体中の水分除去方法。 ２ 水分を吸着した高分子化合物を、疎水性を示す温度
に加温して水分を分離し、再び粉粒体へ混合することを
特徴とする特許請求の範囲第１項記載の粉粒体中の水分
除去方法。 ３ 高分子化合物を磁性体に担持し、粉粒体と高分子化
合物を磁選分離することを特徴とする特許請求の範囲第
１項記載の粉粒体中の水分除去方法。[Claims] 1. A polymer compound that can reversibly change from hydrophilic to hydrophobic depending on temperature is mixed into powder at a temperature that exhibits hydrophilicity, and water in the powder is converted into polymer. A method for removing moisture from a powder or granule, which comprises adsorbing the compound to a compound, and then separating the powder or granule from a polymer compound. 2. In the powder or granule material according to claim 1, wherein the water-adsorbed polymer compound is heated to a temperature that exhibits hydrophobicity to separate the water content and then mixed into the powder or granule material again. water removal method. 3. A method for removing moisture from a powder or granular material according to claim 1, characterized in that the polymer compound is supported on a magnetic material, and the powder or granular material and the polymer compound are separated magnetically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28001286A JPS63134008A (en) | 1986-11-25 | 1986-11-25 | Method for removing water in particulate matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28001286A JPS63134008A (en) | 1986-11-25 | 1986-11-25 | Method for removing water in particulate matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63134008A true JPS63134008A (en) | 1988-06-06 |
Family
ID=17619071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28001286A Pending JPS63134008A (en) | 1986-11-25 | 1986-11-25 | Method for removing water in particulate matter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63134008A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267245U (en) * | 1988-11-11 | 1990-05-22 | ||
| JPH0279442U (en) * | 1988-12-05 | 1990-06-19 | ||
| US5298179A (en) * | 1990-07-04 | 1994-03-29 | Nippon Zeon Co., Ltd. | Water absorbent, comprising magnetic material and water absorbent resin |
| JP2018127709A (en) * | 2017-02-10 | 2018-08-16 | 栗田工業株式会社 | Method for preventing the leakage of water and/or mineral material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61134569A (en) * | 1984-12-06 | 1986-06-21 | 工業技術院長 | Method of dehydrating powdered and granular body |
| JPS61151294A (en) * | 1984-12-25 | 1986-07-09 | Nippon Steel Chem Co Ltd | Reducing water content of coal |
-
1986
- 1986-11-25 JP JP28001286A patent/JPS63134008A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61134569A (en) * | 1984-12-06 | 1986-06-21 | 工業技術院長 | Method of dehydrating powdered and granular body |
| JPS61151294A (en) * | 1984-12-25 | 1986-07-09 | Nippon Steel Chem Co Ltd | Reducing water content of coal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267245U (en) * | 1988-11-11 | 1990-05-22 | ||
| JPH0279442U (en) * | 1988-12-05 | 1990-06-19 | ||
| US5298179A (en) * | 1990-07-04 | 1994-03-29 | Nippon Zeon Co., Ltd. | Water absorbent, comprising magnetic material and water absorbent resin |
| JP2018127709A (en) * | 2017-02-10 | 2018-08-16 | 栗田工業株式会社 | Method for preventing the leakage of water and/or mineral material |
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