JPH05139727A - Method for utilizing red mud produced in aluminum refining process - Google Patents
Method for utilizing red mud produced in aluminum refining processInfo
- Publication number
- JPH05139727A JPH05139727A JP3334291A JP33429191A JPH05139727A JP H05139727 A JPH05139727 A JP H05139727A JP 3334291 A JP3334291 A JP 3334291A JP 33429191 A JP33429191 A JP 33429191A JP H05139727 A JPH05139727 A JP H05139727A
- Authority
- JP
- Japan
- Prior art keywords
- red mud
- refining process
- aluminum refining
- pigment
- mud produced
- 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 abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 13
- 238000007670 refining Methods 0.000 title claims abstract description 11
- 239000000049 pigment Substances 0.000 claims abstract description 18
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 5
- 230000002378 acidificating effect Effects 0.000 claims abstract description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000006703 hydration reaction Methods 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004040 coloring Methods 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000010454 slate Substances 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- SESFRYSPDFLNCH-UHFFFAOYSA-N benzyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1=CC=CC=C1 SESFRYSPDFLNCH-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0409—Waste from the purification of bauxite, e.g. red mud
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/54—Pigments; Dyes
-
- 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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アルミニウム精製過程
で生じる不純物たる赤泥を有効に利用するための利用法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for effectively utilizing red mud, which is an impurity produced during the aluminum refining process.
【０００２】[0002]
【従来技術とその課題】バイヤー法によってボーキサイ
トからアルミニウムを精製する際、不純物として多量の
赤泥を生じる。この赤泥は酸化鉄や酸化アルミニウムを
含むものの有効な利用法がなく、産業廃棄物として地
中、あるいは水中に投棄せざるを得ないため、深刻な公
害問題を惹き起こしている。2. Description of the Related Art When purifying aluminum from bauxite by the Bayer method, a large amount of red mud is produced as an impurity. Although this red mud contains iron oxide and aluminum oxide, it has no effective use and must be dumped into the ground or water as industrial waste, causing serious pollution problems.
【０００３】本発明は、このような点に鑑み、上記赤泥
を、建築物の外壁、コンクリートブロック、石板など、
主として建築、土木製品の着色用顔料として利用する、
アルミニウム精錬過程で生じる赤泥の利用法を提供する
ことを目的とするものである。In view of such a point, the present invention uses the above-mentioned red mud as an outer wall of a building, a concrete block, a stone plate, etc.
Mainly used as a pigment for building and civil engineering products,
The purpose of the present invention is to provide a method of utilizing red mud produced during the aluminum refining process.
【０００４】[0004]
【課題の解決手段】本発明は、上記した目的を達成する
ために、アルミニウム精錬過程の廃棄物たる赤泥に弱酸
性の添加剤を混入し、これを撹拌して粒度を均一にした
後、脱水し、更に乾燥させることによって得られた赤褐
色状の粉状物を顔料として利用する点に特徴を有するも
のである。Means for Solving the Problems In order to achieve the above object, the present invention mixes a weakly acidic additive with red mud, which is a waste product of an aluminum refining process, and stirs it to make the particle size uniform. It is characterized in that the reddish brown powdery substance obtained by dehydration and further drying is used as a pigment.
【０００５】上記赤泥に添加される添加剤は、本利用法
によって生成された顔料を使用したときにその色落ちを
防止するためのもので、酢酸など弱酸類が用いられ、そ
の添加量は約０．１％程度で良い。この添加剤が混入さ
れた赤泥は、粒子がほぼ均等になるように撹拌機内で撹
拌された後、フィルタープレスを通過させるなどして含
水率が４０％程度になるよう脱水される。The additive added to the above red mud is for preventing discoloration when the pigment produced by this method is used, and a weak acid such as acetic acid is used. About 0.1% is sufficient. The red mud mixed with this additive is stirred in a stirrer so that the particles are substantially even, and then is passed through a filter press to be dehydrated so that the water content becomes about 40%.
【０００６】上記脱水処理が施された赤泥は、乾燥機内
に投入されて乾燥され、水分が更に除去されて赤褐色の
粉状物となる。乾燥に際しては、種々の方法が採られる
が、例えば生石灰を重量比で５〜１０％程度、機内に投
与して水和反応を利用して行うようにしても良い。生石
灰を用いた場合には生成される顔料が中和状態に維持さ
れる。The dewatered red mud is put into a drier and dried to further remove water, thereby forming a reddish brown powder. Various methods may be used for drying, and for example, quick lime of about 5 to 10% by weight may be administered in the machine to utilize the hydration reaction. When quicklime is used, the pigment produced is maintained in a neutralized state.
【０００７】[0007]
【実施例】水分６０％の上記赤泥に、酢酸０．１％の添
加剤を混入して撹拌後、脱水及び乾燥して得られた粉状
物を、道路舗装用のカラー石板の表面仕上げ層用顔料と
して用いた。赤泥の組成は、アルミニウム精製工場で使
用されるボーキサイトの質によっても数値は若干変動す
るが、その大略はほぼ次の通りである。 （赤泥の組成） 酸化アルミニウム ・・・・２２％ 酸化珪素 ・・・・１７％ 酸化鉄 ・・・・３２％ 酸化チタン ・・・・ ６％ 酸化ナトリウム ・・・・ ９％ 灼熱減量 ・・・・１１％Example: A powdery material obtained by mixing the red mud having a water content of 60% with an additive of 0.1% acetic acid, stirring, dehydrating and drying the surface of a colored stone plate for road paving. Used as a layer pigment. The red mud composition varies slightly depending on the quality of the bauxite used in the aluminum refinery, but its outline is as follows. (Composition of red mud) Aluminum oxide ・ ・ ・ ・ 22% Silicon oxide ・ ・ ・ ・ 17% Iron oxide ・ ・ ・ ・ 32% Titanium oxide ・ ・ ・ ・ 6% Sodium oxide ・ ・ ・ ・ 9% Burning loss ・ ・・ ・ 11%
【０００８】上記カラー石板は、一辺が３００mmで３０
mm厚の正方形状を成し、表面５mm厚の部分に表面仕上げ
層を有する。この表面仕上げ層として、セメント１００
に対して上記顔料を約５％混入し、これに砂利を混ぜて
モルタル状としたものを型に流し込むことにより基層部
分と一体化させるようにした。The colored stone plate is 300 mm on a side and 30
It has a square shape with a thickness of mm, and has a surface finishing layer on a portion having a thickness of 5 mm. As this surface finishing layer, cement 100
On the other hand, about 5% of the above pigment was mixed, and mortar-shaped gravel was mixed with this pigment and poured into a mold so as to be integrated with the base layer portion.
【０００９】得られた石板は、ベンガラ色状の従来の顔
料を用いたものに比べて若干薄い赤褐色状を呈するが、
耐摩耗性と強度においては従来の顔料を用いたものに遜
色することはなく、基層との結合力や耐食性および初期
強度においては従来顔料を用いたものよりも優れてい
た。The obtained slab shows a reddish brown color which is slightly lighter than the one using the red iron oxide-like conventional pigment,
In terms of abrasion resistance and strength, they were comparable to those using conventional pigments, and were superior to those using conventional pigments in terms of bonding strength with the base layer, corrosion resistance and initial strength.
【００１０】通常の一般的なベンガル色の顔料はその成
分の大半、約９８％程度が酸化鉄によって構成されてい
るにすぎないのに対し、本発明の顔料は、赤泥中に酸化
アルミニウムが多量に含まれているため、これとセメン
トとの結合によって上記顕著な作用を発揮したものと思
われる。[0010] In the pigments of the present invention, aluminum oxide is contained in the red mud, whereas most of the components of the ordinary general Bengal pigment are composed of iron oxide, about 98%. Since it is contained in a large amount, it is considered that the above-mentioned remarkable action was exhibited by the binding of this with cement.
【００１１】また、赤泥中には、上記のように、多量の
酸化鉄と少量の酸化チタンも含まれているため、耐摩耗
性にも優れる。勿論、上記表面仕上げ層の赤褐色が色落
ちしたり、他に転着するようなこともなかった。Further, since the red mud contains a large amount of iron oxide and a small amount of titanium oxide as described above, it has excellent wear resistance. Of course, the reddish brown color of the surface finish layer did not discolor or transfer to other places.
【００１２】本発明によって生成された粉状物は、上記
したカラー平板の他、同様な使用態様によって建築物の
外壁やコンクリート２次製品などの表面仕上げ層用の顔
料として、あるいはラバー材などへの顔料としても使用
することができるものである。The powdery substance produced by the present invention can be used as a pigment for a surface finishing layer such as an outer wall of a building or a secondary concrete product, or a rubber material according to the same use mode, in addition to the above-mentioned color flat plate. It can also be used as a pigment.
【００１３】[0013]
【発明の効果】以上述べたように本発明によれば、赤泥
を所定の方法により乾燥させて得られた粉状物を顔料と
して用いるようにしたので、建築あるいは土木用の各種
コンクリート製品に応用したときには、赤泥中に含まれ
ている各種成分によって、耐摩耗性、強度、安定性等に
優れた製品を提供できる。As described above, according to the present invention, since the powdery substance obtained by drying red mud by a predetermined method is used as a pigment, it can be applied to various concrete products for construction or civil engineering. When applied, various components contained in red mud can provide products with excellent wear resistance, strength, stability, and the like.
【００１４】また、本発明によれば、従来廃棄処分する
他なかったアルミ精製時の赤泥を有効利用することが可
能となり、しかも従来に比べて著しく低コストの顔料を
提供できるものである。Further, according to the present invention, it is possible to effectively use the red mud at the time of refining aluminum, which has conventionally been disposed of only by disposal, and it is possible to provide a pigment which is significantly lower in cost than the conventional one.
Claims (2)
る赤泥に、弱酸性の添加剤を混入し、これを撹拌した
後、脱水し、乾燥させて得られた赤褐色状の粉状物を顔
料として利用することを特徴とするアルミニウム精錬過
程で生じる赤泥の利用法。1. A reddish brown powder which is obtained by mixing a weakly acidic additive with red mud, which is an impurity generated during the aluminum refining process, stirring the mixture, dehydrating it, and drying it. Utilization of red mud generated in aluminum refining process characterized by utilization.
る赤泥に、弱酸性の添加剤を重量比で約０．１％混入
し、これを撹拌した後、含水率が約４０％程度になるま
で脱水し、これに生石灰を添加してその水和反応を利用
することにより乾燥させて赤褐色状の粉状物を生成し、
この粉状物をカラー石板、コンクリート２次製品、ある
いは外壁表面などの建築及び土木製品用の顔料として利
用することを特徴とするアルミニウム精錬過程で生じる
赤泥の利用法。2. A mildly acidic additive is mixed in red mud, which is an impurity generated during the aluminum refining process, in an amount of about 0.1% by weight, and the mixture is stirred until the water content reaches about 40%. It is dehydrated, and quick lime is added to this to dry it by utilizing the hydration reaction to produce a reddish brown powder,
A method of using red mud produced in the aluminum refining process, characterized in that this powdery material is used as a pigment for architectural and civil engineering products such as colored stone plates, concrete secondary products, or outer wall surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3334291A JPH05139727A (en) | 1991-11-22 | 1991-11-22 | Method for utilizing red mud produced in aluminum refining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3334291A JPH05139727A (en) | 1991-11-22 | 1991-11-22 | Method for utilizing red mud produced in aluminum refining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05139727A true JPH05139727A (en) | 1993-06-08 |
Family
ID=18275699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3334291A Pending JPH05139727A (en) | 1991-11-22 | 1991-11-22 | Method for utilizing red mud produced in aluminum refining process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05139727A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194928A (en) * | 2019-06-27 | 2019-09-03 | 广西福宝信科技有限公司 | It can effectively reduce the preparation method of the outdoor powdery paints of cost |
| RU2700071C1 (en) * | 2019-03-06 | 2019-09-12 | Общество с ограниченной ответственностью "Гидрогранатовые пигменты" | Method of producing iron-containing pigments |
| RU2701939C1 (en) * | 2019-04-12 | 2019-10-02 | Общество с ограниченной ответственностью "Гидрогранатовые пигменты" | Method of producing iron oxide pigments |
-
1991
- 1991-11-22 JP JP3334291A patent/JPH05139727A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2700071C1 (en) * | 2019-03-06 | 2019-09-12 | Общество с ограниченной ответственностью "Гидрогранатовые пигменты" | Method of producing iron-containing pigments |
| RU2701939C1 (en) * | 2019-04-12 | 2019-10-02 | Общество с ограниченной ответственностью "Гидрогранатовые пигменты" | Method of producing iron oxide pigments |
| CN110194928A (en) * | 2019-06-27 | 2019-09-03 | 广西福宝信科技有限公司 | It can effectively reduce the preparation method of the outdoor powdery paints of cost |
| CN110194928B (en) * | 2019-06-27 | 2020-12-01 | 广西福宝信科技有限公司 | Preparation method of outdoor powder coating that can effectively reduce cost |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |