JPH0475075B2 - - Google Patents
Info
- Publication number
- JPH0475075B2 JPH0475075B2 JP26519884A JP26519884A JPH0475075B2 JP H0475075 B2 JPH0475075 B2 JP H0475075B2 JP 26519884 A JP26519884 A JP 26519884A JP 26519884 A JP26519884 A JP 26519884A JP H0475075 B2 JPH0475075 B2 JP H0475075B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- activated carbon
- waste liquid
- hydrochloric acid
- steel
- 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
- 239000007788 liquid Substances 0.000 claims description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 30
- 239000002699 waste material Substances 0.000 claims description 26
- 238000005554 pickling Methods 0.000 claims description 18
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 239000010802 sludge Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000741 silica gel Substances 0.000 claims description 9
- 229910002027 silica gel Inorganic materials 0.000 claims description 9
- 239000011362 coarse particle Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/36—Regeneration of waste pickling liquors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Description
（産業上の利用分野）
本発明は鉄鋼の塩酸酸洗廃液の精製方法とくに
該廃液中のスラジ及びSiO2の除去方法に関する
ものである。
（従来の技術）
鉄鋼の塩酸酸洗廃液中には多量のFeが含まれ
ているため焙焼炉を用いて焙焼したり、結晶化処
理方法によつてFeを酸化鉄として回収し、顔料
や充填材あるいはフエライト原料として利用して
いる。
（発明が解決しようとする問題点）
ところで前記廃液にはFeのほか、ごく微量で
あるが、MnCl2，CrCl3，CaCl2，SiO2等が含ま
れているため、高級な磁性材料などへの利用が妨
げられている。
本発明の目的とするところは、前記廃酸中の主
として浮遊物質（スラジ，SiO2）を除去してフ
エライト原料用として好適なものとする鉄鋼の塩
酸酸洗廃液の精製方法を提供するにある。
（問題点を解決するための手段）
本発明の前記の目的は下記の方法によつて達成
される。
(1) 鉄鋼の塩酸酸洗廃液を、活性炭過器を用い
て過し、該廃液中に含まれるスラジ及び粗粒
SiO2を除去することを特徴とする鉄鋼の塩酸
酸洗廃液の精製方法。
(2) 鉄鋼の塩酸酸洗廃液を、活性炭過器を用い
て過し、該廃液中に含まれるスラジ及び粗粒
SiO2を除去した後、シリカゲル粒子を充填し
た吸着塔を通液させて微粒SiO2を除去するこ
とを特徴とする鉄鋼の塩酸酸洗廃液の精製方
法。
本発明者らは鉄鋼の塩酸酸洗廃液中の主として
スラジ、粗粒SiO2を、該酸洗廃液を活性炭過
器を通じて過することによつて減少せしめるこ
とができ、さらに必要に応じて第２段階としてこ
の液をシリカゲル粒子を充填した吸着塔を通液
させることによつて微粒SiO2を著しく減少せし
めうることを確めたものである。
以下、本発明を図面にもとづいて説明する。
第１図は本発明を実施するための賢型の過も
しくは吸着装置である。１は耐酸，耐圧性の容器
であつて、上部にバルブ２、送液管３からなる給
液口４を備え、下部に排出管５、バルブ６からな
る排液口７を備えている。この排液口７の塔内側
は、炉材保持整流板８ａ，８ｂ、ストレーナー９
ａ，９ｂにより材１０の流出を防止している。
かかる構造の装置を活性炭過器として構成する
ときは、材として粒径0.25〜７mmの活性炭粒子
を充填し、又吸着塔として構成するときは材と
して粒径0.42〜５mmのシリカゲル粒子を充填す
る。
第２図は本発明の実施の態様を示すもので、酸
洗廃液は送液ポンプ１４、バルブ１５を経て通液
管１３ａを通り、活性炭過器１１に供給され、
ここで該廃液中に含まれるスラジ及び粗粒SiO2
が除去された後、通液管１３ｂを通つてシリカゲ
ル吸着塔１２に供給され、ここで浮遊物質（微粒
SiO2）が吸着され、かくして精製された酸洗廃
液が吸着塔１２から取出される。
本発明を更に実施例にもとづいて説明する。
実施例 １
過器（充填層部；径0.600（ｍ），高さ0.435
（ｍ））に活性炭粒子を40（Kg）充填し、塩酸酸洗
廃液を過した結果、下記第１表の結果が得られ
た。
(Industrial Application Field) The present invention relates to a method for purifying a waste solution from hydrochloric acid pickling of steel, and particularly to a method for removing sludge and SiO 2 from the waste solution. (Conventional technology) Since the waste liquid from hydrochloric acid pickling of steel contains a large amount of Fe, it is roasted in a roasting furnace or recovered as iron oxide through a crystallization treatment method, and then used as a pigment. It is used as filler material or raw material for ferrite. (Problem to be solved by the invention) In addition to Fe, the waste liquid contains very small amounts of MnCl 2 , CrCl 3 , CaCl 2 , SiO 2 , etc., so it is not suitable for use in high-grade magnetic materials. is being prevented from being used. An object of the present invention is to provide a method for purifying a waste liquid from hydrochloric acid pickling of steel, which removes mainly suspended substances (sludge, SiO 2 ) from the waste acid and makes it suitable for use as a ferrite raw material. . (Means for Solving the Problems) The above objects of the present invention are achieved by the following method. (1) Filter waste liquid from hydrochloric acid pickling of steel using an activated carbon filter to remove sludge and coarse particles contained in the waste liquid.
A method for purifying a waste liquid from hydrochloric acid pickling of steel, characterized by removing SiO 2 . (2) Filter waste liquid from hydrochloric acid pickling of steel using an activated carbon filter to remove sludge and coarse particles contained in the waste liquid.
A method for purifying a waste liquid from hydrochloric acid pickling of steel, which comprises removing SiO 2 and then passing the liquid through an adsorption column filled with silica gel particles to remove fine SiO 2 . The present inventors have been able to reduce mainly sludge and coarse SiO 2 in the waste solution from hydrochloric acid pickling of steel by passing the pickling waste solution through an activated carbon filter, and if necessary, a second filter. It was confirmed that fine particles of SiO 2 could be significantly reduced by passing this liquid through an adsorption tower filled with silica gel particles as a step. Hereinafter, the present invention will be explained based on the drawings. FIG. 1 shows a clever type of vacuum or adsorption device for carrying out the present invention. Reference numeral 1 is an acid-resistant and pressure-resistant container, which is equipped with a liquid supply port 4 consisting of a valve 2 and a liquid feeding pipe 3 at the top, and a liquid drain port 7 consisting of a discharge pipe 5 and a valve 6 at the bottom. The inside of the tower at the drain port 7 includes furnace material holding rectifier plates 8a, 8b, and a strainer 9.
a and 9b prevent the material 10 from flowing out.
When a device having such a structure is configured as an activated carbon filter, it is filled with activated carbon particles having a particle size of 0.25 to 7 mm, and when it is configured as an adsorption tower, it is filled with silica gel particles having a particle size of 0.42 to 5 mm. FIG. 2 shows an embodiment of the present invention, in which the pickling waste liquid passes through a liquid feed pump 14, a valve 15, a liquid passage pipe 13a, and is supplied to an activated carbon filter 11.
Here, the sludge and coarse SiO 2 contained in the waste liquid
After being removed, it is supplied to the silica gel adsorption tower 12 through the liquid passage pipe 13b, where suspended solids (fine particles) are removed.
SiO 2 ) is adsorbed, and the thus purified pickling waste liquid is taken out from the adsorption tower 12. The present invention will be further explained based on examples. Example 1 Filter vessel (packed bed section; diameter 0.600 (m), height 0.435
(m)) was filled with 40 (Kg) of activated carbon particles, and the hydrochloric acid pickling waste solution was filtered, resulting in the results shown in Table 1 below.
【表】
実施例 ２
第２表に示す組成の塩酸酸洗廃液を通液し、活
性炭過器にて浮遊物質（スラジ・粗粒SiO2）
を除去した後、シリカゲル吸着塔にて、浮遊物質
（微粒SiO2）を吸着すると第３表に示す如き成分
のものとなり、特にスラジとSiO2の含有量が激
減することが判る。[Table] Example 2 A hydrochloric acid pickling waste solution having the composition shown in Table 2 is passed through an activated carbon filter to remove suspended solids (sludge and coarse SiO 2 ).
After removing the suspended solids (fine SiO 2 ) in a silica gel adsorption tower, the components are as shown in Table 3, and it can be seen that the content of sludge and SiO 2 in particular is drastically reduced.
【表】【table】
【表】
（発明の効果）
前記実施例からも明らかな如く、本発明によれ
ば鉄鋼の塩酸酸洗廃液中のスラジ，SiO2等の浮
遊物質を、極めて簡単にかつ容易に効率よく除去
することができるので、産業上極めて有用であ
る。[Table] (Effects of the Invention) As is clear from the above examples, according to the present invention, suspended solids such as sludge and SiO 2 in the waste solution of hydrochloric acid pickling of steel can be removed extremely simply and easily. Therefore, it is extremely useful industrially.
第１図は本発明の実施に用いられる過もしく
は吸着装置の一例を示す説明図、第２図は本発明
の実施の態様を示す説明図である。
１……耐酸・耐圧容器（過器・吸着塔）、２
……バルブ、３……送液管、４……給液口、５…
…排出管、６……バルブ、７……排液口、８ａ，
８ｂ……炉材保持整流板、９ａ，９ｂ……ストレ
ーナー、１０……材（活性炭・シリカゲル粒
子）、１１……耐酸・耐圧容器（過器）、１２…
…耐酸・耐圧容器（吸着塔）、１３ａ，１３ｂ…
…通液管、１４……送液ポンプ、１５……バル
ブ。
FIG. 1 is an explanatory diagram showing an example of a permeation or adsorption device used in carrying out the present invention, and FIG. 2 is an explanatory diagram showing an embodiment of the present invention. 1...Acid-resistant/pressure-resistant container (filter/adsorption tower), 2
...Valve, 3...Liquid feed pipe, 4...Liquid supply port, 5...
...Drain pipe, 6...Valve, 7...Drain port, 8a,
8b...Furnace material holding rectifier plate, 9a, 9b...Strainer, 10...Material (activated carbon/silica gel particles), 11...Acid-resistant/pressure-resistant container (supercontainer), 12...
...Acid-proof/pressure-proof container (adsorption tower), 13a, 13b...
...Liquid passage pipe, 14...Liquid feeding pump, 15...Valve.
Claims (1)
て過し、該廃液中に含まれるスラジ及び粗粒
SiO2を除去することを特徴とする鉄鋼の塩酸酸
洗廃液の精製方法。 ２ 給液口および排液口を有する耐酸・耐圧容器
の上部と下部に夫々整流板とストレーナーを設け
ると共に、該容器中に活性炭粒子を充填してなる
活性炭過器を用いる特許請求の範囲第１項記載
の方法。 ３ 鉄鋼の塩酸酸洗廃液を、活性炭過器を用い
て過し、該廃液中に含まれるスラジ及び粗粒
SiO2を除去した後、シリカゲル粒子を充填した
吸着塔を通液させて微粒SiO2を除去することを
特徴とする鉄鋼の塩酸酸洗廃液の精製方法。 ４ 給液口および排液口を有する耐酸・耐圧容器
の上部と下部に夫々整流板とストレーナーを設け
ると共に、該容器内に活性炭粒子を充填してなる
活性炭過器を用いる特許請求の範囲第３項記載
の方法。 ５ 給液口および排液口を有する耐酸・耐圧容器
の上部と下部に夫々整流板とストレーナーを設け
ると共に、該容器内にシリカゲル粒子を充填して
なるシリカゲル吸着塔を用いる特許請求の範囲第
３項又は第４項記載の方法。[Scope of Claims] 1. Waste liquid from hydrochloric acid pickling of steel is filtered using an activated carbon filter to remove sludge and coarse particles contained in the waste liquid.
A method for purifying a waste liquid from hydrochloric acid pickling of steel, characterized by removing SiO 2 . 2. Claim 1, which uses an activated carbon filtration device in which a rectifying plate and a strainer are provided at the upper and lower parts of an acid-proof/pressure-resistant container having a liquid supply port and a liquid drain port, respectively, and activated carbon particles are filled in the container. The method described in section. 3 The waste liquid from hydrochloric acid pickling of steel is filtered using an activated carbon filter to remove the sludge and coarse particles contained in the waste liquid.
A method for purifying a waste liquid from hydrochloric acid pickling of steel, which comprises removing SiO 2 and then passing the liquid through an adsorption column filled with silica gel particles to remove fine SiO 2 . 4 Claim 3 using an activated carbon filtration device in which a rectifying plate and a strainer are provided at the upper and lower parts of an acid-proof/pressure-resistant container having a liquid supply port and a liquid drain port, respectively, and activated carbon particles are filled in the container. The method described in section. 5. Claim 3, which uses a silica gel adsorption tower formed by providing a rectifying plate and a strainer at the upper and lower parts of an acid-proof/pressure-resistant container having a liquid supply port and a liquid drain port, respectively, and filling the container with silica gel particles. or the method described in paragraph 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26519884A JPS61146384A (en) | 1984-12-18 | 1984-12-18 | Purifying method of waste liquid of hydrochloric acid pickling of steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26519884A JPS61146384A (en) | 1984-12-18 | 1984-12-18 | Purifying method of waste liquid of hydrochloric acid pickling of steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61146384A JPS61146384A (en) | 1986-07-04 |
| JPH0475075B2 true JPH0475075B2 (en) | 1992-11-27 |
Family
ID=17413900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26519884A Granted JPS61146384A (en) | 1984-12-18 | 1984-12-18 | Purifying method of waste liquid of hydrochloric acid pickling of steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61146384A (en) |
-
1984
- 1984-12-18 JP JP26519884A patent/JPS61146384A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61146384A (en) | 1986-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |