JPS5842132B2 - Method for producing light calcium carbonate - Google Patents
Method for producing light calcium carbonateInfo
- Publication number
- JPS5842132B2 JPS5842132B2 JP11080577A JP11080577A JPS5842132B2 JP S5842132 B2 JPS5842132 B2 JP S5842132B2 JP 11080577 A JP11080577 A JP 11080577A JP 11080577 A JP11080577 A JP 11080577A JP S5842132 B2 JPS5842132 B2 JP S5842132B2
- Authority
- JP
- Japan
- Prior art keywords
- calcium carbonate
- carbide slag
- light calcium
- producing light
- carbide
- 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
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims description 18
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000002893 slag Substances 0.000 claims description 16
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 239000005997 Calcium carbide Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 2
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 2
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
【発明の詳細な説明】
本発明は、軽質炭酸カルシウムの製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing light calcium carbonate.
従来、カルシウムカーバイドに水を反応させてアセチレ
ンを発生させる際に副生ずるカーバイド滓（以下カーバ
イド滓という）は用途開発が十分されていないため、膨
大な量のカーバイド滓が廃棄されていた。Conventionally, carbide slag (hereinafter referred to as carbide slag), which is produced as a by-product when water is reacted with calcium carbide to generate acetylene, has not been sufficiently developed for use, so a huge amount of carbide slag has been discarded.
本発明者は、廃棄物の有効利用の観点から、カーバイド
滓について検討を行った結果、カーバイド滓の組成はＣ
ａ （ＯＨ） ２９０ ％以上で、１μ以下の微粒子か
らなっており、かつ容易に炭酸化されるという知見に基
いて本発明をなすに至った。The present inventor conducted a study on carbide slag from the perspective of effective utilization of waste, and found that the composition of carbide slag was C.
The present invention was made based on the knowledge that a (OH) is composed of fine particles of 1 μ or less with a content of 290% or more, and is easily carbonated.
本発明は、カーバイド滓を造粒し、これをロータリーキ
ルンに装入するとともに、ロータリキルン内部に一酸化
炭素と酸素を吹込み５００〜９００℃の温度で炭酸化す
ることを特徴とする軽質炭酸カルシウムの製造方法であ
る。The present invention is characterized in that light calcium carbonate is produced by granulating carbide slag, charging it into a rotary kiln, and blowing carbon monoxide and oxygen into the rotary kiln to carbonate it at a temperature of 500 to 900°C. This is a manufacturing method.
カーバイド滓はカーバイドに水を反応させてアセチレン
が発生した残留物で、主として水酸化カルシウム（Ｃａ
（ＯＨ） ２ ）からなっている。Carbide slag is the residue of acetylene generated by reacting carbide with water, and is mainly composed of calcium hydroxide (Ca
(OH) 2).
アセチレンの発生方式によって乾式法と湿式法に区別さ
れるが、乾式法によるカーバイド滓は乾燥した状態にあ
りそのまま使用できるが、湿式法によるカーバイド滓は
濃縮・乾燥の前処理が必要である。Acetylene is generated by the dry method and the wet method. Carbide slag produced by the dry method is in a dry state and can be used as is, but carbide slag produced by the wet method requires pretreatment of concentration and drying.
また、カーバイド滓は平均粒径１μ程度の微粒子からな
っている。Further, the carbide slag consists of fine particles with an average particle size of about 1 μm.
カーバイド滓の成分例を第１表に示す。Table 1 shows examples of the components of carbide slag.
次に、カーバイド滓に造粒助剤としてカルボキシメチル
セルローズ、ポリビニールアルコールあるいは水を０．
１〜１０重量幅添加して、造粒機で５〜５０ｎｒｎの大
きさに造粒する。Next, 0.0% carboxymethyl cellulose, polyvinyl alcohol, or water is added to the carbide slag as a granulation aid.
1 to 10 weight range is added and granulated to a size of 5 to 50 nrn using a granulator.
造粒機としては、通常皿型造粒機あるいはドラム造粒機
が使用される。As the granulator, a dish granulator or a drum granulator is usually used.
造粒物はロータリキルンの一端に装入され、他端から一
酸化炭素と酸素を吹込み、−酸化炭素を燃焼させ５００
〜９００℃の温度でＣＯＪ囲気に保持する。The granules are charged into one end of a rotary kiln, and carbon monoxide and oxygen are blown into the rotary kiln from the other end to burn the -carbon oxide and produce 500
Maintain a COJ atmosphere at a temperature of ~900°C.
一酸化炭素源として、カーバイド製造時に発生する副生
ガスを使用することができる。By-product gas generated during carbide production can be used as a carbon monoxide source.
炭酸化の温度が５００℃未満では、（１）式の炭酸化反
応が進行しにくい。If the carbonation temperature is less than 500°C, the carbonation reaction of formula (1) will hardly proceed.
また、９００℃を超えると（２）式に示すように一旦生
成したＣａＣＯ３が熱分解してしまうからである。Furthermore, if the temperature exceeds 900°C, CaCO3 once generated will be thermally decomposed as shown in equation (2).
Ｃａ （ＯＨ） ２ ＋ＣＯ２→Ｃａ ＣＯ３＋Ｈ２０
・””・” ”・（１）Ｃａｃｔ３−＞ ＣａＯ＋ Ｃ
Ｏ２−””＝・・（２）本発明に用いられるロータリキ
ルンは、通常の型のものでよい。Ca (OH) 2 +CO2→Ca CO3+H20
・””・” ”・(1) Cact3->CaO+ C
O2-""=... (2) The rotary kiln used in the present invention may be of a normal type.
本発明の特徴の一つは、Ｃａ（ＯＨ）２を主体とする滓
の乾燥と炭酸化が同時に行なわ、軽質炭酸カルシウムが
無水の状態で得られる。One of the features of the present invention is that the drying and carbonation of the slag mainly composed of Ca(OH)2 are carried out simultaneously, and light calcium carbonate can be obtained in an anhydrous state.
ロータリキルンから取り出された炭酸カルシウムは平均
粒径が１μ以下の軽質量であり、特別の粉砕工程は必要
ではない。Calcium carbonate taken out from the rotary kiln has a light mass with an average particle size of 1 μm or less, and no special pulverization process is required.
また造粒時加熱によって分解し、ガス発生物質を少量添
加すると粉砕がさらに容易となる。Furthermore, if a small amount of a gas-generating substance is added, which is decomposed by heating during granulation, pulverization becomes easier.
本発明の製造方法によれば、多量に発生または堆積され
ているカーバイド滓を工業的に大量処理することができ
るので経済的である。According to the manufacturing method of the present invention, it is possible to industrially process a large amount of carbide slag generated or deposited in large quantities, which is economical.
また、品質的には市販の高純度品に近い程度のものが得
られ、充填剤や増量剤として利用され、とくに溶銑の脱
硫剤の促進剤として有効である。Furthermore, in terms of quality, it can be obtained at a level close to that of commercially available high-purity products, and is used as a filler or extender, and is particularly effective as an accelerator for desulfurization agents for hot metal.
以下、本発明を実施例により説明する。The present invention will be explained below using examples.
実施例
第−表に示す化学成分を有する、カーバイド滓に水を１
０重量係添加じｉ ドラム造粒機で１０〜３０朋の大き
さに造粒しすこ。Example 1 - Add 1 part of water to carbide slag having the chemical composition shown in Table 1.
Addition of 0 weight coefficient. Granulate shishko to a size of 10 to 30 mm using a drum granulator.
この造粒物を１．５ｍφＸ１５ｍＬのロータリキルンに
装入し、６００〜７００℃の温度で炭酸化した。This granulated product was placed in a 1.5 mφ x 15 mL rotary kiln and carbonated at a temperature of 600 to 700°C.
燃料は、カーバイド製造時の副生ガス（ＣＯ７０容量係
含有）を使用し、同容量の酸素にて燃焼した。As fuel, by-product gas (containing CO70 by volume) during carbide production was used, and the same volume of oxygen was burned.
以上の条件で１力月間の操業を行なったが、操炉上の問
題はなかった。The reactor was operated for one month under the above conditions, and there were no operational problems.
得られた炭酸カルシウムの成分は、第２表に示すとおり
である。The components of the obtained calcium carbonate are as shown in Table 2.
炭酸カルシウムの平均ね径は電子顕微鏡によって測定し
た。The average diameter of calcium carbonate was measured using an electron microscope.
Claims (1)
副生ずるカーバイド滓の造粒物をロータリーキルンに送
入し、−酸化炭素と酸素の存在下、温度５００〜９００
℃で炭酸化することを特徴とする軽質炭酸カルシウムの
製造方法。1. Granules of carbide slag, which is a by-product when generating acetylene from calcium carbide, are fed into a rotary kiln and heated to a temperature of 500 to 900 in the presence of carbon oxide and oxygen.
A method for producing light calcium carbonate, characterized by carbonation at ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11080577A JPS5842132B2 (en) | 1977-09-14 | 1977-09-14 | Method for producing light calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11080577A JPS5842132B2 (en) | 1977-09-14 | 1977-09-14 | Method for producing light calcium carbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5443897A JPS5443897A (en) | 1979-04-06 |
| JPS5842132B2 true JPS5842132B2 (en) | 1983-09-17 |
Family
ID=14545093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11080577A Expired JPS5842132B2 (en) | 1977-09-14 | 1977-09-14 | Method for producing light calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842132B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424015C (en) * | 2004-12-20 | 2008-10-08 | 王嘉兴 | Method for fabricting Nano active calcium carbonate as well as carbon powder from carbide slag |
| CN103183370B (en) * | 2013-04-18 | 2014-11-12 | 浙江工业大学 | Method for preparing industrial ultra-fine activated calcium carbonate from carbide slag |
| CN103433268A (en) * | 2013-08-27 | 2013-12-11 | 安徽皖维高新材料股份有限公司 | Treatment method for acetic acid evaporation residue |
| CN104229852B (en) * | 2014-09-12 | 2016-02-17 | 中国科学院过程工程研究所 | A surface modification method for preparing fine calcium carbonate from carbide slag |
| CN108046302B (en) * | 2017-11-28 | 2020-02-04 | 新疆国峰嘉和环保科技有限公司 | Method for producing high-purity hydrated lime from carbide slag |
| CN109231250A (en) * | 2018-12-03 | 2019-01-18 | 衡阳师范学院 | A method of calcining carbide slag prepares calcium carbonate in Galuber's salt type brine cleaning procedure |
| CN109354051A (en) * | 2018-12-03 | 2019-02-19 | 衡阳师范学院 | A method for preparing calcium carbonate in the mirabilite type brine purification process by using calcium carbide slag to replace lime |
| CN110040757A (en) * | 2019-06-06 | 2019-07-23 | 长沙紫宸科技开发有限公司 | A method of precipitated calcium carbonate is prepared using carbide slag |
| JPWO2024142496A1 (en) * | 2022-12-28 | 2024-07-04 | ||
| CN116785908B (en) * | 2023-04-25 | 2025-10-03 | 新疆天富环保科技有限公司 | A method and system for wet desulfurization and coordinated decarbonization of carbide slag |
| WO2025047432A1 (en) * | 2023-08-31 | 2025-03-06 | デンカ株式会社 | Cement admixture, expansion material, and cement composition |
| JP7847782B2 (en) * | 2023-12-28 | 2026-04-20 | 白石工業株式会社 | Method for producing calcium carbonate, method for producing ready-mix mortar or ready-mix concrete, method for improving the ground, method for filling underground cavities, and method for fixing carbon dioxide |
-
1977
- 1977-09-14 JP JP11080577A patent/JPS5842132B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5443897A (en) | 1979-04-06 |
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