JPS609083B2 - Hot metal desulfurization agent - Google Patents
Hot metal desulfurization agentInfo
- Publication number
- JPS609083B2 JPS609083B2 JP8756577A JP8756577A JPS609083B2 JP S609083 B2 JPS609083 B2 JP S609083B2 JP 8756577 A JP8756577 A JP 8756577A JP 8756577 A JP8756577 A JP 8756577A JP S609083 B2 JPS609083 B2 JP S609083B2
- Authority
- JP
- Japan
- Prior art keywords
- hot metal
- powder
- weight
- desulfurization agent
- desulfurization
- 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
- 238000006477 desulfuration reaction Methods 0.000 title claims description 17
- 230000023556 desulfurization Effects 0.000 title claims description 17
- 229910052751 metal Inorganic materials 0.000 title claims description 8
- 239000002184 metal Substances 0.000 title claims description 8
- 239000000843 powder Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 229920002678 cellulose Polymers 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 229910014813 CaC2 Inorganic materials 0.000 description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 description 9
- 230000003009 desulfurizing effect Effects 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920000609 methyl cellulose Polymers 0.000 description 4
- 239000001923 methylcellulose Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000006266 etherification reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 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 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
【発明の詳細な説明】
本発明は、溶銑の脱硫剤、特に分散性良好な脱硫剤に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a desulfurizing agent for hot metal, particularly a desulfurizing agent with good dispersibility.
従来からＣａＣ２とＣａＣ０３とを主成分とした溶銑の
脱硫剤が使われているが、ＣａＣ２の脱硫効率が低いた
めこの脱硫剤の脱硫率は約８０％程度のものであった。Conventionally, hot metal desulfurization agents containing CaC2 and CaC03 as main components have been used, but because the desulfurization efficiency of CaC2 is low, the desulfurization efficiency of this desulfurization agent is about 80%.
このように脱硫率の低いのは、ＣａＣ２と軽質ＣａＣ０
３との粉末が均一に混合されていても溶銑に噴射される
迄の間に静電気によりＣａＣ２や竪質ＣａＣ０３の粉末
は凝集され、不均一な脱硫剤として溶銑中に供給される
からであると思われる。本発明者はこれらの欠点を解決
するためいろいろ研究を行った結果、セルロース誘導体
を少量配合すると分散性が良好となり、脱硫率が向上す
るという知見に基づき、本発明を完成したものである。
すなわち本発明は、ＣａＣ２粉末７０〜９５重量％、粒
径２一以下の軽質ＣａＣ０３粉末４〜２５重量％および
セルロース誘導体粉末１〜５重量％とからなる溶鉄の脱
硫剤である。以下さらに本発明を詳しく説明する。This low desulfurization rate is caused by CaC2 and light CaC0.
This is because even if the powders with 3 and 3 are mixed uniformly, the powders of CaC2 and vertical CaC03 will be aggregated by static electricity before being injected into the hot metal, and will be supplied into the hot metal as a non-uniform desulfurization agent. Seem. The present inventor conducted various studies to solve these drawbacks, and as a result, the present invention was completed based on the knowledge that when a small amount of cellulose derivative is blended, the dispersibility improves and the desulfurization rate improves.
That is, the present invention is a molten iron desulfurization agent comprising 70 to 95% by weight of CaC2 powder, 4 to 25% by weight of light CaC03 powder with a particle size of 21 or less, and 1 to 5% by weight of cellulose derivative powder. The present invention will be further explained in detail below.
本発明はＣａＣ２、軽質ＣａＣ０３及びセルロース誘導
体粉末の三成分系の溶鉄の脱硫剤であって、本発明の脱
硫剤を用いると、溶銑の脱硫率が９０％以上とすぐれた
効果がある。The present invention is a three-component desulfurization agent for molten iron consisting of CaC2, light CaC03, and cellulose derivative powder, and when the desulfurization agent of the present invention is used, it has an excellent desulfurization rate of hot metal of 90% or more.
ＣａＣ２粉末は、市販のカルシウムカーバイトが使用さ
れ、通常１００メッシュ節下の粉末が好ましい。As the CaC2 powder, commercially available calcium carbide is used, and a powder under 100 mesh is usually preferable.
竪質ＣａＣ０３粉末は、粒径２ム以下、高密度０．４〜
０．６の微粉末が好ましい。Vertical CaC03 powder has a particle size of 2 mm or less and a high density of 0.4~
A fine powder of 0.6 is preferred.
セルロース誘導体とは、セルロース〔Ｃ６日７０２（Ｏ
Ｈ）３〕の水酸基をエーテル化したセルロース誘導体で
ある。Cellulose derivatives are cellulose [C6 day 702 (O
It is a cellulose derivative obtained by etherifying the hydroxyl group of H)3].
その具体例としては、カルボキシメチルセルロース（Ｃ
ＭＣ）、メチルセルロース（ＭＣ）等の粉末などがあげ
られる。これらは、エーテル化度の高く、吸水性の低い
耐水性のものが好ましい。又その粒度はできるだけ細か
いものが好ましく、例えば竪質炭酸カルシウムと同程度
の粒度のものが更に好ましい。次に、ＣａＣ２粉末７０
〜９５重量％、軽質ＣａＣ０３粉末４〜２５重量％、セ
ルロース誘導体粉末１〜５重量％の割合で配合し、これ
を通常使用される羽根付ミキサーまたは空気混合方式で
混合する。A specific example is carboxymethyl cellulose (C
Examples include powders such as MC) and methylcellulose (MC). These are preferably water resistant with a high degree of etherification and low water absorption. Further, the particle size is preferably as fine as possible, and for example, a particle size comparable to that of vertical calcium carbonate is more preferable. Next, CaC2 powder 70
~95% by weight, light CaC03 powder from 4 to 25% by weight, and cellulose derivative powder from 1 to 5% by weight, and mixed using a commonly used blade mixer or air mixing method.
混合範囲がいずれのものもその範囲外では脱硫率９０％
以上とすることはできない。次に、本発明を実施例によ
って説明する。Regardless of the mixing range, the desulfurization rate is 90% outside the range.
It cannot be more than that. Next, the present invention will be explained by examples.
実施例 １
いずれも市販品である、１００メッシュ節下の粉末カー
バィド、平均粒蓬２山以下で高密度０．５の軽質ＣａＣ
０３粉末およびＣＭＣの配合比を第１表に示すように変
えて羽根付ミキサーで１０分間混合して脱硫剤を得た。Example 1 Powdered carbide with a particle diameter of 100 mesh or less, light CaC with a high density of 0.5 and an average grain size of 2 or less, both of which are commercially available products.
The blending ratio of 03 powder and CMC was changed as shown in Table 1 and mixed for 10 minutes using a mixer with blades to obtain a desulfurizing agent.
次に、この脱硫剤を溶銑に対して１重量％の割合で、温
度１５５０℃、２分間Ｎ２ガスと共に吹込み脱硫処理を
行なった。その結果を第１表に示す。比較例として、従
釆のＣａＣ２一ＣａＣ０３系脱硫剤を同条件で脱硫処理
した結果を第１表に示す。第１表（注１）脱伽率紫＝脱
備前Ｓ多‐脱疏後Ｓ※ Ｘ，。Next, desulfurization treatment was carried out by blowing this desulfurizing agent at a ratio of 1% by weight to the hot metal together with N2 gas at a temperature of 1550° C. for 2 minutes. The results are shown in Table 1. As a comparative example, Table 1 shows the results of desulfurization treatment using a subordinate CaC2-CaC03 desulfurization agent under the same conditions. Table 1 (Note 1) Decapitation rate purple = S before debishu - S after debisatsu* X,.
〇幌腕前Ｓ発（注２）実験修４及び修５は比較例である
。〇 From the hood skill S (Note 2) Experimental training 4 and training 5 are comparative examples.
実施例 ２ＣＭＣを３重量％としＣａＣ２とＣａＣ０３
の割合を変えた以外は実施例１と同様に行った。脱硫剤
の配合および結果を第２表に示す。第２表
（注）実験修．９，豚１０及び修１１は比較例を示す。Example 2 CaC2 and CaC03 with 3% by weight of CMC
The same procedure as in Example 1 was carried out except that the proportion of was changed. Table 2 shows the composition of the desulfurizing agent and the results. Table 2 (Note) Experimental training. 9, Buta 10 and Osamu 11 show comparative examples.
実施例 ３ＣＭＣをＭＣに変えた以外実施例１と同様に
行つた。Example 3 The same procedure as in Example 1 was carried out except that CMC was replaced with MC.
脱硫剤の配合および結果を第３表に示す。なお実験Ｎｏ
．１５は比較例を示す。第３表Table 3 shows the composition of the desulfurizing agent and the results. Furthermore, experiment no.
．． 15 shows a comparative example. Table 3
Claims (1)
軽質ＣａＣＯ＿３粉末４〜２５重量％およびセルロース
誘導体粉末１〜５重量％とからなる溶銑の脱硫剤。1 A hot metal desulfurization agent comprising 70 to 95% by weight of CaC_2 powder, 4 to 25% by weight of light CaCO_3 powder with a particle size of 2 μ or less, and 1 to 5% by weight of cellulose derivative powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8756577A JPS609083B2 (en) | 1977-07-21 | 1977-07-21 | Hot metal desulfurization agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8756577A JPS609083B2 (en) | 1977-07-21 | 1977-07-21 | Hot metal desulfurization agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5421913A JPS5421913A (en) | 1979-02-19 |
| JPS609083B2 true JPS609083B2 (en) | 1985-03-07 |
Family
ID=13918504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8756577A Expired JPS609083B2 (en) | 1977-07-21 | 1977-07-21 | Hot metal desulfurization agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS609083B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03212880A (en) * | 1990-01-17 | 1991-09-18 | Fujitsu Ltd | Cleaner for optical disk |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62126096U (en) * | 1986-02-03 | 1987-08-10 |
-
1977
- 1977-07-21 JP JP8756577A patent/JPS609083B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03212880A (en) * | 1990-01-17 | 1991-09-18 | Fujitsu Ltd | Cleaner for optical disk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5421913A (en) | 1979-02-19 |
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