JPH0356629A - Method for refining ni-containing alloy - Google Patents
Method for refining ni-containing alloyInfo
- Publication number
- JPH0356629A JPH0356629A JP1191518A JP19151889A JPH0356629A JP H0356629 A JPH0356629 A JP H0356629A JP 1191518 A JP1191518 A JP 1191518A JP 19151889 A JP19151889 A JP 19151889A JP H0356629 A JPH0356629 A JP H0356629A
- Authority
- JP
- Japan
- Prior art keywords
- ore
- refining
- melting
- raw material
- alloy
- 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 17
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 16
- 239000000956 alloy Substances 0.000 title claims abstract description 16
- 238000007670 refining Methods 0.000 title abstract description 8
- 238000002844 melting Methods 0.000 claims abstract description 17
- 230000008018 melting Effects 0.000 claims abstract description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002386 leaching Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 79
- 229910052759 nickel Inorganic materials 0.000 abstract description 17
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 9
- 239000010935 stainless steel Substances 0.000 abstract description 9
- 239000002893 slag Substances 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000395 magnesium oxide Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 238000005261 decarburization Methods 0.000 abstract description 4
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000002184 metal Substances 0.000 description 16
- 239000011777 magnesium Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 229910000480 nickel oxide Inorganic materials 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000013980 iron oxide Nutrition 0.000 description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229910000863 Ferronickel Inorganic materials 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- FMQXRRZIHURSLR-UHFFFAOYSA-N dioxido(oxo)silane;nickel(2+) Chemical compound [Ni+2].[O-][Si]([O-])=O FMQXRRZIHURSLR-UHFFFAOYSA-N 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 229910001710 laterite Inorganic materials 0.000 description 1
- 239000011504 laterite Substances 0.000 description 1
- -1 lliNi Chemical compound 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はステンレス鋼やＮ１を多量に含有する合金を溶
製する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for producing stainless steel or an alloy containing a large amount of N1.
（従来技術とその問題点）
一般にオーステナイト系ステンレス鋼のように多量のＮ
ｉを含有する合金を溶製するには、あらかじめ高炭素フ
ェロニッケルやＮｉ含有スクラップ等のＮｉ源を電気炉
等の溶解炉で溶融し、その溶融粗金金を上吹きまたは底
吹き転炉、あるいはＡＯＤ炉に送入し，Ｏ，ガス等を吹
き込んで脱炭等の精錬を行っている．
オーステナイト系ステンレス鋼のように多量にＮｉを含
む合金ではその製鋼コストのうちＮｉ源の占める割合は
極めて大きく、したがって安価なＮｉ源の使用が強く望
まれている。(Prior art and its problems) Generally, a large amount of N is used in austenitic stainless steel.
To melt an alloy containing i, a Ni source such as high carbon ferronickel or Ni-containing scrap is first melted in a melting furnace such as an electric furnace, and the molten crude gold is heated in a top-blown or bottom-blown converter. Alternatively, it is sent to an AOD furnace and blown with O, gas, etc. to perform decarburization and other refining. In alloys containing a large amount of Ni, such as austenitic stainless steel, the Ni source accounts for a very large proportion of the steel manufacturing cost, and therefore it is strongly desired to use an inexpensive Ni source.
（従来技術とその問題点）
従来Ｎｉ含有合金のＮｉ源は主として高炭素フエ口ニッ
ケル、Ｎｉ含有スクラップが使われ、成分調整用に低炭
素フエ口ニッケル、純Ｎｉ、ニッケルオキサイドシンタ
ー等が使われている。しかし，いずれのＮｉ源も極めて
高価であり、製造コストが高くなる問題点がある．
（発明の構成）
本発明はＮｉ鉱石を、粉砕、塩酸浸出、濾過，乾燥・焙
焼、水浸出、濾過、焙焼の各工程により処理して得られ
たＮｉ鉱石処理物を、Ｎｉ含有合金溶製時のＮｉ＠とし
て用いることにより従来のフェロニッケル、純Ｎｉ、ニ
ッケルオキサイドシンター等のＮｉ源を用いる方法に比
べて，安価にＮｉ含有合金を溶製することを図ったもの
である．
本出願の方法が適用されるＮｉ鉱石は具体的にはケイ酸
苦土ニッケル鉱石、ラテライトである。(Prior art and its problems) Conventional Ni sources for Ni-containing alloys are mainly high-carbon nickel and Ni-containing scrap, and low-carbon nickel, pure Ni, nickel oxide sinter, etc. are used for component adjustment. ing. However, both Ni sources are extremely expensive and have the problem of increasing manufacturing costs. (Structure of the Invention) The present invention processes Ni ore through the steps of crushing, hydrochloric acid leaching, filtration, drying/roasting, water leaching, filtration, and roasting. By using Ni@ as Ni@ during melting, it is possible to melt Ni-containing alloys at a lower cost than conventional methods using Ni sources such as ferronickel, pure Ni, and nickel oxide sinter. Specifically, the Ni ore to which the method of the present application is applied is magnesium silicate nickel ore and laterite.
本出願のうちでＮｉ鉱石の予備処理法は、既に本願発明
者の一部により特許出願されている（特願昭６２−１５
９７６５、特願昭６２−２５３５５７）．この方法は、
ケイ酸苦土ニッケル鉱石を塩酸で浸出処理してＳｉｎ，
を主或分とする浸出残渣とＮｉ、Ｆｅ． Ｍｇを含む浸
出液とに分離する工程（浸出工程）、浸出液を２５０〜
５００℃に保持した焙焼炉中に滴下あるいは噴霧し、乾
燥・焙焼しＦｅの全量を酸化物，Ｍｇの一部とＮｉの全
量を（Ｍｇ．Ｎｉ）ＯＨＣＩとし、かつＭｇの大部分を
塩化マグネシウムとする工程（乾燥・焙焼工程）、焙焼
生成物を水洗してＦｅの酸化物の全量および水に不溶の
（Ｍｇ． Ｎｉ）ＯＨＣＩとして存在するＭｇの一部と
Ｎｉの全量を水溶液より分離する工程（水洗工程）、よ
りなることを特徴とするケイ酸苦土ニッケル鉱石の処理
方法である．
本発明では上記特許出願に記載された方法によって製造
したｙ１鉱石処理物をそのままか、あるいは焙焼しＣｌ
を除いた後、Ｎｉ含有合金溶製時のＮｉ源として使用す
ることにより、従来のフエ口ニッケル、純Ｎｉ，ニッケ
ルオキシド・シンター等のＮｉ′ｇを使用するよりも、
低コストでＮｉ含有合金を製造できることを特徴とする
．
Ｎｉ鉱石処理物は主としてＦｅ， Ｍ（， Ｎｉｉの酸
化物あるいはこれら酸化物とＮｕ． Ｍｇのオキシ塩化
物で構威されているので、Ｎｉ鉱石処理物を溶湯中に添
加するとＦａとＮ１はほぼｌＯＯ％還元されて溶湯中に
入る．一方、Ｍｇの化合物は溶融しスラグ相に入る．こ
の際，酸化鉄、Ｎｉのオキシ塩化物または酸化物の分解
により発生する酸素によって、脱炭が促進され，精錬時
間の短縮、酸素単位の減少を図ることができる．さらに
、酸化鉄，酸化Ｎｉの分解反応，ｘｇＯの溶解は吸熱反
応であるので、ｌｌｆｉ鉱石処理物の投入によって溶湯
の温度を制御できる．また、Ｎｉ鉱石処理物に含まれる
Ｍｇのオキシ塩化物あるいは酸化物は溶解してＭｇＯと
なリスラグ中に入り、スラグ中のＭｇＯ含有量が増える
ため、耐火物の溶損を少なくする効果がある．
このように、従来のＮｉ含有合金を溶製する際のＮｉ源
であるフエ口ニッケル、，ｌｌｉＮｉ、ニッケルオキサ
イドシンター等に代わってＮｉ鉱石処理物を用いること
により、製造コストを下げることができる利点の他に，
説炭を促進して精錬時間を短縮し，出湯温度の調整も可
能としかつスラグの或分ｍＭも行うことができる利点が
ある。The pretreatment method for Ni ore in this application has already been patented by some of the inventors of this application (Japanese Patent Application No. 62-15
9765, patent application No. 62-253557). This method is
Sin, which is produced by leaching silicate nickel ore with hydrochloric acid,
The leaching residue mainly contains Ni, Fe. The process of separating the leachate from the leachate containing Mg (leaching process), the leachate is
Dropped or sprayed into a roasting furnace maintained at 500°C, dried and roasted to convert the total amount of Fe into oxide, a portion of Mg and the total amount of Ni into (Mg.Ni)OHCI, and most of Mg into OHCI. In the step of forming magnesium chloride (drying/roasting step), the roasted product is washed with water to remove the total amount of Fe oxide and a portion of Mg and Ni present as water-insoluble (Mg.Ni)OHCI. This is a method for processing nickel silicate ore, which is characterized by comprising a step of separating it from an aqueous solution (water washing step). In the present invention, the processed y1 ore produced by the method described in the above patent application is used either as it is or by roasting.
By using Ni'g as a Ni source when melting Ni-containing alloys after removing the
It is characterized by the ability to manufacture Ni-containing alloys at low cost. Processed Ni ore is mainly composed of oxides of Fe, M(, Nii, or these oxides and oxychloride of Nu.Mg), so when processed Ni ore is added to the molten metal, Fa and N1 are almost It is reduced by 1OO% and enters the molten metal.Meanwhile, the Mg compound melts and enters the slag phase.At this time, decarburization is promoted by oxygen generated by the decomposition of iron oxide, Ni oxychloride, or oxide. , it is possible to shorten the refining time and reduce the oxygen unit.Furthermore, since the decomposition reaction of iron oxide and Ni oxide and the dissolution of xgO are endothermic reactions, the temperature of the molten metal can be controlled by adding the processed llfi ore. In addition, the Mg oxychloride or oxide contained in the processed Ni ore dissolves and enters the reslag into MgO, increasing the MgO content in the slag, which has the effect of reducing the erosion of refractories. As described above, manufacturing costs can be reduced by using processed Ni ore instead of conventional Ni sources such as Huekuchi nickel, lliNi, nickel oxide sinter, etc. when melting Ni-containing alloys. In addition to the advantages of
It has the advantage of accelerating coal melting, shortening the refining time, making it possible to adjust the tapping temperature, and also being able to reduce the slag to a certain extent.
（発明の具体的開示）
次に実施例を掲げるが本発明はこれに限定されるもので
はない。(Specific Disclosure of the Invention) Examples are given below, but the present invention is not limited thereto.
実施例１
ニューカレドニア産ガーニエライトを８０メッシュ以下
に粉砕し，６規定塩酸で大気圧下６０〜９０℃で３時間
浸出した．この時、Ｎｉ． Ｆｅはほぼ１００％浸出し
た．この塩酸浸出液を濾過しＳｉｎ，を除去した．この
濾液を乾燥焙焼炉に肩下し３００〜３５０℃に保持した
流動層中で乾燥焙焼した．この焙焼生或物を重量で２〜
３倍の水によって水浸出し、１１ｇｃｌ，を含む水溶物
と、Ｆｅの酸化物とＮｉとＭｇのオキシ塩化物からなる
水洗残渣を得た．この水洗残渣を乾燥後７００℃で焙焼
した．このＮｉ鉱石処理物のＮｉ含有量は１２．０％．
Ｆｅ含有量は３７．４％． Ｍｇ含有量は１１．６％
であった。このＮｉ鉱石処理物は０，５ｔ／ｔ一鉱石の
割合で得られた。Example 1 Garnierite from New Caledonia was crushed to 80 mesh or less and leached with 6N hydrochloric acid at 60-90°C under atmospheric pressure for 3 hours. At this time, Ni. Almost 100% of Fe was leached out. This hydrochloric acid leachate was filtered to remove Sin. This filtrate was transferred to a dry roasting furnace and dried and roasted in a fluidized bed maintained at 300 to 350°C. The weight of this roasted raw food is 2~
Water leaching was carried out with 3 times as much water to obtain a water-washed residue consisting of an aqueous solution containing 11 gcl, an oxide of Fe, and oxychlorides of Ni and Mg. The water-washed residue was dried and roasted at 700°C. The Ni content of this processed Ni ore is 12.0%.
Fe content is 37.4%. Mg content is 11.6%
Met. This processed Ni ore was obtained at a rate of 0.5 t/t/ore.
溶解炉でスクラップおよびフェロクロム、フエ口ニッケ
ルをまえもって溶解した．この母溶湯の成分はＣ ２．
０％． Ｓｉ ０．４０％、Ｃｒ １９．１％、Ｎｉ
７．Ｑ％である．この母溶湯を転炉に移し、酸素吹錬を
行ない． Ａｒ攪拌しながら，説炭精錬を行った．この
攪拌ガスと伴に上記Ｎｉ鉱石処理物微粉末を溶湯１ｔ当
り０．１２４ｔ吹き込んだ。このＮｉ鉱石処理物微粉末
の吹き込みにより溶湯中のＮｉ含有量は約１．０％増加
して８．０％となった。また、鉄酸化物もほぼ全量が還
元されるため溶湯量は、母溶湯ｔ当り０．０６１ ｔ増
加した．脱炭速度は従来法（Ｎｉ鉱石処理物微粉末を添
加せず他の条件は同一とした場合）に比較して０．００
６％Ｃ／ｍｉｎ程度速くなった．この時、ＮｉおよびＦ
ｅの酸化物の分解吸熱反応あるいはＭｇＯの溶解潜熱に
よる冷却効果により、溶湯温度は４０℃低下した． Ｍ
ｇＯは完全に溶解してスラグ中に入った．上記実施例に
おけるＮｉ鉱石処理物の吹き込み量と溶湯中の増加分を
対比すれば吹き込んだＮｉ鉱石処理物のＮｉおよびＦｅ
はほとんど全量還元して合金中に入ることが明らかであ
る．実施例２
実施例１と同様にして製造したＮｉ鉱石処理物と予備還
元したＣｒ鉱石ペレット（ＳＲＣベレット）を溶融還元
して１８％Ｃｒ−８％Ｎｉ−５％Ｃの含ニッケルステン
レス素溶湯を製造した．
種湯として０．３ｔ／ｔ−１８−８ステンレス鋼の溶湯
を装入した溶融還元炉中にＮｉ鉱石処理物０．６７ｔ／
ｔ−１８−８ステ’／Ｌｚス鋼、ＳＲＣぺＬ／ット０．
３５０ｔ／ｔ−１８−８ステンレス鋼および塊コークス
、フラックス（石灰、珪砂）を連続的に添加し、酸素吹
精を行った．原料を装入し終わったときのスラグ組成は
ｑｇｏ ＝２２％、Ｓｉｎ２＝ ３０％、ＣａＯ ＝
３５％、Ａｌ２０３＝ １５％であった。Scrap, ferrochrome, and nickel were melted in advance in a melting furnace. The component of this mother molten metal is C2.
0%. Si 0.40%, Cr 19.1%, Ni
7. Q%. This mother molten metal is transferred to a converter and subjected to oxygen blowing. Coal refining was performed while stirring with Ar. Together with this stirring gas, 0.124 t of the Ni ore treated fine powder was blown per 1 t of molten metal. The Ni content in the molten metal increased by about 1.0% to 8.0% by blowing the Ni ore processed powder into the melt. Furthermore, since almost all of the iron oxides were reduced, the amount of molten metal increased by 0.061 t per t of mother molten metal. The decarburization rate was 0.00 compared to the conventional method (when no Ni ore processed powder was added and other conditions were the same).
It became faster by about 6%C/min. At this time, Ni and F
The molten metal temperature decreased by 40°C due to the endothermic decomposition reaction of the oxide of e or the cooling effect due to the latent heat of dissolution of MgO. M
gO was completely dissolved and entered the slag. Comparing the amount of injected Ni ore processed material in the above example and the increase in the amount in the molten metal, the amount of Ni and Fe in the injected Ni ore processed material is
It is clear that almost the entire amount of is reduced and enters the alloy. Example 2 Processed Ni ore produced in the same manner as in Example 1 and pre-reduced Cr ore pellets (SRC pellets) were melted and reduced to produce 18% Cr-8% Ni-5% C nickel-containing stainless steel molten metal. Manufactured. 0.67 t/g of processed Ni ore was placed in a smelting reduction furnace charged with 0.3 t/t/t-18-8 stainless steel molten metal as seed water.
T-18-8 ST'/Lz steel, SRC PeL/t0.
350t/t-18-8 stainless steel, lump coke, and flux (lime, silica sand) were continuously added, and oxygen blowing was performed. The slag composition after charging the raw materials is qgo = 22%, Sin2 = 30%, CaO =
35%, Al203=15%.
実施例３
実施例１と同様にして製造したＮｉ鉱石処理物と予備還
元したＣｒ鉱石ペレット（ＳＲＣペレット）を溶融還元
して得られた溶湯と、スクラップを溶かして得られた溶
湯をあわせて、Ｉ８％Ｃｒ−８％Ｎｉ−５％Ｃの含ニッ
ケルステンレス素溶湯を製造した。Example 3 A molten metal obtained by melting and reducing a processed Ni ore produced in the same manner as in Example 1 and pre-reduced Cr ore pellets (SRC pellets) and a molten metal obtained by melting scrap were combined. A molten nickel-containing stainless steel containing I8%Cr-8%Ni-5%C was produced.
電気炉あるいは炭材を用いた脱電力炉でスクラップを溶
解した．得られたｌ５％Ｃｒ−７％Ｎｉ−５％Ｃの溶湯
の０．７２３ｔ／ｔ−１８−８ステンレス鋼を種湯とし
、これにＮｉ鉱石処理物０．２６７ｔ／ｔ−１８−８ス
テンレス鋼、ＳＲＣベレット０．１３９ｔ／ｔ−１８−
１ｔステンレスｍおよび塊コークス、フラックス（石灰
、珪砂）を連続的に添加し、酸素吹精を行った．原料を
装入し終わったときのスラグ組成は、ＭｇＯ ＝ ２９
％、Ｓｉｎ２＝３５％，ＣａＯ ＝３１％．Ａ１，Ｏ，
＝５％であった．（発明の効果）The scrap was melted in an electric furnace or a power-free furnace using carbonaceous materials. The obtained 15%Cr-7%Ni-5%C molten metal of 0.723t/t-18-8 stainless steel was used as a seed water, and 0.267t/t-18-8 stainless steel of the treated Ni ore was added to it. , SRC pellet 0.139t/t-18-
1 ton of stainless steel, lump coke, and flux (lime, silica sand) were continuously added, and oxygen blowing was performed. The slag composition after charging the raw materials is MgO = 29
%, Sin2=35%, CaO=31%. A1, O,
= 5%. (Effect of the invention)
Claims (1)
Ｎｉ鉱石を、粉砕、塩酸浸出、濾過、乾燥・焙焼、水浸
出、濾過、焙焼の各工程により処理して得られたＮｉ原
料を用いることを特徴とするＮｉ含有合金の溶製方法。 ２、Ｎｉ原料の還元溶解方法として、溶融還元法を用い
ることを特徴とする、請求項１に記載のＮｉ含有合金の
溶製方法。 ３、Ｎｉ原料の還元溶解方法としての溶融還元法と、ス
クラップ溶解法を、組合せて用いることを特徴とする、
請求項１に記載のＮｉ含有合金の溶製方法。[Claims] 1. When melting a Ni-containing alloy, as the Ni content,
A method for melting a Ni-containing alloy, characterized by using a Ni raw material obtained by processing Ni ore through the steps of crushing, hydrochloric acid leaching, filtration, drying/roasting, water leaching, filtration, and roasting. 2. The method for producing a Ni-containing alloy according to claim 1, characterized in that a melting reduction method is used as the method for reducing and melting the Ni raw material. 3. Characterized by using a combination of a melting reduction method as a method for reducing and melting Ni raw materials and a scrap melting method,
A method for producing a Ni-containing alloy according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1191518A JPH0356629A (en) | 1989-07-26 | 1989-07-26 | Method for refining ni-containing alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1191518A JPH0356629A (en) | 1989-07-26 | 1989-07-26 | Method for refining ni-containing alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0356629A true JPH0356629A (en) | 1991-03-12 |
Family
ID=16275991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1191518A Pending JPH0356629A (en) | 1989-07-26 | 1989-07-26 | Method for refining ni-containing alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010522824A (en) * | 2007-03-29 | 2010-07-08 | エム．カー．エヌ．テクノロジース ゲゼルシャフト ミット ベシュレンクテル ハフツング | Melt metallurgy process for the production of metal melts and transition metal-containing additive materials used therefor |
-
1989
- 1989-07-26 JP JP1191518A patent/JPH0356629A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010522824A (en) * | 2007-03-29 | 2010-07-08 | エム．カー．エヌ．テクノロジース ゲゼルシャフト ミット ベシュレンクテル ハフツング | Melt metallurgy process for the production of metal melts and transition metal-containing additive materials used therefor |
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