JPH05125465A - Production of ferronickel - Google Patents
Production of ferronickelInfo
- Publication number
- JPH05125465A JPH05125465A JP29656591A JP29656591A JPH05125465A JP H05125465 A JPH05125465 A JP H05125465A JP 29656591 A JP29656591 A JP 29656591A JP 29656591 A JP29656591 A JP 29656591A JP H05125465 A JPH05125465 A JP H05125465A
- Authority
- JP
- Japan
- Prior art keywords
- ore
- rotary kiln
- water
- ferronickel
- roasting
- 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.)
- Withdrawn
Links
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
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はフェロニッケルを製造す
る方法に関する。FIELD OF THE INVENTION The present invention relates to a method for producing ferronickel.
【従来技術とその問題点】一般に酸化ニッケル鉱石を原
料とするフェロニッケルは、粉砕鉱石をロータリキルン
でか焼した後、電気炉でＦｅ、Ｎｉを溶融還元し、シリ
カ、マグネシアはスラグとして取り除くことにより製造
されている。したがって、Ｎｉ鉱石中のシリカ、マグネ
シアも電気炉で金属成分と共に溶解されるため、無駄な
エネルギーを消費することになる。2. Description of the Related Art Generally, ferronickel made from nickel oxide ore is obtained by calcining crushed ore in a rotary kiln, then smelting and reducing Fe and Ni in an electric furnace, and removing silica and magnesia as slag. Are manufactured by. Therefore, silica and magnesia in the Ni ore are also melted together with the metal components in the electric furnace, which consumes useless energy.
【０００２】従来、ガーニエライト、ラテライト等の酸
化ニッケル鉱をロータリーキルンで還元し、磁選により
フェロニッケルを得る方法は多く研究されているが、操
業性が悪い、還元率、収率が低いなどの問題点がある。
たとえば、特願昭４４−１０２２６９では、乾燥もしく
はか焼後、粉砕したラテライト、ＭｇＯ／ＳｉＯ2が
０.７以下、Ａｌ2Ｏ3／ＭｇＯが０.６以上となるように
配合したものを原料とし、その理論還元所用量の７０〜
１２０％の内装炭材を配合混合した後、これを造粒また
は製団する第１工程と、前記第１工程で得られた含炭成
型物と前記理論還元所用量の５％以上の外装炭材とをロ
ータリーキルンに装入し、最高温度帯の原料を１０００
〜１３００℃に加熱して、前記含炭成型物の鉄還元率を
５０〜９０％、ニッケル還元率を６０〜９０％以上とし
ている。特願昭４０−７７４３２では含ニッケル酸化鉄
鉱石を還元剤、硫黄源と共にロータリーキルン内に装入
し焙焼、粉砕、磁選し、ニッケルの回収率 ９１.３〜９
２.５％、 鉄の回収率１６.０〜４０.１％を得ている。
このときペレットまたはブリケットに石灰などをまぶさ
ないで操業すると装入物の一部が溶融し、ロータリーキ
ルンの炉壁に付着することがあると記載されている。ま
た、本出願人はすでにケイ酸苦土ニッケル鉱石の処理方
法について特許出願した（特願昭６３−２４７３１９、
特願平１−１００２２８、特願平１−３３０１２７、特
願平２−２４１６９３）。特願昭６３−２４７３１９で
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Ｎｉ原料を
得ることを特徴とするケイ酸苦土ニッケル鉱石の処理方
法を開示した。特願平１−１００２２８は、ケイ酸苦土
ニッケル鉱石を塩酸で浸出処理してＳｉＯ2を主成分と
する浸出残渣 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または噴霧し、乾燥、焙焼してＮ
ｉ、Ｆｅの全量とＭｇの一部を水不溶物とし、かつ塩酸
ガスを回収する工程（乾燥焙焼工程）、 焙焼生成物を水
洗してＮｉ、Ｆｅ全量とＭｇの一部からなる水不溶物と
ＭｇＣｌ2水溶液とに分離する工程（水洗工程)、よりな
るケイ酸苦土ニッケル鉱石の処理方法である。特願平１
−３３０１２７は、ケイ酸苦土ニッケル鉱石を塩酸で浸
出処理してＳｉＯ2を主成分とする浸出残渣と Ｎｉ、Ｆ
ｅ、Ｍｇを含む浸出液とに分離する工程(浸出工程)、浸
出液を乾燥し、Ｎｉ、Ｆｅ、Ｍｇの塩化物を主成分とす
る乾燥物を得、かつ未反応の塩酸を回収する工程(乾燥
工程)、乾燥物を、１５０℃以上、２５０℃未満の温度
で焙焼してＮｉ、Ｆｅの全量とＭｇの一部を水不溶物と
し、かつ塩酸ガスを回収する工程(焙焼工程)、焙焼生成
物を水洗いしてＮｉ、Ｆｅ全量とＭｇの一部からなる水
不溶物と ＭｇＣｌ2水溶液とに分離する工程（水洗工
程)、よりなるケイ酸苦土ニッケル鉱石の処理方法であ
る。また、特願平２−２４１６９３では、上記工程のう
ち乾燥工程と焙焼工程を同時に行う方法で、１５０℃以
上、２５０℃未満の温度で乾燥、焙焼する事を特徴とす
るケイ酸苦土ニッケル鉱石の処理方法である。上記処理
方法により得られたＮｉ鉱石処理物は、酸化物として得
られるので、溶融還元して利用されている。本発明者ら
は、前記Ｎｉ鉱石処理物をロータリーキルンで焙焼処理
してフェロニッケルに転化することに成功した。本発明
は、Ｎｉ鉱石を、粉砕、塩酸浸出、濾過、浸出液の乾
燥、焙焼、水浸出、濾過、水浸出残渣の焙焼の各工程に
より処理して得られるＮｉ鉱石処理物を還元材と混合し
ペレットあるいはブリケットとし、これをロータリーキ
ルン内に装入して、４００〜１３００℃で還元すること
からなるフェロニッケルの製造方法を提供する。[0002] Conventionally, many methods have been studied to obtain ferronickel by magnetic separation by reducing nickel oxide ores such as garnierite and laterite with a rotary kiln, but problems such as poor operability, low reduction rate and low yield are problematic. There is a point.
For example, in Japanese Patent Application No. 44-102269, laterite and MgO / SiO 2 crushed after drying or calcination are
The raw material is a mixture of 0.7 or less and Al 2 O 3 / MgO of 0.6 or more.
A first step of blending and mixing 120% of interior carbonaceous material, and then granulating or conglomerating the same, a coal-containing molded product obtained in the first step, and exterior charcoal of 5% or more of the theoretical reducing station dose. The material is charged into the rotary kiln, and the raw material in the maximum temperature range is 1000
It is heated to ˜1300 ° C., and the iron reduction rate and the nickel reduction rate of the carbon-containing molded product are set to 50 to 90% and 60 to 90% or more, respectively. In Japanese Patent Application No. 40-77432, nickel-containing iron oxide ore is charged into a rotary kiln together with a reducing agent and a sulfur source, roasted, crushed and magnetically separated, and the nickel recovery rate is 91.3-9.
2.5%, iron recovery rate 16.0-40.1%.
At this time, it is described that if the pellets or briquettes are operated without being sprinkled with lime or the like, a part of the charge may be melted and adhere to the furnace wall of the rotary kiln. In addition, the present applicant has already filed a patent application for a method for treating magnesium silicate nickel ore (Japanese Patent Application No. 63-247319,
Japanese Patent Application No. 1-100228, Japanese Patent Application No. 1-330127, Japanese Patent Application No. 2-241693). In Japanese Patent Application No. 63-247319, Ni ore is crushed, leached with hydrochloric acid, filtered, dried, roasted,
Disclosed is a method for treating magnesium nickel silicate ore, which is characterized by obtaining a Ni raw material by treatment through water leaching, filtration, and roasting steps. Japanese Patent Application No. 1-100228 discloses a process (leaching process) in which a magnesium silicate nickel ore is leached with hydrochloric acid to separate it into a leaching residue containing SiO 2, as a main component, a leaching liquid containing Ni, Fe, and Mg. Drop or spray in a roasting furnace maintained at 250 to 500 ° C., dry and roast to obtain N.
i, a step in which the total amount of Fe and a part of Mg are made insoluble in water and a hydrochloric acid gas is recovered (dry roasting step), water containing the total amount of Ni and Fe and a part of Mg washed with water A method for treating a nickel ore magnesium silicate ore comprising a step of separating an insoluble matter and a MgCl 2 aqueous solution (water washing step). Japanese Patent Application 1
-330127 is a leaching residue containing SiO 2 as a main component, which is obtained by leaching magnesium silicate nickel ore with hydrochloric acid, and Ni, F.
e, a step of separating it into a leachate containing Mg (leaching step), a step of drying the leachate to obtain a dried product containing Ni, Fe and Mg chlorides as main components and recovering unreacted hydrochloric acid (drying Step), a step of roasting the dried product at a temperature of 150 ° C. or higher and lower than 250 ° C. to make all of Ni and Fe and a part of Mg water-insoluble, and recovering hydrochloric acid gas (roasting step), The method for treating magnesium nickel silicate ore comprises a step of washing the roasted product with water to separate it into a water-insoluble matter consisting of the total amount of Ni and Fe and a part of Mg and a MgCl 2 aqueous solution (water washing step). Further, in Japanese Patent Application No. 2-241693, a method of simultaneously performing a drying step and a roasting step among the above-mentioned steps, drying and roasting at a temperature of 150 ° C. or higher and lower than 250 ° C. is carried out, and silicic acid silicate is characterized. This is a method of treating nickel ore. The treated Ni ore product obtained by the above-mentioned treatment method is obtained as an oxide, and thus is melt-reduced and used. The present inventors succeeded in roasting the Ni ore processed product in a rotary kiln to convert it into ferronickel. The present invention uses a treated Ni ore as a reducing agent, which is obtained by treating Ni ore by crushing, hydrochloric acid leaching, filtration, drying of a leaching solution, roasting, water leaching, filtration, and roasting of a water leaching residue. Provided is a method for producing ferronickel, which comprises mixing pellets or briquettes into a rotary kiln and reducing the pellets or briquettes at 400 to 1300 ° C.
【０００３】本発明ではＮｉ鉱石を上記特許出願に記載
された湿式方法によって処理して製造したＮｉ酸化物を
炭材と混合し、ペレットあるいはブリケットをつくり、
ロータリーキルンで還元することにより、フェロニッケ
ルを製造する。炭材の混合割合は Ｎｉ鉱石処理物中の
Ｎｉと鉄を還元するのに必要な量の１.１〜１.２倍とし
た。これは、Ｎｉおよび鉄の還元率を高くするためであ
る。 ロータリーキルンでの還元処理温度を９００〜１
３００℃、この温度での加熱時間３０〜６０分となる条
件で実験を行った。このとき、Ｎｉの還元率は８０〜１
００％、鉄の還元率は５０〜９０％であった。還元処理
温度が９００℃未満ではＮｉの還元率が低く、１３００
℃を越える温度ではロータリーキルン内でのリングの形
成が起き、操業が困難である。この後、粉砕、磁選など
の処理によりマグネシアを除いてもよい。しかし、Ｎｉ
鉱石処理物中のマグネシアの割合は小さいので、そのま
ま電気炉などに投入し、Ｎｉ源として使用できる。In the present invention, Ni ore is treated by the wet method described in the above-mentioned patent application, and the produced Ni oxide is mixed with carbonaceous material to form pellets or briquettes.
Ferronickel is produced by reduction in a rotary kiln. The mixing ratio of the carbonaceous material was set to 1.1 to 1.2 times the amount required to reduce Ni and iron in the treated Ni ore product. This is to increase the reduction rate of Ni and iron. The reduction treatment temperature in the rotary kiln is 900-1
The experiment was conducted under the conditions of 300 ° C. and the heating time at this temperature for 30 to 60 minutes. At this time, the reduction rate of Ni is 80 to 1
The reduction ratio of 00% and iron was 50 to 90%. When the reduction treatment temperature is lower than 900 ° C, the reduction rate of Ni is low, and it is 1300.
If the temperature exceeds ℃, ring formation occurs in the rotary kiln, and operation is difficult. After this, magnesia may be removed by a process such as crushing or magnetic separation. However, Ni
Since the proportion of magnesia in the processed ore product is small, it can be put into an electric furnace or the like as it is and used as a Ni source.
【０００４】[0004]
【実施例】Ｎｉ ２.３９％、Ｆｅ １４.７１％、ＭｇＯ
２６.７０％、ＳiＯ2 ３４.２０％の組成のケイ酸苦土
ニッケル鉱石を８０メッシュ以下に粉砕し、この鉱石５
５ｋｇを６０〜９０℃の６規定塩酸２２０リットル中で
２時間浸出を行い、Ｎｉ、Ｆｅ、Ｍｇを抽出した。この
浸出液を濾過してシリカを除去した。この塩酸浸出液を
スプレードライヤー内に噴霧して、熱風により乾燥し塩
化物を得た。この乾燥粉を３５０℃に保ったロータリー
キルン中に装入し、焙焼を行った。このときの平均滞留
時間は１時間であった。得られた焙焼物を水浸出し水不
溶物とＭｇＣｌ2を含む水溶物を得た。 この水不溶物を
分離乾燥後、７００〜８００℃で焙焼した。 このＮｉ
鉱石処理物中のＮｉと鉄を還元するのに必要な量の１.
１倍の炭材と混合しながらパン型ペレタイザーで直径約
１０ｍｍのペレットとした。このペレットを乾燥した
後、ロータリーキルンに装入した。炉内温度１１００℃
で約６０分還元を行った。このときのニッケルはほぼ１
００％還元され、鉄は約８５％還元された。還元したペ
レットを湿式粉砕し、磁選機でフェロニッケルと脈石成
分を分離した。フェロニッケルの組成はＮｉ １６.０％
であった。このときのＮｉの回収率は約９７％となっ
た。EXAMPLE Ni 2.39%, Fe 14.71%, MgO
Magnesium silicate nickel ore having a composition of 26.70% and SiO 2 34.20% is crushed to 80 mesh or less, and this ore 5
5 kg was leached in 220 liters of 6N hydrochloric acid at 60 to 90 ° C. for 2 hours to extract Ni, Fe and Mg. The leachate was filtered to remove silica. This hydrochloric acid leachate was sprayed into a spray dryer and dried with hot air to obtain chloride. The dried powder was placed in a rotary kiln kept at 350 ° C. and roasted. The average residence time at this time was 1 hour. The obtained roasted product was leached with water to obtain a water-soluble substance containing water-insoluble matter and MgCl 2 . The water-insoluble matter was separated and dried, and then roasted at 700 to 800 ° C. This Ni
The amount of 1. necessary for reducing Ni and iron in the ore processing product.
Pellets having a diameter of about 10 mm were made with a pan-type pelletizer while mixing with 1 time of carbonaceous material. The pellets were dried and then placed in a rotary kiln. Furnace temperature 1100 ° C
The reduction was carried out for about 60 minutes. Nickel at this time is almost 1
00% reduction, iron about 85% reduction. The reduced pellets were wet-milled and ferronickel and gangue components were separated by a magnetic separator. The composition of ferronickel is Ni 16.0%
Met. At this time, the recovery rate of Ni was about 97%.
【０００５】[0005]
【発明の効果】以上のように本発明方法において、Ｎｉ
鉱石を、粉砕、塩酸浸出、濾過、浸出液の乾燥、焙焼、
水浸出、濾過、水浸出残渣の焙焼の各工程により処理し
て得られたＮｉ鉱石処理物を、炭材と混合し、ペレット
あるいはプリケットをつくり、ロータリーキルンで還元
した後、粉砕、磁選することにより、フェロニッケルを
製造することができ、このまま電気炉などへの大量の使
用が可能となった。また、Ｎｉ鉱石処理物は鉱石を直接
還元する場合に比べ、還元率も高く、回収率も高い結果
となった。As described above, in the method of the present invention, Ni
Crush ore, leaching of hydrochloric acid, filtration, drying of leachate, roasting,
Mixing the treated Ni ore product obtained by each process of water leaching, filtration, and roasting of the water leaching residue with carbonaceous material to form pellets or preckets, reducing with a rotary kiln, crushing, and magnetic separation As a result, ferronickel can be produced, and it can be used in a large amount as it is in an electric furnace. Further, the treated Ni ore product has a higher reduction rate and a higher recovery rate than the case of directly reducing the ore.
Claims (1)
出液の乾燥、焙焼、水浸出、濾過、水浸出残渣の焙焼の
各工程により処理して得られるＮｉ鉱石処理物を還元材
と混合しペレットあるいはブリケットとし、これをロー
タリーキルン内に装入して、４００〜１３００℃で還元
することからなるフェロニッケルの製造方法。1. A treated material of Ni ore obtained by treating Ni ore by pulverization, hydrochloric acid leaching, filtration, drying of a leached solution, roasting, water leaching, filtration, and roasting of a water leaching residue. And a pellet or briquette, which is charged into a rotary kiln and reduced at 400 to 1300 ° C. to produce ferronickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29656591A JPH05125465A (en) | 1991-10-17 | 1991-10-17 | Production of ferronickel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29656591A JPH05125465A (en) | 1991-10-17 | 1991-10-17 | Production of ferronickel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05125465A true JPH05125465A (en) | 1993-05-21 |
Family
ID=17835195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29656591A Withdrawn JPH05125465A (en) | 1991-10-17 | 1991-10-17 | Production of ferronickel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05125465A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006089358A1 (en) * | 2005-02-24 | 2006-08-31 | Bhp Billiton Ssm Technology Pty Ltd | Production of ferronickel |
| WO2009038379A3 (en) * | 2007-09-21 | 2009-05-07 | Res Inst Ind Science & Tech | Method of manufacturing fe and ni containing material and cobalt containing material using recycling residue of spent catalyst and method of manufacturing raw material for stainless using the fe and ni containing material and method of manufacturing fe-ni alloy |
| WO2013100626A1 (en) * | 2011-12-28 | 2013-07-04 | 주식회사 포스코 | Method for recovering ferronickel from nickel ore |
| WO2014133421A1 (en) * | 2014-04-02 | 2014-09-04 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Method for processing laterite nickel ore with direct production of ferronickel |
| KR101630995B1 (en) * | 2014-12-26 | 2016-06-16 | 주식회사 포스코 | Method of forming a ferronikel |
| WO2016171579A1 (en) * | 2015-04-21 | 2016-10-27 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Low-temperature method for processing lateritic nickel ores so as to directly produce ferronickel |
| WO2018101855A1 (en) * | 2017-05-18 | 2018-06-07 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Method for processing nickel laterite ores resulting in the direct production of ferronickel |
-
1991
- 1991-10-17 JP JP29656591A patent/JPH05125465A/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006089358A1 (en) * | 2005-02-24 | 2006-08-31 | Bhp Billiton Ssm Technology Pty Ltd | Production of ferronickel |
| EA010796B1 (en) * | 2005-02-24 | 2008-12-30 | БиЭйчПи БИЛЛИТОН ЭсЭсЭм ТЕКНОЛОДЖИ ПТИ ЛТД. | Production of ferronickel |
| US7585350B2 (en) | 2005-02-24 | 2009-09-08 | Bhp Billiton Ssm Technology Pty Ltd. | Production of ferronickel |
| WO2009038379A3 (en) * | 2007-09-21 | 2009-05-07 | Res Inst Ind Science & Tech | Method of manufacturing fe and ni containing material and cobalt containing material using recycling residue of spent catalyst and method of manufacturing raw material for stainless using the fe and ni containing material and method of manufacturing fe-ni alloy |
| JP2010540767A (en) * | 2007-09-21 | 2010-12-24 | リサーチ インスティチュート オブ インダストリアル サイエンス アンド テクノロジー | Method for producing iron nickel-containing raw material and cobalt-containing raw material from petrochemical desulfurization catalyst recycling residue, method for producing stainless steel raw material using iron nickel-containing raw material, and method for producing ferronickel |
| US8882882B2 (en) | 2007-09-21 | 2014-11-11 | Research Institute Of Industrial Science & Technology | Method of manufacturing Fe and Ni containing material and cobalt containing material using recycling residue of spent catalyst and method of manufacturing raw material for stainless using the Fe and Ni containing material and method of manufacturing Fe-Ni alloy |
| CN104024445A (en) * | 2011-12-28 | 2014-09-03 | Posco公司 | Method for recovering ferronickel from nickel ore |
| WO2013100626A1 (en) * | 2011-12-28 | 2013-07-04 | 주식회사 포스코 | Method for recovering ferronickel from nickel ore |
| AU2012363552B2 (en) * | 2011-12-28 | 2015-11-19 | Posco | Method for recovering ferronickel from nickel ore |
| WO2014133421A1 (en) * | 2014-04-02 | 2014-09-04 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Method for processing laterite nickel ore with direct production of ferronickel |
| EA024653B1 (en) * | 2014-04-02 | 2016-10-31 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Method for processing laterite nickel ore with direct production of ferronickel |
| KR101630995B1 (en) * | 2014-12-26 | 2016-06-16 | 주식회사 포스코 | Method of forming a ferronikel |
| WO2016171579A1 (en) * | 2015-04-21 | 2016-10-27 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Low-temperature method for processing lateritic nickel ores so as to directly produce ferronickel |
| WO2018101855A1 (en) * | 2017-05-18 | 2018-06-07 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Method for processing nickel laterite ores resulting in the direct production of ferronickel |
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