JPH03253520A - Treatment of nickel oxide ore - Google Patents
Treatment of nickel oxide oreInfo
- Publication number
- JPH03253520A JPH03253520A JP5189290A JP5189290A JPH03253520A JP H03253520 A JPH03253520 A JP H03253520A JP 5189290 A JP5189290 A JP 5189290A JP 5189290 A JP5189290 A JP 5189290A JP H03253520 A JPH03253520 A JP H03253520A
- Authority
- JP
- Japan
- Prior art keywords
- ore
- magnesium silicate
- mgo
- nickel oxide
- reducing agent
- 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.)
- Granted
Links
- 229910000480 nickel oxide Inorganic materials 0.000 title claims description 9
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 title claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 13
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 239000000654 additive Substances 0.000 claims abstract description 7
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 229910021538 borax Inorganic materials 0.000 claims abstract description 6
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims abstract description 4
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract 6
- 239000000377 silicon dioxide Substances 0.000 claims abstract 3
- 239000004328 sodium tetraborate Substances 0.000 claims abstract 2
- VLCLHFYFMCKBRP-UHFFFAOYSA-N tricalcium;diborate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-] VLCLHFYFMCKBRP-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 3
- 229910021540 colemanite Inorganic materials 0.000 claims 1
- 239000008188 pellet Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000571 coke Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 abstract 4
- 239000000391 magnesium silicate Substances 0.000 abstract 4
- 229910052919 magnesium silicate Inorganic materials 0.000 abstract 4
- 235000019792 magnesium silicate Nutrition 0.000 abstract 4
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910020413 SiO2—MgO Inorganic materials 0.000 abstract 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 1
- 239000004327 boric acid Substances 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000005453 pelletization Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000863 Ferronickel Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は製鋼原料となるニッケル、鉄混合物を製造する
ための酸化ニッケル鉱石の処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for processing nickel oxide ore for producing a nickel-iron mixture that is a raw material for steelmaking.
（従来技術とその問題点）
酸化ニッケル鉱石を用いたフェロニッケル製造方法とし
てはクルップレン法、キルン−電気炉法、溶鉱炉法など
が挙げられる。クルップレン法では鉱石と炭材１石灰石
等を混合造粒し、これを乾燥後ロータリーキルンに装入
し、還元、造滓、メタル造粒と反応過程を経由して生成
した半溶融物はクリンカーとして排出される。このクリ
ンカーは水砕された後、選別工程（粉砕、篩別、比重選
別、磁力選別）へ送られメタルが回収される。このプロ
セスは高価な電力の消費が少ないという利点を有する反
面、収率が低い、使用する炭材（１３〜１４％）や、石
灰（６〜７％）などの添加量が多い等の問題がある。(Prior art and its problems) Examples of methods for producing ferronickel using nickel oxide ore include the Kruppren method, the kiln-electric furnace method, and the blast furnace method. In the Krupplen method, ore and carbonaceous materials such as limestone are mixed and granulated, and after drying, this is charged into a rotary kiln, and the semi-molten material produced through the reaction process of reduction, slag, and metal granulation is discharged as clinker. be done. After this clinker is pulverized, it is sent to a sorting process (pulverization, sieving, specific gravity sorting, and magnetic sorting) to recover metals. Although this process has the advantage of low consumption of expensive electricity, it has problems such as low yield and large amounts of added carbon material (13-14%) and lime (6-7%). be.
一方キルンー電気炉法では、還元剤を配合して造粒した
鉱石をロータリーキルン（８００〜９００℃）で仮焼鉱
とし、これを電気炉に装入し、高温（約１６００℃）で
脈石ごと溶解するために漠大な電気エネルギーを消費す
る。また、溶鉱炉法においては多量の炭材（コークスを
３０％）とフラックス（石灰石を約１９％）、を消費す
ることが問題点として挙げられる。On the other hand, in the kiln-electric furnace method, the ore is granulated with a reducing agent and turned into calcined ore in a rotary kiln (800-900℃), which is then charged into an electric furnace and heated together with the gangue at a high temperature (approximately 1600℃). It consumes a large amount of electrical energy to melt. Another problem with the blast furnace method is that it consumes large amounts of carbonaceous material (30% coke) and flux (about 19% limestone).
以上のように、いずれの方法でも多量の脈石を含む鉱石
にニッケルと鉄をあわせて１２〜１８％）を全量処理し
ているために炭材、添加剤、そしてエネルギー源に大き
な費用を投じている。そこで簡単な予備処理によって、
鉱石中のニッケル、鉄を濃縮する方法が必要とされてい
る。As mentioned above, in either method, the entire amount of ore containing a large amount of gangue (including nickel and iron (12-18%)) is processed, resulting in large costs for carbon materials, additives, and energy sources. ing. Therefore, by simple preliminary processing,
A method is needed to concentrate nickel and iron in ore.
例えばニッケル鉱石の濃縮方法の１つとして還元−磁選
法が提案されている。この処理法では鉱石に還元剤とし
てコークスを５％、添加剤としてほう酸ナトリウムを５
％添加してペレットに造粒している。このペレットをロ
ータリーキルンで１３００℃で還元することによりＮｉ
を９９．５％、Ｆｅを９８．４％金属化でき、還元ペレ
ットを湿式磁選することでＮｉ品位９．５％、Ｆｅ品位
５４．８％ のＮｉとＦｅ濃化物をＮｉ回収率９９．１
％、Ｆｅ回収率９８．０％で得ている。For example, a reduction-magnetic separation method has been proposed as one of the methods for concentrating nickel ore. In this treatment method, 5% coke is added to the ore as a reducing agent, and 5% sodium borate is added as an additive.
% is added and granulated into pellets. By reducing this pellet at 1300°C in a rotary kiln, Ni
99.5% of Ni and 98.4% of Fe can be metallized, and by wet magnetic separation of the reduced pellets, Ni and Fe concentrates with a Ni grade of 9.5% and Fe grade of 54.8% can be converted to a Ni recovery rate of 99.1.
%, with an Fe recovery rate of 98.0%.
この処理法は還元によってメタル粒がペレット表面に大
きく成長するため選別しやすく、メタルの回収率が高い
という利点を有するが、添加剤として用いるほう酸ナト
リウムが高価であり、５％という添加量は多いというこ
とが欠点である。This treatment method has the advantage that the metal particles grow large on the pellet surface due to reduction, making it easy to sort and have a high metal recovery rate. However, the sodium borate used as an additive is expensive, and the amount of 5% added is high. That is a drawback.
この他にもいくつかの方法が考えられているものの、い
ずれも実用化には到ってはいない。その原因は酸化ニッ
ケル鉱石中のＮｉが少量であり、しかも珪酸塩中に極め
て微細に分散しているため物理的には選鉱が困難である
こと、還元する場合鉱石の融点近い（約１４００℃）高
温で処理するためエネルギー費が高くなること、などで
ある。Several other methods have been considered, but none have been put into practical use. The reason for this is that the Ni content in the nickel oxide ore is small and is extremely finely dispersed in the silicate, making it physically difficult to benefit the ore.When reduced, the temperature is close to the melting point of the ore (approximately 1400°C). Energy costs are high due to high temperature processing.
Claims (1)
、造粒し、これを還元処理後選別することによってニッ
ケルと鉄の濃化物を得ることからなる酸化ニッケル鉱石
の処理方法において：酸化ニッケル鉱石、還元剤、およ
び添加剤からなる混合物の組成が還元剤として炭材が３
〜１０重量％、添加剤としてほう酸ナトリウム、ほう酸
カルシウム、コレマナイトのうち１種または２種以上を
１〜３重量％、もしくはほう砂２〜６重量％、およびシ
リカをＭｇＯ／ＳｉＯ＿２重量比が０．３３〜０．５４
となる量を使用することを特徴とする酸化ニッケル鉱石
の処理方法。In a method for processing nickel oxide ore, which consists of mixing nickel oxide ore, a reducing agent, and an additive in a predetermined ratio, granulating it, and obtaining a concentrate of nickel and iron by sorting it after reduction treatment: Nickel oxide The composition of the mixture consisting of ore, reducing agent, and additives is such that carbonaceous material is used as reducing agent.
~10% by weight, 1~3% by weight of one or more of sodium borate, calcium borate, and colemanite as additives, or 2~6% by weight of borax, and silica at a MgO/SiO_2 weight ratio of 0. 33-0.54
A method for processing nickel oxide ore, characterized in that an amount of nickel oxide ore is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5189290A JP2945053B2 (en) | 1990-03-05 | 1990-03-05 | Nickel oxide ore processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5189290A JP2945053B2 (en) | 1990-03-05 | 1990-03-05 | Nickel oxide ore processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03253520A true JPH03253520A (en) | 1991-11-12 |
| JP2945053B2 JP2945053B2 (en) | 1999-09-06 |
Family
ID=12899536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5189290A Expired - Lifetime JP2945053B2 (en) | 1990-03-05 | 1990-03-05 | Nickel oxide ore processing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2945053B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010526936A (en) * | 2007-05-11 | 2010-08-05 | ポスコ | Method for producing molten iron containing nickel |
-
1990
- 1990-03-05 JP JP5189290A patent/JP2945053B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010526936A (en) * | 2007-05-11 | 2010-08-05 | ポスコ | Method for producing molten iron containing nickel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2945053B2 (en) | 1999-09-06 |
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