JPH02111840A - Treatment for nickel oxide ore - Google Patents
Treatment for nickel oxide oreInfo
- Publication number
- JPH02111840A JPH02111840A JP26154688A JP26154688A JPH02111840A JP H02111840 A JPH02111840 A JP H02111840A JP 26154688 A JP26154688 A JP 26154688A JP 26154688 A JP26154688 A JP 26154688A JP H02111840 A JPH02111840 A JP H02111840A
- Authority
- JP
- Japan
- Prior art keywords
- carbon material
- nickel oxide
- additive
- sodium carbonate
- materials
- 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
- 229910000480 nickel oxide Inorganic materials 0.000 title claims abstract description 18
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 32
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 22
- 239000000654 additive Substances 0.000 claims abstract description 18
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 238000005188 flotation Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000008188 pellet Substances 0.000 abstract description 16
- 238000011084 recovery Methods 0.000 abstract description 15
- 238000007885 magnetic separation Methods 0.000 abstract description 14
- 238000001035 drying Methods 0.000 abstract description 4
- 239000002801 charged material Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 description 11
- 239000002923 metal particle Substances 0.000 description 10
- 229910000863 Ferronickel Inorganic materials 0.000 description 5
- 238000001465 metallisation Methods 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 239000006148 magnetic separator Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000012320 chlorinating reagent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000004907 flux Effects 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
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005456 ore beneficiation Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は酸化ニッケル鉱石の処理法に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for processing nickel oxide ore.
（従来技術とその問題点）
現在フェロニッケルの製造には主としてガーニエライト
等酸化ニッケル鉱石が原料として使われている。酸化ニ
ッケル鉱石のＮｉ含有量は２％程度と低く、かつＮｉが
１μ程度に微細に分散しているため酸化ニッケル鉱石は
選鉱が難しいと言われている。したがって従来はＮ１鉱
石を脈石ごと電気・炉で溶解し、フェロニッケルを得る
方法（キルン−電気炉法）、あるいはＮ１鉱石を粉砕し
、炭材とＣａＯおよびＳｉＯ□の副原料を混合、混；凍
役団鉱として乾燥し、ロータリーキルンで還元、粉砕、
篩分け、比重選別、磁力選別の操作によりフェロニッケ
ルを得る方法（クルップレン法）が主として行なわれて
きた。上記のキルン−電気炉法、クルップレン法による
フェロニッケル製造方法では、５敲に含まれる脈石成分
ごとＮｌ鉱石を処理し、フェロニッケルを得ているため
多量のエネルギーあるいは添加剤が必要であるという問
題がある。よって簡単な予備処理により脈石成分を取り
除き、Ｎ１を濃縮する方法が望まれている。(Prior art and its problems) Currently, nickel oxide ores such as garnierite are mainly used as raw materials for the production of ferronickel. The Ni content of nickel oxide ore is as low as about 2%, and Ni is finely dispersed to a size of about 1 μm, so nickel oxide ore is said to be difficult to concentrate. Therefore, conventionally, N1 ore is melted together with gangue in an electric furnace to obtain ferronickel (kiln-electric furnace method), or N1 ore is crushed and mixed with carbonaceous material and auxiliary raw materials of CaO and SiO□. ; Dried as frozen briquette, reduced in a rotary kiln, crushed,
The main method used has been to obtain ferronickel by sieving, specific gravity sorting, and magnetic force sorting (Kruppren method). In the kiln-electric furnace method and Krupplen method mentioned above, the ferronickel production method requires a large amount of energy or additives because ferronickel is obtained by processing the Nl ore together with the gangue components contained in the 5. There's a problem. Therefore, a method for removing gangue components and concentrating N1 through simple pretreatment is desired.
Ｎ１鉱石の予備処理法としては（１）単純な物理的選鉱
法、（２）セグリゲーションー焙焼法、（３）還元−磁
選法の３種があり、それらに関して多くの提案がある。There are three types of pretreatment methods for N1 ore: (1) simple physical beneficiation, (2) segregation-roasting, and (3) reduction-magnetic separation, and there are many proposals regarding these methods.
しかしいずれの方法も実用化に至ってはいないのが現状
である。その原因として（１）の場合は酸化ニッケル鉱
石中のＮｉが珪酸塩中に極めて微細（１μ以下）に分散
して存在しているため。However, the current situation is that none of these methods has been put into practical use. The reason for this is that in the case of (1), Ni in the nickel oxide ore is dispersed in extremely fine particles (1 μm or less) in the silicate.
一部の鉱石を除いて選別粉砕、比重選鉱、磁力選鉱、浮
遊選鉱等の単純な選鉱法ではＮ１の濃縮は不可能である
。With the exception of some ores, it is impossible to concentrate N1 by simple beneficiation methods such as selective crushing, gravity beneficiation, magnetic beneficiation, ore flotation.
（２）のセグリゲーションー焙焼法では、塩素化剤を大
量に添加するため１発生するＨＣＩの回収や塩素化剤の
再生にコストがかかる点と雰囲気の制御が難しい点にお
いて問題がある。The segregation-roast method (2) has problems in that a large amount of chlorinating agent is added, so it is costly to recover the generated HCI and regenerate the chlorinating agent, and it is difficult to control the atmosphere.
（３）の還元−磁選法では、還元析出した金属粒子の８
１粒化が不完全であること、および鉱石の融点に近い高
温（１４００℃程度）で処理することによりエネルギー
費が高くなる等の問題点がある。In the reduction-magnetic separation method (3), 8 of the reduced and precipitated metal particles are
There are problems such as incomplete granulation and high energy costs due to processing at a high temperature (approximately 1400° C.) close to the melting point of the ore.
（問題解決に関する知見）
本発明は、酸化ニッケル鉱石と、炭材および添加剤の粉
砕材料を所定量づつ配合し還元処理し、還元された材料
を選別（磁力選鉱または浮遊選ｖ：）してＮ１とＦｅを
回収することからなる酸化ニッケル鉱石の処理方法にお
いて、少量の添加剤および還元剤を用い、比較的低温度
でＮ１鉱石を処理し従来達成できなかった高いＮ１およ
びＦｅ回収率を得るＮｉ鉱石予備処理方法を得ることを
課題とする。課題解決に関し、添加剤として炭酸ナトリ
ウムを１から１０％、還元剤として炭材を２．５から１
５％添加することにより、添加剤と炭材の使用量が従来
のＮｉ、農縮法に比べ少量で、ロータリーキルンての処
理温度がこれまでの還元−磁選法の１４００ ’Ｃ程度
に比べて９００〜１３５０℃と低温で処理でき、さらに
〜１のみならずＦｅの回収率も９５％程度とＮ１とＦｅ
を同時にｒ、Ｑ ＊ Ｆきる等、従来法に比較して安価
にＮ１鉱石の予備処理が可能となることを知見した。(Knowledge related to problem solving) The present invention combines predetermined amounts of nickel oxide ore, pulverized materials of carbonaceous material and additives, performs reduction treatment, and sorts the reduced materials (magnetic ore separation or flotation v:). In a method for processing nickel oxide ore that involves recovering N1 and Fe, a small amount of additives and reducing agents are used to process N1 ore at relatively low temperatures to obtain high N1 and Fe recovery rates that were previously unattainable. The objective is to obtain a method for pre-processing Ni ore. To solve the problem, use 1 to 10% sodium carbonate as an additive and 2.5 to 1% carbon material as a reducing agent.
By adding 5% of Ni, the amount of additives and carbonaceous materials used is smaller than that of the conventional Ni and agricultural shrinkage methods, and the processing temperature in the rotary kiln is 900°C compared to the 1400'C of the conventional reduction-magnetic separation method. It can be processed at a low temperature of ~1350°C, and the recovery rate of not only ~1 but also Fe is around 95%, making it possible to process N1 and Fe.
It has been found that it is possible to pre-process N1 ore at a lower cost than conventional methods, such as by simultaneously cutting r and Q*F.
（発明の構成）
本発明は酸化ニッケル鉱石と炭材および添加剤の粉砕材
料を所定量づつ配合し還元処理を行ない、還元された材
料をｊｇ別（磁力選鉱または、′７遊選鉱）してゝｊ１
と！′：ｅを回収することからなる酸化ニッケル鉱石の
処理方法において：添加剤として、炭酸す１−リウムを
１から１０％、還元材として炭材を２．５から１５％添
加することを特ｉ″！！ｌとする酸化ニッケル鉱石の処
理方法を提供する。(Structure of the Invention) The present invention involves blending predetermined amounts of pulverized materials such as nickel oxide ore, carbonaceous material, and additives, performing a reduction treatment, and separating the reduced materials into JG types (magnetic ore beneficiation or '7 reticulation).ゝj1
and! ': In the method for treating nickel oxide ore, which consists of recovering Provides a method for processing nickel oxide ore to produce nickel oxide ore.
本発明の方法が適用される酸化ニッケル鉱とは具体的に
はけい酸苦土ニッケル鉱石、ラテライ）へ鉱石等である
。Specifically, the nickel oxide ore to which the method of the present invention is applied is magnesium silicate nickel ore, laterai ore, and the like.
本発明の方法において使用きれる炭材とは具体的には、
コークス、石炭等である。Specifically, the carbonaceous materials that can be used in the method of the present invention include:
These include coke and coal.
本発明の方法において使用される添加剤とはフラツクス
であって、従来技術では例えばＣａＯである。The additive used in the method of the invention is a flux, which in the prior art is, for example, CaO.
本発明は少量の添加剤および還元剤（炭材）を用い、比
較的低温度でＮｉ鉱石を処理し、従来達成できなかった
高いＮｉおよびＦｅ回収率を得るＮｉ鉱石の予備処理方
法である。The present invention is a method for pre-processing Ni ore, which uses small amounts of additives and reducing agents (charcoal materials) and processes Ni ore at relatively low temperatures, thereby obtaining high recovery rates of Ni and Fe that have not been achieved in the past.
耐化ニッケル鉱石、還元剤である炭材および炭酸ナトリ
ウムの添加剤をそれぞれ８０メツシュ程度に粉砕する。The hardened nickel ore, the carbonaceous material as a reducing agent, and the sodium carbonate additive are each crushed to about 80 mesh.
その手段としてはショークラッシャボールミル等の粉砕
機を用いそれぞれ粉砕を行なう。As a means for this purpose, pulverization is performed using a pulverizer such as a show crusher ball mill.
上記の粉砕材料は所定量づつ配合して混合し、好ましく
は造粒し希望する大きさのペレットに成形する。即ち、
粉砕したＮ１鉱石、炭材、添加剤を、昆合機を用いて所
定の割合に混合する。この混合物に水分およびバインダ
ーを添加しペレタイザーにより希望の大きさのペレット
を調製し、約１］０°Ｃ程度に加熱できる乾燥炉あるい
は流動く・Ｚ煙灰等により乾燥する。The above-mentioned pulverized materials are blended in predetermined amounts and mixed, preferably granulated and formed into pellets of a desired size. That is,
The crushed N1 ore, carbon material, and additives are mixed in a predetermined ratio using a mixing machine. Moisture and a binder are added to this mixture, pellets of a desired size are prepared using a pelletizer, and the pellets are dried in a drying oven that can be heated to about 10° C. or in a drying oven or a drying furnace or the like.
乾燥したペレットを例えばロータリーキルンに装入し９
００〜１３５０℃の非酸化性雰囲気中で装入原料内のＮ
ｉおよびＦｅをほぼ完全に還元する。For example, the dried pellets are charged into a rotary kiln9.
N in the charging material in a non-oxidizing atmosphere at 00-1350℃
i and Fe are almost completely reduced.
磁選工程あるいは１１選工程では還元したペレット中の
金属成分を脈石成分から分離する。その手段としては、
還元したペレットを粉砕し、湿式あるいは乾式磁選機に
より磁着物と非磁着物に分雛する。またはｌｌ遊選鉱に
よりＮ〕およびＦｅを脈石より分離することができる。In the magnetic separation step or 11 selection step, the metal components in the reduced pellets are separated from the gangue components. As a means of doing so,
The reduced pellets are crushed and separated into magnetic and non-magnetic materials using a wet or dry magnetic separator. Alternatively, N] and Fe can be separated from the gangue by free-flux treatment.
以上の諸工程それ自身は既知である。The above steps themselves are known.
前記混合造粒工程において、添加剤として炭酸ナトリウ
ムを１から１０％、還元剤として炭材を２．５から１５
％添加する。炭酸ナトリウムを１から１０％添加するこ
とにより炭酸すｌ・リウム無添加の場合と比較してＮ１
およびＦｅの金属化率は著しく高くなり、はぼ１００％
となる。また生成する金属粒子も大きく成長し数０１１
１の金属粒子となる場合もある。In the mixing granulation step, 1 to 10% of sodium carbonate as an additive and 2.5 to 15% of carbon material as a reducing agent.
%Added. By adding 1 to 10% of sodium carbonate, the N1
And the metallization rate of Fe is significantly high, almost 100%.
becomes. In addition, the metal particles generated also grow large and number 011.
In some cases, the metal particles become No. 1 metal particles.
このことにより金属粒子と脈石の分離が容易となり磁選
あるいは浮選によりＮｌおよびＦｅをほぼ１００％回収
できる利点がある。This has the advantage that metal particles and gangue can be easily separated and almost 100% of Nl and Fe can be recovered by magnetic separation or flotation.
炭酸ナトリウム１％未満ではλ１】およびＦｅの金属化
率は急激に減少し、かつ金属粒子も大きく成長しないた
め磁選あるいは４選でのＮ１およびＦｅ回収率が低下し
好ましくない。また炭酸ナトリウム添加量が１０％を越
えるとペレットの融点が下がり前記還元工程においてロ
ータリーキルン内でペレットか溶融し炉壁に付着するた
め操業に支障がある。If sodium carbonate is less than 1%, the metallization rate of λ1] and Fe sharply decreases, and the metal particles do not grow large, so the recovery rate of N1 and Fe in magnetic separation or 4-selection decreases, which is undesirable. Furthermore, if the amount of sodium carbonate added exceeds 10%, the melting point of the pellets decreases and the pellets melt in the rotary kiln during the reduction step and adhere to the furnace wall, which poses a problem in operation.
かつ１０％以上の炭酸ナトリウムの添加は従来法と比較
しコスト高になる。Moreover, addition of 10% or more of sodium carbonate results in higher costs compared to conventional methods.
一方炭材添加量が２．５％未満では、前記還元工程で′
Ｉ！１およびＦｅを完全に還元できない。また炭材が１
５％以上では炭材の残留量が多くなり、また炭材から入
る硫黄量が増加する間届点がある。On the other hand, if the amount of carbon material added is less than 2.5%,
I! 1 and Fe cannot be completely reduced. Also, the carbon material is 1
If it exceeds 5%, the amount of carbonaceous material remaining will increase, and the amount of sulfur entering from the carbonaceous material will reach a certain point.
以上の工程により、Ｎｉ鉱石の高品位化を少量の炭酸ナ
トリウムおよび炭材を添加することにより達成できた。Through the above steps, it was possible to improve the quality of Ni ore by adding a small amount of sodium carbonate and carbonaceous material.
炭酸ナトリウムを添加することに上り処理温度も９００
〜１３５０℃と従来の還元−磁選法の１４００°Ｃと比
べてかなり低くでき、還元反応、金属粒子の粗粒化を促
進する効果がある。Due to the addition of sodium carbonate, the processing temperature is also 900℃.
~1350°C, which can be considerably lower than the 1400°C of the conventional reduction-magnetic separation method, and has the effect of promoting the reduction reaction and coarsening of metal particles.
（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 原料として用いたＮ ｉ＊石の成分を第１表に示す。Example Table 1 shows the components of the Ni* stone used as a raw material.
第１表代表的なＮ１鉱石のがシ分（重量％）また炭材と
して用いたコークス粉の成分を第２表に示す。Table 1 Table 2 shows the content (wt%) of typical N1 ores and the components of coke powder used as carbon material.
原料Ｎｉ鉱石を１００メツシユ以下に粉砕し、これに同
じ＜１００メツシユ以下に粉砕したコークス粉および炭
酸ナトリウム（ソーダ灰）をそれぞれ５％づつ配合する
。少量の水と／＜インダーを添加し直径ｌＯ〜２０ ｍ
ｍ程度のペレツｌ−に造粒する。このペレッ１〜を１
２５０°Ｃに保持したロータリーキルンで力ｌ熱し、Ｎ
ｉおよびＦｅを還元した。この時のＮｉおよびＦｅの金
属化率はそれぞれ９９゜５．９５．１％であった。Raw material Ni ore is crushed to 100 mesh or less, and 5% each of coke powder and sodium carbonate (soda ash), which are also crushed to <100 mesh, are added. Add a small amount of water and/<inder to a diameter of lO~20 m.
Granulate into pellets of about m size. 1~1 of these pellets
Heat in a rotary kiln maintained at 250°C, and
i and Fe were reduced. The metallization rates of Ni and Fe at this time were 99°5.95.1%, respectively.
またこの時最大長５０ ｍ ｍ程度の金属粒子カニ ｌ
’、成された。還元したペレットを乾式粉砕後、乾式磁
選して、数Ｉｌｌ Ｉｎ以上に成長した金属粒子を分離
回収する。At this time, metal particle crabs with a maximum length of about 50 mm
', it was done. The reduced pellets are dry-pulverized and then subjected to dry magnetic separation to separate and recover metal particles that have grown to a size of several Ill In or more.
さらに乾式磁選の際の非磁着物を振動ミルにより湿式粉
砕した後、湿式ＰＪＡ選懺により磁選を行ないさらに＼
・１とＦｅの回収を完全にした。この結果乾式磁選と湿
式磁選の磁着物を合わせた回収物中の平均Ｎ１品位１０
．２％、平均Ｆｅ品位６０．１％となった。二の時のＮ
１回収は、９９．１％、Ｆｅ圓収宰９４．５％であった
。Furthermore, after wet-pulverizing the non-magnetic material during dry magnetic separation using a vibrating mill, magnetic separation is performed using wet PJA separation.
・Complete recovery of 1 and Fe. As a result, the average N1 grade of the collected materials, which was a combination of the magnetic materials from dry magnetic separation and wet magnetic separation, was 10.
．． 2%, and the average Fe grade was 60.1%. Second time N
1 recovery was 99.1%, and Fe round recovery was 94.5%.
比咬例
Ｎｉｌｉ石および還元剤のコークスを実施例と同一のも
のを用い、添加剤としてＣ，］０を添加した。＼」鉱石
、コークス、ＣａＯをそれぞれ１００メツシユ以下に粉
砕する。ＣａＯを７％添加し、コークスを１４％ｉｎ加
し、少量の水とバインダーをこの混合段に加え、直径１
０〜２０ ｍ ｍのペレットに造粒する。このペレット
を１２５０°Ｃに保持したロータリーキルン中て加熱処
理を行なった。この時のＮｉの金属化率は５４．８％Ｆ
ｃの金属化率は４２．９％であった。また、金属粒子は
最大でも１ｍｍ以下であった。得られた還元ベレットを
振動ミルで湿式粉砕した後、湿式磁選機により磁選を行
なった。この結果磁着物中のＮｉ品位は５．２％、 Ｆ
ｅ品位は３０．９％となった。この時のＮｉ回収率は７
５．８％、 Ｆｅ回収率は７０．５％であった。The same Nili stone and coke as a reducing agent were used as in the example, and C,]0 was added as an additive. \”Crush ore, coke, and CaO to 100 mesh or less each. Add 7% of CaO, add 14% of coke, add a small amount of water and binder to this mixing stage,
Granulate into 0-20 mm pellets. The pellets were heat-treated in a rotary kiln maintained at 1250°C. At this time, the Ni metallization rate was 54.8%F
The metallization rate of c was 42.9%. Moreover, the metal particles were 1 mm or less at maximum. The obtained reduced pellet was wet-pulverized using a vibrating mill, and then subjected to magnetic separation using a wet-type magnetic separator. As a result, the Ni grade in the magnetized material was 5.2%, F
The e-quality was 30.9%. The Ni recovery rate at this time was 7
The Fe recovery rate was 70.5%.
本発明の実施例および比ｉｋｘ例より、磁選物中のＮｊ
およびＦｅ含有量とそれぞれの回収率を第３表に示す。From the examples of the present invention and comparative examples, it is clear that Nj in the magnetic separator
Table 3 shows the Fe contents and respective recovery rates.
実施例ではＮｉ含有量１０．２％、Ｆｅ含有量６０．１
％と高く、さらにＮ１およびＦｅ回収率はほぼ１００％
であり、Ｎ１およびＦｅを効率的に濃縮できる二とが明
らかである。一方比較例ではＮｉおよびＦｅの品位はそ
れぞれ５．２％、３０．９％と低く、Ｎｉ、 Ｆｅ回収
率も７０％台に留まっている。In the example, the Ni content was 10.2% and the Fe content was 60.1%.
%, and the N1 and Fe recovery rates are almost 100%.
It is clear that N1 and Fe can be efficiently concentrated. On the other hand, in the comparative example, the quality of Ni and Fe is low at 5.2% and 30.9%, respectively, and the Ni and Fe recovery rates also remain in the 70% range.
第３表 磁選物のＮ１およびＦｅ品位と回収率ロータリ
ーキルンでの処理温度がこれまでの還元−磁選法による
ａ縮法に比へて低温である。またＮｉのみならずＦｅの
回収率も９５％程度とＮ１とＦｅを同時に１縮できる等
の特徴をもち、従来法に比較して安価にＮｌ鉱石の予備
処理が可能となる。よって本発明は経済的な効果が大き
い。Table 3 N1 and Fe grade and recovery rate of magnetic separator The processing temperature in the rotary kiln is lower than that of the conventional reduction-magnetic a reduction method. In addition, the recovery rate of not only Ni but also Fe is about 95%, and N1 and Fe can be reduced by 1 at the same time, making it possible to pre-process Nl ore at a lower cost than conventional methods. Therefore, the present invention has great economic effects.
Claims (1)
所定量づつ配合し還元処理し、還元された材料を選別（
磁力選鉱または浮遊選鉱）してＮｉとＦｅを回収するこ
とからなる酸化ニッケル鉱石の処理方法において：添加
剤として炭酸ナトリウムを１から１０％、還元剤として
炭材を２．５から１５％添加することを特徴とする酸化
ニッケル鉱石の処理方法。1. Blend predetermined amounts of pulverized materials such as nickel oxide ore, carbonaceous material, and additives, perform reduction treatment, and sort the reduced materials (
In a method for processing nickel oxide ores, which consists of recovering Ni and Fe by magnetic beneficiation or flotation: adding 1 to 10% of sodium carbonate as an additive and 2.5 to 15% of carbonaceous material as a reducing agent. A method for processing nickel oxide ore, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26154688A JPH02111840A (en) | 1988-10-19 | 1988-10-19 | Treatment for nickel oxide ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26154688A JPH02111840A (en) | 1988-10-19 | 1988-10-19 | Treatment for nickel oxide ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02111840A true JPH02111840A (en) | 1990-04-24 |
Family
ID=17363400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26154688A Pending JPH02111840A (en) | 1988-10-19 | 1988-10-19 | Treatment for nickel oxide ore |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02111840A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009209411A (en) * | 2008-03-04 | 2009-09-17 | Nippon Yakin Kogyo Co Ltd | Method for reducing valuable metal raw material |
| JP2013224493A (en) * | 2013-06-18 | 2013-10-31 | Nippon Yakin Kogyo Co Ltd | Reducing method for valuable metal raw material |
| WO2016009828A1 (en) * | 2014-07-15 | 2016-01-21 | 住友金属鉱山株式会社 | Method for producing pellet and method for smelting nickel oxide ore |
| WO2016017347A1 (en) * | 2014-08-01 | 2016-02-04 | 住友金属鉱山株式会社 | Method for smelting nickel oxide ore |
-
1988
- 1988-10-19 JP JP26154688A patent/JPH02111840A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009209411A (en) * | 2008-03-04 | 2009-09-17 | Nippon Yakin Kogyo Co Ltd | Method for reducing valuable metal raw material |
| JP2013224493A (en) * | 2013-06-18 | 2013-10-31 | Nippon Yakin Kogyo Co Ltd | Reducing method for valuable metal raw material |
| WO2016009828A1 (en) * | 2014-07-15 | 2016-01-21 | 住友金属鉱山株式会社 | Method for producing pellet and method for smelting nickel oxide ore |
| JP2016020533A (en) * | 2014-07-15 | 2016-02-04 | 住友金属鉱山株式会社 | Manufacturing method of pellet, and smelting method of nickel oxide ore |
| AU2015290857B2 (en) * | 2014-07-15 | 2017-07-13 | Sumitomo Metal Mining Co., Ltd. | Method for producing pellet and method for smelting nickel oxide ore |
| US10323297B2 (en) | 2014-07-15 | 2019-06-18 | Sumitomo Metal Mining Co., Ltd. | Method for producing pellet and method for smelting nickel oxide ore |
| WO2016017347A1 (en) * | 2014-08-01 | 2016-02-04 | 住友金属鉱山株式会社 | Method for smelting nickel oxide ore |
| JP5858105B1 (en) * | 2014-08-01 | 2016-02-10 | 住友金属鉱山株式会社 | Nickel oxide ore smelting method |
| CN106661668A (en) * | 2014-08-01 | 2017-05-10 | 住友金属矿山株式会社 | Method for smelting nickel oxide ore |
| AU2015297792B2 (en) * | 2014-08-01 | 2017-08-03 | Sumitomo Metal Mining Co., Ltd. | Method for smelting nickel oxide ore |
| US10041144B2 (en) | 2014-08-01 | 2018-08-07 | Sumitomo Metal Mining Co., Ltd. | Method for smelting nickel oxide ore |
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