JPS62174338A - Refining method for copper - Google Patents
Refining method for copperInfo
- Publication number
- JPS62174338A JPS62174338A JP1538786A JP1538786A JPS62174338A JP S62174338 A JPS62174338 A JP S62174338A JP 1538786 A JP1538786 A JP 1538786A JP 1538786 A JP1538786 A JP 1538786A JP S62174338 A JPS62174338 A JP S62174338A
- Authority
- JP
- Japan
- Prior art keywords
- copper
- refining furnace
- refining
- blister
- magnetite
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000007670 refining Methods 0.000 title claims abstract description 49
- 239000010949 copper Substances 0.000 title claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 20
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 24
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 230000003647 oxidation Effects 0.000 claims abstract description 3
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 3
- 238000002844 melting Methods 0.000 claims abstract 2
- 230000008018 melting Effects 0.000 claims abstract 2
- 238000007664 blowing Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 18
- 239000002184 metal Substances 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract description 6
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 239000000155 melt Substances 0.000 abstract description 3
- 238000005188 flotation Methods 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、銅の精練方法に係り、特に精製炉内に堆積
するマグネタイトを除去して粗銅の生産効率を上げ、か
つ品位の高い銅を得ることのできる銅の精錬方法に関す
るものである。Detailed Description of the Invention "Industrial Application Field" This invention relates to a method for refining copper, and in particular, to improve the production efficiency of blister copper by removing magnetite deposited in a refining furnace, and to produce high-grade copper. It relates to a method of refining copper that can be obtained.
「従来の技術」
一般に、銅の精錬は、■銅鉱石の予備処理、■反射炉に
おける溶錬、■反射炉におけるかわとからみの分離、■
転炉における粗銅の製造（製鋼）、■精製炉における粗
銅の精製の各工程を経て行なわれる。"Conventional technology" Generally, copper refining consists of: ■ Pretreatment of copper ore, ■ Smelting in a reverberatory furnace, ■ Separation of glue and tangles in a reverberatory furnace, ■
It is carried out through the following steps: production of blister copper in a converter (steel manufacturing), and refining of blister copper in a refining furnace.
この工程中、■の転炉における粗銅の製造においては、
前工程で得られた金属溶体（■工程のかイつ）にまずケ
イ酸を添加しながら空気や酸素富化空気などの気体を吹
き込むことによって、その金属溶体中に含育されている
不純物を酸化して除去し、次いてケイ酸の添加を止めて
上記の気体の吹き込みだけを継続することによって、金
属溶体中に硫化物等として存在する銅の品位を上げるよ
うになっている。そして、このような精錬工程を経た金
属溶体は、粗銅として■の精製炉に送られ、ここでさら
にその品位を上げるようになっている。During this process, in the production of blister copper in the converter (■),
First, silicic acid is added to the metal solution obtained in the previous step (Part 1 of step 2), and by blowing gas such as air or oxygen-enriched air into the metal solution, impurities contained in the metal solution are oxidized. Then, by stopping the addition of silicic acid and continuing only the above-mentioned gas blowing, the quality of copper present as sulfide etc. in the metal solution is improved. The metal solution that has undergone such a refining process is sent as blister copper to the refining furnace (2), where its quality is further improved.
「発明が解決しようとする問題点」
ところが、このような銅の精錬方法にあっては、次のよ
うな問題点があった。``Problems to be solved by the invention'' However, this copper refining method had the following problems.
（１）すなわち、■の粗銅の製造工程において、金属溶
体中の鉄は、その一部が次式に示すように酸化されて酸
化鉄（Ｆ ｅｏ ）となり、これがさらに酸化されて難
溶融性のマグネタイト（Ｆ” ｅ、ｏ ４）となること
がある。(1) That is, in the manufacturing process of blister copper in (2), a part of the iron in the metal solution is oxidized to iron oxide (F eo ) as shown in the following formula, which is further oxidized to become a refractory iron oxide (F eo ). It may become magnetite (F”e, o 4).
３ＦｅＯ＋ １／２０！−＊Ｆｅ３Ｏ４このマグネタイ
トは、その大部分がからみとして除去されるものの、一
部がそのまま粗銅と共に次工程の精製炉に送られて精製
炉内で難溶融性炉塊（ベコ）として堆積して精製炉の内
容積などを狭めるため、粗銅の生産能力が低下し、よっ
て粗銅の生産効率をも低下させるなどの問題があった。3FeO+ 1/20! -*Fe3O4 Most of this magnetite is removed as entanglement, but some of it is sent as it is to the next refining furnace along with blister copper, where it is deposited as a refractory lump (beko) and refined. Since the internal volume of the furnace is narrowed, the production capacity of blister copper is reduced, and therefore the production efficiency of blister copper is also reduced.
〔２〕また、■の工程で発生するからみ中には、目的金
属の銅が硫化物や酸化物などとして、２〜３重量％程度
含有されており、このからみ中の銅が有効に利用される
必要があった。[2] In addition, the target metal copper is contained in the entanglement generated in the step (■) in the form of sulfides and oxides in an amount of about 2 to 3% by weight, and the copper in this entanglement cannot be used effectively. It was necessary to
「問題点を解決するための手段」
そこで、この発明は、からみ中から回収した硫化銅を粗
銅装入前の精製炉に装入して精製炉内に堆積するマグネ
タイトを溶解して除去するようにしたことにより、上記
の問題点を解決するようにした。``Means for Solving the Problems'' Therefore, the present invention aims to dissolve and remove the magnetite deposited in the refining furnace by charging the copper sulfide recovered from the entanglement into the refining furnace before charging the blister copper. By doing so, the above problems were resolved.
「作用 」
この発明の銅の精錬方法にあっては、粗銅の製造工程で
発生するからみ中から回収した硫化銅が精製炉内に堆積
するマグネタイトと接触して反応し、除去可能な酸化鉄
に分解する。この反応過程を反応式で示すと次式になる
。"Function" In the copper refining method of the present invention, copper sulfide recovered from the entanglements generated in the blister copper manufacturing process comes into contact with magnetite deposited in the refining furnace and reacts to form removable iron oxide. Disassemble. This reaction process is expressed by the following reaction formula.
Ｆｅ５Ｏ４＋ｌ／２ＣｕｔＳ→３ ＦｅＯ＋１／２ＳＯ
ｚ＋Ｃｕ「実施例」
以下、この発明の銅の精錬方法を詳しく説明する。Fe5O4+l/2CutS→3 FeO+1/2SO
z+Cu "Example" Hereinafter, the copper refining method of the present invention will be explained in detail.
この発明の銅の精錬方法は、転炉内で発生するからみ中
から回収した硫化銅を粗銅装入前の精製炉に装入するこ
とによって、精製炉内に堆積するマグネタイトを溶解し
て除去するものである。The copper refining method of this invention melts and removes magnetite deposited in the refining furnace by charging copper sulfide recovered from entanglements generated in the converter into the refining furnace before charging blister copper. It is something.
上記の転炉における粗銅の製造工程は、二つの工程に大
別される。すなわち、この工程は、前工程までに不純物
がある程度除去された金属溶体に対してケイ酸を添加し
、かつ金属溶体に空気や酸素富化空気などの気体を吹き
込むことによって金属溶体中の鉄を酸化し、その酸化鉄
とケイ酸とを結合させてからみとして除去する工程と、
主に鉄からなるからみが除去された金属溶体に気体の吹
き込みを継続したまま、金属溶体中に硫化物として溶融
されている銅の品位を向上させる工程とからなるもので
ある。そして、この粗銅の製造工程に必要な熱は、金属
溶体中の鉄やイオウなどの不純物が空気などによって酸
化された際に発生する酸化熱が利用され、その温度は、
金属溶体中の不純物の量やこの不純物を酸化するのに必
要な気体の吹き込みｍなどにより左右されるが、通常１
２００〜１３００℃程度の範囲とされる。The manufacturing process of blister copper in the converter described above is roughly divided into two processes. In other words, in this process, silicic acid is added to the metal solution from which some impurities have been removed in the previous process, and a gas such as air or oxygen-enriched air is blown into the metal solution to remove iron from the metal solution. A step of oxidizing and combining the iron oxide and silicic acid to remove it as entanglement,
This process consists of improving the quality of the copper melted as sulfide in the metal solution while continuing to blow gas into the metal solution from which entanglements mainly made of iron have been removed. The heat required for the manufacturing process of blister copper is the heat of oxidation generated when impurities such as iron and sulfur in the metal solution are oxidized by air, and the temperature is:
It depends on the amount of impurities in the metal solution and the amount of gas necessary to oxidize the impurities, but usually 1
The temperature range is approximately 200 to 1300°C.
このような工程で発生するからみ中から硫化銅を回収す
るには、からみを空冷し浮遊選鉱工程にかけて塊状の硫
化銅だけを選ぶようにする。そして、この塊状の硫化鋼
の粒径は、作業性やマグネタイトとの接触面積などを考
慮して決められ、通常２０〜１００ｍｍ程度の範囲とさ
れるが、これに限定されるものではない。In order to recover copper sulfide from the tangles generated in such a process, the tangles are air-cooled and subjected to a flotation process to select only the lumpy copper sulfide. The grain size of this lumpy sulfurized steel is determined in consideration of workability, contact area with magnetite, etc., and is usually in the range of about 20 to 100 mm, but is not limited to this.
上記硫化銅を粗銅装入前の精製炉に装入するのは、前バ
ッチの粗銅がその精製炉で精製された後に鋳造されてお
り、精製炉の底部にマグネタイトが炉塊として堆積して
いるからである。そのため、硫化銅を粗銅装入中あるい
は装入後の精製炉に装入すると、硫化銅がマグネタイト
と接触する而に空気酸化されて銅を放し亜硫酸ガスを発
生させてしまうため効率が悪くなる。The above copper sulfide is charged into the refining furnace before charging blister copper because the previous batch of blister copper is cast after being refined in the refining furnace, and magnetite is deposited as a furnace lump at the bottom of the refining furnace. It is from. Therefore, when copper sulfide is charged into a refining furnace during or after charging blister copper, the copper sulfide comes into contact with magnetite and is oxidized in the air, releasing copper and generating sulfur dioxide gas, resulting in poor efficiency.
精製炉内に装入した硫化鋼は、精製炉の底部に堆積して
いるマグネタイトと接触し、次式に示されろようにマグ
ネタイトを除去可能な酸化鉄に分解する。The sulfided steel charged into the refining furnace contacts the magnetite deposited at the bottom of the refining furnace and decomposes the magnetite into removable iron oxide as shown in the following equation.
Ｆ ｅ３ｏ 、＋ １／２Ｃｕ、Ｓ →３ Ｆ ｅｏ
＋ １／２Ｓ○２＋Ｃｕこのような硫化銅とマグネタイ
トとの接触によって、マグネタイトは、除去可能な酸化
鉄となり、精製炉内のドブとして除去され、また硫化銅
は、随酸等の原料となる亜硫酸ガスと粗銅に品位を高め
る遊離の銅とに分解される。このときの精製炉内の温度
は、硫化銅とマグネタイトとの反応速度を考慮して１１
５０〜１２００°Ｃ程度であることが望ましい。この硫
化鋼の精製炉への装入量は、精製炉内に堆積するマグネ
タイトの堆積量と当量程度以上とされる。F e3o , + 1/2Cu, S →3 F eo
+ 1/2 S○2 + Cu Through this contact between copper sulfide and magnetite, magnetite becomes removable iron oxide, which is removed as waste in the refining furnace, and copper sulfide becomes sulfite, which is a raw material for acid, etc. It is decomposed into gas and free copper which is refined into blister copper. At this time, the temperature inside the refining furnace was set at 11%, taking into account the reaction rate between copper sulfide and magnetite.
The temperature is preferably about 50 to 1200°C. The amount of this sulfurized steel charged into the refining furnace is approximately equal to or more than the amount of magnetite deposited in the refining furnace.
そして、このようなマグネタイトの除去操作後の精製炉
には、転炉で製造された溶融状の粗銅（品位が９８．９
〜９９．１％程度）が装入される。After such magnetite removal operation, the refining furnace is filled with molten blister copper (grade 98.9) produced in the converter.
~99.1%) is charged.
この粗銅は、精製炉内においてら空気や酸素富化空気な
どの気体により！２００〜１３００℃程度の高温にさら
される際に、粗銅中の不純物が酸化される。その後、こ
の粗銅は、重油やアンモニアなどにより還元され、続い
て鋳造されて電解精製用のアノードとなる。This blister copper is produced by gases such as air and oxygen-enriched air in the refining furnace! Impurities in blister copper are oxidized when exposed to high temperatures of about 200 to 1300°C. This blister copper is then reduced with heavy oil, ammonia, etc., and then cast to become an anode for electrolytic refining.
このようにして得られたアノードは、銅品位か９９．２
以上となり、品質が非常に優れたものとなる。The anode thus obtained has a copper grade of 99.2
As a result, the quality is extremely excellent.
以下、実験例を示してこの発明の作用効果を明確にする
。Hereinafter, the effects of this invention will be clarified by showing experimental examples.
（実験例）
ｌサイクル当たり３００トンの粗銅を製造する能力を有
する精製炉に、転炉から除去されたからみ中から回収し
た硫化銅６トンをｍ銅装入前に装入したところ、１３時
間後、精製炉の底部に堆積していたマグネタイト約３ト
ンを溶解することができた。このときの精製炉内の温度
は、約１２００℃であった。(Experiment example) When 6 tons of copper sulfide recovered from the entanglement removed from the converter was charged into a refining furnace having the capacity to produce 300 tons of blister copper per 1 cycle before charging m copper, the reaction time was 13 hours. Afterwards, we were able to melt approximately 3 tons of magnetite that had accumulated at the bottom of the refining furnace. The temperature inside the refining furnace at this time was about 1200°C.
「発明の効果」
以上説明したように、この発明の銅の精錬方法によれば
、銅の精製工程において精製炉内に難溶融性炉塊として
堆積するマグネタイトを溶解して除去することができ、
よって精製炉の粗銅生産能力を上げることができると共
に生産効率を著しく向上させることができる。"Effects of the Invention" As explained above, according to the copper refining method of the present invention, magnetite deposited as a refractory lump in the refining furnace during the copper refining process can be dissolved and removed.
Therefore, the blister copper production capacity of the refining furnace can be increased, and production efficiency can be significantly improved.
また、この方法によれば、転炉から発生するからみ中に
含有されていた塊状の硫化銅をマグネタイトの溶解に使
用したので、冷剤として転炉に繰り返していた硫化銅を
有効に利用することができ、さらに得られる粗銅中の銅
品位を高めることができる。In addition, according to this method, the lumpy copper sulfide contained in the tangles generated from the converter is used to melt magnetite, so the copper sulfide that was repeatedly used in the converter as a coolant can be effectively used. It is possible to further improve the copper quality in the obtained blister copper.
Claims (1)
からみとして酸化除去して得た粗銅をさらに精製炉で空
気酸化による精製を行ない、その銅品位を向上させるよ
うにした銅の精錬方法において、 上記からみ中から回収した硫化銅を粗銅装入前の精製炉
に装入することによって、上記精製炉内に堆積するマグ
ネタイトを溶解して除去するようにしたことを特徴とす
る銅の精錬方法。[Claims] The blister copper obtained by blowing air into the solution in the converter and oxidizing and removing impurities in the solution is further purified by air oxidation in a refining furnace to improve the copper quality. In the method for refining copper, the copper sulfide recovered from the tangles is charged into the refining furnace before charging the blister copper, thereby melting and removing the magnetite deposited in the refining furnace. A distinctive copper refining method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1538786A JPS62174338A (en) | 1986-01-27 | 1986-01-27 | Refining method for copper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1538786A JPS62174338A (en) | 1986-01-27 | 1986-01-27 | Refining method for copper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62174338A true JPS62174338A (en) | 1987-07-31 |
Family
ID=11887328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1538786A Pending JPS62174338A (en) | 1986-01-27 | 1986-01-27 | Refining method for copper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62174338A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5093762A (en) * | 1990-03-16 | 1992-03-03 | Nec Corporation | Electric double-layer capacitor |
| JP2002235125A (en) * | 2001-02-06 | 2002-08-23 | Mitsui Mining & Smelting Co Ltd | Method for melting copper in converter and copper matte damming-up device in converter |
| JP2012211381A (en) * | 2011-03-23 | 2012-11-01 | Jx Nippon Mining & Metals Corp | Method for removing deposit on furnace bottom in iron and tin-containing copper treatment furnace |
| CN108034819A (en) * | 2017-09-11 | 2018-05-15 | 江西新金叶实业有限公司 | A kind of method using oxygen-enriched smelting method extraction copper |
-
1986
- 1986-01-27 JP JP1538786A patent/JPS62174338A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5093762A (en) * | 1990-03-16 | 1992-03-03 | Nec Corporation | Electric double-layer capacitor |
| JP2002235125A (en) * | 2001-02-06 | 2002-08-23 | Mitsui Mining & Smelting Co Ltd | Method for melting copper in converter and copper matte damming-up device in converter |
| JP2012211381A (en) * | 2011-03-23 | 2012-11-01 | Jx Nippon Mining & Metals Corp | Method for removing deposit on furnace bottom in iron and tin-containing copper treatment furnace |
| CN108034819A (en) * | 2017-09-11 | 2018-05-15 | 江西新金叶实业有限公司 | A kind of method using oxygen-enriched smelting method extraction copper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2008337430B2 (en) | Method for refining copper concentrate | |
| US4489046A (en) | Method for working-up arsenic-containing waste | |
| CN106332549B (en) | Process for converting copper-containing materials | |
| CA2098521C (en) | Method for producing high-grade nickel matte and metallized sulfide matte | |
| CA2355443C (en) | Method of smelting copper sulfide concentrate | |
| JPS62174338A (en) | Refining method for copper | |
| JP3682166B2 (en) | Method for smelting copper sulfide concentrate | |
| US4344792A (en) | Reduction smelting process | |
| US4515631A (en) | Method for producing blister copper | |
| US3091524A (en) | Metallurgical process | |
| US1945074A (en) | Recovery of selenium | |
| FI73741C (en) | Process for continuous production of raw cups. | |
| EP0416738B1 (en) | Nickel-copper matte converters employing nitrogen enriched blast | |
| US3773494A (en) | Smelting of copper sulphide concentrates with ferrous sulphate | |
| US3032411A (en) | Metallurgical process | |
| JPS61531A (en) | Method for smelting copper sulfide ore | |
| RU2224034C1 (en) | Platinum metal extraction method | |
| JP3921511B2 (en) | Operation method of copper converter | |
| RU2169202C1 (en) | Method of continuous processing of copper concentrate into blister copper | |
| JP4274069B2 (en) | Reuse method of copper alloy and mat obtained by slag fuming method | |
| RU2354710C2 (en) | Method for complex reprocessing of metal iron concentrate, containing nonferrous and precious metals | |
| US692310A (en) | Method of treating copper ores. | |
| JPH09263850A (en) | Operation of copper smelting furnace | |
| KR100208063B1 (en) | Recovering method of copper inmolten metal | |
| JP4111126B2 (en) | Dob treatment method for non-ferrous smelting furnace |