JPH0450065B2 - - Google Patents
Info
- Publication number
- JPH0450065B2 JPH0450065B2 JP7724784A JP7724784A JPH0450065B2 JP H0450065 B2 JPH0450065 B2 JP H0450065B2 JP 7724784 A JP7724784 A JP 7724784A JP 7724784 A JP7724784 A JP 7724784A JP H0450065 B2 JPH0450065 B2 JP H0450065B2
- Authority
- JP
- Japan
- Prior art keywords
- ore
- zinc
- copper
- concentrate
- sulfide
- 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.)
- Expired
Links
- 239000012141 concentrate Substances 0.000 claims description 40
- 239000010949 copper Substances 0.000 claims description 38
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 35
- 229910052802 copper Inorganic materials 0.000 claims description 34
- 239000011701 zinc Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 32
- 229910052725 zinc Inorganic materials 0.000 claims description 31
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 30
- 238000005188 flotation Methods 0.000 claims description 26
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 18
- 239000011707 mineral Substances 0.000 claims description 18
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 12
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 12
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 12
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 11
- 239000005083 Zinc sulfide Substances 0.000 claims description 11
- 229910052569 sulfide mineral Inorganic materials 0.000 claims description 11
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 11
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 9
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 8
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 8
- 229960001763 zinc sulfate Drugs 0.000 claims description 8
- 229910001656 zinc mineral Inorganic materials 0.000 claims description 7
- 239000004088 foaming agent Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 229910001779 copper mineral Inorganic materials 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000010755 mineral Nutrition 0.000 description 16
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 11
- 238000000227 grinding Methods 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 238000005456 ore beneficiation Methods 0.000 description 5
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 description 4
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052683 pyrite Inorganic materials 0.000 description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 4
- 239000011028 pyrite Substances 0.000 description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- 229910052948 bornite Inorganic materials 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910052947 chalcocite Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 ethyl isopropyl Chemical group 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- HKDQPTUHUPLYTG-UHFFFAOYSA-N zinc iron(2+) disulfide Chemical compound [Fe+2].[S-2].[Zn+2].[S-2] HKDQPTUHUPLYTG-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
〔産業上の利用分野〕
本発明は銅、亜鉛、鉄等の硫化鉱物を含む複雑
硫化鉱石から、銅精鉱、亜鉛精鉱を浮選分離する
優先浮選法において、硫化銅鉱物を浮遊させなが
ら、硫化亜鉛鉱物と硫化鉄鉱物を選択的に抑制す
る方法の改良に関するものである。
〔従来の技術〕
従来、このような銅、亜鉛、鉄等の硫化鉱物を
含む複雑硫化鉱石中の硫化銅鉱物を浮遊させなが
ら硫化亜鉛鉱物と硫化鉄鉱物を選択的に抑制する
方法として、鉱液を石灰等によるPH調整後、青化
ソーダおよび硫酸亜鉛を添加する方法と、特公昭
37−15310号公報に示されるような硫化ソーダと
亜硫酸ガスを併用する方法があつた。
しかしこのうち前者の青化ソーダ、硫酸亜鉛を
使用する方法は選択的抑制効果が弱く、特に斑銅
鉱、輝銅鉱などの二次銅鉱物を含む場合には殆ん
ど抑制効果がない欠点があり、後者の硫化ソー
ダ、亜硫酸ガスを併用する方法は、硫化亜鉛鉱物
と硫化鉄鉱物の抑制程度が等しい欠点があり、従
つて後工程での亜鉛活性化時に硫化鉄鉱の一部も
活性化されて亜鉛精鉱の品位が低下することを防
ぐために例えば第１図に示すような工程が必要で
あつた。即ち、原鉱石を磨鉱してバルク浮選によ
り脈石鉱物を除去して得た銅、亜鉛、バルク精鉱
中に含有する硫化鉄を銅、亜鉛の分離に先立つて
前以つて除去する工程を必要としていた。この従
来法による浮選結果を第１表に示す。
[Industrial Application Field] The present invention is a preferential flotation method for flotation separating copper concentrate and zinc concentrate from complex sulfide ore containing sulfide minerals such as copper, zinc, and iron. However, the present invention relates to improvements in methods for selectively suppressing zinc sulfide minerals and iron sulfide minerals. [Prior Art] Conventionally, as a method for selectively suppressing zinc sulfide minerals and iron sulfide minerals while suspending copper sulfide minerals in complex sulfide ores containing sulfide minerals such as copper, zinc, and iron, A method of adding cyanide soda and zinc sulfate after adjusting the pH of the liquid with lime etc.
There was a method of using sodium sulfide and sulfur dioxide gas together, as shown in Japanese Patent No. 37-15310. However, the former method of using soda cyanide and zinc sulfate has a weak selective inhibitory effect, and has the disadvantage that it has almost no inhibitory effect, especially when it contains secondary copper minerals such as bornite and chalcocite. The latter method, in which sodium sulfide and sulfur dioxide gas are used in combination, has the disadvantage that the degree of suppression of zinc sulfide minerals and iron sulfide minerals is equal, and therefore some of the iron sulfide ore is activated during zinc activation in the subsequent process. In order to prevent the quality of zinc concentrate from deteriorating, a process as shown in FIG. 1, for example, was necessary. That is, a step in which copper, zinc, and iron sulfide contained in bulk concentrate obtained by grinding raw ore and removing gangue minerals by bulk flotation are removed prior to separation of copper and zinc. was needed. Table 1 shows the results of flotation using this conventional method.
この発明は上記の欠点を解消し、斑銅鉱、輝銅
鉱などの二次銅鉱物を含む場合にも効果的に、し
かも後工程での亜鉛活性時に硫化鉄鉱は容易に活
性化されず亜鉛鉱物のみ活性化されるように硫化
鉄鉱を亜鉛鉱物よりも一段強力に抑制して、前も
つて鉱亜鉛バルク精鉱中の硫化鉄鉱含有量を低下
させる工程の必要性を無くすることによつて、処
理工程を簡素化すると同時に銅亜鉛の損失を著し
く減少し、更に後工程で得られる亜鉛精鉱の品位
を上昇させることを目的とする。
〔問題点を解決するための手段〕
この目的を達成するために本発明は、銅、亜
鉛、鉄等の硫化鉱物を含む複雑硫化鉱石から銅精
鉱と亜鉛精鉱とを優先浮選分離する方法におい
て、磨鉱したままの原鉱と水からなる鉱液又はこ
の鉱液中の銅、亜鉛鉱物を総合優先浮選法で浮遊
させた銅、亜鉛硫化鉱の総合精鉱の鉱液の固体濃
度を45〜80重量％とし、硫化ソーダを鉱石トン当
り0.2〜３Kg添加してコンデイシヨニングした後、
硫酸亜鉛を前記硫化ソーダの1.5〜3.5倍量と、亜
硫酸ガスを鉱石トン当り1.5〜10Kg添加し、空気
を鉱石トン当り50m3以上吹込んでさらにコンデイ
シヨニングを行ない、次いで捕収剤、起泡剤等の
浮選試薬を添加して銅精鉱と亜鉛精鉱とを浮選分
離するようにしたものである。
本発明は銅、亜鉛、鉄等の硫化鉱物を含む複雑
硫化鉱石を磨鉱したものに直接本発明方法を適用
して硫化銅鉱を浮鉱とし、硫化亜鉛鉱、硫化鉄
鉱、脈石鉱物を沈鉱として分離し夫々精選を行な
つて銅精鉱、亜鉛精鉱を回収することもできる
し、又原鉱石を磨鉱し総合優先浮選法で脈石鉱物
を沈鉱として分離し銅、亜鉛鉱物、硫化鉄鉱の一
部を浮鉱として回収したものに本発明方法を適用
することもできる。
〔作 用〕
本発明において原鉱石を磨鉱したままの鉱液又
はこれに総合優先浮選を行なつて得た総合精鉱の
鉱液の固体重量濃度は45〜80％となるように調整
することが必要である。45重量％以下だとコンデ
イシヨニングの際使用する夫々の薬剤の添加の効
果が十分期待できない。また80重量％以上になる
とコンデイシヨニングの時に鉱粒の正常な懸濁状
態が維持できなくなる。
硫化ソーダの添加必要量は鉱物の組成、鉱石の
酸化程度によつても異なり、斑銅鉱のような二次
銅鉱物の含有割合が多い程、また酸化が進んでい
るもの程多く必要であり、鉱石トン当り0.2〜３
Kgの添加が必要である。
硫化ソーダを添加した後５分間以上コンデイシ
ヨニングして十分鉱石粒子と接触させる。次いで
加える硫酸亜鉛の量は先に添加した硫化ソーダに
対し重量で1.5〜3.5倍量が必要であり、1.5倍以下
だと硫化亜鉛鉱の抑制が悪くなり、3.5倍以上で
はもはやそれ以上の効果は望めない。同時に添加
する亜硫酸ガス量は鉱石トン当り1.5〜10Kgが必
要で、添加はガスの状態で吹込んでも良く、また
水に溶かして添加しても良い。添加必要量は鉱物
の組成等によつて異なるが、1.5Kg以下だと硫化
亜鉛鉱の抑制が悪くなり、10Kg以上になると硫化
銅鉱も抑制されてくるので好ましくない。コンデ
イシヨニングは空気を吹込みながら行なうことが
必要で、空気の吹込量は前記試薬の添加量によつ
ても異なるが、鉱石トン当り50m3以上が必要であ
るが、200m3以上としても効果はもはや上昇しな
い。コンデイシヨニングの時間は空気の供給量に
よつても支持されるが、必要空気量が供給できる
時間が必要である。
この空気吹込のコンデイシヨニングを行なつた
後通常のPH調節剤、捕収剤、起泡剤等の浮選試薬
を添加して硫化亜鉛鉱物と硫化鉄鉱物を抑制しな
がら硫化銅鉱物を浮遊させる選鉱を行ない、浮
鉱、沈鉱は更に必要な粗選、精選等を行なつて目
的とする銅精鉱、亜鉛精鉱を得ることができる。
〔実施例〕〔発明の効果〕
以下実施例について説明する。
実施例 １
この実施例に用いたカナダＡ鉱山産銅、亜鉛硫
化鉄鉱の化学分析値は、
Cu Zn Pb Ｓ Fe
1.66 2.23 0.06 31.26 27.21
SiO2 Al2O3 CaO MgO
12.8 3.75 1.78 3.85重量％
であり、本発明を適用した一例のフローシートを
第２図に示す。この鉱石中の銅分の約半分は斑銅
鉱、輝銅鉱として含まれており、従来の青化ソー
ダ、硫酸亜鉛法では亜鉛鉱物の抑制が不可能であ
る。更に硫化ソーダ、亜鉛酸ガス法では従来法と
して第１表に示した如く、23.42％Cuの銅精鉱が
52.57％の実収率で、50.35％Znの亜鉛精鉱が62.76
％の実収率で得られるのみにとどまり、銅実収
率、亜鉛実収率、亜鉛精鉱品位が低く不十分な選
鉱成績しか得られない。比較的選鉱の困難な鉱石
である。
本例では原鉱石を直接優先浮選法により処理し
た。先ず一次磨鉱工程で鉱石をボールミルにて−
44μm93％に湿式粉砕した後濃縮し、固体濃度60
重量％とした鉱液に、鉱石トン当り0.65Kgの硫化
ソーダを加えて10分間コンデイシヨニングし、次
いで鉱石トン当り1.1Kgの硫酸亜鉛（硫化ソーダ
の約1.7倍）と、鉱石トン当り亜硫酸ガス4.2Kgを
水溶液の形で添加しつつ、10m3／min・ｔの空気
を導入して10分間コンデイシヨニングを行なつ
た。その後消石灰でPH6.5に調節し、捕収剤とし
てエチルイソプロピルチオノカーバメイト（商品
名Ｚ−200ダウケミケル社製）と、起泡剤として
メチルイソブチルカービノル（以下MIBCと略
す）を添加して20分間銅浮選を行ない、浮鉱は二
次磨鉱後精選して銅精鉱とし、沈鉱と銅精選沈鉱
の一部は硫酸銅で亜鉛鉱物を活性浮遊させて精選
して亜鉛精鉱とし、沈鉱は尾鉱とした。
選鉱の成績を第２表に示す。
This invention solves the above-mentioned drawbacks, and is effective even when secondary copper minerals such as bornite and chalcocite are included. Moreover, pyrite is not easily activated during zinc activation in the subsequent process, and only zinc minerals are involved. treatment by suppressing the pyrite to a greater degree than the zinc mineral as it becomes activated, eliminating the need for a step that would previously reduce the pyrite content in the zinc bulk concentrate. The purpose is to simplify the process, significantly reduce copper-zinc loss, and further improve the quality of the zinc concentrate obtained in the subsequent process. [Means for solving the problem] In order to achieve this object, the present invention performs preferential flotation separation of copper concentrate and zinc concentrate from complex sulfide ore containing sulfide minerals such as copper, zinc, and iron. In the method, a mineral liquor consisting of raw ore as polished and water, or a mineral liquor solid of a comprehensive concentrate of copper and zinc sulfide ores in which copper and zinc minerals in this mineral liquor are suspended by a comprehensive preferential flotation method. After conditioning with a concentration of 45 to 80% by weight and addition of 0.2 to 3 kg of sodium sulfide per ton of ore,
Add zinc sulfate in an amount 1.5 to 3.5 times the amount of the above-mentioned sodium sulfide and 1.5 to 10 kg of sulfur dioxide gas per ton of ore, and further condition by blowing air at least 50 m3 per ton of ore. A flotation reagent such as a foaming agent is added to separate copper concentrate and zinc concentrate by flotation. The present invention directly applies the method of the present invention to polished complex sulfide ore containing sulfide minerals such as copper, zinc, iron, etc., converts the copper sulfide ore into floating ore, and precipitates zinc sulfide ore, iron sulfide ore, and gangue minerals. Copper concentrate and zinc concentrate can be recovered by separating the ore and screening them respectively, or by grinding the raw ore and separating the gangue mineral as precipitate using comprehensive preferential flotation method, copper and zinc can be recovered. The method of the present invention can also be applied to a part of the mineral, iron sulfide ore, which is recovered as floating ore. [Function] In the present invention, the solid weight concentration of the mineral liquor obtained by grinding the raw ore or the comprehensive concentrate obtained by subjecting it to comprehensive preferential flotation is adjusted to 45 to 80%. It is necessary to. If it is less than 45% by weight, the effects of adding each drug used during conditioning cannot be expected to be sufficient. Moreover, if the content exceeds 80% by weight, the normal suspension state of the ore grains cannot be maintained during conditioning. The amount of soda sulfide required to be added varies depending on the composition of the mineral and the degree of oxidation of the ore. 0.2-3 per ton of ore
Kg addition is required. After adding the sodium sulfide, condition it for at least 5 minutes to bring it into sufficient contact with the ore particles. The amount of zinc sulfate to be added next needs to be 1.5 to 3.5 times the amount of sodium sulfide added earlier by weight; if it is less than 1.5 times, the suppression of zinc sulfide ore will be poor, and if it is more than 3.5 times, it will no longer be as effective. I can't hope for that. The amount of sulfur dioxide gas added at the same time is required to be 1.5 to 10 kg per ton of ore, and it may be added in the form of a gas or dissolved in water. The amount required to be added varies depending on the composition of the mineral, etc., but if it is less than 1.5 kg, zinc sulfide ore will not be suppressed, and if it is more than 10 kg, copper sulfide ore will also be suppressed, which is not preferable. Conditioning must be carried out while blowing air, and the amount of air blown varies depending on the amount of the reagent added, but 50 m 3 or more is required per ton of ore, but even 200 m 3 or more is required. The effect no longer increases. The conditioning time is also supported by the amount of air supplied, but a time is required that allows the required amount of air to be supplied. After this air-blowing conditioning, ordinary flotation reagents such as PH regulators, collectors, and foaming agents are added to suppress zinc sulfide minerals and iron sulfide minerals while removing copper sulfide minerals. Floating ore beneficiation is performed, and the floating ore and settled ore are further subjected to necessary rough selection, fine selection, etc. to obtain the desired copper concentrate and zinc concentrate. [Example] [Effect of the invention] Examples will be described below. Example 1 The chemical analysis values of the copper and zinc sulfide pyrite from Canadian mine A used in this example are: Cu Zn Pb S Fe 1.66 2.23 0.06 31.26 27.21 SiO 2 Al 2 O 3 CaO MgO 12.8 3.75 1.78 3.85% by weight FIG. 2 shows an example flow sheet to which the present invention is applied. Approximately half of the copper content in this ore is contained as bornite and chalcocite, and it is impossible to suppress zinc minerals using the conventional soda cyanide and zinc sulfate methods. Furthermore, in the soda sulfide and zinc acid gas method, as shown in Table 1, 23.42% Cu copper concentrate is used as a conventional method.
62.76 Zinc concentrate with 50.35% Zn with actual yield of 52.57%
%, and the copper yield, zinc yield, and zinc concentrate grade are low, resulting in unsatisfactory ore beneficiation results. It is a relatively difficult ore to be processed. In this example, raw ore was processed by direct preferential flotation. First, in the primary grinding process, the ore is processed in a ball mill.
After wet grinding to 44 μm and 93%, it is concentrated to a solid concentration of 60
0.65Kg of sodium sulfide per ton of ore was added to the mineral liquor, and conditioned for 10 minutes, followed by 1.1Kg of zinc sulfate (approximately 1.7 times the amount of sodium sulfide) per ton of ore, and sulfite per ton of ore. Conditioning was performed for 10 minutes by introducing 10 m 3 /min·t of air while adding 4.2 kg of gas in the form of an aqueous solution. After that, the pH was adjusted to 6.5 with slaked lime, and ethyl isopropyl thionocarbamate (trade name Z-200 manufactured by Dow Chemikel) was added as a collecting agent and methyl isobutyl carbinol (hereinafter abbreviated as MIBC) was added as a foaming agent. Copper flotation is carried out for minutes, and the floating ore is refined after secondary grinding to become copper concentrate, and part of the settled ore and copper refined sediment is activated by flotation of zinc minerals with copper sulfate and refined to become zinc concentrate. The deposits were treated as tailings. The results of ore beneficiation are shown in Table 2.
【表】
第２表の結果から明らかなように本実施例によ
れば銅精鉱のCu品位24.76％で銅実収率82.71％、
亜鉛精鉱のZn品位56.84％で、亜鉛実収率78.43％
で、第１表に示すような従来法に比べて各精鉱の
品位も高く且つ実収率において格段の改善が認め
られる。
実施例 ２
実施例１とほぼ同じカナダＡ鉱山産の銅、亜鉛
硫化鉄鉱石を一次磨鉱して−74μm75％まで湿式
粉砕した後、消石灰でPH12に調節し、捕収剤とし
てエチルイソプロピルチオノカーバメイトと、起
泡剤としてMIBCを使用して優先浮選を行ない、
銅、亜鉛硫化鉱と一部の硫化鉄鉱の総合精鉱を浮
鉱とし、残部の硫化鉄と脈石を尾鉱とし、この総
合精鉱に本発明の工程を適用した。このフローシ
ートを第３図に示す。前記総合精鉱を−44μm80
％に二次磨鉱した後濃縮し、固体濃度60重量％と
した鉱液に、総合精鉱トン当り1.0Kgの硫化ソー
ダを加えて10分間コンデイシヨニングし、次いで
総合精鉱トン当り1.7Kgの硫酸亜鉛（硫化ソーダ
の1.7倍）と同トン当り亜硫酸ガス5.8Kgを水溶液
の形で添加しながら10m3／min・ｔの空気を導入
して10分間コンデイシヨニングを行なつた。その
後消石灰でPH6.5に調節し、捕収剤としてＺ−
200、起泡剤としてMIBCを添加して20分間銅浮
選を行ない、浮鉱は三次磨鉱後精選して銅精鉱と
し、沈鉱と銅精選沈鉱の一部は硫酸銅で亜鉛鉱物
を活性浮遊させて精選して亜鉛精鉱とし、沈鉱は
硫化鉄精鉱として得た。
選鉱の成績を第３表に示す。[Table] As is clear from the results in Table 2, according to this example, the Cu grade of the copper concentrate was 24.76%, the actual copper yield was 82.71%,
The Zn grade of zinc concentrate is 56.84%, and the actual zinc yield is 78.43%.
Compared to the conventional method as shown in Table 1, the quality of each concentrate is higher and the actual yield is significantly improved. Example 2 Copper and zinc sulfide iron ore from Canadian mine A, which is almost the same as Example 1, was subjected to primary grinding and wet-pulverized to -74 μm 75%, then adjusted to pH 12 with slaked lime, and ethyl isopropylthiono as a collector. preferential flotation using carbamate and MIBC as a foaming agent;
A composite concentrate of copper, zinc sulfide ore and some iron sulfide ore was used as floating ore, and the remaining iron sulfide and gangue were used as tailings, and the process of the present invention was applied to this composite concentrate. This flow sheet is shown in FIG. -44μm80
%, and then concentrated to a solid concentration of 60% by weight. 1.0 kg of sodium sulfide per ton of total concentrate was added to the mineral solution for 10 minutes, and then 1.7 kg per ton of total concentrate was added. Conditioning was carried out for 10 minutes by introducing air at a rate of 10 m 3 /min·t while adding 1 kg of zinc sulfate (1.7 times that of sodium sulfide) and 5.8 kg of sulfur dioxide gas per ton in the form of an aqueous solution. After that, the pH was adjusted to 6.5 with slaked lime, and Z-
200, copper flotation is carried out for 20 minutes by adding MIBC as a foaming agent, the floating ore is purified after tertiary grinding to become copper concentrate, and part of the settled ore and copper refined sediment are converted into zinc minerals with copper sulfate. Zinc concentrate was obtained by active flotation and selection, and the precipitate was obtained as iron sulfide concentrate. The results of ore beneficiation are shown in Table 3.
【表】
第３表の結果から判るように本実施例によれ
ば、Cu品位24.70％の銅精鉱が実収率約84％で、
Zn品位60.14％の亜鉛精鉱が実収率約82.34％で得
られ、品位においても従来法に比べて高く、実収
率においても極めて優れている。
以上説明したように、本発明による選鉱成績の
改善の結果は顕著で、得られた銅精鉱、亜鉛精鉱
の品位も優れ、しかも実収率においては従来法に
比して著しく向上し、経済的利益は大きなものが
ある。[Table] As can be seen from the results in Table 3, according to this example, copper concentrate with a Cu grade of 24.70% had an actual yield of about 84%.
Zinc concentrate with a Zn grade of 60.14% was obtained at an actual yield of approximately 82.34%, which is higher in grade than the conventional method and extremely superior in actual yield. As explained above, the improvement in ore beneficiation results achieved by the present invention is remarkable, the grades of the copper concentrate and zinc concentrate obtained are also excellent, and the actual yield is significantly improved compared to the conventional method, making it more economical. The benefits are huge.
第１図は従来法による複雑硫化鉱石の浮選工程
図、第２図は本発明法による複雑硫化鉱石の浮選
法の一実施例の工程図、第３図は本発明法による
複雑硫化鉱石の浮選法の他の実施例の工程図であ
る。
Figure 1 is a process diagram for flotation of complex sulfide ore according to the conventional method, Figure 2 is a process diagram for an example of the flotation method for complex sulfide ore according to the method of the present invention, and Figure 3 is a process diagram for flotation of complex sulfide ore according to the method of the present invention. FIG. 3 is a process diagram of another embodiment of the flotation method.
Claims (1)
石から銅精鉱と亜鉛精鉱とを優先浮選分離する方
法において、磨鉱したまゝの原鉱と水からなる鉱
液又はこの鉱液中の銅、亜鉛鉱物を総合優先浮選
法で浮選させた銅、亜鉛硫化鉱の総合精鉱の鉱液
の固体濃度を45〜80重量％とし、硫化ソーダを鉱
石トン当り0.2〜３Kg添加してコンデイシヨニン
グした後、硫酸亜鉛を前記硫化ソーダの1.5〜3.5
倍量と、亜硫酸ガスを鉱石トン当り1.5〜10Kg添
加し、空気を鉱石トン当り50m3以上吹込んで更に
コンデイシヨニングを行ない、次いで捕収剤、起
泡剤等の浮選試薬を添加して銅精鉱と亜鉛精鉱と
を浮選分離することを特徴とする複雑硫化鉱の優
先浮選法。1. In a method of preferential flotation separation of copper concentrate and zinc concentrate from complex sulfide ore containing sulfide minerals such as copper, zinc, iron, etc., a mineral solution consisting of as-polished raw ore and water or this ore is used. Copper and zinc minerals in the liquid are flotated using a comprehensive preferential flotation method.The solid concentration of the mineral liquid of a comprehensive concentrate of copper and zinc sulfide ores is set to 45 to 80% by weight, and the sodium sulfide is added to 0.2 to 3 kg per ton of ore. After adding and conditioning, zinc sulfate is added to 1.5 to 3.5 of the sodium sulfide.
Add 1.5 to 10 kg of sulfur dioxide gas per ton of ore, and further condition by blowing air at least 50 m 3 per ton of ore, and then add flotation reagents such as collectors and foaming agents. A preferential flotation method for complex sulfide ores, which is characterized by flotation separation of copper concentrate and zinc concentrate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7724784A JPS60220155A (en) | 1984-04-17 | 1984-04-17 | Differential flotation of complicated sulfide ore |
| CA000478781A CA1265876A (en) | 1984-04-17 | 1985-04-10 | Method of recovering copper and zinc concentrates from complex sulfide ores by differential flotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7724784A JPS60220155A (en) | 1984-04-17 | 1984-04-17 | Differential flotation of complicated sulfide ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60220155A JPS60220155A (en) | 1985-11-02 |
| JPH0450065B2 true JPH0450065B2 (en) | 1992-08-13 |
Family
ID=13628525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7724784A Granted JPS60220155A (en) | 1984-04-17 | 1984-04-17 | Differential flotation of complicated sulfide ore |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS60220155A (en) |
| CA (1) | CA1265876A (en) |
Cited By (1)
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|---|---|---|---|---|
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| AUPO788297A0 (en) * | 1997-07-14 | 1997-08-07 | Boc Gases Australia Limited | Recovery of pgm bearing minerals |
| AUPO788497A0 (en) * | 1997-07-14 | 1997-08-07 | Boc Gases Australia Limited | Method of improving the effectiveness of sulphoxy compounds in flotation circuits |
| RU2343987C1 (en) * | 2007-04-04 | 2009-01-20 | Совместное предприятие в форме закрытого акционерного общества "Изготовление, внедрение, сервис" | Method of floatation dressing of current tailings obtained by flushing of polymetallic or copper-zinc sulfide ores |
| RU2343986C1 (en) * | 2007-04-04 | 2009-01-20 | Совместное предприятие в форме закрытого акционерного общества "Изготовление, внедрение, сервис" | Method of floatation dressing of aged tailings of polymetallic or copper-zinc sulfide ores |
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-
1984
- 1984-04-17 JP JP7724784A patent/JPS60220155A/en active Granted
-
1985
- 1985-04-10 CA CA000478781A patent/CA1265876A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116060214A (en) * | 2022-12-21 | 2023-05-05 | 昆明理工大学 | A multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore |
| CN116060214B (en) * | 2022-12-21 | 2023-07-21 | 昆明理工大学 | A multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60220155A (en) | 1985-11-02 |
| CA1265876A (en) | 1990-02-13 |
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