CN107779595B - 一种低冰镍湿法处理直接分离镍铜的方法 - Google Patents
一种低冰镍湿法处理直接分离镍铜的方法 Download PDFInfo
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- CN107779595B CN107779595B CN201710996091.2A CN201710996091A CN107779595B CN 107779595 B CN107779595 B CN 107779595B CN 201710996091 A CN201710996091 A CN 201710996091A CN 107779595 B CN107779595 B CN 107779595B
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- Prior art keywords
- nickel
- cobalt
- sections
- leaching
- low
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- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 67
- 239000010950 nickel Substances 0.000 title claims abstract description 67
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000000956 alloys Substances 0.000 title claims abstract description 24
- 229910045601 alloys Inorganic materials 0.000 title claims abstract description 24
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000000034 methods Methods 0.000 claims abstract description 75
- 238000002386 leaching Methods 0.000 claims abstract description 56
- 229910052803 cobalt Inorganic materials 0.000 claims abstract description 34
- 239000010941 cobalt Substances 0.000 claims abstract description 34
- 238000001556 precipitation Methods 0.000 claims abstract description 27
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000007788 liquids Substances 0.000 claims abstract description 20
- KAEHZLZKAKBMJB-UHFFFAOYSA-N cobalt;sulfanylidenenickel Chemical compound 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[Ni].[Co]=S KAEHZLZKAKBMJB-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 239000011514 iron Substances 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 18
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- 239000010949 copper Substances 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
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- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 17
- 230000001376 precipitating Effects 0.000 claims abstract description 17
- 239000011499 joint compounds Substances 0.000 claims abstract description 15
- 239000007787 solids Substances 0.000 claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound 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OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N dihydrogen sulfide Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007789 gases Substances 0.000 claims abstract description 8
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 8
- 238000007254 oxidation reactions Methods 0.000 claims abstract description 8
- 239000011977 sulfuric acid Substances 0.000 claims abstract description 8
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- 241001081830 Degeneriaceae Species 0.000 claims description 25
- 239000002253 acids Substances 0.000 claims description 14
- 239000000463 materials Substances 0.000 claims description 14
- 238000003723 Smelting Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 11
- 239000005864 Sulphur Substances 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound 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[S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 238000009867 copper metallurgy Methods 0.000 claims description 6
- 238000010310 metallurgical processes Methods 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
- C22B23/043—Sulfurated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
- C22B23/0461—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
-
- 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
Abstract
Description
技术领域
本发明属于冶金技术领域,具体涉及一种低冰镍湿法处理直接分离镍铜的方法。
背景技术
传统镍生产过程中,首先将镍精矿经干燥造锍熔炼,产出低冰镍,转炉吹炼低冰镍,除去铁和部分硫,得到含铜和镍约70%左右的高冰镍,高冰镍再经磨浮分选得到二次镍精矿、二次铜精矿和一次合金,分别作为镍、铜和贵金属生产的原料。在低冰镍吹炼过程中,转炉温度高于1230℃,吹炼时间较长,且部分钴会进入转炉渣,为了回收其中的钴及其它有价金属,转炉渣还需进一步贫化后再吹炼。因此,整个生产过程中物料循环量大,能耗高,且钴的回收率较低。
发明内容
本发明的目的是为了解决现有技术中存在的技术问题,提供一种生产能耗低、金属回收率高且能直接实现铜和贵金属与镍钴分离的低冰镍湿法处理直接分离镍铜的方法。
为了达到上述目的,本发明采用以下技术方案:一种低冰镍湿法处理直接分离镍铜的方法,该方法包括以下步骤:
A、一段浸出:将低冰镍采用硫酸进行一段逆流浸出,浸出过程中控制液固比为4-6:1、温度为70-90℃、时间为3-4h,一段浸出后过滤得到含镍钴铁的一段浸出液以及主要成分为硫化铜和贵金属的一段浸出渣,一段浸出渣进入铜冶炼系统;
B、二段浸出:采用一段浸出得到的一段浸出液对低冰镍进行二段逆流浸出,浸出过程中控制液固比为4-6:1、温度为70-90℃、时间为3-4h,二段浸出后得到二段浸出液和二段浸出渣,二段浸出渣返回一段浸出工序继续浸出;
C、镍钴沉淀:将二段浸出液以及以上两段浸出过程中产生的硫化氢气体通入镍钴沉淀工序进行镍钴硫化沉淀,得到含铁的沉淀后液以及镍钴硫化沉淀渣,镍钴硫化沉淀渣进入镍钴冶炼系统;
D、氧化水解:将镍钴沉淀后得到的沉淀后液进行高温氧化水解除铁工艺,过滤得到铁渣和含酸液,含酸液返回一段浸出工序。
进一步地,所述低冰镍是镍铜钴冶金过程中火法冶炼工序中的一种中间物料,其主要成分所占质量百分比为镍15-30%、铜10-20%、铁10-35%、钴0.3-2.5%、硫20-35%。
进一步地,所述低冰镍的粒度为100-180目。
进一步地,所述步骤C中镍钴硫化沉淀的工艺条件为:温度20-40℃、时间3-6h、pH为1.0-2.0。
进一步地,所述步骤D中高温水解除铁工艺条件为:温度130-180℃、时间1.5-4.0h、氧气压力0.6-1.5Mpa。
本发明相对现有技术具有以下有益效果:本发明低冰镍湿法处理直接分离镍铜的方法是将低冰镍采用硫酸一段逆流浸出,得到含镍钴铁的一段浸出液以及主要成分为硫化铜和贵金属的一段浸出渣,然后采用一段浸出液对低冰镍进行二段浸出得到镍钴铁的二段浸出液和二段浸出渣,直接实现了铜和贵金属与镍钴铁的分离,实现了镍钴铁的选择性浸出,两段浸出所产生的硫化氢气体与二段浸出液进行镍钴硫化沉淀,得到含铁的沉淀后液以及镍钴硫化沉淀渣,实现了镍钴与铁的分离,最后将沉淀后液进行高温氧化水解除铁工艺,将铁以三氧化二铁的形式外排,且水解过程中产生酸,含酸液返回浸出工序,实现了部分酸和水的循环利用。本发明整个工艺过程实现了镍钴与贵金属和铜的直接分离,避免低冰镍转炉吹炼成高冰镍过程中钴、镍、贵金属等损失较高、物料循环量大、能耗高的弊端,同时省去了传统工艺中高锍磨浮分离镍铜工艺,从而大大缩短了工艺路程,降低了生产能耗,提高了镍、铜、钴和贵金属的回收率,工艺流程简单,没有废水废渣产生,大大节省了工艺成本。
附图说明
图1为本发明的流程示意图。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步说明。
实施例1
某冶炼厂在镍铜钴冶金过程中火法冶炼工序中产生的中间物料低冰镍,其主要成分所占质量百分比为镍24.95%、铜17.52%、铁27.2%、钴0.42%、硫24.96%。对该低冰镍湿法处理直接分离镍铜,具体包括以下步骤:
A、一段浸出:将粒度为160目的低冰镍采用硫酸进行一段逆流浸出,浸出过程中控制液固比为4:1、温度为80℃、时间为4h,一段浸出后过滤得到含镍钴铁的一段浸出液以及主要成分为硫化铜和贵金属的一段浸出渣,一段浸出渣进入铜冶炼系统。
B、二段浸出:采用一段浸出得到的一段浸出液对粒度为160目的低冰镍进行二段逆流浸出,浸出过程中控制液固比为4:1、温度为80℃、时间为4h,二段浸出后得到二段浸出液和二段浸出渣,二段浸出渣返回一段浸出工序继续浸出。
C、镍钴沉淀:将二段浸出液以及以上两段浸出过程中产生的硫化氢气体通入镍钴沉淀工序并在温度30℃、时间4h、pH为1.5的条件下进行镍钴硫化沉淀,得到含铁的沉淀后液以及镍钴硫化沉淀渣,镍钴硫化沉淀渣进入镍钴冶炼系统。
D、氧化水解:将镍钴沉淀后得到的沉淀后液在温度160℃、时间3h、氧气压力1.0Mpa的条件下进行高温氧化水解除铁工艺,过滤得到铁渣和含酸液,含酸液返回一段浸出工序。
实施例1镍钴铁选择性浸出率及主要物料成分见表一。
表一:实施例1 镍钴铁选择性浸出率及主要物料成分
实施例2
某冶炼厂在镍铜钴冶金过程中火法冶炼工序中产生的中间物料低冰镍,其主要成分所占质量百分比为镍25.95%、铜16.52%、铁30.2%、钴0.50%、硫27.5%。对该低冰镍湿法处理直接分离镍铜,具体包括以下步骤:
A、一段浸出:将粒度为180目的低冰镍采用硫酸进行一段逆流浸出,浸出过程中控制液固比为5:1、温度为90℃、时间为3h,一段浸出后过滤得到含镍钴铁的一段浸出液以及主要成分为硫化铜和贵金属的一段浸出渣,一段浸出渣进入铜冶炼系统。
B、二段浸出:采用一段浸出得到的一段浸出液对粒度为180目的低冰镍进行二段逆流浸出,浸出过程中控制液固比为5:1、温度为90℃、时间为3h,二段浸出后得到二段浸出液和二段浸出渣,二段浸出渣返回一段浸出工序继续浸出。
C、镍钴沉淀:将二段浸出液以及以上两段浸出过程中产生的硫化氢气体通入镍钴沉淀工序并在温度40℃、时间3h、pH为1.0的条件下进行镍钴硫化沉淀,得到含铁的沉淀后液以及含镍钴的沉淀渣,含镍钴的沉淀渣进入镍钴冶炼系统。
D、氧化水解:将镍钴沉淀后得到的沉淀后液在温度180℃、时间1.5h、氧气压力1.5Mpa的条件下进行高温氧化水解除铁工艺,过滤得到铁渣和含酸液,含酸液返回一段浸出工序。
实施例2镍钴铁选择性浸出率及主要物料成分见表二。
表二:实施例2镍钴铁选择性浸出率及主要物料成分
实施例3
某冶炼厂在镍铜钴冶金过程中火法冶炼工序中产生的中间物料低冰镍,其主要成分所占质量百分比为镍24.86%、铜16.4%、铁25.65%、钴0.43%、硫25.81%。对该低冰镍湿法处理直接分离镍铜,具体包括以下步骤:
A、一段浸出:将粒度为100目的低冰镍采用硫酸进行一段逆流浸出,浸出过程中控制液固比为6:1、温度为70℃、时间为4h,一段浸出后过滤得到含镍钴铁的一段浸出液以及主要成分为硫化铜和贵金属的一段浸出渣,一段浸出渣进入铜冶炼系统。
B、二段浸出:采用一段浸出得到的一段浸出液对粒度为100目的低冰镍进行二段逆流浸出,浸出过程中控制液固比为6:1、温度为70℃、时间为4h,二段浸出后得到二段浸出液和二段浸出渣,二段浸出渣返回一段浸出工序继续浸出。
C、镍钴沉淀:将二段浸出液以及以上两段浸出过程中产生的硫化氢气体通入镍钴沉淀工序并在温度20℃、时间6h、pH为2.0的条件下进行镍钴硫化沉淀,得到含铁的沉淀后液以及含镍钴的沉淀渣,含镍钴的沉淀渣进入镍钴冶炼系统。
D、氧化水解:将镍钴沉淀后得到的沉淀后液在温度130℃、时间4.0h、氧气压力0.6Mpa的条件下进行高温氧化水解除铁工艺,过滤得到铁渣和含酸液,含酸液返回一段浸出工序。
实施例3镍钴铁选择性浸出率及主要物料成分见表三。
表三:实施例3镍钴铁选择性浸出率及主要物料成分
实施例4
某冶炼厂在镍铜钴冶金过程中火法冶炼工序中产生的中间物料低冰镍,其主要成分所占质量百分比为镍28.86%、铜15.4%、铁27.65%、钴0.55%、硫27.4%。对该低冰镍湿法处理直接分离镍铜,具体包括以下步骤:
A、一段浸出:将粒度为120目的低冰镍采用硫酸进行一段逆流浸出,浸出过程中控制液固比为6:1、温度为75℃、时间为4h,一段浸出后过滤得到含镍钴铁的一段浸出液以及主要成分为硫化铜和贵金属的一段浸出渣,一段浸出渣进入铜冶炼系统。
B、二段浸出:采用一段浸出得到的一段浸出液对粒度为120目的低冰镍进行二段逆流浸出,浸出过程中控制液固比为6:1、温度为75℃、时间为4h,二段浸出后得到二段浸出液和二段浸出渣,二段浸出渣返回一段浸出工序继续浸出。
C、镍钴沉淀:将二段浸出液以及以上两段浸出过程中产生的硫化氢气体通入镍钴沉淀工序并在温度35℃、时间5h、pH为1.8的条件下进行镍钴硫化沉淀,得到含铁的沉淀后液以及含镍钴的沉淀渣,含镍钴的沉淀渣进入镍钴冶炼系统。
D、氧化水解:将镍钴沉淀后得到的沉淀后液在温度140℃、时间3h、氧气压力1.2Mpa的条件下进行高温氧化水解除铁工艺,过滤得到铁渣和含酸液,含酸液返回一段浸出工序。
实施例4镍钴铁选择性浸出率及主要物料成分见表四。
表四:实施例4镍钴铁选择性浸出率及主要物料成分
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