CN108342572B - 从铜钴矿浸出液中采用二段萃取法除杂的工艺 - Google Patents
从铜钴矿浸出液中采用二段萃取法除杂的工艺 Download PDFInfo
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- CN108342572B CN108342572B CN201810229707.8A CN201810229707A CN108342572B CN 108342572 B CN108342572 B CN 108342572B CN 201810229707 A CN201810229707 A CN 201810229707A CN 108342572 B CN108342572 B CN 108342572B
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- extraction
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- 238000000605 extraction Methods 0.000 title claims abstract description 88
- 238000000034 methods Methods 0.000 title claims abstract description 26
- RYTYSMSQNNBZDP-UHFFFAOYSA-N [Co].[Cu] Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Co].[Cu] RYTYSMSQNNBZDP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000002386 leaching Methods 0.000 title claims description 20
- 239000012074 organic phases Substances 0.000 claims abstract description 64
- 239000011575 calcium Substances 0.000 claims abstract description 53
- 238000005406 washing Methods 0.000 claims abstract description 52
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 25
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound 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OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011977 sulfuric acid Substances 0.000 claims abstract description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001104 hydrochloric acid Substances 0.000 claims abstract description 17
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound 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[Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910052944 calcium sulfate Inorganic materials 0.000 claims abstract description 16
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound 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[Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000008346 aqueous phases Substances 0.000 claims abstract description 11
- 239000011701 zinc Substances 0.000 claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 11
- 238000007127 saponification reactions Methods 0.000 claims abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 7
- 239000012071 phases Substances 0.000 claims description 52
- 239000011901 water Substances 0.000 claims description 52
- 239000002253 acids Substances 0.000 claims description 3
- 239000002699 waste materials Substances 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 abstract description 6
- 229910052803 cobalt Inorganic materials 0.000 abstract description 5
- 238000002425 crystallisation Methods 0.000 abstract description 5
- 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 abstract description 3
- 239000010941 cobalt Substances 0.000 abstract description 3
- 238000009854 hydrometallurgy Methods 0.000 abstract description 2
- 239000007788 liquids Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011514 iron Substances 0.000 description 2
- KTVIXTQDYHMGHF-UHFFFAOYSA-L Cobalt(II) sulfate Chemical compound 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[Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- 239000012141 concentrates Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052500 inorganic minerals Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052751 metals Inorganic materials 0.000 description 1
- 239000002184 metals Substances 0.000 description 1
- 239000011707 minerals Substances 0.000 description 1
- 239000002994 raw materials Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- C22B3/0004—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/0005—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like
- C22B3/004—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like using organo-metallic compounds or organo compounds of boron, silicon, phosphorus, selenium or tellurim
- C22B3/0041—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like using organo-metallic compounds or organo compounds of boron, silicon, phosphorus, selenium or tellurim using organo-metallic compounds of a single type
- C22B3/0043—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like using organo-metallic compounds or organo compounds of boron, silicon, phosphorus, selenium or tellurim using organo-metallic compounds of a single type using phosphorus-based acid derivatives
- C22B3/0044—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like using organo-metallic compounds or organo compounds of boron, silicon, phosphorus, selenium or tellurim using organo-metallic compounds of a single type using phosphorus-based acid derivatives of a single type
- C22B3/0045—Acyclic compounds
- C22B3/0063—Mononuclear oxyacids of pentavalent phosphorus or their esters(-ate)
- C22B3/0068—Phosphoric ((O)P(OH)3) type
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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
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- Y02P10/234—
Abstract
本发明属于钴湿法冶炼技术领域，特别涉及一种从铜钴矿浸出液中萃取除杂的方法。本发明针对现有技术存在的问题采用P204预萃取钙+P204萃取Ca、Cu、Zn等杂质的二段法工艺。P204先用氨水皂化，皂化率较低；通过控制水相pH、有机相与水相体积比、逆流萃取级数等工艺条件，使得萃余液中钙含量在0.05g/L以下，在硫酸钙结晶浓度下限，不产生硫酸钙结晶。由于P204皂化率较低，洗涤段可用低浓度硫酸进行洗涤，不产生硫酸钙结晶，有机中大部分Co被洗入水相；同时，洗涤段以低浓度硫酸替代盐酸洗涤，降低了盐酸耗量，减少Cl‑排放量，降低Cl‑处理成本。反萃段可用低浓度盐酸进行反萃，反萃后液中Co浓度较低。
Description
技术领域
本发明属于钴湿法冶炼技术领域，特别涉及一种从铜钴矿浸出液中萃取除杂的方法。
背景技术
铜钴精矿的湿法冶炼，一般在硫酸体系下，将矿物中的Co、Cu等有价金属浸出到溶液中，溶液经过后期净化，除去其中Fe、Ca、Cu、Mn、Mg、Al、Zn、Si等杂质，得到较为纯净的硫酸钴溶液；在除杂过程中，一般采用溶剂萃取法，先萃取Fe，后萃取Zn、Al、 Ca、Cu、Mn，通常不单独设萃钙工序。由于浸出液系统多为硫酸体系，在P204除杂工段会导致钙富集，产生大量硫酸钙结晶，堵塞管道，污染环境；同时，因P204过高的皂化率导致大量钴被萃入有机，从而增加洗涤工段酸耗，增大洗涤工段水相体积；现有技术一般在萃杂工段全部采用盐酸洗涤，这样会增加盐酸耗量，增加Cl-排放量，增加Cl-处理成本。
发明内容
本发明的目的在于克服现有技术的不足，提供一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，该工艺能够减少硫酸钙结晶，减少污染环境，减少钴的萃取量，也能够减少Cl-排放量，降低Cl-处理成本，同时减少后段除杂萃取、洗涤、反萃级数，降低生产成本。
为了达到上述目的，本发明的一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，它包括如下具体步骤：
第一段：采用P204从铜钴浸出液中预萃取除钙
将有机萃取剂P204用氨水皂化，皂化率为15-20%；萃取段进口水相pH在4.0-5.5，Ca浓度在0.7g/L-1.2g/L；有机相与水相体积比为（1-2）:1，萃取级数8-10级；萃取段出口水相pH在2.0-2.5，水相中Ca浓度低于硫酸钙结晶浓度下限；
萃取后的有机相用浓度为0.2N-0.4N的低浓度硫酸进行洗涤，有机相与水相体积比为（10-20）:1，洗涤级数6-8级；洗涤段出口水相中Co浓度在10-15g/L，Ca浓度低于硫酸钙结晶浓度下限；
洗涤后的有机相用浓度为1.3N-1.8N的低浓度盐酸进行反萃，有机相与水相体积比为（2-3）:1，反萃级数6-8级；反萃段出口水相中Co浓度在0.2-0.5g/L；
第二段：第一段反萃后P204从第一段萃余液中进一步萃取除杂
第一段反萃后的有机相P204进入后续工段，进一步萃取第一段萃余液中的Ca、Cu、Zn等杂质，萃取后的有机相用2N硫酸进行洗涤，洗涤后的有机相用4N硫酸进行反萃，反萃完所有杂质后的空白有机相重新返回第一段萃取钙。
作为优选，所述铜钴浸出液系统为SO4 2-体系。
作为优选，第一段中的萃取段、洗涤段和反萃段有机相流动方向与水相流动方向均相反，为逆流萃取、逆流洗涤和逆流反萃。
作为优选，第一段萃取段出口水相中Ca浓度在0.05g/L以下。
作为优选，第一段洗涤段出口水相中Ca浓度在0.1-0.3g/L。
作为优选，第一段反萃段出口水相中Ca浓度在5-8g/L。
作为优选，第一段反萃用的低浓度盐酸采用低浓度废酸。
本发明针对现有技术存在的问题采用P204预萃取钙+P204萃取Ca、Cu、Zn等杂质的二段法工艺。P204先用氨水皂化，为减少有机相中Co含量，皂化率较低，从而可以减少洗涤段的酸耗；通过控制水相pH、有机相与水相体积比、逆流萃取级数等工艺条件，使得萃余液中钙含量在0.05g/L以下，在硫酸钙结晶浓度下限，不产生硫酸钙结晶。由于P204皂化率较低，洗涤段可用低浓度硫酸进行洗涤，不产生硫酸钙结晶，有机中大部分Co被洗入水相；同时，洗涤段以低浓度硫酸替代盐酸洗涤，降低了盐酸耗量，减少Cl-排放量，降低Cl-处理成本。反萃段可用低浓度盐酸进行反萃，反萃后液中Co浓度较低，有机继续去往二段除杂，最后空白有机返回一段萃取段循环萃取。本发明工艺可减少硫酸钙结晶产生，减少环境污染；同时减少Cl-排放量，降低Cl-处理成本；减少后段除杂萃取、洗涤、反萃级数，降低生产成本。
本发明具有的有益效果：
1、一段萃余液Ca浓度在0.05g/L以下，低于硫酸钙结晶浓度下限，在二段硫酸体系除杂过程中不产生硫酸钙结晶；一段洗涤段水相出口Ca浓度在0.1-0.3g/L，低于硫酸钙结晶浓度下限，不产生硫酸钙结晶，可并入原料液。
2、一段采用盐酸反萃、二段采用硫酸反萃，由于一段萃余液中Ca浓度低，二段采用硫酸反萃可以在减少盐酸反萃液的同时保证硫酸反萃不产生大量硫酸钙结晶体。传统的一段法萃取除杂过程中必须采用盐酸进行反萃，盐酸反萃液的废水处理难度大，若直接采用硫酸替代盐酸反萃时，则容易产生大量的硫酸钙渣堵塞管道。通过本发明的工艺步骤和pH等工艺条件的控制，首先实现Ca与Cu、Zn、Co的初步分离，减少了后段硫酸钙结晶的产生；同时，一段反萃段出口水相中Co浓度在0.2-0.5g/L，表明预萃取钙的过程中保证了Co尽可能减少被萃入有机相中。
具体实施方式
实施例1
一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，它包括如下具体步骤：
第一段：采用P204从铜钴硫酸浸出液中预萃取除钙
将有机萃取剂P204用氨水皂化，皂化率为20%；萃取段进口水相pH在3.0-3.5，Ca浓度在0.7-1.2g/L；有机相与水相体积比为2:1，有机相流向与水相流向相反，为逆流萃取，萃取级数8级；萃取段出口水相pH在2.0，萃余液Ca浓度在0.05g/L以下；
萃取后的有机相用浓度为0.3-0.4N的低浓度硫酸进行洗涤，有机相与水相体积比为10:1，有机相流向与水相流向相反，为逆流洗涤，洗涤级数6级；洗涤段出口水相中Co浓度在10-15g/L，Ca浓度在0.1-0.3g/L；
洗涤后的有机相用浓度为1.3-1.8N的低浓度盐酸进行反萃，有机相与水相体积比为2:1，有机相流向与水相流向相反，为逆流反萃，反萃级数6级；反萃段出口水相中Co浓度在0.2g/L，Ca浓度在5-8g/L；
第二段：第一段反萃后P204从第一段萃余液中进一步萃取除杂
第一段反萃后的有机相P204进入后续工段，进一步萃取第一段萃余液中的Ca、Cu、Zn等杂质，萃取后的有机相用2N的硫酸进行洗涤，洗涤后的有机相用4N的硫酸进行反萃，反萃完所有杂质后的空白有机相重新返回第一段萃取钙。
实施例2
一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，它包括如下具体步骤：
第一段：采用P204从铜钴硫酸浸出液中预萃取除钙
将有机萃取剂P204用氨水皂化，皂化率为15%；萃取段进口水相pH在4.0，Ca浓度在0.7-1.2g/L；有机相与水相体积比为1.5:1，有机相流向与水相流向相反，为逆流萃取，萃取级数10级；萃取段出口水相pH在2.5，萃余液Ca浓度在0.05g/L以下；
萃取后的有机相用浓度为0.2-0.3N的低浓度硫酸进行洗涤，有机相与水相体积比为20:1，有机相流向与水相流向相反，为逆流洗涤，洗涤级数8级；洗涤段出口水相中Co浓度在10-15g/L，Ca浓度在0.1-0.3g/L；
洗涤后的有机相用浓度为1.3-1.8N的低浓度盐酸进行反萃，有机相与水相体积比为3:1，有机相流向与水相流向相反，为逆流反萃，反萃级数8级；反萃段出口水相中Co浓度在0.5g/L，Ca浓度在5-8g/L；
第二段：第一段反萃后P204从第一段萃余液中进一步萃取除杂
第一段反萃后的有机相P204进入后续工段，进一步萃取第一段萃余液中的Ca、Cu、Zn等杂质，萃取后的有机相用2N的硫酸进行洗涤，洗涤后的有机相用4N的硫酸进行反萃，反萃完所有杂质后的空白有机相重新返回第一段萃取钙。
实施例3
一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，它包括如下具体步骤：
第一段：采用P204从铜钴硫酸浸出液中预萃取除钙
将有机萃取剂P204用氨水皂化，皂化率为18%；萃取段进口水相pH在5.5，Ca浓度在0.7-1.2g/L；有机相与水相体积比为1:1，有机相流向与水相流向相反，为逆流萃取，萃取级数9级；萃取段出口水相pH在2.5，萃余液Ca浓度在0.05g/L以下；
萃取后的有机相用浓度为0.3-0.4N的低浓度硫酸进行洗涤，有机相与水相体积比为15:1，有机相流向与水相流向相反，为逆流洗涤，洗涤级数7级；洗涤段出口水相中Co浓度在10-15g/L，Ca浓度在0.1-0.3g/L；
洗涤后的有机相用浓度为1.3-1.8N的低浓度盐酸进行反萃，有机相与水相体积比为2.5:1，有机相流向与水相流向相反，为逆流反萃，反萃级数7级；反萃段出口水相中Co浓度在0.3g/L，Ca浓度在5-8g/L；
第二段：第一段反萃后P204从第一段萃余液中进一步萃取除杂
第一段反萃后的有机相P204进入后续工段，进一步萃取第一段萃余液中的Ca、Cu、Zn等杂质，萃取后的有机相用2N的硫酸进行洗涤，洗涤后的有机相用4N的硫酸进行反萃，反萃完所有杂质后的空白有机相重新返回第一段萃取钙。
Claims (4)
1.一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，其特征在于：包括如下具体步骤：
第一段：采用P204从铜钴浸出液中预萃取除钙
将有机萃取剂P204用氨水皂化，皂化率为15-20%；萃取段进口水相pH在4.0-5.5，Ca浓度在0.7g/L-1.2g/L；有机相与水相体积比为（1-2）:1，萃取级数8-10级；萃取段出口水相pH在2.0-2.5，水相中Ca浓度低于硫酸钙结晶浓度下限；第一段萃取段出口水相中Ca浓度在0.05g/L以下；
萃取后的有机相用浓度为0.2N-0.4N的低浓度硫酸进行洗涤，有机相与水相体积比为（10-20）:1，洗涤级数6-8级；洗涤段出口水相中Co浓度在10-15g/L，Ca浓度低于硫酸钙结晶浓度下限；第一段洗涤段出口水相中Ca浓度在0.1-0.3g/L；
洗涤后的有机相用浓度为1.3N-1.8N的低浓度盐酸进行反萃，有机相与水相体积比为（2-3）:1，反萃级数6-8级；反萃段出口水相中Co浓度在0.2-0.5g/L；第一段反萃段出口水相中Ca浓度在5-8g/L；
第二段：第一段反萃后P204从第一段萃余液中进一步萃取除杂
第一段反萃后的有机相P204进入后续工段，进一步萃取第一段萃余液中的Ca、Cu、Zn等杂质，萃取后的有机相用2N硫酸进行洗涤，洗涤后的有机相用4N硫酸进行反萃，反萃完所有杂质后的空白有机相重新返回第一段萃取钙。
2.根据权利要求1所述的一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，其特征在于：所述铜钴浸出液系统为SO4 2-体系。
3.根据权利要求1所述的一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，其特征在于：第一段中的萃取段、洗涤段和反萃段有机相流动方向与水相流动方向均相反，为逆流萃取、逆流洗涤和逆流反萃。
4.根据权利要求1所述的一种从铜钴矿浸出液中采用二段萃取法除杂的工艺，其特征在于：第一段反萃用的低浓度盐酸采用低浓度废酸。
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| CN106222411A (zh) * | 2016-08-26 | 2016-12-14 | 德清县立荣金属粉末有限公司 | 从钴盐溶液中采用三段萃取法除铜、锰、铁、钙、镁的方法 |
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| US8900535B2 (en) * | 2010-01-07 | 2014-12-02 | Barrick Gold Corporation | Production of zinc sulphate concentrates from a dilute zinc sulphate solution |
| WO2014008586A1 (en) * | 2012-07-12 | 2014-01-16 | Orbite Aluminae Inc. | Processes for preparing titanium oxide and various other products |
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