CN115321706A - 一种降低镍钴萃余液中cod和总磷的方法 - Google Patents
一种降低镍钴萃余液中cod和总磷的方法 Download PDFInfo
- Publication number
- CN115321706A CN115321706A CN202210906299.1A CN202210906299A CN115321706A CN 115321706 A CN115321706 A CN 115321706A CN 202210906299 A CN202210906299 A CN 202210906299A CN 115321706 A CN115321706 A CN 115321706A
- Authority
- CN
- China
- Prior art keywords
- nickel
- organic phase
- raffinate
- acid solution
- nickel cobalt
- 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
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 20
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 16
- 239000011574 phosphorus Substances 0.000 title claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 title abstract description 6
- 239000001301 oxygen Substances 0.000 title abstract description 6
- 239000000126 substance Substances 0.000 title abstract description 6
- 239000000243 solution Substances 0.000 claims abstract description 41
- 239000012074 organic phase Substances 0.000 claims abstract description 40
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012266 salt solution Substances 0.000 claims abstract description 30
- 159000000000 sodium salts Chemical class 0.000 claims abstract description 30
- 239000002253 acid Substances 0.000 claims abstract description 19
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 16
- 239000010941 cobalt Substances 0.000 claims abstract description 16
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 238000000605 extraction Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000007127 saponification reaction Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- 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
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
- C22B3/386—Polyphosphoric oxyacids, or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
本发明公开了一种降低镍钴萃余液中COD和总磷的方法,包括以下步骤:(1)向镍钴萃余液中加入酸溶液后搅拌均匀,得到P507空白有机相与钠盐溶液的混合物;向镍钴萃余液中加入酸溶液至镍钴萃余液的pH为3.0‑3.5;镍钴萃余液与酸溶液的体积比为20‑30:1;向镍钴萃余液中加入酸溶液后搅拌的工艺条件为:搅拌时间为6min‑10min、搅拌温度为30℃‑40℃;(2)将P507空白有机相与钠盐溶液的混合物静置澄清至P507空白有机相与钠盐溶液分层,再进行油水分离,得到P507空白有机相与钠盐溶液;P507空白有机相返回至P507萃取剂萃取镍钴的生产过程。本发明能够节约生产成本、降低外排水对外界污染。
Description
技术领域
本发明属于镍钴萃取技术领域,具体涉及一种降低镍钴萃余液中COD和总磷的方法。
背景技术
在镍钴采用P507萃取剂萃取的生产过程中,萃取生产后产生的萃余液,一般是从离皂化段最近的萃取段出口排出,由于萃余液出口紧挨着皂化段,萃取出料段中的水相不可避免的夹带了皂后有机相,从而导致萃余液中的COD和总磷较高,这是由于P507萃取剂在皂化后形成了溶解性钠皂盐C16H34O2P-ONa,导致其水相和有机相皆有溶解性,反应方程式如下:C16H34O2P-OH+NaOH=C16H34O2P-ONa+H2O。
发明内容
针对现有技术中的问题,本发明提供一种能够节约生产成本、降低外排水对外界污染的降低镍钴萃余液中COD和总磷的方法。
本发明采用以下技术方案:
一种降低镍钴萃余液中COD和总磷的方法,其特征在于,所述方法包括以下步骤:
(1)向镍钴萃余液中加入酸溶液后搅拌均匀,得到P507空白有机相与钠盐溶液的混合物;向镍钴萃余液中加入酸溶液至镍钴萃余液的pH为3.0-3.5;镍钴萃余液与酸溶液的体积比为20-30:1;向镍钴萃余液中加入酸溶液后搅拌的工艺条件为:搅拌时间为6min-10min、搅拌温度为30℃-40℃;
(2)将P507空白有机相与钠盐溶液的混合物静置澄清至P507空白有机相与钠盐溶液分层,再进行油水分离,得到P507空白有机相与钠盐溶液;P507空白有机相返回至P507萃取剂萃取镍钴的生产过程。
根据上述的降低镍钴萃余液中COD和总磷的方法,其特征在于,步骤(1)镍钴萃余液中镍的含量为0.01g/L-0.1g/L,钴的含量为0.005g/L-0.08g/L。
根据上述的降低镍钴萃余液中COD和总磷的方法,其特征在于,步骤(1)中酸溶液为硫酸溶液或盐酸溶液。
根据上述的降低镍钴萃余液中COD和总磷的方法,其特征在于,所述硫酸溶液的浓度为400g/L-600g/L;所述盐酸溶液的浓度为180g/L-200g/L。
根据上述的降低镍钴萃余液中COD和总磷的方法,其特征在于,步骤(2)中将P507空白有机相与钠盐溶液的混合物静置15min-25min。
本发明的有益技术效果:本发明使萃余液水相中的溶解性皂盐重新变为不溶于水的萃取剂,从而与水相分离开来。分离后的有机相可返回P507萃取生产过程继续使用,水相的COD和总P大幅度下降。如此一来,萃取剂和溶剂油损耗下降,节约了生产成本,也降低了外排水对外界的污染。
附图说明
图1为本发明方法的工艺流程示意图。
具体实施方式
参见图1,本发明的一种降低镍钴萃余液中COD和总磷的方法,包括以下步骤:
(1)向镍钴萃余液中加入酸溶液后进行充分混合,得到P507空白有机相与钠盐溶液的混合物;向镍钴萃余液中加入酸溶液至镍钴萃余液的pH为3.0-3.5;镍钴萃余液与酸溶液的体积比为20-30:1;镍钴萃余液中镍的含量为0.01g/L-0.1g/L,钴的含量为0.005g/L-0.08g/L。向镍钴萃余液中加入酸溶液后搅拌的工艺条件为:搅拌时间为6min-10min、搅拌温度为30℃-40℃。酸溶液为硫酸溶液或盐酸溶液,硫酸溶液的浓度为400g/L-600g/L;所述盐酸溶液的浓度为180g/L-200g/L。溶解性钠皂盐与硫酸的反应方程式如下:
2C16H34O2P-ONa+H2SO4=2C16H34O2P-OH+Na2SO4
(2)将P507空白有机相与钠盐溶液的混合物静置15min-25min澄清至P507空白有机相与钠盐溶液分层,再进行油水分离,得到P507空白有机相与钠盐溶液;P507空白有机相返回至P507萃取剂萃取镍钴的生产过程。
下面通过实施例对本发明的技术方案进行进一步的解释说明。
实施例1
向镍钴萃余液中加入硫酸溶液后充分混合至镍钴萃余液的pH为3.0,得到P507空白有机相与钠盐溶液的混合物;镍钴萃余液与硫酸溶液的体积比为20:1;镍钴萃余液中镍的含量为0.01g/L,钴的含量为0.005g/L。硫酸溶液的浓度为400g/L。
将P507空白有机相与钠盐溶液的混合物静置15min后澄清至P507空白有机相与钠盐溶液分层,再进行油水分离,得到P507空白有机相与钠盐溶液,P507空白有机相返回至P507萃取剂萃取镍钴的生产过程。
实施例2
向镍钴萃余液中加入硫酸溶液后充分混合至镍钴萃余液的pH为3.2,得到P507空白有机相与钠盐溶液的混合物;镍钴萃余液与硫酸溶液的体积比为25:1;镍钴萃余液中镍的含量为0.05g/L,钴的含量为0.05g/L。硫酸溶液的浓度为500g/L。
将P507空白有机相与钠盐溶液的混合物静置20min后澄清至P507空白有机相与钠盐溶液分层,再进行油水分离,得到P507空白有机相与钠盐溶液,P507空白有机相返回至P507萃取剂萃取镍钴的生产过程。
实施例3
向镍钴萃余液中加入硫酸溶液后充分混合至镍钴萃余液的pH为3.5,得到P507空白有机相与钠盐溶液的混合物;镍钴萃余液与硫酸溶液的体积比为30:1;镍钴萃余液中镍的含量为0.1g/L,钴的含量为0.08g/L。硫酸溶液的浓度为600g/L。
将P507空白有机相与钠盐溶液的混合物静置25min后澄清至P507空白有机相与钠盐溶液分层,再进行油水分离,得到P507空白有机相与钠盐溶液,P507空白有机相返回至P507萃取剂萃取镍钴的生产过程。
Claims (5)
1.一种降低镍钴萃余液中COD和总磷的方法,其特征在于,所述方法包括以下步骤:
(1)向镍钴萃余液中加入酸溶液后搅拌均匀,得到P507空白有机相与钠盐溶液的混合物;向镍钴萃余液中加入酸溶液至镍钴萃余液的pH为3.0-3.5;镍钴萃余液与酸溶液的体积比为20-30:1;向镍钴萃余液中加入酸溶液后搅拌的工艺条件为:搅拌时间为6min-10min、搅拌温度为30℃-40℃;
(2)将P507空白有机相与钠盐溶液的混合物静置澄清至P507空白有机相与钠盐溶液分层,再进行油水分离,得到P507空白有机相与钠盐溶液;P507空白有机相返回至P507萃取剂萃取镍钴的生产过程。
2.根据权利要求1所述的降低镍钴萃余液中COD和总磷的方法,其特征在于,步骤(1)镍钴萃余液中镍的含量为0.01g/L-0.1g/L,钴的含量为0.005g/L-0.08g/L。
3.根据权利要求1所述的降低镍钴萃余液中COD和总磷的方法,其特征在于,步骤(1)中酸溶液为硫酸溶液或盐酸溶液。
4.根据权利要求3所述的降低镍钴萃余液中COD和总磷的方法,其特征在于,所述硫酸溶液的浓度为400g/L-600g/L;所述盐酸溶液的浓度为180g/L-200g/L。
5.根据权利要求1所述的降低镍钴萃余液中COD和总磷的方法,其特征在于,步骤(2)中将P507空白有机相与钠盐溶液的混合物静置15min-25min。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210906299.1A CN115321706A (zh) | 2022-07-29 | 2022-07-29 | 一种降低镍钴萃余液中cod和总磷的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210906299.1A CN115321706A (zh) | 2022-07-29 | 2022-07-29 | 一种降低镍钴萃余液中cod和总磷的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN115321706A true CN115321706A (zh) | 2022-11-11 |
Family
ID=83919926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210906299.1A Pending CN115321706A (zh) | 2022-07-29 | 2022-07-29 | 一种降低镍钴萃余液中cod和总磷的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115321706A (zh) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2617471C1 (ru) * | 2016-03-16 | 2017-04-25 | Федеральное государственное бюджетное учреждение науки Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук (ИХТРЭМС КНЦ РАН) | Способ извлечения кобальта из сульфатного раствора, содержащего никель и кобальт |
CN114561556A (zh) * | 2022-01-08 | 2022-05-31 | 江西江钨钴业有限公司 | 一种反向萃取降低镍钴湿法冶炼过程中p507萃余液cod的方法 |
-
2022
- 2022-07-29 CN CN202210906299.1A patent/CN115321706A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2617471C1 (ru) * | 2016-03-16 | 2017-04-25 | Федеральное государственное бюджетное учреждение науки Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук (ИХТРЭМС КНЦ РАН) | Способ извлечения кобальта из сульфатного раствора, содержащего никель и кобальт |
CN114561556A (zh) * | 2022-01-08 | 2022-05-31 | 江西江钨钴业有限公司 | 一种反向萃取降低镍钴湿法冶炼过程中p507萃余液cod的方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103958416B (zh) | 硫酸钴的制造方法 | |
CN105039989A (zh) | 一种酸性氯化体系含铜蚀刻废液电积脱铜及再生的方法 | |
CN1752232A (zh) | 一种从废镍氢、镍镉电池回收硫酸镍溶液中一步萃取分离镍、镁、钴的方法 | |
CN101289707A (zh) | 电路板刻蚀废液中铜的回收方法 | |
CN105800819A (zh) | 一种高效分离复杂含重金属溶液中有价金属离子的方法 | |
CN107541748A (zh) | 一种低含铜微蚀废液预处理工艺及预处理系统 | |
CN115321706A (zh) | 一种降低镍钴萃余液中cod和总磷的方法 | |
CN202755059U (zh) | 蚀刻废液处理设备 | |
CN105755285A (zh) | 一种萃取剂的皂化洗涤方法 | |
CN104561563A (zh) | 一种铟富集渣还原预浸工艺及其装置 | |
CN102092694B (zh) | 萃取法制备氨基磺酸镍工艺 | |
CN114703377A (zh) | 一种从酸性蚀刻废液中萃取铜的方法 | |
CN115354167B (zh) | 一种降低钴镍萃取生产过程的萃余液中cod的方法 | |
CN211339693U (zh) | 一种碱性含铜蚀刻废液再生及氨氮废水循环系统 | |
CN103805783A (zh) | 一种净化含镍溶液的方法 | |
CN103818888B (zh) | 一种利用固体氨基磺酸制备氨基磺酸镍的方法 | |
CN102628100B (zh) | 酸循环利用进行酸浸萃取锌的装置及其方法 | |
CN105039695A (zh) | 从废铜液中提取硫酸铜的萃取方法 | |
CN201933158U (zh) | 一种酸性废蚀刻液的循环再生装置 | |
CN114540621B (zh) | 一种提取电镀污泥有价金属的工艺 | |
CN115418502B (zh) | 含稀土低浓度洗水的富集萃取工艺 | |
CN219342236U (zh) | 一种富铜砷固体废弃物的综合处理系统 | |
CN219793076U (zh) | 一种沉锂母液综合利用装置 | |
CN110042236B (zh) | 一种十级离心萃取镧铈混合轻稀土的工艺 | |
CN113186409B (zh) | 一种硫酸钴溶液深度除镉的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |