CN116395779B - 一种从污酸硫化后液中抑镉萃氟的方法 - Google Patents
一种从污酸硫化后液中抑镉萃氟的方法 Download PDFInfo
- Publication number
- CN116395779B CN116395779B CN202310667604.0A CN202310667604A CN116395779B CN 116395779 B CN116395779 B CN 116395779B CN 202310667604 A CN202310667604 A CN 202310667604A CN 116395779 B CN116395779 B CN 116395779B
- Authority
- CN
- China
- Prior art keywords
- fluorine
- cadmium
- organic phase
- extracting
- extraction
- 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.)
- Active
Links
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 76
- 239000011737 fluorine Substances 0.000 title claims abstract description 76
- 229910052793 cadmium Inorganic materials 0.000 title claims abstract description 55
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000002253 acid Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 title claims abstract description 22
- 239000002699 waste material Substances 0.000 title claims abstract description 22
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 15
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 title 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000012074 organic phase Substances 0.000 claims abstract description 45
- 238000000605 extraction Methods 0.000 claims abstract description 30
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003112 inhibitor Substances 0.000 claims abstract description 15
- 230000007935 neutral effect Effects 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- AFCIMSXHQSIHQW-UHFFFAOYSA-N [O].[P] Chemical compound [O].[P] AFCIMSXHQSIHQW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- SJWFXCIHNDVPSH-UHFFFAOYSA-N octan-2-ol Chemical compound CCCCCCC(C)O SJWFXCIHNDVPSH-UHFFFAOYSA-N 0.000 claims description 6
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 claims description 4
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 claims description 4
- 238000005486 sulfidation Methods 0.000 claims description 4
- KJIOQYGWTQBHNH-UHFFFAOYSA-N undecanol Chemical compound CCCCCCCCCCCO KJIOQYGWTQBHNH-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000005968 1-Decanol Substances 0.000 claims description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 238000004065 wastewater treatment Methods 0.000 claims 2
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 150000001298 alcohols Chemical class 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 34
- 229910019142 PO4 Inorganic materials 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 239000010452 phosphate Substances 0.000 description 7
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- HXELGNKCCDGMMN-UHFFFAOYSA-N [F].[Cl] Chemical compound [F].[Cl] HXELGNKCCDGMMN-UHFFFAOYSA-N 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000000658 coextraction Methods 0.000 description 4
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 4
- 150000003512 tertiary amines Chemical class 0.000 description 4
- 125000001153 fluoro group Chemical group F* 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- -1 chlorine ions Chemical class 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000011775 sodium fluoride Substances 0.000 description 2
- 235000013024 sodium fluoride Nutrition 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 2
- 229960001763 zinc sulfate Drugs 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- UXNBTDLSBQFMEH-UHFFFAOYSA-N [Cu].[Zn].[Pb] Chemical compound [Cu].[Zn].[Pb] UXNBTDLSBQFMEH-UHFFFAOYSA-N 0.000 description 1
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- PLLZRTNVEXYBNA-UHFFFAOYSA-L cadmium hydroxide Chemical compound [OH-].[OH-].[Cd+2] PLLZRTNVEXYBNA-UHFFFAOYSA-L 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003864 primary ammonium salts Chemical class 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 150000003866 tertiary ammonium salts Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0492—Applications, solvents used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- 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
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
一种从污酸硫化后液中抑镉萃氟的方法,先将镉抑制剂与氟萃取剂按体积比为0.4~10配制成有机相;再将有机相和污酸硫化后液进行萃取,得到负载氟有机相;将负载氟有机相与反萃剂进行反萃,得到富氟溶液和空载有机相;空载有机相返回循环利用。本发明利用醇类的羟基优先于HCdCl3或H2CdCl4与磷氧中性萃取剂的P=O双键形成氢键缔合来抑制镉的萃取,所得富镉液中F/Cd>1600;镉抑制剂是碳原子数为8~11的直链醇,空间位阻小,抑镉效果好;利用磷氧中性萃取剂能在含HCl和H2SO4的污酸中优先萃取HF,实现HF与HCl、硫酸的分离。
Description
技术领域
本发明涉及金属分离领域,尤其涉及污酸硫化后液中萃取回收氟的方法。
背景技术
铜铅锌火法冶炼过程中,会产生一种酸性烟气循环吸收液,行业内习惯称该吸收液为污酸。污酸内含有一定量的砷、汞、镉、锌、铅等重金属及氟、氯和硫酸。污酸通常先经硫化,除去砷、汞、锌、铅等重金属,所得硫化后液里氟浓度为0.5~20g/L、镉浓度为0.05~1.5g/L、氯离子浓度为1~15g/L、硫酸浓度为20~150g/L,此时镉大部分以HCdCl3 和H2CdCl4形态存在。
为分离污酸硫化后液中的氟,可以采用氟氯共萃工艺,也可采用单独萃氟。氟氯共萃通常采用叔胺为萃取剂,如CN102732722B公开了一种萃取脱除氟、氯的湿法炼锌方法,该方法以叔胺N235为萃取剂、煤油为稀释剂,按常规方法配制成体积百分比为5%至50%的萃取有机相,经稀硫酸酸化后,从含氟、氯锌液中同时萃取氟、氯,负载氟氯有机相再用氢氧化钠溶液反萃,得到氯化钠和氟化钠溶液。CN103451449B公开了硫酸锌溶液中氟氯离子活化萃取分离方法,该方法采用三正辛胺为萃取剂、磷酸三丁酯为协萃剂、正辛醇为改性剂、260#溶剂油为稀释剂组成萃取有机相,对含氟氯的硫酸锌溶液萃取,得到的负载氟氯有机相,再经洗涤后用碳酸钠溶液反萃,得到氯化钠和氟化钠溶液。污酸硫化后液中含有一定量的镉,CN102732722B和CN103451449B虽未提及叔胺对镉有萃取效应,但笔者采用叔胺萃取污酸硫化后液中的氟氯时发现镉会共萃,镉的萃取率高达90%以上。
单独萃氟可以采用磷酸酯类萃取剂,如CN108114507B公开了一种在溶液中萃取氟离子的方法,该方法将磷酸酯类与含硅有机溶剂混合配制成有机相,其中磷酸酯类体积分数为40%~60%,在40℃~100℃与待萃液反应10~60分钟萃取氟。CN108114507B应用在磷矿的硫磷混酸浸出液中和含氟废水中萃取氟,并未涉及在含镉含氟的溶液中萃氟,而笔者采用磷酸酯类萃取污酸硫化后液中的氟时发现镉会共萃。
文献《从氯化浸出液中分离锌与镉的萃取剂选择和评价》中指出,伯胺、叔胺和季铵盐类萃取剂均能在含氯离子的溶液中萃取镉。文献《磷酸三丁醋从氯化物介质中萃取Zn与Cd的机理研究》中说,磷酸三丁醋能以中性络合反应机理萃取HCdCl3 和H2CdCl4,说明磷酸酯类具有在含Cl-和H+的溶液中萃取镉的能力。由于污酸中含有一定浓度的氯离子,现有的胺类和磷酸酯类萃取剂,在萃取污酸中的氟时都会造成镉的共萃。负载镉和氟的有机相,如用水反萃,所得反萃液还需再次进行氟和镉的分离;如用碱性溶液反萃,反萃时镉会生成氢氧化镉沉淀,造成反萃分相困难、影响工艺连续性。
发明内容
本发明的目的是为了解决现有萃取技术在污酸硫化后液中回收氟时,会造成镉共萃所存在的缺陷,提供一种抑镉萃氟的方法。
本发明采用如下技术方案实现:
一种从污酸中抑镉萃氟的方法,包括如下步骤:
(1)有机相配制:将氟萃取剂和镉抑制剂混合配制成有机相;其中镉抑制剂与氟萃取剂体积比为:0.4~10;镉抑制剂是碳原子数为8~11的直链醇;
(2)萃取:将所述有机相和污酸进行萃取,得到负载氟有机相;
(3)反萃:将所述负载氟有机相与反萃剂进行反萃,得到富氟溶液和空载有机相;空载有机相返回步骤(2)循环利用。
在本发明的一种从污酸硫化后液中抑镉萃氟的方法中,具体的,在步骤(1)中,所述氟萃取剂为磷氧中性萃取剂,所述镉抑制剂是1-辛醇、仲辛醇、1-壬醇、1-葵醇、1-十一醇的一种。
在本发明的一种从污酸硫化后液中抑镉萃氟的方法中,具体的,在步骤(2)中,所述污酸中氟浓度为0.5~20g/L、镉浓度为0.05~1.5g/L、氯离子浓度为1~15g/L、硫酸浓度为20~150g/L。
在本发明的一种从污酸硫化后液中抑镉萃氟的方法中,具体的,在步骤(3)中,所述反萃剂为水、氢氧化钠溶液、碳酸钠溶液或稀氨水。
本发明一种从污酸硫化后液中抑镉萃氟的方法具有以下有益效果:
(1)本发明利用醇类的羟基优先于HCdCl3或H2CdCl4与磷氧中性萃取剂的P=O双键形成氢键缔合来抑制镉的萃取,所得富镉液中F/Cd>1600。
(2)本发明的镉抑制剂采用碳原子数为8~11的直链醇,相对于支链醇空间位阻更小,更利于与磷氧中性萃取剂形成氢键缔合,抑镉效果更好。
(3)利用磷氧中性萃取剂能在含HCl和H2SO4的污酸中优先萃取HF,实现HF与HCl、和硫酸的分离。
以下结合附图和具体实施方式对本发明作进一步说明。
附图说明
图1为本发明抑镉萃氟的工艺流程图。
具体实施方式
下面通过具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明,但不以任何形式限制本发明。
实施例1:如图1所示,将镉抑制剂仲辛醇和氟萃取剂磷酸三丁酯按体积比为9:1配制成有机相。有机相与含F 13961 mg/L、Cd 89.2mg/L、Cl- 9351 mg/L、硫酸107438mg/L、F/Cd=157的污酸硫化后液按O/A=2/1萃取,分出负载氟有机相和萃余液。负载氟有机相与1.5%氢氧化钠溶液按O/A=10/1反萃,分出空载有机相和富氟溶液。富氟溶液中pH=6、F/Cd=15560,与污酸硫化后液相比F/Cd提高99倍。具体数据见表1。
表1 实施例1数据
对比例1:对比例1与实施例1的区别在镉抑制剂仲辛醇和氟萃取剂磷酸三丁酯体积比为0.11:1。经萃取、反萃,所得富氟溶液中F/Cd=217,与污酸硫化后液相比F/Cd只提高1.4倍。具体数据见表2。
表2 对比例1数据
实施例2:如图1所示,将镉抑制剂仲辛醇和氟萃取剂磷酸三丁酯按体积比为1:1配制成有机相。有机相与含F 12966 mg/L、Cd 90.2mg/L、Cl- 9254 mg/L、硫酸99450mg/L、F/Cd=144的污酸硫化后液按O/A=2/1萃取,分出负载氟有机相和萃余液。负载氟有机相与水按O/A=2/1反萃,分出空载有机相和富氟溶液。富氟溶液中pH=2.5、F/Cd=6017,与污酸硫化后液相比F/Cd提高42倍。具体数据见表3。
表3 实施例2数据
对比例2:对比例2与实施例2的区别在于将有机相中的仲辛醇换成异辛醇。经萃取、反萃,所得富氟溶液中F/Cd=461,与污酸硫化后液相比F/Cd只提高3.2倍。具体数据见表4。
表4 对比例2数据
实施例3:如图1所示,镉抑制剂仲辛醇和氟萃取剂磷酸三丁酯按体积比1:1配制成有机相。有机相与含F 11224 mg/L、Cd 72.1mg/L、Cl- 7489 mg/L、硫酸11653mg/L、F/Cd=156的污酸硫化后液按O/A=6/1进行四级逆流萃取,分出一次负载氟有机相和一次萃余液。一次负载氟有机相与1.5%氢氧化钠溶液按O/A=7/1反萃,分出空载有机相和一次富氟溶液。空载有机相和一次萃余液按O/A=6/1进行四级逆流萃取,分出二次负载氟有机相和二次萃余液。二次负载氟有机相与1.5%氢氧化钠溶液按O/A=14/1反萃,分出空载有机相和二次富氟溶液。
一次富氟溶液中pH=6、F/Cd=1634,与污酸硫化后液相比F/Cd提高10倍。二次富氟溶液中pH=6、F/Cd=2743,与一次萃余液相比F/Cd提高50倍具体数据见表5。
表5 实施例3数据
Claims (4)
1.一种从污酸硫化后液中抑镉萃氟的方法,其特征在于包括如下步骤:
(1)有机相配制:将氟萃取剂和镉抑制剂混合配制成有机相;其中镉抑制剂与氟萃取剂体积比为:0.4~10;镉抑制剂是碳原子数为8~11的直链醇;氟萃取剂为磷氧中性萃取剂;
(2)萃取:将所述有机相和污酸硫化后液进行萃取,得到负载氟有机相;
(3)反萃:将所述负载氟有机相与反萃剂进行反萃,得到富氟溶液和空载有机相;空载有机相返回步骤(2)循环利用。
2.根据权利要求1所述的一种从污酸硫化后液中抑镉萃氟的方法,其特征在于,所述镉抑制剂是1-辛醇、仲辛醇、1-壬醇、1-葵醇、1-十一醇的一种。
3.根据权利要求1或2所述的一种从污酸硫化后液中抑镉萃氟的方法,其特征在于,步骤(2)中,所述污酸硫化后液中氟浓度为0.5~20g/L、镉浓度为0.05~1.5g/L、氯离子浓度为1~15g/L、硫酸浓度为20~150g/L。
4.根据权利要求3所述的一种从污酸硫化后液中抑镉萃氟的方法,其特征在于,步骤(3)中,所述反萃剂为水、氢氧化钠溶液、碳酸钠溶液或稀氨水。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310667604.0A CN116395779B (zh) | 2023-06-07 | 2023-06-07 | 一种从污酸硫化后液中抑镉萃氟的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310667604.0A CN116395779B (zh) | 2023-06-07 | 2023-06-07 | 一种从污酸硫化后液中抑镉萃氟的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN116395779A CN116395779A (zh) | 2023-07-07 |
CN116395779B true CN116395779B (zh) | 2023-09-26 |
Family
ID=87012778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310667604.0A Active CN116395779B (zh) | 2023-06-07 | 2023-06-07 | 一种从污酸硫化后液中抑镉萃氟的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116395779B (zh) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4652431A (en) * | 1981-02-26 | 1987-03-24 | Prodeco, Inc. | Process for recovering uranium using an alkyl pyrophosphoric acid and alkaline stripping solution |
WO1997001649A1 (en) * | 1995-06-24 | 1997-01-16 | Zeneca Limited | Method for selective separation of cadmium from an acidic aqueous solution |
CN101818262A (zh) * | 2009-12-23 | 2010-09-01 | 株洲冶炼集团股份有限公司 | 一种从硫酸锌溶液中脱除氯的方法 |
CN102732722A (zh) * | 2012-05-21 | 2012-10-17 | 贵州顶效开发区宏达金属综合回收有限公司 | 一种萃取脱除氟、氯的湿法炼锌方法 |
CN103451449A (zh) * | 2013-08-30 | 2013-12-18 | 红河锌联科技发展有限公司 | 硫酸锌溶液中氟氯离子活化萃取分离法 |
CN103866125A (zh) * | 2014-02-28 | 2014-06-18 | 红河锌联科技发展有限公司 | 锌灰物料碱洗萃取联合工艺脱除氟氯的方法 |
CN108033589A (zh) * | 2017-10-28 | 2018-05-15 | 株洲冶炼集团股份有限公司 | 一种制酸系统中的污酸除杂再利用的方法 |
CN110745900A (zh) * | 2019-11-04 | 2020-02-04 | 西安建筑科技大学 | 一种重金属铬(vi)和镉(ii)的分离方法 |
CN112981104A (zh) * | 2021-02-05 | 2021-06-18 | 桐乡市思远环保科技有限公司 | 一种处理含镉废渣并回收金属镉的方法 |
CN115089999A (zh) * | 2022-06-08 | 2022-09-23 | 广东工业大学 | 一种复合萃取剂在回收废铝材化学抛光液中废酸的应用 |
CN115141940A (zh) * | 2022-07-14 | 2022-10-04 | 赛恩斯环保股份有限公司 | 一种从硫酸介质中分离锌镉的方法 |
CN115181857A (zh) * | 2022-07-14 | 2022-10-14 | 赛恩斯环保股份有限公司 | 一种从铜烟灰浸出液中回收铜锌镉的方法 |
CN115745274A (zh) * | 2022-11-23 | 2023-03-07 | 河南省冶金研究所有限责任公司 | 铅冶炼污酸废水处理方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105439355B (zh) * | 2015-12-28 | 2018-05-25 | 中南大学 | 污酸资源回收与深度处理方法及装置 |
-
2023
- 2023-06-07 CN CN202310667604.0A patent/CN116395779B/zh active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4652431A (en) * | 1981-02-26 | 1987-03-24 | Prodeco, Inc. | Process for recovering uranium using an alkyl pyrophosphoric acid and alkaline stripping solution |
WO1997001649A1 (en) * | 1995-06-24 | 1997-01-16 | Zeneca Limited | Method for selective separation of cadmium from an acidic aqueous solution |
CN101818262A (zh) * | 2009-12-23 | 2010-09-01 | 株洲冶炼集团股份有限公司 | 一种从硫酸锌溶液中脱除氯的方法 |
CN102732722A (zh) * | 2012-05-21 | 2012-10-17 | 贵州顶效开发区宏达金属综合回收有限公司 | 一种萃取脱除氟、氯的湿法炼锌方法 |
CN103451449A (zh) * | 2013-08-30 | 2013-12-18 | 红河锌联科技发展有限公司 | 硫酸锌溶液中氟氯离子活化萃取分离法 |
CN103866125A (zh) * | 2014-02-28 | 2014-06-18 | 红河锌联科技发展有限公司 | 锌灰物料碱洗萃取联合工艺脱除氟氯的方法 |
CN108033589A (zh) * | 2017-10-28 | 2018-05-15 | 株洲冶炼集团股份有限公司 | 一种制酸系统中的污酸除杂再利用的方法 |
CN110745900A (zh) * | 2019-11-04 | 2020-02-04 | 西安建筑科技大学 | 一种重金属铬(vi)和镉(ii)的分离方法 |
CN112981104A (zh) * | 2021-02-05 | 2021-06-18 | 桐乡市思远环保科技有限公司 | 一种处理含镉废渣并回收金属镉的方法 |
CN115089999A (zh) * | 2022-06-08 | 2022-09-23 | 广东工业大学 | 一种复合萃取剂在回收废铝材化学抛光液中废酸的应用 |
CN115141940A (zh) * | 2022-07-14 | 2022-10-04 | 赛恩斯环保股份有限公司 | 一种从硫酸介质中分离锌镉的方法 |
CN115181857A (zh) * | 2022-07-14 | 2022-10-14 | 赛恩斯环保股份有限公司 | 一种从铜烟灰浸出液中回收铜锌镉的方法 |
CN115745274A (zh) * | 2022-11-23 | 2023-03-07 | 河南省冶金研究所有限责任公司 | 铅冶炼污酸废水处理方法 |
Non-Patent Citations (3)
Title |
---|
化学萃取丙酸平衡特性的研究;符钰, 秦炜, 戴猷元;清华大学学报(自然科学版)(第S1期);15-18 * |
毛应淮.《工艺环境学概论》.中国环境出版集团,2018,125,126. * |
湿法炼锌中性浸出液中铜、镉的萃取分离无渣净化工艺;卢立柱, 张大力, 谢慧琴, 柯家骏;化工冶金(第01期) * |
Also Published As
Publication number | Publication date |
---|---|
CN116395779A (zh) | 2023-07-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101671777B (zh) | 锗生产废液的多金属回收处理工艺 | |
CN104962743B (zh) | 一种从锌置换渣硫酸浸出液中选择性萃取回收镓锗铟的方法 | |
CN108300877A (zh) | 萃取回收锌置换渣浸出液中镓锗铟的方法 | |
CN103160689B (zh) | 一种溶剂萃取剂萃取除铁的方法 | |
KR101727978B1 (ko) | 토륨의 선택적 추출방법 | |
Rice | Recent developments and potential uses for carboxylic acid extractants—A review | |
AU2001239747A1 (en) | Process for recovery of metals from metal-containing ores | |
WO2015110702A1 (en) | Method for recovery of copper and zinc | |
CN1333090C (zh) | 一种氟碳铈矿氧化焙烧-硫酸浸出-萃取后有机相除氟的方法 | |
CN116395779B (zh) | 一种从污酸硫化后液中抑镉萃氟的方法 | |
CN106086406B (zh) | 一种有机萃取剂的再生方法 | |
JPH0210764B2 (zh) | ||
CN106282558B (zh) | 一种有机萃取剂的处理方法 | |
AU2013315355B2 (en) | Solvent extraction process | |
US2937925A (en) | Solvent extraction process for uranium from chloride solutions | |
US7959881B2 (en) | Method for scrubbing an amine type extractant after stripping | |
CN115181857A (zh) | 一种从铜烟灰浸出液中回收铜锌镉的方法 | |
CN111471874A (zh) | 一种氯化物体系萃取分离砷和铁的方法 | |
CN105018752B (zh) | 一种从低浓度硫酸铟溶液中分离富集与回收铟的方法 | |
RU2336346C1 (ru) | Способ извлечения металлов из сульфатных растворов, содержащих железо | |
CA1218237A (en) | Process for the recovery of indium by solvent extraction | |
EP4092147A1 (en) | Separation of arsenic from antimony and bismuth in an eluate | |
CA2265068C (en) | Method for removal of lead ion | |
EP0239501B1 (fr) | Procédé de séparation du fer à partir d'une solution organique contenant de l'uranium | |
JP3090142B2 (ja) | 塩化ニッケル溶液からの鉛イオンの除去方法 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |