CN113856657A - 一种从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法 - Google Patents
一种从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法 Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 96
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 33
- 239000011572 manganese Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 150000003863 ammonium salts Chemical class 0.000 title claims abstract description 18
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 15
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- 239000000047 product Substances 0.000 claims abstract description 9
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- 239000012190 activator Substances 0.000 claims description 5
- 101710134784 Agnoprotein Proteins 0.000 claims description 4
- 150000001462 antimony Chemical class 0.000 claims description 4
- 238000003828 vacuum filtration Methods 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 150000003751 zinc Chemical class 0.000 claims description 3
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 2
- FAPDDOBMIUGHIN-UHFFFAOYSA-K antimony trichloride Chemical group Cl[Sb](Cl)Cl FAPDDOBMIUGHIN-UHFFFAOYSA-K 0.000 claims description 2
- JVLRYPRBKSMEBF-UHFFFAOYSA-K diacetyloxystibanyl acetate Chemical compound [Sb+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JVLRYPRBKSMEBF-UHFFFAOYSA-K 0.000 claims description 2
- 239000004246 zinc acetate Substances 0.000 claims description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical group [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 2
- 229960001763 zinc sulfate Drugs 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 9
- 230000008929 regeneration Effects 0.000 abstract description 4
- 238000011069 regeneration method Methods 0.000 abstract description 4
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 239000011701 zinc Substances 0.000 abstract description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007598 dipping method Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 2
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 11
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 239000011686 zinc sulphate Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Inorganic materials [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 229910020453 SiO2+2NaOH Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012492 regenerant Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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Abstract
一种从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法,首先将活性炭的沉浆泵入有加热装置的反应槽,于60~70℃温度下加热,趁热过滤和洗涤,滤液直接返回主流程供电解用液。滤渣用3~6%的工业盐酸或硝酸于反应槽中反应,或直接在滤盘内浸渍除去Ca、Mg等有害杂质,并洗至无Cl‑、NO3 ‑反应为止;然后用3~5%NaOH液除SiO2等杂质;最后用1~3%锌盐或锑盐进行活化,洗涤后于110℃下烘干,即可再用。采用本发明能够解决活性炭的再生问题,并且能够从活性炭中回收锰和铵盐。
Description
技术领域
本发明涉及湿法冶金技术领域,特别是一种从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法。
背景技术
活性炭在组合式深度净化电解锰液是保证锰品质量必不可少的一个重要环节,而且成本低,净化效果好。但它带来的负面影响则是带走了较多的锰和铵盐,约占总量的5~6%,除了这部份的直接损失,还有活性炭如何有效回收再用的问题,如不处理和再利用,他们在电解锰生产中的成本会占8~10%,如年产1.2万t电解锰厂,每天的损失将达10万元之多。丢弃不但是一笔较大的经济损失,而且放置露天长久,风吹雨打将会造成严重的二次污染的生态灾难。
发明内容
本发明的目的是提供一种从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法,能够解决活性炭的再生问题,并且能够从活性炭中回收锰和铵盐。
本发明通过以下技术方案解决上述技术问题:一种从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法,包括如下步骤:
(1)于5~6m3带间接加热和搅拌装置的反应槽中,泵入25~30%的活性炭浆料,开启搅拌,在槽的利用率为85%的情况下,泵入浆料4.2~5.1m3,至料温升至60~70℃时反应30~40分钟,趁热放入抽滤盘内进行真空抽滤和洗涤,含锰和铵盐的滤液返至主流程进行回收,渣待作下一步处理。
(2)将洗好的活性炭渣移至另一反应槽中,按固:液比为1:3的比例加入含3~5%HCl液反应30~60分钟,并进行滤洗至用AgNO3检验无Cl-反应为止。
(3)将完成步骤2的活性炭渣移至又一反应槽中,按固:液比为1:3~6的比例加入3~6%NaOH液反应30~60分钟,并进行滤洗至pH=6~8并用AgNO3检验无Cl-反应为止,在此滤饼上按固液比为1:1加入1~3%的锌盐或锑盐活化剂,让其浸渍30~50分钟后再抽干,并打循环20~30分钟后,将干料置于110℃温度下烘干,即得再生的活性炭料。
所述锌盐活化剂是ZnSO4或醋酸锌,锑盐活化剂为氯化锑或醋酸锑。
本发明的技术关键在于:
1、其滤洗必须是60~70℃的温度,否则由于铵盐的结晶关系而堵塞滤布,使过程难以进行;如发现葡萄糖等已脱色的有机物又被溶出了,且颜色较深,则还需将此液再用活性炭处理吸收后再返至主流程中使用,活性炭可继续使用。
2、其后的酸、碱和再生剂的加入等后续处理,是活性炭处理的必须过程,否则活性炭不能再生复用。
本发明的突出优点在于:
解决了活性炭的有效回收再利用问题,并且回收了活性炭中的锰和铵盐,降低电解锰生产中的成本。
具体实施方式
以下通过具体实施例对本发明的技术方案作进一步说明。
实施例1
本发明所述从生产锰品的活性炭中回收锰和铵盐以及活性炭再生的方法,包括如下步骤:
1、回收锰及铵盐
将活性碳浆料加热,使处于过饱和状态的(NH4)2SO4溶解度加大,(NH4)2SO4在25℃时溶解度为77.0g/L,70℃为90g/L,而体系中的(HN4)2SO4已达到120g/L,处于过饱和状态中,只有这样,滤布被堵塞的几率才会减少,过程也易进行。于5m3反应容器内注入25%矿浆浓度的活性炭浆4.25m3,开启搅拌用盘管蒸汽加热或电加热,使浆料液温达70~80℃,反应30~40分钟后,趁热放下过滤,滤毕滤饼再用70℃热水淋洗两次,每次14升热水,滤洗液合并返至深度净化池的主流程中回用。滤渣待作下一步除杂再生处理。
2、除Ca、Mg
用HCl或硝酸处理,主要是把吸附于其中的CaO、MgO溶解掉,比如:
CaO+2HCl→Cl2+H2O
MgO+2HCl→MgCl2+H2O
CaO+2HNO3→Ca(NO3)2+H2O
MgO+2HNO3→Mg(NO3)2+H2O
CaCl2,MgCl2是易溶于水的;Ca(NO3)2、Mg(NO3)2亦然。把步骤1的滤渣取出置于3m3的反应槽中,先放入2.328m3清水,加含25%水份的湿料活性碳浆976.8公斤,开始搅拌加入30%工业盐酸221升,继续搅拌40分钟。放浆料于滤盘内进行抽真空过滤,滤饼用清水淋洗4次,每次300升体积水,并用1%AgNO3液检测,用AgNO3检验无Cl-反应为止。
3、除SiO2和进一步除Cl-
用NaOH处理,主要是把吸附于其中的SiO2变成Na2SiO3除去。过程反应为:
SiO2+2NaOH=Na2SiO3+H2O
同时再一次除去剩余的Cl-呈NaCl开路。于3m3的反应槽中先放入2.55m3清水,加入步骤2处理过的全部活性碳浆,开始搅拌,加入30%浓度的液体碱185升和2.55kg的ZnSO4(含Zn或Sb 40%),加毕继续搅拌40分钟,放入滤盘进行过滤和洗涤。滤饼用300升/次清水洗5次。用1%AgNO3检试无Cl-反应为止。将洗净好的滤饼置于95~110℃的电热烘干箱内烘至水份<1%后,便可取出装袋或装入储罐内待用。
实施例2
在一个槽和滤盘中串联作业法。
为了减少劳动强度及搬运作业的机械损失,可把回收锰、铵,除Ca、Mg、除SiO2、Cl-及活性碳的活化再生作业在一个槽和滤盘中分布实施,把实施例1的步骤1的滤渣取出置于3m3的反应槽中,加入1.17m3清水,再加30%工业盐酸115升,让其浸渍25~30分钟;用清水洗4次,每次150升水,并用1%AgNO3液检试Cl-是否合格;合格后在滤饼上先加入1.3m3清水和30%液碱93升及1.3kgZnSO4,加毕让其浸渍30~35分钟,然后抽真空,滤液用浆泵打循环35~45分钟;用清水洗5次,每次160升水,用1%AgNO3液检试Cl-是否合格,洗至合格为止。将洗涤干净的滤饼置于95~110℃的电池烘干箱内使水份<1%后便可装袋或装入储罐内待用。
Claims (3)
1.一种从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法,其特征在于,包括如下步骤:
(1)于5~6m3带间接加热和搅拌装置的反应槽中,泵入25~30%的活性炭浆料,开启搅拌,在槽的利用率为85%的情况下,泵入浆料4.2~5.1m3,至料温升至60~70℃时反应30~40分钟,趁热放入抽滤盘内进行真空抽滤和洗涤,含锰和铵盐的滤液返至主流程进行回收,渣待作下一步处理,
(2)将洗好的活性炭渣移至另一反应槽中,按固:液比为1:3的比例加入含3~5%HCl液反应30~60分钟,并进行滤洗至用AgNO3检验无Cl-反应为止,
(3)将完成步骤(2)的活性炭渣移至另一反应槽中,按固:液比为1:3~6的比例加入3~6%NaOH液反应30~60分钟,并进行滤洗至pH=6~8并用AgNO3检验无Cl-反应为止,在此滤饼上按固液比为1:1加入1~3%的锌盐或锑盐活化剂,让其浸渍30~50分钟后再抽干,并打循环20~30分钟后,将干料置于95~110℃温度下烘干,即得再生的活性炭料。
2.根据权利要求1所述的从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法,其特征在于,所述锌盐活化剂是硫酸锌或醋酸锌,锑盐活化剂为氯化锑或醋酸锑。
3.根据权利要求1所述的从生产锰品的活性炭中回收锰和铵盐以及活性炭再生方法,其特征在于,所述真空抽滤和洗涤是在60~70℃下的温度滤洗。
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