CN110885108A - 一种矿山铜氰废水高效无害化处理方法 - Google Patents
一种矿山铜氰废水高效无害化处理方法 Download PDFInfo
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- DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 52
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000010902 straw Substances 0.000 claims abstract description 26
- 239000000440 bentonite Substances 0.000 claims abstract description 21
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000000839 emulsion Substances 0.000 claims abstract description 7
- 239000004005 microsphere Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims abstract description 6
- 238000004880 explosion Methods 0.000 claims description 26
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 25
- 150000002910 rare earth metals Chemical class 0.000 claims description 20
- 239000000654 additive Substances 0.000 claims description 18
- 230000000996 additive effect Effects 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 16
- 239000003463 adsorbent Substances 0.000 claims description 15
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 10
- 238000003851 corona treatment Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 150000002500 ions Chemical class 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- 229920005610 lignin Polymers 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 5
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 239000010456 wollastonite Substances 0.000 claims description 5
- 229910052882 wollastonite Inorganic materials 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 8
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 13
- 229910052802 copper Inorganic materials 0.000 description 13
- 239000010949 copper Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 8
- 229910052737 gold Inorganic materials 0.000 description 8
- 239000010931 gold Substances 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- ZFXTZKMYLJXJDY-UHFFFAOYSA-N copper;oxalonitrile Chemical compound [Cu].N#CC#N ZFXTZKMYLJXJDY-UHFFFAOYSA-N 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- MXZVHYUSLJAVOE-UHFFFAOYSA-N gold(3+);tricyanide Chemical compound [Au+3].N#[C-].N#[C-].N#[C-] MXZVHYUSLJAVOE-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
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- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- B01J20/0229—Compounds of Fe
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Abstract
本发明公开了一种矿山铜氰废水高效无害化处理方法,包括以下步骤:步骤一,改性秸秆灰的制备:将秸秆灰加入到去离子水中超声分散30‑40min,超声功率为300‑400W,然后再依次加入氯化铁、氯化铝继续搅拌20‑30min。本发明采用的改性秸秆灰通过秸秆灰在氯化铁、氯化铝等原料的处理下,然后与改性膨润土复合,最后再经过共混体系的建立,秸秆灰的使用具有资源再利用的效果,符合环保性的理念,膨润土的改性中采用改性液浇注,改性液能够将膨润土形成孔洞结构,从而使秸秆灰进入到膨润土中,最后经过微球乳液封孔,从而制备的材料具有很强的专一吸附能力。
Description
技术领域
本发明涉及铜氰废水处理技术领域,具体涉及一种矿山铜氰废水高效无害化处理方法。
背景技术
氰化物提金已有百年历史,至今还没有一种适宜的浸金溶剂能够代替,因此,未来几十年氰化提金工艺在黄金生产领域仍将占主导地位。随着黄金工业的快速发展,简单易处理金矿资源越来越少,含铜难处理金矿资源已成为黄金生产的主要原料之一。然而,含铜金矿采用氰化提金工艺处理时,会产生大量总铜、总氰浓度均为70~150mg/L的低浓度含铜氰废水,如果该废水处理不当或不处理直接外排,势必对环境特别是水资源造成污染,给人类健康、动植物以及整个生态***造成严重危害。
现有铜氰废水处理中虽可起到处理效果,但处理效率不高,不能有效起到处理效果,中国专利文献CN106219807B公开了一种矿山低浓度含铜氰废水的综合处理方法,操作步骤和工艺参数如下:第一步、Ⅰ段除氰、铜:将矿山低浓度含铜氰废水送入带机械搅拌的一级反应槽中,同时向一级反应槽中加入含铜硫化合物渣的除氰剂A进行Ⅰ段除氰、铜反应,反应时间90~180min,反应过程中控制溶液pH值为9~10,反应结束后得到Ⅰ段除氰、铜的渣浆1,并在一级反应槽的渣浆出口处加入聚丙烯酰胺絮凝剂;第二步、Ⅰ段固液分离:加入聚丙烯酰胺絮凝剂后的Ⅰ段除氰、铜的渣浆1自流至浓密机1进行Ⅰ段浓密沉降,得到Ⅰ段浓密沉降底流和Ⅰ段浓密沉降溢流,该专利文献虽可起到对铜氰废水处理,但不同的技术方案处理效果,因而仍需进一步改善处理。
发明内容
本发明的目的在于提供一种矿山铜氰废水高效无害化处理方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:
一种矿山铜氰废水高效无害化处理方法,包括以下步骤:
步骤一,改性秸秆灰的制备:将秸秆灰加入到去离子水中超声分散30-40min,超声功率为300-400W,然后再依次加入氯化铁、氯化铝继续搅拌20-30min,搅拌转速为500-1000r/min,随后再加入磷酸,调节pH至5.0-6.0,然后静置20-30min,静置结束,再离心、干燥,然后与硅烷偶联剂KH560煮沸1-2h,煮沸结束,然后加入硅酸铝,继续调节pH值至4.5-5.5,随后再过滤、洗涤、干燥,即得改性秸秆灰;
步骤二,改性膨润土的制备:将膨润土先置于煅烧炉中进行煅烧20-30min,煅烧温度为1200-1500℃,随后采用改性液浇注,浇注速率为1L/min,浇注结束,冷却,再热处理,最后经过Ga+离子进行辐射处理,最后得到改性膨润土;
步骤三,共混体系的制备:将改性膨润土、改性秸秆灰加入到聚苯乙烯微球乳液中,然后再加入聚乙烯蜡、木质素,先以300-500r/min的转速搅拌20min,然后再加入二茂铁助剂,最后以1000-2000r/min的转速继续搅拌1-2h,搅拌结束,于60-70℃下干燥1-2h,干燥结束,置于蒸汽***机物料仓中,通入饱和蒸汽,进行***处理;
步骤四,吸附剂的制备:将蒸汽***处理的原料再经过电晕处理,电晕处理结束,再于20-30Mpa的压力下静置10-20min,即得吸附剂;
步骤五:铜氰废水处理:将步骤四制备的吸附剂加入到铜氰废水中,然后以100-200r/min的转速搅拌40-50min,搅拌结束,即可。
优选地,所述改性液的制备方法为:将硅灰石粉按照重量比1:2加入到硅溶胶中,随后再向其中加入稀土助剂,最后再加入十二烷基磺酸钠,然后以200-300r/min的转速搅拌30-40min,搅拌结束得到改性液。
优选地,所述稀土助剂的制备方法为将稀土氯化镧加入到硫酸溶液中,然后以200r/min的转速继续搅拌30-40min,搅拌结束,得到稀土助剂。
优选地,所述步骤二中热处理的具体步骤为:先将膨润土升温至700-800℃,保温20-30min,然后再以5℃/min的速率降温至500℃,然后继续保温35-45min,最后立即冷却至室温,即可。
优选地,所述Ga+离子进行辐射处理的辐照功率为300-500W,辐照时间总时间为20-30min,具体辐照每隔2min辐照5min。
优选地,所述步骤三中蒸汽***处理的***压力为2-5Mpa。
优选地,所述步骤三中蒸汽***处理的***压力为3.5Mpa。
优选地,所述电晕处理功率的功率为5-10Kw,处理温度为20-50℃,处理时间为10-20min。
与现有技术相比,本发明具有如下的有益效果:
本发明采用的改性秸秆灰通过秸秆灰在氯化铁、氯化铝等原料的处理下,然后与改性膨润土复合,最后再经过共混体系的建立,秸秆灰的使用具有资源再利用的效果,符合环保性的理念,膨润土的改性中采用改性液浇注,改性液能够将膨润土形成孔洞结构,从而使秸秆灰进入到膨润土中,最后经过微球乳液封孔,从而制备的材料具有很强的专一吸附能力;从实施例1-3及对比例1-3得出,本发明实施例3中的铜回收率为95.2%,对比例3中的铜回收率为71.3%,实施例3相对于对比例3提高了13.9%,实施例3中外排水总氰的含量为0.091mg/L,而对比例3为0.35mg/L,可知本发明对铜具有显著回收效果;同时能够起到无害化处理效果。
具体实施方式
下面结合具体实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1:
本实施例的一种矿山铜氰废水高效无害化处理方法,包括以下步骤:
步骤一,改性秸秆灰的制备:将秸秆灰加入到去离子水中超声分散30min,超声功率为300W,然后再依次加入氯化铁、氯化铝继续搅拌20min,搅拌转速为500r/min,随后再加入磷酸,调节pH至5.0,然后静置20-30min,静置结束,再离心、干燥,然后与硅烷偶联剂KH560煮沸1h,煮沸结束,然后加入硅酸铝,继续调节pH值至4.5,随后再过滤、洗涤、干燥,即得改性秸秆灰;
步骤二,改性膨润土的制备:将膨润土先置于煅烧炉中进行煅烧20min,煅烧温度为1200℃,随后采用改性液浇注,浇注速率为1L/min,浇注结束,冷却,再热处理,最后经过Ga+离子进行辐射处理,最后得到改性膨润土;
步骤三,共混体系的制备:将改性膨润土、改性秸秆灰加入到聚苯乙烯微球乳液中,然后再加入聚乙烯蜡、木质素,先以300r/min的转速搅拌20min,然后再加入二茂铁助剂,最后以1000r/min的转速继续搅拌1h,搅拌结束,于60℃下干燥1h,干燥结束,置于蒸汽***机物料仓中,通入饱和蒸汽,进行***处理;
步骤四,吸附剂的制备:将蒸汽***处理的原料再经过电晕处理,电晕处理结束,再于20Mpa的压力下静置10min,即得吸附剂;
步骤五:铜氰废水处理:将步骤四制备的吸附剂加入到铜氰废水中,然后以100r/min的转速搅拌40min,搅拌结束,即可。
本实施例的改性液的制备方法为:将硅灰石粉按照重量比1:2加入到硅溶胶中,随后再向其中加入稀土助剂,最后再加入十二烷基磺酸钠,然后以200r/min的转速搅拌30min,搅拌结束得到改性液。
本实施例的稀土助剂的制备方法为将稀土氯化镧加入到硫酸溶液中,然后以200r/min的转速继续搅拌30min,搅拌结束,得到稀土助剂。
本实施例的步骤二中热处理的具体步骤为:先将膨润土升温至700℃,保温20min,然后再以5℃/min的速率降温至500℃,然后继续保温35-45min,最后立即冷却至室温,即可。
本实施例的Ga+离子进行辐射处理的辐照功率为300W,辐照时间总时间为20min,具体辐照每隔2min辐照5min。
本实施例的步骤三中蒸汽***处理的***压力为2Mpa。
本实施例的电晕处理功率的功率为5Kw,处理温度为20℃,处理时间为10min。
实施例2:
本实施例的一种矿山铜氰废水高效无害化处理方法,包括以下步骤:
步骤一,改性秸秆灰的制备:将秸秆灰加入到去离子水中超声分散40min,超声功率为400W,然后再依次加入氯化铁、氯化铝继续搅拌30min,搅拌转速为1000r/min,随后再加入磷酸,调节pH至6.0,然后静置30min,静置结束,再离心、干燥,然后与硅烷偶联剂KH560煮沸2h,煮沸结束,然后加入硅酸铝,继续调节pH值至5.5,随后再过滤、洗涤、干燥,即得改性秸秆灰;
步骤二,改性膨润土的制备:将膨润土先置于煅烧炉中进行煅烧30min,煅烧温度为1500℃,随后采用改性液浇注,浇注速率为1L/min,浇注结束,冷却,再热处理,最后经过Ga+离子进行辐射处理,最后得到改性膨润土;
步骤三,共混体系的制备:将改性膨润土、改性秸秆灰加入到聚苯乙烯微球乳液中,然后再加入聚乙烯蜡、木质素,先以500r/min的转速搅拌20min,然后再加入二茂铁助剂,最后以2000r/min的转速继续搅拌2h,搅拌结束,于70℃下干燥2h,干燥结束,置于蒸汽***机物料仓中,通入饱和蒸汽,进行***处理;
步骤四,吸附剂的制备:将蒸汽***处理的原料再经过电晕处理,电晕处理结束,再于30Mpa的压力下静置20min,即得吸附剂;
步骤五:铜氰废水处理:将步骤四制备的吸附剂加入到铜氰废水中,然后以200r/min的转速搅拌50min,搅拌结束,即可。
本实施例的改性液的制备方法为:将硅灰石粉按照重量比1:2加入到硅溶胶中,随后再向其中加入稀土助剂,最后再加入十二烷基磺酸钠,然后以300r/min的转速搅拌40min,搅拌结束得到改性液。
本实施例的稀土助剂的制备方法为将稀土氯化镧加入到硫酸溶液中,然后以200r/min的转速继续搅拌40min,搅拌结束,得到稀土助剂。
本实施例的步骤二中热处理的具体步骤为:先将膨润土升温至800℃,保温30min,然后再以5℃/min的速率降温至500℃,然后继续保温45min,最后立即冷却至室温,即可。
本实施例的Ga+离子进行辐射处理的辐照功率为500W,辐照时间总时间为30min,具体辐照每隔2min辐照5min。
本实施例的步骤三中蒸汽***处理的***压力为5Mpa。
本实施例的电晕处理功率的功率为10Kw,处理温度为50℃,处理时间为20min。
实施例3:
本实施例的一种矿山铜氰废水高效无害化处理方法,包括以下步骤:
步骤一,改性秸秆灰的制备:将秸秆灰加入到去离子水中超声分散35min,超声功率为350W,然后再依次加入氯化铁、氯化铝继续搅拌20-30min,搅拌转速为500-1000r/min,随后再加入磷酸,调节pH至5.4,然后静置25min,静置结束,再离心、干燥,然后与硅烷偶联剂KH560煮沸1-2h,煮沸结束,然后加入硅酸铝,继续调节pH值至5.0,随后再过滤、洗涤、干燥,即得改性秸秆灰;
步骤二,改性膨润土的制备:将膨润土先置于煅烧炉中进行煅烧25min,煅烧温度为1350℃,随后采用改性液浇注,浇注速率为1L/min,浇注结束,冷却,再热处理,最后经过Ga+离子进行辐射处理,最后得到改性膨润土;
步骤三,共混体系的制备:将改性膨润土、改性秸秆灰加入到聚苯乙烯微球乳液中,然后再加入聚乙烯蜡、木质素,先以400r/min的转速搅拌20min,然后再加入二茂铁助剂,最后以1500r/min的转速继续搅拌1-2h,搅拌结束,于65℃下干燥1.5h,干燥结束,置于蒸汽***机物料仓中,通入饱和蒸汽,进行***处理;
步骤四,吸附剂的制备:将蒸汽***处理的原料再经过电晕处理,电晕处理结束,再于25Mpa的压力下静置15min,即得吸附剂;
步骤五:铜氰废水处理:将步骤四制备的吸附剂加入到铜氰废水中,然后以150r/min的转速搅拌45min,搅拌结束,即可。
本实施例的改性液的制备方法为:将硅灰石粉按照重量比1:2加入到硅溶胶中,随后再向其中加入稀土助剂,最后再加入十二烷基磺酸钠,然后以250r/min的转速搅拌35min,搅拌结束得到改性液。
本实施例的稀土助剂的制备方法为将稀土氯化镧加入到硫酸溶液中,然后以200r/min的转速继续搅拌30-40min,搅拌结束,得到稀土助剂。
本实施例的步骤二中热处理的具体步骤为:先将膨润土升温至750℃,保温25min,然后再以5℃/min的速率降温至500℃,然后继续保温40min,最后立即冷却至室温,即可。
本实施例的Ga+离子进行辐射处理的辐照功率为400W,辐照时间总时间为25min,具体辐照每隔2min辐照5min。
本实施例的步骤三中蒸汽***处理的***压力为3.5Mpa。
本实施例的电晕处理功率的功率为7.5Kw,处理温度为35℃,处理时间为15min。
对比例1.
与实施例3的材料及制备工艺基本相同,唯有不同的是膨润土未改性处理。
对比例2.
与实施例3的材料及制备工艺基本相同,唯有不同的是共混体系的制备中未加入木质素。
对比例3.
与实施例3的材料及制备工艺基本相同,唯有不同的是采用常规原料进行处理。
实施例1-3及对比例1-3性能测试结果如下
从实施例1-3及对比例1-3得出,本发明实施例3中的铜回收率为95.2%,对比例3中的铜回收率为71.3%,实施例3相对于对比例3提高了13.9%,实施例3中外排水总氰的含量为0.091mg/L,而对比例3为0.35mg/L,可知本发明对铜具有显著回收效果;同时能够起到无害化处理效果。
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。
Claims (8)
1.一种矿山铜氰废水高效无害化处理方法,其特征在于,包括以下步骤:
步骤一,改性秸秆灰的制备:将秸秆灰加入到去离子水中超声分散30-40min,超声功率为300-400W,然后再依次加入氯化铁、氯化铝继续搅拌20-30min,搅拌转速为500-1000r/min,随后再加入磷酸,调节pH至5.0-6.0,然后静置20-30min,静置结束,再离心、干燥,然后与硅烷偶联剂KH560煮沸1-2h,煮沸结束,然后加入硅酸铝,继续调节pH值至4.5-5.5,随后再过滤、洗涤、干燥,即得改性秸秆灰;
步骤二,改性膨润土的制备:将膨润土先置于煅烧炉中进行煅烧20-30min,煅烧温度为1200-1500℃,随后采用改性液浇注,浇注速率为1L/min,浇注结束,冷却,再热处理,最后经过Ga+离子进行辐射处理,最后得到改性膨润土;
步骤三,共混体系的制备:将改性膨润土、改性秸秆灰加入到聚苯乙烯微球乳液中,然后再加入聚乙烯蜡、木质素,先以300-500r/min的转速搅拌20min,然后再加入二茂铁助剂,最后以1000-2000r/min的转速继续搅拌1-2h,搅拌结束,于60-70℃下干燥1-2h,干燥结束,置于蒸汽***机物料仓中,通入饱和蒸汽,进行***处理;
步骤四,吸附剂的制备:将蒸汽***处理的原料再经过电晕处理,电晕处理结束,再于20-30Mpa的压力下静置10-20min,即得吸附剂;
步骤五:铜氰废水处理:将步骤四制备的吸附剂加入到铜氰废水中,然后以100-200r/min的转速搅拌40-50min,搅拌结束,即可。
2.根据权利要求1所述的一种矿山铜氰废水高效无害化处理方法,其特征在于,所述改性液的制备方法为:将硅灰石粉按照重量比1:2加入到硅溶胶中,随后再向其中加入稀土助剂,最后再加入十二烷基磺酸钠,然后以200-300r/min的转速搅拌30-40min,搅拌结束得到改性液。
3.根据权利要求2所述的一种矿山铜氰废水高效无害化处理方法,其特征在于,所述稀土助剂的制备方法为将稀土氯化镧加入到硫酸溶液中,然后以200r/min的转速继续搅拌30-40min,搅拌结束,得到稀土助剂。
4.根据权利要求1所述的一种矿山铜氰废水高效无害化处理方法,其特征在于,所述步骤二中热处理的具体步骤为:先将膨润土升温至700-800℃,保温20-30min,然后再以5℃/min的速率降温至500℃,然后继续保温35-45min,最后立即冷却至室温,即可。
5.根据权利要求1所述的一种矿山铜氰废水高效无害化处理方法,其特征在于,所述Ga+离子进行辐射处理的辐照功率为300-500W,辐照时间总时间为20-30min,具体辐照每隔2min辐照5min。
6.根据权利要求1所述的一种矿山铜氰废水高效无害化处理方法,其特征在于,所述步骤三中蒸汽***处理的***压力为2-5Mpa。
7.根据权利要求6所述的一种矿山铜氰废水高效无害化处理方法,其特征在于,所述步骤三中蒸汽***处理的***压力为3.5Mpa。
8.根据权利要求1所述的一种矿山铜氰废水高效无害化处理方法,其特征在于,所述电晕处理功率的功率为5-10Kw,处理温度为20-50℃,处理时间为10-20min。
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Denomination of invention: An efficient and harmless treatment method for copper cyanide wastewater in mines Granted publication date: 20220218 Pledgee: Tongling Branch of Postal Savings Bank of China Ltd. Pledgor: Anhui jiaochong Mining Co.,Ltd. Registration number: Y2024980009604 |