CN103420430B - Polyaluminum ferrous chloride purifier and production method thereof - Google Patents
Polyaluminum ferrous chloride purifier and production method thereof Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title abstract description 18
- 229960002089 ferrous chloride Drugs 0.000 title abstract 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 title abstract 3
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims abstract description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000002699 waste material Substances 0.000 claims abstract description 17
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000005554 pickling Methods 0.000 claims abstract description 12
- 230000032683 aging Effects 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 36
- 239000004411 aluminium Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 21
- UMBHMPIBEVCLOX-UHFFFAOYSA-K [Si](O)(O)(O)O.[Cl-].[Al+3].[Cl-].[Cl-] Chemical compound [Si](O)(O)(O)O.[Cl-].[Al+3].[Cl-].[Cl-] UMBHMPIBEVCLOX-UHFFFAOYSA-K 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 13
- 238000001556 precipitation Methods 0.000 claims description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000007800 oxidant agent Substances 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract 2
- 239000001110 calcium chloride Substances 0.000 abstract 2
- 229910001628 calcium chloride Inorganic materials 0.000 abstract 2
- 235000011148 calcium chloride Nutrition 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 14
- 235000011167 hydrochloric acid Nutrition 0.000 description 12
- 239000000047 product Substances 0.000 description 11
- 238000000746 purification Methods 0.000 description 10
- 235000021110 pickles Nutrition 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003929 acidic solution Substances 0.000 description 6
- -1 oxygenant Chemical compound 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- UPLPHRJJTCUQAY-WIRWPRASSA-N 2,3-thioepoxy madol Chemical compound C([C@@H]1CC2)[C@@H]3S[C@@H]3C[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@](C)(O)[C@@]2(C)CC1 UPLPHRJJTCUQAY-WIRWPRASSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a polyaluminum ferrous chloride purifier and a production method thereof. The production method using the following raw materials includes the steps of firstly, feeding technical hydrochloric acid and aluminum sludge into a sealed reaction vessel, and stirring at normal temperature and pressure; secondly, adding CaCl2 to the solution obtained by the first step, stirring at normal temperature and pressure until complete reaction, and filtering to remove sedimentation; thirdly, adding steel acid pickling waste liquor into the solution obtained after filtering of the second step, and well mixing by stirring; fourthly, adding oxidant to the solution obtained by the third step; fifthly, adding calcium aluminate powder to the solution obtained by the fourth step, allowing for reaction, and filtering and aging to obtain the polyaluminum ferrous chloride purifier. The production method has the advantages that CaCl2 is added to control contents of SO42- in the product so as to prevent SO42- from reacting with the subsequently added calcium aluminate powder, and product stability is increased.
Description
Technical field
The invention belongs to water purification agent field, be specifically related to a kind of poly aluminium chloride silicic acid and manufacture method thereof.
Background technology
In the surface treatment process of Iron And Steel Industry and aluminium section bar processing industry, in order to improve the performance of steel, aluminium shape surface, usually need to utilize mineral acid to carry out corrosion treatment, to remove the oxide compound on surface.Surface acid-washing process can produce a large amount of iron ion bearing scrap acid solution and Aluminiferous waste slag, these trade wastes cannot recycle for steel and aluminium section bar enterprise itself, if can not get effectively disposing to become secondary pollution source, being discharged into physical environment can havoc ecotope.How effectively to dispose and to utilize spent pickle liquor and aluminium body refuse, be steel and aluminium section bar enterprise problem in the urgent need to address always.To employ new technology means, trade waste is carried out a kind of new direction, new trend that resource utilization is just becoming environmental improvement.
Can produce a large amount of containing FeCl at steel surface treating processes hydrochloric acid soln corrosion steel surface
2spent pickle liquor, this spent pickle liquor contains the FeCl of 8 ~ 10wt%
2and a small amount of hydrochloric acid.In aluminium shape surface process, use sulfuric acid washing, because in solution, aluminium composition is lower, adopt in alkali and after processed finally produces white aluminium body refuse, the activated alumina containing 10 ~ 20wt% in aluminium body refuse more.If iron and steel pickling waste liquid and aluminium body refuse can be applied to the manufacture of the polychloride ferro-aluminum of water treatment agent, will significantly reduce the production cost of water purification agent, solve the problem of iron and steel and aluminium section bar enterprise waste liquid and refuse environmental pollution simultaneously.
Utilize spent pickle liquor at present, patent that aluminium body refuse prepares liquid aluminium polychloride silicic acid and bibliographical information more, as patent CN103043759A utilizes spent pickle liquor and aluminum feedstock, adopt oxidation acid-soluble, add the polymerization of NaOH alkali tune again and prepare water purification agent, but NaOH alkalescence is too strong, the process of adding is easy to be formed with ferro-aluminum ion precipitate, and product basicity is low, affects flocculating effect.Patent CN102774889A adopts alkaline residue, hydrochloric acid, molysite, oxygenant, calcium aluminate powder to be that aluminium iron polychloride prepared by raw material, does not consider in alkaline residue containing a large amount of SO
4 2-with Ca in calcium aluminate powder
2+form the drawback of a large amount of precipitation, cause product instability to be easy to layering, finally affect the flocculating property of product, simultaneous reactions process produces a large amount of precipitation even may cause reaction tank material gel, cannot complete water purification agent polymerization processes for preparing.Patent CN1948156A utilizes aluminium mud, hydrochloric acid, manufacturing polyaluminium chloride with calcium aluminate powder, does not consider SO in aluminium mud equally
4 2-on the impact of production technique and product performance.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of poly aluminium chloride silicic acid and manufacture method thereof, by adding CaCl in the fabrication process
2control SO in product
4 2-content, avoids SO
4 2-react with the follow-up calcium aluminate powder added, improve product stability.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of poly aluminium chloride silicic acid, adopts following raw material and step preparation:
(1) technical hydrochloric acid and aluminium body refuse are dropped into closed reaction vessel, normal temperature and pressure stirring reaction;
(2) CaCl is added to step (1) gained solution
2, after normal temperature and pressure stirring reaction, cross and filter precipitation;
(3) iron and steel pickling waste liquid is added, stirring and evenly mixing in gained solution after filtering to step (2);
(4) in step (3) gained solution, oxygenant is added, stirring and evenly mixing;
(5) add calcium aluminate powder to step (4) gained solution, after reaction, after filtration, ageing, obtain poly aluminium chloride silicic acid of the present invention
Preferably, this poly aluminium chloride silicic acid adopts following raw material and step preparation:
(1) by weight, 65-135 part technical hydrochloric acid and 100 parts of aluminium body refuses are dropped into closed reaction vessel, normal temperature and pressure stirring reaction 0.5-1h;
(2) 32-64 part CaCl is added to step (1) gained solution
2, after normal temperature and pressure stirring reaction, cross and filter precipitation;
(3) 10-109 part iron and steel pickling waste liquid is added, stirring and evenly mixing in gained solution after filtering to step (2);
(4) in step (3) gained solution, add oxygenant, stir;
(5) add 212-400 part calcium aluminate powder to step (4) gained solution, reaction 3-4h, obtains poly aluminium chloride silicic acid of the present invention after filtering ageing.
Described oxygenant is sodium chlorate or hydrogen peroxide.
Wherein, above-mentioned aluminium body refuse for use sulfuric acid washing in aluminium shape surface process, then adopts in alkali and the final white mass produced after processed, the activated alumina containing 10 ~ 20wt% in aluminium body refuse.
Above-mentioned iron and steel pickling waste liquid for corrode steel surface with hydrochloric acid soln in steel surface treating processes, generation containing a large amount of FeCl
2spent pickle liquor, this spent pickle liquor contains the FeCl of 8 ~ 10wt%
2and a small amount of hydrochloric acid.
In actual production process, in aluminium body refuse, aluminum oxide is first by enough dissolving with hydrochloric acid, and colloidal state aluminium hydroxide is dissolved as AlCl
3solution, aluminium enters solution with ionic state, then adopts " technical grade polymerize aluminum chloride standard GB/T/T22627-2008 " method to detect aluminium content; SO
4 2-content detection then measures, according to SO with reference to GB11899-89 weighting method
4 2-content adds enough CaCl
2, allow SO
4 2-react with calcium ion and form CaSO
4precipitation is separated from solution; In iron and steel pickling waste liquid, iron ion content then measures with reference to " GBT1621-1993 industrial chlorinations is ferrous " oxidation reduction process.
Optimum ferro-aluminum ratio can be determined, to reach best water treatment efficiency according to different sewage water quality characteristics in poly aluminium chloride silicic acid preparation process.In product of the present invention, iron aluminium quality is 1:(1-10 than span of control).
Calcium aluminate powder is alkaline matter, can H in neutralization solution with ferro-aluminum acidic mixed solution reaction
+ion, and impel ferro-aluminum ion that hydrolysis occurs further to produce more Polycarboxy-heterocyclic compound, improve poly aluminium chloride silicic acid product basicity to 50-90% scope, ensure water purification agent water treatment coagulation effect.
The invention has the beneficial effects as follows:
The poly aluminium chloride silicic acid that the present invention produces, by adding CaCl in the fabrication process
2control SO in product
4 2-content, avoids SO
4 2-react with the follow-up calcium aluminate powder added, improve product stability; Industrial waste resource utilization, recycle is turned waste into wealth, and reduces water purification agent production process to the exploitation of Mineral resources, reduces water purification agent manufacturing cost; Simplify water purification agent product manufacture flow process, reduce water purification agent and manufacture energy consumption, a kind of new preparation process technology is provided; Compare improve water treatment coagulating sedimentation effect with traditional Tai-Ace S 150, polyaluminium chloride water purification agent.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.
Embodiment 1
(1) by weight, get 65 parts of technical hydrochloric acids and drop into airtight acid tolerance response container, under whipped state, evenly add 100 parts of aluminium body refuses, normal temperature and pressure stirring reaction 0.5-1h, obtain containing Na after reactants dissolved is complete
2sO
4alCl
3acidic solution;
(2) 32 parts of CaCl are added to step (1) gained solution
2, stir under normal temperature and pressure and make to react completely, cross and filter CaSO
4precipitation, obtains AlCl
3acidic solution;
(3) in step (2) gained solution, add 10 parts of iron and steel pickling waste liquids, stir, mix rear formation AlCl
3and FeCl
2mixed acid solution;
(4) in step (3) gained solution, add oxygenant sodium chlorate, its add-on is with by Fe all in solution
2+be oxidized to Fe
3+be as the criterion, obtain AlCl
3and FeCl
3mixed acid solution;
(5) add 212 parts of calcium aluminate powder for water treatment agents to step (4) gained solution, acid-soluble polyreaction 3-4h, after filtering ageing, obtain poly aluminium chloride silicic acid of the present invention.
Embodiment 2
(1) by weight, get 100 parts of technical hydrochloric acids and drop into airtight acid tolerance response container, under whipped state, evenly add 100 parts of aluminium body refuses, normal temperature and pressure stirring reaction 0.5-1h, obtain containing Na after reactants dissolved is complete
2sO
4alCl
3acidic solution;
(2) 48 parts of CaCl are added to step (1) gained solution
2, stir under normal temperature and pressure and make to react completely, cross and filter CaSO
4precipitation, obtains AlCl
3acidic solution;
(3) in step (2) gained solution, add 60 parts of iron and steel pickling waste liquids, stir, mix rear formation AlCl
3and FeCl
2mixed acid solution;
(4) in step (3) gained solution, add oxidants hydrogen peroxide, its add-on is with by Fe all in solution
2+be oxidized to Fe
3+be as the criterion, obtain AlCl
3and FeCl
3mixed acid solution;
(5) add 305 parts of calcium aluminate powder for water treatment agents to step (4) gained solution, acid-soluble polyreaction 3-4h, after filtering ageing, obtain poly aluminium chloride silicic acid of the present invention.
Embodiment 3
(1) by weight, get 135 parts of technical hydrochloric acids and drop into airtight acid tolerance response container, under whipped state, evenly add 100 parts of aluminium body refuses, normal temperature and pressure stirring reaction 0.5-1h, obtain containing Na after reactants dissolved is complete
2sO
4alCl
3acidic solution;
(2) 64 parts of CaCl are added to step (1) gained solution
2, stir under normal temperature and pressure and make to react completely, cross and filter CaSO
4precipitation, obtains AlCl
3acidic solution;
(3) in step (2) gained solution, add 109 parts of iron and steel pickling waste liquids, stir, mix rear formation AlCl
3and FeCl
2mixed acid solution;
(4) in step (3) gained solution, add oxidants hydrogen peroxide, its add-on is with by Fe all in solution
2+be oxidized to Fe
3+be as the criterion, obtain AlCl
3and FeCl
3mixed acid solution;
(5) add 400 parts of calcium aluminate powder for water treatment agents to step (4) gained solution, acid-soluble polyreaction 3-4h, after filtering ageing, obtain poly aluminium chloride silicic acid of the present invention.
Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.After the content of having read the present invention's instruction, those skilled in the art can do various conversion or amendment with any same or similar means to the present invention, and these equivalent form of values fall within protection scope of the present invention equally.
Claims (5)
1. prepare a method for poly aluminium chloride silicic acid, it is characterized in that being made up of following steps:
(1) technical hydrochloric acid and aluminium body refuse are dropped into closed reaction vessel, normal temperature and pressure stirring reaction;
(2) CaCl is added to step (1) gained solution
2, after normal temperature and pressure stirring reaction, cross and filter precipitation;
(3) iron and steel pickling waste liquid is added, stirring and evenly mixing in gained solution after filtering to step (2);
(4) in step (3) gained solution, oxygenant is added, stirring and evenly mixing;
(5) add calcium aluminate powder to step (4) gained solution, after reaction, after filtration, ageing, obtain poly aluminium chloride silicic acid.
2. method according to claim 1, is characterized in that being made up of following steps:
(1) by weight, 65-135 part technical hydrochloric acid and 100 parts of aluminium body refuses are dropped into closed reaction vessel, normal temperature and pressure stirring reaction 0.5-1h;
(2) 32-64 part CaCl is added to step (1) gained solution
2, after normal temperature and pressure stirring reaction, cross and filter precipitation;
(3) 10-109 part iron and steel pickling waste liquid is added, stirring and evenly mixing in gained solution after filtering to step (2);
(4) in step (3) gained solution, oxygenant is added, stirring and evenly mixing;
(5) add 212-400 part calcium aluminate powder to step (4) gained solution, reaction 3-4h, obtains poly aluminium chloride silicic acid after filtering ageing.
3. method according to claim 1 and 2, is characterized in that: the oxygenant in described step (4) is sodium chlorate or hydrogen peroxide.
4. method according to claim 1 and 2, is characterized in that: described aluminium body refuse is containing the aluminum oxide of 10-20wt%.
5. method according to claim 1 and 2, is characterized in that: described iron and steel pickling waste liquid contains the FeCl of 8-10wt%
2.
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| CN104495994A (en) * | 2014-12-04 | 2015-04-08 | 常州大学 | Method for improving filter-pressing performance of particles in poly-aluminum ferric chloride |
| CN105217752A (en) * | 2015-09-10 | 2016-01-06 | 吴建华 | The preparation method of aluminium iron sulfate solution |
| CN105152295A (en) * | 2015-09-10 | 2015-12-16 | 吴建华 | Preparation method of aluminum ferric chloride solution |
| CN105236531A (en) * | 2015-09-10 | 2016-01-13 | 吴建华 | Poly aluminum chloride preparation method |
| CN105217754A (en) * | 2015-09-28 | 2016-01-06 | 江苏永葆环保科技股份有限公司 | A kind of method fully utilizing ferro-aluminum surface acid-washing spent acid waste residue and prepare compound coagulant |
| CN105776465B (en) * | 2016-03-04 | 2018-04-10 | 江苏永葆环保科技股份有限公司 | A kind of compound coagulant for treatment of dyeing wastewater and preparation method thereof |
| CN106430321B (en) * | 2016-08-31 | 2018-03-23 | 海南宜净环保股份有限公司 | Method for synthesizing polyaluminum ferric chloride |
| CN106395917B (en) * | 2016-12-06 | 2017-11-10 | 长江大学 | A kind of PAFC fluid product and preparation method thereof |
| CN108557831B (en) * | 2018-05-29 | 2021-06-08 | 西南科技大学 | Method for preparing silicon micropowder and coproducing polyaluminium chloride by leaching quartz processing sludge with hydrochloric acid |
| CN109292849A (en) * | 2018-11-07 | 2019-02-01 | 张家界贵友环保材料科技有限公司 | A kind of polyaluminium chloride water purification agent and preparation method thereof containing rare earth element |
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