CN108545982A - A kind of cement hexavalent chrome reduction agent - Google Patents
A kind of cement hexavalent chrome reduction agent Download PDFInfo
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- CN108545982A CN108545982A CN201810453423.7A CN201810453423A CN108545982A CN 108545982 A CN108545982 A CN 108545982A CN 201810453423 A CN201810453423 A CN 201810453423A CN 108545982 A CN108545982 A CN 108545982A
- Authority
- CN
- China
- Prior art keywords
- cement
- hexavalent chrome
- chrome reduction
- agent
- salt
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- 239000004568 cement Substances 0.000 title claims abstract description 83
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 229910000410 antimony oxide Inorganic materials 0.000 claims abstract description 15
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims abstract description 15
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims abstract description 12
- 239000003381 stabilizer Substances 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 13
- WGCNASOHLSPBMP-UHFFFAOYSA-N Glycolaldehyde Chemical compound OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 8
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Chemical compound O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 7
- 239000011790 ferrous sulphate Substances 0.000 claims description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 7
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 229940099596 manganese sulfate Drugs 0.000 claims description 6
- 235000007079 manganese sulphate Nutrition 0.000 claims description 6
- 239000011702 manganese sulphate Substances 0.000 claims description 6
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 6
- 239000001119 stannous chloride Substances 0.000 claims description 6
- 235000011150 stannous chloride Nutrition 0.000 claims description 6
- RCIVOBGSMSSVTR-UHFFFAOYSA-L stannous sulfate Chemical compound [SnH2+2].[O-]S([O-])(=O)=O RCIVOBGSMSSVTR-UHFFFAOYSA-L 0.000 claims description 6
- 229910000375 tin(II) sulfate Inorganic materials 0.000 claims description 6
- 229920005610 lignin Polymers 0.000 claims description 5
- 229920001732 Lignosulfonate Polymers 0.000 claims description 4
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 4
- 229940071125 manganese acetate Drugs 0.000 claims description 4
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 claims description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 4
- 229920002866 paraformaldehyde Polymers 0.000 claims description 4
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 claims description 3
- MNQZXJOMYWMBOU-VKHMYHEASA-N D-glyceraldehyde Chemical compound OC[C@@H](O)C=O MNQZXJOMYWMBOU-VKHMYHEASA-N 0.000 claims description 2
- 229910021380 Manganese Chloride Inorganic materials 0.000 claims description 2
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 claims description 2
- 235000002867 manganese chloride Nutrition 0.000 claims description 2
- 239000011565 manganese chloride Substances 0.000 claims description 2
- 229940099607 manganese chloride Drugs 0.000 claims description 2
- 239000011651 chromium Substances 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000001988 toxicity Effects 0.000 abstract 1
- 231100000419 toxicity Toxicity 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 41
- 150000002500 ions Chemical class 0.000 description 11
- 238000000498 ball milling Methods 0.000 description 8
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 150000002696 manganese Chemical class 0.000 description 5
- 239000003082 abrasive agent Substances 0.000 description 4
- 150000001299 aldehydes Chemical class 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 150000001845 chromium compounds Chemical class 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 230000005778 DNA damage Effects 0.000 description 1
- 231100000277 DNA damage Toxicity 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 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 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 238000013456 study Methods 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0096—Reducing agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of cement hexavalent chrome reduction agent, belong to cement additive field.Reducing agent of the present invention is prepared by following raw material, and each raw material and its mass percent are：Tin salt 10%~20%, ferrous salt 25%~40%, manganous salt 15%~25%, antimony oxide 5%~15%, organic reducing agent 10%~20%, stabilizer 5%~10%.The hexavalent chrome reduction agent of the present invention is applied to manufacture of cement industry, can be effectively trivalent chromium by the hexavalent chrome reduction in cement, to reduce the toxicity of cement；And the cement hexavalent chrome reduction agent reduction effect of the present invention is good, physical chemical characteristics are stable, reduction effect is stablized.
Description
Technical field
The present invention relates to a kind of cement hexavalent chrome reduction agent, belong to cement additive technical field.
Background technology
Early in l950, Europe finds that soluble chromium compound can make human body suffer from serious cement dermatitis in cement, lead
It causes cutaneous pain, fester.Secondly, micro chromium compound can enter internal through alimentary canal, respiratory tract or skin, and gently then damage is exhaled
It inhales and digestive system normal function, canceration that is heavy then causing organ.Moreover, Cr VI can interact with DNA, cell is being influenced just
Normal metabolism, and then cause DNA damage or mutation.
Cement products will be contacted inevitably with surrounding mediums such as water, soil in use or after discarded.Therefore,
Cr VI in cement can be dissolved in water through drenching with rain, and subsequently into surface water or permeate the ground, by polluted source and soil, harm
Farmland, or even threaten the ecology on periphery.
The content of chromium is up to 100~300 ppm in cement, wherein the content of 6-valence Cr ions in cement is generally l~30
ppm.But stringent standard or technical criteria have been worked out in countries in the world, as European Union promulgated 2003/53/ on June 18th, 2003
EC is instructed, and is forbidden to use and sells the cement and its mixture that content of 6-valence Cr ions is more than 2ppm.On September 11st, 2015, China's hair
The mandatory standard GB 31893-2015 of content of 6-valence Cr ions in cloth limitation cement《In cement the limitation of water soluble chromium (VI) and
Assay method》, content of 6-valence Cr ions is not greater than 10 ppm in the standard regulation cement.
As economic continues powerful development, China's cement output occupies the first in the world in continuous more than 20 years.But it could not
Recognize, the cement production process in China falls behind relatively, and cement product quality is to be improved, especially water soluble hexavalent chromium content compared with
It is high.Counted according to national cement Product quality and safety Risk Monitoring in 2015, national 31 provinces, municipality directly under the Central Government and autonomous region it is total
In 100 batch cement samples, there are about the content of 6-valence Cr ions of 20 ﹪ cement products to be unsatisfactory for standard limitation requirement, and there are serious safeties
Risk.
A large amount of correlative studys show with suitable reducing agent can the hexavalent chrome reduction in cement at trivalent chromium, from
And the pollution of chromium of cement is reduced or eliminated, and the performance indicator of cement is substantially unaffected.But traditional hexavalent chrome reduction agent is deposited
The reducing power to Cr VI can be lost after being aoxidized such as ferrous sulfate unstable chemcial property in shortcomings；Thiosulfuric acid
The reducing powers such as ammonium, sodium sulfite are limited；It is almost steady by reducing agent although having carried out a large amount of research work with regard to this both at home and abroad
Qualitative and addition cost limitation promotes and applies not successfully.So the novel cement hexavalent chrome reduction agent of exploitation is imperative,
This is also cement manufacturing scientific workers' urgent problem to be solved.
Invention content
In order to solve the deficiencies in the prior art, the present invention provides a kind of cement hexavalent chrome reduction agent, the reducing agent by with
Lower raw material is prepared, and each raw material and its mass percent are：Tin salt 10%~20%, ferrous salt 25%~40%, bivalent manganese
Salt 15%~25%, antimony oxide 5%~15%, organic reducing agent 10%~20%, stabilizer 5%~10%；The quality of all raw materials
The sum of percentage is 100%.
Tin salt of the present invention is what one or both of stannous sulfate, stannous chloride were mixed to get in any proportion
Mixture.
Ferrous salt of the present invention is what one or both of ferrous sulfate, frerrous chloride were mixed to get in any proportion
Mixture.
Manganous salt of the present invention is that one or more of manganese sulfate, manganese chloride, manganese acetate mix in any proportion
Obtained mixture.
Antimony oxide of the present invention is that one or both of antimony oxide, antimony pentoxide mix in any proportion
The mixture arrived.
Organic reducing agent of the present invention is one or more of formaldehyde, acetaldehyde, paraformaldehyde, glyceraldehyde, glycolaldehyde
The mixture being mixed to get in any proportion.
Stabilizer of the present invention be citric acid, lignin, one or both of lignosulfonates in any proportion
The mixture being mixed to get.
The preparation method of cement hexavalent chrome reduction agent of the present invention is：By ferrous salt, tin salt, manganous salt, oxidation
Antimony, organic reducing agent and stabilizer each component sequentially add in roller, are uniformly mixed, and cement Cr VI is obtained after closing packaging
Reducing agent.
The application method of cement hexavalent chrome reduction agent of the present invention is：By clinker ball milling it is good after, by 200 g tons
Addition reducing agent is added into clinker, be uniformly mixed.
Beneficial effects of the present invention：
（1）Reduction effect is good, and content of 6-valence Cr ions is controlled in 2ppm or less in cement after addition.
Contain inorganic tin salts, molysite, manganese salt and aldehydes organic reducing agent in cement hexavalent chrome reduction agent of the present invention, this
There is larger reduction potential between the metal ion and water soluble hexavalent chromium of a little inorganic reducing agents, the energy of reduction reaction occurs
Greatly, reduction rate is high；And aldehydes reducing agent is slow to the reduction rate of Cr VI, but reduction effect is stablized；So inorganic tin salts,
The stability of molysite, the strong reducing property of manganese salt and organic aldehydes combines so that the reduction of cement hexavalent chrome reduction agent of the present invention is imitated
Fruit is more preferably notable, is easy after addition by content of 6-valence Cr ions control in cement in 2ppm or less.
（2）Reducing agent physical and chemical performance is stablized, and reduction effect is stablized.
In addition to containing inorganic tin salts, molysite, the manganese salt for playing reduction effect in cement hexavalent chrome reduction agent of the present invention
Outside organic aldehyde, the antimony oxide for also containing certain component and the stabilizer being made of citric acid, lignin or lignosulfonates,
Antimony oxide and weakly acidic stabilizer can inhibit the hydrolysis of inorganic tin salts, molysite, manganese salt to a certain extent, help to ensure that also
The physical chemical characteristics that former agent plays reduction component during preparing or storing are stablized, it helps ensure that reducing agent addition uses
Reduction stable effect in cement afterwards can keep content of 6-valence Cr ions in cement to be up to 6 in 2ppm or less after adding use
Month or more.
Specific implementation mode
With reference to specific embodiment, invention is further described in detail, but protection scope of the present invention is not limited to
The content.
The raw materials used embodiment of the present invention is technical grade industrial chemicals.
The application method of cement hexavalent chrome reduction agent described in the embodiment of the present invention is：Clinker, gypsum etc. are blended together into water
After ball milling, prepared reduction is added into cement ball abrasive material by the additive capacity of 200 g tons in the ball mill for mud batch
Agent, and be uniformly mixed.
The grade of cement has very much, and object of conventional 42.5 rating cements as experiment is selected in the embodiment of the present invention.
Embodiment 1
A kind of cement hexavalent chrome reduction agent, the reducing agent are prepared by following raw material, and each raw material and its mass percent are：
Stannous chloride 10%, ferrous sulfate 40%, protochloride manganese 25%, antimony pentoxide 5%, formaldehyde 15%, lignin 5%.
The preparation method of cement hexavalent chrome reduction agent described in the present embodiment is：By stannous chloride, ferrous sulfate, protochloride
Manganese, antimony pentoxide, formaldehyde, lignin sequentially add in container, stir evenly by hand, and then plastic bag sealing is packed, and is obtained
Cement hexavalent chrome reduction agent.
In the production process of conventional 42.5 rating cements, by cement batch ball milling it is good after, by adding for 200 g tons
Add dosage that the reducing agent of above-mentioned preparation is added into cement ball-milling clinker.
Embodiment 2
A kind of cement hexavalent chrome reduction agent, the reducing agent are prepared by following raw material, and each raw material and its mass percent are：
Stannous sulfate 15%, frerrous chloride 40%, manganese sulfate 15%, antimony oxide 10%, formaldehyde 2%, glycolaldehyde 8%, citric acid
10%。
The preparation method of cement hexavalent chrome reduction agent described in the present embodiment is：By stannous sulfate, frerrous chloride, manganese sulfate,
Antimony oxide, formaldehyde, glycolaldehyde, citric acid are sequentially added in churned mechanically roller, stir evenly polybag immediately
It packs, obtains cement hexavalent chrome reduction agent.
In the production process of conventional 42.5 rating cements, by cement batch ball milling it is good after, by adding for 200 g tons
Add dosage that prepared reducing agent is added into cement ball abrasive material, and is uniformly mixed.
Embodiment 3
A kind of cement hexavalent chrome reduction agent, the reducing agent are prepared by following raw material, and each raw material and its mass percent are：
Stannous sulfate 15%, ferrous sulfate 30%, manganese sulfate 15%, antimony oxide 10%, paraformaldehyde 20%, sodium lignin sulfonate
10%。
The preparation method of cement hexavalent chrome reduction agent described in the present embodiment is：By stannous sulfate, ferrous sulfate, manganese sulfate,
Antimony oxide, paraformaldehyde, sodium lignin sulfonate are sequentially added in churned mechanically roller, stir evenly plastics immediately
Bag hermetic package obtains cement hexavalent chrome reduction agent.
In the production process of conventional 42.5 rating cements, by cement batch ball milling it is good after, by adding for 200 g tons
Add dosage that prepared reducing agent is added into cement ball abrasive material, and is uniformly mixed.
Embodiment 4
A kind of cement hexavalent chrome reduction agent, the reducing agent are prepared by following raw material, and each raw material and its mass percent are：
Stannous chloride 20%, frerrous chloride 25%, manganese acetate 25%, antimony oxide 15%, acetaldehyde 10%, citric acid 2%, lignin sulfonic acid
Sodium 3%.
The preparation method of cement hexavalent chrome reduction agent described in the present embodiment is：By stannous chloride, frerrous chloride, manganese acetate,
Antimony oxide, acetaldehyde, citric acid, sodium lignin sulfonate pack immediately after mixing, obtain cement hexavalent chrome reduction
Agent.
In the production process of conventional 42.5 rating cements, by cement batch ball milling it is good after, by adding for 200 g tons
Add dosage that prepared reducing agent is added into cement ball abrasive material, and is uniformly mixed.
Comparative example 1
It is mixed to form cement batch by the raw material for preparing 42.5 conventional rating cements, will be added without after cement batch ball milling
Any hexavalent chrome reduction agent.
Different time is added to the setting time of the cement sample of embodiment 1-4 and comparative example 1, compression strength and reducing agent
Content of 6-valence Cr ions be tested, test result is as shown in table 1：
Table 1
Know from table 1：The cement hexavalent chrome reduction agent that embodiment 1-4 is added does not generate harmful effect to the performance of cement, real
Apply the content of 6-valence Cr ions being greatly lowered after cement hexavalent chrome reduction agent addition in a 1-4 in cement；In the cement of comparative example 1
Content of 6-valence Cr ions seriously exceeds European Union and the relevant criterion in China requires, the reduction of cement hexavalent chrome reduction agent in embodiment 1-4
Significant effect, and restoring function is stablized, and at 6th month, the content of Cr VI was still less than 2 ppm in cement.
Claims (2)
1. a kind of cement hexavalent chrome reduction agent, it is characterised in that：The reducing agent is prepared by following raw material, each raw material and its
Mass percent is：Tin salt 10%~20%, ferrous salt 25%~40%, manganous salt 15%~25%, antimony oxide 5%~
15%, organic reducing agent 10%~20%, stabilizer 5%~10%.
2. cement hexavalent chrome reduction agent according to claim 1, it is characterised in that：
The tin salt is the mixture that one or both of stannous sulfate, stannous chloride are mixed to get in any proportion；
The ferrous salt is the mixture that one or both of ferrous sulfate, frerrous chloride are mixed to get in any proportion；
The manganous salt is the mixing that one or more of manganese sulfate, manganese chloride, manganese acetate are mixed to get in any proportion
Object；
The antimony oxide is the mixing that one or both of antimony oxide, antimony pentoxide are mixed to get in any proportion
Object；
The organic reducing agent be formaldehyde, acetaldehyde, paraformaldehyde, glyceraldehyde, one or more of glycolaldehyde in any proportion
The mixture being mixed to get；
The stabilizer is what one or both of citric acid, lignin, lignosulfonates were mixed to get in any proportion
Mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810453423.7A CN108545982A (en) | 2018-05-14 | 2018-05-14 | A kind of cement hexavalent chrome reduction agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810453423.7A CN108545982A (en) | 2018-05-14 | 2018-05-14 | A kind of cement hexavalent chrome reduction agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108545982A true CN108545982A (en) | 2018-09-18 |
Family
ID=63494579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810453423.7A Pending CN108545982A (en) | 2018-05-14 | 2018-05-14 | A kind of cement hexavalent chrome reduction agent |
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Cited By (9)
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| CN109455959A (en) * | 2018-10-26 | 2019-03-12 | 王宇栋 | Cement admixture and preparation method and the water storage irrigation system for utilizing cement admixture |
| CN109503000A (en) * | 2018-11-09 | 2019-03-22 | 高正春 | A kind of environmentally friendly cement and preparation method thereof |
| CN109608083A (en) * | 2018-11-22 | 2019-04-12 | 湖南宏禹工程集团有限公司 | A kind of hexavalent chromium reducing solution and its preparation method and application for cement-based grouting material |
| CN109746258A (en) * | 2018-11-22 | 2019-05-14 | 湖南宏禹工程集团有限公司 | A method of hexavalent chromium in grouting joint electric osmose processing soil |
| CN110467372A (en) * | 2019-08-16 | 2019-11-19 | 深圳市弘朝科技有限公司 | A kind of cement hexavalent chrome reduction agent and preparation method thereof |
| CN112876123A (en) * | 2021-02-09 | 2021-06-01 | 曹志伟 | Cement hexavalent chromium reducing agent, and preparation method and application thereof |
| CN113480229A (en) * | 2021-08-04 | 2021-10-08 | 安徽精公检测检验中心有限公司 | Composite liquid chromium removal agent and preparation method and application thereof |
| CN115043611A (en) * | 2021-09-16 | 2022-09-13 | 安徽成弘建新材料有限公司 | Neutral high-temperature-resistant liquid cement hexavalent chromium reducing agent and preparation method thereof |
| CN115231847A (en) * | 2022-08-15 | 2022-10-25 | 辽宁天宝华瑞建材有限公司 | Cement chromium removing agent and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109455959A (en) * | 2018-10-26 | 2019-03-12 | 王宇栋 | Cement admixture and preparation method and the water storage irrigation system for utilizing cement admixture |
| CN109503000A (en) * | 2018-11-09 | 2019-03-22 | 高正春 | A kind of environmentally friendly cement and preparation method thereof |
| CN109746258B (en) * | 2018-11-22 | 2021-06-08 | 湖南宏禹工程集团有限公司 | Method for treating hexavalent chromium ions in soil by combining grouting and electroosmosis |
| CN109746258A (en) * | 2018-11-22 | 2019-05-14 | 湖南宏禹工程集团有限公司 | A method of hexavalent chromium in grouting joint electric osmose processing soil |
| CN109608083A (en) * | 2018-11-22 | 2019-04-12 | 湖南宏禹工程集团有限公司 | A kind of hexavalent chromium reducing solution and its preparation method and application for cement-based grouting material |
| CN109608083B (en) * | 2018-11-22 | 2022-01-25 | 湖南宏禹工程集团有限公司 | Hexavalent chromium ion reducing solution for cement-based grouting material and preparation method and application thereof |
| CN110467372A (en) * | 2019-08-16 | 2019-11-19 | 深圳市弘朝科技有限公司 | A kind of cement hexavalent chrome reduction agent and preparation method thereof |
| CN112876123A (en) * | 2021-02-09 | 2021-06-01 | 曹志伟 | Cement hexavalent chromium reducing agent, and preparation method and application thereof |
| CN112876123B (en) * | 2021-02-09 | 2022-09-02 | 曹志伟 | Cement hexavalent chromium reducing agent, and preparation method and application thereof |
| CN113480229A (en) * | 2021-08-04 | 2021-10-08 | 安徽精公检测检验中心有限公司 | Composite liquid chromium removal agent and preparation method and application thereof |
| CN115043611A (en) * | 2021-09-16 | 2022-09-13 | 安徽成弘建新材料有限公司 | Neutral high-temperature-resistant liquid cement hexavalent chromium reducing agent and preparation method thereof |
| CN115043611B (en) * | 2021-09-16 | 2023-09-05 | 安徽成弘建新材料有限公司 | Neutral high-temperature-resistant liquid cement hexavalent chromium reducing agent and preparation method thereof |
| CN115231847A (en) * | 2022-08-15 | 2022-10-25 | 辽宁天宝华瑞建材有限公司 | Cement chromium removing agent and preparation method thereof |
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Application publication date: 20180918 |