CN108774024A - A kind of method of arsenic slag firming body and arsenic slag solidification and stabilization - Google Patents
A kind of method of arsenic slag firming body and arsenic slag solidification and stabilization Download PDFInfo
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- CN108774024A CN108774024A CN201810588399.8A CN201810588399A CN108774024A CN 108774024 A CN108774024 A CN 108774024A CN 201810588399 A CN201810588399 A CN 201810588399A CN 108774024 A CN108774024 A CN 108774024A
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- slag
- arsenic slag
- arsenic
- firming body
- water
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- 239000002893 slag Substances 0.000 title claims abstract description 125
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 121
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000007711 solidification Methods 0.000 title abstract description 29
- 230000008023 solidification Effects 0.000 title abstract description 29
- 230000006641 stabilisation Effects 0.000 title abstract description 26
- 238000011105 stabilization Methods 0.000 title abstract description 23
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 44
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 42
- 239000000203 mixture Substances 0.000 claims abstract description 39
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 29
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000010881 fly ash Substances 0.000 claims abstract description 23
- 239000000292 calcium oxide Substances 0.000 claims abstract description 22
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 22
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 229920001732 Lignosulfonate Polymers 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 3
- 230000003467 diminishing effect Effects 0.000 claims description 3
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 230000009514 concussion Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims 1
- 239000010883 coal ash Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000012467 final product Substances 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 239000002699 waste material Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000001988 toxicity Effects 0.000 description 4
- 231100000419 toxicity Toxicity 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229960002594 arsenic trioxide Drugs 0.000 description 2
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- KTTMEOWBIWLMSE-UHFFFAOYSA-N diarsenic trioxide Chemical compound O1[As](O2)O[As]3O[As]1O[As]2O3 KTTMEOWBIWLMSE-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical compound [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000032683 aging 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
- 229940000489 arsenate Drugs 0.000 description 1
- AQLMHYSWFMLWBS-UHFFFAOYSA-N arsenite(1-) Chemical compound O[As](O)[O-] AQLMHYSWFMLWBS-UHFFFAOYSA-N 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002351 wastewater Substances 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of methods of arsenic slag firming body and solidification and stabilization.Arsenic slag firming body provided by the invention, in parts by weight, including：Arsenic slag 30~60%, flyash 0~20%, slag 0~20%, quick lime 10~20%, calcium sulfate 2~5%, cement 8~15%, wherein be 0 when flyash and slag difference.Mix grinding after the arsenic slag, flyash and/or slag, quick lime, calcium sulfate are mixed, obtains mixture, and mixture and water, water-reducing agent, cement are sufficiently stirred mixing, slurry is obtained, slurry pours into mold, fully shaking molding, maintenance demoulds for 6~24 hours, naturally non-evaporating after demoulding to conserve to obtain the final product.The advantages that method of arsenic slag firming body and solidification and stabilization provided by the invention, arsenic slag curing efficiency is high, at low cost, simple for process, solves the problems, such as that arsenic slag solidification and stabilization effect is poor, firming body increase-volume is than high.
Description
Technical field
The present invention relates to hazardous waste process field more particularly to a kind of methods of arsenic slag firming body and solidification and stabilization.
Background technology
What arsenic-containing waste residue generated in the sediment and electrolytic process of melting waste slag, processing arsenic-containing waste water and spent acid
The earth of positive pole containing arsenic etc..Arsenic content is higher in smelted furnace cinder (arsenic alkaline slag especially generated in antimony smelting process), it is more serious to pollute.
From the point of view of entire nonferrous metallurgy system, into the arsenic of smeltery, except a part is directly recycled into the white arsenic of product (such as from high arsenic smoke dust
In directly extract white arsenic) outside, other intermediate products containing arsenic finally nearly all enter in arsenic-containing waste residue.
Arsenic slag belongs to danger wastes, and processing and disposition need the related request for meeting national dangerous waste processing to carry out.Mesh
Before, the waste residue that the country generates is mostly higher containing arsenic, and environment potential hazard is big, does not have recycling condition, general solidification and stabilization
Enter dangerous waste landfill yard after processing.
The common cement solidification technical finesse arsenic slag in the country, existing curing process has the shortcomings that numerous：1) cement adds
Amount is big；2) making coatings are needed to handle；3) increase-volume is than big after handling.Than being up to 6-7, some areas are even up to for cured increase-volume at present
10, cause cost of disposal to be up to 1000 yuan or more, and be unfavorable for filling.Also some areas cure skill using organic polymer
Art, although the catalyst amounts of addition are seldom, the increase-volume of final products is smaller than other solidification methods, processing safety is poor, right
The corrosion resistant of equipment, which requires height, firming body loss of properties on aging, need to be packed into container disposes etc., and disposal costs also remain high.
Stabilization technology is also a kind of method of processing arsenic slag, and concrete operations are first to be pre-processed to arsenic slag, use hot water
Or the solution such as soda acid leach arsenic, then carry out stabilization processes to leachate.It is heavy by the way that calcium salt, molysite are added into leachate
Shallow lake agent generates arsenate and arsenite opposite indissoluble, relatively stable under natural conditions, can be removed in liquid phase using filter
Arsenic.The treatment technology complex process, processing time are long, and will produce secondary pollution in processing procedure.
Therefore, according to current arsenic Slag treatment technology there are the problem of, the arsenic Slag treatment during, on the one hand consider arsenic slag
Problem of solidification, used technique should be able to reduce the Leaching of arsenic as far as possible；On the other hand, also to consider that arsenic slag is cured
Increase-volume ratio.Therefore, exploitation arsenic slag solidification effect is good, increase-volume is more dirty for solving arsenic slag than low arsenic slag solidification and stabilization method method
Dye problem has great importance.
Invention content
Purpose of the present invention is to solve the problems, such as that existing arsenic slag solidification and stabilization effect is poor, firming body increase-volume is than high, one is provided
The arsenic slag solidification and stabilization method of kind low cost.
It is an object of the present invention to provide a kind of arsenic slag firming bodys, and in parts by weight, the arsenic slag firming body includes：Arsenic
Slag 30~60%, flyash 0~20%, slag 0~20%, quick lime 10~20%, calcium sulfate 2~5%, cement 8~15%,
Water-reducing agent 0.5~2%, wherein be 0 when flyash and slag difference.
Specifically, the arsenic slag firming body include it is following 1) and/or 2)：
1) arsenic slag firming body described in every 10100g includes：Arsenic slag 5000g, slag 1600g, quick lime 1700g, calcium sulfate
200g, cement 1500g, water-reducing agent 100g；
2) arsenic slag firming body described in every 10100g includes：Arsenic slag 5000g, flyash 1600g, quick lime 1700g, calcium sulfate
200g, cement 1500g, water-reducing agent 100g.
Specifically, the water-reducing agent includes in polycarboxylate water-reducer, lignin sulfonate water-reducing agent, naphthalene water reducer
It is at least one.
Specifically, mix grinding after the arsenic slag, flyash and/or slag, quick lime, calcium sulfate are mixed.
Specifically, the time of the mix grinding is 0.2-1h；And/or the mix grinding includes by ball milling, Vertical Mill, Raymond mill
A kind of mix grinding.
Again specifically, the mix grinding time is 0.2h.
It is a further object to provide a kind of preparation method of arsenic slag firming body, the method includes：
1) mix grinding after mixing the arsenic slag, flyash and/or slag, quick lime, calcium sulfate, obtains mixture；
2) after adding water, water-reducing agent to mix thoroughly the mixture and cement mixing mixes to obtain slurry thoroughly；
3) slurry is poured into mold, after concussion molding, conserves 6~24 hours and demould, it is naturally non-evaporating after demoulding to support
It protects to obtain the final product.
At least one of specifically, the method further includes following 1) -4) described：
1) in the method, in parts by weight, including：Arsenic slag 30~60%, flyash 0~20%, slag 0~20%,
Quick lime 10~20%, calcium sulfate 2~5%, cement 8-15%, water-reducing agent 0.5~2%, wherein when flyash and slag difference
It is 0；
2) in the method, the water-reducing agent includes polycarboxylate water-reducer, lignin sulfonate water-reducing agent, naphthalene system diminishing
At least one of agent；
3) time of the mix grinding is 0.2-1h；
4) mix grinding includes by a kind of mix grinding in ball milling, Vertical Mill, Raymond mill.
Specifically, in the method, the arsenic slag firming body include it is following 1) and/or 2)：
1) arsenic slag firming body described in every 10100g includes：Arsenic slag 5000g, slag 1600g, quick lime 1700g, calcium sulfate
200g, cement 1500g, water-reducing agent 100g；
2) arsenic slag firming body described in every 10100g includes：Arsenic slag 5000g, flyash 1600g, quick lime 1700g, calcium sulfate
200g, cement 1500g, water-reducing agent 100g.
A further object is for the present invention provides the present invention arsenic slag firming body that any method is prepared.
A further object is for the present invention provides the present invention application of any arsenic slag firming body.
It is also another object of the present invention to provide the applications of any the method for the present invention.
At least one of specifically, any application includes following 1) -2) described：
1) application in preparing arsenic slag firming body or its Related product；
2) application in offal treatment containing arsenic.
Arsenic slag solidification and stabilization method of the present invention, principle include：
(1) arsenic slag stabilizes pretreatment：After the arsenic slag, flyash, slag, quick lime, calcium sulfate are sufficiently mixed, set
The mix grinding 0.2-1h in ball mill, Vertical Mill or Raymond mill；In the process, material particles constantly reduce, the highly basic of quick lime
It is come into full contact with silica, the alundum (Al2O3) in flyash, slag, generates CaOSiO2·nH2O、CaO·Al2O3·
nH2O etc. has the substance of gelling, and the effect similar with cement can be played in subsequent reaction, further enhances material
Intensity.In mix grinding, arsenic solid impurity particle constantly reduces, and comes into full contact with, mixes with remaining substance in mixture, to subsequent solid
Facilitation is played in change.This and conventional cement solidification are different, and it is uneven that traditional cements solidification be easy to cause the mixing of arsenic slag,
Therefore, it is necessary to more cement to cure, and then lead to higher increase-volume ratio.
(2) mixture obtained by step (1) is sufficiently mixed with cement, water is added to stir, water-reducing agent is added, keep material mixing equal
It is even, obtain the arsenic slag solidification slurry；
(3) it is molded：Slurry obtained by step (2) is poured into mold, fully shaking molding is conserved 6~24 hours and demoulded, takes off
Natural curing after mould.Arsenic slag comes into full contact with the gelling substance in mixture, and in maintenance processes, resolvability arsenic is gelled
Substance adequately wraps up, is fixed, and therefore, arsenic slag is cured and stabilized.
The present invention has the advantages that：
A kind of arsenic slag firming body and arsenic slag solidification and stabilization method provided by the invention, due to the work using ball milling activation
Skill significantly improves the intensity of arsenic slag firming body.Since arsenic slag volume is high, the increase-volume ratio of firming body is greatly reduced,
A certain amount of flyash, slag the like waste are added simultaneously, greatly reduces production cost and subsequent processing cost.When maintenance
Using naturally non-evaporating maintenance, the cumbersome technique of conventional high-tension evaporation maintenance is avoided, technique is simplified.It is demonstrated experimentally that using this
Landfill yard related request can be met by inventing made firming body Leaching and intensity.A kind of arsenic slag solidification provided by the invention
Stabilization method has many advantages, such as that arsenic slag curing efficiency is high, at low cost, simple for process, solves arsenic slag solidification and stabilization effect
Difference, firming body increase-volume are than high problem.
Description of the drawings
Fig. 1 is a kind of process flow diagram of arsenic slag solidification and stabilization method.
Specific implementation mode
Technical scheme of the present invention is further elaborated with reference to embodiment and attached drawing.
Embodiment 1
As shown in Figure 1, a kind of arsenic slag solidification and stabilization method, step include：
(1) arsenic slag stabilizes pretreatment：By arsenic slag (butt) 6000g, flyash 900g, slag 700g, quick lime
After 1000g, calcium sulfate 200g are sufficiently mixed, it is placed in mix grinding 0.5h in ball mill；
(2) mixture obtained by step (1) is sufficiently mixed with 1200g cement, water 2000g is added to stir, naphthalene system diminishing is added
Agent 150g makes material be uniformly mixed, obtains the arsenic slag firming body slurry；
(3) it is molded：Slurry obtained by step (2) is poured into mold, fully shaking molding is conserved 12 hours and demoulded, demoulding
Naturally non-evaporating maintenance afterwards.
Above-mentioned formula, after tested, 7 days compression strength are 4.37MPa, and 28 days compression strength is 10.47MPa, and total arsenic leaches
Toxicity is less than 1mg/L, firming body increase-volume ratio<2.
Embodiment 2
A kind of arsenic slag solidification and stabilization method, step include：
(1) arsenic slag stabilisation and activity excitation：By arsenic slag 3000g, flyash 2000g, slag 2000g, quick lime
After 1700g, calcium sulfate 500g are sufficiently mixed, it is placed in mix grinding 1h in Vertical Mill；
(2) mixture obtained by step (1) is sufficiently mixed with 800g cement, water 4000g is added to stir, lignin sulfonic acid is added
Salt water-reducing agent 50g makes material be uniformly mixed, obtains the arsenic slag firming body slurry；
(3) it is molded：Slurry obtained by step (2) is poured into mold, fully shaking molding is conserved 6 hours and demoulded, after demoulding
Naturally non-evaporating maintenance.
Above-mentioned formula, after tested, 7 days compression strength are 3.36MPa, and 28 days compression strength is 7.43MPa, and total arsenic leaches poison
Property be less than 1mg/L, firming body increase-volume ratio<3.
Embodiment 3
A kind of arsenic slag solidification and stabilization method, step include：
(1) arsenic slag stabilisation and activity excitation：By arsenic slag 5000g, flyash 1600g, quick lime 1700g, calcium sulfate
After 200g is sufficiently mixed, it is placed in mix grinding 0.2h in Raymond mill；
(2) mixture obtained by step (1) is sufficiently mixed with 1500g cement, water 2500g is added to stir, polycarboxylic acids is added and subtracts
Aqua 100g makes material be uniformly mixed, obtains the arsenic slag firming body slurry；
(3) it is molded：Slurry obtained by step (2) is poured into mold, fully shaking molding is conserved 24 hours and demoulded, demoulding
Naturally non-evaporating maintenance afterwards.
Above-mentioned formula, after tested, 7 days compression strength are 6.15MPa, and 28 days compression strength is 13.22MPa, and total arsenic leaches
Toxicity is less than 1mg/L, firming body increase-volume ratio<2.
Embodiment 4
As shown in Figure 1, a kind of arsenic slag solidification and stabilization method, step include：
(1) arsenic slag stabilisation and activity excitation：By arsenic slag 5000g, slag 1600g, quick lime 1700g, calcium sulfate 200g
After being sufficiently mixed, it is placed in mix grinding 0.2h in ball mill；
(2) mixture obtained by step (1) is sufficiently mixed with 1500g cement, water 3000g is added to stir, polycarboxylic acids is added and subtracts
Aqua 100g makes material be uniformly mixed, obtains the arsenic slag firming body slurry；
(3) it is molded：Slurry obtained by step (2) is poured into mold, fully shaking molding is conserved 24 hours and demoulded, demoulding
Naturally non-evaporating maintenance afterwards.
Above-mentioned formula, after tested, 7 days compression strength are 6.24MPa, and 28 days compression strength is 13.56MPa, and total arsenic leaches
Toxicity is less than 1mg/L, firming body increase-volume ratio<2.
Comparative example 1
A kind of arsenic slag solidification and stabilization method, during preparing firming body, step 1 is without mix grinding, remaining step
Consistent with step in embodiment 1, after tested, 7 days compression strength is 1.13MPa, and 28 days compression strength is 2.52MPa, total arsenic leaching
Go out toxicity and be more than 30mg/L, it was demonstrated that mix grinding is not only able to significantly improve the intensity of firming body, and can play the work of solidification arsenic
With.
It can find out from embodiment and comparative example, since arsenic slag volume is high, greatly reduce increase-volume ratio, the drop of firming body
Low production cost and subsequent processing cost.And can it be met using the present invention made firming body Leaching and intensity
Landfill yard related request.A kind of arsenic slag solidification and stabilization method provided by the invention is high, at low cost etc. with arsenic slag curing efficiency
Advantage solves the process problem of arsenic slag.
The sequencing of above example is only for ease of description, can not represent the quality of embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of arsenic slag firming body, which is characterized in that in parts by weight, the arsenic slag firming body includes：Arsenic slag 30~60%, powder
Coal ash 0~20%, slag 0~20%, quick lime 10~20%, calcium sulfate 2~5%, cement 8~15%, water-reducing agent 0.5~
2%, wherein be 0 when flyash and slag difference.
2. arsenic slag firming body according to claim 1, which is characterized in that the arsenic slag firming body include it is following 1) and/or
2)：
1) arsenic slag firming body described in every 10100g includes：Arsenic slag 5000g, slag 1600g, quick lime 1700g, calcium sulfate 200g,
Cement 1500g, water-reducing agent 100g；
2) arsenic slag firming body described in every 10100g includes：Arsenic slag 5000g, flyash 1600g, quick lime 1700g, calcium sulfate
200g, cement 1500g, water-reducing agent 100g.
3. the arsenic slag firming body according to claim 1 and/or 2, it is characterised in that：The water-reducing agent includes polycarboxylic acids diminishing
At least one of agent, lignin sulfonate water-reducing agent, naphthalene water reducer.
4. according to any arsenic slag firming body in claim 1,2 and/or 3, which is characterized in that by the arsenic slag, flyash
And/or mix grinding after the mixing of slag, quick lime, calcium sulfate.
5. arsenic slag firming body according to claim 4, it is characterised in that：The time of the mix grinding is 0.2-1h；And/or institute
It includes by a kind of mix grinding in ball milling, Vertical Mill, Raymond mill to state mix grinding.
6. a kind of preparation method of arsenic slag firming body, which is characterized in that the method includes：
1) mix grinding after mixing the arsenic slag, flyash and/or slag, quick lime, calcium sulfate, obtains mixture；
2) after adding water, water-reducing agent to mix thoroughly the mixture and cement mixing mixes to obtain slurry thoroughly；
3) slurry is poured into mold, after concussion molding, conserves 6~24 hours and demould, naturally non-evaporating conserve is after demoulding
?.
7. according to the method described in claim 6, it is characterized in that, the method further includes following 1) -4) it is described at least
It is a kind of：
1) in the method, in parts by weight, including：Arsenic slag 30~60%, flyash 0~20%, slag 0~20%, raw stone
Ash 10~20%, calcium sulfate 2~5%, cement 8~15%, water-reducing agent 0.5~2%, wherein be when flyash and slag difference
0；
2) in the method, the water-reducing agent includes in polycarboxylate water-reducer, lignin sulfonate water-reducing agent, naphthalene water reducer
At least one；
3) time of the mix grinding is 0.2-1h；
4) mix grinding includes by a kind of mix grinding in ball milling, Vertical Mill, Raymond mill.
8. the arsenic slag firming body that the method described in claim 6 and/or 7 is prepared.
9. the application of any arsenic slag firming bodys of claim 1-5 and/or 8.
10. the application of claim 6 and/or 7 the methods.
Priority Applications (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607947A (en) * | 2018-12-25 | 2019-04-12 | 贵州省分析测试研究院 | A method of removing coal washery heavy metal in waste water arsenic |
| CN112499919A (en) * | 2020-01-09 | 2021-03-16 | 中国铝业股份有限公司 | Treatment method of copper smelting sludge |
| CN112495984A (en) * | 2020-10-27 | 2021-03-16 | 清大国华环境集团股份有限公司 | Hazardous waste solidification/stabilization comprehensive treatment method |
| CN113233824A (en) * | 2021-06-02 | 2021-08-10 | 昆明理工大学 | Preparation method of tin tailing based low-permeability heavy metal solidified body for underground filling |
| CN113413570A (en) * | 2020-12-15 | 2021-09-21 | 深圳市长隆科技有限公司 | Preparation and application of long-period stable fly ash chelating agent |
| CN114589198A (en) * | 2022-03-09 | 2022-06-07 | 北京科技大学 | In-situ stabilizing material for multiple heavy metals in acidic arsenic slag and application method thereof |
| CN115093168A (en) * | 2022-06-23 | 2022-09-23 | 昆明理工大学 | Method for fixing arsenic in tin tailings by using cement |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB499172A (en) * | 1937-04-15 | 1939-01-19 | Christiaan Kornelis Visser | Improvements relating to acoustic mortar or plaster mixtures |
| CN105499250A (en) * | 2015-12-01 | 2016-04-20 | 昆明理工大学 | Stabilizing treatment method for sulfide arsenic-removed dregs |
-
2018
- 2018-06-08 CN CN201810588399.8A patent/CN108774024A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB499172A (en) * | 1937-04-15 | 1939-01-19 | Christiaan Kornelis Visser | Improvements relating to acoustic mortar or plaster mixtures |
| CN105499250A (en) * | 2015-12-01 | 2016-04-20 | 昆明理工大学 | Stabilizing treatment method for sulfide arsenic-removed dregs |
Non-Patent Citations (1)
| Title |
|---|
| 李柏林 等: "含砷废渣的固化处理", 《化工环保》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607947A (en) * | 2018-12-25 | 2019-04-12 | 贵州省分析测试研究院 | A method of removing coal washery heavy metal in waste water arsenic |
| CN112499919A (en) * | 2020-01-09 | 2021-03-16 | 中国铝业股份有限公司 | Treatment method of copper smelting sludge |
| CN112499919B (en) * | 2020-01-09 | 2022-07-26 | 中国铝业股份有限公司 | Treatment method of copper smelting sludge |
| CN112495984A (en) * | 2020-10-27 | 2021-03-16 | 清大国华环境集团股份有限公司 | Hazardous waste solidification/stabilization comprehensive treatment method |
| CN112495984B (en) * | 2020-10-27 | 2021-10-01 | 清大国华环境集团股份有限公司 | Hazardous waste solidification/stabilization comprehensive treatment method |
| CN113413570A (en) * | 2020-12-15 | 2021-09-21 | 深圳市长隆科技有限公司 | Preparation and application of long-period stable fly ash chelating agent |
| CN113413570B (en) * | 2020-12-15 | 2022-07-22 | 深圳市长隆科技有限公司 | Preparation and application of long-period stable fly ash chelating agent |
| CN113233824A (en) * | 2021-06-02 | 2021-08-10 | 昆明理工大学 | Preparation method of tin tailing based low-permeability heavy metal solidified body for underground filling |
| CN114589198A (en) * | 2022-03-09 | 2022-06-07 | 北京科技大学 | In-situ stabilizing material for multiple heavy metals in acidic arsenic slag and application method thereof |
| CN115093168A (en) * | 2022-06-23 | 2022-09-23 | 昆明理工大学 | Method for fixing arsenic in tin tailings by using cement |
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