CN101264480A - Harm-reducing treatment method for phosphogypsum and red mud - Google Patents
Harm-reducing treatment method for phosphogypsum and red mud Download PDFInfo
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- CN101264480A CN101264480A CNA2008100687282A CN200810068728A CN101264480A CN 101264480 A CN101264480 A CN 101264480A CN A2008100687282 A CNA2008100687282 A CN A2008100687282A CN 200810068728 A CN200810068728 A CN 200810068728A CN 101264480 A CN101264480 A CN 101264480A
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- red mud
- ardealite
- phosphogypsum
- harm
- compound
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- 238000000034 method Methods 0.000 title abstract description 14
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 title abstract 5
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 15
- 230000006378 damage Effects 0.000 claims description 13
- 239000002689 soil Substances 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000003672 processing method Methods 0.000 claims description 6
- 239000002585 base Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 23
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 239000002910 solid waste Substances 0.000 description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 10
- 239000011574 phosphorus Substances 0.000 description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 239000002920 hazardous waste Substances 0.000 description 8
- 239000002699 waste material Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 6
- 239000002686 phosphate fertilizer Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000001988 toxicity Effects 0.000 description 4
- 231100000419 toxicity Toxicity 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical group [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical compound C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 description 1
- 238000004131 Bayer process Methods 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241000258241 Mantis Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 239000006012 monoammonium phosphate Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a harm-reducing treatment method of phosphogypsum and red mud, which comprises the following steps ofAnalyzing the pH value of the phosphogypsum and the red mud according to the acid content in the phosphogypsum and the alkali content in the red mud and according to H+With OH－Proportioning materials according to the molar ratio of 1.0: 1.0, and stacking after uniformly stirring the phosphogypsum and red mud mixture. The invention solves the major problem that enterprises cannot solve for a long time, has low investment and quick response, and makes important contribution to environmental protection.
Description
Technical field:
The present invention relates to the harm reduction processing method of ardealite and red mud, belong to the technology category that phosphorous chemical industry, calorize worker, environmental protection and industrial residue reduce discharging.
Background technology:
The comprehensive utilization of ardealite and red mud is enterprise's difficult problem, is again the difficult problem in the whole nation and even the world simultaneously.
(1) ardealite
Ardealite is the solid waste that gives off when producing phosphate fertilizer, phosphoric acid, and 1 ton of phosphoric acid of every production is (with P
2O
5Meter) produces 4.5-5 ton ardealite approximately.Ardealite divides dihydrate gypsum (CaSO
42H
2O) and semi-hydrated gypsum (CaSO
41/2H
2O), in the majority with dihydrate gypsum.Ardealite also contains small amounts of phosphoric acid, silicon, magnesium, iron, aluminium, sulfuric acid, fluorine and organic impurities etc. except that main component is calcium sulfate, wherein the main harm thing is water-soluble fluorine and free acid.
At present, about 2,600 ten thousand tons of world's phosphoric acid by wet process gross annual output amount, about 1.5 hundred million tons of by-product ardealite, utilization rate is 4.3%-4.6% only.Guizhou Province's ardealite discharge capacity in 2007 surpasses 5,000,000 tons, estimates that China will reach 1,500 ten thousand tons to phosphate fertilizer demand in 2015, and the ardealite annual emissions will be above 3,000 ten thousand tons when the time comes, and present utilization rate only is 2%-3%.Stack ardealite and not only taken a large amount of soils, and cause environmental pollutions such as soil, water body.Each big phosphatic fertilizer company, universities and scientific research institutions have carried out a large amount of research to this; with the sustainable development of realization phosphate fertilizer industry and the height utilization of ardealite; as: ardealite relieving haperacidity co-producing cement, making cement set retarder, brickmaking and gypsum sheet material etc.; but reason such as all big because of investing, that cost is high, utilization rate is low is failed large-scale promotion.
In the ardealite contamination accident, comparatively the typical case is Guizhou grand good fortune industry parent company in 2004 ardealite slag field seepage environmental pollution accident, heavily pacify river matter by severe contamination because of slag field seepage causes, total phosphorus surpasses national standard more than 100 times in the water, and fluoride exceeds standard more than 10 times.Therefore Guizhou grand good fortune industry parent company has also paid more than 8,000 ten thousand yuan pollution abatement costs, and administers for up to 3 years.
On May 9th, 2006, Environmental Protection Administration has externally announced 20 chemical industry that comprise cloud South 3rd Ring Road company, two phosphate fertilizer projects of Fu Rui company, petrochemical industry construction project environmental risk investigation result's circular with the form of (2006) No. 176 literary compositions of ring letter.Point out in the circular: the problem that Yunnan Prov Sanhuan Chemical Co., Ltd's 1,200,000 tons of/year phosphorus ammoniums project mainly exists: hazardous waste is stored in the slag field, and the downstream is village and newly-built enterprise, has great environment hidden danger.The Yunnan auspicious chemical industry of richness Co., Ltd produces 300000 tons of phosphoric acid per year and produces 600000 tons of monoammonium phosphate devices production domesticization demonstration projects per year and mainly has problems: hazardous waste is stored in the slag field, apart from 200 meters in tributary of Yangtze, mantis river, water outlet river course, Dian Chi, has great environment hidden danger.Require to discern again the major hazard source in the production process, carry out slag field environmental impact assessment again, implement the resettlement in two villages etc. as early as possible.On July 14th～16,2006, CNPC and Society of Chemical Industry, China Phosphate Industry Association (CPIA) etc. have organized the phosphate fertilizer trades council, require, promote the work of industry recycling economy to carry out research is discussed with regard to how carrying out the investigation rectification of current Environmental Protection Administration, first kind of governance approach of proposition is that the ardealite slip is made neutralisation treatment.The ardealite slip of discharging in producing is concentrated on a neutralization pond, add nertralizer and handle, make water-soluble P wherein
2O
5Become neutral, safe sediment such as calcium phosphate and calcirm-fluoride with fluoride, make above-mentioned two indexs of ardealite away from the hazardous waste standard.
(2) red mud
Red mud is the solid waste of discharging in the aluminum oxide production process, because of its appearance color is gained the name to redness of the skin or complexion earth is similar.Be that present discharge capacity is bigger, natural environment harm seriously is difficult to one of key industry waste residue that utilizes again.Nearly 100,000,000 tons of the annual discharging in whole world red mud, China's aluminium oxide output was approximately about 9,500,000 tons in 2006, and year discharge red mud amount adds aggregate value method of weighting storage over the years more than 1,200 ten thousand tons, and its quantity surpasses 100,000,000 tons, and utilization rate only is about 15%.
The chemical composition of red mud and mineral composition depend primarily on material composition of additive in composition, production method of alumina and the production process of bauxite etc., and wherein the main harm material is an alkali.Because the chemical bases that combines with red mud is difficult to remove and content is big, contains reasons such as titanium, aluminium and other plurality of impurities again, the innoxious use of red mud is difficult to carry out always.Therefore, all both at home and abroad alumina producing factory transports to the stockyard with red mud to build a dam and store up.Red mud except taking a large amount of soils and producing a large amount of capital costs, also causes soil alkalization, underground water pollution because the chemical composition in the red mud is infiltrated the soil in the process of storing up, people absorb this this material for a long time, will inevitably influence healthy.
The serious seepage of Guizhou Aluminum Factory red mud mine tailing dam in 1989, storehouse include alkali waste water and jump the river discharging to cat, cause 160 kilometers section to be subjected to severe contamination.River three--the hydraulic turbine group system in six grades of power stations is crossed wet part and is stopped up by fouling to cause the cat jumping, and each hydraulic pressure temperature anomaly rises, and more than 400 ten thousand yuan of economic losses are caused because of stop production to overhaul in the three grades of power stations of improving literature.Difficulty takes place in the factories and miness worker of nearly 1000 people and peasant's drinking water.
Summary of the invention:
The objective of the invention is to solve the harm reduction problem of ardealite and waste red mud residues, eliminate ardealite and storing up separately of red mud and the recessive environmental pollution that causes with the most cheap the simplest method.The object of the present invention is achieved like this, promptly utilize the industrial residue of phosphate fertilizer industry--industrial residue of ardealite and aluminium industry--red mud mixes, the laggard windrow that stirs is put, to reduce and to reduce nuisance quantity and concentration in ardealite, the waste red mud residues, thereby the problem of environmental pollution that thoroughly solves ardealite and red mud and brought, and be further used as the artificial soil base-material.
In the present invention, because in the industrial solid castoff ardealite free acid is arranged, free alkali is arranged in the red mud, mutually combining makes discarded object PH near neutral, simultaneously can generate calcium phosphate, prodan, the anhydrite material of indissoluble, thereby avoid the harm that acid, alkali cause environment in the waste residue.
Because the alkali in the ardealite in water-soluble fluorine and the red mud is combined into the fluosilicate of indissoluble, make that the water dissolution rate of fluorine reduces greatly in the ardealite.
According to above-mentioned principle, key of the present invention is ardealite and red mud are mixed mutually, has solved to produce with the easiest method and has gone up a long-standing difficult problem.The present invention carries out acid-base value analysis (being undertaken by the method for measuring pH value in the industrial solid wastes corrosion test method) with ardealite and red mud earlier, according to the alkali content of acid content in the ardealite and red mud, according to H in the ardealite
+With OH in the red mud
-Mol ratio be that 1.0: 1.0 principle is prepared burden, send common discarded object stockyard to store up after batching mixes.
Optimum proportion of the present invention is than being that alkali content according to acid content in the ardealite and red mud is by H+ and OH
-Mol ratio is 1.0: 1.0 batchings, and the compound laggard windrow that stirs is put.Evidence is pressed H according to the alkali content of acid content in the ardealite and red mud
+With OH
-1.0: 1.0 batchings of mol ratio, through fully stacking 2～7 days after the mixing and stirring, PH can be near neutrality or alkalescence in the mixture waste residue, i.e. PH=7.0～8.5, soluble fluoride is reduced to below the 2.0mg/L from original 125mg/L, and water-soluble phosphorus is reduced to below 0.06% from 1.36%.PH wherein, the mensuration of soluble fluoride and water-soluble phosphorus is carried out according to the national standard of the People's Republic of China (PRC) " hazardous waste discriminating ".
Ardealite and red mud mixture after the present invention handles, owing to greatly reduce nuisance quantity and concentration in ardealite and the waste red mud residues, thus thoroughly solved the problem of environmental pollution that ardealite and red mud brought.When ardealite and red mud are deposited separately, all be to stack as hazardous waste and corrosivity solid waste, storing up except that building a dam during stacking, also must import high density polyethylene (HDPE) antiseepage film carry out double-deck antiseepage, and the mixture after the present invention handles can be used as common waste residue to store up fully, need not build a dam and the antiseepage processing, can not bring environmental pollution, ardealite and red mud have become harmless solid waste by two class solid waste.Have certain economic benefits and important social benefit.
Through the mixture waste material that the present invention handles, also can be used as the base-material of artificial soil.
In sum, the present invention has following beneficial effect:
1, production technology of the present invention be with ardealite with after red mud two big industrial solid castoffs mix, simply stack, do not need to carry out special antiseepage and handle to stacking the place, can save antiseepage aspect, stockyard input.Ardealite and red mud dump all adopt import high density polyethylene (HDPE) antiseepage film to carry out comprehensive double-deck antiseepage at present, and difficulty of construction is big, requirement is high, and it is careless slightly to construct, and bring major hidden danger will for use in the future.
When 2, the present invention can thoroughly avoid ardealite or red mud to stack separately,, and cause the substantial pollution accident because of seepage control measure defective or damage.
3, production technology of the present invention is very simple, and small investment; Do not need to add other nertralizer in addition, thereby operating cost is low.
4, outstanding feature of the present invention is: can make the pH value of both mixtures be controlled at 6～8.5, soluble fluoride in the mixture is lower than 2mg/l, far below the national standard of hazardous solid waste 100mg/l, thereby make ardealite and two kind of two class solid waste of red mud (ardealite actual reach dangerous solid waste standard) be transformed into harmless common discarded object.
5, the present invention can solve red skyization group Guizhou sky peaking worker Co., Ltd in the recent period and stores up the master stream, main drinking water source in Kweiyang for a long time--and the ardealite of Yang Chang river bank is to the harm of Kweiyang health of people, because Guizhou Pingba Hongda Aluminum Chemical Co., Ltd. and red skyization group Guizhou sky peaking worker Co., Ltd are at a distance of only 10 kilometers, it is extremely convenient to handle.
6, another significant effectively achievement of the present invention is to can be used as the artificial soil base-material by the mixture that method of the present invention is handled, after adding a certain proportion of organic matter (stalk, pine needle etc.) and chelating agent, the stony desertification that is used for Pingba area, Guizhou is administered.
7, successful Application of the present invention can produce the huge social benefit.
The specific embodiment:
Embodiments of the invention are to carry out in the proving ground, technique center of Guizhou Pingba Hongda Aluminum Chemical Co., Ltd., and testing equipment has equipment such as mixer, conveyer.
The red mud that embodiment adopted is the Bayer process red mud of alumina producing institute of grand calorize worker Co., Ltd output, and annual emissions is 200,000 tons; Ardealite is the ardealite that red skyization group Guizhou sky peaking worker Co., Ltd phosphoric acid production produces, 300,000 tons of annual emissions.
Embodiment 1:
The red mud of implementing to adopt is a fresh red mud under Guizhou Pingba Hongda Aluminum Chemical Co., Ltd.'s plate and frame filter press, the chemical constituent of red mud: Al
2O
3: 23.84%, SiO
2: 13.60%, Fe
2O
3: 7.4%; CaO:22.5%, TiO
2: 7.5%, Na
2O:5.4%.
The basicity of red mud is measured according to the State Standard of the People's Republic of China: solid waste determination of corrosion＜glass electrode method〉GB/T15555.12-1995 measures, and pH value is 11.3,
The ardealite of implementing to adopt is a fresh ardealite under the red skyization group Guizhou sky peaking worker Co., Ltd transition machine, the chemical constituent of ardealite: SiO
2: 4.08%, Fe
2O
3: 0.4%; CaO:33.6%, SO
3: 44.33%, P
2O
5: 2.52%, water-soluble phosphorus 1.36%.
The acidity assaying of ardealite is according to the State Standard of the People's Republic of China: solid waste determination of corrosion＜glass electrode method〉GB/T15555.12-1995 measures, and pH value is 2.5; Soluble fluoride is according to People's Republic of China's environmental industry standard: solid waste leaches toxicity leaching method＜sulfuric acid nitrate method〉HJ/T299-2007 measures, soluble fluoride is 125mg/l, exceeds the State Standard of the People's Republic of China: the hazardous waste judging standard leaches the requirement of the 100mg/l that stipulates among the toxicity judging standard GB5085.3-2007.
Batching: getting 100 kilograms of ardealites, is to prepare burden at 1: 1.5 then to store up with the mixer mixing by the weight ratio of ardealite and red mud.
Result of implementation:
Sampling detects (detection method is the same) after 2 days, and the pH value of mixture is 4.1, the soluble fluoride in the mixture: 2.85mg/l, water-soluble phosphorus 0.06%.
Sampling detects (detection method is the same) after 7 days, and the pH value of mixture is 3.9, the soluble fluoride in the mixture: 2.70mg/l, water-soluble phosphorus 0.06%.
Soluble fluoride is far below the State Standard of the People's Republic of China: the hazardous waste judging standard leaches the requirement of the 100mg/l that stipulates among the toxicity judging standard GB5085.3-2007.
Embodiment 2:
The red mud of implementing to adopt is a fresh red mud under Guizhou Pingba Hongda Aluminum Chemical Co., Ltd.'s plate and frame filter press, the chemical constituent of red mud: Al
2O
3: 24.05%, SiO
2: 13.87%, Fe
2O
3: 7.1%; CaO:23.6%, TiO
2: 7.35%, Na
2O:6.0%.
The basicity of red mud is measured according to the State Standard of the People's Republic of China: solid waste determination of corrosion＜glass electrode method〉GB/T15555.12-1995 measures, and pH value is 11.5.
Chemical constituent, the soluble fluoride of the ardealite that enforcement is adopted are identical with embodiment 1.
Batching: getting 100 kilograms of ardealites, is to prepare burden at 1.0: 1.0 then to store up with the mixer mixing by the weight ratio of ardealite and red mud.
Result of implementation:
Sampling detects (detection method is the same) after 2 days, and the pH value of mixture is 7.7, the soluble fluoride in the mixture: 1.16mg/l, and water-soluble phosphorus does not detect.
Sampling detects (detection method is the same) after 7 days, and the pH value of mixture is 7.6, the soluble fluoride in the mixture: 1.05mg/l, and water-soluble phosphorus does not detect.
Soluble fluoride is far below the State Standard of the People's Republic of China: the hazardous waste judging standard leaches the requirement of the 100mg/l that stipulates among the toxicity judging standard GB5085.3-2007.
In actual production, take a sample, make every effort to accomplish representative.
The invention solves enterprise and be not resolved for a long time and deposited a great difficult problem, small investment, instant effect has been made significant contribution for environmental protection, has great social benefit, in place with good conditionsi, all is worthy of popularization.
Claims (4)
1. the harm reduction processing method of an ardealite, red mud is characterized in that with stacking after ardealite and the mutual mixing and stirring of red mud.
2. the harm reduction processing method of a kind of ardealite according to claim 1, red mud is characterized in that earlier ardealite and red mud being carried out the acid-base value analysis, according to the alkali content of acid content in the ardealite and red mud, according to H
+With OH
-Mol ratio 1.0: 1.0 batching is put ardealite and the red mud compound laggard windrow that stirs.
3. the harm reduction processing method of a kind of ardealite according to claim 1 and 2, red mud is characterized in that ardealite and red mud compound stacked 2～7 days at least, and making compound PH is 7.0～8.5, measures the compound soluble fluoride by GB and is lower than 2mg/L.
4. the harm reduction processing method of a kind of ardealite according to claim 3, red mud is characterized in that stacking the base-material of qualified compound as artificial soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100687282A CN101264480A (en) | 2008-04-25 | 2008-04-25 | Harm-reducing treatment method for phosphogypsum and red mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100687282A CN101264480A (en) | 2008-04-25 | 2008-04-25 | Harm-reducing treatment method for phosphogypsum and red mud |
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|---|---|
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|---|---|---|---|
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173736A (en) * | 2011-01-26 | 2011-09-07 | 武汉理工大学 | Ceramic material for floor tile and preparation method thereof |
| CN102206024A (en) * | 2011-03-11 | 2011-10-05 | 吴永贵 | Method for quickly dealkalizing red mud by using phosphogypsum |
| CN102210205A (en) * | 2011-03-11 | 2011-10-12 | 吴永贵 | Method for rapidly recovering vegetation in red mud disposal field |
| CN105665425A (en) * | 2016-04-11 | 2016-06-15 | 贵州晨辉达矿业工程设计有限公司 | Harmless disposing method for red mud and ardealite |
| CN108239323A (en) * | 2017-11-30 | 2018-07-03 | 贵阳兴塑科技股份有限公司 | A kind of method of ardealite and red mud filling PE drainpipes |
| CN110102559A (en) * | 2019-04-29 | 2019-08-09 | 长江师范学院 | Ardealite cooperates with stable curing method with phosphate ore flotation tailings |
| CN111606652A (en) * | 2019-04-29 | 2020-09-01 | 中建材创新科技研究院有限公司 | Antibacterial mildew-proof caulking gypsum |
| CN111606651A (en) * | 2019-04-29 | 2020-09-01 | 中建材创新科技研究院有限公司 | Heat-conducting gypsum self-leveling mortar and preparation method and application thereof |
| CN113020242A (en) * | 2021-03-11 | 2021-06-25 | 中铝环保生态技术(湖南)有限公司 | Fluorine-contaminated soil remediation agent and laboratory application method |
| CN113526887A (en) * | 2021-08-02 | 2021-10-22 | 贵州理工学院 | Red mud-phosphogypsum composite cementing material and preparation method thereof |
| CN116177979A (en) * | 2023-03-15 | 2023-05-30 | 昆明理工大学 | Method for preparing composite paste material by using phosphogypsum and red mud and application thereof |
-
2008
- 2008-04-25 CN CNA2008100687282A patent/CN101264480A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173736A (en) * | 2011-01-26 | 2011-09-07 | 武汉理工大学 | Ceramic material for floor tile and preparation method thereof |
| CN102206024A (en) * | 2011-03-11 | 2011-10-05 | 吴永贵 | Method for quickly dealkalizing red mud by using phosphogypsum |
| CN102210205A (en) * | 2011-03-11 | 2011-10-12 | 吴永贵 | Method for rapidly recovering vegetation in red mud disposal field |
| CN105665425A (en) * | 2016-04-11 | 2016-06-15 | 贵州晨辉达矿业工程设计有限公司 | Harmless disposing method for red mud and ardealite |
| CN108239323A (en) * | 2017-11-30 | 2018-07-03 | 贵阳兴塑科技股份有限公司 | A kind of method of ardealite and red mud filling PE drainpipes |
| CN110102559A (en) * | 2019-04-29 | 2019-08-09 | 长江师范学院 | Ardealite cooperates with stable curing method with phosphate ore flotation tailings |
| CN110102559B (en) * | 2019-04-29 | 2020-05-19 | 长江师范学院 | Method for synergistically stabilizing and curing phosphogypsum and phosphorite flotation tailings |
| CN111606652A (en) * | 2019-04-29 | 2020-09-01 | 中建材创新科技研究院有限公司 | Antibacterial mildew-proof caulking gypsum |
| CN111606651A (en) * | 2019-04-29 | 2020-09-01 | 中建材创新科技研究院有限公司 | Heat-conducting gypsum self-leveling mortar and preparation method and application thereof |
| CN113020242A (en) * | 2021-03-11 | 2021-06-25 | 中铝环保生态技术(湖南)有限公司 | Fluorine-contaminated soil remediation agent and laboratory application method |
| CN113526887A (en) * | 2021-08-02 | 2021-10-22 | 贵州理工学院 | Red mud-phosphogypsum composite cementing material and preparation method thereof |
| CN116177979A (en) * | 2023-03-15 | 2023-05-30 | 昆明理工大学 | Method for preparing composite paste material by using phosphogypsum and red mud and application thereof |
| CN116177979B (en) * | 2023-03-15 | 2024-05-28 | 昆明理工大学 | Method for preparing composite paste material by using phosphogypsum and red mud and application thereof |
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