CN110000187A - A kind of barium dregs innocent treatment method - Google Patents
A kind of barium dregs innocent treatment method Download PDFInfo
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- CN110000187A CN110000187A CN201910211769.0A CN201910211769A CN110000187A CN 110000187 A CN110000187 A CN 110000187A CN 201910211769 A CN201910211769 A CN 201910211769A CN 110000187 A CN110000187 A CN 110000187A
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- Prior art keywords
- barium
- slag
- flue gas
- treatment method
- innocent treatment
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- 229910052788 barium Inorganic materials 0.000 title claims abstract description 119
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000002893 slag Substances 0.000 claims abstract description 86
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000003546 flue gas Substances 0.000 claims abstract description 44
- 238000002386 leaching Methods 0.000 claims abstract description 36
- CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 claims description 25
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 20
- 229910052601 baryte Inorganic materials 0.000 claims description 18
- 239000010428 baryte Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 12
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 11
- 239000003830 anthracite Substances 0.000 claims description 11
- 229910052602 gypsum Inorganic materials 0.000 claims description 11
- 239000010440 gypsum Substances 0.000 claims description 11
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 9
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000006477 desulfuration reaction Methods 0.000 claims description 6
- 230000023556 desulfurization Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 235000011132 calcium sulphate Nutrition 0.000 claims description 4
- 239000001175 calcium sulphate Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229910001422 barium ion Inorganic materials 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 17
- 239000000203 mixture Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 239000002699 waste material Substances 0.000 description 8
- 239000002802 bituminous coal Substances 0.000 description 6
- 239000002910 solid waste Substances 0.000 description 5
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 4
- 159000000009 barium salts Chemical class 0.000 description 4
- 239000003818 cinder Substances 0.000 description 4
- 239000002920 hazardous waste Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- -1 iron ion Chemical class 0.000 description 4
- 229910001415 sodium ion Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- HNBFUFIYQWYCDM-UHFFFAOYSA-N oxygen(2-) sulfane titanium(4+) Chemical compound [O--].[O--].S.[Ti+4] HNBFUFIYQWYCDM-UHFFFAOYSA-N 0.000 description 1
- 238000001139 pH measurement Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of barium dregs innocent treatment methods characterized by comprising (1) drains barium slag to be processed；(2) desulfurized gesso of flue gas is added into the barium slag drained.Barium slag is carried out using method of the invention the concentration of Leaching barium ions can be made greatly to reduce simultaneously corrosivity reduction after harmless treatment.
Description
Technical field
The invention belongs to industrial residue improvement and field of comprehensive utilization, in particular it relates to which a kind of circulation comprehensive is sharp
The method that harmless treatment is carried out to barium slag with desulfurized gesso of flue gas.
Background technique
Barium slag is using barite as obtained by the waste residue or the other barium salts of manufacture that raw material, pyrocarbon reduction generate after leaching
Barium slag.China has become the most important barium salt production base in the whole world, and acid-soluble barium and water-soluble barium are mainly contained in barium slag.
According to " National Hazard waste register ", barium slag belongs to dangerous solid waste, long-term to stack, and does not only take up a large amount of soils, and give environment
Bring pollution.Therefore barium slag harmlessness and its comprehensive cyclic utilization are the importances studied at present about barium slag.
Desulfurized gesso of flue gas is must to be taken off with sintering flue gas, power plant boiler flue gas etc. using desulfurization method of limestone-gypsum
Sulphur gypsum, limestone-gypsum method flue gas desulfurization account for 70% or more wet process of FGD, generate a large amount of desulfurized gypsums every year, big
Amount does not only take up a large amount of soils, and cause environment pollution using stockpiling processing is abandoned.How being turned waste into wealth, it is comprehensive to carry out
It is also China's Main Topics in recent years that conjunction, which utilizes,.
Barium slag harmlessness technique mainly uses saltcake, ferrous sulfate processing barium slag at present, and major defect is processing cost
Height, and bring sodium ion into, iron ion be unfavorable for downstream industry utilization.
Summary of the invention
Goal of the invention of the invention be for current barium dregs innocent treatment method processing cost it is high, bring into sodium ion,
Iron ion is unfavorable for the problem of downstream industry uses, and proposes a kind of circulation comprehensive using desulfurized gesso of flue gas to barium slag progress nothing
The method of evilization processing.
Specifically, the present invention is achieved through the following technical solutions:
A kind of barium dregs innocent treatment method, comprising:
(1) barium slag to be processed is drained；
(2) desulfurized gesso of flue gas is added into the barium slag drained.
Further, barium slag to be processed is that the barium sulphide grey black that barite is generated with anthracite roasting is leached through superheated water
It generates.
Further, the sulfur dioxide that barite is generated with anthracite roasting is absorbed with lime stone slurry, by being dehydrated
To desulfurized gesso of flue gas, it is used for step (2).
Further, the calcium sulphate content of the desulfurized gesso of flue gas is 70~100%, preferably 85~100%.
Further, in step (1), barium slag to be processed is drained into collected draining and is used to leach vulcanization after filtering
Barium grey black.
Further, in step (1), barium slag is drained into 0.5~5 day, preferably 1~2 day naturally.
Further, the water content of the barium slag drained is 5~30%, preferably 18~25%.
Further, in step (2), with the poidometer of the barium slag drained, the additional amount of desulfurized gesso of flue gas is 5~
25%, preferably 14~20%.
Further, it in step (2), is added desulfurized gesso of flue gas into the barium slag drained, stirs 1~60 minute, preferably 5
~20 minutes.
Compared with the prior art, technical solution of the present invention at least has the following beneficial effects:
Barium dregs innocent treatment method of the invention realizes treatment of wastes with processes of wastes against one another purpose, can be greatly reduced by process implementing
Barium slag harmlessness cost is fully able to realize that barium slag Leaching barium ions and corrosivity pH value are far below national environmental standard,
And calcium ion is conducive to the comprehensive utilization of the industries such as downstream such as cement, brickmaking.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of preferred embodiment of the present invention.
Specific embodiment
The present invention is done in detail by following specific embodiments for the purpose, feature and effect for fully understanding the present invention
Describe in detail bright, but the present invention is not restricted to this.Unless otherwise specified, " % " in the present invention refers both to " weight % ".
Processing cost in order to solve current barium dregs innocent treatment method is high, brings sodium ion into, under iron ion is unfavorable for
The problem of industry of parading uses, the invention proposes a kind of circulation comprehensives to carry out harmless treatment to barium slag using desulfurized gesso of flue gas
Method, comprising: (1) barium slag to be processed is drained；(2) desulfurized gesso of flue gas is added into the barium slag drained.
Processing method of the invention is primarily directed to prepare barium salt as raw material, by reducing agent of anthracite using barite
The barium slag generated in the process.As shown in Figure 1, in a preferred embodiment, barium dregs innocent treatment method needle of the invention
Pair barium slag be barite and barium sulphide grey black that anthracite roasts leaches to obtain barium slag through hot water, specifically, for example, to
The barium slag of processing is produced from following process:
By after crushed barite and anthracite according to 100:(15~25) weight ratio mix after be transported to converter, pass through
High-temperature roasting (1000~1400 DEG C) obtains barium sulphide grey black, and barium sulphide grey black is delivered in leaching can, while adding into tank
Enter hot water (such as 75 DEG C) and carry out barium sulphide leaching, water-soluble barium sulphide content is lower than 0.6% in the barium sulphide grey black after leaching
(weight) to get arrive barium slag to be processed.It leaches obtained barium sulfide solution and is used to prepare barium salt.
In above process, it relates generally to chemically react as follows:
BaSO4+2C→BaS+2CO2
S2 2-+2O2→2SO2
BaS+H2O→Ba(OH)2+Ba(HS)2
As shown in Figure 1, in a preferred embodiment, barium dregs innocent treatment method of the invention includes:
Firstly, barium slag to be processed is drained.
0.5~5 day, preferably 1~2 day can be drained for barium slag to be processed using draining naturally naturally by draining.
It is drained naturally for example, barium slag to be processed is transported to interim barium cinder field, nature is only needed to drain 0.5~5 day (preferably
1~2 day).Preferably, the draining generated during barium slag to be processed being drained returns after being collected, filtering through pipeline
Barium sulphide grey black leaches system, is used as leaching water, recycles to realize.Barium slag after draining is without special dehydration
Process, can be directly with the processing of barium slag harmlessness be transferred to, and the barium slag belongs to fresh barium slag, and epigranular is loose, without addition
Water, water content 5~30% (weight) are suitble to barium slag harmlessness.When draining naturally 1~2 day, barium slag water content 18~25%, especially
It is suitble to subsequent processing.
Then, desulfurized gesso of flue gas is added into the barium slag drained.
The calcium sulphate content of the desulfurized gesso of flue gas of use can be 70~100% (weight), and preferably 85~
100%.With the poidometer of the barium slag drained, the additional amount of desulfurized gesso of flue gas is 5~25%, preferably 14~20%.Cigarette is added
After desulfurization gypsum, stirring 1~60 minute, preferably 5~20 minutes, so that the two is sufficiently reacted.
Desulfurized gesso of flue gas can be self-produced desulfurized gesso of flue gas or thermal power plant or the flue gas desulfurization in other chemical plant
Gypsum.Preferably, the desulfurized gesso of flue gas that the present invention uses is self-produced desulfurized gesso of flue gas, it is, utilizing limestone-gypsum
Method, the sulfur dioxide that barite is generated with anthracite roasting process are absorbed with lime stone slurry, de- by vacuum belt dewaterer
Water obtains desulfurized gesso of flue gas.It should relate generally to chemically react as follows in the process:
CaCO3+SO2+H2O→CaSO4+CO2+H2O
Mixture after harmless treatment is pressed into GB 5085.3-2007 " hazardous waste standard of perfection-leaching characteristic identification "
Toxicity of lixivium barium ions and pH measurement are carried out with GB 5085.1-2007 " hazardous waste standard of perfection-corrosivity identifies ".Through
Its Leaching barium ions of barium slag 50mg/L after harmless treatment, pH value 12.0 are detected, testing result is far below GB
5085.3-2007 " hazardous waste standard of perfection-leaching characteristic identification " and GB 5085.1-2007 " hazardous waste standard of perfection-
Corrosivity identifies " hazard component concentration limit and pH of leaching solution requirement in leachate.
In addition, barium slag harmlessness method of the invention preferably uses self-produced desulfurized gesso of flue gas, thus realize waste treatment and waste,
The mixed economy environmental benefit of solid waste comprehensive utilization and substantially zero waste discharge.Due to avoiding barium slag harmlessness process
The downstreams such as middle addition sodium ion, iron ion use objectionable impurities, to be conducive to the rows such as downstream such as cement, brickmaking, wall filling
Industry is used, and the comprehensive utilization of the mixture of generation is more advantageous to.Also, after barium slag nature draining, it is not necessarily to dehydration device, is directly added
Desulfurized gesso of flue gas is added to carry out harmless treatment to barium slag, technique is relatively simple practical, low in cost.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions, or according to quotient
The selection of product specification.
Embodiment one
This is implemented targeted barium slag and is produced from following process:
By barite 920.2t (content 75%, barium yield 74%) and anthracite 184.04t (ash content %=after crushed
35) it is transported to converter after mixing according to 100:20 weight ratio, (1200 DEG C roast, while uniformly spraying into bituminous coal through high-temperature roasting
64.41t (ash content %=35, barite: bituminous coal=100:7)) barium sulphide grey black is obtained, barium sulphide is delivered in leaching can,
It is added simultaneously into tank and has been heated to 75 DEG C of hot water and carries out barium sulphide leaching, water-soluble vulcanization in the barium sulphide grey black after leaching
Barium content is lower than 0.23%, barium slag as to be processed.Meanwhile during being somebody's turn to do, what high-temperature roasting barite generated contains titanium dioxide
Sulphur flue gas is absorbed with lime stone slurry, is dehydrated to obtain desulfurized gesso of flue gas 119.88t (moisture %=by vacuum belt dewaterer
11, calcium sulfate weight content 86.3%).
The barium slag harmlessness treatment process of this implementation is as follows:
Barium slag to be processed is transported to interim barium cinder field to drain naturally 1 day, obtains barium slag 602t (moisture %=17), draining
It is recycled after collecting filtering through pipeline time grey black leaching system, the barium slag after draining is without special dehydration work
Sequence.Barium slag weight 602t (moisture %=17), wherein Leaching barium ions concentration is 1554ppm, pH value 11.6.
The portion desulfurized gesso of flue gas 119.88t is added in barium slag 602t, is matched as 100:20 (barium slag: flue gas desulfurization stone
Cream).The barium slag for adding desulfurized gesso of flue gas is mixed 5 minutes by helical feed agitating device or automatic turning device, is obtained
To mixed uniformly barium slag-desulfurized gypsum mixture.
Mixture is detected according to HJ/T299-2007 " solid waste Leaching leaching method sulfonitric method ",
Its Leaching barium ions concentration is 30.5ppm, pH value 9.5.
Embodiment two
This is implemented targeted barium slag and is produced from following process:
By barite 1278.34t (content 75%, barium yield 74%) and anthracite 191.46t (ash content % after crushed
=35) it is transported to converter after mixing according to 100:15 ratio, (1200 DEG C roast, while bituminous coal 89.48t is added through high-temperature roasting
(ash content %=35, barite: bituminous coal=100:7)) barium sulphide grey black is obtained, barium sulphide is delivered in leaching can, while to
It is added in tank and has been heated to 75 DEG C of hot water and carries out barium sulphide leaching, water-soluble barium sulphide content in the barium sulphide grey black after leaching
Lower than 0.19%, barium slag as to be processed.Meanwhile during being somebody's turn to do, what high-temperature roasting barite generated contains sulfur dioxide flue gas
It is absorbed with lime stone slurry, is dehydrated to obtain desulfurized gesso of flue gas 117.54t (CaSO by vacuum belt dewaterer4Weight content
84.5%, moisture weight content 14%).
The barium slag harmlessness treatment process of this implementation is as follows:
Barium slag is transported to interim barium cinder field and drains naturally 0.5 day, obtains barium slag 839.58t (moisture %=20), and draining is collected
It returns grey black leaching system through pipeline after filtering to be recycled, the barium slag after draining is without special dehydration procedure.
Barium slag weight 839.58t (moisture %=20), wherein Leaching barium ions concentration is 1888ppm, pH value 12.3.
By material adding set, desulfurized gesso of flue gas 117.54t is all added in barium slag 839.58t, is matched
For 100:14 (barium slag: desulfurized gesso of flue gas).The barium slag for adding desulfurized gesso of flue gas is stirred by helical feed agitating device
10 minutes, the barium slag-desulfurized gypsum mixture being uniformly mixed.
Mixture is detected according to HJ/T299-2007 " solid waste Leaching leaching method sulfonitric method ",
Its Leaching barium ions concentration is 5.9ppm, pH value 9.8.
Embodiment three
This is implemented targeted barium slag and is produced from following process:
By barite 2523.04t (content 76%, barium yield 74%) and anthracite 453.69t (ash content % after crushed
=35) it is transported to converter after mixing according to 100:18 ratio, (1200 DEG C roast, while bituminous coal 182.97t is added through high-temperature roasting
(ash content %=40, barite: bituminous coal=100:7)) barium sulphide grey black is obtained, barium sulphide is delivered in leaching can, while to
It is added in tank and has been heated to 75 DEG C of hot water and carries out barium sulphide leaching, water-soluble barium sulphide content in the barium sulphide grey black after leaching
It is 0.38%, barium slag as to be processed.Meanwhile during being somebody's turn to do, what high-temperature roasting barite generated uses containing sulfur dioxide flue gas
Lime stone slurry absorbs, and is dehydrated to obtain desulfurized gesso of flue gas 317.22t (CaSO by vacuum belt dewaterer4%=84, water
Divide %=12).
The barium slag harmlessness treatment process of this implementation is as follows:
Barium slag is transported to interim barium cinder field and drains naturally 1.5 days, obtains barium slag 1712.90t (moisture %=22), and draining is collected
It returns grey black leaching system through pipeline after filtering to be recycled, the barium slag after draining is without special dehydration procedure.
Barium slag weight 1712.90t (moisture %=22), wherein Leaching barium ions concentration is 1916ppm, pH value 12.2.
By material adding set, desulfurized gesso of flue gas 317.22t is all added in barium slag 1712.90t, and proportion is
(100:18.52 barium slag: desulfurized gesso of flue gas).The barium slag for adding desulfurized gypsum is stirred 20 points by helical feed agitating device
Clock, the barium slag-desulfurized gypsum mixture being uniformly mixed.
Mixture is detected according to HJ/T299-2007 " solid waste Leaching leaching method sulfonitric method ",
Its Leaching barium ions concentration is 3.8ppm, pH value 10.3.
From above-described embodiment as can be seen that toxicity barium ions is dense after using barium dregs innocent treatment method of the invention
Degree has obtained very big reduction, and innoxious barium ions removal efficiency reaches 98% or more, meanwhile, corrosivity pH value has also obtained very big drop
It is low.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any substitutions made without departing from the spirit and principles of the present invention, combination, change, are simplified modification
Deng should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. a kind of barium dregs innocent treatment method characterized by comprising
(1) barium slag to be processed is drained；
(2) desulfurized gesso of flue gas is added into the barium slag drained.
2. barium dregs innocent treatment method according to claim 1, which is characterized in that barium slag to be processed be barite with
The barium sulphide grey black that anthracite roasting generates is generated through superheated water leaching.
3. barium dregs innocent treatment method according to claim 2, which is characterized in that barite and anthracite roasting generate
Sulfur dioxide absorbed with lime stone slurry, obtain desulfurized gesso of flue gas by dehydration, be used for step (2).
4. described in any item barium dregs innocent treatment methods according to claim 1~3, which is characterized in that the flue gas desulfurization
The calcium sulphate content of gypsum is 70~100%, preferably 85~100%.
5. barium dregs innocent treatment method according to claim 2 or 3, which is characterized in that, will be to be processed in step (1)
Barium slag drain collected draining and be used to leach barium sulphide grey black after filtering.
6. barium dregs innocent treatment method according to claim 1, which is characterized in that in step (1), by barium to be processed
Slag drains 0.5~5 day, preferably 1~2 day naturally.
7. barium dregs innocent treatment method according to claim 1, which is characterized in that the water content of the barium slag drained is 5
~30%, preferably 18~25%.
8. barium dregs innocent treatment method according to claim 1, which is characterized in that in step (2), with the barium slag drained
Poidometer, the additional amount of desulfurized gesso of flue gas is 5~25%, preferably 14~20%.
9. barium dregs innocent treatment method according to claim 1, which is characterized in that in step (2), to the barium slag drained
Middle addition desulfurized gesso of flue gas stirs 1~60 minute, preferably 5~20 minutes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111320402A (en) * | 2020-03-30 | 2020-06-23 | 陕西富平生态水泥有限公司 | Cement production process capable of reducing chromium content in cement |
| CN111544822A (en) * | 2020-04-13 | 2020-08-18 | 上海圣珑环境修复技术有限公司 | Barium slag stabilizing treatment method |
| CN114956616A (en) * | 2022-06-14 | 2022-08-30 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Method and device for preparing mixed material for cement plant by recycling barium slag |
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| CN111544822A (en) * | 2020-04-13 | 2020-08-18 | 上海圣珑环境修复技术有限公司 | Barium slag stabilizing treatment method |
| CN114956616A (en) * | 2022-06-14 | 2022-08-30 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Method and device for preparing mixed material for cement plant by recycling barium slag |
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