CN109824808A - For accelerating the flocculant preparation method of ultra-fine tailing sedimentation - Google Patents
For accelerating the flocculant preparation method of ultra-fine tailing sedimentation Download PDFInfo
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- CN109824808A CN109824808A CN201811584592.0A CN201811584592A CN109824808A CN 109824808 A CN109824808 A CN 109824808A CN 201811584592 A CN201811584592 A CN 201811584592A CN 109824808 A CN109824808 A CN 109824808A
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Abstract
The invention discloses a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, and its step are as follows: (1) being added hydroxyethyl cellulose and deionized water into reaction flask, heating stirring is to being completely dissolved；(2) ethylenediamine tetra-acetic acid is added, quantitative initiator is added under nitrogen protection, pH value adjustment, isothermal reaction are carried out to reaction system with maleic acid；(3) polymerization temperature is controlled, acrylamide monomer is added and carries out polymerization reaction；(4) by reaction product after precipitating, washing, vacuum drying up to target product.Flocculant prepared by the method for the present invention can obviously accelerate ultra-fine tailing sedimentation, save the dosage of flocculant.
Description
Technical field
The present invention relates to tailing Treatment process fields, and in particular to a kind of for accelerating the flocculant system of ultra-fine tailing sedimentation
Preparation Method.
Background technique
Dehydration is essential link in tailing governance process, it is however generally that, filters pressing and concentration be tailings dewatering master
Want approach, concentration due to treating capacity is big, low energy consumption and by favor.Tailing needs to add flocculant in concentrator concentration process
It just can be carried out efficient separation of solid and liquid, this is because flocculant can effectively accelerate the free-falling velocity of tailing to remove overflow
Solid suspended particle in water, thus it is widely used in tail dehydration field, the flocculating effect of tailing is related to separation of solid and liquid process
Reagent cost, recycling water utilization, in green emissions etc..However tailings particles size is multifarious, the effect of flocculant is also not to the utmost
It is identical.
Influencing the maximum factor of tailing flocculating setting effect is exactly tailings particles size and optimal sedimentation concentration.It is general and
Speech, tailings particles are partially thick, and sinking speed is fast, and optimal sedimentation concentration is bigger than normal, and vice versa.For ultra-fine tailing, in
A large amount of ultrafine solids suspended matter is contained in portion, forms stable double electrical layers with water, after conventional flocculant is added, sedimentation speed
Degree is still very slow, if the dosage for increasing flocculant by force will lead to subsequent tailing depth although will increase sinking speed
The difficulty of dehydration；The even ultra-fine tailing in part is similar with the physicochemical property of municipal sludge, the property with colloid, in water very
Stablize, common conventional organic flocculant is difficult to change double electrical layers, causes to be added after conventional flocculant in vain.For such
Ultra-fine tailing carries out flocculating setting, in order to obtain faster sinking speed, it is necessary first to which the mass concentration of tailing is diluted in 5%
Hereinafter, adding flocculation aid, it is eventually adding more flocculant, causes reagent consumption amount higher in this way, and complex process.
Summary of the invention
It is a kind of for accelerating the flocculant of ultra-fine tailing sedimentation the purpose of the present invention is in view of the deficiencies of the prior art, proposing
Preparation method.
The present invention solves its technical problem and adopts the following technical solutions to achieve:
A kind of flocculant preparation method settled for accelerating ultra-fine tailing, including following preparation step:
(1) hydroxyethyl cellulose and deionized water are added into reaction flask, heating stirring is to being completely dissolved；
(2) ethylenediamine tetra-acetic acid is added, quantitative initiator is added under nitrogen protection, pH is carried out to reaction system with maleic acid
Value adjustment, isothermal reaction；
(3) polymerization temperature is controlled, acrylamide monomer is added and carries out polymerization reaction；
(4) by reaction product after precipitating, washing, vacuum drying up to target product.
2. further, the additional amount of hydroxyethyl cellulose described in step (1) is the 2~15% of total monomer quality；Dissolution
Temperature is 30~60 DEG C.
3. further, the additional amount of ethylenediamine tetra-acetic acid described in step (2) is the 1~5% of total monomer quality；It is described
Initiator is redox initiator；The matter of oxidant and reducing agent ratio is 1:1~1:5, it is preferable that oxidant is persulfuric acid
Sodium, reducing agent are potassium bisulfite, and mass ratio is 1:1~1:3.
4. further, initiator amount described in step (2) is the 0.01~1% of total monomer weight；PH value of reaction system
It is adjusted to 1~5.
5. further, temperature of reaction system is 30~60 DEG C in step (2), and the reaction time is 30~150 minutes.
6. further, polymerization temperature is 50~90 DEG C in step (3), and polymerization time is 20~200 minutes.
7. further, precipitating reagent is acetone in step (4)；Detergent is one of ethylene glycol, glacial acetic acid, ethanedioic acid
Or several mixture.
The invention has the advantages that:
(1) prior art is compared, the flocculant of preparation method preparation provided by the invention can change the electrostatic in ultra-fine tailing point
Cloth makes in tailing ultra-fine grain flocculate rapidly agglomerating, improves sinking speed, and addition flocculation aid is not needed in use process, is simplified
Process flow.
(2) flocculant provided by the invention is widely used, and not only can be applied to different classes of ore pulp, but also can be used for different
The ore pulp of grain fineness, is particularly suitable for working condition and fluctuates in frequent ore-dressing technique, compared with conventional flocculant, dosage is more
It is low.
Specific embodiment
The flocculant preparation method specific embodiment for accelerating ultra-fine tailing sedimentation a kind of to the present invention is made detailed below
It describes in detail bright.For the purpose of embodiment is merely illustrative, its protection scope is not limited.
Embodiment 1
(1) hydroxyethyl cellulose and deionized water for accounting for total monomer quality 5% are added into reaction flask, is heated to 40 DEG C of stirrings extremely
It is completely dissolved；
(2) ethylenediamine tetra-acetic acid for accounting for total monomer quality 1% is added, the mistake for accounting for total monomer quality 0.1% is added under nitrogen protection
Sodium sulphate and potassium bisulfite are as initiator, and wherein sodium peroxydisulfate and potassium bisulfite mass ratio are 1:1；It will be anti-with maleic acid
Answer system carry out pH value be adjusted to 2.5,40 DEG C isothermal reaction 30 minutes；
(3) control polymerization temperature is 60 DEG C, and acrylamide monomer is added and carries out polymerization reaction, the reaction time is 80 minutes；
(4) by reaction product after acetone precipitation, the ethylene glycol that volume ratio is 1:1 and glacial acetic acid washing, vacuum drying up to mesh
Mark product.
Embodiment 2
(1) hydroxyethyl cellulose and deionized water for accounting for total monomer quality 6% are added into reaction flask, is heated to 45 DEG C of stirrings extremely
It is completely dissolved；
(2) ethylenediamine tetra-acetic acid for accounting for total monomer quality 1.3% is added, is added accounts for total monomer quality 0.12% under nitrogen protection
Sodium peroxydisulfate and potassium bisulfite are as initiator, and wherein sodium peroxydisulfate and potassium bisulfite mass ratio are 1:1.2；Use maleic acid
By reaction system progress pH value be adjusted to 2.6,45 DEG C isothermal reaction 38 minutes；
(3) control polymerization temperature is 65 DEG C, and acrylamide monomer is added and carries out polymerization reaction, the reaction time is 90 minutes；
(4) by reaction product after acetone precipitation, ethylene glycol washing, vacuum drying up to target product.
Embodiment 3
(1) hydroxyethyl cellulose and deionized water for accounting for total monomer quality 6.5% are added into reaction flask, is heated to 50 DEG C of stirrings
To being completely dissolved；
(2) ethylenediamine tetra-acetic acid for accounting for total monomer quality 1.5% is added, is added accounts for total monomer quality 0.15% under nitrogen protection
Sodium peroxydisulfate and potassium bisulfite are as initiator, and wherein sodium peroxydisulfate and potassium bisulfite mass ratio are 1:1.3；Use maleic acid
By reaction system progress pH value be adjusted to 2.7,50 DEG C isothermal reaction 40 minutes；
(3) control polymerization temperature is 70 DEG C, and acrylamide monomer is added and carries out polymerization reaction, the reaction time is 95 minutes；
(4) by reaction product after acetone precipitation, glacial acetic acid washing, vacuum drying up to target product.
Embodiment 4
(1) hydroxyethyl cellulose and deionized water for accounting for total monomer quality 7% are added into reaction flask, is heated to 55 DEG C of stirrings extremely
It is completely dissolved；
(2) ethylenediamine tetra-acetic acid for accounting for total monomer quality 1.7% is added, is added accounts for total monomer quality 0.18% under nitrogen protection
Sodium peroxydisulfate and potassium bisulfite are as initiator, and wherein sodium peroxydisulfate and potassium bisulfite mass ratio are 1:1.5；Use maleic acid
By reaction system progress pH value be adjusted to 2.9,55 DEG C isothermal reaction 45 minutes；
(3) control polymerization temperature is 75 DEG C, and acrylamide monomer is added and carries out polymerization reaction, the reaction time is 100 minutes；
(4) by reaction product after acetone precipitation, the ethylene glycol that volume ratio is 1:1 and ethanedioic acid washing, vacuum drying up to mesh
Mark product.
Embodiment 5
(1) hydroxyethyl cellulose and deionized water for accounting for 7.8 % of total monomer quality are added into reaction flask, is heated to 58 DEG C of stirrings
To being completely dissolved；
(2) ethylenediamine tetra-acetic acid for accounting for total monomer quality 2.0% is added, is added accounts for total monomer quality 0.2% under nitrogen protection
Sodium peroxydisulfate and potassium bisulfite are as initiator, and wherein sodium peroxydisulfate and potassium bisulfite mass ratio are 1:1.8；Use maleic acid
By reaction system progress pH value be adjusted to 3.0,58 DEG C isothermal reaction 50 minutes；
(3) control polymerization temperature is 78 DEG C, and acrylamide monomer is added and carries out polymerization reaction, the reaction time is 110 minutes；
(4) by reaction product after acetone precipitation, ethylene glycol washing, vacuum drying up to target product.
Table 1 is the main preparation condition of embodiment:
The main preparation condition of each embodiment of table 1
Comparative example 1
(1) hydroxyethyl cellulose and deionized water for accounting for total monomer quality 3% are added into reaction flask, is heated to 40 DEG C of stirrings extremely
It is completely dissolved；
(2) ethylenediamine tetra-acetic acid for accounting for total monomer quality 0.5% is added, is added accounts for total monomer quality 0.1% under nitrogen protection
Sodium peroxydisulfate and potassium bisulfite are as initiator, and wherein sodium peroxydisulfate and potassium bisulfite mass ratio are 1:1；With maleic acid pair
Reaction system carry out pH value be adjusted to 2.5,40 DEG C isothermal reaction 30 minutes；
(3) control polymerization temperature is 60 DEG C, and acrylamide monomer is added and carries out polymerization reaction, the reaction time is 80 minutes；
(4) by reaction product after acetone precipitation, the ethylene glycol that volume ratio is 1:1 and glacial acetic acid washing, vacuum drying up to mesh
Mark product.
Comparative example 2
Comparative example 2 is substantially the same manner as Example 1, is a difference in that potassium peroxydisulfate and potassium bisulfite mass ratio is 0.5:1.
Comparative example 3
Comparative example 3 is substantially the same manner as Example 2, is a difference in that ethylenediamine tetra-acetic acid additional amount accounts for the 6% of total monomer quality.
Evaluation test
Test method: using the ultra-fine tailing of certain gold mine as research object, taillings particle size distribution such as table 2, pulp density is diluted to 5%,
Examples 1 to 5, comparative example 1~3 and flocculation aid+conventional flocculant are added in ore pulp, wherein the quality of flocculating agent formulation
Concentration is 0.1%, flocculant usage 10g/t, 15g/t, 20g/t, using 1000mL graduated cylinder as sedimentation device, using manual time-keeping,
Record clarification interface reaches the time at 500mL scale, test result such as table 3.
The ultra-fine taillings particle size of 2 certain gold mine of table is distributed
The test result of the different flocculants of table 3
From the point of view of the test result of table 3: comparison flocculation aid+conventional flocculant, using made from preparation method provided by the invention
Flocculant in same dosage, obviously accelerate by sinking speed, and supernatant can equally achieve the effect that limpid.
A specific embodiment of the invention is described in detail and is illustrated above, but protection scope of the present invention is simultaneously
Not limited to this, anyone skilled in the art is changed or on an equal basis in the technical scope disclosed by the present invention
Replacement, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, which is characterized in that specifically include following preparation step
It is rapid:
(1) hydroxyethyl cellulose and deionized water are added into reaction flask, heating stirring is to being completely dissolved；
(2) ethylenediamine tetra-acetic acid is added, quantitative initiator is added under nitrogen protection, pH is carried out to reaction system with maleic acid
Value adjustment, isothermal reaction；
(3) polymerization temperature is controlled, acrylamide monomer is added and carries out polymerization reaction；
(4) by reaction product after precipitating, washing, vacuum drying up to target product.
2. according to claim 1 a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, it is characterised in that:
The additional amount of the hydroxyethyl cellulose is the 2~15% of total monomer quality；Solution temperature is 30~60 DEG C.
3. according to claim 1 a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, it is characterised in that:
The additional amount of the ethylenediamine tetra-acetic acid is the 1~5% of total monomer quality；The initiator is redox initiator；Oxidant
Mass ratio with reducing agent is 1:1~1:5.
4. according to claim 1 a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, it is characterised in that:
Step (3) polymerization temperature is 50~90 DEG C, and polymerization time is 20~200 minutes.
5. according to claim 1 a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, it is characterised in that:
Step (4) precipitating reagent is acetone；Detergent is the mixture of one or more of ethylene glycol, glacial acetic acid, ethanedioic acid.
6. according to claim 1 a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, it is characterised in that:
Temperature of reaction system is 30~60 DEG C, and the reaction time is 30~150 minutes.
7. according to claim 1 or 3 a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, feature exists
In: the initiator amount is the 0.01~1% of total monomer weight；The pH value of reaction system is adjusted to 1~5.
8. according to claim 6 a kind of for accelerating the flocculant preparation method of ultra-fine tailing sedimentation, it is characterised in that:
Temperature of reaction system is 30~60 DEG C, and the reaction time is 30~150 minutes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115925161A (en) * | 2022-11-29 | 2023-04-07 | 山东中移能节能环保科技股份有限公司 | Deep treatment method of coking wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5919882A (en) * | 1988-12-19 | 1999-07-06 | Cytec Technology Corp. | High performance anionic polymeric flocculating agents |
| CN105384874A (en) * | 2015-11-19 | 2016-03-09 | 威海汉邦生物环保科技有限公司 | Preparation method of water-in-water emulsion-type cation polysaccharide biological flocculant |
| CN108483605A (en) * | 2018-03-15 | 2018-09-04 | 南京工业大学 | A kind of preparation method of modified natural polysaccharide heavy metal chelating trapping flocculant |
-
2018
- 2018-12-24 CN CN201811584592.0A patent/CN109824808A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5919882A (en) * | 1988-12-19 | 1999-07-06 | Cytec Technology Corp. | High performance anionic polymeric flocculating agents |
| CN105384874A (en) * | 2015-11-19 | 2016-03-09 | 威海汉邦生物环保科技有限公司 | Preparation method of water-in-water emulsion-type cation polysaccharide biological flocculant |
| CN108483605A (en) * | 2018-03-15 | 2018-09-04 | 南京工业大学 | A kind of preparation method of modified natural polysaccharide heavy metal chelating trapping flocculant |
Non-Patent Citations (1)
| Title |
|---|
| 易俊霞等: "羟乙基纤维素接枝丙烯酰胺共聚物的合成及表征", 《塑料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115925161A (en) * | 2022-11-29 | 2023-04-07 | 山东中移能节能环保科技股份有限公司 | Deep treatment method of coking wastewater |
| CN115925161B (en) * | 2022-11-29 | 2023-12-19 | 山东中移能节能环保科技股份有限公司 | Deep treatment method of coking wastewater |
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