CN103253749A - Method for rapid settlement of magnesium oxide particles in circulating water - Google Patents
Method for rapid settlement of magnesium oxide particles in circulating water Download PDFInfo
- Publication number
- CN103253749A CN103253749A CN2012100340856A CN201210034085A CN103253749A CN 103253749 A CN103253749 A CN 103253749A CN 2012100340856 A CN2012100340856 A CN 2012100340856A CN 201210034085 A CN201210034085 A CN 201210034085A CN 103253749 A CN103253749 A CN 103253749A
- Authority
- CN
- China
- Prior art keywords
- groove
- recirculated water
- magnesium oxide
- coagulant aids
- overflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for rapid settlement of magnesium oxide particles in circulating water. The method comprises the steps of: making circulating water in a scrubbing groove overflow to a relay groove; employing an extraction device to send the circulating water from the relay groove to a stirring groove by a pipeline, and simultaneously adding an coagulant aid to the pipeline between the relay groove and the stirring groove from a place close to the stirring groove, adding a flocculating agent into the stirring groove, then using a stirring rod to stir them fully; after complete stirring, letting the circulating water overflow to at least one settlement groove to undergo settlement, discharging settled magnesium oxide sludge from the settlement groove, and making the settled circulating water outflow from an overflow port of the settlement groove. Specifically, the effective components of the coagulant aid comprise: 10-15wt% of a polyamine organic matter and 10-15wt% of hydroxy aluminum chloride. And the effective component of the flocculating agent is a polyacrylamide copolymer.
Description
Technical field
The present invention relates to a kind of particulate matter sedimentation method, relate in particular to a kind of sedimentation method of magnesium oxide particle.
Background technology
In order to make the oriented silicon steel surface form insulating property and the magnetic property of distinctive Magnesium Silicate q-agent bottom to improve oriented silicon steel behind high temperature annealing, belt steel surface must apply magnesium oxide coating after decarburizing annealing.But the magnesium oxide coating of belt steel surface has only 3～15% to participate in the formation of Magnesium Silicate q-agent bottom, and remaining magnesium oxide particle must scrub clean in the operation of back, could apply the inorganic insulation coating then.And these are scrubbed the remaining magnesium oxide particle that gets off and mix with water and form magnesium oxide muddy water suspension liquid, and carry out precipitate and separate in the recycle system settling tank along with recirculated water enters to scrub.
Fig. 1 has shown that existing magnesium oxide does the wash the structure of the recycle system.As shown in Figure 1, band steel 1 is scrubbed at the online groove 2 of scrubbing of magnesium oxide, is scrubbed the magnesium oxide that gets off along with recirculated water is back in the muddy water relaying groove 3, is sent in the steel basin 7 by spiral pump 5 and pipeline 6 then, stirs by agitator arm 8.Magnesium oxide suspension liquid through stirring overflows in the settling bath 9.In settling bath 9, magnesium oxide particle is precipitated to bottom land by swash plate system 10, and most of water on upper strata overflows to clear water relaying groove 4 through post precipitation, enters magnesium oxide then and does the wash cycling and reutilization in the recycle system; Lower floor's magnesium oxide muddy water is pumped to whizzer 12 by the spiral pump 11 of bottom land and carries out mud-water separation, and the magnesium oxide mud of separation enters into mud bucket 13; The water of separating enters into clear water relaying groove 4, does the wash the recycle system and carries out recycle thereby enter into magnesium oxide.
But there is following problem in this cover system:
(1) because online circulating water flow is bigger, is about 80～250m
3/ h is far longer than the discharge of general water treatment system, and this can cause also the magnesium oxide particle of not sedimentation to flow in the online brushing system with recirculated water again, thereby has influence on the efficient of scrubbing to belt steel surface;
(2) compare with the outstanding absurd creature in the general sewage, magnesium oxide particle too tiny (10～50 μ m), be difficult to timely sedimentation, therefore easily along with recirculated water enters into return line, and accumulate in some valves or corner, cause each position of the recycle system all can occur stopping up and the mud accumulation, thereby cause the unit disorderly closedown, the efficient of production and the quality of product are caused great influence;
(3) through producing for a long time, accumulate in a large number magnesium oxide particle on the swash plate can make swash plate pitch smaller in addition stop up, thereby greatly reduce the swash plate processing power, make magnesium oxide particle more be difficult to sedimentation.Therefore, the magnesium oxide particle that suspends in recirculated water rolls up, and also can't slow down magnesium oxide particle in the recirculated water even often change water, thereby cause the environment in the recycle system further to worsen, and discharge reduces, and will cause the industrial accident of cutting off the water supply when serious.
The method of domestic existing processing magnesium oxide suspension liquid is to adopt bigger settling tank, and the precipitation by the long period, then the water that overflows is carried out other utilizations.This method has problems equally: because discharge is bigger, need settling tank and the parking space of big volume; However, still have the tiny magnesium oxide particle of part along with water overflows in the recycle system.
Summary of the invention
The object of the present invention is to provide a kind of method that makes the magnesium oxide particle rapid subsidence in the recirculated water, this rapid subsidence method should be fast and is fully precipitated magnesium oxide particle in the recirculated water, guarantee the quality of recirculated water, when elimination magnesium oxide is scrubbed the accident potential of cutting off the water supply in the recycle system, improve the quality that magnesium oxide is scrubbed.
According to the foregoing invention purpose, the invention provides a kind of method that makes the magnesium oxide particle rapid subsidence in the recirculated water, it comprises the following steps:
In recirculated water overflow to a relaying groove of scrubbing in the groove;
Adopt a draw-out device that recirculated water is delivered to the steel basin by pipeline from the relaying groove, in the pipeline between relaying groove and the steel basin, adding coagulant aids near the steel basin place simultaneously, and in steel basin, adding flocculation agent, adopt an agitator arm fully to stir then;
Carry out sedimentation through well-beaten recirculated water overflow at least one settling bath, discharge settling bath through the magnesium oxide mud of sedimentation, the recirculated water of process sedimentation is flowed out by the overflow port of settling bath;
Wherein, the effective constituent of coagulant aids is: the polyamine type organic, and it accounts for the 10-15wt% of coagulant aids; Aluminium chlorohydroxide, it accounts for the 10-15wt% of coagulant aids; The addition of coagulant aids is every cubic metre of recirculated water 20-200ppm;
Wherein, the effective constituent of flocculation agent is polyacrylamide copolymer, and its addition is every cubic metre of recirculated water 0.5-20ppm.
In the technical program, the main effect of coagulant aids is the neutralizing effect by electric charge, assembles tiny magnesium oxide particle, forms a large amount of subsets; The main effect of flocculation agent is under the stirring of agitator arm, makes the further polymerization of a large amount of magnesium oxide subsets that form through coagulant aids in the recirculated water generate the macromolecular mass floss, thereby can precipitate fast.
In order further to strengthen the effect of settling of magnesium oxide particle, in above-mentioned method, adopt a dividing plate that described settling bath is divided into first part and a second section, and some swash plates are set in second section, through well-beaten recirculated water at first overflow and under the effect of swash plate, carry out sedimentation to described first part.Through the post precipitation of first part and second section, the magnesium oxide particle in the recirculated water is precipitated fully, thereby makes the quality of recirculated water further get a promotion.
The method that makes the magnesium oxide particle rapid subsidence in the recirculated water of the present invention is by interpolation coagulant aids and flocculation agent, and while enhanced system sedimentation capacity, and it is compared with existing sedimentation method, has following advantage:
(1) technical solutions according to the invention can significantly improve settling velocity and the sedimentation capacity of magnesium oxide particle, make the quality of recirculated water significantly improve, thereby have strengthened the scrub efficient of equipment to belt steel surface effectively;
(2) quality owing to recirculated water significantly improves, thereby has eliminated the unit fault that is caused by magnesium oxide mud accumulation in the recirculated water, has guaranteed the ordinary production of unit.
Description of drawings
Fig. 1 is the structural representation that original magnesium oxide is done the wash the recycle system.
Fig. 2 implements the magnesium oxide of the method for the magnesium oxide particle rapid subsidence in the recirculated water that makes of the present invention to do the wash the structural representation of the recycle system under a kind of embodiment.
Fig. 3 is the schema of method under a kind of embodiment that makes the magnesium oxide particle rapid subsidence in the recirculated water of the present invention.
Embodiment
Fig. 2 has shown that implementing the magnesium oxide of the magnesium oxide particle rapid subsidence method in the recirculated water that makes of the present invention does the wash recycle system structure in the present embodiment.Fig. 3 has shown the magnesium oxide particle rapid subsidence method flow process in the present embodiment that makes in the recirculated water of the present invention.In conjunction with Fig. 2, Fig. 3, the concrete steps of the described technical scheme of present embodiment are as follows:
(1) scrubs scrubbing 2 pairs of grooves band steel 1;
(2) scrub recirculated water overflow in the groove 2 to muddy water relaying groove 3;
(3) spiral pump 5 is delivered to steel basin 7 from muddy water relaying groove 3 by pipeline 6 with recirculated water, adds coagulant aids for 6 li at the pipeline near steel basin 7 places simultaneously; Coagulant aids is stored in the coagulant aids holding tank 17, and joins in the pipeline 6 by coagulant aids solution feed pump 16;
(4) in steel basin 7, add flocculation agent, adopt agitator arm 8 fully to stir then; Flocculation agent is stored in the flocculation agent holding tank 15, and joins in the steel basin 7 by flocculation agent solution feed pump 14;
(5) to the first part 18 of settling bath 9, carry out rapid subsidence through well-beaten recirculated water overflow; Magnesium oxide mud under the sedimentation is deposited in the bottom of settling bath 9;
(6) the recirculated water overflow of process first part 18 rapid subsidence is carried out further sedimentation under the effect of swash plate system 10 to the second section 19 of settling bath 9; Mud in the same step of magnesium oxide mud (5) under the sedimentation under the sedimentation is deposited in the bottom of settling bath 9 together;
(7a) after the sedimentation of completing steps (6), the clear water overflow on upper strata is to clear water relaying groove 4;
(7b) after the sedimentation of completing steps (6), the magnesium oxide mud of lower floor is transported to whizzer 12 by spiral pump 11, carries out mud-water separation;
(8a) after the mud-water separation of finishing (7b), clear water is sent in the clear water relaying groove 4;
(8b) after the mud-water separation of finishing (7b), mud is sent in the mud bucket 13;
(9) clear water in the clear water relaying groove 4 is delivered to scrubbed groove 2, get back to step (1).
In each embodiment of the technical program, the effective constituent of the coagulant aids in the step (3) is: poly-tetramine organism (B
4H
10N), it accounts for the 10-15wt% of coagulant aids; Aluminium chlorohydroxide, it accounts for the 10-15wt% of coagulant aids; The addition of coagulant aids is that to make the concentration of coagulant aids in the recirculated water be 20-200ppm.The magnesium oxide suspension liquid that adds coagulant aids carries out preliminary hybrid reaction in pipeline, generate a large amount of subsets.
In each embodiment of the technical program, the effective constituent of the flocculation agent in the step (4) is a kind of highly purified cationic polyacrylamide (PAM), and its molecular formula is (CH
2CHCONH
2)
x, be white powder, earlier it is mixed with solution before using, join then in the steel basin, its addition is that to make the concentration of recirculated water flocculation agent be 0.5-20ppm.And under effective stirring of agitator arm, carry out further hybrid reaction, generate the macromolecular mass floss, thereby can precipitate fast.
Table 1 has been listed the interpolation parameter of coagulant aids and flocculation agent among the embodiment 1-5 of the technical program.
Table 1.
In addition, in order to guarantee the settling efficiency of swash plate system, the influence that its mud of not piled up is thickened is preferably carried out once flushing every 2～4 weeks to the swash plate system; (organic content≤10ppm and chloride ion content≤300ppm), (quantity of exchanged water is 10～60m preferably quantitatively to change water in per two days in order to ensure the clean-up performance of recirculated water
3), and every 1～4 week recirculated water is taken a sample and to detect monitoring (monitored results sees Table 1).
Table 1.
By table 1 as seen, adopt the described rapid subsidence method of the technical program can effectively improve the quality of recirculated water, make its requirement of scrubbing of satisfying oriented silicon steel surface oxidation magnesium, and system is not had a negative impact.
Be noted that above enumerate only for specific embodiments of the invention, obviously the invention is not restricted to above embodiment, many similar variations are arranged thereupon.If those skilled in the art all should belong to protection scope of the present invention from all distortion that content disclosed by the invention directly derives or associates.
Claims (2)
1. a method that makes the magnesium oxide particle rapid subsidence in the recirculated water is characterized in that, comprises the following steps:
In recirculated water overflow to a relaying groove of scrubbing in the groove;
Adopt a draw-out device that recirculated water is delivered to the steel basin by pipeline from described relaying groove, in the pipeline between relaying groove and the steel basin, adding coagulant aids near the steel basin place simultaneously, and in described steel basin, add flocculation agent, adopt an agitator arm fully to stir then;
Carry out sedimentation through well-beaten recirculated water overflow at least one settling bath, discharge settling bath through the magnesium oxide mud of sedimentation, the recirculated water of process sedimentation is flowed out by the overflow port of settling bath;
Wherein, the effective constituent of described coagulant aids is: the polyamine type organic, and it accounts for the 10-15wt% of coagulant aids; Aluminium chlorohydroxide, it accounts for the 10-15wt% of coagulant aids; The addition of described coagulant aids is that the concentration of coagulant aids in the recirculated water is 20-200ppm;
Wherein, the effective constituent of described flocculation agent is polyacrylamide copolymer, and its addition is that the concentration of flocculation agent in the recirculated water is 0.5-20ppm.
2. the method for claim 1 is characterized in that:
Adopt a dividing plate that described settling bath is divided into first part and a second section, and some swash plates are set in described second section, the well-beaten recirculated water of described process at first overflow and carries out sedimentation to described first part under the effect of swash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034085.6A CN103253749B (en) | 2012-02-15 | 2012-02-15 | Method for rapid settlement of magnesium oxide particles in circulating water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034085.6A CN103253749B (en) | 2012-02-15 | 2012-02-15 | Method for rapid settlement of magnesium oxide particles in circulating water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103253749A true CN103253749A (en) | 2013-08-21 |
| CN103253749B CN103253749B (en) | 2014-03-05 |
Family
ID=48958029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210034085.6A Active CN103253749B (en) | 2012-02-15 | 2012-02-15 | Method for rapid settlement of magnesium oxide particles in circulating water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103253749B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981000A (en) * | 2019-11-20 | 2020-04-10 | 武汉钢铁有限公司 | Method for treating silicon steel magnesium oxide wastewater |
| CN114105232A (en) * | 2020-08-30 | 2022-03-01 | 宝山钢铁股份有限公司 | Silicon steel magnesium oxide wastewater treatment and recycling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117250A (en) * | 2007-06-01 | 2008-02-06 | 华电水处理技术工程有限公司 | Method and equipment for purifying recirculated cooling water or town B-grade sewage |
| US20080217244A1 (en) * | 2005-09-30 | 2008-09-11 | Otv Sa | Water Treatment Method Comprising a Rapid Settling Step Followed by a Filtration Step Directly on Micro- or Ultra-filtration Membranes, and Corresponding Device |
| CN102267751A (en) * | 2010-10-26 | 2011-12-07 | 苏木清 | Rapid precipitation and concentration tank for tailing sewage |
-
2012
- 2012-02-15 CN CN201210034085.6A patent/CN103253749B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080217244A1 (en) * | 2005-09-30 | 2008-09-11 | Otv Sa | Water Treatment Method Comprising a Rapid Settling Step Followed by a Filtration Step Directly on Micro- or Ultra-filtration Membranes, and Corresponding Device |
| CN101117250A (en) * | 2007-06-01 | 2008-02-06 | 华电水处理技术工程有限公司 | Method and equipment for purifying recirculated cooling water or town B-grade sewage |
| CN102267751A (en) * | 2010-10-26 | 2011-12-07 | 苏木清 | Rapid precipitation and concentration tank for tailing sewage |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981000A (en) * | 2019-11-20 | 2020-04-10 | 武汉钢铁有限公司 | Method for treating silicon steel magnesium oxide wastewater |
| CN114105232A (en) * | 2020-08-30 | 2022-03-01 | 宝山钢铁股份有限公司 | Silicon steel magnesium oxide wastewater treatment and recycling method |
| CN114105232B (en) * | 2020-08-30 | 2023-09-12 | 宝山钢铁股份有限公司 | Silicon steel magnesium oxide wastewater treatment and recycling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103253749B (en) | 2014-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102815831B (en) | Device and method for treating heavy metal wastewater and recovering heavy metal | |
| CN107698088A (en) | Magnetic-coagulation precipitates method for purifying water and device | |
| CN102730888B (en) | High hardness and high turbidity industry wastewater treatment method | |
| CN101891312A (en) | Large manual sandstone factory wastewater treatment process | |
| CN104876392A (en) | Coating wastewater treatment process | |
| CN102887570A (en) | Micro-electrolysis reaction technique of iron carbon filler three-phase circulating fluidized bed and reactor | |
| CN105366850A (en) | Electronic coagulation process and facility for coal-bearing wastewater | |
| CN102583871A (en) | Method for removing copper ions from circuit board waste water | |
| CN103253749B (en) | Method for rapid settlement of magnesium oxide particles in circulating water | |
| CN204079666U (en) | One is applied to shale gas recirculation water circulation and stress treatment unit | |
| CN103288241B (en) | Waste water circulation cooling two-stage clarifying and softening system | |
| CN105384230A (en) | Cellulose wastewater pretreatment apparatus and application thereof | |
| CN203238128U (en) | Integrated multipole electrochemical water treatment equipment | |
| CN203346204U (en) | Circulating cooling two-stage clarification and softening system for waste water | |
| CN102605114A (en) | Slag flushing process and system for ironmaking | |
| CN103058422A (en) | Technique for fluorite mine floatation sewage treatment | |
| CN103121741A (en) | Treatment method of filter backwash wastewater | |
| CN102229450A (en) | Integrated membrane purification technology for treating hematite dressing wastewater | |
| CN201857296U (en) | Multilevel sloping plate water treatment device | |
| CN212924676U (en) | Silicon-containing wastewater treatment system | |
| CN110713323B (en) | Coal mine wastewater treatment system and process | |
| CN204356189U (en) | Ni-containing Plating Wastewater pre-treatment and nickel retrieving arrangement | |
| CN210193576U (en) | Waste water treatment device in coating process | |
| CN102557386A (en) | Sludge disposal method for circulating water of coal gas station of alumina plant | |
| CN103285626A (en) | Processing method of magnesium oxide suspension |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |