CN110395868A - Cold-rolled lubricating oil mud resource handles recycling iron powder technique - Google Patents

Cold-rolled lubricating oil mud resource handles recycling iron powder technique Download PDF

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Publication number
CN110395868A
CN110395868A CN201910420460.2A CN201910420460A CN110395868A CN 110395868 A CN110395868 A CN 110395868A CN 201910420460 A CN201910420460 A CN 201910420460A CN 110395868 A CN110395868 A CN 110395868A
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CN
China
Prior art keywords
iron powder
cold
lubricating oil
greasy filth
centrifuge
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.)
Pending
Application number
CN201910420460.2A
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Chinese (zh)
Inventor
王耀
吴迪青
周云根
梁芳
况群意
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Publication date
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Priority to CN201910420460.2A priority Critical patent/CN110395868A/en
Publication of CN110395868A publication Critical patent/CN110395868A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/19—Iron or steel
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Lubricants (AREA)

Abstract

The present invention relates to a kind of cold-rolled lubricating oil mud resources to handle recycling iron powder technique, its equipment used includes sequentially connected first magnetic filter, centrifuge, rinse bath, the second magnetic filter and dryer, its technique are as follows: the greasy filth that cold-strip steel cleaning section lye or emulsion are generated through the filtering of the first magnetic filter, it is delivered to centrifuge, the lesser grease of density enters wastewater treatment center after centrifugal treating, the biggish greasy filth of density enters rinse bath, using the iron powder in greasy filth after the cleaning of the second magnetic filter recovery and rinsing slot, drying machine dries to obtain iron powder.The present invention realizes greasy filth minimizing, while the iron powder of extractable high added value using a large amount of iron content greasy filth generated in Cold Rolling and cleaning process as process object.Present invention process process is simple, and cleansing medium can directly adopt cleaning section cleaning solution, and does not increase additional treatment unit for waste water.

Description

Cold-rolled lubricating oil mud resource handles recycling iron powder technique
Technical field
The present invention relates to cold rolling greasy filth recycling fields, recycle more specifically to a kind of processing of cold-rolled lubricating oil mud resource Iron powder technique.
Background technique
At present in Cold Rolling and cleaning process, a large amount of iron content greasy filth can be generated, environment poison when as solid waste Evil is big, secondary pollution can be brought when being transported through, and containing the nano grade iron powder of high added value in greasy filth, since grease mud drum covers Effect, the partial size of iron powder cluster is between 5-10 μm.The value for recycling nano grade iron powder is high.Although melting down processing tool to greasy filth Have the advantages that easy to implement, CN 107937003A, which is disclosed, mixes pressure ball for greasy filth and coking coal, coking dedusting ash, tar slag etc. The processing method of blast furnace ironmaking afterwards, but above-mentioned processing method can significantly reduce the added value of nano grade iron powder, if while melting down place The selected improper burden that can aggravate blast furnace of curing agent of reason.Therefore minimizing, resource utilization should be carried out to greasy filth, The nanometer iron powder for recycling high added value, ten thousand/t of nano grade iron powder market price about 10-30 with appropriate particle size.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of cold-rolled lubricating oil mud resource processing recycling iron powder technique.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of cold-rolled lubricating oil mud resource processing recycling Iron powder technique, the equipment used include sequentially connected first magnetic filter, centrifuge, rinse bath, the second magnetic filter and Dryer, technique are as follows:
The greasy filth that cold-strip steel cleaning section lye or emulsion are generated through the filtering of the first magnetic filter, is delivered to centrifuge, The lesser grease of density enters wastewater treatment center after centrifugal treating, and the biggish greasy filth of density enters rinse bath, utilizes second Iron powder after the cleaning of magnetic filter recovery and rinsing slot in greasy filth, drying machine dry to obtain iron powder.
In above scheme, the device for conveying greasy filth is screw pump or pneumatic diaphragm pump.
Chemical cleaning section and rinsing section are equipped in above scheme, in the rinse bath.
In above scheme, the centrifuge is horizontal type screw settling centrifuge.
In above scheme, the exit of the centrifuge is equipped with cleaning shoe.
In above scheme, the revolving speed of the centrifuge is 3000-15000r/min.
In above scheme, the cleaning agent that the chemical cleaning section uses is molten for the alkaline solution containing low foaming surfactant Alkaline components in liquid are NaOH, Na2CO3Or Na2SiO3, the low foaming surfactant is polyvinyl alcohol or n-butanol.
In above scheme, the rinsing water section reuse of section is rinsed to chemical cleaning section, is partially used for washing centrifuger.
Implement cold-rolled lubricating oil mud resource processing recycling iron powder technique of the invention, has the advantages that
1, the greasy filth that cold-strip steel cleaning section lye or emulsion are generated through magnetic filter filtering, is delivered to centrifuge, passes through The small grease of density enters wastewater treatment center after centrifugation, and the big greasy filth of density enters cleaning system after concentration, utilizes Magnetic filter Iron powder after device recovery and rinsing, drying obtain nano grade iron powder.
2, the present invention is real using a large amount of iron content greasy filth generated in Cold Rolling and cleaning process as process object Greasy filth minimizing, while the iron powder of extractable high added value are showed.Present invention process process is simple, and cleansing medium can directly adopt Cleaning section cleaning solution, and do not increase additional treatment unit for waste water.The average grain diameter for the iron powder that the present invention is prepared is about 250nm, iron powder rate of recovery > 90%, purity > 99.5%, recycle value is very high.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the equipment connection schematic diagram that cold-rolled lubricating oil mud resource of the present invention handles recycling iron powder technique；
Fig. 2 is the flow chart that cold-rolled lubricating oil mud resource of the present invention handles recycling iron powder technique；
Fig. 3 is that the embodiment of the present invention one obtains iron powder grain size distribution.
Fig. 4 is that the embodiment of the present invention two obtains iron powder grain size distribution.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail A specific embodiment of the invention.
As shown in Figure 1, cold-rolled lubricating oil mud resource of the present invention handles recycling iron powder technique, the equipment used includes successively connecting The first magnetic filter 1, centrifuge 2, rinse bath 3, the second magnetic filter 4 and the dryer 5 connect, technique are as follows:
The greasy filth that cold-strip steel cleaning section lye or emulsion are generated through the filtering of the first magnetic filter 1, is delivered to centrifuge 2, the lesser grease of density enters wastewater treatment center after centrifugal treating, and the biggish greasy filth of density enters rinse bath 3, utilizes Iron powder after the cleaning of two magnetic filters, 4 recovery and rinsing slot in greasy filth, the drying of drying machine 5 obtain iron powder.
Embodiment one:
The greasy filth that certain cold rolling mill cleaning by degreasing section is adsorbed through the first magnetic filter, is delivered to centrifuge, centrifuge speed 15000 revs/min, centrifugation time 5min, deviates from the part water and oil about 35% in greasy filth, import wastewater treatment center.From Treated that greasy filth is concentrated for the heart, achievees the purpose that minimizing is handled.
Greasy filth after concentration enters rinse bath, and the alkaline solution containing surfactant: sodium carbonate 2.5%, low bubble table is added Face activating agent polyvinyl alcohol 0.5%, lower alcohol n-butanol 0.5% clean 1min at 65 DEG C.
It is cleaned again after iron powder in second magnetic filter recovery and rinsing slot time, cleaning waste liquid imports in the public auxiliary wastewater treatment of factory The heart.Since greasy filth passes through centrifugal concentrating, treating capacity is small, and water consumption is few when cleaning, and the cleaning waste liquid of generation is few, and cleaning mud oil generates Component of effluent it is similar with the ingredient of alkali wash section waste liquid, the processing load at wastewater treatment center will not be dramatically increased.
Desalted water rinses iron powder, and poaching wastewater part imports cleaning section, is partially used for washing centrifuger.
Dryer 4 dries 30min at 60 DEG C, and dynamic light scattering detects obtained iron powder centralized particle diameter, in 200- Between 320nm, average grain diameter about 258.5nm, as shown in figure 3, the rate of recovery of iron powder is 93%, purity > 99.7%.
Embodiment two:
The greasy filth that certain cold rolling mill cleaning by degreasing section is adsorbed through the first magnetic filter, is delivered to centrifuge, centrifuge speed 3000 revs/min, centrifugation time 10min, deviates from the part water and oil about 30% in greasy filth, import wastewater treatment center.From Treated that greasy filth is concentrated for the heart, achievees the purpose that minimizing is handled.
Greasy filth after concentration enters rinse bath, and cold-strip steel cleaning section lye is added, and cleans 5min.
It is cleaned again 1 time after iron powder in magnetic filter recovery and rinsing slot, cleaning waste liquid imports the public auxiliary wastewater treatment center of factory. Since greasy filth amount is small, water consumption is few when cleaning, and the cleaning waste liquid of generation is few, and the component of effluent that generates of cleaning mud oil and alkali wash section are useless The ingredient of liquid is similar, will not dramatically increase the processing load at wastewater treatment center.
Desalted water rinses iron powder 2 times, and poaching wastewater is used for washing centrifuger.
Drying machine drying 30min at 60 DEG C, the saturated vapor that drying medium is 140 DEG C, dynamic light scattering detection are obtained The average grain diameter about 247.1nm of iron powder is obtained, as shown in figure 4, the rate of recovery of iron powder is 91%, purity > 99.5%.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much Form, all of these belong to the protection of the present invention.

Claims (8)

1. a kind of cold-rolled lubricating oil mud resource handles recycling iron powder technique, which is characterized in that its equipment used includes being sequentially connected The first magnetic filter, centrifuge, rinse bath, the second magnetic filter and dryer, technique are as follows:
The greasy filth that cold-strip steel cleaning section lye or emulsion are generated through the filtering of the first magnetic filter, is delivered to centrifuge, through from The lesser grease of density enters wastewater treatment center after heart processing, and the biggish greasy filth of density enters rinse bath, utilizes the second magnetic mistake Iron powder after the cleaning of filter recovery and rinsing slot in greasy filth, drying machine dry to obtain iron powder.
2. cold-rolled lubricating oil mud resource according to claim 1 handles recycling iron powder technique, which is characterized in that convey greasy filth Device is screw pump or pneumatic diaphragm pump.
3. cold-rolled lubricating oil mud resource according to claim 1 handles recycling iron powder technique, which is characterized in that the rinse bath It is interior to be equipped with chemical cleaning section and rinsing section.
4. cold-rolled lubricating oil mud resource according to claim 1 handles recycling iron powder technique, which is characterized in that the centrifuge For horizontal type screw settling centrifuge.
5. cold-rolled lubricating oil mud resource according to claim 1 handles recycling iron powder technique, which is characterized in that the centrifuge Exit be equipped with cleaning shoe.
6. cold-rolled lubricating oil mud resource according to claim 1 handles recycling iron powder technique, which is characterized in that the centrifuge Revolving speed be 3000-15000r/min.
7. cold-rolled lubricating oil mud resource according to claim 3 handles recycling iron powder technique, which is characterized in that the chemistry is clear The cleaning agent that section uses is washed as the alkaline solution containing low foaming surfactant, the alkaline components in solution are NaOH, Na2CO3Or Na2SiO3, the low foaming surfactant is polyvinyl alcohol or n-butanol.
8. cold-rolled lubricating oil mud resource according to claim 3 handles recycling iron powder technique, which is characterized in that rinse the drift of section The reuse of wash water part is partially used for washing centrifuger to chemical cleaning section.
CN201910420460.2A 2019-05-20 2019-05-20 Cold-rolled lubricating oil mud resource handles recycling iron powder technique Pending CN110395868A (en)

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CN201910420460.2A CN110395868A (en) 2019-05-20 2019-05-20 Cold-rolled lubricating oil mud resource handles recycling iron powder technique

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110904462A (en) * 2019-12-19 2020-03-24 钢城集团凉山瑞海实业有限公司 Oil removing agent and using method thereof
CN113087342A (en) * 2021-04-12 2021-07-09 内蒙古联晟新能源材料有限公司 Purification and recovery method for Hazerit oil product filtering oil sludge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH081170A (en) * 1994-06-20 1996-01-09 Bridgestone Corp Circulating hot water device
US20060130611A1 (en) * 2004-12-17 2006-06-22 Recovery Technology, Lp Process for de-oiling steelmaking sludges and wastewater streams
CN102581270A (en) * 2012-03-21 2012-07-18 石家庄市宏晟环保科技有限公司 Method for recycling iron powder in magnetic filters of cold rolling factory
CN107937003A (en) * 2017-11-27 2018-04-20 山西太钢不锈钢股份有限公司 A kind of processing method and processing device of greasy filth
CN108558156A (en) * 2018-05-31 2018-09-21 东莞理工学院 A kind of greasy filth recycling processing method of cold rolling mill rolling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH081170A (en) * 1994-06-20 1996-01-09 Bridgestone Corp Circulating hot water device
US20060130611A1 (en) * 2004-12-17 2006-06-22 Recovery Technology, Lp Process for de-oiling steelmaking sludges and wastewater streams
CN102581270A (en) * 2012-03-21 2012-07-18 石家庄市宏晟环保科技有限公司 Method for recycling iron powder in magnetic filters of cold rolling factory
CN107937003A (en) * 2017-11-27 2018-04-20 山西太钢不锈钢股份有限公司 A kind of processing method and processing device of greasy filth
CN108558156A (en) * 2018-05-31 2018-09-21 东莞理工学院 A kind of greasy filth recycling processing method of cold rolling mill rolling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110904462A (en) * 2019-12-19 2020-03-24 钢城集团凉山瑞海实业有限公司 Oil removing agent and using method thereof
CN113087342A (en) * 2021-04-12 2021-07-09 内蒙古联晟新能源材料有限公司 Purification and recovery method for Hazerit oil product filtering oil sludge

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Application publication date: 20191101

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