CN109351703A - A kind of waste metal cleaning method - Google Patents
A kind of waste metal cleaning method Download PDFInfo
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- CN109351703A CN109351703A CN201811246299.3A CN201811246299A CN109351703A CN 109351703 A CN109351703 A CN 109351703A CN 201811246299 A CN201811246299 A CN 201811246299A CN 109351703 A CN109351703 A CN 109351703A
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- metalwork
- cleaning
- service sink
- waste metal
- cleaning method
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- 238000004140 cleaning Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 title claims abstract description 21
- 239000002699 waste material Substances 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 18
- ZHCGVAXFRLLEFW-UHFFFAOYSA-N 2-methyl-3-(prop-2-enoylamino)propane-1-sulfonic acid Chemical compound OS(=O)(=O)CC(C)CNC(=O)C=C ZHCGVAXFRLLEFW-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000012459 cleaning agent Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000002352 surface water Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 8
- 239000002562 thickening agent Substances 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 238000003475 lamination Methods 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 241001062472 Stokellia anisodon Species 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 22
- 239000003599 detergent Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000007605 air drying Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 150000001924 cycloalkanes Chemical class 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- -1 alkane Hydrocarbon Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
-
- 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
-
- 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
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention relates to metal smelt technical field, in particular to a kind of waste metal cleaning method has preferable cleaning ability to the sump oil on metalwork surface, meanwhile, it is capable to handle the waste water after cleaning, reduces wastewater discharge, reduce environmental pollution.Main technological steps include: S1: being cleared up first the solid sundries on metalwork surface；S2: the metalwork after preliminary cleaning is dipped in service sink, is flooded not, cleaning agent is added into service sink；S3: 2- acrylamido-methyl propane sulfonic acid is added into service sink；S4: heating liquid in service sink, meanwhile, metalwork surface is cleared up using the cleaning brush in service sink；S5: the metalwork after cleaning is taken out, and being placed in the room of draining, to drain surface water stain；S6: the colloidal solid sundries that removal metalwork surface is adhered；S7: the metalwork after S6 step process is cleaned using clear water, the metalwork cleaned up can be obtained.
Description
Technical field
The invention belongs to metal smelt technical field, in particular to a kind of waste metal cleaning method.
Background technique
Instantly alloy production enterprise is when producing different types of alloy, it will usually select the waste metal part such as oil of recycling
Cylinder etc. is produced as raw material.But the metalwork generally recycled due to itself use environment or abandon when by
Other impurity pollutions cause its surface contaminants more, and especially greasy dirt is more.
The metalwork of recycling when in use first cleans in metallurgical production enterprise, usually the cleaning of multipass water and cleaning
Agent cleaning, still, this cleaning way and existing cleaning agent are difficult more thoroughly to clean up metalwork, to make gold
Belong to part surface and still remain a large amount of oils hydrocarbons, during subsequent smelting, oily substance carbonization is penetrated into production
In alloy, product quality is influenced；Meanwhile a large amount of waste water are generated during cleaning, environmental pollution is more serious.
Summary of the invention
The object of the present invention is to provide a kind of waste metal cleaning methods, have to the sump oil on metalwork surface preferable
Cleaning ability reduces wastewater discharge meanwhile, it is capable to handle the waste water after cleaning, reduces environmental pollution.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of waste metal cleaning method, comprising the following steps:
S1: the solid sundries on metalwork surface are cleared up first；
S2: the metalwork after preliminary cleaning is dipped in service sink, is flooded not, cleaning agent is added into service sink；
S3: 2- acrylamido-methyl propane sulfonic acid is added into service sink；
S4: heating liquid in service sink, meanwhile, metalwork surface is carried out using the cleaning brush in service sink clear
Reason；
S5: the metalwork after cleaning is taken out, and being placed in the room of draining, to drain surface water stain；
S6: the colloidal solid sundries that removal metalwork surface is adhered；
S7: the metalwork after S6 step process is cleaned using clear water, the metalwork cleaned up can be obtained.
Further, heating temperature is 90-150 DEG C in step S4.
Further, in step S5, room temperature control is drained at 5-20 DEG C.
Further, in step s 5, after metalwork being taken out out of service sink, thickener is added into service sink, stirs
After mixing uniformly, stand.
Further, after standing, there is lamination in the liquid in service sink, and upper layer sump oil layer is removed, lower layer's mixing
It is re-used for cleaning after liquid layer recycling.
Further, the thickener is polyacrylamide.
Further, the time of repose is 1-2h.
The beneficial effects of the present invention are:
1. the present invention is modified cleaning agent by the way that 2- acrylamido-methyl propane sulfonic acid is added into service sink, make
The cleaning effect of metalwork surface and oil contaminant is preferable.Reason is: the greasy dirt on metalwork surface is mostly lubricating oil, and main component is more
For mineral base oil, chemical composition is generally alkane (straight chain, branch, highly branched chain), cycloalkane (monocycle, bicyclic, polycyclic), virtue
The hydrocarbon compounds such as hydrocarbon (mononuclear aromatics, polycyclic aromatic hydrocarbon), 2- acrylamido-methyl propane sulfonic acid can be to the poles of hydrocarbon compound
Property group interfered, reduce hydrocarbon compound in the adhesive force on metalwork surface, make sump oil easily from metalwork sur-face peeling.
2. on the other hand, containing highly polar groups such as acyl group, sulfonic groups in 2- acrylamido-methyl propane sulfonic acid, in dirt
After oil is detached from from metalwork surface, 2- acrylamido-methyl propane sulfonic acid replaces sump oil to be attached to metalwork surface, avoids sump oil
Symbol is glued again on metalwork surface.Again due to the hydrophobic performance of acyl group, class thixotropy is made it have, in the environment of low temperature drying
(be such as placed on low temperature drains interior), the 2- acrylamido-methyl propane sulfonic acid for being attached to metalwork surface are gradually done
Dry solidification, process of the process similar to ink setting；After the drying, the solid sundries on metalwork surface are removed by external force,
Cleaner metalwork can be obtained.Compared with the other application documents applied on the same day, present embodiments condition
Under cleaning effect it is more preferable on the whole, consider that reason may is that the change of 2- acrylamido-methyl propane sulfonic acid, 2- acryloyl
Amido-methyl propane sulfonic acid is in acidity, and general cleaning agent is alkalinity, this also overcomes tradition and passes through alkalinity cleaning to sump oil
Technology prejudice.
3. sump oil is swum in the cleaning solution containing 2- acrylamido-methyl propane sulfonic acid, Xiang Qi after metalwork cleaning
Middle addition thickener polyacrylamide, due to polyacrylamide and 2- acrylamido-methyl propane sulfonic acid similar compatibility, with alkane
Hydrocarbon, cycloalkane sump oil are immiscible, thus, the cleaning solution containing 2- acrylamido-methyl propane sulfonic acid gradually thickens, final clear
There is lamination in liquid in wash pool, also due to the class thixotropy of 2- acrylamido-methyl propane sulfonic acid itself, after making thickening
Layered effect becomes apparent from.After the removal of sump oil layer, layer of cleaning solution can be continued to use.Although due to thickener etc., cleaning
Effect is substantially reduced, but can be still recycled 2-3 times under heating conditions.
Specific embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is clearly and completely described.Obviously, it is retouched
The embodiment stated is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, originally
Field those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
Embodiment 1
A kind of waste metal cleaning method, specific step is as follows.
S1: clear up first the solid sundries on metalwork surface: the sundries for the bulk that metalwork surface is adhered is broken
Bits are cleaned out, and the greasy dirt that can not be removed only is retained.
S2: the metalwork after preliminary cleaning is dipped in service sink, is flooded not, commercially available cleaning is added into service sink
Agent (the present embodiment is used to sell stainless steel detergent for Europe MOOTAA brand), the volume ratio of the detergent and cleaning pool inner water
For 1:80.
S3: 2- acrylamido-methyl propane sulfonic acid powder being added into service sink, and the weight ratio with cleaning pool inner water is
1:150 is uniformly mixed.
S4: heating liquid in service sink, temperature at 120 DEG C or so, meanwhile, utilize the cleaning brush pair in service sink
Metalwork surface is cleared up, and comes into full contact with cleaning agent with metalwork surface.
S5: the metalwork after cleaning is taken out, and being placed in the room of draining, to drain surface water stain, drains room temperature on 5 DEG C of left sides
It is right.As metalwork temperature gradually decreases, there is colloidal solid sundries in metalwork surface.
S6: it is removed by the colloidal solid sundries that metalwork surface is adhered by sharp weapon or other tools.
S7: the metalwork after S6 step process being cleaned using clear water, natural air drying later, be can be obtained and is cleaned up
Metalwork.
Embodiment 2
A kind of waste metal cleaning method, specific step is as follows.
S1: clear up first the solid sundries on metalwork surface: the sundries for the bulk that metalwork surface is adhered is broken
Bits are cleaned out, and the greasy dirt that can not be removed only is retained.
S2: the metalwork after preliminary cleaning is dipped in service sink, is flooded not, commercially available cleaning is added into service sink
Agent (the present embodiment is used to sell stainless steel detergent for Europe MOOTAA brand), the volume ratio of the detergent and cleaning pool inner water
For 1:90.
S3: 2- acrylamido-methyl propane sulfonic acid powder being added into service sink, and the weight ratio with cleaning pool inner water is
1:130 is uniformly mixed.
S4: heating liquid in service sink, temperature at 90 DEG C or so, meanwhile, utilize the cleaning brush pair in service sink
Metalwork surface is cleared up, and comes into full contact with cleaning agent with metalwork surface.
S5: the metalwork after cleaning is taken out, and being placed in the room of draining, to drain surface water stain, drains room temperature on 10 DEG C of left sides
It is right.As metalwork temperature gradually decreases, there is colloidal solid sundries in metalwork surface.After metalwork taking-up, to service sink
Interior addition thickener polyacrylamide, stirs evenly, and stands 1.5 hours.Lamination gradually occurs for the liquid in service sink,
Sump oil swims in upper layer, and lower layer is mixing liquid layer；Upper layer sump oil layer is removed, lower layer, which stays in service sink, continues cleaning use,
That is recycling and reusing.Experiment discovery, mixing liquid layer cleaning effect after the recovery are decreased obviously, and after being recycled 2-3 times, are needed
The cleaning solution renewed.
S6: it is removed by the colloidal solid sundries that metalwork surface is adhered by sharp weapon or other tools.
S7: the metalwork after S6 step process being cleaned using clear water, natural air drying later, be can be obtained and is cleaned up
Metalwork.
Embodiment 3
A kind of waste metal cleaning method, specific step is as follows.
S1: clear up first the solid sundries on metalwork surface: the sundries for the bulk that metalwork surface is adhered is broken
Bits are cleaned out, and the greasy dirt that can not be removed only is retained.
S2: the metalwork after preliminary cleaning is dipped in service sink, is flooded not, commercially available cleaning is added into service sink
Agent (the present embodiment is used to sell stainless steel detergent for Europe MOOTAA brand), the volume ratio of the detergent and cleaning pool inner water
For 1:90.
S3: 2- acrylamido-methyl propane sulfonic acid powder being added into service sink, and the weight ratio with cleaning pool inner water is
1:100 is uniformly mixed.
S4: heating liquid in service sink, temperature at 150 DEG C or so, meanwhile, utilize the cleaning brush pair in service sink
Metalwork surface is cleared up, and comes into full contact with cleaning agent with metalwork surface.
S5: the metalwork after cleaning is taken out, and being placed in the room of draining, to drain surface water stain, drains room temperature on 20 DEG C of left sides
It is right.As metalwork temperature gradually decreases, there is colloidal solid sundries in metalwork surface.After metalwork taking-up, to service sink
Interior addition thickener polyacrylamide, stirs evenly, and stands 2 hours.Lamination gradually occurs for the liquid in service sink, dirty
For oil float on upper layer, lower layer is mixing liquid layer；Upper layer sump oil layer is removed, lower layer, which stays in service sink, continues cleaning use, i.e.,
Recycling and reusing.Experiment discovery, mixing liquid layer cleaning effect after the recovery are decreased obviously, and after being recycled 2-3 times, need to change
New cleaning solution.
S6: it is removed by the colloidal solid sundries that metalwork surface is adhered by sharp weapon or other tools.
S7: the metalwork after S6 step process being cleaned using clear water, natural air drying later, be can be obtained and is cleaned up
Metalwork.
Comparative example
A kind of waste metal cleaning method, specific step is as follows.
S1: clear up first the solid sundries on metalwork surface: the sundries for the bulk that metalwork surface is adhered is broken
Bits are cleaned out, and the greasy dirt that can not be removed only is retained.
S2: the metalwork after preliminary cleaning is dipped in service sink, is flooded not, commercially available cleaning is added into service sink
Agent (the present embodiment is used to sell stainless steel detergent for Europe MOOTAA brand), the volume ratio of the detergent and cleaning pool inner water
For 1:80.
S3: heating liquid in service sink, temperature at 120 DEG C or so, meanwhile, utilize the cleaning brush pair in service sink
Metalwork surface is cleared up, and comes into full contact with cleaning agent with metalwork surface.
S4: the metalwork after cleaning is taken out, and being placed in the room of draining, to drain surface water stain, drains room temperature on 5 DEG C of left sides
It is right.The metalwork cleaned up can be obtained.
Cleaning ability detects (gravimetric method)
It is hard that LY 12 (BCZ) is prepared according to professional standard JB/T 4323.1-1999 " water base metal cleaning agent test method "
N46HL hydraulic oil is soaked in aluminum metal test piece.When pendulum is washed, by metal testing plate as above-described embodiment 1-3 and the service sink of comparative example
It is interior according to the pendulum mode of washing carry out pendulum wash, for the test piece tested according to the experiment condition of embodiment 1-3, wash end in pendulum
Afterwards, surface glue solids is removed by external force, and again after cleaning, drying, using this weight as whole weight.Calculate cleaning energy
Power h, h=(P2-P3)/(P2-P1) * 100%；Wherein P1 is the net weight of test piece；P2 be by oil immersion it is wet after, test piece and oil gross weight
Amount；P3 is the total weight of test piece and oil residues after the completion of processing.
| Number | P1/g | P2/g | P3/g | h |
| Embodiment 1 | 2.9 | 4.3 | 2.93 | 97.9% |
| Embodiment 2 | 3.1 | 4.2 | 3.12 | 98.2% |
| Embodiment 3 | 3.0 | 4.3 | 3.05 | 96.2% |
| Comparative example | 3.0 | 4.3 | 3.35 | 73.1% |
By above-mentioned experimental result it is found that compared with comparative example, each experiment condition of the embodiment of the present application 1 into embodiment 3
Lower cleaning agent is preferable to sump oil cleaning ability, and cleaning rate is up to 98.2%.Reason may is that in the application to be added in cleaning solution
Enter 2- acrylamido-methyl propane sulfonic acid to be handled, so that more thoroughly to sump oil cleaning.
Claims (7)
1. a kind of waste metal cleaning method, which comprises the following steps:
S1: the solid sundries on metalwork surface are cleared up first；
S2: the metalwork after preliminary cleaning is dipped in service sink, is flooded not, cleaning agent is added into service sink；
S3: 2- acrylamido-methyl propane sulfonic acid is added into service sink；
S4: heating liquid in service sink, meanwhile, metalwork surface is cleared up using the cleaning brush in service sink；
S5: the metalwork after cleaning is taken out, and being placed in the room of draining, to drain surface water stain；
S6: the colloidal solid sundries that removal metalwork surface is adhered；
S7: the metalwork after S6 step process is cleaned using clear water, the metalwork cleaned up can be obtained.
2. a kind of waste metal cleaning method according to claim 1, it is characterised in that: heating temperature is in step S4
90-150℃。
3. a kind of waste metal cleaning method according to claim 1, it is characterised in that: in step S5, drain Indoor Temperature
Degree control is at 5-20 DEG C.
4. a kind of waste metal cleaning method according to claim 1, it is characterised in that: in step s 5, by metalwork
After taking out out of service sink, thickener is added into service sink, after mixing evenly, stands.
5. a kind of waste metal cleaning method according to claim 4, it is characterised in that: the liquid after standing, in service sink
There is lamination in body, and upper layer sump oil layer is removed, and is re-used for cleaning after lower layer's mixing liquid layer recycling.
6. a kind of waste metal cleaning method according to claim 4, it is characterised in that: the thickener is polyacrylamide
Amine.
7. a kind of waste metal cleaning method according to claim 4, it is characterised in that: the time of repose is 1-2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246299.3A CN109351703A (en) | 2018-10-25 | 2018-10-25 | A kind of waste metal cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246299.3A CN109351703A (en) | 2018-10-25 | 2018-10-25 | A kind of waste metal cleaning method |
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| CN109351703A true CN109351703A (en) | 2019-02-19 |
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ID=65346440
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| CN201811246299.3A Withdrawn CN109351703A (en) | 2018-10-25 | 2018-10-25 | A kind of waste metal cleaning method |
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-
2018
- 2018-10-25 CN CN201811246299.3A patent/CN109351703A/en not_active Withdrawn
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|---|---|---|---|---|
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Application publication date: 20190219 |