CN107448731B - A kind of Wen's pipe connected pipe method of inhibiting corrosion - Google Patents
A kind of Wen's pipe connected pipe method of inhibiting corrosion Download PDFInfo
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- CN107448731B CN107448731B CN201710648535.3A CN201710648535A CN107448731B CN 107448731 B CN107448731 B CN 107448731B CN 201710648535 A CN201710648535 A CN 201710648535A CN 107448731 B CN107448731 B CN 107448731B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/08—Coatings characterised by the materials used by metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Prevention Of Electric Corrosion (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Carbon And Carbon Compounds (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to a kind of Wen's pipe connected pipe method of inhibiting corrosion, and the inner wall of connecting tube is polished, is polishing to Sa2.5 grades, and roughness reaches 63 μm, weld one layer of 304 stainless steel hexsteel in buffed surface；Heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；The 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while the flip-over of the edge of the stainless steel roll bending is made into its covering connection tube end.The present invention solves the problems, such as that the connecting tube of Venturi tube causes system air leakage because of corrosion and damage.
Description
Technical field
The present invention relates to a kind of Wen's pipe connected pipe method of inhibiting corrosion.
Background technique
Since waste heat can not utilize in gold ores containing sulfur roasting technique, generally take text-fill out-electricity mode carry out cooling remove
Dirt technique, and at Venturi tube be the position that flue gas is become 80 DEG C of low temperature of < from 280 DEG C of high temperature of >, hot and cold alternation, connecting tube are frequent
There is liner fragmentation, leak out shell and corrode, part low temperature crystallization object is bonded on pipeline, and system resistance is caused to increase, and is influenced
System production.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of Wen's pipe connected pipe method of inhibiting corrosion, solutions of the present invention
The problem of certainly connecting tube of Venturi tube causes system air leakage because of corrosion and damage.
In order to solve the above-mentioned technical problem, the invention adopts the following technical scheme:
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer 304 in buffed surface
Stainless steel hexsteel；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, the ratio of component A and B component be 20~40:0.8~
2, wherein component A by following material by weight:
It is 20~40 parts of epoxy resin, 10~20 parts of activated zinc oxide, 20~30 parts of talcum powder, 20~30 parts of white carbon black, dilute
Release 5~15 parts and 1~5 part of crystalline flake graphite alkene of agent；
Wherein B component by following material by weight:
15~25 parts and 75~85 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) it prepares ore pulp: broken crystalline flake graphite mine and water being mixed according to 25~35:100 of mass ratio, ore pulp is made；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and 50~100g of butyl xanthate is added, stirs
3~5min is mixed, 8~15min of bubble is scraped；Once purging selection: into ore pulp be added 20~40g butyl xanthate, stir 1 minute, scrape bubble 3~
5 minutes；It is secondary to scan: 20~40g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 3~5 minutes；Obtain flotation squama
Piece graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 20~50:
0.1~0.5:50~80 are added in homogenizer, 1 time at least homogeneous under the conditions of 50~75 DEG C, obtain crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene；
The epoxy resin is that epoxy resin is epoxy resin E44, furane resins, No. 6101 epoxy resin and No. 634 rings
One of oxygen resin or arbitrary proportion it is two or more；
The diluent is one of alcohol, ethylene glycol diglycidylether, epoxide diluent D-678 and ethyl acetate
Or arbitrary proportion is two or more.
Component A by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of diluent and crystalline flake graphite
3 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
The epoxy resin is that epoxy resin is the group of epoxy resin E44 and No. 6101 epoxy resin according to mass ratio 2:1
Close object；The diluent is epoxide diluent D-678.
Gap < 3mm of hexsteel described in step 1) and communicating pipe.
Step d) is homogeneous 3 times, and first time homogeneous pressure is 30~40MPa, homogeneous 20min；Second of homogeneous pressure be
10~20MPa, homogeneous 20min；Third time homogeneous pressure is 4~8MPa, homogeneous 20min.
Invention has following advantageous effects:
1, it is mounted directly after carrying out castable liner with previous communicating pipe, liner is because of cold and hot friendship after a period of use
It replaces and is cracked, can fall off after long-play, enclosure material is ordinary carbon steel, corrodes intolerant to diluted acid, causes equipment damage, leaks out
Rate increases.
2, the present invention increases village in one layer of 254SMO stainless steel, and Heat-stable, interior facings is smooth, does not bond mine dust, system
Resistance is small.
3, crystalline flake graphite alkene is added in the present invention, can obviously increase the toughness of heatproof castable, will not be because of temperature at Venturi tube
Variation, cracks.
4, because graphene itself has a floatability, therefore the present invention is only with being added a small amount of butyl xanthate flotation, and roughing one
It is secondary, it scans twice, without selected, flotation essence crystalline flake graphite can be obtained.
5, the characteristics of graphene of the crystalline flake graphite alkene through homogeneous acquisition three times of the present invention has the number of plies low, good toughness.
Specific embodiment
Embodiment 1
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of diluent and crystalline flake graphite
3 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 3 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Third time homogeneous pressure is 6MPa, homogeneous 20min, obtains crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 2
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of diluent and crystalline flake graphite
3 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 4 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Third time homogeneous pressure is that time homogeneous pressure of 6MPa, homogeneous 20min, the 4th is
4MPa, homogeneous 20min obtain crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 3
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of diluent and crystalline flake graphite
3 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 2 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Obtain crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 4
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of diluent and crystalline flake graphite
3 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 2 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 6MPa, homogeneous 20min, obtains crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 5
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 5 parts of diluent and crystalline flake graphite
5 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 3 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Third time homogeneous pressure is 6MPa, homogeneous 20min, obtains crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 6
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 6 parts of diluent and crystalline flake graphite
4 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 3 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Third time homogeneous pressure is 6MPa, homogeneous 20min, obtains crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 7
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 8 parts of diluent and crystalline flake graphite
2 parts of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 3 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Third time homogeneous pressure is 6MPa, homogeneous 20min, obtains crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 8
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 9 parts of diluent and crystalline flake graphite
1 part of alkene；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 3 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Third time homogeneous pressure is 6MPa, homogeneous 20min, obtains crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
Embodiment 9
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, welds one layer in buffed surface
Gap < 3mm of 304 stainless steel hexsteels, the hexsteel and buffed surface；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, while by the side of the stainless steel roll bending
Edge flip-over makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 35:1.3, wherein A
Component by following material by weight:
25 parts of furane resins, 20 parts of activated zinc oxide, 25 parts of talcum powder, 20 parts of white carbon black, 8 parts of alcohol and crystalline flake graphite alkene
2 parts；Wherein B component by following material by weight:
Wherein B component by following material by weight:
25 parts and 75 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) prepare ore pulp: roughing mixes broken crystalline flake graphite alkene mine and water according to mass ratio 30:100, and mine is made
Slurry；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, and butyl xanthate 60g, stirring is added
4min scrapes bubble 10min；Once purging selection: 30g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is secondary to scan:
20g butyl xanthate is added into ore pulp, stirs 1 minute, scrapes bubble 4 minutes；It is selected: 10g butyl xanthate, stirring being added into ore pulp
1 minute, scrape bubble 4 minutes；Obtain flotation crystalline flake graphite and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) crystalline flake graphite alkene liquid is prepared: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to mass ratio 30:0.2:
69.8 are added in homogenizer, and homogeneous 3 times under the conditions of 60 DEG C, first time homogeneous pressure is 35MPa, homogeneous 20min；Second
Homogeneous pressure is 15MPa, homogeneous 20min；Third time homogeneous pressure is 6MPa, homogeneous 20min, obtains crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene.
The epoxy resin of embodiment 1 to 8 is that epoxy resin is epoxy resin E44 and No. 6101 epoxy resin according to quality
Composition than 2:1；The diluent is epoxide diluent D-678.
The present invention is further illustrated below with reference to specific example.
Experiment one:
1 materials and methods:
1.1 test sites: the global Qi Ye Co., Ltd in Yantai laboratory.
1.2 experiment detections: carrying out flaw detection is carried out.
1.3 materials to be tested: heatproof castable, the embodiment 3 of heatproof castable, the preparation of embodiment 2 prepared by embodiment 1 are made
It is prepared by heatproof castable, embodiment 6 prepared by heatproof castable, the embodiment 5 of standby heatproof castable, the preparation of embodiment 4
Heatproof castable prepared by heatproof castable and embodiment 8 prepared by heatproof castable, embodiment 7.
1.4 experimental designs: by the 254SMO stainless steel roll bending one side of 2mm thickness, Sa2.5 grades are polishing to, roughness reaches
63
μm, one layer of 304 stainless steel hexsteel, gap < 3mm of the hexsteel and buffed surface are welded in buffed surface；Respectively
Heatproof castable, embodiment 4 prepared by heatproof castable, embodiment 3 prepared by 1 heatproof castable of embodiment, embodiment 2 are made
It is prepared by heatproof castable, embodiment 7 prepared by heatproof castable, the embodiment 6 of standby heatproof castable, the preparation of embodiment 5
Heatproof castable prepared by heatproof castable and embodiment 8 is uniformly applied on hexsteel, with a thickness of 3cm, stand for 24 hours, as
Liner；The 254SMO stainless steel roll bending turnup of 2mm thickness is wrapped up into liner, distinguishes seamless welding into the strip of 6cm × 12cm.It will
Strip is put into 300 DEG C of drying air boxes 12 hours, takes out room temperature cooling 8 hours, and 45 days repeatedly, using ultrasonic examination,
Surveying liner, whether there are cracks or defect.
This experiment is consistent with other operations in addition to processing difference except testing.
2 results and analysis are shown in Table 1
Carrying out flaw detection result after table 1 is tested 45 days
In table 1 by embodiment 1, embodiment 2, embodiment 3 and embodiment 4 compare it can be seen from it is even to crystalline flake graphite alkene
Matter 3 times and 4 times, reachable liner flawless, no peeling；By embodiment 1, embodiment 5, embodiment 6, embodiment 7 and implement
Example 8 compares as can be seen that crystalline flake graphite alkene additional amount is when reaching 3% can accomplish liner flawless, no peeling, overall cost and
Effect considers that 1 technique of embodiment and graphene additive amount are best.
Embodiment 1 is applied to the Venturi tube in Yantai Jin Ao gold smelting Co., Ltd gold ores containing sulfur roasting technique
Place, has used 2 years, has not occurred liner Fragmentation Phenomena；Liner occurred as soon as broken corrosion phenomenon using 1 year in the past, needed to change.
Claims (4)
1. a kind of Wen's pipe connected pipe method of inhibiting corrosion, it is characterised in that follow the steps below:
1) inner wall of connecting tube is polished, is polishing to Sa2.5 grades, roughness reaches 63 μm, stainless in one layer 304 of buffed surface welding
Steel hexsteel；
2) heatproof castable is uniformly applied on hexsteel, with a thickness of 3cm, is stood for 24 hours, as liner；
3) the 254SMO stainless steel roll bending of 2mm thickness is attached to inner lining surface, at the same by the edge of the stainless steel roll bending to
Outer overturning makes its covering connection tube end；
The heatproof castable is made of component A and B component, and the ratio of component A and B component is 20~40:0.8~2,
Middle component A by following material by weight:
20~40 parts of epoxy resin, 10~20 parts of activated zinc oxide, 20~30 parts of talcum powder, 20~30 parts of white carbon black, diluent 5
~15 parts and 1~5 part of crystalline flake graphite alkene；
Wherein B component by following material by weight:
15~25 parts and 75~85 parts of trimethylhexamethylenediamine of ethylenediamine；
Wherein crystalline flake graphite alkene follows the steps below:
A) it prepares ore pulp: broken crystalline flake graphite mine and water being mixed according to 25~35:100 of mass ratio, ore pulp is made；
B) prepare flotation crystalline flake graphite: roughing: ore pulp is added in flotation device, addition 50~100g of butyl xanthate, and stirring 3~
5min scrapes 8~15min of bubble；Once purging selection: 20~40g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes 3~5 points of bubble
Clock；It is secondary to scan: 20~40g butyl xanthate being added into ore pulp, stirs 1 minute, scrapes bubble 3~5 minutes；Obtain flotation scale stone
Ink and tailing；
C) prepare flotation essence crystalline flake graphite: flotation crystalline flake graphite is filtered, and flotation essence crystalline flake graphite and filtrate are obtained；
D) prepare crystalline flake graphite alkene liquid: by flotation essence crystalline flake graphite, 5040 dispersing agents and water according to 20~50:0.1 of mass ratio~
0.5:50~80 are added in homogenizer, 1 time at least homogeneous under the conditions of 50~75 DEG C, obtain crystalline flake graphite alkene liquid；
E) it prepares crystalline flake graphite alkene: after crystalline flake graphite alkene liquid is spray-dried, obtaining crystalline flake graphite alkene；
The epoxy resin is one of epoxy resin E44, furane resins, No. 6101 epoxy resin and No. 634 epoxy resin
Or arbitrary proportion is two or more；
The diluent is one of alcohol, ethylene glycol diglycidylether, epoxide diluent D-678 and ethyl acetate or appoints
Meaning ratio it is two or more.
2. Wen's pipe connected pipe method of inhibiting corrosion as described in claim 1, it is characterised in that: component A is pressed by following material
It is formed according to parts by weight:
30 parts of epoxy resin, 15 parts of activated zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of diluent and crystalline flake graphite alkene 3
Part；
Wherein B component by following material by weight:
20 parts and 80 parts of trimethylhexamethylenediamine of ethylenediamine；
The epoxy resin is that epoxy resin is the composition of epoxy resin E44 and No. 6101 epoxy resin according to mass ratio 2:1；
The diluent is epoxide diluent D-678.
3. Wen's pipe connected pipe method of inhibiting corrosion as described in claim 1, it is characterised in that: hexsteel described in step 1)
With gap < 3mm of connecting tube.
4. Wen's pipe connected pipe method of inhibiting corrosion as described in claim 1, it is characterised in that: step d) is homogeneous 3 times, the
Homogeneous pressure is 30~40MPa, homogeneous 20min；Second of homogeneous pressure is 10~20MPa, homogeneous 20min；For the third time
Homogeneous pressure is 4~8MPa, homogeneous 20min.
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