CN105906354B - A kind of lightweight high IR emissivity preparation method for coating and its application - Google Patents
A kind of lightweight high IR emissivity preparation method for coating and its application Download PDFInfo
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Abstract
A kind of lightweight high IR emissivity preparation method for coating and its application, the following steps are included: municipal sludge, copper slag, surfactant, bonding agent are mixed in proportion, the compression moulding under 50 ~ 100 MPa, is placed in reducing atmosphere and is heat-treated, and broken, grinding obtains B material；A material, silicon-containing material, clay are mixed in proportion, are granulated, sieves the particulate material for obtaining granularity as 0.5 ~ 1 mm, particulate material is then placed in heat treatment in reducing atmosphere and obtains C material；B material, clay, simple substance silica flour, metallic aluminium powder, silicon-containing material, marble wastes are mixed in proportion, are granulated, sieve the particulate material for obtaining granularity as 0.15 ~ 0.5 mm, then particulate material is placed in reducing atmosphere and is heat-treated 0.5 ~ 3 hour for 200 ~ 500 DEG C, it is warming up to 600 ~ 1000 DEG C in neutral atmosphere to be heat-treated 0.5 ~ 3 hour, obtains D material.
Description
Technical field
The invention belongs to high temperature kiln technical field of coatings.More particularly to a kind of lightweight high IR emissivity coating and its system
Preparation Method.
Background technique
Municipal sludge is a large amount of sludge of generation during municipal sewage treatment, mainly by microbial body and microbial body
The minerals and other substances being adhered to each other are constituted.Currently, the main processing ways of municipal sludge mainly include landfill, burn
Burning, compost treatment, activation processing etc..Burying method processing cost is low, but in sludge other than containing organic matter, nitrogen, phosphorus, potassium,
Various heavy can also be contained, by way of landfill, these poisonous and harmful substances and pathogenic microorganism can contaminated land and water
Resource；Burning will be equipped with corresponding incineration system, expend biggish investment and operating cost, the flue gas formed in burning process
Pollution can be generated to atmosphere and ambient enviroment；Compost treatment is that fertilizer is then made first by sludge fermentation to eliminate biohazardous
Material or soil conditioner are used for farmland, and this method specific implementation is more troublesome, and economic benefit is low, it is difficult to promote；It is activated
Be divided into physically activated and chemical activation two ways to be made active carbon, active carbon specific surface area made from physical activation method compared with
It is low, and the activating reagent content that chemical activation method need to use is higher, properties of product are single.
Using the characteristic of municipal sludge, researchers develop different types of product.A kind of " city sewage sludge reclamation burning
The method of paving brick processed " (ZL 201210538258.8) patented technology, utilizes municipal sludge, stalk coated particle, gypsum, silicon
Acid salt cement, Fluorite slag, shale, sepiolite, volcanic rock, zeolite and coconut husk charcoal etc. are raw material, through mixing, ageing, molding, are done
Paving brick is prepared for after dry, sintering；" a method of utilize municipal sludge casting sand " (ZL 201210527054.4) is special
Sharp technology, with municipal sludge, plant ash, bentonite, pulverized limestone, carboxymethyl cellulose, sodium bicarbonate, rice husk meal etc. for raw material,
It is added in reaction kettle and is stirred, it is heated, dry or dry obtained casting sand.It is " a kind of to prepare magnetism using municipal sludge
The method of active carbon " (ZL 201410245666.3) patented technology, is placed in electrolytic cell for the municipal sludge of primary sedimentation tank or secondary settling tank
In, magnetic activity is made after the washing of electrolysis, centrifuge separation, drying, charing, dilution heat of sulfuric acid and deionized water, vacuum drying
Charcoal.Existing technical method does not fully consider that the element composition of municipal sludge and mineral constitute feature (organic substance and richness
The inorganic substances of the elements such as siliceous, aluminium, potassium, calcium, oxygen), cause pollution of the exhaust gas to air in energy waste and preparation process.
Summary of the invention
The present invention is directed to overcome the deficiencies in the prior art, it is therefore an objective to provide a kind of lightweight high IR that production cost is low transmitting
Rate coating and preparation method thereof has infrared emittance high (being greater than 0.92), thermal coefficient low (small with coating prepared by this method
In 0.07w/ (mK)) and the characteristics such as long service life, 20% or more saving energy in kiln can be made.
To achieve the above object, the technical solution adopted by the present invention comprises the concrete steps that: a kind of lightweight high IR emissivity
Preparation method for coating, it is characterised in that the following steps are included:
A. by the municipal sludge of 70 ~ 90 wt%, the copper slag of 5 ~ 20 wt%, the surfactant of 1 ~ 5 wt%, 1 ~ 5
The bonding agent of wt% mixes in proportion, the compression moulding under 50 ~ 100 MPa, is placed in reducing atmosphere at 100 ~ 300 DEG C of heat
Reason is crushed after 0.5 ~ 3 hour, is ground to the B material of A material and granularity less than 0.088 mm that granularity is 0.15 ~ 0.5 mm；
B. the clay of the A material of 20 ~ 50 wt%, the silicon-containing material of 30 ~ 60 wt%, 5 ~ 20 wt% are mixed in proportion
Even, granulation, screening obtain the particulate material that granularity is 0.5 ~ 1 mm, and particulate material is then placed in 400 ~ 1000 DEG C of heat in reducing atmosphere
Processing 0.5 ~ 3 hour, obtains C material；
C. by the B material of 40 ~ 60 wt%, the clay of 1 ~ 10 wt%, the simple substance silica flour of 1 ~ 10 wt%, 1 ~ 10 wt% metal
Aluminium powder, the silicon-containing material of 5 ~ 20 wt%, 10 ~ 20 wt% marble wastes mix in proportion, be granulated, sieving and obtain granularity
For the particulate material of 0.15 ~ 0.5 mm, then particulate material is placed in reducing atmosphere and is heat-treated 0.5 ~ 3 hour for 200 ~ 500 DEG C, then at
It is warming up to 600 ~ 1000 DEG C in neutral atmosphere to be heat-treated 0.5 ~ 3 hour, obtains D material；
D. by the A material of 10 ~ 20 wt%, the B material of 10 ~ 20 wt%, the C material of 10 ~ 20 wt%, 10 ~ 20 wt% D object
Material, the silicon-containing material of 10 ~ 20 wt%, the clay of 5 ~ 15 wt%, the surfactant of 1 ~ 5 wt%, 1 ~ 10 wt% bonding agent press
Ratio is uniformly mixed, and obtains lightweight high IR emissivity coating.
Lightweight high IR emissivity coating according to the present invention, can smear or be sprayed at inner lining of kiln surface.
Preferably, the water content of the municipal sludge is 10-20 wt%.
Preferably, the granularity of the copper slag is less than 0.045 mm.
Preferably, the surfactant is Myrj 45, polyacrylamide and sorbitan oleate
One of.
Preferably, the bonding agent is one of Aluminum sol, silica solution and zirconium colloidal sol.
Preferably, the reducing atmosphere is hydrogen atmosphere or carbon monoxide atmosphere.
Preferably, the silicon-containing material is one of quartz sand, fused quartz and silicon powder, the grain of the silicon-containing material
Degree is less than 0.088 mm.
Preferably, the clay is one of palygorskite, bentonite and ball clay, the granularity of the clay is less than
0.088mm。
Preferably, the granularity of the marble wastes is greater than 0.088 mm.
Preferably, the neutral atmosphere is nitrogen atmosphere or argon atmosphere.
The invention has the advantages that: raw material production cost of the present invention is low；The present invention passes through stringent each step of control
The processes such as rapid atmosphere, granularity and heat treatment, not only improve the close contact between various feed particles, also take full advantage of city
Chemistry and the mineral composition feature of the raw materials such as city's sludge, copper slag and marble wastes are material microstructure and microcosmic hole
The formation and control of gap provide necessary condition；The strict control of process system, it is ensured that the structure and performance of coating are using
In the process continue development and optimization.
Due to using above-mentioned technical method, lightweight high IR emissivity coating prepared by the present invention has infrared emission
The characteristics such as rate high (being greater than 0.92), thermal coefficient low (less than 0.07 w/ (mK)) and long service life, can make saving energy in kiln
20% or more.
Specific embodiment
The invention will be further described With reference to embodiment, not to the limitation of its protection scope.
It is first that raw material particle size Unify legislation involved in present embodiment is as follows to avoid repeating, in embodiment not
It repeats again:
The water content of the municipal sludge is 20-30 wt%.
The granularity of the copper slag is less than 0.088 mm.
The granularity of the palygorskite, bentonite and ball clay is less than 0.088mm.
The granularity of the quartz sand, fused quartz and silicon powder is less than 0.088 mm.
The granularity of the marble wastes is greater than 0.088 mm.
Embodiment 1:
The first step, by the municipal sludge of 80 wt%, the copper slag of 10 wt%, the Myrj 45 of 5 wt%, 5
The zirconium colloidal sol of wt% mixes in proportion, the compression moulding under 50 ~ 100 MPa, is placed in hydrogen atmosphere at 100 ~ 300 DEG C of heat
Reason is crushed after 0.5 ~ 3 hour, is ground to the B material of A material and granularity less than 0.088 mm that granularity is 0.15 ~ 0.5 mm.
The ball clay of the A material of 30 wt%, the quartz sand of 50 wt%, 20 wt% are mixed in proportion, are made by second step
Grain, screening obtain the particulate material that granularity is 0.5 ~ 1 mm, and particulate material is then placed in 700 ~ 1000 DEG C of heat treatment in hydrogen atmosphere
0.5 ~ 3 hour, obtain C material.
Third step, by the B material of 60 wt%, the bentonite of 5 wt%, the simple substance silica flour of 5 wt%, 10 wt% metallic aluminium
Powder, the fused quartz of 10 wt%, 10 wt% marble wastes mix in proportion, be granulated, sieve obtain granularity be 0.15 ~
Then particulate material is placed in carbon monoxide atmosphere and is heat-treated 0.5 ~ 3 hour for 200 ~ 500 DEG C, then at nitrogen by the particulate material of 0.5 mm
It is warming up to 600 ~ 1000 DEG C in gas atmosphere to be heat-treated 0.5 ~ 3 hour, obtains D material.
4th step, by the A material of 15 wt%, the B material of 15 wt%, the C material of 20 wt%, the D material of 15 wt%, 15
The silicon powder of wt%, the ball clay of 10 wt%, the sorbitan oleate of 5 wt%, 5 wt% Aluminum sol mix in proportion,
Obtain lightweight high IR emissivity coating.Lightweight high IR emissivity coating according to the present invention, can smear or spray
In inner lining of kiln surface.
Lightweight high IR emissivity coating prepared by the present embodiment has infrared emittance high (being greater than 0.93), thermally conductive
The characteristics such as coefficient low (less than 0.06 w/ (mK)) and long service life, can make 20% or more saving energy in kiln.
Embodiment 2:
The first step, by the municipal sludge of 90 wt%, the copper slag of 5 wt%, the polyacrylamide of 3 wt%, 2 wt% silicon
Colloidal sol mixes in proportion, the compression moulding under 50 ~ 100 MPa, is placed in 100 ~ 300 DEG C of heat treatment in carbon monoxide atmosphere
It after 0.5 ~ 3 hour, is crushed, is ground to the B material of A material and granularity less than 0.088 mm that granularity is 0.15 ~ 0.5 mm.
The bentonite of the A material of 20 wt%, the fused quartz of 60 wt%, 20 wt% are mixed in proportion, are made by second step
Grain, screening obtain the particulate material that granularity is 0.5 ~ 1 mm, and then particulate material is placed in carbon monoxide atmosphere at 400 ~ 600 DEG C of heat
Reason 0.5 ~ 3 hour, obtains C material.
Third step, by the B material of 50 wt%, the palygorskite of 1wt%, the simple substance silica flour of 9 wt%, the metallic aluminium powder of 1wt%, 19
The silicon powder of wt%, 20 wt% marble wastes mix in proportion, be granulated, sieving that obtain granularity be 0.15 ~ 0.5 mm
Then particulate material is placed in hydrogen atmosphere and is heat-treated 0.5 ~ 3 hour for 200 ~ 500 DEG C, heats up in argon atmosphere by particulate material
It is heat-treated 0.5 ~ 3 hour to 600 ~ 1000 DEG C, obtains D material.
4th step, by the A material of 15wt%, the B material of 15wt%, the C material of 15 wt%, the D material of 15 wt%, 15 wt%
Quartz sand, the bentonite of 15 wt%, the Myrj 45 of 5 wt%, 10 wt% silica solution mix in proportion,
Obtain lightweight high IR emissivity coating.Lightweight high IR emissivity coating according to the present invention, can smear or spray
In inner lining of kiln surface.
Lightweight high IR emissivity coating prepared by the present embodiment has infrared emittance high (being greater than 0.92), thermally conductive
The characteristics such as coefficient low (less than 0.07 w/ (mK)) and long service life, can make 20% or more saving energy in kiln.
Embodiment 3:
The first step, by the municipal sludge of 90 wt%, the copper slag of 8 wt%, the sorbitan oleate of 1 wt%, 1 wt%
Aluminum sol mix in proportion, the compression moulding under 50 ~ 100 MPa is placed in hydrogen atmosphere 100 ~ 300 DEG C of heat treatments
It after 0.5 ~ 3 hour, is crushed, is ground to the B material of A material and granularity less than 0.088 mm that granularity is 0.15 ~ 0.5 mm.
The palygorskite of the A material of 50 wt%, the silicon powder of 45 wt%, 5 wt% are mixed in proportion, are made by second step
Grain, screening obtain the particulate material that granularity is 0.5 ~ 1 mm, and particulate material is then placed in 500 ~ 800 DEG C of heat treatment in hydrogen atmosphere
0.5 ~ 3 hour, obtain C material.
Third step, by the B material of 50 wt%, the ball clay of 5 wt%, the simple substance silica flour of 10 wt%, 5 wt% metallic aluminium
Powder, the quartz sand of 10 wt%, 20 wt% marble wastes mix in proportion, be granulated, sieve obtain granularity be 0.15 ~
Then particulate material is placed in carbon monoxide atmosphere and is heat-treated 0.5 ~ 3 hour for 200 ~ 500 DEG C, then at nitrogen by the particulate material of 0.5 mm
It is warming up to 600 ~ 1000 DEG C in gas atmosphere to be heat-treated 0.5 ~ 3 hour, obtains D material.
4th step, by the A material of 10 wt%, the B material of 10wt%, the C material of 20 wt%, the D material of 20 wt%, 20
The fused quartz of wt%, the palygorskite of 10 wt%, the polyacrylamide of 5 wt%, 5 wt% zirconium colloidal sol mix in proportion, that is, make
Obtain lightweight high IR emissivity coating.Lightweight high IR emissivity coating according to the present invention, can smear or be sprayed at kiln
Inner lining of furnace surface.
Lightweight high IR emissivity coating prepared by the present embodiment has infrared emittance high (being greater than 0.93), thermally conductive
The characteristics such as coefficient low (less than 0.06 w/ (mK)) and long service life, can make 20% or more saving energy in kiln.
Embodiment 4:
The first step, by the municipal sludge of 80 wt%, the copper slag of 10 wt%, the Myrj 45 of 5 wt%, 5
The zirconium colloidal sol of wt% mixes in proportion, the compression moulding under 50 ~ 100 MPa, is placed in hydrogen atmosphere at 100 ~ 300 DEG C of heat
Reason is crushed after 0.5 ~ 3 hour, is ground to the B material of A material and granularity less than 0.088 mm that granularity is 0.15 ~ 0.5 mm.
The palygorskite of the A material of 50 wt%, the silicon powder of 40 wt%, 10 wt% are mixed in proportion, are made by second step
Grain, screening obtain the particulate material that granularity is 0.5 ~ 1 mm, and then particulate material is placed in carbon monoxide atmosphere at 600 ~ 900 DEG C of heat
Reason 0.5 ~ 3 hour, obtains C material.
Third step, by the B material of 50 wt%, the palygorskite of 1 wt%, the simple substance silica flour of 5wt%, 4 wt% metallic aluminium powder,
The silicon powder of 20 wt%, 20 wt% marble wastes mix in proportion, be granulated, sieve obtain granularity be 0.15 ~ 0.5
Then particulate material is placed in hydrogen atmosphere and is heat-treated 0.5 ~ 3 hour for 200 ~ 500 DEG C, in argon atmosphere by the particulate material of mm
It is warming up to 600 ~ 1000 DEG C to be heat-treated 0.5 ~ 3 hour, obtains D material.
4th step, by the A material of 10 wt%, the B material of 15 wt%, the C material of 20 wt%, the D material of 20 wt%, 15
The fused quartz of wt%, the palygorskite of 5 wt%, the polyacrylamide of 1 wt%, 4 wt% zirconium colloidal sol mix in proportion, that is, make
Obtain lightweight high IR emissivity coating.Lightweight high IR emissivity coating according to the present invention, can smear or be sprayed at kiln
Inner lining of furnace surface.
Lightweight high IR emissivity coating prepared by the present embodiment has infrared emittance high (being greater than 0.92), thermally conductive
The characteristics such as coefficient low (less than 0.06 w/ (mK)) and long service life, can make 20% or more saving energy in kiln.
Claims (10)
1. a kind of lightweight high IR emissivity preparation method for coating, it is characterised in that the following steps are included:
A. by the municipal sludge of 70 ~ 90 wt%, the copper slag of 5 ~ 20 wt%, the surfactant of 1 ~ 5 wt%, 1 ~ 5 wt%
Bonding agent mixes in proportion, the compression moulding under 50 ~ 100 MPa, be placed in reducing atmosphere 100 ~ 300 DEG C of heat treatments 0.5 ~
It after 3 hours, is crushed, is ground to the B material of A material and granularity less than 0.088 mm that granularity is 0.15 ~ 0.5 mm；
B. the clay of the A material of 20 ~ 50 wt%, the silicon-containing material of 30 ~ 60 wt%, 5 ~ 20 wt% are mixed in proportion, are made
Grain, screening obtain the particulate material that granularity is 0.5 ~ 1 mm, and particulate material is then placed in 400 ~ 1000 DEG C of heat treatment in reducing atmosphere
0.5 ~ 3 hour, obtain C material；
C. by the B material of 40 ~ 60 wt%, the clay of 1 ~ 10 wt%, the simple substance silica flour of 1 ~ 10 wt%, 1 ~ 10 wt% metallic aluminium
Powder, the silicon-containing material of 5 ~ 20 wt%, 10 ~ 20 wt% marble wastes mix in proportion, be granulated, sieving and obtain granularity and be
Then particulate material is placed in reducing atmosphere and is heat-treated 0.5 ~ 3 hour for 200 ~ 500 DEG C, in by the particulate material of 0.15 ~ 0.5 mm
Property atmosphere in be warming up to 600 ~ 1000 DEG C be heat-treated 0.5 ~ 3 hour, obtain D material；
D. by the A material of 10 ~ 20 wt%, the B material of 10 ~ 20 wt%, the C material of 10 ~ 20 wt%, 10 ~ 20 wt% D material,
The silicon-containing material of 10 ~ 20 wt%, the clay of 5 ~ 15 wt%, the surfactant of 1 ~ 5 wt%, 1 ~ 10 wt% bonding agent in proportion
It is uniformly mixed, obtains lightweight high IR emissivity coating, infrared emittance is high, is greater than 0.92；
The silicon-containing material is one of quartz sand, fused quartz and silicon powder, and the granularity of the silicon-containing material is less than 0.088
mm。
2. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the city
The water content of sludge is 10-20 wt%.
3. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the copper metallurgy
The granularity of waste residue is less than 0.045 mm.
4. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the surface
Activating agent is one of Myrj 45, polyacrylamide and sorbitan oleate.
5. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the combination
Agent is one of Aluminum sol, silica solution and zirconium colloidal sol.
6. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the reduction
Atmosphere is hydrogen atmosphere or carbon monoxide atmosphere.
7. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the clay
Granularity for one of palygorskite, bentonite and ball clay, the clay is less than 0.088mm.
8. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the Dali
The granularity of stone waste material is greater than 0.088 mm.
9. a kind of lightweight high IR emissivity preparation method for coating according to claim 1, it is characterised in that the neutrality
Atmosphere is nitrogen atmosphere or argon atmosphere.
10. a kind of application of the lightweight high IR emissivity preparation method for coating as described in one of claim 1 ~ 9, feature exist
In lightweight high IR emissivity coating, for smearing or being sprayed at inner lining of kiln surface.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058684A (en) * | 2006-04-21 | 2007-10-24 | 中国科学院过程工程研究所 | High temperature common mild steel anti-oxidation coating and application thereof |
| CN101811883A (en) * | 2010-05-07 | 2010-08-25 | 江苏国窑科技有限公司 | Acid-proof heat-insulation refractory material prepared by using sludge and waste ceramics and preparation method thereof |
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2016
- 2016-04-21 CN CN201610249884.3A patent/CN105906354B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058684A (en) * | 2006-04-21 | 2007-10-24 | 中国科学院过程工程研究所 | High temperature common mild steel anti-oxidation coating and application thereof |
| CN101811883A (en) * | 2010-05-07 | 2010-08-25 | 江苏国窑科技有限公司 | Acid-proof heat-insulation refractory material prepared by using sludge and waste ceramics and preparation method thereof |
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