CN108863278A - Waste and old inorfil regenerates the method for preparing low heat conducting fiber product - Google Patents
Waste and old inorfil regenerates the method for preparing low heat conducting fiber product Download PDFInfo
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- CN108863278A CN108863278A CN201810725716.6A CN201810725716A CN108863278A CN 108863278 A CN108863278 A CN 108863278A CN 201810725716 A CN201810725716 A CN 201810725716A CN 108863278 A CN108863278 A CN 108863278A
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- heat conducting
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/005—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing gelatineous or gel forming binders, e.g. gelatineous Al(OH)3, sol-gel binders
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to waste and scrap utilization technology fields, provide a kind of method that waste and old inorfil regeneration prepares low heat conducting fiber product, are successively tentatively sieved, are pre-processed to waste and old aluminum silicate fibre product, ingredient slurrying, molding drying, finished product；Pre-treatment step is using immersion removal of impurities, mechanical stirring, gravitational settling；Additive is added in ingredient pulping stage, and additive includes bonding agent, modifying agent and binder；Bonding agent is preferably high-temperature nano bonding agent.The present invention solves the discarded aluminum silicate fibre product of industrial enterprise and largely abandons, buries brought huge environmental pollution and problem of resource waste；Manufactured goods nanometer aluminium silicate fiberboard or thermal coefficient≤0.065W/m.k at 600 DEG C of shell hot-face temperature, better than similar product in GB/T 16400-2015；Method is simple and easy, can produce huge economic benefit and social benefit, has broad application prospects, is suitable for popularization and application.
Description
Technical field
The present invention relates to waste and scrap utilization technology field, in particular to waste and old inorfil regeneration prepares low thermally conductive
The method of fibre.
Background technique
Alumina silicate fibre is called ceramic fibre, is a kind of New type of light refractory material, using hard paste clinker as raw material, warp
Resistance or electric arc furnaces melting, blowing fiber-forming process produce.The material is light with bulk density, high temperature resistant, thermal stability are good, and heat passes
The advantages that conductance is low, thermal capacitance is small, resistance to mechanical is vibrated, expanded by heating is small, heat-proof quality is good, through special processing, can be made into silicic acid
The products such as aluminum fiberboard, alumina silicate fiber felt, alumina silicate fibre rope, alumina silicate fibre blanket.It is low with thermostable heat-conductive coefficient, hold
The features such as heavy and light, long service life, tensile strength is big, and elasticity is good, nontoxic is the new material for replacing asbestos, is widely used in smelting
It is used as high temperature furnace filling, kiln insulating layer and heat netting pipeline heat preservation etc. on the high-temperature services such as gold, chemical industry, electric power, mechanical industry smelting furnace
Engineering.
While widely applying ceramic fibre, a large amount of waste product is also produced.The actual conditions current from China
It sees, electric power, chemical industry, petroleum, this metallurgical four major trades are the lavish consumers that uses of thermal insulation material, meanwhile and waste and old thermal insulating material
Material abandons rich and influential family, and annual largely discarded thermal insulation material is slatterned in vain.Such as it is able to achieve heat-insulating heat-preserving material waste
Variation is efficient resource and to be recycled, it is controlled and used from source, this is actually that a kind of broadly energy conservation subtracts
Row.External many countries, especially developed country, pay much attention to the regeneration of refractory material solid waste, have increased to ring
Guarantor, the utilization of resources, the economic benefit for improving enterprise and the height of social benefit go to recognize, and have formulated relevant decree regulation,
Specialized research institutions is set up, sets up specialized company, utilization of resources rate is high, and it is waste and old that the steel mill in the U.S. generates about 1,000,000 t every year
Refractory material, former almost all are landfilled, only a small amount of recycling.If any steel mill have reached 80% or more.With the U.S. in 1998
Ministry of Energy, industrial technology portion and the steel producer extend the service life of refractory material and recycle waste refractory materials plan
Formulation, the utilization rate of used refractory is obviously improved, especially refractory brick, castable refractory etc..
Currently general industrial solid wastes are substantially equivalent in the method that China handles aluminum silicate fibre product.Greatly
Some Enterprises are in process of production, basic to the processing of waste and old aluminium silicate products under the pressure of cost pressures such as time, manpower and funds
Using air storage, fill out ditch naturally and fill out hole by the way of, this processing mode can all cause soil, underground water, atmosphere etc. existing
Real influence and potential danger, such as has resulted in the serious pollution at some regional water sources.The discarded heat preservation of general industry enterprise
Material is used as useless solid waste, or is dropped or is landfilled, and more serious threat is not only constituted to ecological environment, but also
Result in the waste of a large amount of precious resources.
The waste and old aluminum silicate fibre product of enormous amount causes the significant wastage of available resources and the serious pollution of environment,
Also very big harm can be caused to the health of the mankind.Therefore, the regeneration work of waste and old aluminum silicate fibre product, product should be paid attention to
The mass production of the waste and old aluminum silicate fibre product of limit system makes great efforts to push opening for waste and old aluminum silicate fibre product recovery and utilization technology
Hair research.Meanwhile to realize economic heath, quick and sustainable development, it is imperative actively to develop a circular economy.
Other waste and old inorfils, such as glass fibre, rock wool, mineral wool, also face ring same as ceramic fibre
Border pollution and problem of resource waste.
Summary of the invention
The it is proposed of the technical problem of being solved of the invention：
The inorfil of industrial enterprise（Alumina silicate fibre, glass fibre, rock wool and mineral wool）Product in use, because hair
It gives birth to and the externalities such as impregnates, permeates, spreading, washing away, will lead to its rotten and erosion, and in heap in waste and old inorfil product
It puts, fill and can be mixed with other solid waste materials, sundries, spot and itself included slag ball, lime-ash etc..It is with waste and old alumina silicate fibre
Example is mixed currently, being usually that it degrades to use as auxiliary material to the recycling research of solid waste with the ratio of very little
Enter into other products, and is to reduce product quality as cost.Best solution is the waste and old aluminium silicate fiber of research
The recovery and reusing and recycling of product not only saves the correlative charges such as freight charges, handling, then is produced into ceramic nano fibre by new technology
The thermal insulation materials such as plate or shell are tieed up, performance indicator is more outstanding than traditional aluminum silicate fibre product, can be directly in heat preservation insulation field
It uses.Added value is very high, has both realized solid waste utilization, has increased profit, also achieve circular economy clean manufacturing, saved soil
Ground, moreover it is possible to obtain that the various expenses of taxation are preferential and social benefit.
Conventional insulation is, thermal coefficient thermal coefficient greater than air heat-insulated by isolation air.We are in the people
Vacuum pumping technology is used to form vacuum structure in life, to form heat insulating construction to reach ideal heat insulation effect.Industry
Warmed body bulky in production, complex-shaped, range of temperature is bigger（-162℃~1700℃）, industry in then can not
Vacuum structure is formed by vacuumizing；Ceramic nanofibers technology is that the multiple fibers such as ceramic fibre are skeleton, using colloid method
Ceramic material is prepared into nanometer materials with supercritical strengthening technique, partial size is less than 40nm（Air molecule group's free travel
About 70nm）Ceramic powder account for 98% or more, vacuum structure is formed, to realize vacuum insulation knot in Industrial Engineering field
Structure makes warmed body surface radiating amount reduce 50% or more（Compared with Conventional insulation）.Ceramic nanofibers technology is received including ceramics
Rice high temperature adhesives technology and ceramic nano high-temperature composite material preparation process, the Nano-Ceramic Composites heat after dry solidification
At 600 DEG C of face temperature, thermal coefficient is less than 0.060W/m.k, and can be used for a long time at high temperature.
Intend being directed to waste and old aluminum silicate fibre product combination ceramic nanofibers technology in the present invention, research sorts, classifies
And preparation process, the products such as preparation ceramic nanofibers shell enhance product performance, increase value of the product, realize waste and old silicic acid
The recovery and reusing and recycling of aluminum fiber product.It is pre- to pay attention to sorting, cleaning, removal permeable formation, broken processing, screening removal of impurities etc.
Treatment process.Meanwhile the technique also can expanded application in waste and old glass fibre, rock wool and mineral wool.
Solid waste resource recovery is the most effective and the most fundamental approach of environmental protection, can both solve solid waste discharge and ask
Topic, protects the environment from pollution, and can form new industrial chain, rationally utilizes resource, real Ecological Industrial is made to become a reality,
Generate preferable economic benefit and social benefit.Research waste resource recycling is the leading side of various countries' junk comprehensive treatment
To recycling theory is also that waste pollution is promoted to administer the motive force organically combined with recycling.It can both guarantee to realize rubbish
Rubbish Abfallwirtschaft it is innoxious, the circular regeneration of junk can also be promoted.
The object of the invention is to overcome the deficiencies of the prior art and provide a kind of waste and old inorfil regeneration to prepare low lead
The method of thermal fiber product, this method successively tentatively sieves waste and old inorfil product, pre-processed, ingredient slurrying, at
Type drying, finished product；The inorfil includes alumina silicate fibre, glass fibre, rock wool and mineral wool etc..
Further, the pre-treatment step is to impregnate one or more of removal of impurities, mechanical stirring, gravitational settling.
Further, the ingredient pulping stage is specially：Passing through pretreated waste and old inorfil product raw material
In, additive is added, smashes, stirs evenly through beater in stock tank, obtain slurry；The additive includes bonding agent, changes
Property agent and binder.
Further, the molding baking step is：The slurry that pulping stage is obtained is put into forming tank, passes through vacuum
The method of suction strainer forms, and drying system is put into after demoulding and carries out drying and processing.
Further, heating, drying is used in drying and processing.
Further, the bonding agent is high-temperature nano bonding agent, and the high-temperature nano bonding agent includes hydrophobic nano
Silica, water and Multicomponent Surfactants；The Multicomponent Surfactants include that organic surface with hydrophilic group is living
Property agent and inorganic dispersant；The organic surface active agent be with sulfonic group, sulfate group, amide groups, hydroxyl, ammonium and
The compound of two or more groups in oxyethylene group；The inorganic dispersant is sodium tripolyphosphate, calgon, sulfomethylated lignin
One or more of sour calcium, sodium lignin sulfonate；The mass ratio of hydrophobic nano silica and water is 20:80, multicomponent
Surfactant is the 13-15wt% of aqueous silica solution, and the mass ratio of organic surface active agent and inorganic dispersant is 10：
（3-5）.
Further, the modifying agent is converted starch, and the binder is silica solution or Aluminum sol or waterglass.
Further, the mass ratio of the bonding agent, modifying agent and binder is 15-30：2-5：8-15.
Further, the finished product includes low heat conducting nano fiber shell, low heat conducting nano fiberboard, low heat conducting nano fibre
Tie up felt, low heat conducting nano fiber coating block and low heat conducting nano fiber coating.When using waste and old alumina silicate fibre for raw material,
The finished product is ceramic nano silicic acid aluminum fiber shell, ceramic nano silicic acid aluminum fiberboard, ceramic nano silicic acid aluminum fiber mat, pottery
Porcelain nanometer aluminium silicate cordage, ceramic nano silicic acid aluminum fiber blanket.
Further, 600 DEG C of the finished product hot-face temperature when thermal coefficient≤0.065W/m.k.
Beneficial effects of the present invention are：
1, it solves industrial enterprise's waste inorganic fiber such as aluminum silicate fibre product largely to abandon, bury brought huge environment
Pollution and huge problem of resource waste, turn waste into wealth；
2, hardboard, spray paint, coating and nanometer aluminium silicate shell can be produced using waste and old inorfil；
3, the low heat conducting nano fiberboard of manufactured goods or thermal coefficient≤0.065W/m.k at 600 DEG C of shell hot-face temperature, are better than
Similar product in GB/T 16400-2015；
4, the method for the present invention is simple and easy, can produce huge economic benefit and social benefit, has broad application prospects, and fits
In popularization and application.
Detailed description of the invention
Fig. 1 show the process signal that a kind of waste and old inorfil regeneration of the present invention prepares the method for low heat conducting fiber product
Figure.
Fig. 2 show the flow diagram of a specific embodiment of the invention.
Specific embodiment
Below in conjunction with specific attached drawing the present invention is described in detail specific embodiment.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, they can be combined with each other to reaching
To superior technique effect.In the drawings of the following embodiments, the identical label that each attached drawing occurs represent identical feature or
Person's component, can be apply to different embodiments.
Following embodiments is only using waste and old alumina silicate fibre as raw material, it should be noted that this method is equally applicable to give up
The processing of the industrial inorganics fiber such as old glass fibre, rock wool and mineral wool.
As shown in Figure 1, a kind of waste and old inorfil of the embodiment of the present invention regenerates the method for preparing low heat conducting fiber product, it should
Method successively tentatively sieves waste and old aluminum silicate fibre product, is pre-processed, ingredient slurrying, forming drying, finished product.
Preliminary screening（Sorting）For removing other solid waste material, sundries etc..Pre-treatment step（Process）It is removed by impregnating
The processes such as miscellaneous, mechanical stirring, gravitational settling further remove the impurity packet contained in waste and old aluminum silicate fibre product raw material
The slag ball etc. for including itself institute's band, keeps the homogeneity of raw material.
Ingredient pulping stage（Technique）To raw material carry out decentralized processing, the additive of addition include bonding agent, modifying agent and
Binder；
Preferably, bonding agent select high-temperature nano bonding agent, high-temperature nano bonding agent include hydrophobic nano-silica, water and
Multicomponent Surfactants；The Multicomponent Surfactants include organic surface active agent and inorganic dispersion with hydrophilic group
Agent；The organic surface active agent is with two kinds in sulfonic group, sulfate group, amide groups, hydroxyl, ammonium and oxyethylene group
The compound of the above group；The inorganic dispersant is sodium tripolyphosphate, calgon, calcium lignosulfonate, sulfomethylated lignin
One or more of sour sodium；The mass ratio of hydrophobic nano silica and water is 20:80, Multicomponent Surfactants two
The mass ratio of the 13-15wt% of silica aqueous solution, organic surface active agent and inorganic dispersant is 10：（3-5）.High-temperature nano
The average pore size of bonding agent is generally less than 40nm, and partial size is according to disintegrating apparatus generally between 5um-1000um；It can significantly drop
The thermal coefficient of low material, the energy saving energy；The composed structure of recycled material can be made to densify, homogenize, improve recycled material
Performance improves its use reliability.
Preferably, modifying agent selects converted starch, the reason is that：Ceramic fibre in process, with metal part friction
When, negative electrical charge is often had, when mixed with the converted starch with positive charge, not only has good bonding force, but also
Have the effect of eliminating electrostatic, and other negatively charged additives can be adsorbed and be maintained in matrix, reclaimed fibre is equal
Even dispersion.
Preferably, binder selects silica solution or Aluminum sol or waterglass, have cohesive force is strong, high temperature resistant (1500 °C-
1600 °C), intensity after the molding of product can be improved.
Bonding agent, modifying agent and binder are creatively used in the present invention simultaneously, substantially increases the quality of manufactured goods.
A specific embodiment of the invention is as shown in Fig. 2, detailed process is as follows：
First the aluminosilicate fiber cotton of recycling unpacked in sorting workshop, sorted（Preliminary screening）, by 30% less recycling cotton of impurity
（Cotton is used in spraying）For spraying, remaining 70%（Cotton is used in regeneration）It is carried to flotation workshop and carries out gravity floatation, after gravity floatation
Impurity can prepare floor tile；Old aluminosilicate fiber cotton after flotation（About 95%）Additive is added（High-temperature nano bonding agent, modification
Agent, binder and water）Smash, stir evenly through beater in stock tank, be put into forming tank, by the method for vacuum suction filter into
Row molding is put into drying system and carries out heating, drying processing after demoulding, then modify, pack, storage.
Although having been presented for several embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment is only exemplary, no
It should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (10)
1. a kind of waste and old inorfil regenerates the method for preparing low heat conducting fiber product, which is characterized in that this method is to waste and old nothing
Machine fibre is successively tentatively sieved, is pre-processed, ingredient slurrying, forming drying, finished product；The inorfil includes
Alumina silicate fibre, glass fibre, rock wool and mineral wool.
2. waste and old inorfil as described in claim 1 regenerates the method for preparing low heat conducting fiber product, which is characterized in that institute
Pre-treatment step is stated to impregnate one or more of removal of impurities, mechanical stirring, gravitational settling.
3. waste and old inorfil as described in claim 1 regenerates the method for preparing low heat conducting fiber product, which is characterized in that institute
Stating ingredient pulping stage is specially：By additive being added, in stock tank in pretreated waste and old inorfil product raw material
It is middle to be smashed through beater, it stirs evenly, obtains slurry；The additive includes bonding agent, modifying agent and binder.
4. waste and old inorfil as described in claim 1 regenerates the method for preparing low heat conducting fiber product, which is characterized in that institute
Stating molding baking step is：The slurry that pulping stage is obtained is put into forming tank, is formed by the method for vacuum suction filter, demoulding
After be put into drying system carry out drying and processing.
5. waste and old inorfil as claimed in claim 4 regenerates the method for preparing low heat conducting fiber product, which is characterized in that
Heating, drying is used when drying and processing.
6. waste and old inorfil as claimed in claim 3 regenerates the method for preparing low heat conducting fiber product, which is characterized in that institute
Stating bonding agent is high-temperature nano bonding agent, and the high-temperature nano bonding agent includes hydrophobic nano-silica, water and multicomponent
Surfactant；
The Multicomponent Surfactants include organic surface active agent and inorganic dispersant with hydrophilic group；
The organic surface active agent is with two kinds in sulfonic group, sulfate group, amide groups, hydroxyl, ammonium and oxyethylene group
The compound of the above group；
The inorganic dispersant be one of sodium tripolyphosphate, calgon, calcium lignosulfonate, sodium lignin sulfonate or
It is several；
The mass ratio of hydrophobic nano silica and water is 20:80, Multicomponent Surfactants are aqueous silica solution
The mass ratio of 13-15wt%, organic surface active agent and inorganic dispersant is 10：(3-5).
7. waste and old inorfil as claimed in claim 3 regenerates the method for preparing low heat conducting fiber product, which is characterized in that institute
Stating modifying agent is converted starch, and the binder is silica solution or Aluminum sol or waterglass.
8. waste and old inorfil as claimed in claim 3 regenerates the method for preparing low heat conducting fiber product, which is characterized in that institute
The mass ratio for stating bonding agent, modifying agent and binder is 15-30：2-5：8-15.
9. waste and old inorfil as described in claim 1 regenerates the method for preparing low heat conducting fiber product, which is characterized in that institute
Stating finished product includes low heat conducting nano fiber shell, low heat conducting nano fiberboard, low heat conducting nano fibrofelt, low heat conducting nano fiber
Spray block and low heat conducting nano fiber coating.
10. as the described in any item waste and old inorfils of claim 1-10 regenerate the method for preparing low heat conducting fiber product,
It is characterized in that, thermal coefficient≤0.065W/m.k at 600 DEG C of the finished product hot-face temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810725716.6A CN108863278A (en) | 2018-07-04 | 2018-07-04 | Waste and old inorfil regenerates the method for preparing low heat conducting fiber product |
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| CN201810725716.6A CN108863278A (en) | 2018-07-04 | 2018-07-04 | Waste and old inorfil regenerates the method for preparing low heat conducting fiber product |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965397A (en) * | 2019-10-28 | 2020-04-07 | 上海伊索热能技术股份有限公司 | Preparation method of ceramic fiber non-expansion liner |
| CN113318518A (en) * | 2021-05-26 | 2021-08-31 | 中国石油大学(北京) | Filter element, preparation method and application thereof |
| CN115010457A (en) * | 2022-05-09 | 2022-09-06 | 唐山顺浩环保科技有限公司 | Superfine ceramic fiber cotton thermal insulation pipe shell and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965397A (en) * | 2019-10-28 | 2020-04-07 | 上海伊索热能技术股份有限公司 | Preparation method of ceramic fiber non-expansion liner |
| CN113318518A (en) * | 2021-05-26 | 2021-08-31 | 中国石油大学(北京) | Filter element, preparation method and application thereof |
| CN115010457A (en) * | 2022-05-09 | 2022-09-06 | 唐山顺浩环保科技有限公司 | Superfine ceramic fiber cotton thermal insulation pipe shell and preparation method thereof |
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Application publication date: 20181123 |