CN108046581B - A kind of nice foundry sand periphery solid waste material dry process technique - Google Patents
A kind of nice foundry sand periphery solid waste material dry process technique Download PDFInfo
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- CN108046581B CN108046581B CN201810008737.6A CN201810008737A CN108046581B CN 108046581 B CN108046581 B CN 108046581B CN 201810008737 A CN201810008737 A CN 201810008737A CN 108046581 B CN108046581 B CN 108046581B
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- solid waste
- foundry sand
- raw material
- nice foundry
- dry process
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to nice foundry sand fixed-end forces technical fields, more particularly to a kind of nice foundry sand periphery solid waste material dry process technique, including raw material drying, break up, shredding and selection by winnowing, be classified, crush and screen, have simple for process, efficient advantage is recycled, and there are no pollution to the environment.
Description
Technical field
The invention belongs to nice foundry sand fixed-end forces technical field more particularly to a kind of nice foundry sand periphery solid waste material dry process
Technique.
Background technology
Nice foundry sand is one of the most extensive new material of current casting speciality application, and main component is high-quality high-grade alumina
Mine is raw material, be hot investment casting, precoated sand, self-hardening sand novel casting material.Nice foundry sand has the following advantages that：It is not only suitable for alkali
Property metal, and be suitable for acid metal；Sedimentation coefficient is small, fits refractoriness height, 1650 DEG C of cast carbon steel heavy section castings, intracavitary molding sand is not
Burning is received, not dusting, not scab, can be described as environmentally protective precision casting sand.The main chemical compositions of nice foundry sand：AL2O3>=70%,
Fe2O3≤3%；Particle shape：It is spherical；Dihedral coefficient：≤ 1.1 poles are like spherical；Density（Packing density）：1.95-2.05（g/cm3）；It is resistance to
Fiery degree：1800-1900℃；Coefficient of thermal expansion：0.13%（1000 DEG C are heated 10 minutes）.Since its main component is aluminium oxide, so
Fire resistance is fine, and refractoriness >=1850 DEG C can be suitably used for casting various metals and alloy.
But during producing nice foundry sand, leaving a large amount of solid waste, pile up like a mountain, at present domestic existing skill
Art can not recycle completely, and the very difficult separation of fibrous material especially therein, environmental pollution can be caused by wafting, serious shadow
Ecological environment around having rung.
Invention content
The object of the present invention is to provide a kind of nice foundry sand periphery solid waste material dry process techniques.
In order to achieve the above objectives, the technical solution adopted by the present invention is：
A kind of nice foundry sand periphery solid waste material dry process technique, includes the following steps：
（1）Raw material drying：The solid waste generated in nice foundry sand production process is subjected to drying and processing, is made in solid waste
Water content be less than 5%；
（2）It breaks up：Dried raw material is sent into horizontal drum drying blender through belt conveyor to break up
2-5min is handled, makes stock dispersion to grain diameter no more than 10mm, non-agglomerate；
（3）Shredding and selection by winnowing：The raw material broken up is sent into hammer slice type by screenings after linear vibrating screen vibrosieve
Crusher crushes and shredding, is processed into the discrete particles shape material that grain diameter is 2-5mm, oversize is through bag filter
The aidr bells blast system of connection enters separable programming；
（4）Classification：The raw material of shredding carries out secondary vibration screening process through multilayer linear vibration screen, wherein particle
Oversize of the diameter more than 10-30 mesh is recovered to be used as nice foundry sand finished product, and screenings is sent into smart ball milling and carries out levigate processing
Recycling is used as refractory material mullite ingredient fine powder；
（5）It crushes and screens：By step（3）The middle raw material into aidr bells blast system is sent into high speed disintegrator progress, and shredding is beaten again
It dissipates, after screened, oversize is collected as alumina silicate fibre through aidr bells blast system use again, and screenings is sent into essence after unhairing
Levigate processing recycling uses ball milling as refractory material mullite ingredient fine powder again.
Further, the step（1）Middle solid waste is stored in waste bin, and raw material is heated to 60- using air-heater
80 DEG C of drying 2-5min.
Further, the step（3）The frequency of cathetus vibrating screen vibrations is 1000 times/it is per minute, hammer slice type is broken
The crusher machine time is 1min；Bag filter is electric pulse bag filter, filter area 220m2。
Further, the step（3）And step（5）Middle selection by winnowing flow system flow is 2000m3/ h, wind pressure 1000Pa.
Further, the step（4）And step（5）In the smart ball-milling treatment time be 6-8h, be milled to raw material heating
To 60 ° or more, moisture content of the raw material is less than 1%, and product grading is not more than 325 mesh.
Present invention has the advantage that：The waste material generated in nice foundry sand production process is re-used in the present invention, is carried out
Mullite fine powder, part nice foundry sand and alumina silicate fibre are isolated after a series of processing, and the product of recycling is continuing with, and are saved
About raw material, solve original solid waste volume take up an area it is big, stack it is of high cost, turn waste into wealth, increase economic benefit, reduce
Pollution.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific implementation mode
As shown, a kind of nice foundry sand periphery solid waste material dry process technique, includes the following steps：First, raw material drying：
The solid waste generated in the nice foundry sand production process being stored in waste bin is heated to 60-80 DEG C of drying 2- using air-heater
5min carries out drying and processing, and the water content in solid waste is made to be less than 5%；Secondly, it breaks up：Dried raw material is percutaneous
Band conveyer is sent into horizontal drum drying blender and carries out breaing up processing 2-5min, and stock dispersion to grain diameter is made to be not more than
10mm, non-agglomerate；Again, raw material shredding and selection by winnowing：By the raw material broken up by linear vibrating screen with 1000 times/it is per minute
Screenings, which is sent into hammer crusher and is crushed 1min, after frequency vibrosieve crushes and shredding, and it is 2- to be processed into grain diameter
The discrete particles shape material of 5mm, the aidr bells blast system that oversize is connected through electric pulse bag filter enter separable programming, selection by winnowing system
System flow is 2000m3/ h, wind pressure 1000Pa, wherein the filter area of electric pulse bag filter is 220m2；Divided again
Grade：The raw material of shredding through multilayer linear vibration screen carry out secondary vibration screening process, wherein grain diameter 10-30 mesh with
On oversize it is recovered used as nice foundry sand finished product, screenings is sent into smart ball milling and carries out levigate processing recycling as fire proofed wood
Expect that mullite ingredient fine powder uses, wherein the smart ball-milling treatment time is 6-8h, is milled to raw material and is warming up to 60 ° or more, raw material contains
Water rate is less than 1%, and product grading is not more than 325 mesh；Finally crush and screen：Raw material into aidr bells blast system is sent into high speed disintegrator
It carries out shredding again to break up, after screened, oversize is collected as alumina silicate fibre through aidr bells blast system use again, controls selection by winnowing
Flow system flow is 2000m3/ h, wind pressure 1000Pa, screenings is sent into smart ball milling after unhairing, and levigate processing recycling is made again
For refractory material mullite ingredient fine powder use, the smart ball-milling treatment time still be 6-8h, be milled to raw material be warming up to 60 ° with
On, moisture content of the raw material is less than 1%, and product grading is not more than 325 mesh.
The solid waste dry process technique of the present invention detaches the waste that periphery in nice foundry sand production process generates, right
Waste is re-used, and the nice foundry sand finished product collected after detaching market price per ton is 3000 yuan or so, recycling
Aluminosilicate fiber accounts for the 10% of solid waste weight, and price is per ton at 2000 yuan, and the price that the mullite fine powder of collection is per ton also exists
2000 yuan or so, it is dusted processing to producing each link using electric pulse cleaner in entire production procedure, is prevented
Because producing the secondary pollution to environment, the full recycling purpose of waste material is realized, allows industrial waste to recycle, greatly saves
Raw material, solve original solid waste volume take up an area it is big, stack it is of high cost, greatly improved serious pollution environment (such as：Solid waste
Aluminosilicate fiber mao mao is waved everywhere in material) air has been purified, it can ensure that no secondary slugs generate and secondary pollution ring substantially
The phenomenon that border.
Claims (5)
1. a kind of nice foundry sand periphery solid waste material dry process technique, which is characterized in that include the following steps：
（1）Raw material drying：The solid waste generated in nice foundry sand production process is subjected to drying and processing, makes containing in solid waste
Water is less than 5%；
（2）It breaks up：Dried raw material is sent into horizontal drum drying blender through belt conveyor to carry out breaing up processing
2-5min makes stock dispersion to grain diameter no more than 10mm, non-agglomerate；
（3）Shredding and selection by winnowing：The raw material broken up is sent into hammer slice type by screenings after linear vibrating screen vibrosieve to be crushed
Machine crushes and shredding, is processed into the discrete particles shape material that grain diameter is 2-5mm, and oversize is connected through bag filter
Aidr bells blast system enter separable programming；
（4）Classification：The raw material of shredding carries out secondary vibration screening process through multilayer linear vibration screen, wherein grain diameter exists
More than 30 mesh oversize is recovered to be used as nice foundry sand finished product, and screenings is sent into smart ball milling and carries out levigate processing recycling conduct
Refractory material mullite ingredient fine powder uses；
（5）It crushes and screens：By step（3）The middle raw material into aidr bells blast system is sent into high speed disintegrator progress, and shredding is broken up again,
After screened, oversize is collected as alumina silicate fibre through aidr bells blast system use again, and screenings is sent into smart ball after unhairing
Levigate processing recycling uses mill as refractory material mullite ingredient fine powder again.
2. solid waste material dry process technique in nice foundry sand periphery as described in claim 1, it is characterised in that：The step（1）In
Solid waste is stored in waste bin, and raw material is heated to 60-80 DEG C of drying 2-5min using air-heater.
3. solid waste material dry process technique in nice foundry sand periphery as described in claim 1, it is characterised in that：The step（3）In
Linear vibrating screen vibrations frequency be 1000 times/it is per minute, hammer crusher be crushed the time be 1min；Bag filter is electricity
Impulse bag type dust collector, filter area 220m2。
4. solid waste material dry process technique in nice foundry sand periphery as described in claim 1, it is characterised in that：The step（3）With
Step（5）Middle selection by winnowing flow system flow is 2000m3/ h, wind pressure 1000Pa.
5. solid waste material dry process technique in nice foundry sand periphery as described in claim 1, it is characterised in that：The step（4）With
Step（5）In the smart ball-milling treatment time be 6-8h, be milled to raw material and be warming up to 60 ° or more, moisture content of the raw material is less than 1%, finished product
Granularity is not more than 325 mesh.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008737.6A CN108046581B (en) | 2018-01-04 | 2018-01-04 | A kind of nice foundry sand periphery solid waste material dry process technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008737.6A CN108046581B (en) | 2018-01-04 | 2018-01-04 | A kind of nice foundry sand periphery solid waste material dry process technique |
Publications (2)
| Publication Number | Publication Date |
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| CN108046581A CN108046581A (en) | 2018-05-18 |
| CN108046581B true CN108046581B (en) | 2018-10-02 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101381100B (en) * | 2008-10-10 | 2010-08-11 | 全南晶环科技有限责任公司 | Method for recovering zirconia, mullite and rare-earth from foundry molding sand waste |
| CN101870562B (en) * | 2010-06-30 | 2012-05-02 | 泰州枫叶冶金设备有限公司 | Precision casting waste sand reusing method |
| CN103708752A (en) * | 2013-12-02 | 2014-04-09 | 洛阳麦德陶粒有限公司 | Method for production of ceramsite sand from tile grinding waste |
| CN103639027B (en) * | 2013-12-06 | 2015-07-01 | 中信大锰矿业有限责任公司大新锰矿分公司 | Dry separation method of manganese carbonate ore |
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