CN105834356B - Precision casting sand production line and production method using flint clay as primary raw material - Google Patents
Precision casting sand production line and production method using flint clay as primary raw material Download PDFInfo
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- CN105834356B CN105834356B CN201610335030.7A CN201610335030A CN105834356B CN 105834356 B CN105834356 B CN 105834356B CN 201610335030 A CN201610335030 A CN 201610335030A CN 105834356 B CN105834356 B CN 105834356B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/14—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material
- B22C5/16—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material with conveyors or other equipment for feeding the material
Abstract
The invention discloses a kind of precision casting sand production line and production method using flint clay as primary raw material, including crushing system, pulverized coal preparation system, granulating system, firing system, closed roller, stranding sand machine, finished sand is transported to warehouse for finished product by bucket elevator, comprises the following steps：1) flint clay mineral aggregate is crushed to less than 20mm, then be crushed to less than 10mm；2) dry grind to the particle of 10 20 mesh, then dry grind to dry grinding powder, dry grinding powder is separately added into wet milk with additive, in wet milk wet-milling to 10 microns of mud；3) mud forms the spherical powder particle of 20 120 mesh by iron removaling, spray drying；Spherical powder particle is broken up to 200 mesh, is classified into two kinds of coarse powder material, fine powder material qualified powders；4) casting model powder raw material base, second polishing is made in qualified powder in sugar coating machine one, is delivered to rotary kiln and burns till kiln hood；5) qualified material base burns till casting model powder product in rotary kiln, enters closed roller；6) elevator is promoted to warehouse for finished product after casting sand separation after cooling down.
Description
Technical field
The present invention relates to precision casting technology field, specifically a kind of hot investment casting using flint clay as primary raw material
Sand production line and production method.
Background technology
Casting model powder is a kind of particulate refractory used in metal casting technique.The grain shape and grading of casting model powder
Performance such as permeability of mobility, compactibility, gas permeability, intensity and anti-liquid metal etc. is used for have a major impact.Fire resisting
Degree, heat endurance, easily defeated and dispersed, reuse it is strong etc. be casting model powder selection with using when the emphasis index and characteristic that consider.
At present using casting model powder be mainly using silica as main component, quartz for principal crystalline phase quartz sand (silica sand) and
Special sand (such as limestone sand, magnesia, zircon sand, olivine sand, nice foundry sand).Foundry industry experienced using natural sand and artificial silicon
The sand stage.In addition, the use of special sand also gradually increases, wherein being used using aluminum oxide as important component nice foundry sand more.And silicon
Sand facies ratio, the latter's thermal coefficient of expansion is small, high refractoriness is high, and dihedral coefficient is small, surface is smooth, good permeability.But the latter is using excellent
The techniques such as matter bauxite is raw material high-temperature fusion, centrifugation balling-up are made, and size distribution is wide, high energy consumption.In addition, want to obtain grain
Qualified casting model powder is spent, strict screening need to be carried out to product, accepted product percentage is low, and waste is largely used to the energy that high temperature is burnt till.
The content of the invention
For solving the above-mentioned problems of the prior art, it is an object of the present invention to provide one kind using flint clay to be main former
The precision casting sand production line of material, relate to the use of flint clay and prepare that dihedral coefficient is small, firing sample size distribution for primary raw material
Rationally, the process system of the smooth novel casting sand in surface, the present invention are realized the abundant refinement of material using multistage ball milling, passed through
Classified grinding is adapted to different grain size pan feeding, improves grinding efficiency, reduces energy consumption.
The present invention also provides a kind of hot investment casting sand manufacturing method using flint clay as primary raw material.
The present invention solve technical problem technical scheme be：
A kind of precision casting sand production line using flint clay as primary raw material, including be sequentially arranged by flint clay mineral aggregate powder
Crushing system that is broken and wearing into mud, the pulverized coal preparation system that slurry is made to graininess powder, qualified powder is made to casting model powder life
The granulating system of material base, casting model powder raw material base is burnt till to the firing system of finished sand, the closed rolling by finished sand conveying and cooling
Cylinder, the stranding sand machine for separating the mild adhesion particle on finished sand, finished sand are transported to warehouse for finished product by bucket elevator.
The crushing system includes jaw crusher, impact crusher, dry mill, the wet milk of order arrangement successively,
The pulverized coal preparation system include successively order arrangement slurry iron-removing machine, spray dryer, powder beater, the granulating system include according to
Sugar coating machine one, screening machine one, sugar coating machine two, the screening machine two of secondary order arrangement, in sugar coating machine one plus casting model powder life is made in water
Material base；Second polishing is carried out in sugar coating machine two.
Firing system includes rotary kiln, and the rotary kiln is connected with closed roller, the rotating speed of the closed roller compared with
Rotary kiln rotating speed is fast, angle of inclination is big compared with rotary kiln, and rotary kiln casting model powder product is directly entered closed roller, casting model powder production
Product are tilted in closed roller, thin layer is conveyed and cooled down；Lead to cold air air cooling in closed roller, be cast the heating of sand product
Air is transported to rotary kiln by rotary kiln ascending air, the part as combustion air, and closed roller is outer to be sprayed by pipeline
Leaching cooling water cooling, cooling water are heated rear portion and are allocated as ball mill by wet process water.
Sugar coating machine one uses high speed sugar coating machine, and sugar coating machine two uses low speed sugar coating machine.
A kind of production method using flint clay as the precision casting sand of primary raw material, comprise the following steps：
1) the flint clay mineral aggregate of exploitation is crushed to less than 20mm by the jaw crusher of crushing system, then uses impact type
Crusher in crushing is extremely less than 10mm；
2) dry grind to the particle of 10-20 mesh by Ball Mill in the dry mill of crushing system, then dry grinded through continuous to small
In the dry grinding powder of 200 mesh particles, the additive such as sintering aid of the dry grinding powder through metering and certain mass, grinding aid, plasticiser
The interval wet milk of crushing system is separately added into, in wet milk wet-milling to 10 microns of mud；Part during wet milk wet-milling
The cooling water of the closed conduit of moisture or whole moisture from closed roller；
3) after the slurry iron-removing machine iron removaling of pulverized coal preparation system, spray-dried machine is spray-dried to form 20-120 mesh mud
Spherical powder particle；Consistency is high, casting model powder raw material ball of smooth in appearance to adapt to be rolled to, and need to use powder beater or break up
Machine is broken up to 200 mesh to being spray-dried obtained spherical powder particle, is classified into two kinds of coarse powder material, fine powder material qualified powders,
Coarse powder material is transferred to thick raw material silo, and fine powder material is transferred to thin raw material silo；
4) qualified powder raw material silo by gate valve, metering after by a certain percentage directly to granulating system high speed sugar-coat
Machine one feeds, and qualified powder is in sugar coating machine one plus casting model powder raw material base is made in suitable quantity of water；The screened machine one of casting model powder green compact sieves
It is divided into qualified material base and unqualified material base, qualified material base carries out second polishing on the sugar coating machine two of low speed, then by screening machine
Two screen out fine powder, are then fed directly to rotary kiln and burn till kiln hood, do not conform to ball material base and all return powder beater recycling；After polishing
The a small amount of fine powder sifted out directly enters thin raw material silo；
5) qualified material base burns till casting model powder product in rotary kiln, and rotary kiln casting model powder product directly enters closed roller
Middle inclination, thin layer are conveyed and cooled down；
6) casting model powder product is directly promoted to after rubbing sand machine with the hands and separating mild adhesion particle by bucket elevator after cooling down
Warehouse for finished product.
The closed roller that closed drum rotation speed in the step 5) is fast compared with rotary kiln rotating speed, angle of inclination is big；Closed rolling
Cylinder external application shower water cooling, cooling water are used for the wet ball grinding water of ball mill by wet process after being heated；Lead in the closed roller
Cold air air cooling, the air for being cast sand heating are used for a part for rotary kiln combustion air.
Beneficial effects of the present invention：
1. the present invention realizes the abundant refinement of material by using multistage ball milling, it is adapted to different grain size to enter by classified grinding
Material, grinding efficiency is improved, reduce energy consumption.
2. casting model powder green compact reenter low speed sugar coating machine, second polishing is carried out, favorably obtains smooth surface, screened out and drop carefully
Powder, not only improve elimination burn till casting model powder because surface fine grained easily burn stick together or formed surface spikes, meanwhile, recovery it is thin
Powder can recycle.
3. strict flouring technology and granulation process, it is ensured that burning till casting model powder, disposably whole is qualified, avoids to kiln discharge heat
Casting model powder sieved, and improve accepted product percentage, energy waste is burnt till in reduction.
4. thin layer conveys kiln discharge casting model powder forward in closed roller, in this course of conveying, drums inside uses cold wind
Inverse material flow direction circulation cooling material, roller is outside using pipeline spray water cooling；Cold wind directly heats through its casting model powder waste heat,
For rotary kiln combustion air；Cooling water absorbs the laggard wet milk of waste heat scattered outside roller, promotes slurry grinding.
5. because the rotating speed of closed roller is fast compared with rotary kiln rotating speed, cooling is helped speed up；Angle of inclination is big compared with rotary kiln,
Be advantageous to air-flow rising.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Embodiment
For a better understanding of the present invention, embodiments of the present invention are explained in detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of precision casting sand production line using flint clay as primary raw material, including be sequentially arranged by Jiao
Jewel mineral aggregate crushes and wears into the crushing system of mud, slurry is made to the pulverized coal preparation system of graininess powder, by qualified powder system
Granulating system into casting model powder raw material base, the firing system that casting model powder raw material base is burnt till to finished sand, by finished sand conveying and cold
But closed roller, the stranding sand machine by the mild adhesion particle separation on finished sand, finished sand are transported to by bucket elevator
Warehouse for finished product.
The crushing system includes jaw crusher, impact crusher, dry mill, the wet milk of order arrangement successively,
The pulverized coal preparation system include successively order arrangement slurry iron-removing machine, spray dryer, powder beater, the granulating system include according to
Sugar coating machine one, screening machine one, sugar coating machine two, the screening machine two of secondary order arrangement, in sugar coating machine one plus casting model powder life is made in water
Material base；Second polishing is carried out in sugar coating machine two.
Firing system includes rotary kiln, and the rotary kiln is connected with closed roller, the rotating speed of the closed roller compared with
Rotary kiln rotating speed is fast, angle of inclination is big compared with rotary kiln, and rotary kiln casting model powder product is directly entered closed roller, casting model powder production
Product are tilted in closed roller, thin layer is conveyed and cooled down；Lead to cold air air cooling in closed roller, be cast the heating of sand product
Air is transported to rotary kiln by rotary kiln ascending air, the part as combustion air.Closed roller is outer to be sprayed by pipeline
Leaching cooling water cooling, cooling water are heated rear portion and are allocated as ball mill by wet process water.To improve grinding efficiency.Due to closed roller
Rotating speed it is fast compared with rotary kiln rotating speed, help speed up cooling；Angle of inclination is big compared with rotary kiln, is advantageous to air-flow rising.
The sugar coating machine one uses high speed sugar coating machine, and sugar coating machine two uses low speed sugar coating machine.
A kind of production method using flint clay as the precision casting sand of primary raw material, comprise the following steps：
1) the flint clay mineral aggregate of exploitation is crushed to less than 20mm by the jaw crusher of crushing system, then uses impact type
Crusher in crushing is extremely less than 10mm；
2) dry grind to the particle of 10-20 mesh by Ball Mill in the dry mill of crushing system, then dry grinded through continuous to small
In the dry grinding powder of 200 mesh particles, the additive such as sintering aid of the dry grinding powder through metering and certain mass, grinding aid, plasticiser
The interval wet milk of crushing system is separately added into, in wet milk wet-milling to 10 microns of mud；Part during wet milk wet-milling
The cooling water of the closed conduit of moisture or whole moisture from closed roller；
3) after the slurry iron-removing machine iron removaling of pulverized coal preparation system, spray-dried machine is spray-dried to form 20-120 mesh mud
Spherical powder particle；Consistency is high, casting model powder raw material ball of smooth in appearance to adapt to be rolled to, and need to use powder beater or break up
Machine is broken up to 200 mesh to being spray-dried obtained spherical powder particle, is classified into two kinds of coarse powder material, fine powder material qualified powders,
Coarse powder material is transferred to thick raw material silo, and fine powder material is transferred to thin raw material silo；
4) qualified powder raw material silo by gate valve, metering after by a certain percentage directly to granulating system high speed sugar-coat
Machine one feeds, and qualified powder is in sugar coating machine one plus casting model powder raw material base is made in suitable quantity of water；The screened machine one of casting model powder green compact sieves
It is divided into qualified material base and unqualified material base, qualified material base carries out second polishing on the sugar coating machine two of low speed, then by screening machine
Two screen out fine powder, are then fed directly to rotary kiln and burn till kiln hood, do not conform to ball material base and all return powder beater recycling；After polishing
The a small amount of fine powder sifted out directly enters thin raw material silo；
5) qualified material base burns till casting model powder product in rotary kiln, and rotary kiln casting model powder product directly enters closed roller
Middle inclination, thin layer are conveyed and cooled down；
6) casting model powder product is directly promoted to after rubbing sand machine with the hands and separating mild adhesion particle by bucket elevator after cooling down
Warehouse for finished product.
The closed roller that closed drum rotation speed in the step 5) is fast compared with rotary kiln rotating speed, angle of inclination is big；Closed rolling
Cylinder external application shower water cooling, cooling water are used for the wet ball grinding water of ball mill by wet process after being heated；Lead in the closed roller
Cold air air cooling, the air for being cast sand heating are used for a part for rotary kiln combustion air.
The special-effect of technique and system：
1) multistage ball milling realizes the abundant refinement of material, while classified grinding is adapted to different grain size pan feeding, improves grinding effect
Rate, reduce energy consumption.
2) casting model powder green compact reenter low speed sugar coating machine, carry out second polishing, favorably obtain smooth surface, screen out and drop carefully
Powder, not only improve elimination burn till casting model powder because surface fine grained easily burn stick together or formed surface spikes, meanwhile, recovery it is thin
Powder can recycle.
3) strict flouring technology and granulation process, it is ensured that burning till casting model powder, disposably whole is qualified, avoids to kiln discharge heat
Casting model powder sieved, and improve accepted product percentage, energy waste is burnt till in reduction.
4) thin layer conveys kiln discharge casting model powder forward in closed roller, and in this course of conveying, drums inside uses cold wind
Inverse material flow direction circulation cooling material, roller is directly heated using spray water cooling, the cast sand waste heat of cold wind outside, for returning
Rotary kiln combustion air, cooling water promote slurry grinding through dissipating the laggard wet milk of waste-heat outside roller.
Although above-mentioned the embodiment of invention is described with reference to accompanying drawing, not to the scope of the present invention
Limitation, on the basis of technical scheme, those skilled in the art need not pay creative work and can make
Various modifications or deformation still within protection scope of the present invention.
Claims (6)
1. a kind of production method using flint clay as the precision casting sand of primary raw material, it is characterized in that, comprise the following steps：
1）The flint clay mineral aggregate of exploitation is crushed to less than 20mm by the jaw crusher of crushing system, then crushed with impact type
Crusher machine is extremely less than 10 mm；
2）Dry grinded in the dry mill of crushing system by Ball Mill to the particle of 10-20 mesh, then through continuous dry grinding to less than 200
The dry grinding powder of mesh particle, dry grinding powder are separately added into broken system through measuring with the sintering aid of certain mass, grinding aid, plasticiser
The wet milk of system, in wet milk wet-milling to 10 microns of mud；Partial moisture or whole moisture during wet milk wet-milling come from
The cooling water of the closed conduit of closed roller；
3）For mud after the slurry iron-removing machine iron removaling of pulverized coal preparation system, spray-dried machine is spray-dried the ball to form 20-120 mesh
Shape powder granule；Consistency is high, casting model powder raw material base of smooth in appearance to adapt to be rolled to, using powder beater or beater to spray
Mist is dried obtained spherical powder particle and broken up to 200 mesh, is classified into two kinds of coarse powder material, fine powder material qualified powders, coarse powder material
Thick raw material silo is transferred to, fine powder material is transferred to thin raw material silo；
4）Qualified powder raw material silo by gate valve, metering after by a certain percentage directly to granulating system high speed sugar coating machine one
Charging, qualified powder is in sugar coating machine one plus casting model powder raw material base is made in suitable quantity of water；The screened machine one of casting model powder raw material base sieves
For qualified material base and unqualified material base, qualified material base carries out second polishing on the sugar coating machine two of low speed, then by screening machine two
Fine powder is screened out, rotary kiln is then fed directly to and burns till kiln hood, unqualified material base all returns powder beater and recycled；Sieve after polishing
The a small amount of fine powder gone out directly enters thin raw material silo；
5）Qualified material base burns till casting model powder product in rotary kiln, and rotary kiln casting model powder product directly enters to incline in closed roller
Tiltedly, thin layer is conveyed and cooled down；
6）Casting model powder product is directly promoted to finished product after rubbing sand machine with the hands and separating mild adhesion particle by bucket elevator after cooling
Storehouse.
2. a kind of production method using flint clay as the precision casting sand of primary raw material as claimed in claim 1, it is characterized in that,
The step 5）In closed roller using the closed roller that rotating speed is fast compared with rotary kiln rotating speed, angle of inclination is big；Outside closed roller
With spray water cooling, cooling water is used for the wet ball grinding water of wet milk after being heated；Lead to cold air wind in the closed roller
Cooling, the air for being cast sand heating are used for a part for rotary kiln combustion air.
3. a kind of utilize the production method using flint clay as the precision casting sand of primary raw material as described in claim 1 or 2
Precision casting sand production line, it is characterized in that, including the broken system that flint clay mineral aggregate is crushed and worn into mud being sequentially arranged
System, the pulverized coal preparation system that slurry is made to graininess powder, the granulating system that qualified powder is made to casting model powder raw material base, will casting
Sand raw material base burn till the firing system of finished sand, the closed roller that finished sand is conveyed and cooled down, will be on finished sand it is slight viscous
Even the stranding sand machine of particle separation, finished sand are transported to warehouse for finished product by bucket elevator.
4. precision casting sand production line as claimed in claim 3, it is characterized in that, the crushing system includes order successively and arranged
Jaw crusher, impact crusher, dry mill, wet milk, the pulverized coal preparation system include successively order arrangement mud remove
Iron machine, spray dryer, powder beater, the granulating system include sugar coating machine one, screening machine one, the sugar coating machine of order arrangement successively
2nd, screening machine two, in sugar coating machine one plus casting model powder raw material base is made in water；Second polishing is carried out in sugar coating machine two.
5. precision casting sand production line as claimed in claim 3, it is characterized in that, the firing system includes rotary kiln, described
Rotary kiln is connected with closed roller, and the rotating speed of the closed roller is fast compared with rotary kiln rotating speed, angle of inclination is big compared with rotary kiln,
Rotary kiln casting model powder product is directly entered closed roller, and casting model powder product tilts in closed roller, thin layer conveys and cold
But；Lead to cold air air cooling in closed roller, the air for being cast the heating of sand product is transported to back by rotary kiln ascending air
Rotary kiln, the part as combustion air, closed roller is outer by pipeline spraying cooling water cooling, part after cooling water is heated
As wet milk water.
6. the precision casting sand production line using flint clay as primary raw material as claimed in claim 3, it is characterized in that, the sugar-coat
Machine one uses high speed sugar coating machine, and sugar coating machine two uses low speed sugar coating machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610335030.7A CN105834356B (en) | 2016-05-19 | 2016-05-19 | Precision casting sand production line and production method using flint clay as primary raw material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335030.7A CN105834356B (en) | 2016-05-19 | 2016-05-19 | Precision casting sand production line and production method using flint clay as primary raw material |
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| CN105834356B true CN105834356B (en) | 2018-01-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120021431A (en) * | 2010-07-30 | 2012-03-09 | 주식회사 티에스씨 | Manufacture method and apparatus for casting sand |
| CN203295372U (en) * | 2013-05-31 | 2013-11-20 | 金刚新材料股份有限公司 | Flint clay clinker production system |
| JP2014024097A (en) * | 2012-07-27 | 2014-02-06 | Asahi Tec Corp | Regeneration method of casting sand |
| CN105149504A (en) * | 2015-09-30 | 2015-12-16 | 金刚新材料股份有限公司 | Production line of precision casting sand |
| CN205684657U (en) * | 2016-05-19 | 2016-11-16 | 山东金璞新材料有限公司 | Precision casting sand production line with flint clay as primary raw material |
-
2016
- 2016-05-19 CN CN201610335030.7A patent/CN105834356B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120021431A (en) * | 2010-07-30 | 2012-03-09 | 주식회사 티에스씨 | Manufacture method and apparatus for casting sand |
| JP2014024097A (en) * | 2012-07-27 | 2014-02-06 | Asahi Tec Corp | Regeneration method of casting sand |
| CN203295372U (en) * | 2013-05-31 | 2013-11-20 | 金刚新材料股份有限公司 | Flint clay clinker production system |
| CN105149504A (en) * | 2015-09-30 | 2015-12-16 | 金刚新材料股份有限公司 | Production line of precision casting sand |
| CN205684657U (en) * | 2016-05-19 | 2016-11-16 | 山东金璞新材料有限公司 | Precision casting sand production line with flint clay as primary raw material |
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