CN103664198A - Mullite recycling method and mullite recycling system - Google Patents
Mullite recycling method and mullite recycling system Download PDFInfo
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- CN103664198A CN103664198A CN201210315045.9A CN201210315045A CN103664198A CN 103664198 A CN103664198 A CN 103664198A CN 201210315045 A CN201210315045 A CN 201210315045A CN 103664198 A CN103664198 A CN 103664198A
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- mullite
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Abstract
The invention discloses a mullite recycling method which mainly comprises the following steps: crushing a waste shell mold with mullite grains into shell mold debris of a preset size, further exerting an external force in a preset mode to the shell mold debris, so as to obtain a mixture product with mixed mullite grains and adhesive layers, and finally separating out the mullite grains in the mixture in a screening mode, thereby recycling and reusing the mullite grains in the waste shell mold with low cost. The expense on purchasing mullite is greatly reduced, useful resources are prevented from being excessively wasted, and especially the residue after screening treatment is applicable to reuse as a ceramic raw material as the main mullite grains in the residue are separated out.
Description
Technical field
The present invention is about a kind of mullite recovery technology, refers to especially a kind ofly can in the middle of the useless shell mould that contains mullite particle, reclaim the method for mullite particle and relative recovery system.
Background technology
At present, the precision casting mode of generally using roughly has two kinds of metal casting method (Die Casting) and lost wax casting methods (Investment Casting).In principle, the mold of metal casting method is made by metallic substance, and there is easy control casting of appearance of cast precision and mold can supply reusable characteristic, but can not be higher than the restriction of mold fusing point for fear of the fusing point of foundry goods raw material, it can also be subject to more restriction relatively for the foundry goods raw material of application.
As for, the similar traditional sand casting method of lost wax casting rule, equally can resistant to elevated temperatures mud, sand is as molding material, therefore can be widely used in the foundry goods of raw material fusing point, lost wax casting is different from traditional sand casting part and is, lost wax casting is low with fusing point, the wax of handling ease is as model, after wax stone preformed is formed in to the wax-pattern conforming to foundry goods external form, again to spray or to soak the mode of shell mould slurries, in the outside coated shell mould of wax-pattern, after the really dry sclerosis of shell mould, with type of heating, by the wax-pattern in shell mould, melt out, make to vacate the die cavity conforming to foundry goods external form in shell mould, again the foundry goods raw material of melting is inserted in die cavity, after foundry goods raw material cooling and shaping, can obtain the foundry goods identical with wax-pattern shape, and adopt directly shell mould is the shatter or mode broken into pieces, to originally by the coated foundry goods of shell mould, be taken out.
How the shell mold materials of above-mentioned lost wax casting method is formed by mullite and silicic acid glue mixed hardening, mainly utilizes the fire-resistance property of mullite, allows shell mould be reached higher thermal stability, and allows casting finished product obtain preferably surface accuracy; Can be for being widely used in various fields although mullite is held its splendid fire-resistance property under the arm, the performance of mullite and its purity are closely related, and purity is higher, and the performance of product is also better.The mullite that adopts raw mineral materials to produce, because the harmful element content such as iron, titanium, calcium, magnesium in most of raw mineral materialss are high, quality product can not guarantee, must see through suitable sintering process and electric smelting again and process, the high mullite of synthesis of high purity, increases the manufacturing cost of mullite relatively.
Above-mentioned lost wax casting is in the process that foundry goods is taken out, its shell mould is because of shatter or break into pieces and cannot reuse, although in the middle of the residual body of useless shell mould of these breakages, be still mixed with many structural integrities mullite, but because be coated by a large amount of silicic acid glue or stick together and be treated as offal treatment, not only cannot reduce the tooling cost of lost wax casting, the resource that excess waste can be used more virtually.
Summary of the invention
In view of this, the present invention is providing a kind of mullite particle that can take out in the useless shell mould that contains mullite particle for the mullite recovery method of recycling, and relative recovery system.
For reaching above-mentioned purpose, mullite recovery method of the present invention sequentially comprises the following steps: that a. obtains the useless shell mould that contains mullite particle; B. useless shell mould is ground into the shell mould fragment of predetermined size; C. shell mould fragment is imposed the External Force Acting of preassigned pattern, the glue-line that is attached to mullite particle surface is peeled off, make to obtain the mix products that is mixed with mullite particle and glue-line; D. to the processing of sieving of above-mentioned mix products, the mullite particle in the middle of mix products is separated out, can reach the object that mullite particle is reclaimed.
Described mullite recovery method is in the process of External Force Acting that shell mould fragment is imposed to preassigned pattern, and operation in the environment that is controlled at predetermined moisture scope, avoids mullite particle and glue-line again to stick together.
Described mullite recovery method is dialled shell mould fragment the mode of getting rid of shell mould fragment is imposed to External Force Acting towards predetermined object.
Described mullite recovery method sprays shell mould fragment mode towards predetermined object imposes External Force Acting to shell mould fragment.
Described mullite recovery method rolls the mode of grinding in shell mould fragment with slated items shell mould fragment is imposed to External Force Acting.
Described mullite recovery method is placed in a container rolling together with shell mould fragment mode with slated items imposes External Force Acting to shell mould fragment.
Mullite recovery system of the present invention, substantially by a pulverizing unit, at least one unit of peeling off, and at least one screening unit forms; Wherein, this pulverizing unit is in order to be ground into the useless shell mould that contains mullite particle the shell mould fragment of predetermined size; This peels off unit in order to the shell mould fragment from pulverizing unit is imposed to the External Force Acting of preassigned pattern, and the glue-line that is attached to mullite particle surface is peeled off, and obtains the mix products that is mixed with mullite particle and glue-line; As for,, in order to the mix products from peeling off unit is imposed to the processing of sieving, separate out the mullite particle in the middle of mix products this screening unit.
Described mullite recovery system further include one with the humidity controlling unit of peeling off unit and being connected, this humidity controlling unit is in order to control the working relative humidity of peeling off unit.
The described unit of peeling off, imposes External Force Acting shell mould fragment is dialled to the mode of getting rid of towards predetermined object to shell mould fragment.
The described unit of peeling off, imposes External Force Acting in the mode that shell mould fragment is sprayed towards predetermined object to shell mould fragment.
The described unit of peeling off, rolls the mode of grinding in shell mould fragment with slated items shell mould fragment is imposed to External Force Acting.
The described unit of peeling off, the mode that is placed in a container rolling with slated items together with shell mould fragment imposes External Force Acting to shell mould fragment.
Described mullite recovery system, in a mode of peeling off unit collocation one screening unit, is from top to bottom sequentially provided with several layers and peels off unit and multiple layer screening unit, and the screen cloth size of mesh of respectively screening unit phases down from top to bottom.
Mullite recovery method of the present invention and system can produce following effect.
1. the mullite particle in the useless shell mould of cost recovery that can be cheap.
2. by the mullite particle recycling reclaiming in useless shell mould, significantly the expenditure of mullite is bought in reduction.
3. by the mullite particle recycling reclaiming in useless shell mould, avoid the resource of excess waste primary mineral.
4. through the residual body after Screening Treatment, because wherein main mullite particle is precipitated, therefore outstanding, be applicable to as ceramic raw material recycling.
Accompanying drawing explanation
Fig. 1 is mullite recovery method operation process chart of the present invention.
Fig. 2 is that the mullite recovery system of first embodiment of the invention forms structure block schematic diagram.
Fig. 3 is the combo architectures block schematic diagram of peeling off unit and screening unit of second embodiment of the invention.
Fig. 4 is that the mullite recovery system of third embodiment of the invention forms structure block schematic diagram.
Figure number explanation:
10 pulverizing units
20 peel off unit
30 unit that sieve
40 humidity controlling units.
Embodiment
The present invention can take out mullite for the mullite recovery method of recycling providing a kind of in useless shell mould, and relative recovery system; As shown in mullite recovery process figure as of the present invention in Fig. 1, mullite recovery method of the present invention, sequentially comprises the following steps substantially.
A. obtain the useless shell mould that contains mullite particle; When implementing, this useless shell mould can be taken from the useless shell mould left behind after the lost wax casting operation demoulding, and the mullite sand grains of the Mullite Powder that the composition of its useless shell mould comprises predetermined proportion, predetermined proportion, the mullite particle of predetermined proportion, and the silicic acid glue mutually sticking together in order to form Mullite Powder, mullite sand grains, mullite particle respectively, main purpose of the present invention is by the mullite particle recycling reclaiming in the middle of useless shell mould.
B. useless shell mould is ground into the shell mould fragment of predetermined size; When implementing, can useless shell mould be ground into the shell mould fragment of predetermined size by the mode blending, and take be crushed to do not destroy as far as possible mullite particle degree as good, make relatively to improve the rate of recovery of mullite particle.
C. shell mould fragment is imposed the External Force Acting of preassigned pattern, the glue-line that is attached to mullite particle surface is peeled off, make to obtain the mix products that is mixed with mullite particle and glue-line; When implementing, can operation in the environment that is controlled at predetermined moisture scope, shell mould fragment is imposed to the External Force Acting of preassigned pattern; In principle, in processing through high temperature sclerosis shaping, therefore the stickiness of not having, more easily allows glue-line from mullite particle sur-face peeling, and can avoid mullite particle and glue-line again to condense and stick together glue-line stickiness under drier environment.
D. to the processing of sieving of above-mentioned mix products, the mullite particle in the middle of mix products is separated out, can reach the object that mullite is reclaimed; When implementing, can select the screen cloth of suitable size of mesh that the mullite particle in the middle of mix products is screened according to mullite particle size; Certainly; via the mix products sieving after processing, also can repeat again after the step of above-mentioned b ~ c; in the process of processing that above-mentioned mix products is sieved, select the less screen cloth of size of mesh that less mullite particle or the mullite sand grains of size screened in the middle of mix products.
Moreover, the present invention is when implementing, shell mould fragment is being imposed to the External Force Acting of preassigned pattern, the glue-line that is attached to mullite particle surface is peeled off, make to obtain in the process of the mix products that is mixed with mullite particle and glue-line, can select to adopt shell mould fragment is dialled to the mode of getting rid of towards predetermined object, the mode that shell mould fragment is sprayed towards predetermined object, with slated items, roll the mode of grinding in shell mould fragment, or together with shell mould fragment, be placed in the mode of a container rolling with slated items, shell mould fragment is imposed to External Force Acting, due to the quality of silicic acid glue, relatively mullite is fragile, therefore when being subject to the External Force Acting of aforesaid way, can be from the even disintegration of mullite sur-face peeling, and then be processed into by originally sticking together mutually by silicic acid glue and mullite the shell mould fragment forming the mix products that is mixed with mullite particle and glue-line.
As for, mullite recovery system of the present invention, substantially as shown in Figure 2, by a pulverizing unit 10, at least onely peel off unit 20, and at least one screening unit 30 forms.
Wherein: this pulverizing unit 10 is in order to be ground into the useless shell mould that contains mullite particle the shell mould fragment of predetermined size; When implementing, this pulverizing unit 10 has two groups with the parallel rotary cutter arranged side by side of predetermined spacing, this rotary cutter also rotates relatively with the rotating speed of being scheduled to, and allows useless shell mould by the mode of two groups of rotary cutters, by rotary cutter, useless shell mould is ground into the shell mould fragment of predetermined size.
This peels off unit 20 in order to the shell mould fragment from pulverizing unit 10 is imposed to the External Force Acting of preassigned pattern, and the glue-line that is attached to mullite particle surface is peeled off, and obtains the mix products that is mixed with mullite particle and glue-line; When implementing, this is peeled off unit 20 and can select to see through shell mould fragment is dialled towards predetermined object and get rid of, shell mould fragment is sprayed, with slated items, rolls and grind in shell mould fragment towards predetermined object, or the mode that is placed in a container rolling with slated items together with shell mould fragment imposes External Force Acting to shell mould fragment.
As for,, in order to the mix products from peeling off unit 20 is imposed to the processing of sieving, separate out the mullite particle in the middle of mix products this screening unit 30; When implementing, whole mullite recovery system can be as shown in Figure 3, with one, peel off the mode that unit 30 are screened in unit 20 collocation one, from top to bottom sequentially be provided with several layers and peel off unit 20 and multiple layer screening unit 30, and the screen cloth size of mesh of respectively screening unit 30 phases down from top to bottom, make the object the mullite particle reaching reclaiming is classified in same equipment configuration place, and can economize the cost that builds of decorrelation e Foerderanlage, and shipping time, and then the recovery production capacity of lifting mullite.
It is worth mentioning that, mullite recovery system of the present invention can be as shown in Figure 4, further include one with the humidity controlling unit 40 of peeling off unit 20 and being connected, this humidity controlling unit 40 is in order to control shell mould fragment in the operation of predetermined moisture scope, especially, it is best effort humidity that this humidity controlling unit 40 can be controlled at 0～2 ﹪ by the humidity of this shell mould fragment, so that drying back cover mould fragment is in peeling off unit 20 operations, impose the external force of preassigned pattern to the effect of shell mould fragment, allow glue-line more easily from mullite particle sur-face peeling, and can avoid mullite particle and glue-line again to condense and stick together.
Particularly, the present invention can see through the mullite particle in the useless shell mould of cheap cost recovery, and by the mullite particle recycling reclaiming in useless shell mould, significantly the expenditure of mullite is bought in reduction, and by the mullite particle recycling reclaiming in useless shell mould, avoid the resource of excess waste primary mineral; Especially, through the residual body after Screening Treatment, because wherein main mullite particle is precipitated, therefore outstanding, be applicable to as ceramic raw material recycling.
Claims (10)
1. a mullite recovery method, is characterized in that, sequentially comprises the following steps:
A. obtain the useless shell mould that contains mullite particle;
B. useless shell mould is ground into the shell mould fragment of predetermined size;
C. shell mould fragment is imposed the External Force Acting of preassigned pattern, the glue-line that is attached to mullite particle surface is peeled off, make to obtain the mix products that is mixed with mullite particle and glue-line;
D. to the processing of sieving of above-mentioned mix products, the mullite particle in the middle of mix products is separated out.
2. mullite recovery method as claimed in claim 1, is characterized in that, shell mould fragment is imposed in the process of External Force Acting of preassigned pattern operation in the environment that is controlled at predetermined moisture scope.
3. mullite recovery method as claimed in claim 1 or 2, is characterized in that, shell mould fragment is dialled to the mode of getting rid of or spraying towards predetermined object shell mould fragment is imposed to External Force Acting.
4. mullite recovery method as claimed in claim 1 or 2, is characterized in that, rolls the mode of grinding in shell mould fragment shell mould fragment is imposed to External Force Acting with slated items.
5. mullite recovery method as claimed in claim 1 or 2, is characterized in that, the mode that is placed in a container rolling with slated items together with shell mould fragment imposes External Force Acting to shell mould fragment.
6. a mullite recovery system, is characterized in that, by a pulverizing unit, at least one unit of peeling off, and at least one screening unit forms; Wherein:
This pulverizing unit is in order to be ground into the useless shell mould that contains mullite particle the shell mould fragment of predetermined size;
Respectively peel off unit in order to the shell mould fragment from pulverizing unit is imposed to the External Force Acting of preassigned pattern, the glue-line that is attached to mullite particle surface is peeled off, obtain the mix products that is mixed with mullite particle and glue-line;
Each screens unit in order to the mix products from peeling off unit is imposed to the processing of sieving, and the mullite particle in the middle of mix products is separated out.
7. mullite recovery system as claimed in claim 6, is characterized in that, this mullite recovery system further include one with the humidity controlling unit of peeling off unit and being connected, this humidity controlling unit is in order to control the working relative humidity of peeling off unit.
8. the mullite recovery system as described in claim 6 or 7, is characterized in that, this peels off unit, shell mould fragment is dialled to the mode of getting rid of or spraying towards predetermined object, shell mould fragment is imposed to External Force Acting.
9. the mullite recovery system as described in claim 6 or 7, it is characterized in that, this is peeled off unit and with slated items, rolls the mode of grinding in shell mould fragment shell mould fragment is imposed to External Force Acting, or this is peeled off unit is placed in a container rolling together with shell mould fragment mode with slated items shell mould fragment is imposed to External Force Acting.
10. the mullite recovery system as described in claim 6 or 7, it is characterized in that, this mullite recovery system peels off with one the mode that unit is screened in unit collocation unification, from top to bottom sequentially be provided with several layers and peel off unit and a multiple layer screening unit, and the screen cloth size of mesh of respectively screening unit phases down from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315045.9A CN103664198A (en) | 2012-08-30 | 2012-08-30 | Mullite recycling method and mullite recycling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315045.9A CN103664198A (en) | 2012-08-30 | 2012-08-30 | Mullite recycling method and mullite recycling system |
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| CN103664198A true CN103664198A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210315045.9A Pending CN103664198A (en) | 2012-08-30 | 2012-08-30 | Mullite recycling method and mullite recycling system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381100A (en) * | 2008-10-10 | 2009-03-11 | 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 |
| CN101801561A (en) * | 2007-09-12 | 2010-08-11 | 花王株式会社 | Method for production of regenerated foundry sand |
| CN202162331U (en) * | 2011-07-27 | 2012-03-14 | 安徽省宁国新宁实业有限公司 | Old cast sand recovery and processing equipment |
| CN102632192A (en) * | 2011-03-23 | 2012-08-15 | 如皋市大生线路器材有限公司 | Investment casting shell breaking and classified-screening method |
-
2012
- 2012-08-30 CN CN201210315045.9A patent/CN103664198A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101801561A (en) * | 2007-09-12 | 2010-08-11 | 花王株式会社 | Method for production of regenerated foundry sand |
| CN101381100A (en) * | 2008-10-10 | 2009-03-11 | 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 |
| CN102632192A (en) * | 2011-03-23 | 2012-08-15 | 如皋市大生线路器材有限公司 | Investment casting shell breaking and classified-screening method |
| CN202162331U (en) * | 2011-07-27 | 2012-03-14 | 安徽省宁国新宁实业有限公司 | Old cast sand recovery and processing equipment |
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Application publication date: 20140326 |