KR20170096705A - Apparatus for recycling moulding sand - Google Patents
Apparatus for recycling moulding sand Download PDFInfo
- Publication number
- KR20170096705A KR20170096705A KR1020160018261A KR20160018261A KR20170096705A KR 20170096705 A KR20170096705 A KR 20170096705A KR 1020160018261 A KR1020160018261 A KR 1020160018261A KR 20160018261 A KR20160018261 A KR 20160018261A KR 20170096705 A KR20170096705 A KR 20170096705A
- Authority
- KR
- South Korea
- Prior art keywords
- rotary
- firing unit
- waste
- firing
- dryer
- Prior art date
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Classifications
-
- 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
-
- 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
-
- 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
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
-
- 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
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/02—Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
The present invention relates to a firing machine used in the process of pyrolyzing and removing impurities in a waste grinding machine. In particular, the firing machines are stacked along the vertical direction to maximize the space utilization, and the firing machines are rotated to improve the pyrolysis efficiency The present invention relates to a recycling apparatus for a waste chrysanthemum.
In general, molding sand is used as a molding material in the process of casting a molding having a complicated structure such as an engine or a screw. Such molding sand is manufactured by mixing resin or binder with silica sand subjected to drying and heat treatment, If the lifetime is reached, it is discarded.
However, in spite of being a material containing a large amount of dust, synthetic resin, iron powder, carbonized sludge and heavy metal which cause environmental pollution, the waste paper is subject to disposal of about 90% or more by simple landfilling. In particular, Considering the fact that it is dependent on imports, there is an urgent need for research on the prevention of environmental pollution sources as well as for regeneration considering import substitution effects.
Since the wet process includes disadvantages of generating wastewater in the process of removing impurities, the wet process may be performed by a dry method using a friction method or a polishing method, a dry method using a liquid type or a rotary Various sintering methods using equations are under study.
For example, as a method of firing the waste chestnut, a waste chopper that is crushed to a predetermined size by a crusher and passed through a separator is charged into a pyrolysis furnace, and then the casting pyrolyzed by the pyrolysis furnace is cooled using a chiller, An apparatus for collecting dust by using the apparatus has been developed.
However, since the method of firing the waste chestnut is a method of discharging hot air or heat generated by the pyrolysis furnace as it is, the energy efficiency of the waste chrysanthemum is regenerated, and the cooling is forced by the cooler, There is a problem that waste of the battery is generated.
In addition, many heat source recycling apparatuses have been developed for recycling heat generated by the thermal decomposition furnace, for example, in the process of sintering the waste maggot. However, most of these apparatuses have insufficient recovery and reuse of heat energy, Research on the device that increases the efficiency is urgent.
In addition, although a method of disposing a plurality of the pyrolysis furnaces in the firing process of the waste chimney yarn is applied, for example, a space occupied by the pyrolysis furnaces is required to increase the installation cost and the operation cost. In addition, There is a problem that heat loss occurs.
[references]
* Registration Patent No. 10-1246745 (Registered on March 31, 2013)
* Registered Patent Publication No. 10-1064052 (Registered on September 2, 2011.)
* Registration Utility Model Bulletin No. 20-0260693 (Registered Date: Jan. 12, 2002)
Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to maximize the space utilization by constructing the firing units in a stacking manner along the vertical direction and to improve the thermal diffusing efficiency And it is an object of the present invention to provide a recycling apparatus for a waste chrysanthemum.
According to an aspect of the present invention, A crusher for crushing the waste sand, a de-ironing machine for removing the iron powder of the waste sand crushed by the crusher, a rotary dryer for heating and drying the crushed material passed through the de-ironing machine, A rotary type first firing unit for pyrolyzing impurities by heating the dried material dried by the dryer; A rotary second firing unit for heating and re-pyrolyzing the fired product pyrolyzed by the first firing unit; And a rotary cooler for receiving and cooling the fired product in which the impurities are pyrolyzed by the second firing unit; The dryer, the first firing unit, the second firing unit, and the cooler are sequentially connected to each other along the vertical direction through respective conveyors.
As described above, the present invention includes at least the following effects.
First, by arranging the firing units in a stacked manner in the vertical direction through the respective conveyors, it is possible to obtain a maximum yield in the minimum space by maximizing space utilization due to firing of the waste chrysanthemum.
Secondly, in the regeneration process of the waste chrysanthemum, a multistage calcination cycle is constructed to continuously perform drying, pyrolysis and cooling, thereby improving the yield of recycling of the waste chrysanthemum as well as recycling waste heat, which is very economical.
Thirdly, since the burner is multi-stage and rotatable, the heat is evenly injected during the sintering of the waste maggot, so that the oxidation of the impurities is smoothly performed, thereby improving the reliability of the regeneration operation.
Fourthly, by constituting the firing units in a multi-stage and selectively controlling the firing temperature and the firing time, the waste grinding wares are not damaged during the firing process, and the yield is improved and contamination such as odor is not generated.
FIG. 1 is a conceptual view showing a recycling apparatus for a waste sand in accordance with the present invention,
2 is a flow chart showing a recycling apparatus for a waste sand in accordance with the present invention.
Hereinafter, an embodiment according to the present invention will be described.
1 and 2, the present invention comprises a
Here, the
The
The
At this time, it is preferable that the
The
At this time, the conveyors 12-2 and 12-4 perform a function of lowering or elevating the waste paper, and thus the bucket conveyor is preferable.
The
The
Of course, since the
At this time, it is preferable that the dryer (30) is formed as a rotary kiln so that the waste maggot
The reason for setting the drying temperature and the drying time of the above-mentioned waste chrysanthemum is that the drying time is long and the yield is lowered at below 250 DEG C and less than 25 minutes. Because.
In addition, it is preferable to configure the
Of course, the conveyor 36 is preferably a screw conveyor in consideration of thermal damage of the waste paper.
The
Particularly, it is preferable that the
At this time, the reason why the drying temperature and the drying time of the waste maggot are set is that the drying time is long and the yield is lowered at a temperature of less than 300 DEG C and less than 25 minutes, and energy is more than 600 DEG C and more than 35 minutes to be.
The
The reason for setting the pyrolysis temperature and the pyrolysis time of the waste maggot is that the pyrolysis is too slow and the yield is lowered and the energy efficiency is lowered at 600 ° C or more and for 35 minutes or more.
Of course, it is preferable that the
The
Particularly, it is preferable that the
The
The reason for setting the drying temperature and the drying time of the
At this time, the pyrolysis temperature and the pyrolysis time of the waste chrysanthemum are set because the pyrolysis is too slow to lower the yield, and the energy efficiency decreases more than 900 ° C and 35 minutes or more.
Of course, the
The cooler 60 is a device for receiving and cooling a product that is pyrolyzed by the
In addition, the
Of course, the
Hereinafter, the operation according to the present invention will be described.
First, when the waste chopper delivered by the
In this way, the waste charcoal dried by the
At this time, since the
Further, since the
In addition, since the
Particularly, by appropriately adjusting the temperatures of the
Description of the Related Art [0002]
10: crusher 12: hopper
14, 16: Crusher 18: Screen
20: deaerator 30: dryer
32: Conveyor 34: Surgeon
40: First burner 42: Burner
44: Heat exchanger 46: Conveyor
50: second burner 52: burner
54: heat exchanger 56: conveyor
60: cooler 62: cooler
64: blower 70: storage tank
72: Conveyor 80: Feeder
Claims (6)
A deaerator (20) for removing the iron powder of the crushed waste paper crushed by the crusher (10);
A rotary dryer 30 for heating and drying the crushed material passed through the de-ironing machine 20;
A rotary type first firing unit (40) for heating the dried material dried by the dryer (30) to pyrolyze impurities;
A rotary second firing unit 50 for heating and re-pyrolyzing the fired product pyrolyzed by the first firing unit 40; And
A rotary cooler 60 for receiving and cooling the fired product in which the impurities are thermally decomposed by the second firing unit 50;
/ RTI >
The dryer 30, the first firing unit 40, the second firing unit 50, and the cooler 60 are interconnected along the vertical direction through respective conveyors 46, 56, 66, Wherein the waste water recycling apparatus is disposed in the waste water recycling system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020160018261A KR101853330B1 (en) | 2016-02-17 | 2016-02-17 | Apparatus for recycling moulding sand |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160018261A KR101853330B1 (en) | 2016-02-17 | 2016-02-17 | Apparatus for recycling moulding sand |
Publications (2)
Publication Number | Publication Date |
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KR20170096705A true KR20170096705A (en) | 2017-08-25 |
KR101853330B1 KR101853330B1 (en) | 2018-05-02 |
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KR1020160018261A KR101853330B1 (en) | 2016-02-17 | 2016-02-17 | Apparatus for recycling moulding sand |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109128026A (en) * | 2018-10-11 | 2019-01-04 | 嵊州市华明机械铸造股份有限公司 | A kind of method of iron ball casting |
KR20230087199A (en) | 2021-12-09 | 2023-06-16 | 안하영 | Composition For Treatment or improving condition of aphthous stomatitis,cancer therapy-induced oral mucositis |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100941027B1 (en) * | 2009-03-24 | 2010-02-05 | 한국지질자원연구원 | The regenerating method of scrap casting sand |
-
2016
- 2016-02-17 KR KR1020160018261A patent/KR101853330B1/en active IP Right Grant
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109128026A (en) * | 2018-10-11 | 2019-01-04 | 嵊州市华明机械铸造股份有限公司 | A kind of method of iron ball casting |
KR20230087199A (en) | 2021-12-09 | 2023-06-16 | 안하영 | Composition For Treatment or improving condition of aphthous stomatitis,cancer therapy-induced oral mucositis |
Also Published As
Publication number | Publication date |
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KR101853330B1 (en) | 2018-05-02 |
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