CN103317084B - A kind of method using antiquated sand recycling equipment to manufacture precoated sand - Google Patents
A kind of method using antiquated sand recycling equipment to manufacture precoated sand Download PDFInfo
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- CN103317084B CN103317084B CN201310273058.9A CN201310273058A CN103317084B CN 103317084 B CN103317084 B CN 103317084B CN 201310273058 A CN201310273058 A CN 201310273058A CN 103317084 B CN103317084 B CN 103317084B
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Abstract
The present invention relates to a kind of using method of antiquated sand recycling equipment, comprise following step: a, antiquated sand add vibrating crushing screening machine and be broken into granule, enter old sand elevator and be delivered to magnetic separator, removing iron charge; Antiquated sand after b, preheating enters hot-method regeneration device and fires; Sand after c, high-temperature firing enters vibratory sieve after cooling bed cooling, then obtains reclaimed sand after fresh sand elevator; D, prepare material according to the following formulation: methenamine solution 1.6 ~ 1.7kg, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg; E, above-mentioned material is sequentially added into stirred tank stirs, obtain precoated sand.The invention has the beneficial effects as follows: simple to operate, old sand recovery utilization rate is high, is easy to promote.
Description
Technical field
The present invention relates to a kind of method using antiquated sand recycling equipment to manufacture precoated sand.
Background technology
China is a big country in foundry, along with the high speed development of national economy, has reached 3,530 ten thousand tons, occupy the umber one of World Casting output to China's foundry goods annual production in 2009.China is again the consumption big country of a Modeling Material, because more than 80% foundry goods is from sand casting, because placer iron during China's moulding is larger, in general, often produce 1 ton of castings and can produce about 1.2 ~ 1.4 tons of antiquated sands, the cast waste sand of annual discharge can reach more than 3,000 ten thousand tons.So a large amount of discharge cast waste sands, will occupy a lot of antiquated sand place.Along with the extensive use of the various organic and inorganic binding agent of China, the harmful components contained in antiquated sand are caused to get more and more, such as, in the antiquated sand of organic resin binding agent residual aldehyde, phenol, benzene, potassium, isocyanide, sulfide etc., the composition that alkali, phenol etc. residual in inorganic binder antiquated sand are harmful.Antiquated sand containing this kind of harmful components, through rain erosion after discharge, its harmful components will pollute rivers and lakes, even pollute life water source.Especially the composition such as isocyanide, phenols contained in the strong basicity of water-glass sand and resin sand, the public hazards caused are even more serious.In recent years, along with the continuous enhancing of people's environmental consciousness, the increasing of Environmental protection law enforcement dynamics, the increase of charges for disposing pollutants, all forces Foundry Works to carry out regeneration to old sand.
Summary of the invention
The technical problem to be solved in the present invention is: based on the problems referred to above, the invention provides a kind of using method of antiquated sand recycling equipment.
The present invention solves the technical scheme that its technical problem adopts: a kind of antiquated sand recycling equipment, comprises the vibrating crushing screening machine, old sand elevator, magnetic separator, hot-method regeneration device, cooling bed, vibratory sieve and the fresh sand elevator that are connected successively.
Further, bucket, screw(-type) feeder in the middle of old sand is provided with between magnetic separator, hot-method regeneration device successively.
Further, hot-method regeneration device comprises sand preheater, air preheater and roaster, and sand preheater, air preheater are connected with roaster respectively, and sand preheater is connected with screw(-type) feeder, roaster is connected with cooling bed, and roaster is also connected with gas generator.
The using method of antiquated sand recycling equipment, comprises following step:
A, antiquated sand add vibrating crushing screening machine and are broken into granule, enter old sand elevator and are delivered to magnetic separator, removing iron charge, and bucket, screw(-type) feeder in the middle of old sand, deliver to sand preheater by the antiquated sand removing iron charge;
In b, air preheater, the air of preheating enters roaster, and the antiquated sand after preheating enters roaster high-temperature firing, and furnace temperature is 600 ~ 800 DEG C;
Sand after c, high-temperature firing enters vibratory sieve after cooling bed cooling, then obtains reclaimed sand after fresh sand elevator;
D, according to the following formulation, prepares material:
Methenamine solution (methenamine: water=1:3) 1.6 ~ 1.7kg, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg;
E, heating stirred tank to 100 ~ 200 DEG C, be sequentially added into above-mentioned material in stirred tank and stir, obtain precoated sand.
The invention has the beneficial effects as follows: simple to operate, old sand recovery utilization rate is high, is easy to promote.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is structural representation of the present invention.
Wherein: 1. vibrating crushing screening machine, 2. old sand elevator, 3. magnetic separator, 4. bucket in the middle of old sand, 5. screw(-type) feeder, 6. hot-method regeneration device, 7. cooling bed, 8. vibratory sieve, 9. fresh sand elevator.
Detailed description of the invention
The invention will be further described in conjunction with specific embodiments now, and following examples are intended to the present invention instead of limitation of the invention further are described.
A kind of antiquated sand recycling equipment as shown in Figure 1, comprises the vibrating crushing screening machine 1, old sand elevator 2, magnetic separator 3, hot-method regeneration device 6, cooling bed 7, vibratory sieve 8 and the fresh sand elevator 9 that are connected successively.
Bucket 4, screw(-type) feeder 5 in the middle of old sand is provided with successively between magnetic separator 3, hot-method regeneration device 6.
Hot-method regeneration device 6 comprises sand preheater, air preheater and roaster, and sand preheater, air preheater are connected with roaster respectively, and sand preheater is connected with screw(-type) feeder 5, and roaster is connected with cooling bed 7, and roaster is also connected with gas generator.
The using method of antiquated sand recycling equipment, comprises following step:
A, antiquated sand add vibrating crushing screening machine 1 and are broken into granule, enter old sand elevator 2 and are delivered to magnetic separator 3, removing iron charge, and bucket 4, screw(-type) feeder 5 in the middle of old sand, deliver to sand preheater by the antiquated sand removing iron charge;
In b, air preheater, the air of preheating enters roaster, and the antiquated sand after preheating enters roaster high-temperature firing, and furnace temperature is 600 ~ 800 DEG C;
Sand after c, high-temperature firing enters vibratory sieve 8 after cooling bed 7 coolings, then obtains reclaimed sand after fresh sand elevator 9;
D, according to the following formulation, prepares material:
Methenamine solution (methenamine: water=1:3) 1.6 ~ 1.7kg, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg;
E, heating stirred tank to 100 ~ 200 DEG C, be sequentially added into above-mentioned material in stirred tank and stir, obtain precoated sand.
Embodiment 1:
Methenamine solution (methenamine: water=1:3) 1.6kg, phenolic resins 2.7kg, calcium stearate 100g, silane 60g, all the other are reclaimed sand, and total amount is 150kg.
The rate of recovery of the antiquated sand obtained according to above-mentioned using method is 85%.
Embodiment 2:
Methenamine solution (methenamine: water=1:3) 1.7kg, phenolic resins 2.8kg, calcium stearate 300g, silane 100g, all the other are reclaimed sand, and total amount is 150kg.
The rate of recovery of the antiquated sand obtained according to above-mentioned using method is 90%.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to right.
Claims (1)
1. use antiquated sand recycling equipment to manufacture a method for precoated sand, comprise following step:
A, antiquated sand add vibrating crushing screening machine and are broken into granule, enter old sand elevator and are delivered to magnetic separator, removing iron charge, and bucket, screw(-type) feeder in the middle of old sand, deliver to sand preheater by the antiquated sand removing iron charge;
In b, air preheater, the air of preheating enters roaster, and the antiquated sand after preheating enters roaster high-temperature firing, and furnace temperature is 600 ~ 800 DEG C;
Sand after c, high-temperature firing enters vibratory sieve after cooling bed cooling, then obtains reclaimed sand after fresh sand elevator;
D, according to the following formulation, prepares material:
Methenamine solution 1.6 ~ 1.7kg, wherein, methenamine: water=1:3, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg;
E, heating stirred tank to 100 ~ 200 DEG C, be sequentially added into above-mentioned material in stirred tank and stir, obtain precoated sand.
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| CN201310273058.9A CN103317084B (en) | 2013-06-28 | 2013-06-28 | A kind of method using antiquated sand recycling equipment to manufacture precoated sand |
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| CN201310273058.9A CN103317084B (en) | 2013-06-28 | 2013-06-28 | A kind of method using antiquated sand recycling equipment to manufacture precoated sand |
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| CN103317084A CN103317084A (en) | 2013-09-25 |
| CN103317084B true CN103317084B (en) | 2015-08-26 |
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| CN104162630B (en) * | 2014-09-05 | 2017-03-15 | 甘肃永靖昌盛铸钢有限责任公司 | A kind of recycling method of casting discarded molding sand |
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| CN110935842A (en) * | 2019-10-18 | 2020-03-31 | 贵阳白云合金熔铸厂 | Precoated sand hot rubbing regeneration method and system |
| CN110756727A (en) * | 2019-11-15 | 2020-02-07 | 贵阳白云合金熔铸厂 | Tectorial membrane molding sand regeneration process and system |
| CN112719209A (en) * | 2020-12-24 | 2021-04-30 | 安徽永恒泰环保科技有限公司 | Processing method for recycling resin sand |
| CN113145792A (en) * | 2021-04-29 | 2021-07-23 | 厦门金鑫晶造型材料有限公司 | Preparation process applied to environment-friendly precoated sand of hollow camshaft |
| CN114130948A (en) * | 2021-12-02 | 2022-03-04 | 南通美莱达科技有限公司 | Method for recycling waste ceramsite sand |
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Owner name: CHANGZHOU WEIYI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHANGZHOU WUYANG DIESEL ENGINE WATER TANK MANUFACTURING CO., LTD. Effective date: 20150803 |
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Inventor after: Wang Tianyi Inventor before: Xu Jun |
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Effective date of registration: 20150803 Address after: 213159 Hutang, Jiangsu, Wujin District, the town of Yan Zheng Road, No. 28, No. Applicant after: Changzhou Weiyi Technology Co., Ltd. Address before: 213234, Jiangsu City, Changzhou province Jintan city refers to the former town of Hebei village Hing North Road Applicant before: Changzhou Wuyang Diesel Engine Radiator Manufacturing Co., Ltd. |
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Effective date of registration: 20161014 Address after: North Park Hill Road 214500 Jingjiang city in Jiangsu province Taizhou City No. 18 Patentee after: JINGJIANG WEIYI INTELLECTUAL PROPERTY SERVICE CO., LTD. Address before: 213159 Hutang, Jiangsu, Wujin District, the town of Yan Zheng Road, No. 28, No. Patentee before: Changzhou Weiyi Technology Co., Ltd. |
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Effective date of registration: 20200420 Address after: 453700 yard of cotton processing plant, Langgongmiao Town, Xinxiang City, Henan Province Patentee after: Jinfeng (Xinxiang) silica sand Co., Ltd Address before: North Park Hill Road 214500 Jingjiang city in Jiangsu province Taizhou City No. 18 Patentee before: JINGJIANG WEIYI INTELLECTUAL PROPERTY SERVICE Co.,Ltd. |