CN102503530B - Manufacturing method for waste industrial molding sand dust ceramsite - Google Patents
Manufacturing method for waste industrial molding sand dust ceramsite Download PDFInfo
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- CN102503530B CN102503530B CN 201110314495 CN201110314495A CN102503530B CN 102503530 B CN102503530 B CN 102503530B CN 201110314495 CN201110314495 CN 201110314495 CN 201110314495 A CN201110314495 A CN 201110314495A CN 102503530 B CN102503530 B CN 102503530B
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- molding sand
- sand dust
- industrial molding
- dust
- sintering
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Abstract
The invention relates to a manufacturing method for waste industrial molding sand dust ceramsite. The manufacturing method comprises material proportioning and manufacturing process flow, wherein the material proportioning is as follows: 90-92% of waste industrial molding sand dust and 8-10% of coal powder; and the process flow is as follows: respectively measuring the waste industrial molding sand dust and the coal powder; after conveying the waste industrial molding sand dust and the coal powder to a stirring machine, drily stirring for about 2 min, adding 1/2 water, and wetly stirring for 1 min; conveying the stirred wet powder into a ball pelletizing disk, and adding water to form a ball; placing the ceramsite raw material ball in a static continuous sintering kiln for calcination; preheating, sintering and cooling; and discharging from the kiln, cooling, smashing and separating to obtain the waste industrial molding sand dust ceramsite as a finished product. The waste industrial molding sand dust ceramsite has the advantages of high utilization rate and high strength.
Description
Technical field
The present invention relates to building materials manufacturing technology field, is a kind ofly to utilize the discarded industrial molding sand dust in the industrial residue to be main raw material(s) specifically, and coal dust is less important starting material, makes the method for discarded industrial molding sand dust haydite.
Background technology
Nineteen fifties, Britain utilizes industrial residue---flyash the earliest in the world, produces lytag.China has built up two production lines of sintering flyash ceramic grain in Tianjin silicate product factory and Lanzhou in 1964, reached the production climax the seventies and eighties, and the back is because of multiple reasons such as twice power consumption, environmental protection, the economic benefit state that seizes up.Started the climax of total utilization of PCA again up to the nineties.China is a big coal country, is again coal fired power generation big country, and the ratio of fire coal such as every profession and trade and northern area warming, central heating is also very big.A large amount of flyash of generation such as coal fired power generation, Industrial Boiler have taken a large amount of soils, river course, mountain valley and coastal beach, serious contaminate environment when stacking.How to suit measures to local conditions, fully utilize flyash and caused the great attention of country, proposed the STRATEGIES OF SUSTAINABLE DEVELOPMENT policy, therefore, lytag is as utilizing one of main path of flyash, technology comparative maturity.
Since the reform and opening-up, the foundary industry of China has had the development of great-leap-forward, the big-and-middle-sized foundry enterprise of national hundreds of families, the discarded industrial molding sand of annual discharging has up to ten million tons, most of enterprises all the mode of landfill handle, not only occupied tract, also polluted environment.So the enterprise that has carries out recycling treatment to it, through operations such as magnetic separation, sorting, oven dry, screening and dust removal process, make it reach the purpose of recycling economy, but, how the discarded industrial molding sand dust that obtains in dust removal process is utilized but is a difficult problem, and domestic almost is a blank in this respect.
The present invention attempts to mix a certain proportion of coal dust based on discarded industrial molding sand dust, (or using higher flyash inferior of loss on ignition or colliery powder to substitute coal dust), need not any binding agent, produce discarded industrial molding sand dust haydite, reach the purpose of recycling economy, sharp useless, environmental protection, energy-conservation.
Summary of the invention
The objective of the invention is to: overcome the obvious technological deficiency that exists in the discarded industrial molding sand recycle, that is: discarded industrial molding sand dust does not still utilize.The method of a kind of science of selecting materials, reasonable ratio, discarded industrial molding sand dust haydite that discarded industrial molding sand dust volume is high is provided for this reason.
Technical scheme of the present invention is achieved in that a kind of manufacture method of discarded industrial molding sand dust haydite, comprises two aspects, first material and proportioning, and it two is technological process of productions.
The manufacture method of a kind of discarded industrial molding sand dust haydite of the present invention comprises discarded industrial molding sand dust, coal dust; Discarded industrial molding sand dust has the chemical ingredients and the physicals of independent formation haydite, but produce haydite, then need internal combustion coal dust (also can use colliery powder to replace coal dust or the higher flyash inferior of a certain amount of loss on ignition of admixture to replace coal dust in the place that coal gangue is arranged).
Weight proportion:
Copper mine tailing 90～92%;
Coal dust 8～10%;
Manufacturing process flow:
1. will discard industrial molding sand dust and send into filler bin;
2. will discard industrial molding sand dust and coal dust measures respectively;
3. two kinds of materials that will measure are thrown in the stirrer, and dried stir about is 2 minutes earlier,
After add 1/2 water, rewetting stir about 1 minute;
4. the wet mixing after will stirring is closed powder and is sent in the pan-pelletizer, adds 1/2 water again, the rotation balling-up;
5. will discard industrial molding sand dust haydite raw material ball and insert roasting in the static continous way sintering oven, 1220 ℃～1350 ℃ of sintering temperatures, sintering time 2.0～2.6 hours, discarded industrial molding sand dust haydite raw material ball is in sintering oven, pass through preheating, sintering, three operation stages of cooling successively, below kiln internal cooling to 400 ℃;
6. kiln discharge, naturally cooling;
7. broken, screening are divided into discarded industrial molding sand dust haydite finished product and discarded industrial molding sand dust pottery sand finished product.
In addition, described manufacturing process can be finished automatically in discarded industrial molding sand dust haydite manufacturing line streamline operration; Described sintering oven is static continous way sintering kiln; Described coal dust, in the place that coal gangue is arranged, also available its replaces coal dust, plays sharp useless, energy-conservation; Described coal dust in the place that the higher flyash inferior of loss on ignition is arranged, also can replace coal dust with it.
Description of drawings
Fig. 1 is a manufacturing process flow diagram of the present invention
Embodiment
The material that the present invention makes discarded industrial molding sand dust haydite comprises discarded industrial molding sand dust, coal dust, and the technical scheme to invention is described further as follows in conjunction with the accompanying drawings:
Embodiment 1
Weight proportion: copper mine tailing 90%;
Coal dust 10%;
Manufacturing process flow:
1. will discard industrial molding sand dust and send into filler bin;
2. will discard industrial molding sand dust and coal dust measures respectively;
3. two kinds of materials that will measure are rendered in the stirrer, and earlier dried stir about is 2 minutes, after add 1/2 water, rewetting stir about 1 minute;
4. the wet mixing after will stirring is closed powder and is sent in the pan-pelletizer, adds 1/2 water again, the rotation balling-up;
5. will discard industrial molding sand dust haydite raw material ball and insert roasting in the static continous way sintering oven, 1220 ℃～1350 ℃ of sintering temperatures, sintering time 2.0～2.6 hours, discarded industrial molding sand dust haydite raw material ball is in sintering oven, pass through preheating, sintering, three operation stages of cooling successively, below kiln internal cooling to 400 ℃;
6. kiln discharge, naturally cooling;
7. broken, screening are divided into discarded industrial molding sand dust haydite finished product and discarded industrial molding sand dust pottery sand finished product.
Embodiment 2
Weight proportion: copper mine tailing 92%;
Coal dust 8%;
Manufacturing process flow:
1. will discard industrial molding sand dust and send into filler bin;
2. will discard industrial molding sand dust and coal dust measures respectively;
3. two kinds of materials that will measure are rendered in the stirrer, and earlier dried stir about is 2 minutes, after add 1/2 water, rewetting stir about 1 minute;
4. the wet mixing after will stirring is closed powder and is sent in the pan-pelletizer, adds 1/2 water again, the rotation balling-up;
5. will discard industrial molding sand dust haydite raw material ball and insert roasting in the static continous way sintering oven, 1220 ℃～1350 ℃ of sintering temperatures, sintering time 2.0～2.6 hours, discarded industrial molding sand dust haydite raw material ball is in sintering oven, pass through preheating, sintering, three operation stages of cooling successively, below kiln internal cooling to 400 ℃;
6. kiln discharge, naturally cooling;
7. broken, screening are divided into discarded industrial molding sand dust haydite finished product and discarded industrial molding sand dust pottery sand finished product.
Claims (1)
1. the manufacture method of discarded industrial molding sand dust haydite or pottery sand is characterized in that:
A) material therefor is made up of discarded industrial molding sand dust, coal dust, and its mixing ratio by weight is as follows: discarded industrial molding sand dust 90%～92%, coal dust 8%～10%;
B) manufacturing process flow is as follows:
1. will discard industrial molding sand dust and send into filler bin;
2. will discard industrial molding sand dust and coal dust measures respectively;
3. two kinds of materials that will measure are rendered in the stirrer, do earlier and stirred 2 minutes, after add 1/2 water, rewetting was stirred 1 minute;
4. the wet mixing after will stirring is closed powder and is sent in the pan-pelletizer, adds 1/2 water again, the rotation balling-up;
5. will discard industrial molding sand dust haydite raw material ball and insert roasting in the static continous way sintering oven, 1220 ℃～1350 ℃ of sintering temperatures, sintering time 2.0～2.6 hours, discarded industrial molding sand dust haydite raw material ball is in sintering oven, pass through preheating, sintering, three operation stages of cooling successively, below kiln internal cooling to 400 ℃;
6. kiln discharge, naturally cooling;
7. broken, screening are divided into discarded industrial molding sand dust haydite and discarded industrial molding sand dust pottery sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110314495 CN102503530B (en) | 2011-10-10 | 2011-10-10 | Manufacturing method for waste industrial molding sand dust ceramsite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110314495 CN102503530B (en) | 2011-10-10 | 2011-10-10 | Manufacturing method for waste industrial molding sand dust ceramsite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102503530A CN102503530A (en) | 2012-06-20 |
| CN102503530B true CN102503530B (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110314495 Expired - Fee Related CN102503530B (en) | 2011-10-10 | 2011-10-10 | Manufacturing method for waste industrial molding sand dust ceramsite |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775178B (en) * | 2012-08-08 | 2014-04-09 | 金立虎 | Aged garbage slag powder haydite and manufacturing method thereof |
| CN107324830B (en) * | 2017-07-14 | 2020-09-04 | 柳州市柳晶科技股份有限公司 | Light ceramsite prepared from casting waste sand and waste ash and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548401A (en) * | 2003-05-06 | 2004-11-24 | 杜铁章 | High-strength flyash haydite and its production process |
| CN101219888A (en) * | 2008-02-03 | 2008-07-16 | 大庆合创机械设备有限公司 | Method for producing coal ash porcelain granule |
| CN101372415A (en) * | 2008-09-27 | 2009-02-25 | 仇心金 | Haydite produced by reclaiming industrial sludge and manufacturing method thereof |
-
2011
- 2011-10-10 CN CN 201110314495 patent/CN102503530B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548401A (en) * | 2003-05-06 | 2004-11-24 | 杜铁章 | High-strength flyash haydite and its production process |
| CN101219888A (en) * | 2008-02-03 | 2008-07-16 | 大庆合创机械设备有限公司 | Method for producing coal ash porcelain granule |
| CN101372415A (en) * | 2008-09-27 | 2009-02-25 | 仇心金 | Haydite produced by reclaiming industrial sludge and manufacturing method thereof |
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| CN102503530A (en) | 2012-06-20 |
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Owner name: TSITSIHAR ZHONGQI BUILDING MATERIALS DEVELOPMENT C Free format text: FORMER OWNER: JIN LIHU Effective date: 20141121 |
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Free format text: CORRECT: ADDRESS; FROM: 071000 BAODING, HEBEI PROVINCE TO: 161002 QIQIHAR, HEILONGJIANG PROVINCE |
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Effective date of registration: 20141121 Address after: 161002 Qigihar City, Heilongjiang province Unicom Tiefeng District 78 New Century Avenue apartment room 3218 Patentee after: Qigihar Zhong Qi Building Materials Development Co., Ltd. Address before: 071000 No. two environmental protection road, North 981, Hebei, Baoding Patentee before: Jin Lihu |
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