CN105197977B - A kind of preparation method that β type phosphorus plaster of Paris is developed using microwave - Google Patents
A kind of preparation method that β type phosphorus plaster of Paris is developed using microwave Download PDFInfo
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- CN105197977B CN105197977B CN201510566853.6A CN201510566853A CN105197977B CN 105197977 B CN105197977 B CN 105197977B CN 201510566853 A CN201510566853 A CN 201510566853A CN 105197977 B CN105197977 B CN 105197977B
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- ardealite
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- paris
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- type phosphorus
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Abstract
The invention discloses a kind of preparation method that β type phosphorus plaster of Paris is developed using microwave, belong to novel gypsum field of material technology.The present invention utilizes Microwave Pretreatment ardealite waste material, in the environment of suitable temperature and time, is dehydrated ardealite and changes ardealite crystal-type shape, so as to obtain the β type phosphorus plaster of Paris of high intensity.Difference of the present invention from conventional method replaces traditional flotation preprocess method with microwave heating principle in ardealite preprocessing process.Thus obtain that intensity is higher, water resistance is strong, meet the β type phosphorus plaster of Paris of national standard.
Description
Technical field
The present invention relates to a kind of preparation method that β type phosphorus plaster of Paris is developed using microwave, belong to novel gypsum material skill
Art field.
Background technology
Tradition prepares the technology of β type phosphorus plaster of Paris, is not required to add substantial amounts of water in pretreatment stage, exactly needs
Manually carry out operation agent, so as to generation environment pollution, can not completely industrial production, increase cost of labor the problems such as.Present invention system
Reduce the usage amount of water during standby β type phosphorus plaster of Paris, can industrialize completely, phosphorus stone is added using microwave principle
The intensity of cream, reduce harm of the waste water after processing ardealite to environment and human body；Reduce processing ardealite during people
The cost of labor expense of work process part；The method that tradition prepares phosphorus plaster of Paris is changed, advantageously in industrial production.
The content of the invention
The present invention utilizes microwave treatment technology, reduces the content of organics in ardealite waste material, so as in ardealite material
High intensity β type phosphorus plaster of Paris is obtained after further drying and dehydrating, methods described specifically includes following steps：
（1）Ardealite is taken, is sieving through the sieve that sieve aperture is 0.15mm, collects the ardealite after screening in case using；
（2）Ardealite after screening is put into microwave container, the ardealite after screening is put into EG025LC7-NSH types
Microwave treatment is carried out in micro-wave oven；
（3）It is 1 by ardealite, water, citric acid weight ratio:0.667~0.333:0.003 ~ 0.0035 ratio is by after microwave
Ardealite, water, citric acid mixing；
（4）By step（3）The material stirring of middle mixing is allowed to uniform in more than 10min, then stands more than 30min；
（5）By step（4）In in the material that is stirred, add Ca (OH)2, more than 10min is stirred, stands more than 30min,
Measure pH value, repeat step（5）In above step, until material pH value scope between 7 ~ 10；
（6）By step（5）The middle material to have discharged is put into drying box material disc, it is desirable to material in disk thickness be 2cm ~
4cm；Material is put into and becomes hot blast thermostatic drying chamber（Model：101-4 types；Voltage 380v, power 9000w；Air blast power：
440w）With 145 DEG C of heating 3.5h, wherein the timing since reaching after 145 DEG C drying box；
（7）Take out step（6）Middle drying box heats the ardealite completed when placing its temperature and being reduced to 20 ~ 30 DEG C,
The sieve that sieve aperture is 0.15mm is sieving through, the ardealite after screening is collected, has just obtained β type phosphorus plaster of Paris.
The step（2）Middle microwave treatment ardealite, microwave output power 1000w, microwave time 30min.
The step（3）The average grain diameter of middle citric acid is 1 μm ~ 1mm, and composition and mass percent scope are：
C6H8O7·H2O：≤ 99.5%, remaining is impurity.
The step（1）In ardealite can use composition and mass percent scope for：SiO2:13.32%~15.12%
、Fe2O3:0.29%~0.36%、CaO:21.46%~25.3%、MgO:0.02%~0.035%、H2O:2.21%~2.73%、F:0.12%~
0.14%、P2O5:0.46%~0.62%、Al2O3:0.76%~0.96%、Cl:0.011%~0.013%、SO3：44.2%~44.6%.
The step（7）In obtained β type phosphorus plaster of Paris fineness be 100 ~ 150 mesh.
The step（7）In obtained β types phosphorus plaster of Paris composition and mass percent scope：
SiO2:11.72%~13.12%、Fe2O3:0.28%~0.32%、CaO:24.46%~26.45%、MgO:0.03%~
0.05%、H2O:2.21%~2.33%、F:0.05%~0.07%、P2O5:0.56%~0.62%、Al2O3:0.84%~0.96%、Cl:
0.017%~0.019%、SO3：46.96%~48.86%.
Beneficial effects of the present invention：The present invention utilizes microwave principle processing ardealite waste material so that drying box heats
The reaction of middle ardealite and situation of change are different from conventional method, and β type phosphorus plaster of Paris is prepared to ardealite using the present invention
Organic matter debris and inorganic contaminants removal of impurities etc. have preferable effect, and add water to prepare β types phosphorus building to later stage ardealite
The intensity of plastering has significant impact.Therefore, it is to pass using the mechanism of action of the invention for preparing β type phosphorus plaster of Paris
Distilled preparation process on the basis of the ardealite processing method of system, fully accelerates the organic matter removal of impurities of ardealite and reduces
Test period.
Embodiment
The present invention is described in further detail below by embodiment, but the scope of the present invention is not limited in described
Hold.
Embodiment 1
The preparation method of β type phosphorus plaster of Paris is developed described in the present embodiment using microwave, specifically includes following steps：
（1）Ardealite is taken, is sieving through the sieve that sieve aperture is 0.15mm, collects the ardealite after screening in case using；
（2）Ardealite after screening is put into microwave container, the ardealite after screening is put into EG025LC7-NSH types
Microwave treatment is carried out in micro-wave oven；
（3）It is 1 by ardealite, water, citric acid weight ratio:0.667:0.003 ratio by the ardealite after microwave, water,
Citric acid mixes；
（4）By step（3）The material stirring of middle mixing is allowed to uniform in more than 10min, then stands more than 30min；
（5）By step（4）In in the material that is stirred, add Ca (OH)2, more than 10min is stirred, stands more than 30min,
Measure pH value, repeat step（5）In above step, until material pH value scope between 7 ~ 10；
（6）By step（5）The middle material to have discharged is put into drying box material disc, it is desirable to material in disk thickness be 2cm ~
4cm；Material is put into and becomes hot blast thermostatic drying chamber with 145 DEG C of heating 3.5h, wherein since reaching after 145 DEG C drying box
Timing；
（7）Take out step（6）Middle drying box heats the ardealite completed when placing its temperature and being reduced to 20 ~ 30 DEG C,
The sieve that sieve aperture is 0.15mm is sieving through, the ardealite after screening is collected, has just obtained β type phosphorus plaster of Paris.
The step（2）Middle microwave treatment ardealite, microwave output power 1000w, microwave time 30min.
The step（3）The average grain diameter of middle citric acid is 1 μm ~ 1mm, and composition and mass percent scope are：
C6H8O7·H2O：≤ 99.5%, remaining is impurity.
Detect the technological property of above-mentioned phosphorus plaster of Paris：Slurry presetting period, final setting time are as shown in table 1, meet GB/T
23456-2009 technical requirements；Detection through water resistance coefficient of softing, the β type phosphorus plaster of Paris test blocks in embodiment 1 do not have
Cracking, is not also deformed, coefficient of softing is as shown in table 1.According to GB/T17671-1999《Test method for strength of hydraulic cement mortar（ISO
Method）》It is as shown in table 1 to survey its intensity level.
The β type phosphorus plaster of Paris technological properties of table 1
Embodiment 2：
The preparation method of β type phosphorus plaster of Paris is developed described in the present embodiment using microwave, specifically includes following steps：
（1）Ardealite is taken, is sieving through the sieve that sieve aperture is 0.15mm, collects the ardealite after screening in case using；
（2）Ardealite after screening is put into microwave container, the ardealite after screening is put into EG025LC7-NSH types
Microwave treatment is carried out in micro-wave oven；
（3）It is 1 by ardealite, water, citric acid weight ratio:0.5:0.00325 ratio by the ardealite after microwave, water,
Citric acid mixes；
（4）By step（3）The material stirring of middle mixing is allowed to uniform in more than 10min, then stands more than 30min；
（5）By step（4）In in the material that is stirred, add Ca (OH)2, more than 10min is stirred, stands more than 30min,
Measure pH value, repeat step（5）In above step, until material pH value scope between 7 ~ 10；
（6）By step（5）The middle material to have discharged is put into drying box material disc, it is desirable to material in disk thickness be 2cm ~
4cm；Material is put into and becomes hot blast thermostatic drying chamber with 145 DEG C of heating 3.5h, wherein since reaching after 145 DEG C drying box
Timing；
（7）Take out step（6）Middle drying box heats the ardealite completed when placing its temperature and being reduced to 20 ~ 30 DEG C,
The sieve that sieve aperture is 0.15mm is sieving through, the ardealite after screening is collected, has just obtained β type phosphorus plaster of Paris.
The step（2）Middle microwave treatment ardealite, microwave output power 1000w, microwave time 30min.
The step（3）The average grain diameter of middle citric acid is 1 μm ~ 1mm, and composition and mass percent scope are：
C6H8O7·H2O：≤ 99.5%, remaining is impurity.
Detect the technological property of above-mentioned phosphorus plaster of Paris：Slurry presetting period, final setting time are as shown in table 2, meet GB/T
23456-2009 technical requirements；Detection through water resistance coefficient of softing, the β type phosphorus plaster of Paris test blocks in embodiment 2 do not have
Cracking, is not also deformed, coefficient of softing is as shown in table 2.According to GB/T17671-1999《Test method for strength of hydraulic cement mortar（ISO
Method）》It is as shown in table 2 to survey its intensity level.
The β type phosphorus plaster of Paris technological properties of table 2
Embodiment 3：
The preparation method of β type phosphorus plaster of Paris is developed described in the present embodiment using microwave, specifically includes following steps：
（1）Ardealite is taken, is sieving through the sieve that sieve aperture is 0.15mm, collects the ardealite after screening in case using；
（2）Ardealite after screening is put into microwave container, the ardealite after screening is put into EG025LC7-NSH types
Microwave treatment is carried out in micro-wave oven；
（3）It is 1 by ardealite, water, citric acid weight ratio:0.333:0.0035 ratio by the ardealite after microwave, water,
Citric acid mixes；
（4）By step（3）The material stirring of middle mixing is allowed to uniform in more than 10min, then stands more than 30min；
（5）By step（4）In in the material that is stirred, add Ca (OH)2, more than 10min is stirred, stands more than 30min,
Measure pH value, repeat step（5）In above step, until material pH value scope between 7 ~ 10；
（6）By step（5）The middle material to have discharged is put into drying box material disc, it is desirable to material in disk thickness be 2cm ~
4cm；Material is put into and becomes hot blast thermostatic drying chamber with 145 DEG C of heating 3.5h, wherein since reaching after 145 DEG C drying box
Timing；
（7）Take out step（6）Middle drying box heats the ardealite completed when placing its temperature and being reduced to 20 ~ 30 DEG C,
The sieve that sieve aperture is 0.15mm is sieving through, the ardealite after screening is collected, has just obtained β type phosphorus plaster of Paris.
The step（2）Middle microwave treatment ardealite, microwave output power 1000w, microwave time 30min.
The step（3）The average grain diameter of middle citric acid is 1 μm ~ 1mm, and composition and mass percent scope are：
C6H8O7·H2O：≤ 99.5%, remaining is impurity.
Detect the technological property of above-mentioned phosphorus plaster of Paris：Slurry presetting period, final setting time are as shown in table 2, meet GB/T
23456-2009 technical requirements；Detection through water resistance coefficient of softing, the β type phosphorus plaster of Paris test blocks in embodiment 3 do not have
Cracking, is not also deformed, coefficient of softing is as shown in table 3.According to GB/T17671-1999《Test method for strength of hydraulic cement mortar（ISO
Method）》It is as shown in table 3 to survey its intensity level.
The β type phosphorus plaster of Paris technological properties of table 3
The embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula, in those of ordinary skill in the art's possessed knowledge, it can also make on the premise of present inventive concept is not departed from
Go out various change.
Claims (1)
1. a kind of preparation method that β type phosphorus plaster of Paris is developed using microwave, it is characterised in that specifically include following steps：
（1）Ardealite is taken, is sieving through the sieve that sieve aperture is 0.15mm, collects the ardealite after screening in case using；
（2）Ardealite after screening is put into microwave container, the ardealite after screening is put into EG025LC7-NSH type microwaves
Microwave treatment is carried out in stove；
（3）It is 1 by ardealite, water, citric acid weight ratio:0.667~0.333:0.003 ~ 0.0035 ratio is by the phosphorus after microwave
Gypsum, water, citric acid mixing；
（4）By step（3）The material stirring of middle mixing is allowed to uniform in more than 10min, then stands more than 30min；
（5）By step（4）In in the material that is stirred, add Ca (OH)2, more than 10min is stirred, stands more than 30min, measurement
PH values, repeat step（5）In above step, until material pH values scope between 7 ~ 10；
（6）By step（5）The middle material to have discharged is put into drying box material disc, it is desirable to which material thickness in disk is 2cm ~ 4cm；
Material is put into and becomes hot blast thermostatic drying chamber with 145 DEG C of heating 3.5h, wherein being counted since reaching after 145 DEG C drying box
When；
（7）Take out step（6）Middle drying box heats the ardealite completed when placing its temperature and being reduced to 20 ~ 30 DEG C, by it
The sieve that sieve aperture is 0.15mm is sieving through, the ardealite after screening is collected, has just obtained β type phosphorus plaster of Paris；
The step（2）Middle microwave treatment ardealite, microwave output power 1000W, microwave time 30min；
The step（3）The average grain diameter of middle citric acid is 1 μm ~ 1mm, and composition and mass percent scope are：C6H8O7·H2O：
≤ 99.5%, remaining is impurity.
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| CN201510566853.6A CN105197977B (en) | 2015-09-09 | 2015-09-09 | A kind of preparation method that β type phosphorus plaster of Paris is developed using microwave |
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| CN105197977B true CN105197977B (en) | 2018-03-06 |
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| CN108314341B (en) * | 2018-03-12 | 2021-01-12 | 湘潭大学 | Production process method of gypsum powder with various strength properties |
| CN109851261A (en) * | 2018-12-10 | 2019-06-07 | 华南理工大学 | A kind of environment-friendly type land plaster and the preparation method and application thereof |
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| CN102633347A (en) * | 2012-04-27 | 2012-08-15 | 昆明理工大学 | Method for treating cadmium-containing wastewater by utilizing microwave modified ardealite |
| CN102701620B (en) * | 2012-06-27 | 2014-09-03 | 昆明理工大学 | Method utilizing microwave technique to induce modified ardealite |
| CN104310830B (en) * | 2014-10-21 | 2017-06-06 | 金正大生态工程集团股份有限公司 | A kind of method that β high purity plaster powder is produced with ardealite |
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Effective date of registration: 20200420 Address after: 650000 building 35, xingtun community, Datun New District, Anning City, Kunming City, Yunnan Province Patentee after: Yunnan ningchuang Environmental Protection Technology Co., Ltd Address before: 650093 Kunming, Yunnan, Wuhua District Road, No. 253 Patentee before: Kunming University of Science and Technology |
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