CN106554025A - A kind of modified active technique of attapulgite - Google Patents
A kind of modified active technique of attapulgite Download PDFInfo
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- CN106554025A CN106554025A CN201510636628.5A CN201510636628A CN106554025A CN 106554025 A CN106554025 A CN 106554025A CN 201510636628 A CN201510636628 A CN 201510636628A CN 106554025 A CN106554025 A CN 106554025A
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Abstract
The invention discloses a kind of modified active technique of attapulgite, comprises the following steps：Attapulgite is added in water after crushing, and after stirring, soaking, centrifugal treating, filtration, drying are standby；It is added in phosphoric acid solution, and is stirred and heats；Modified attapulgite；By modified attapulgite heat temperature raising, and vapor and attapulgite haptoreaction are made by inert nitrogen gas；After reaction terminates, start cooling, and stop adding vapor, after temperature is down to room temperature, takes out attapulgite, washed and be dried.The present invention carries out activation processing to attapulgite using high-temperature vapor, and the processing procedure pickling-free discharge of wastewater improves the environmentally friendly efficiency of production process, reduces production cost.
Description
Technical field
The present invention relates to a kind of modified active technique of attapulgite, belongs to technical field of material.
Background technology
Attapulgite is also known as Paligorskite（Palygorskite）Or Palygorskite, it is a kind of clay mineral of magnesium silicate containing Shuifu County of tool chain layer structure.Its structure belongs to 2：1 type clay mineral.Each 2：In 1 unit structure layer, direction overturns at a certain distance on tetrahedron chip angle top, cambium layer chain.The passage parallel with chain, about 3.7*6.3A ° of channel cross section are formed in tetrahedron bar interband.
Chinese patent discloses various structural materials with attapulgite as peplos etc., but in prior art, usually due to
The modified operation of attapulgite exist purification not science, the modified reason such as not thorough and affect the performance and work of attapulgite
With viscosity not enough, is made peplos or other structural materials also easily cause disintegrate.
The content of the invention
To overcome above-mentioned deficiency, it is an object of the present invention to provide a kind of modified active technique of attapulgite, improves attapulgite modified front purity, promote the thoroughly modified of attapulgite and activate.
The solution of the present invention is as follows：A kind of modified active technique of attapulgite, comprises the following steps：
（1）, attapulgite crush as 5～15 mesh, the attapulgite after crushing is added in water, is stirred, after immersion 16-20 hours, centrifugal treating 15-30min；After centrifugation, filter, be dried, it is standby；
（2）, by above-mentioned steps 1）The attapulgite for processing is added in phosphoric acid solution, and is stirred and is heated, and mixing speed is 50-300r/min, heating-up temperature 70-90 DEG C；
（3）, by step 2）The attapulgite for processing is filtered, is dried and pulverization process, obtains modified attapulgite；Modified attapulgite is increased to into 250-300 DEG C from room temperature, and vapor and attapulgite haptoreaction is made by inert nitrogen gas；After reaction terminates, start cooling, and stop adding vapor, after temperature is down to room temperature, takes out attapulgite, washed and be dried.
Further, the step（1）In, attapulgite is 1 with the mass ratio of water： 12-16.
Further, the step（1）In, the rotating speed of centrifuge is 1500～1800r/min.
Further, described phosphoric acid solution concentration is 5%.
The present invention carries out activation processing to attapulgite using high-temperature vapor, and the processing procedure pickling-free discharge of wastewater improves the environmentally friendly efficiency of production process, reduces production cost.
The degree of grinding of the present invention, soak time and the isoparametric selection of centrifugal rotational speed and concrete step greatly enhance the purity of attapulgite, and substantially reduce attapulgite purification and the required time that is modified.
Specific embodiment
With reference to embodiment, the present invention will be further described.
Embodiment 1
A kind of modified active technique of attapulgite, comprises the following steps：
（1）, attapulgite crush as 15 mesh, the attapulgite after crushing is added in water, attapulgite is 1 with the mass ratio of water：15, stir, after soaking 18 hours, centrifugal treating 25min, the rotating speed of centrifuge is 1600r/min；After centrifugation, filter, be dried, it is standby；
（2）, by above-mentioned steps 1）During the attapulgite for processing is added to as 5% phosphoric acid solution, and it is stirred and heats, mixing speed is 150r/min, 85 DEG C of heating-up temperature；
（3）, by step 2）The attapulgite for processing is filtered, is dried and pulverization process, obtains modified attapulgite；Modified attapulgite is increased to into 260 DEG C from room temperature, and vapor and attapulgite haptoreaction is made by inert nitrogen gas；After reaction terminates, start cooling, and stop adding vapor, after temperature is down to room temperature, takes out attapulgite, washed and be dried.
Embodiment 2
（1）, attapulgite crush as 10 mesh, the attapulgite after crushing is added in water, attapulgite is 1 with the mass ratio of water：14, stir, after soaking 20 hours, centrifugal treating 20min, the rotating speed of centrifuge is 1700r/min；After centrifugation, filter, be dried, it is standby；
（2）, by above-mentioned steps 1）During the attapulgite for processing is added to as 5% phosphoric acid solution, and it is stirred and heats, mixing speed is 220r/min, 85 DEG C of heating-up temperature；
（3）, by step 2）The attapulgite for processing is filtered, is dried and pulverization process, obtains modified attapulgite；Modified attapulgite is increased to into 280 DEG C from room temperature, and vapor and attapulgite haptoreaction is made by inert nitrogen gas；After reaction terminates, start cooling, and stop adding vapor, after temperature is down to room temperature, takes out attapulgite, washed and be dried.
Embodiment 3
（1）, attapulgite crush as 9 mesh, the attapulgite after crushing is added in water, attapulgite is 1 with the mass ratio of water：13, stir, after soaking 16 hours, centrifugal treating 18min, the rotating speed of centrifuge is 1600r/min；After centrifugation, filter, be dried, it is standby；
（2）, by above-mentioned steps 1）During the attapulgite for processing is added to as 5% phosphoric acid solution, and it is stirred and heats, mixing speed is 180r/min, 75 DEG C of heating-up temperature；
（3）, by step 2）The attapulgite for processing is filtered, is dried and pulverization process, obtains modified attapulgite；Modified attapulgite is increased to into 265 DEG C from room temperature, and vapor and attapulgite haptoreaction is made by inert nitrogen gas；After reaction terminates, start cooling, and stop adding vapor, after temperature is down to room temperature, takes out attapulgite, washed and be dried.
Although giving detailed description and explanation to the specific embodiment of the present invention above; but it should be noted that; we can carry out various equivalent changes and modification according to the conception of the present invention to above-mentioned embodiment; function produced by which still without departing from description covered it is spiritual when, all should be within protection scope of the present invention.
Claims (4)
1. the modified active technique of a kind of attapulgite, it is characterised in that comprise the following steps：
（1）, attapulgite crush as 5～15 mesh, the attapulgite after crushing is added in water, is stirred, after immersion 16-20 hours, centrifugal treating 15-30min；After centrifugation, filter, be dried, it is standby；
（2）, by above-mentioned steps 1）The attapulgite for processing is added in phosphoric acid solution, and is stirred and is heated, and mixing speed is
50-300r/min, heating-up temperature 70-90 DEG C；
（3）, by step 2）The attapulgite for processing is filtered, is dried and pulverization process, obtains modified attapulgite；Modified attapulgite is increased to into 250-300 DEG C from room temperature, and vapor and attapulgite haptoreaction is made by inert nitrogen gas；After reaction terminates, start cooling, and stop adding vapor, after temperature is down to room temperature, takes out attapulgite, washed and be dried.
2. a kind of modified active technique of attapulgite clay according to claim 1, it is characterised in that the step（1）In, attapulgite is 1 with the mass ratio of water： 12-16.
3. a kind of modified active technique of attapulgite clay according to claim 1, it is characterised in that the step（1）In, the rotating speed of centrifuge is 1500～1800r/min.
4. the modified active technique of a kind of attapulgite clay according to claim 1, it is characterised in that described phosphoric acid solution concentration is 5%.
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| CN201510636628.5A CN106554025A (en) | 2015-09-30 | 2015-09-30 | A kind of modified active technique of attapulgite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315432A (en) * | 2017-06-21 | 2017-11-03 | 淮阴工学院 | A kind of control system in the modified active of attapulgite |
| CN115477832A (en) * | 2022-10-11 | 2022-12-16 | 福建凯基高分子材料股份有限公司 | Preparation method of PBAT degradable mulching film |
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| CN107315432A (en) * | 2017-06-21 | 2017-11-03 | 淮阴工学院 | A kind of control system in the modified active of attapulgite |
| CN107315432B (en) * | 2017-06-21 | 2019-08-20 | 淮阴工学院 | A kind of control system in the modified active of attapulgite |
| CN115477832A (en) * | 2022-10-11 | 2022-12-16 | 福建凯基高分子材料股份有限公司 | Preparation method of PBAT degradable mulching film |
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