CN105837070B - A kind of method that radiation prepares silane derivative modified anhydrous calcium sulfate - Google Patents
A kind of method that radiation prepares silane derivative modified anhydrous calcium sulfate Download PDFInfo
- Publication number
- CN105837070B CN105837070B CN201610233024.0A CN201610233024A CN105837070B CN 105837070 B CN105837070 B CN 105837070B CN 201610233024 A CN201610233024 A CN 201610233024A CN 105837070 B CN105837070 B CN 105837070B
- Authority
- CN
- China
- Prior art keywords
- silane derivative
- calcium sulfate
- anhydrous calcium
- radiation
- derivative modified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/007—After-treatment of the dehydration products, e.g. aging, stabilisation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of method that radiation prepares silane derivative modified anhydrous calcium sulfate.The invention belongs to field of non-metallic materials.It is with industrial residue calcium sulphate dihydrate（Gypsum）For base material, the method for preparing high-performance compound material precursor powder raw material.Section bar, the sheet material prepared with the raw material has splendid physical property and cost performance.
Description
Technical field
The invention belongs to field of non-metallic materials.It is with industrial residue calcium sulphate dihydrate（Gypsum）For base material, high-performance is prepared
The method of composite material precursor powder raw material.Section bar, the sheet material prepared with the raw material has splendid physical property and cost performance.
Background technology
Due to environmental pressure and the double drive of recycling economy, make industrial residue gypsum such as：Desulfurated plaster, fluorgypsum, phosphorus
The in depth of gypsum etc. and superior utilization are by extensive concern.The domestic β types produced using fluidized bed furnace ball adding grinding machine at present
Two big defects be present in semi-hydrated gypsum：1 moulding process mixing water parameter ambassador's gypsum crystallization volume density deficiency, shows product intensity
It is low, water absorption rate is high, constrain application level and application.It is difficult with aggregate, muscle material etc. during 2 this beta-type semi-hydrated gypsums crystallization
The filler for improving physical property forms bonding or bonded, and physical property is also just difficult to improve, and has more limited to application level and scope.
The defects of dead plaster of the inventive method processing overcomes above-mentioned gypsum, improves gypsum application level, and application is opened up
It is wide.Moulding process mixing water parameter is low suitable with alpha semi-hydrated gypsum, and can be formed well by the excessive body of macromolecule and filler
Intensity, part physical index is such as：Compression strength, rupture strength, anti-impact force etc. are suitable with high polymer material, even more than.Should
Technique can realize production line balance, it is easy to realize intellectually and automatically, realize micronic dust or dustfree industry.
The content of the invention
The present invention is with industrial residue calcium sulphate dihydrate（Gypsum）For base material, high-performance compound material precursor powder original is prepared
The method of material.Section bar, the sheet material prepared with the raw material has splendid physical property and cost performance.The following work of the powder material
Skill：1 heating, 2 coolings add modifying agent, 3 stirring heatings, 4 dischargings.4 steps are realized.
Step 1 heats：Heated in a manner of remote, near-infrared radiation or microwave radiation, preferably near-infrared radiation.Use one direction
Raw material is no more than 3cm in light projection direction vertical thickness when near-infrared radiation heats.Warm temperature is 300 DEG C to 350 DEG C preferred
300 DEG C of temperature, the 5-10 seconds are persistently heated after requirement is reached by radiation heating body bottom temp.
Step 2 and step 3 realize the high speed mixer for preferably carrying hot and cold chuck using high speed mixer.
Step 2 cooling adds modifying agent：First turn on the cooling circulation of high speed mixer, open moderate-speed mixer, added
Into the hot material of step 1, start cooling and add modifying agent when temperature of charge is less than 80 DEG C to 90 DEG C preferably 85 DEG C, modifying agent is one
It is mass percent 0.1% to hold as the silane derivative that hydrolyzable groups one end is the organic chain with organo-functional group, addition
To 0.8% preferably 0.5%.Modifying agent closes cooling after all adding, and opens high-speed stirred and enters step 3.
Step 3 stirring heating：Heating can use chuck heating or powder temperature arrising caused by friction, preferably temperature arrising caused by friction.Heating
110 DEG C to 160 DEG C of temperature must continue after temperature is reached stir 8-10 minutes allow reaction fully complete.
The time and mode that step 2 and step 3 material integrally stir influence specific surface area of finished products, should be according to product demand spirit
Application living.
Step 4 discharges：To avoid modifying agent overreaction, aging or decomposition, quick blowing is wanted after the completion of step 3, is discharged
And cool down, fast cooling dispatches from the factory to less than 50 DEG C packs, curing after 48 hours.
Example
Manas' power plant desulfurization gypsum natural environment is stacked 30 days, takes above-mentioned raw materials 1kg to mat formation with thickness 3cm in stainless steel
In can, with Muffle furnace change the outfit near infrared light wave duct radiation heating, temperature stabilization 300 DEG C heat 10 minutes, taking-up pour into 5
Rise high speed mixer, open moderate-speed mixer, be slowly dropped into when 85 DEG C of temperature of charge one end be hydrolyzable groups one end be with
The different TMOS 5g of silane derivative acrylic of the organic chain of organo-functional group.High-speed stirred temperature arrising caused by friction is opened to 110 DEG C,
Continue stirring to discharge for 10 minutes, quickly cool to less than 50 DEG C, the curing radiation stablized in 48 hours prepares silane and spread out
Bio-modification dead plaster sample.
Above example is the concrete scheme of the present invention, does not represent invention full content.Right of the present invention is shown in《Power
Sharp claim》.
Claims (1)
1. a kind of method that radiation prepares silane derivative modified anhydrous calcium sulfate, the powder using industrial residue calcium sulphate dihydrate as
Base material（1）300 DEG C -350 DEG C are warmed to near-infrared radiation；（2）It is that hydrolyzable groups one end is to be cooled to 90 DEG C and add one end
The silane derivative of the organic chain of organo-functional group, addition are mass percent 0.1% to 0.8%；（3）Stirring is warming up to 110
DEG C continue to stir 8-10 minutes；（4）Discharge and quickly cool to less than 50 DEG C packs, curing and dispatch from the factory 4 and walk after 48 hours
It is rapid to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233024.0A CN105837070B (en) | 2016-04-15 | 2016-04-15 | A kind of method that radiation prepares silane derivative modified anhydrous calcium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233024.0A CN105837070B (en) | 2016-04-15 | 2016-04-15 | A kind of method that radiation prepares silane derivative modified anhydrous calcium sulfate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105837070A CN105837070A (en) | 2016-08-10 |
| CN105837070B true CN105837070B (en) | 2018-02-27 |
Family
ID=56597613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610233024.0A Expired - Fee Related CN105837070B (en) | 2016-04-15 | 2016-04-15 | A kind of method that radiation prepares silane derivative modified anhydrous calcium sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105837070B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182410A (en) * | 1995-04-25 | 1998-05-20 | 克里斯蒂安·杜赛尔 | Processing equipment and method for pulverulent calcium sulphate material and novel hydraulic binder |
| CN1781870A (en) * | 2004-11-25 | 2006-06-07 | 瓦克化学有限公司 | Mixture of siloxanes functionalized with glycols |
| CN102515594A (en) * | 2011-12-31 | 2012-06-27 | 四川宏达股份有限公司 | Gypsum powder calcination technology |
| CN203451375U (en) * | 2013-09-16 | 2014-02-26 | 新乡市北海砂浆成套设备有限公司 | Gypsum calcining equipment |
| CN105036580A (en) * | 2015-07-24 | 2015-11-11 | 湖南省小尹无忌环境能源科技开发有限公司 | Method for processing ardealite by using fluidized bed furnace to prepare special anhydrite cementing material |
-
2016
- 2016-04-15 CN CN201610233024.0A patent/CN105837070B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182410A (en) * | 1995-04-25 | 1998-05-20 | 克里斯蒂安·杜赛尔 | Processing equipment and method for pulverulent calcium sulphate material and novel hydraulic binder |
| CN1781870A (en) * | 2004-11-25 | 2006-06-07 | 瓦克化学有限公司 | Mixture of siloxanes functionalized with glycols |
| CN102515594A (en) * | 2011-12-31 | 2012-06-27 | 四川宏达股份有限公司 | Gypsum powder calcination technology |
| CN203451375U (en) * | 2013-09-16 | 2014-02-26 | 新乡市北海砂浆成套设备有限公司 | Gypsum calcining equipment |
| CN105036580A (en) * | 2015-07-24 | 2015-11-11 | 湖南省小尹无忌环境能源科技开发有限公司 | Method for processing ardealite by using fluidized bed furnace to prepare special anhydrite cementing material |
Non-Patent Citations (1)
| Title |
|---|
| 硬石膏精细化加工技术及其应用;赵武;《工程科技Ⅰ辑》;20130215(第2期);第23页表3.1，第24页最后一段，第25页第1段及图3-1，第26页第2段 * |
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| Publication number | Publication date |
|---|---|
| CN105837070A (en) | 2016-08-10 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 Termination date: 20210415 |