CN105837070A - Radiation preparation method of anhydrous calcium sulfate modified by silane derivative - Google Patents
Radiation preparation method of anhydrous calcium sulfate modified by silane derivative Download PDFInfo
- Publication number
- CN105837070A CN105837070A CN201610233024.0A CN201610233024A CN105837070A CN 105837070 A CN105837070 A CN 105837070A CN 201610233024 A CN201610233024 A CN 201610233024A CN 105837070 A CN105837070 A CN 105837070A
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- CN
- China
- Prior art keywords
- temperature
- modifying agent
- silane derivative
- calcium sulfate
- radiation
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- 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
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- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Disclosed is a radiation preparation method of anhydrous calcium sulfate modified by a silane derivative. The invention belongs to the field of a non-metal material. Calcium sulphate dihydrate (gypsum) which is an industrial residue is taken as a base material, and the method is used for preparing a precursor raw powdery material of a high-performance compound section. A section or a board made from the raw material is excellent in physical properties and is cost-effective.
Description
Technical field
The invention belongs to field of non-metallic materials.It is as base material with industrial residue calcium sulphate dihydrate (Gypsum Fibrosum), the method preparing high-performance compound material precursor powder raw material.Section bar, the sheet material prepared with this raw material have splendid physical property and cost performance.
Background technology
Due to ambient pressure and the double drive of recycling economy, make industrial residue Gypsum Fibrosum such as: the in depth of desulfurated plaster, fluorgypsum, ardealite etc. and superior utilization are by extensive concern.Current domestic use fluidized bed furnace adds the beta-type semi-hydrated gypsum that ball mill produces and there are two big defects: 1 moulding process mixing water parameter ambassador's gypsum crystallization body density deficiency, shows that product intensity is low, water absorption rate is high, constrains application level and range of application.The filler being difficult to improve with aggregate, muscle material etc. physical property during 2 this beta-type semi-hydrated gypsum crystallization forms bonding or bonds, and physical property is the most just difficult to improve, and has more limited to application level and scope.The dead plaster of the inventive method processing overcomes the defect of above-mentioned Gypsum Fibrosum, makes gypsum application level improve, and range of application is widened.Moulding process mixing water parameter is low suitable with alpha semi-hydrated gypsum, and can form good intensity by the excessive body of macromolecule and filler, part physical index such as: comprcssive strength, rupture strength, anti-impact force etc. with macromolecular material quite, are even more than.This technique can realize production line balance, it is easy to realizes intellectually and automatically, it is achieved micronic dust or dustfree industry.
Summary of the invention
The present invention is as base material with industrial residue calcium sulphate dihydrate (Gypsum Fibrosum), the method preparing high-performance compound material precursor powder raw material.Section bar, the sheet material prepared with this raw material have splendid physical property and cost performance.The following technique of this powder material: 1 heats, 2 coolings add modifying agent, 3 stirrings heat up, 4 dischargings.4 steps realize.
Step 1 is heated: heat with remote, near-infrared radiation or microwave radiation mode, preferably near-infrared radiation.When using one direction near-infrared radiation to heat, raw material is less than 3cm at light projecting direction vertical thickness.Warm temperature is 300 DEG C to 350 DEG C preferable temperature 300 DEG C, persistently heats the 5-10 second after body bottom temp of being heated by radiation reaches requirement.
Step 2 and step 3 use high speed mixer to realize preferably with the high speed mixer of hot and cold chuck.
Step 2 cooling adds modifying agent: first turns on the cooling circulation of high speed mixer, open moderate-speed mixer, add the heat material of step 1, start to lower the temperature and add modifying agent when temperature of charge is less than 80 DEG C to 90 DEG C preferably 85 DEG C, modifying agent be one end be hydrolyzable groups one end be the silane derivative of the organic chain with organo-functional group, addition is mass percent 0.1% 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 heats up: heat up and chuck can be used to heat up or powder body temperature arrising caused by friction, preferably temperature arrising caused by friction.Warming temperature 110 DEG C to 160 DEG C must continue stirring after reaching temperature allows reaction be sufficiently complete for 8-10 minute.
Step 2 and the time of step 3 material entirety stirring and mode affect specific surface area of finished products, should be according to product demand flexible Application.
Step 4 discharging: for avoiding modifying agent overreaction, aging or decompose, step 3 complete after want quick blowing, discharging also cools down, fast cooling to 50 DEG C below pack, ripening was dispatched from the factory after 48 hours.
Example
Manas' power plant desulfurization gypsum natural environment is stacked 30 days, take above-mentioned raw materials 1kg and mat formation in stainless steel metal box with thickness 3cm, with Muffle furnace change the outfit near infrared light wave duct radiation heat, temperature stabilization is heated 10 minutes at 300 DEG C, 5 liters of high speed mixers are poured in taking-up into, open moderate-speed mixer, be slowly dropped into when temperature of charge 85 DEG C one end be hydrolyzable groups one end be the silane derivative acrylic different TMOS 5g of the organic chain with organo-functional group.Opening high-speed stirred temperature arrising caused by friction to 110 DEG C, continue stirring discharging in 10 minutes, quickly cool less than 50 DEG C, ripening obtains stable radiation for 48 hours and prepares silane derivative modified anhydrous calcium sulfate sample.
Above example is a concrete scheme of the present invention, does not represent invention full content.Right of the present invention is shown in " claims ".
Claims (7)
1. this powder is with industrial residue calcium sulphate dihydrate for the following technique of base material: 1 heats, and 2 coolings add modifying agent, 3 stirrings heat up, 4 dischargings, and 4 steps realize.
2., according to claim 1, the heating mode of step 1 is heated for remote, near-infrared or microwave radiation, and warm temperature is 300 DEG C to 350 DEG C, and the preferred near-infrared radiation of heating mode is heated, warm temperature preferably 300 DEG C.
3., according to claim 1, step 2 and step 3 are being to realize, preferably with the high speed mixer of hot and cold chuck in high speed mixer.
4. the chilling temperature of step 2 cooling addition modifying agent controls at 90 DEG C at 80 DEG C preferably 85 DEG C.
5. according to claim 1, the modifying agent of modifying agent that step 2 cooling adds be one end be hydrolyzable groups one end be the silane derivative of the organic chain with organo-functional group, addition is mass percent 0.1% to 0.8% preferably 0.5%.
6. stirring intensification according to claim 1 step 3 and can use temperature arrising caused by friction or chuck intensification, preferably temperature arrising caused by friction, warming temperature, at 110 DEG C to 160 DEG C, continues mixing time 8-10 minute after reaching predetermined temperature.
7., according to claim 1, step 4 discharging less than the 50 DEG C packs that quickly cool, ripening was dispatched from the factory after 48 hours.
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 true CN105837070A (en) | 2016-08-10 |
| CN105837070B CN105837070B (en) | 2018-02-27 |
Family
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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 |
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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 |
|---|
| 赵武: "硬石膏精细化加工技术及其应用", 《工程科技Ⅰ辑》 * |
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| CN105837070B (en) | 2018-02-27 |
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