CN106186755A - Gypsum Fibrosum preparata and preparation method thereof - Google Patents
Gypsum Fibrosum preparata and preparation method thereof Download PDFInfo
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- CN106186755A CN106186755A CN201610525647.5A CN201610525647A CN106186755A CN 106186755 A CN106186755 A CN 106186755A CN 201610525647 A CN201610525647 A CN 201610525647A CN 106186755 A CN106186755 A CN 106186755A
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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
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/036—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln, i.e. to obtain beta-hemihydrate
-
- 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
- C04B11/002—Mixtures of different CaSO4-modifications, e.g. plaster of Paris and anhydrite, used as cements
-
- 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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a kind of Gypsum Fibrosum preparata and preparation method thereof, this Gypsum Fibrosum preparata, it contains β CaSO4·1/2H2The percentage by weight of O is 65.8%～68.6%, β CaSO4Percentage by weight be 16.6%～18.4%, CaSO4·2H2The percentage by weight of O is 0.30%～0.44%, and surplus is impurity.The Gypsum Fibrosum preparata of the present invention, the presetting period can be extended at 1 ' 45 second to 1 ' 55 second, make the ingredient station of plasterboard, the slip presetting period extends to 20 25 seconds, improve slip flowing sexual state, producing without obvious floating block at stripper plate leading portion slip accumulation, product examination edge bubble percent defective can be down to 2% by 20%.
Description
Technical field
The present invention relates to plaster plate making field, particularly relate to a kind of to reduce the ripe of gypsum board products edge bubble
Gypsum Fibrosum and make the preparation method of this Gypsum Fibrosum preparata.
Background technology
Gypsum lath product line ingredient station technology controlling and process, the process control to product quality plays a key effect, mesh
Front domestic gypsum board production line linear speed is generally at 40-60m/min, if after running beyond this scope, and the raising of production line linear speed
The strictest to the process control needs of ingredient station.
Wherein, slip after dispensing flowing sexual state directly affects the inherent quality of product, once ingredient station slip
Mobility state difference, then easily form floating block, and floating block easily rolled up after gradually hardening during entering stripper plate molding on slip top layer
Enter air, cause final gypsum board products edge to produce bubble.
Learning by analysis, the reason of generation bubble is that the speed of gypsum slurry initial set is too short, and it is before entering stripper plate
In section banking process, too early initial set formation floating block, and floating block mobility state difference, under mask paper runs, step into extruding
In plate；Owing to slip has reached initial set in floating block, substantially lose flowability, present tear shape, meeting during entering stripper plate
Produce space, be involved in air aftershaping, resulting in product edge bubble.
Prior art solves this problem, and general employing retarder extends setting time, but the interpolation of retarder needs
Will could grasp addition through great many of experiments, which is cumbersome.
Summary of the invention
The invention aims to provide a kind of Gypsum Fibrosum preparata that can extend the presetting period,
It is a further object to provide and a kind of obtain a kind of ripe stone extending the presetting period by technology controlling and process
The preparation method of cream.
Especially, the invention provides a kind of Gypsum Fibrosum preparata, wherein,
Containing β-CaSO4·1/2H2The percentage by weight of O is 65.8%～68.6%, β-CaSO4Percentage by weight be
16.6%～18.4%, CaSO4·2H2The percentage by weight of O is 0.30%～0.44%, and surplus is impurity.
Further, described β-CaSO4·1/2H2The percentage by weight of O is 66.8%～67.8%, β-CaSO4Weight
Percentage ratio is 17%～18%, CaSO4·2H2The percentage by weight of O is 0.35%～0.4%, and surplus is impurity.
The preparation method of a kind of Gypsum Fibrosum preparata of this offer, comprises the steps:
Step 10, raw material and heat smoke being simultaneously fed into beater, raw material is dried by heat smoke while being broken up, logical
Cross the temperature controlling heat smoke, make the content of each composition in raw material meet preassigned；
Raw material after step 20, drying is re-fed into ball mill grinding after cottrell dedusting；
Raw material after step 30, grinding is sent into cooler and is cooled down by preset temperature；
The ageing of grog storehouse sent into by raw material after step 40, cooling, after default ageing, obtains final products.
Further, in described step 10, the moisture content of described raw material is 10%, and the temperature of described heat smoke is 167-
169 degree.
Further, in described step 10, in described raw material, the content of each composition meets preassigned and refers to: in raw material
β-CaSO4·1/2H2The percentage by weight of O is 65.8%～68.6%, β-CaSO4Percentage by weight be 16.6%～
18.4%, CaSO4·2H2The percentage by weight of O is 0.30%～0.44%, and surplus is impurity.
Further, in described step 10, in described raw material, the content of each composition meets preassigned and refers to: in raw material
β-CaSO4·1/2H2The percentage by weight of O is 66.8%～67.8%, β-CaSO4Percentage by weight be 17%～18%,
CaSO4·2H2The percentage by weight of O is 0.35%～0.4%, and surplus is impurity.
Further, in described step 30, after described cooler cools down, the temperature of the described raw material of output is less than
70 degree.
Further, in described step 40, described raw material digestion time in described grog storehouse is at least 4 hours.
The Gypsum Fibrosum preparata of the present invention, it is possible to extend the presetting period at 1 ' 45 second to 1 ' 55 second so that the ingredient station of plasterboard,
The slip presetting period extends to the 20-25 second, improves slip flowing sexual state, without the most floating at stripper plate leading portion slip accumulation
Block produces, and product examination edge bubble percent defective can be down to 2% by 20%.
Accompanying drawing explanation
Fig. 1 is preparation method flow chart according to an embodiment of the invention.
Detailed description of the invention
The Gypsum Fibrosum preparata that one embodiment of the invention relates to, it is possible to its presetting period is limited in 1 ' 45 second to 1 ' 55 second.Its
Shown in composition and content below embodiment.
Embodiment 1:
Including the β-CaSO that percentage by weight is 65.8%4·1/2H2O and the β-CaSO that percentage by weight is 18.4%4、
And percentage by weight is the CaSO of 0.44%4·2H2O, surplus is impurity.
Embodiment 2:
Including the β-CaSO that percentage by weight is 68.6%4·1/2H2O and the β-CaSO that percentage by weight is 17.5%4、
And percentage by weight is the CaSO of 0.30%4·2H2O, surplus is impurity.
Embodiment 3:
Including the β-CaSO that percentage by weight is 67.2%4·1/2H2O and the β-CaSO that percentage by weight is 16.6%4、
And percentage by weight is the CaSO of 0.35%4·2H2O, surplus is impurity.
Embodiment 4:
Including the β-CaSO that percentage by weight is 66.8%4·1/2H2O and the β-CaSO that percentage by weight is 18%4, with
And percentage by weight is the CaSO of 0.35%4·2H2O, surplus is impurity.
Embodiment 5:
Including the β-CaSO that percentage by weight is 67.8%4·1/2H2O and the β-CaSO that percentage by weight is 17%4, with
And percentage by weight is the CaSO of 0.4%4·2H2O, surplus is impurity.
The preparation method of the Gypsum Fibrosum preparata that one embodiment of the invention relates to, comprises the steps:
Step 10, raw material and heat smoke being simultaneously fed into beater, raw material is dried by heat smoke while being broken up, logical
Cross the temperature controlling heat smoke, make the content of each composition in raw material meet preassigned.
In this step, raw material is Gypsum Fibrosum or desulfurated plaster, and its moisture content is generally 10%, under this condition, controls
The temperature of heat smoke is 167 DEG C-169 DEG C, so that raw material to carry out calcining drying.
In raw material, the preassigned of each composition is: β-CaSO4·1/2H2The percentage by weight of O accounts for 65.8%～68.6%,
β-CaSO4Percentage by weight account for 16.6%～18.4%, CaSO4·2H2When the percentage by weight of O accounts for 0.30%～0.44%
(surplus is impurity), stops the heating to raw material.
In raw material, the preassigned of each composition can also be: β-CaSO4·1/2H2The percentage by weight of O account for 66.8%～
67.8%, β-CaSO4Percentage by weight account for 17%～18%, CaSO4·2H2The percentage by weight of O accounts for 0.35%～0.4%
Time (surplus is impurity), stop drying to raw material.
The acquisition of above-mentioned parameter, can obtain by measuring in real time.
Raw material after step 20, drying is re-fed into ball mill grinding after cottrell dedusting.
Cottrell and ball mill in this step can use equipment of the prior art, dust removing effects and grinding mark
Standard is also consistent with standard when making plasterboard in prior art.
Raw material after step 30, grinding is sent into cooler and is cooled down by preset temperature.
In this step, preset temperature needs to ensure that the final material temperature discharged is less than 70 DEG C.Concrete cooling method
It can be cold wind cooling.
The ageing of grog storehouse sent into by raw material after step 40, cooling, after default ageing, obtains final products.
In this step, this raw material digestion time in grog storehouse is at least not less than 4 hours.
The Gypsum Fibrosum preparata obtained after above-mentioned steps processes, it is possible to extend the presetting period at 1 ' 45 second to 1 ' 55 second so that
The ingredient station slip presetting period extends to the 20-25 second, and slip flowing sexual state is improved, at stripper plate leading portion slip accumulation
Producing without obvious floating block, product examination edge bubble percent defective is down to 2% by 20%.
So far, although those skilled in the art will appreciate that the multiple of the most detailed present invention of illustrate and describing show
Example embodiment, but, without departing from the spirit and scope of the present invention, still can be direct according to present disclosure
Determine or derive other variations or modifications of many meeting the principle of the invention.Therefore, the scope of the present invention is it is understood that and recognize
It is set to and covers other variations or modifications all these.
Claims (8)
1. a Gypsum Fibrosum preparata, wherein,
Containing β-CaSO4·1/2 H2The percentage by weight of O is 65.8%～68.6%, β-CaSO4Percentage by weight be
16.6%～18.4%, CaSO4·2H2The percentage by weight of O is 0.30%～0.44%, and surplus is impurity.
Gypsum Fibrosum preparata the most according to claim 1, wherein,
Described β-CaSO4·1/2 H2The percentage by weight of O is 66.8%～67.8%, β-CaSO4Percentage by weight be 17%
～18%, CaSO4·2H2The percentage by weight of O is 0.35%～0.4%, and surplus is impurity.
3., according to a preparation method for the Gypsum Fibrosum preparata according to any one of claim 1-2, comprise the steps:
Step 10, raw material and heat smoke being simultaneously fed into beater, raw material is dried by heat smoke while being broken up, by control
Heat the temperature of flue gas, make the content of each composition in raw material meet preassigned；
Raw material after step 20, drying is re-fed into ball mill grinding after cottrell dedusting；
Raw material after step 30, grinding is sent into cooler and is cooled down by preset temperature；
The ageing of grog storehouse sent into by raw material after step 40, cooling, after default ageing, obtains final products.
Preparation method the most according to claim 3, wherein,
In described step 10, the moisture content of described raw material is 10%, and the temperature of described heat smoke is 167 DEG C-169 DEG C.
Preparation method the most according to claim 3, wherein,
In described step 10, in described raw material, the content of each composition meets preassigned and refers to: β-CaSO in raw material4·1/2
H2The percentage by weight of O is 65.8%～68.6%, β-CaSO4Percentage by weight be 16.6%～18.4%, CaSO4·
2H2The percentage by weight of O is 0.30%～0.44%, and surplus is impurity.
Preparation method the most according to claim 3, wherein,
In described step 10, in described raw material, the content of each composition meets preassigned and refers to: β-CaSO in raw material4·1/2
H2The percentage by weight of O is 66.8%～67.8%, β-CaSO4Percentage by weight be 17%～18%, CaSO4·2H2O's
Percentage by weight is 0.35%～0.4%, and surplus is impurity.
Preparation method the most according to claim 3, wherein,
In described step 30, after described cooler cools down, the temperature of the described raw material of output is less than 70 degree.
Preparation method the most according to claim 3, wherein,
In described step 40, described raw material digestion time in described grog storehouse is at least 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525647.5A CN106186755B (en) | 2016-07-05 | 2016-07-05 | Plaster of paris and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525647.5A CN106186755B (en) | 2016-07-05 | 2016-07-05 | Plaster of paris and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106186755A true CN106186755A (en) | 2016-12-07 |
| CN106186755B CN106186755B (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610525647.5A Active CN106186755B (en) | 2016-07-05 | 2016-07-05 | Plaster of paris and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056108A (en) * | 2017-05-09 | 2017-08-18 | 宁波北新建材有限公司 | A kind of land plaster cooling conveying and accelerated ageing equipment |
| CN111229105A (en) * | 2020-02-12 | 2020-06-05 | 淮南北新建材有限公司 | Mix quick-witted foaming homogenization system |
| CN112223524A (en) * | 2020-09-08 | 2021-01-15 | 淮南北新建材有限公司 | Production method capable of improving shearing force of gypsum plasterboard |
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2016
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| CN101781097A (en) * | 2009-01-16 | 2010-07-21 | 北新集团建材股份有限公司 | Airflow desulphurization gypsum calcination system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056108A (en) * | 2017-05-09 | 2017-08-18 | 宁波北新建材有限公司 | A kind of land plaster cooling conveying and accelerated ageing equipment |
| CN111229105A (en) * | 2020-02-12 | 2020-06-05 | 淮南北新建材有限公司 | Mix quick-witted foaming homogenization system |
| CN112223524A (en) * | 2020-09-08 | 2021-01-15 | 淮南北新建材有限公司 | Production method capable of improving shearing force of gypsum plasterboard |
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| CN106186755B (en) | 2018-09-11 |
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