CN102557719A - Production method of gypsum board - Google Patents

Production method of gypsum board Download PDF

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Publication number
CN102557719A
CN102557719A CN201110438571XA CN201110438571A CN102557719A CN 102557719 A CN102557719 A CN 102557719A CN 201110438571X A CN201110438571X A CN 201110438571XA CN 201110438571 A CN201110438571 A CN 201110438571A CN 102557719 A CN102557719 A CN 102557719A
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CN
China
Prior art keywords
semi
hydrated gypsum
sulfuric acid
plasterboard
working method
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Application number
CN201110438571XA
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Chinese (zh)
Inventor
杨民乐
陈建立
吴彭森
李双庆
苗委然
杨美荣
陈晓丽
李会娟
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HENAN BAILILIAN CHEMICAL CO Ltd
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HENAN BAILILIAN CHEMICAL CO Ltd
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Priority to CN201110438571XA priority Critical patent/CN102557719A/en
Publication of CN102557719A publication Critical patent/CN102557719A/en
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Abstract

The invention discloses a production method of a gypsum board, which comprises the following steps: adding glass fibers, a surfactant, a foaming agent and modified starch into hemihydrate gypsum slurry, uniformly agitating, forming, solidifying, cutting and drying to obtain the gypsum board. A preparation method of the hemihydrate gypsum slurry comprises the following steps: pre-heating sulfuric acid solution, adding a crystal transformation agent and a seed crystal into the sulfuric acid solution, uniformly adding calcium powder into the sulfuric acid solution and controlling the reaction temperature to obtain the hemihydrate gypsum slurry after the end of reaction. Compared with the prior art, the production method has the benefits that the hemihydrate gypsum slurry prepared by industrial waste acid as well as the calcium powder is directly used for the production of the gypsum board, the cost is reduced, the process flow is shortened, the exploitation of natural gypsum is reduced, and the production method has the advantage of low energy consumption.

Description

A kind of working method of plasterboard
Technical field
The present invention relates to a kind of working method of plasterboard.
Background technology
At present; The working method of plasterboard is, the dihydrate gypsum (like phosphogypsum, titanium gypsum, fluorgypsum etc.) of natural dihydrate gypsum or synthetic is pulverized, obtained semi-hydrated gypsum powder behind dry, the calcined dehydration, in semi-hydrated gypsum powder, adds a certain amount of water; Be mixed with the semi-hydrated gypsum slurry; In the semi-hydrated gypsum slurry, add spun glass, tensio-active agent, whipping agent, white glue with vinyl etc. then, after stirring, through moulding solidify, cut-out, drying just obtained plasterboard.The characteristics of this method: dihydrate gypsum need pass through pulverizing, drying, calcining and other processes and be converted into semi-hydrated gypsum, consumes a large amount of electricity, coal homenergic, and the production cycle is long, and production efficiency is low.
Summary of the invention
The objective of the invention is to provide a kind of working method of plasterboard.
In order to achieve the above object, technical scheme of the present invention is: a kind of working method of plasterboard adds spun glass, tensio-active agent, whipping agent, treated starch in the semi-hydrated gypsum slurry; After stirring, through moulding solidify, cut-out, drying, promptly obtain plasterboard; The making method of said semi-hydrated gypsum slurry is: preheating sulfuric acid liquid; Compound modifying agent and crystal seed are added in the sulfuric acid liquid, then the even calcium powder, control reaction temperature of adding in sulfuric acid liquid; Reaction promptly obtains the semi-hydrated gypsum slurry after finishing.
Further, said calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
Further, said compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate, and its consumption is 0.06 of semi-hydrated gypsum expected volume ~ 0.15 ‰.
Further, said crystal seed is a semi-hydrated gypsum, and its consumption is 4 ~ 6% of a semi-hydrated gypsum expected volume.
Further, the temperature of preheating sulfuric acid liquid is 90 ~ 102 ℃.
Further, control reaction temperature is 90 ~ 102 ℃.
Further, the said sulfuric acid liquid mother liquor acid that is Titanium White Production By Sulfuric Acid Process.
Compared with prior art, the present invention utilizes industrial waste acid and calcium powder reaction to obtain the production that the semi-hydrated gypsum slurry directly is used for plasterboard, reduces cost, and shortened process reduce the exploitation of the plaster of paris, and this method has the advantage of less energy-consumption.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1
The mother liquor acid of Titanium White Production By Sulfuric Acid Process is added in the reaction vessel, and preheating also keeps its temperature at 90 ℃, in reaction vessel, adds compound modifying agent and crystal seed then; The compound modifying agent consumption is 0.06 ‰ of a semi-hydrated gypsum expected volume, and the crystal seed add-on is 4% of a semi-hydrated gypsum expected volume, then the even calcium powder that adds in reaction vessel; Control its temperature of reaction at 90 ℃; Reaction promptly obtains the semi-hydrated gypsum slurry after finishing, and in the semi-hydrated gypsum slurry, adds spun glass, tensio-active agent, whipping agent, treated starch then, after stirring; Through moulding solidify, cut-out, drying, promptly obtain plasterboard.
Above-mentioned crystal seed is a semi-hydrated gypsum, and compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate.
Above-mentioned calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
Embodiment 2
The mother liquor acid of Titanium White Production By Sulfuric Acid Process is added in the reaction vessel, and preheating also keeps its temperature at 102 ℃, in reaction vessel, adds compound modifying agent and crystal seed then; The compound modifying agent consumption is 0.15 ‰ of a semi-hydrated gypsum expected volume, and the crystal seed add-on is 6% of a semi-hydrated gypsum expected volume, then the even calcium powder that adds in reaction vessel; Control its temperature of reaction at 102 ℃; Reaction promptly obtains the semi-hydrated gypsum slurry after finishing, and in the semi-hydrated gypsum slurry, adds spun glass, tensio-active agent, whipping agent, treated starch then, after stirring; Through moulding solidify, cut-out, drying, promptly obtain plasterboard.
Above-mentioned crystal seed is a semi-hydrated gypsum, and compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate.
Above-mentioned calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
Embodiment 3
The mother liquor acid of Titanium White Production By Sulfuric Acid Process is added in the reaction vessel, and preheating also keeps its temperature at 102 ℃, in reaction vessel, adds compound modifying agent and crystal seed then; The compound modifying agent consumption is 0.06 ‰ of a semi-hydrated gypsum expected volume, and the crystal seed add-on is 6% of a semi-hydrated gypsum expected volume, then the even calcium powder that adds in reaction vessel; Control its temperature of reaction at 90 ℃; Reaction promptly obtains the semi-hydrated gypsum slurry after finishing, and in the semi-hydrated gypsum slurry, adds spun glass, tensio-active agent, whipping agent, treated starch then, after stirring; Through moulding solidify, cut-out, drying, promptly obtain plasterboard.
Above-mentioned crystal seed is a semi-hydrated gypsum, and compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate.
Above-mentioned calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
Embodiment 4
The mother liquor acid of Titanium White Production By Sulfuric Acid Process is added in the reaction vessel, and preheating also keeps its temperature at 95 ℃, in reaction vessel, adds compound modifying agent and crystal seed then; The compound modifying agent consumption is 0.12 ‰ of a semi-hydrated gypsum expected volume, and the crystal seed add-on is 5% of a semi-hydrated gypsum expected volume, then the even calcium powder that adds in reaction vessel; Control its temperature of reaction at 95 ℃; Reaction promptly obtains the semi-hydrated gypsum slurry after finishing, and in the semi-hydrated gypsum slurry, adds spun glass, tensio-active agent, whipping agent, treated starch then, after stirring; Through moulding solidify, cut-out, drying, promptly obtain plasterboard.
Above-mentioned crystal seed is a semi-hydrated gypsum, and compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate.
Above-mentioned calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
Embodiment 5
The mother liquor acid of Titanium White Production By Sulfuric Acid Process is added in the reaction vessel, and preheating also keeps its temperature at 100 ℃, in reaction vessel, adds compound modifying agent and crystal seed then; The compound modifying agent consumption is 0.08 ‰ of a semi-hydrated gypsum expected volume, and the crystal seed add-on is 5% of a semi-hydrated gypsum expected volume, then the even calcium powder that adds in reaction vessel; Control its temperature of reaction at 100 ℃; Reaction promptly obtains the semi-hydrated gypsum slurry after finishing, and in the semi-hydrated gypsum slurry, adds spun glass, tensio-active agent, whipping agent, treated starch then, after stirring; Through moulding solidify, cut-out, drying, promptly obtain plasterboard.
Above-mentioned crystal seed is a semi-hydrated gypsum, and compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate.
Above-mentioned calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
Embodiment 6
The mother liquor acid of Titanium White Production By Sulfuric Acid Process is added in the reaction vessel, and preheating also keeps its temperature at 92 ℃, in reaction vessel, adds compound modifying agent and crystal seed then; The compound modifying agent consumption is 0.1 ‰ of a semi-hydrated gypsum expected volume, and the crystal seed add-on is 5% of a semi-hydrated gypsum expected volume, then the even calcium powder that adds in reaction vessel; Control its temperature of reaction at 92 ℃; Reaction promptly obtains the semi-hydrated gypsum slurry after finishing, and in the semi-hydrated gypsum slurry, adds spun glass, tensio-active agent, whipping agent, treated starch then, after stirring; Through moulding solidify, cut-out, drying, promptly obtain plasterboard.
Above-mentioned crystal seed is a semi-hydrated gypsum, and compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate.
Above-mentioned calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
All simple distortion of under the situation that does not break away from core of the present invention, making or modification all fall into protection scope of the present invention.

Claims (7)

1. the working method of a plasterboard adds spun glass, tensio-active agent, whipping agent, treated starch in the semi-hydrated gypsum slurry, after stirring; Through moulding solidify, cut-out, drying, promptly obtain plasterboard, it is characterized in that; The making method of said semi-hydrated gypsum slurry is: preheating sulfuric acid liquid is added to compound modifying agent and crystal seed in the sulfuric acid liquid, then the even calcium powder that adds in sulfuric acid liquid; Control reaction temperature, reaction promptly obtains the semi-hydrated gypsum slurry after finishing.
2. the working method of a kind of plasterboard according to claim 1 is characterized in that, said calcium powder is CaO, CaCO 3, Ca (OH) 2In one or more mixtures.
3. the working method of a kind of plasterboard according to claim 1 is characterized in that, said compound modifying agent is one or more mixtures in succsinic acid, palmitinic acid, the Trisodium Citrate, and its consumption is 0.06 of semi-hydrated gypsum expected volume ~ 0.15 ‰.
4. the working method of a kind of plasterboard according to claim 1 is characterized in that, said crystal seed is a semi-hydrated gypsum, and its consumption is 4 ~ 6% of a semi-hydrated gypsum expected volume.
5. the working method of a kind of plasterboard according to claim 1 is characterized in that, the temperature of preheating sulfuric acid liquid is 90 ~ 102 ℃.
6. the working method of a kind of plasterboard according to claim 1 is characterized in that, control reaction temperature is 90 ~ 102 ℃.
7. according to the working method of each described a kind of plasterboard of claim 1 to 6, it is characterized in that said sulfuric acid liquid is the mother liquor acid of Titanium White Production By Sulfuric Acid Process.
CN201110438571XA 2011-12-25 2011-12-25 Production method of gypsum board Pending CN102557719A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105016691A (en) * 2014-04-18 2015-11-04 北新集团建材股份有限公司 Gypsum board and preparation method thereof
CN105555494A (en) * 2013-10-07 2016-05-04 可耐福石膏两合公司 Method for producing a gypsum plasterboard
CN106082908A (en) * 2016-06-08 2016-11-09 泰安市跨海贸易有限公司 A kind of technique reducing Thistle board surface density
CN107226670A (en) * 2017-07-03 2017-10-03 四川锦泓佳建筑装饰工程有限公司 A kind of plasterboard for adjusting humidity
CN109279910A (en) * 2017-07-19 2019-01-29 北新集团建材股份有限公司 A method of preparing plasterboard
CN109320188A (en) * 2018-10-30 2019-02-12 梦牌新材料(宁国)有限公司 A kind of high-strength waterproof plaster board composite material and preparation method
CN110014504A (en) * 2019-04-25 2019-07-16 河北绿洲机械制造集团有限公司 A kind of fibrous plaster imprint process and forming machine
CN111606684A (en) * 2019-09-19 2020-09-01 北新集团建材股份有限公司 Paper-surface gypsum board with antibacterial, mildew-proof and aldehyde-removing functions and preparation method thereof
CN115594477A (en) * 2022-10-13 2023-01-13 广东能源集团科学技术研究院有限公司(Cn) Fireproof gypsum board and manufacturing method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101367658A (en) * 2007-08-15 2009-02-18 北新集团建材股份有限公司 Dampproof flame-proof plaster slab and method of manufacturing the same
CN101550602A (en) * 2009-05-19 2009-10-07 武汉科技大学 CaSO* crystal whisker with desulfurized gypsum as raw material and preparing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101367658A (en) * 2007-08-15 2009-02-18 北新集团建材股份有限公司 Dampproof flame-proof plaster slab and method of manufacturing the same
CN101550602A (en) * 2009-05-19 2009-10-07 武汉科技大学 CaSO* crystal whisker with desulfurized gypsum as raw material and preparing method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10570062B2 (en) 2013-10-07 2020-02-25 Knauf Gips Kg Method for producing a gypsum plasterboard
CN105555494A (en) * 2013-10-07 2016-05-04 可耐福石膏两合公司 Method for producing a gypsum plasterboard
CN105016691A (en) * 2014-04-18 2015-11-04 北新集团建材股份有限公司 Gypsum board and preparation method thereof
CN106082908A (en) * 2016-06-08 2016-11-09 泰安市跨海贸易有限公司 A kind of technique reducing Thistle board surface density
CN107226670A (en) * 2017-07-03 2017-10-03 四川锦泓佳建筑装饰工程有限公司 A kind of plasterboard for adjusting humidity
CN109279910A (en) * 2017-07-19 2019-01-29 北新集团建材股份有限公司 A method of preparing plasterboard
CN109320188B (en) * 2018-10-30 2021-07-06 梦牌新材料(宁国)有限公司 High-strength waterproof gypsum board composite material and preparation method thereof
CN109320188A (en) * 2018-10-30 2019-02-12 梦牌新材料(宁国)有限公司 A kind of high-strength waterproof plaster board composite material and preparation method
CN110014504A (en) * 2019-04-25 2019-07-16 河北绿洲机械制造集团有限公司 A kind of fibrous plaster imprint process and forming machine
CN110014504B (en) * 2019-04-25 2023-11-21 河北绿洲机械制造集团有限公司 Fiber gypsum board embossing process and forming machine
CN111606684A (en) * 2019-09-19 2020-09-01 北新集团建材股份有限公司 Paper-surface gypsum board with antibacterial, mildew-proof and aldehyde-removing functions and preparation method thereof
CN111606684B (en) * 2019-09-19 2021-12-17 北新集团建材股份有限公司 Paper-surface gypsum board with antibacterial, mildew-proof and aldehyde-removing functions and preparation method thereof
CN115594477A (en) * 2022-10-13 2023-01-13 广东能源集团科学技术研究院有限公司(Cn) Fireproof gypsum board and manufacturing method thereof

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Application publication date: 20120711

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