CN102248579B - Method for producing desulfurization gypsum powder decorative gypsum plate - Google Patents
Method for producing desulfurization gypsum powder decorative gypsum plate Download PDFInfo
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- CN102248579B CN102248579B CN 201010175092 CN201010175092A CN102248579B CN 102248579 B CN102248579 B CN 102248579B CN 201010175092 CN201010175092 CN 201010175092 CN 201010175092 A CN201010175092 A CN 201010175092A CN 102248579 B CN102248579 B CN 102248579B
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- slurry
- gypsum
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- plasterboard
- sizing agent
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a method for producing a desulfurization gypsum powder decorative gypsum plate. The method comprises the following steps of: mixing 2,500 to 2,700 weight parts of desulfurization gypsum powder which is subjected to calcination dehydration treatment, 290 to 310 weight parts of perlite, 25 to 35 weight parts of glass fiber, 90 to 110 weight parts of adhesive, 75 to 85 weight parts of whitening agent, 1,750 to 1,950 weight parts of water and 0.7 to 0.9 weight part of toughening agent, and uniformly stirring the raw materials to form a sizing agent; injecting the sizing agent into a bottom die of a totally-closed gypsum plate forming mold; vibrating the bottom die fully filled with the sizing agent by using a slope type vibration platform to remove air contained in the sizing agent; covering a cover mold; further vibrating by using a double-frequency low-amplitude vibration rolling forming machine to remove bubbles in the sizing agent, and performing roll forming; and finally curing a gypsum plate blank subjected to roll forming on a conveying belt of a production line, condensing, demoulding and air-drying to form a finished gypsum plate. By the method, production cost can be greatly reduced, and the performance of a produced gypsum plate product reaches or surpasses national quality standards.
Description
Technical field
The present invention relates to decorated gypsum board, particularly method for producing desulfurization gypsum powder decorative gypsum plate.
Background technology
Along with the attention of the Chinese government to the coal fired power plant flue gas desulfurization environmental practice, from 2003, newly-built or built coal-burning power plant is required progressively to install flue gas desulfur device, by 2010, China will have the coal fired power generation unit of 4.6 hundred million kilowatts that flue gas desulfur device is installed, and wherein 88% flue gas desulfur device is employing lime stone one gypsum wet flue gas desulfurizing system (being WFGD); According to the sulfur content of China electricity coal, therefore after 2010, the byproduct that will discharge nearly hundred million tons of wet desulphurizations every year is desulfurated plaster one by one.
The output of China's plaster of paris in 2007 is more than 5,000 ten thousand tons (wherein 3,500 ten thousand tons are used for cement retarder, and other is converted into semi-hydrated gypsum powder or Thistle board gypsum block etc.); So namely use desulfurated plaster to replace all natural gypsum, still may have desulfurated plaster and the ardealite of several ten million tons to utilize.This shows, if new purposes is not innovated, opened up to the treatment technology of desulfurated plaster, comprehensively fully utilize, must cause secondary pollution.
Production development along with decorated gypsum board, its range of application also constantly enlarges, must be to the raw material of decorated gypsum board---the demand of the plaster of paris is increasing, and the output of the plaster of paris is limited, and also there is significant limitation in the place of production, causes the production area of decorated gypsum board generally all away from the consumption area, must cause the increase of production cost, limited simultaneously this formaldehyde that do not contain, made by full-natural material, harmless nontoxic green building material---applying of plaster board.
The Main Ingredients and Appearance of desulfurated plaster is calcium sulphate dihydrate, and purity is high, and ingredient stability is "dead", has gelling property through the desulfurated plaster after calcination processing, and hydration and hardening body crystalline texture is tightr, has certain intensity.Utilize desulfurated plaster to produce plaster board, can significantly reduce the yield of the plaster of paris, be conducive to energy savings, save the soil, and for the waste disposal after means of flue gas desulfurization of power plant breaks a new path, be conducive to reduce the discharge capacity of sulfur dioxide, protection of the environment.But adopt existing technology, the plaster board that utilizes desulfurated plaster to make, its performance does not reach instructions for use.
Summary of the invention
Technical problem to be solved by this invention is can not be fully utilized for the existing a large amount of desulfurated plasters of output of forcing, with the situation of contaminated environment; And existing plaster board raw material minimizing, the predicament that separate with area of consumption the grown place provides a kind of coal-burning power plant's discarded object that utilizes---and desulfurated plaster is produced the production method of desulfurization gypsum powder decorative gypsum plate.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of method for producing desulfurization gypsum powder decorative gypsum plate, it step that comprises is: the desulfurization gypsum powder 2500-2700 part of at first being got by weight calcined dehydration processing by automation gypsum slurry mixer, perlite 290-310 part, glass fibre 25-35 part, adhesive 90-110 part, brightening agent 75-85 part, water 1750-1950 part, flexibilizer 0.7-0.9 part, and above-mentioned each raw material mixing and stirring is formed slurry; Then the slurry that this is stirred injects and lies in the bed die of the totally-enclosed plasterboard mould on production line, and this bed die of filling slurry is removed contained air in slurry through the vibration of ramp type shaking platform; Then cover the cover mold of totally-enclosed plasterboard mould, more further vibrate bubble and the roll forming of removing in slurry through the double-frequency low-amplitude vibration rolling shaper again; The plasterboard stock of this roll forming at last is through solidifying on line conveyor, condense and through the demoulding, the air-dry plasterboard finished product that namely forms.
Because desulfurization gypsum powder is generally khaki, green white, thereby also added in the present invention brightening agent, to improve the color of finished product.
This glass fibre generally adopts the glass fibre of long 20mm, makes like this resistance to fracture of the plasterboard of producing significantly improve.
Adopted perlite in the present invention, apparent density is light, thermal conductivity factor is low, chemical stability is good, the serviceability temperature scope is wide, wettability power is little because perlite has, and the characteristics such as nontoxic, tasteless, fire prevention, sound-absorbing, so the plasterboard of producing is heat insulation, sound insulation, lightweight.
Because the granular size of desulfurated plaster is comparatively average, its zonation is very narrow, high fineness (more than 200 orders), particle mainly concentrate between 30-60pm, grating is worse than the land plaster of the plaster of paris after levigate far away, adding desulfurated plaster itself is again fragile material, and therefore the desulfurated plaster particle is tiny and combination is tight in order to make, and improves simultaneously the fragility of desulfurated plaster, added flexibilizer in the present invention, the compression strength of the plaster board of producing is improved.
Compared with prior art, the beneficial effect that has of the present invention is:
1, the present invention utilizes trade waste---desulfurated plaster after calcined dehydration is processed together with perlite as Binder Materials, add again a certain amount of glass fibre, adhesive, water, flexibilizer and brightening agent, make plaster board through oblique wave formula shaking platform and double-frequency low-amplitude vibration rolling shaper, properties of product meet or exceed state quality standard, have the character such as lightweight, heat insulation, sound insulation, intensity be high, specious, industrial residue was utilized in a large number, saved again a large amount of plasters of paris.
2, owing to adopting desulfurated plaster to make raw material, not only its raw material are originated extensively, and all parts of the country have the place of large power plant that desulfurization gypsum powder is arranged, and are not subjected to the restriction of orefield distance, and transport of materials is taken less; And desulfurization gypsum powder cost ratio mineral gypsum powder price is low, general mineral gypsum powder is per ton more than 360 yuan, middle-grade more than 600 yuan, high-grade more than 1000 yuan one ton, and between the price 180-200 unit of desulfurization gypsum powder, thereby the production cost of plaster board is significantly reduced, this environmental protection, the green building material that pollution-free, purity is high can further be promoted the use of.
3, the desulfurated plaster powder particles is thinner than general natural minerals land plaster, and the decorated gypsum board surface of producing is more smooth, attractive in appearance.
4, desulfurization gypsum powder and natural minerals land plaster relatively, impurity still less, composition is more simple, performance is more stable, does not need often change formula in manufacturing process, has also further reduced production cost.
5, the present invention uses ramp type shaking platform and double-frequency low-amplitude vibration rolling moulding process, and the packing of plasterboard material is increased, between various materials in conjunction with tightr and reach the requirement of anti-folding.Simultaneously, the present invention adds brightening agent in formula, makes the color of desulfurized plaster board better; Add flexibilizer in formula, improved the fragility of desulfurated plaster, add the composition that increases adhesive, utilize the fold resistance of the desulfurated plaster ornamental hard board that the present invention produces significantly to strengthen and make, its compression strength also significantly improves.
The specific embodiment
Embodiment 1: at first get by weight by automation gypsum slurry mixer 2500 parts of the desulfurization gypsum powders that calcined dehydration processes, 75 parts, brightening agent, 25 parts, the glass fibre of long 20mm, 90 parts, adhesive, 290 parts of perlites, 1750 parts, water, 0.7 part of flexibilizer, and above-mentioned each raw material mixing and stirring is formed slurry; Then the slurry that this is stirred injects and lies in the bed die of the totally-enclosed plasterboard mould on production line, and this bed die of filling slurry is removed contained air in slurry through ramp type shaking platform (open in Chinese utility model patent ZL200720181816.4) vibration; Then cover the cover mold of totally-enclosed plasterboard mould, further vibrate bubble and the roll forming of removing in slurry through double-frequency low-amplitude vibration rolling shaper (open in Chinese utility model patent application 2010201875737) again again, the packing of slurry is increased, between various raw materials in conjunction with tightr and reach the requirement of anti-folding; The plasterboard stock of this roll forming at last is through solidifying on line conveyor, condense and through the demoulding, the air-dry plasterboard finished product that namely forms.
Embodiment 2: at first get by weight by automation gypsum slurry mixer 2600 parts of the desulfurization gypsum powders that calcined dehydration processes, 80 parts, brightening agent, 30 parts, the glass fibre of long 20mm, 100 parts, adhesive, 300 parts of perlites, 1850 parts, water, 0.8 part of flexibilizer, and above-mentioned each raw material mixing and stirring is formed slurry; Then the slurry that this is stirred injects and lies in the bed die of the totally-enclosed plasterboard mould on production line, and this bed die of filling slurry is removed contained air in slurry through ramp type shaking platform (open in Chinese utility model patent ZL200720181816.4) vibration; Then cover the cover mold of totally-enclosed plasterboard mould, further vibrate bubble and the roll forming of removing in slurry through double-frequency low-amplitude vibration rolling shaper (open in Chinese utility model patent application 2010201875737) again again, the packing of slurry is increased, between various raw materials in conjunction with tightr and reach the requirement of anti-folding; The plasterboard stock of this roll forming at last is through solidifying on line conveyor, condense and through the demoulding, the air-dry plasterboard finished product that namely forms.
Embodiment 3: at first get by weight by automation gypsum slurry mixer 2700 parts of the desulfurization gypsum powders that calcined dehydration processes, 85 parts, brightening agent, 35 parts, the glass fibre of long 20mm, 110 parts, adhesive, 310 parts of perlites, 1950 parts, water, 0.9 part of flexibilizer, and above-mentioned each raw material mixing and stirring is formed slurry; Then the slurry that this is stirred injects and lies in the bed die of the totally-enclosed plasterboard mould on production line, and this bed die of filling slurry is removed contained air in slurry through ramp type shaking platform (open in Chinese utility model patent ZL200720181816.4) vibration; Then cover the cover mold of totally-enclosed plasterboard mould, further vibrate bubble and the roll forming of removing in slurry through double-frequency low-amplitude vibration rolling shaper (open in Chinese utility model patent application 2010201875737) again again, the packing of slurry is increased, between various raw materials in conjunction with tightr and reach the requirement of anti-folding; The plasterboard stock of this roll forming at last is through solidifying on line conveyor, condense and through the demoulding, the air-dry plasterboard finished product that namely forms.
The finished product that the various embodiments described above are made is tested and is obtained following data (as table 1):
Table 1:
As seen from the above table, use the mass area ratio of the decorated gypsum board that formula of the present invention and production method produce less; Its moisture content is also much smaller than national standard; But its breaking load is but much larger than national standard.
Claims (2)
1. method for producing desulfurization gypsum powder decorative gypsum plate, it is characterized in that the step that comprises is: the desulfurization gypsum powder 2500-2700 part of at first being got by weight calcined dehydration processing by automation gypsum slurry mixer, perlite 290-310 part, glass fibre 25-35 part, adhesive 90-110 part, brightening agent 75-85 part, water 1750-1950 part, flexibilizer 0.7-0.9 part, and above-mentioned each raw material mixing and stirring is formed slurry; Then the slurry that this is stirred injects and lies in the bed die of the totally-enclosed plasterboard mould on production line, and this bed die of filling slurry is removed contained air in slurry through the vibration of ramp type shaking platform; Then cover the cover mold of totally-enclosed plasterboard mould, more further vibrate bubble and the roll forming of removing in slurry through the double-frequency low-amplitude vibration rolling shaper again; The plasterboard stock of this roll forming at last is through solidifying on line conveyor, condense and through the demoulding, the air-dry plasterboard finished product that namely forms.
2. method for producing desulfurization gypsum powder decorative gypsum plate according to claim 1, is characterized in that, this glass fibre adopts the glass fibre of long 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010175092 CN102248579B (en) | 2010-05-18 | 2010-05-18 | Method for producing desulfurization gypsum powder decorative gypsum plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010175092 CN102248579B (en) | 2010-05-18 | 2010-05-18 | Method for producing desulfurization gypsum powder decorative gypsum plate |
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| Publication Number | Publication Date |
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| CN102248579A CN102248579A (en) | 2011-11-23 |
| CN102248579B true CN102248579B (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010175092 Expired - Fee Related CN102248579B (en) | 2010-05-18 | 2010-05-18 | Method for producing desulfurization gypsum powder decorative gypsum plate |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399394A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | High-strength environment-friendly gypsum board and preparation method thereof |
| CN105541391A (en) * | 2015-12-09 | 2016-05-04 | 文登蓝岛建筑工程有限公司 | Plasterboard prepared from waste papermaking liquid and preparation method of plasterboard |
| CN108947575A (en) * | 2018-07-13 | 2018-12-07 | 贵州紫云月华新材料有限公司 | A kind of heat-insulated plasterboard and its production method |
| CN109049279A (en) * | 2018-07-13 | 2018-12-21 | 贵州紫云月华新材料有限公司 | A kind of production method of sound insulation gypsum plate |
| CN112028587A (en) * | 2020-08-24 | 2020-12-04 | 贵州省公路工程集团有限公司 | Glass fiber reinforced desulfurization building gypsum composite material and preparation method thereof |
| CN115677308A (en) * | 2022-11-10 | 2023-02-03 | 谭政洪 | Material for manufacturing fireproof door core and manufacturing method of fireproof door core |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188087A (en) * | 1997-01-15 | 1998-07-22 | 许兴富 | High strength water-proof gypsum hollow lath |
| CN1803427A (en) * | 2006-01-23 | 2006-07-19 | 山东泰和东新股份有限公司 | Method for producing paper gypsum board using desulfurated gypsum and ardealite |
| CN2915993Y (en) * | 2006-06-09 | 2007-06-27 | 济南大学 | Desulfurized gypsum hollow wall slab |
| CN101549525A (en) * | 2009-05-18 | 2009-10-07 | 赵保生 | Method for producing desulfurized gypsum light partition board |
-
2010
- 2010-05-18 CN CN 201010175092 patent/CN102248579B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188087A (en) * | 1997-01-15 | 1998-07-22 | 许兴富 | High strength water-proof gypsum hollow lath |
| CN1803427A (en) * | 2006-01-23 | 2006-07-19 | 山东泰和东新股份有限公司 | Method for producing paper gypsum board using desulfurated gypsum and ardealite |
| CN2915993Y (en) * | 2006-06-09 | 2007-06-27 | 济南大学 | Desulfurized gypsum hollow wall slab |
| CN101549525A (en) * | 2009-05-18 | 2009-10-07 | 赵保生 | Method for producing desulfurized gypsum light partition board |
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| CN102248579A (en) | 2011-11-23 |
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Granted publication date: 20130619 Termination date: 20140518 |