CN104725009A - Modified phosphor-gypsum synthetic wood plate material and preparation method thereof - Google Patents

Modified phosphor-gypsum synthetic wood plate material and preparation method thereof Download PDF

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Publication number
CN104725009A
CN104725009A CN201510104399.2A CN201510104399A CN104725009A CN 104725009 A CN104725009 A CN 104725009A CN 201510104399 A CN201510104399 A CN 201510104399A CN 104725009 A CN104725009 A CN 104725009A
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phosphogypsum
parts
temperature
base material
nitro
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CN104725009B (en
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向前勇
杨永彬
杨步雷
王伟
刘小成
胡新菊
李泽钢
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Guizhou Kailin Group Co Ltd
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Guizhou Kailin Group Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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Abstract

The invention discloses a modified phosphor-gypsum synthetic wood plate material and a preparation method thereof. The modified phosphor-gypsum synthetic wood plate material is prepared from the following components in parts by weight: 30-50 parts of phosphor-gypsum, 8-12 parts of coal dust, 6-10 parts of cement, 0.5-3 parts of fiber, 12-20 parts of yellow phosphorus slag and 1-4 parts of quick lime. By adopting the phosphor-gypsum as a main raw material to prepare the modified phosphor-gypsum synthetic wood plate material, the method disclosed by the invention can be used for improving the situation that the phosphor-gypsum is stacked like a mountain and having a great significance for protecting environment and realizing continuous development. Moreover, the produced modified phosphor-gypsum synthetic wood plate material has the advantages of being light, good in waterproofness and fireproofness, high in compressive strength, high in weather resistance and the like and can be widely used as indoor and outdoor decorative materials.

Description

A kind of modified ardealite wood-like sheet and preparation method thereof
Technical field
The present invention relates to building material technical field, specifically, relate to a kind of modified ardealite wood-like sheet and preparation method thereof.
Background technology
In production process of phosphoric acid, often produce one ton of P 2o 5by-product five tons of phosphogypsums, the every by-product phosphogypsum every year of medium-sized phosphoric acid production enterprise is about 3,500,000 tons.So many phosphogypsum not only needs a larger cinder yard, but also can cause pollution of waterhead.At present, the most frequently used phosphogypsum treatment process has following four kinds:
First method: phosphoric acid cream is used for backfill pit.According to statistics, when not adopting phosphogypsum to backfill mine working, mine working filling cost accounts for 1/3 of mining, and attal accounts for 80% of filling cost, fill mine working with phosphogypsum, fill cost and account for 1/5 of mining cost, not only saved filling cost, and improve utilization of three wastes rate, decrease environmental pollution.But, due to factors such as phosphogypsum jelling agent casting resin viscosity is high, sedimentation fast, condensation is fast, many, the easy pluggings of fine particle, difficult cleanings, at present, conventional method adopts mixture workshop to lead to long-distance Automobile Transportation to mining area, Filling Station is set up in hole, ore deposit nearby, completes filling by pump delivery to flow processs such as roadways.Automobile Transportation generally has the distance of 30 km from ardealite storage yard to Filling Station, and major part is sky way.Though the car of transport phosphogypsum is common double-bridge vehicle without the car of the easy airborne dust of sealing, fortune phosphogypsum jelling agent is that tank car has sealing but vehicle body length drives the larger Road transport of existence and traffic safety hidden danger on sky way, and phosphogypsum jelling agent warehouse-in forklift is had bad luck, is sieved and be filled with airborne dust and noise, all there is larger safety and pollution hidden trouble to environment with slurry, personnel, equipment.Adopt pipeline transportation, Filling Station is selected unreasonable because of its phosphogypsum and phosphogypsum jelling agent ratio and conduit slope, camber, material design, frequent generation blocking pipe, cause the equipment safety operation hidden danger such as equipment superpressure, motor overload and cannot clean after line clogging and only have destructive dismounting, pipeline waste is comparatively large, cost is higher, continuous production is low, equipment and personnel exist larger safety in production and run hidden danger.
Second method: by the agent of phosphogypsum production Flocculated Cement.The crystal habit of phosphogypsum is identical with the plaster of paris, for prismatic or cylindricality plate crystal, chemical composition and plaster of paris composition basic simlarity, but due to containing solubility Vanadium Pentoxide in FLAKES, phosphoric acid salt, soluble fluoride, insoluble Vanadium Pentoxide in FLAKES and organic impurity etc., the hydration time of cement can be extended, reduce early strength and extend time of coagulation, therefore phosphogypsum directly can not be used as the retardant of cement.Phosphogypsum is needed to process, method conventional is at present through art breading such as washing, pre-treatment, drying and calcinings by phosphogypsum, it is low that this method obtains cement setting retarder cost, but by the long flow path of producing cement retarder through phosphogypsum, facility investment is large, and still inevitably containing Vanadium Pentoxide in FLAKES and fluorochemical in the flocculation agent produced, make the hydration time of cement and time of coagulation longer.
The third method: by phosphogypsum sulphur ammonium and calcium carbonate, the method utilizes ammonia and carbonic acid gas that phosphogypsum is changed into sulphur ammonium and calcium carbonate, and the specification of quality of the method to phosphogypsum is higher, and Production Flow Chart is long, and investment is large.
4th kind of method: phosphogypsum is used for improve alkaline soil.Containing Vanadium Pentoxide in FLAKES in phosphogypsum, cause phosphogypsum aobvious acid, its pH value is 1.5 ~ 4.5, can be used to the alkalescence in sweetening of the soil, and the compositions such as the phosphorus contained in phosphogypsum, iron, magnesium, silicon, zinc, sulphur and the calcium nutritive element that to be plant-growth necessary.
Above-mentioned several method has promoted the technical progress of China's phosphogypsum resource utilization, but above-mentioned technology fails to utilize phosphogypsum fully, and fundamentally can not solve the phosphogypsum present situation that pile up like a mountain.Therefore, there is people by phosphogypsum as the raw material preparing modified ardealite wood-like sheet, by the process phosphogypsum that this approach can be a large amount of, and can preferably phosphogypsum be fully utilized.At present, usually after phosphogypsum being mixed with a small amount of cement, paper pulp, fiber reinforced material etc., phosphogypsum fiberboard is made again after pressurization, due to phosphogypsum itself, not have gelling, water content high and containing characteristics such as plurality of impurities, the performance such as wear resistance, weathering resistance, ultimate compression strength of the phosphogypsum modification phosphogypsum wood-like sheet adopting the method to produce is on the low side, is difficult to the service requirements reaching building and ornament materials.The patent application that be used for phosphogypsum to prepare modified ardealite wood-like sheet has a lot, such as, patent CN101219881 discloses a kind of phosphogypsum composite material, it is for main raw material with phosphogypsum and urea-formaldehyde resin, be aided with resol, nut-shell, polyacrylamide, flyash, after above-mentioned raw materials mix and blend, then through extrusion molding and get final product, manufacture craft is simple.The patent No. is ZL200810233755.0, denomination of invention is " a kind of modified ardealite wood-like sheet utilizing industrial residue to produce ", it is with parts by weight, after phosphogypsum 10 ~ 40 parts, 5 ~ 15 parts, lime, cement 15 ~ 28 parts, water glass 0.02 ~ 0.05 part, water reducer 0.01 ~ 0.05 part, retardant 0 ~ 0.004 part, hardening accelerator 0 ~ 0.005 part and defoamer 0 ~ 0.008 part are mixed, be that 4:10 adds water and stirs according to ratio of water to material, then be poured in mould shaping, natural air drying.It has the advantage that manufacturing process is simple, production cost is low, have certain heat insulating effect.By phosphogypsum for the production of modified ardealite wood-like sheet, a kind of formula of research is simple, and production technique is simple, and produces the building products of good combination property, has significant economic implications.
Summary of the invention
In view of this, the object of this invention is to provide a kind of formula rationally, the simple modified ardealite wood-like sheet of preparation technology and preparation method thereof, to solve the existing phosphogypsum present situation that pile up like a mountain, recycling for phosphogypsum finds new approach, thus obtains larger economic benefit and social benefit.
The present inventor is by long-term research and constantly test, and finally develop formula of the present invention and preparation technology, the present invention solves the problems of the technologies described above particular by following technical scheme:
A kind of modified ardealite wood-like sheet, with parts by weight, is prepared from by following raw material: phosphogypsum 30 ~ 50 parts, 8 ~ 12 parts, flyash, cement 6 ~ 10 parts, fiber 0.5 ~ 3 part, yellow phosphorus furnace slag 12 ~ 20 parts and unslaked lime 1 ~ 4 part.
Preferably, be prepared from by phosphogypsum 35 ~ 45 parts, 9 ~ 11 parts, flyash, cement 7 ~ 9 parts, fiber 1 ~ 2 part, yellow phosphorus furnace slag 14 ~ 18 parts and unslaked lime 2 ~ 3 parts.
More preferably, be prepared from by phosphogypsum 40 parts, 10 parts, flyash, cement 8 parts, fiber 1.5 parts, yellow phosphorus furnace slag 16 parts and unslaked lime 2.5 parts.
Described raw material also comprises polymethylmethacrylate 0.1 ~ 3 part, calcium silicofluoride 10 ~ 13 parts, perfluoroalkoxy resin 0.1 ~ 1 part and bamboo charcoal 2 ~ 6 parts.
In described phosphogypsum, the content of phosphogypsum dihydrate is more than 85%.
The content of described phosphogypsum dihydrate be more than 85% phosphogypsum prepared by following methods and obtain: existing phosphogypsum is dried in the drying machine of 200 ~ 240 DEG C to moisture content be less than 10%, then send in Vertical Mill device and complete phosphogypsum Granular composite, being ground to fineness is 30 ~ 40 orders, phosphogypsum and water are joined in stirrer, liquid-solid ratio is made to be (25 ~ 30): 100, after stirring 0.5 ~ 1h, leave standstill 3 ~ 4h, remove floating superincumbent organic impurity, then calcium oxide is added, the weight ratio of calcium oxide and phosphogypsum is (3 ~ 4): 100, stir reflection 2 ~ 3h at the temperature of 40 ~ 60 DEG C after, crossed 40 ~ 60 mesh sieves, screen underflow is the phosphogypsum that phosphogypsum dihydrate content is more than 85%.
The preparation method of described modified ardealite wood-like sheet, comprises the following steps:
(1) yellow phosphorus furnace slag ball milling at 60 ~ 70 DEG C of temperature is become 80 ~ 100 object fine powders, obtain pulverized slag;
(2) by phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime stirring reaction 3 ~ 4h at the temperature of 40 ~ 50 DEG C, mixture is obtained;
(3) by mixture nature ripening 16 ~ 24 days;
(4), after the water adding mixture weight 10 ~ 15% in the mixture after ageing stirs, be poured in mould, obtain shaping after phosphogypsum base material;
(5) phosphogypsum base material is placed in curing room maintenance process 15 ~ 19h that pressure is 0.3MPa, vapor temperature is 128 ~ 132 DEG C;
(6) the phosphogypsum base material after maintenance process is slowly dried at the temperature of 30 ~ 40 DEG C to moisture content be 3 ~ 5%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 0.5 ~ 2mm, then nitro wood grain priming paint is sprayed, thickness is 0.5 ~ 1mm, drying treatment 16 ~ 19h at the temperature of 40 ~ 50 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.5 ~ 2mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 12 ~ 16h is dried again by 50 ~ 60 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 6 ~ 8min at the temperature of 90 ~ 100 DEG C, the temperature of 30 ~ 50 DEG C oven dry is adopted to be 4 ~ 6% to moisture content afterwards again.
In described unslaked lime, calcium oxide content is more than 55%.
In described step (1), yellow phosphorus furnace slag ball milling at 65 DEG C of temperature is become 80 object fine powders, obtain pulverized slag.
In described step (2), by phosphogypsum, flyash, fiber, pulverized slag and unslaked lime stirring reaction 3.5h at the temperature of 45 DEG C, obtain mixture.
In described step (5), phosphogypsum base material is placed in the curing room maintenance process 17h that pressure is 0.3MPa, vapor temperature is 130 DEG C.
In described step (6), phosphogypsum base material after maintenance process is slowly dried at the temperature of 35 DEG C to moisture content be 4%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 17h at the temperature of 45 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.7mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 14h is dried again by 55 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 95 DEG C, the temperature of 40 DEG C oven dry is adopted to be 5% to moisture content afterwards again.
Beneficial effect of the present invention is:
1. the present invention adopts phosphogypsum to be that main raw material prepares modified ardealite wood-like sheet, solves the phosphogypsum present situation that pile up like a mountain, to protection of the environment, realizes Sustainable development significant.Meanwhile, other raw material sources are extensive and cheap, make the production cost of this modified ardealite wood-like sheet lower.
2. find through research, Soluble matter content in phosphogypsum is higher, the solidifiability of phosphogypsum is poorer, the present invention is by processing existing phosphogypsum, phosphogypsum is dried at a certain temperature to moisture content be less than 10%, send in Vertical Mill device and complete phosphogypsum Granular composite, grinding, then phosphogypsum and water are joined in stirrer and stir, then leave standstill, floating superincumbent organic impurity can be removed, then after adding calcium oxide stirring reflection for some time, crossed 40 ~ 60 mesh sieves, screen underflow is the phosphogypsum mainly become as phosphogypsum dihydrate, screen overflow is the Vanadium Pentoxide in FLAKES of calcium oxide and solubility and the product of fluorochemical reaction, with this by solubility Vanadium Pentoxide in FLAKES in phosphogypsum and fluorochemical removing, substantially increase the solidifiability of phosphogypsum, enhance the over-all properties of phosphogypsum.
3. carry out ripening by after unslaked lime, phosphogypsum, flyash, cement, pulverized slag and blending in of fibers, eliminate the acidity of phosphogypsum, reduce the soluble substance in phosphogypsum, enhance the solidifiability of phosphogypsum.Shorten digestion time, phosphorus slag powder is carried out hydration reaction and is generated primary product ettringite crystal, can improve intensity and the water tolerance of modified ardealite wood-like sheet significantly.
4. compared with traditional High Temperature High Pressure maintenance, by adopting, pressure is 0.3MPa, vapor temperature is that 128 ~ 132 DEG C of curing conditions carry out maintenance to modified ardealite wood-like sheet in the present invention, significantly improve quality and the product qualified rate of this modified ardealite wood-like sheet, and energy consumption is low, production efficiency is high, invests little.Meanwhile, adopt this kind of maintenance process, significantly reduce the shrinking percentage of base material in dry environment and the rate of expansion in soaked environment, enhance the ultimate compression strength of base material, extend the work-ing life of base material.
5. preparation method of the present invention is simple, easy to operate.And the modified ardealite wood-like sheet produced has the advantages such as lightweight, waterproof fireproofing performance is good, ultimate compression strength is high, weathering resistance is strong, can be widely used as the finishing material of indoor and outdoor.
Embodiment
Conveniently those skilled in the art will recognize that the present invention will be further described below in conjunction with embodiment.Embodiment is only illustrating this invention, is not limitation of the invention, and the step not doing in embodiment to illustrate is all prior arts, is not described in detail at this.
Phosphogypsum of the present invention is from Xifeng Heavy Calcium Factory, Kailin Group. Guizhou, and its total phosphorous is 1.62%, and free-water is 12.33%, and calcium oxide is 31.22%, and silicon-dioxide is 3.31%, and sulfur trioxide content is 40.02%.
Yellow phosphorus furnace slag of the present invention comes from Guizhou and opens phosphorylcholine group Xifeng Lin Ye company, and the content of its silicon-dioxide is 37.60%, and calcium oxide content is 51.12%, and phosphorus pentoxide content is 2.12%, and the content of aluminium sesquioxide is 2.24%.
Lime of the present invention is commercially available, and the content of its calcium oxide is more than 55%.
Embodiment one
Raw material:
Phosphogypsum 30kg, flyash 8kg, cement 6kg, fiber 0.5kg, yellow phosphorus furnace slag 12kg and unslaked lime 1kg.
Preparation method:
Yellow phosphorus furnace slag ball milling at 60 DEG C of temperature is become 80 object fine powders, obtain pulverized slag, by phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 3h at the temperature of 40 DEG C, by the mixture nature ripening 16 days obtained, after the water adding mixture weight 10% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 19h in the curing room of 128 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 30 DEG C to moisture content be 3%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 0.5mm, then nitro wood grain priming paint is sprayed, thickness is 0.5mm, drying treatment 16h at the temperature of 40 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.5mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 16h is dried again by 50 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 8min at the temperature of 90 DEG C, the temperature of 30 DEG C oven dry is adopted to be 6% to moisture content afterwards again.
In described unslaked lime, calcium oxide content is more than 55%.
Embodiment two
Raw material:
Phosphogypsum 50kg, flyash 12kg, cement 10kg, fiber 3kg, yellow phosphorus furnace slag 18kg and unslaked lime 4kg.
Preparation method:
Yellow phosphorus furnace slag ball milling at 70 DEG C of temperature is become 100 object fine powders, obtain pulverized slag, by phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 4h at the temperature of 50 DEG C, by the mixture nature ripening 24 days obtained, after the water adding mixture weight 15% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 15h in the curing room of 132 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 40 DEG C to moisture content be 5%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 2mm, then nitro wood grain priming paint is sprayed, thickness is 1mm, drying treatment 16h at the temperature of 50 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.5mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 16h is dried again by 60 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 8min at the temperature of 100 DEG C, the temperature of 50 DEG C oven dry is adopted to be 4% to moisture content afterwards again.
In described unslaked lime, calcium oxide content is more than 55%.
Embodiment three
Raw material:
Phosphogypsum 35kg, flyash 9kg, cement 7kg, fiber 1kg, yellow phosphorus furnace slag 14kg and unslaked lime 2kg.
Preparation method:
Yellow phosphorus furnace slag ball milling at 62 DEG C of temperature is become 80 object fine powders, obtain pulverized slag, by phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 4h at the temperature of 43 DEG C, by the mixture nature ripening 18 days obtained, after the water adding mixture weight 11% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 16h in the curing room of 129 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 33 DEG C to moisture content be 4%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1.5mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 17h at the temperature of 42 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.6mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 13h is dried again by 52 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 92 DEG C, the temperature of 35 DEG C oven dry is adopted to be 6% to moisture content afterwards again.
In described unslaked lime, calcium oxide content is more than 55%.
Embodiment four
Raw material:
Phosphogypsum 45kg, flyash 11kg, cement 9kg, fiber 2kg, yellow phosphorus furnace slag 18kg and unslaked lime 3kg.
Preparation method:
Yellow phosphorus furnace slag ball milling at 66 DEG C of temperature is become 100 object fine powders, obtain pulverized slag, by phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 4h at the temperature of 48 DEG C, by the mixture nature ripening 22 days obtained, after the water adding mixture weight 14% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 18h in the curing room of 131 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 38 DEG C to moisture content be 5%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1.5mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 18h at the temperature of 48 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.8mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 15h is dried again by 59 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 98 DEG C, the temperature of 45 DEG C oven dry is adopted to be 5% to moisture content afterwards again.
In described unslaked lime, calcium oxide content is more than 55%.
Embodiment five
Raw material:
Phosphogypsum 40kg, flyash 10kg, cement 8kg, fiber 1.5kg, yellow phosphorus furnace slag 16kg and unslaked lime 2.5kg.
Preparation method:
Yellow phosphorus furnace slag ball milling at 65 DEG C of temperature is become 80 object fine powders, obtain pulverized slag, by phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 3.5h at the temperature of 45 DEG C, by the mixture nature ripening 19 days obtained, after the water adding mixture weight 12% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 17h in the curing room of 130 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 35 DEG C to moisture content be 4%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 17h at the temperature of 45 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.7mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 14h is dried again by 55 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 95 DEG C, the temperature of 40 DEG C oven dry is adopted to be 5% to moisture content afterwards again.
In described unslaked lime, calcium oxide content is more than 55%.
Embodiment six
Raw material:
Phosphogypsum 40kg, flyash 10kg, polymethylmethacrylate 0.1kg, calcium silicofluoride 10kg, perfluoroalkoxy resin 0.1kg, bamboo charcoal 2kg, cement 8kg, fiber 1.5kg, yellow phosphorus furnace slag 16kg and unslaked lime 2.5kg.
Preparation method:
Phosphogypsum is dried in the drying machine of 200 DEG C to moisture content be 10%, then completing phosphogypsum Granular composite, be ground to fineness in feeding Vertical Mill device is 30 orders, phosphogypsum and water are joined in stirrer, liquid-solid ratio is made to be 25:100, after stirring 0.5h, leave standstill 3h, remove floating superincumbent organic impurity, then calcium oxide is added, the weight ratio of calcium oxide and phosphogypsum is 3:100, stir reflection 3h at the temperature of 60 DEG C after, crossed 40 mesh sieves, screen underflow is the phosphogypsum that phosphogypsum dihydrate content is 85%.Yellow phosphorus furnace slag ball milling at 65 DEG C of temperature is become 80 object fine powders, obtain pulverized slag, by polymethylmethacrylate, perfluoroalkoxy resin, calcium silicofluoride and bamboo charcoal powder are broken to after fineness is 80 order fine powders, by this fine powder and phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 3.5h at the temperature of 45 DEG C, by the mixture nature ripening 19 days obtained, after the water adding mixture weight 12% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 17h in the curing room of 130 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 35 DEG C to moisture content be 4%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 17h at the temperature of 45 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.7mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 14h is dried again by 55 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 95 DEG C, the temperature of 40 DEG C oven dry is adopted to be 5% to moisture content afterwards again.A small amount of polymethylmethacrylate is added in phosphogypsum, be conducive to the intensity of the wood-like sheet increasing preparation, calcium silicofluoride is added in phosphogypsum, effectively can strengthen the solidification of phosphogypsum, add intensity and fastness to rubbing that perfluoroalkoxy resin is conducive to strengthening materials for wall, add a small amount of bamboo charcoal, be conducive to the fastness to rubbing of wood-like sheet.
Embodiment seven
Raw material:
Phosphogypsum 40kg, polymethylmethacrylate 1kg, calcium silicofluoride 12kg, perfluoroalkoxy resin 0.6kg, bamboo charcoal 4kg, flyash 10kg, cement 8kg, fiber 1.5kg, yellow phosphorus furnace slag 16kg and unslaked lime 2.5kg.
Preparation method:
Phosphogypsum is dried in the drying machine of 220 DEG C to moisture content be 6%, then completing phosphogypsum Granular composite, be ground to fineness in feeding Vertical Mill device is 40 orders, phosphogypsum and water are joined in stirrer, liquid-solid ratio is made to be 28:100, after stirring 0.6h, leave standstill 4h, remove floating superincumbent organic impurity, then add calcium oxide, the weight ratio of calcium oxide and phosphogypsum is 3.5:100, stir reflection 2.5h at the temperature of 50 DEG C after, crossed 60 mesh sieves, screen underflow is the phosphogypsum that phosphogypsum dihydrate content is 87%.Yellow phosphorus furnace slag ball milling at 65 DEG C of temperature is become 80 object fine powders, by polymethylmethacrylate, perfluoroalkoxy resin, calcium silicofluoride and bamboo charcoal powder are broken to after fineness is 80 order fine powders, by this fine powder and phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 3.5h at the temperature of 45 DEG C, by the mixture nature ripening 19 days obtained, after the water adding mixture weight 12% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 17h in the curing room of 130 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 35 DEG C to moisture content be 4%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 17h at the temperature of 45 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.7mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 14h is dried again by 55 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 95 DEG C, the temperature of 40 DEG C oven dry is adopted to be 5% to moisture content afterwards again.A small amount of polymethylmethacrylate is added in phosphogypsum, be conducive to the intensity of the wood-like sheet increasing preparation, calcium silicofluoride is added in phosphogypsum, effectively can strengthen the solidification of phosphogypsum, add intensity and fastness to rubbing that perfluoroalkoxy resin is conducive to strengthening materials for wall, add a small amount of bamboo charcoal, be conducive to the fastness to rubbing of wood-like sheet.
Embodiment eight
Raw material:
Phosphogypsum 45kg, flyash 11kg, polymethylmethacrylate 3kg, calcium silicofluoride 13kg, bamboo charcoal 6kg, cement 9kg, fiber 2kg, yellow phosphorus furnace slag 18kg and unslaked lime 3kg.
Preparation method:
Phosphogypsum is dried in the drying machine of 240 DEG C to moisture content be 10%, then completing phosphogypsum Granular composite, be ground to fineness in feeding Vertical Mill device is 40 orders, phosphogypsum and water are joined in stirrer, liquid-solid ratio is made to be 30:100, after stirring 1h, leave standstill 4h, remove floating superincumbent organic impurity, then calcium oxide is added, the weight ratio of calcium oxide and phosphogypsum is 4:100, stir reflection 3h at the temperature of 60 DEG C after, crossed 60 mesh sieves, screen underflow is the phosphogypsum that phosphogypsum dihydrate content is 85%.Yellow phosphorus furnace slag ball milling at 66 DEG C of temperature is become 100 object fine powders, obtain pulverized slag, by polymethylmethacrylate, calcium silicofluoride and bamboo charcoal powder are broken to after fineness is 80 order fine powders, by this fine powder and phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime is stirring reaction 4h at the temperature of 48 DEG C, by the mixture nature ripening 22 days obtained, after the water adding mixture weight 14% in the mixture after ageing stirs, be poured in mould, obtain after the demoulding shaping after phosphogypsum base material, it is 0.3MPa that phosphogypsum base material is sent into pressure, vapor temperature is maintenance process 18h in the curing room of 131 DEG C, phosphogypsum base material after maintenance process is slowly dried at the temperature of 38 DEG C to moisture content be 5%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1.5mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 18h at the temperature of 48 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.8mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 15h is dried again by 59 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 98 DEG C, the temperature of 45 DEG C oven dry is adopted to be 5% to moisture content afterwards again.
Test one:
Randomly draw modified ardealite wood-like sheet prepared by embodiment one to embodiment five, first test specimen is carried out high temperature ~ trickle and circulate 80 times, each 6h.Adopt the time of one hour that surface of test piece temperature is risen to 70 DEG C, be 15% by the humid control of test specimen within this period, then constant temperature keeps two hours, controls the homogeneity of air themperature and surface of test piece temperature; Then trickle one hour, trickle temperature is 15 DEG C, and trickle is wanted evenly; Leave standstill after two hours, heating ~ freeze cycle 20 times, each 24h.Adopt and surface of test piece temperature was risen to 50 DEG C in two hours, keep constant temperature six hours, control the homogeneity of air themperature and surface of test piece temperature, then utilize the time of four hours that the temperature of surface of test piece is slowly down to subzero 20 DEG C, and keep constant temperature 12 hours.Test-results: after above-mentioned process, test specimen is all without efflorescence and peeling.Therefore, the weathering resistance of above-mentioned test specimen is stronger.
Test two
By phosphogypsum, flyash, cement, fiber, yellow phosphorus furnace slag and unslaked lime are sent to stirrer for mixing with the weight ratio of 40:10:8:1.5:16:2.5, then natural ripening 20 days, after water material after ripening being added mixture weight 12% stirs, be poured in mould, obtain shaping after length and be widely 200mm phosphogypsum base material, this phosphogypsum base material is carried out maintenance under different curing conditions, again the base material after maintenance is carried out drying or bubble process, the length variations situation of base material after recording processing, result is as following table:
Table 1
Table 2
Table 3
Table 1 is dry and the Swelling and contraction situation of phosphogypsum base material under soaked cycling condition, as can be seen from the table, under curing condition, the expansion of phosphogypsum base material and shrinkage value are minimum, and expansion under 0.3MPa, the curing condition of 130 DEG C and shrinkage value be only second to normal pressure, 100 DEG C.Table 2 is expansion and the situation of contraction of phosphogypsum base material under drying conditions, and as can be seen from the table, under 0.3MPa, the curing condition of 130 DEG C, on the whole in swelling state, the swell value of phosphogypsum base material and shrinkage value are minimum.Table 3 is expansion and the situation of contraction of phosphogypsum base material under long-term soaked condition, and as can be seen from the table, it is on the whole in inflationary spiral, and under 0.3MPa, 130 DEG C of curing conditions, the inflationary spiral of phosphogypsum base material entirety is minimum.Can reach a conclusion thus, be modified ardealite wood-like sheet prepared by raw material for employing phosphogypsum, yellow phosphorus furnace slag and unslaked lime, and the curing condition of its best is 0.3MPa, the temperature of 130 DEG C.
Test three
Proportioning: 1, phosphogypsum 30kg, flyash 8kg, cement 6kg, fiber 0.5kg, yellow phosphorus furnace slag 12kg and unslaked lime 1kg; 2, phosphogypsum 50kg, flyash 12kg, cement 10kg, fiber 3kg, yellow phosphorus furnace slag 18kg and unslaked lime 4kg; 3, phosphogypsum 35kg, flyash 9kg, cement 7kg, fiber 1kg, yellow phosphorus furnace slag 14kg and unslaked lime 2kg; 4, phosphogypsum 45kg, flyash 11kg, cement 9kg, fiber 2kg, yellow phosphorus furnace slag 18kg and unslaked lime 3kg; 5, phosphogypsum 40kg, flyash 10kg, cement 8kg, fiber 1.5kg, yellow phosphorus furnace slag 16kg and unslaked lime 2.5kg.
Preparation method: adopt following working method to process the raw material of above-mentioned different ratio: by phosphogypsum, yellow phosphorus furnace slag and unslaked lime are sent to stirrer for mixing, then natural ripening 24 days, after water material after ripening being added mixture weight 12% stirs, be poured in mould, obtain shaping after length and be widely 200mm floor tile, pressure is adopted to be 0.3MPa this floor tile, vapor temperature is maintenance 24h under the environment of 90 DEG C, the temperature oven dry again floor tile being adopted 50 ~ 60 DEG C is less than 6% to moisture content, the ultimate compression strength result detecting the floor tile sample obtained is as follows:
Table 4
Numbering Weight/㎏ Load area/㎜ 2 Resistance to compression force value/kN Ultimate compression strength/MPa
1 2.377 7200 236.6 32.9
2 2.403 7200 225.4 31.3
3 2.386 7200 231.8 32.2
4 2.390 7200 236.9 32.9
5 2.400 7200 259.9 36.1
As can be seen from Table 4, adopt the floor tile ultimate compression strength of formula preparation of the present invention all higher, especially the floor tile ultimate compression strength that processes of the formula of the 5th group is the highest.Therefore, the formula in the invention process five is optimum formula of the present invention.
To sum up, adopt modified ardealite wood-like sheet prepared by formula of the present invention and preparation method, there is the advantages such as waterproof fireproofing performance is good, ultimate compression strength is high, weathering resistance is strong, be suitable for promoting the use of.And raw material sources is extensive, and cost is lower, has larger economic benefit.
Contriver emphasizes at this: the above, it is only better example of the present invention, not any pro forma restriction is done to the present invention, anyly do not depart from technical solution of the present invention content, the any simple modification done above example according to technical spirit of the present invention, coversion material equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (10)

1. a modified ardealite wood-like sheet, is characterized in that, with parts by weight, is prepared from by following raw material: phosphogypsum 30 ~ 50 parts, 8 ~ 12 parts, flyash, cement 6 ~ 10 parts, fiber 0.5 ~ 3 part, yellow phosphorus furnace slag 12 ~ 20 parts and unslaked lime 1 ~ 4 part.
2. modified ardealite wood-like sheet as claimed in claim 1, it is characterized in that, with parts by weight, be prepared from by following raw material: phosphogypsum 35 ~ 45 parts, 9 ~ 11 parts, flyash, cement 7 ~ 9 parts, fiber 1 ~ 2 part, yellow phosphorus furnace slag 14 ~ 18 parts and unslaked lime 2 ~ 3 parts.
3. modified ardealite wood-like sheet as claimed in claim 1, is characterized in that, with parts by weight, be prepared from by following raw material: phosphogypsum 40 parts, 10 parts, flyash, cement 8 parts, fiber 1.5 parts, yellow phosphorus furnace slag 16 parts and unslaked lime 2.5 parts.
4. the modified ardealite wood-like sheet as described in claims 1 to 3 any one, is characterized in that, described raw material also comprises polymethylmethacrylate 0.1 ~ 3 part, calcium silicofluoride 10 ~ 13 parts, perfluoroalkoxy resin 0.1 ~ 1 part and bamboo charcoal 2 ~ 6 parts.
5. the preparation method of the modified ardealite wood-like sheet as described in claims 1 to 3 any one, is characterized in that, comprise the following steps:
(1) yellow phosphorus furnace slag ball milling at 60 ~ 70 DEG C of temperature is become 80 ~ 100 object fine powders, obtain pulverized slag;
(2) by phosphogypsum, flyash, cement, fiber, pulverized slag and unslaked lime stirring reaction 3 ~ 4h at the temperature of 40 ~ 50 DEG C, mixture is obtained;
(3) by mixture nature ripening 16 ~ 24 days;
(4), after the water adding mixture weight 10 ~ 15% in the mixture after ageing stirs, be poured in mould, obtain shaping after phosphogypsum base material;
(5) phosphogypsum base material is placed in curing room maintenance process 15 ~ 19h that pressure is 0.3MPa, vapor temperature is 128 ~ 132 DEG C;
(6) the phosphogypsum base material after maintenance process is slowly dried at the temperature of 30 ~ 40 DEG C to moisture content be 3 ~ 5%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 0.5 ~ 2mm, then nitro wood grain priming paint is sprayed, thickness is 0.5 ~ 1mm, drying treatment 16 ~ 19h at the temperature of 40 ~ 50 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.5 ~ 2mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 12 ~ 16h is dried again by 50 ~ 60 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 6 ~ 8min at the temperature of 90 ~ 100 DEG C, the temperature of 30 ~ 50 DEG C oven dry is adopted to be 4 ~ 6% to moisture content afterwards again.
6. the preparation method of modified ardealite wood-like sheet as claimed in claim 5, it is characterized in that, in described unslaked lime, calcium oxide content is more than 55%.
7. the preparation method of modified ardealite wood-like sheet as claimed in claim 5, is characterized in that, in described step (1), yellow phosphorus furnace slag ball milling at 65 DEG C of temperature is become 80 object fine powders, obtains pulverized slag.
8. the preparation method of modified ardealite wood-like sheet as claimed in claim 5, it is characterized in that, in described step (2), by phosphogypsum, flyash, fiber, pulverized slag and unslaked lime stirring reaction 3.5h at the temperature of 45 DEG C, obtain mixture.
9. the preparation method of modified ardealite wood-like sheet as claimed in claim 5, is characterized in that, in described step (5), phosphogypsum base material is placed in the curing room maintenance process 17h that pressure is 0.3MPa, vapor temperature is 130 DEG C.
10. the preparation method of modified ardealite wood-like sheet as claimed in claim 5, it is characterized in that, in described step (6), phosphogypsum base material after maintenance process is slowly dried at the temperature of 35 DEG C to moisture content be 4%, then adopt 240# sand paper sand milling smooth, its planeness is made to be 1mm, then nitro wood grain priming paint is sprayed, thickness is 0.8mm, drying treatment 17h at the temperature of 45 DEG C, then the clear priming paint of nitro is sprayed again, thickness is 1.7mm, make the clear priming paint of nitro after base material shows nature levelling, spread a clear priming paint of spraying nitro, 14h is dried again by 55 DEG C of temperature, then nitro wood grain finish paint is sprayed, again by base material baking and curing 7min at the temperature of 95 DEG C, the temperature of 40 DEG C oven dry is adopted to be 5% to moisture content afterwards again.
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CN111620640A (en) * 2019-04-04 2020-09-04 北新集团建材股份有限公司 Machine-sprayed light-weight bottom layer plastering gypsum and preparation method thereof
CN111875331A (en) * 2020-07-30 2020-11-03 四川绵筑新材料有限公司 High-imitation wood gypsum base plate and preparation method thereof
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CN115504750A (en) * 2022-09-29 2022-12-23 广东达益新材料有限公司 Decorative plate with surface coating cured by ultraviolet light and preparation process thereof

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CN108407410A (en) * 2018-03-08 2018-08-17 四川泰兴装饰工程有限责任公司 A kind of glass fibre reinforced gypsum board imitation wood composite plate and preparation method thereof
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CN111620640A (en) * 2019-04-04 2020-09-04 北新集团建材股份有限公司 Machine-sprayed light-weight bottom layer plastering gypsum and preparation method thereof
CN111875331A (en) * 2020-07-30 2020-11-03 四川绵筑新材料有限公司 High-imitation wood gypsum base plate and preparation method thereof
CN114854231A (en) * 2021-06-10 2022-08-05 武汉盼云晴环保科技有限公司 Modified phosphogypsum and preparation method thereof
CN115504750A (en) * 2022-09-29 2022-12-23 广东达益新材料有限公司 Decorative plate with surface coating cured by ultraviolet light and preparation process thereof
CN115504750B (en) * 2022-09-29 2023-05-05 广东达益新材料有限公司 Decorative plate with ultraviolet light solidified surface coating and preparation process thereof

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