CN109970376A - A kind of land plaster Product Process for being first aged, grinding afterwards - Google Patents
A kind of land plaster Product Process for being first aged, grinding afterwards Download PDFInfo
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- CN109970376A CN109970376A CN201910311081.XA CN201910311081A CN109970376A CN 109970376 A CN109970376 A CN 109970376A CN 201910311081 A CN201910311081 A CN 201910311081A CN 109970376 A CN109970376 A CN 109970376A
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- land plaster
- aged
- ardealite
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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
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to gypsum preparation technical fields, and in particular to a kind of land plaster Product Process for being first aged, grinding afterwards.The specific scheme is that a kind of land plaster Product Process for being first aged, grinding afterwards, comprising the following steps: after first mixing smashed ardealite and steel slag with flyash, carry out washing ageing；Then reinforcing agent, water-reducing agent and sulfate liquor is added, obtains gypsum mixtures；Retarder, borax and composite fibre are added in gypsum mixtures, and the mixed liquor of carbon fiber and resin is added thereto；It is finally dried, grinds, obtain land plaster.The present invention using be first aged grind afterwards by the way of prepare land plaster, the objectionable impurities in ardealite can be completely removed during ageing, make preparation land plaster have excellent mechanical property；Moreover, whole preparation process is easy to operate, and it is pollution-free, it can be good at the setting time for controlling land plaster.
Description
Technical field
The present invention relates to gypsum preparation technical fields, and in particular to a kind of land plaster Product Process for being first aged, grinding afterwards.
Background technique
Ardealite is the industry byproduct of generation during Wet-process Phosphoric Acid Production, main component CaSO4·2H2O, quality
Score is greater than 80%, is often considered as a kind of industrial residue.Other than calcium sulphate dihydrate, also containing phosphorus, fluorine, alkali gold in ardealite
The impurity such as category, organic matter.During preparing land plaster, if not removing the impurity in ardealite, the stone prepared
Cream powder just will appear the problems such as setting time is too long, intensity is too low, seriously constrain the application of ardealite.Therefore, to phosphorus
Gypsum prepares gypsum for building powder and must just be removed to impurity in ardealite.
And the mode neutralized in existing technology frequently with calcining and lime handles ardealite, removes in ardealite
The impurity such as titanium pigment, fluorine.But the harmful substance in ardealite can not be completely removed using calcination method, moreover, forging
It needs to be heated at high temperature ardealite during burning, this not only increases the cost of burning, and there is also due to calcining unevenness
The problem of even harmful substance caused in ardealite cannot be removed completely.And use lime neutralisation treated ardealite
Can be bad, there is also a small amount of titanium pigments and fluorine not to remove, production indissoluble object reunion asking on the surface of semi-hydrated gypsum crystal
Topic, moreover, the usage amount of lime is very big, be easy to cause shortage of resources.Therefore, it is badly in need of a kind of technique of new production land plaster.
Summary of the invention
The object of the present invention is to provide a kind of first ageing, afterwards the land plaster Product Process ground.
For achieving the above object, the technical scheme adopted by the invention is that:
A kind of land plaster Product Process for being first aged, grinding afterwards, comprising the following steps:
(1), it by ardealite drying, calcining, after being cooled to room temperature, crushes, cross mesh, obtain phosphogypsum powder；Steel slag is dried,
It crushes, cross mesh, obtain steel-making slag powder；
(2), flyash is added in the phosphogypsum powder and steel-making slag powder, and adds water and stirs uniformly, stands, removes supernatant
Liquid repeatedly adds water and stirs, until supernatant is in neutrality, is then allowed to stand ageing, obtains ardealite mixture；
(3), the ardealite mixture is dried to water content is 20~30%, is added in the ardealite mixture
Reinforcing agent and water-reducing agent are uniformly mixed and are placed in still kettle, after the completion of steam pressure, the humidity of reactant adjusted, into reactant
Sulfate liquor is added, after mixing evenly, stands reaction, obtains gypsum mixtures；
(4), retarder, borax and composite fibre are added in the gypsum mixtures, stands after mixing evenly；
(5), it is added to after crushing carbon fiber in resin and carries out ultrasonic disperse, obtain mixed liquor, which is added
It into solution obtained in step (4), is uniformly dispersed, stands；
(6), step (5) resulting solution is put into baking oven and is dried, be put into Muffle furnace and calcined after dry,
Calcining is completed to be cooled to room temperature, and crushes, grinds to get land plaster.
Preferably, in step (1), the ardealite calcination temperature is 130~150 DEG C, and calcination time is 1~2h.
Preferably, in step (2), the mass ratio of the phosphogypsum powder, steel-making slag powder and flyash be 17~19:1~2:1~
2；The time of the ageing is 15~30h.
Preferably, in step (3), the reinforcing agent is q-3 hydrolytic resin, and water-reducing agent is polycarboxylate water-reducer, the phosphorus
The mass ratio of gypsum mixing, reinforcing agent and water-reducing agent is 100:0.7~1:0.1~1.
Preferably, in step (3), the steam pressure time is 1~7h, and steam pressure temperature is 110~180 DEG C.
Preferably, in step (3), the sulfate liquor is sodium sulphate or calcium sulfate, and the temperature for standing reaction is
130~160 DEG C, the time is 1~3h.
Preferably, in step (4), the retarder is cement and citric acid, and the composite fibre is polypropylene fibre, glass
One of glass fiber, brucite fiber and wood pulp waste paper fibre are a variety of.
Preferably, the mass ratio of the gypsum mixtures, cement and citric acid is 100:0.3~0.5:0.1~0.5.
Preferably, in step (5), the resin is epoxy resin or polyester resin, the quality of the carbon fiber and resin
Than for 1:4~5.
Preferably, aging device used in step (2) includes: the stirring for being aged case, being disposed longitudinally in ageing case
Component；The mixing component includes agitating shaft, is set in the transmission cylinder being connected through a screw thread on agitating shaft with agitating shaft, the biography
Dynamic cylinder is fixed by bearing and the ageing box top；Rotate gear is fixed at the top of the transmission cylinder, the agitating shaft is worn
The rotate gear is crossed, motor is provided at the top of the ageing case, is fixed on the motor and is mutually nibbled with the rotate gear
The gear of conjunction；One end that the agitating shaft is located in the ageing case is fixed with blade, and the other end for stretching out the ageing case is solid
Surely there is baffle.
The invention has the following advantages:
1. after the present invention is mixed ardealite with flyash and steel slag, be washed to supernatant as neutrality, going forward side by side
Row reacts steel slag and flyash with the objectionable impurities in ardealite after ageing a period of time, eliminates ardealite well
In the objectionable impurities such as phosphorus, fluorine and organic matter；Moreover, because steel slag and flyash and phosphogypsum powder during mixing
Initial reaction is carried out, so, there will not be the objectionable impurities in phosphogypsum powder in the supernatant of discharge, being expelled directly out will not
It pollutes the environment.Meanwhile by controlling steel-making slag powder, the proportion of flyash and phosphogypsum powder, to control supernatant be discharged
The amount of liquid and the number for adding water to phosphogypsum powder, steel-making slag powder and mixture of fly ash, and then saved water resource and saved
Operating procedure.
2. during the present invention prepares land plaster, by calcining to ardealite, making decomposing ardealite ardealite
And the plaster of paris, and using the gelatification of the plaster of paris, keep it cemented together with ardealite；Meanwhile it introducing in the reaction system
Sulfate ion improves the aquation condensation and mechanical property of land plaster in the environment of sulfate radical.
3. the present invention has been suffered in the reaction system for preparing land plaster first introduces composite fibre, it is dispersed in composite fibre instead
It answers in system, then introduces carbon fiber and resin compound, it is anti-that which is dispersed in the land plaster containing composite fibre
It answers in system, so that composite fibre is crosslinked on the mixture of carbon fiber and resin, preparing carbon fiber and composite fibre
A skeleton is formd in the reaction system of land plaster, resin plays the role of connection, reinforced resin and the mixed interface of fiber
Intensity, and the reaction system of land plaster is enable to combine on the surface；Moreover, because the diameter of fiber is small, large specific surface area,
Can be evenly arranged in entire reaction system, formed supporting network, play bridge linking effect, thus increase land plaster flexural strength and
Compression strength.
4. the present invention using be first aged grind afterwards by the way of prepare land plaster, phosphorus can be completely removed during ageing
Objectionable impurities in gypsum makes the land plaster of preparation have excellent mechanical property；Moreover, whole preparation process is easy to operate,
It is pollution-free, it can be good at the setting time for controlling land plaster.
Detailed description of the invention
Fig. 1 is aging device structural schematic diagram of the present invention；
Fig. 2 is aging device top view of the present invention；
Wherein, be aged case 1, agitating shaft 2, transmission cylinder 3, bearing 4, rotate gear 5, motor 6, gear 7, blade 8, baffle 9,
Water pipe 10, spray head 11, water-main 12, heater strip 13, discharge nozzle 14, sewage pipe 15, filter screen 16, feed hopper 17, feed pipe 18.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Unless otherwise specified, the conventional hand that technological means used in implementation example is well known to those skilled in the art
Section.
The invention discloses a kind of first ageing, afterwards the land plaster Product Process ground, comprising the following steps:
(1), ardealite is dried to water content is 6~7%, and 1~2h is then calcined at 130~150 DEG C；It is cooled to room
Wen Hou crushes ardealite, crosses 40~80 meshes, obtains phosphogypsum powder；It is crushed after steel slag is dried, crosses 40~80 mesh
Sieve, obtains steel-making slag powder.
(2), the phosphogypsum powder and steel-making slag powder are put into charging basket, flyash is added, and added water and stirred uniformly, added water
For amount for after mixing evenly, supernatant covers 10~30cm of phosphogypsum powder, steel-making slag powder and mixture of fly ash plane, stand 10~
After 60min, supernatant is removed；The pH value for detecting supernatant repeatedly add to phosphogypsum powder, steel-making slag powder and mixture of fly ash
Water stirring, until supernatant is in neutrality；It is then allowed to stand ageing, obtains ardealite mixture；The phosphogypsum powder, steel-making slag powder and
The mass ratio of flyash is 17~19:1~2:1~2；The digestion time is 15~30h, during ageing, ardealite
Water appropriate can be added in the reaction system of powder, steel slag and flyash, amount of water is to cover phosphogypsum powder, steel-making slag powder and flyash
Mix 0~3cm of object plane.
(3), the ardealite mixture is dried to water content is 20~30%, is added in the ardealite mixture
Reinforcing agent and water-reducing agent, reinforcing agent and water-reducing agent can be improved the intensity of land plaster；The reinforcing agent is q-3 hydrolytic resin,
Water-reducing agent is polycarboxylate water-reducer, and the enhancing of 0.7~1 parts by weight is separately added into the ardealite mixture of every 100 parts by weight
Agent and 0.1~1 parts by weight water-reducing agent；It is uniformly mixed and is placed in still kettle, the steam pressure time is 1~7h, and steam pressure temperature is
110~180 DEG C, after the completion of steam pressure, the humidity of reactant is adjusted according to the actual situation, as long as the humidity > 5% of reactant,
It is 6% sulfate liquor that mass fraction is added into reactant, the additional amount of sulfate liquor be reactant quality 7~
10%, the sulfate liquor is that sodium sulphate or calcium sulfate stand 1~3h of reaction at 130~160 DEG C, obtain after mixing evenly
Gypsum mixtures.
(4), retarder, borax and composite fibre are added in the gypsum mixtures, stand 0.5 after mixing evenly~
2h；The retarder is cement and citric acid, and the composite fibre is that length is micron-sized staple fiber, and specially polypropylene is fine
One of dimension, glass fibre, brucite fiber and wood pulp waste paper fibre are a variety of；Wherein, the gypsum of every 100 parts by weight
In mixture, the mass ratio of added cement and citric acid is 0.3~0.5:0.1~0.5, and composite fibre is 4~5 parts by weight, and
The product surface that the borax of addition can be such that land plaster makes is more smooth, and can improve its resistance to compression, flexural strength, specific addition side
Method are as follows: be added in gypsum mixtures after mixing borax with water, the mass ratio of gypsum mixtures and borax solution be 1:1~
2, the mixing mass ratio of borax and water is 1~5:95~99.
(5), it is added to after crushing carbon fiber in resin and carries out ultrasonic disperse, obtain mixed liquor, which is added
Into solution obtained in step (4), it is dispersed in mixed liquor obtained by step (4)
Solution in, stand 2~3h；The resin is epoxy resin or polyester resin, and the carbon fiber is micron order staple fiber.It is described
The mass ratio of carbon fiber and resin is 1:4~5, solution obtained in the mixed liquor and step (4) of the carbon fiber and resin
Mass ratio is 2~3:100.
(6), step (5) resulting solution is put into baking oven and is dried, be put into Muffle furnace after dry 120~
2~3h is calcined at 130 DEG C, calcining is completed to be cooled to room temperature, crushes, carry out being ground to 1 μm of partial size < after crushing to get gypsum
Powder.
Embodiment 1
1. the chemical constituent of ardealite used in the present embodiment see the table below shown in 1,
1 ardealite chemical composition of table
| Component | Ca0 | SO3 | SiO2 | Al2O3 | MgO | P2O5 | F | Organic matter | H2O |
| Mass fraction/% | 28.34 | 40.85 | 8.12 | 0.61 | 0.15 | 0.81 | 0.35 | 0.17 | 19.15 |
Ardealite is calcined according to above-mentioned steps (1), under conditions of calcination temperature is 2h, investigates different calcining temperature
The influence to ardealite phase is spent, as a result as shown in table 2 below.As the result is shown: in the case where calcination temperature is greater than 170 DEG C, the plaster of paris
(CaSO4·1/2H2O content) is greater than 70%, and ardealite content is less than 9%；As the temperature rises, the content of ardealite by
It is gradually reduced to 0, the content of the plaster of paris is gradually increased to 75.10%, anhydrite (CaSO4) content gradually rise to 6.2%.It examines
The plaster of paris is considered without cementing properties, the plaster of paris can be added in ardealite, and the gelatification generated using the water imbibition of the plaster of paris is made
Ardealite and the plaster of paris can be good at cemented together.Therefore, select optimal calcination temperature for 130~150 DEG C.
Gypsum phase composition (%) under the different calcination temperatures of table 2
| Calcination temperature/DEG C | CaSO4·2H2O | CaSO4·1/2H2O | CaSO4 |
| 190 | 0 | 75.10 | 6.2 |
| 180 | 2.1 | 72.32 | 4.1 |
| 170 | 8.4 | 70.50 | 2.3 |
| 150 | 14.56 | 64.45 | 0 |
| 130 | 23.25 | 54.23 | 0 |
2. being 130~150 DEG C in calcination temperature, under conditions of calcination time is 2h, the operation of above-mentioned steps (2) is carried out.
It results in waste of resources and increases operational sequence in order to avoid removing excessive supernatant, by controlling containing for steel-making slag powder and flyash
It measures to control the number for adding water, is as a result detailed in shown in the following table 3.As the result is shown: adding after the parameters adjusting processing phosphogypsum powder in group 1
The number of water is minimum, supernatant can be made to be in neutrality after only a water need to being added to be stirred.
The removal effect of the different steel-making slag powders of table 3 and the dosage of flyash to impurity
3. after handling according to above-mentioned group 1 of parameter phosphogypsum powder, investigating digestion time to impurity in phosphogypsum powder
The influence of removal effect, is specifically shown in the following table 4.As the result is shown: digestion time is miscellaneous to the nocuousness in phosphogypsum powder after being greater than 20h
The removal effect of matter is best, it is believed that the SiO in objectionable impurities and steel-making slag powder and flyash in phosphogypsum powder2、Al2O3With
Fe2O3Combination reaction occurs for equal substances, generates fluorophosphate and class silicates substance, along with to mixed supernatant into
It has gone removal, has further eliminated the impurity in phosphogypsum powder；And due to the objectionable impurities in phosphogypsum powder with steel slag
Also reacted during tentatively mixing with flyash, the supernatant being discharged will not pollute the environment.
Removal effect of 4 digestion time of table to impurity
4. carrying out the operation of step (3)~(6) according to above-mentioned group 3 of parameter, land plaster is finally obtained.Investigate the steam pressure time
Influence with temperature to land plaster performance, specifically: under conditions of the steam pressure time is 3h, steam pressure temperature is investigated to final preparation
Each performance of land plaster influence.The test of flexural strength and compression strength: it is surveyed according to method as defined in GB/T17671-1999
Examination, each performance of land plaster are detailed in shown in the following table 5.As the result is shown: in the case where steam pressure temperature is 150 DEG C, gypsum prepared by the present invention
Satisfaction " building gypsum (GB/T9776-2008) " the building gypsum plaster requirement of powder, and there is very high flexural strength and pressure resistance
Degree.
Influence of the 5 steam pressure temperature of table to each performance of land plaster
According to upper table 5, under conditions of steam pressure temperature is 150 DEG C, the steam pressure time is investigated to each performance of land plaster
It influences, as a result see the table below shown in 6.As the result is shown: in the case where the steam pressure time is 4h, land plaster prepared by the present invention has anti-well
Roll over intensity and compression strength.
Influence of the 6 steam pressure time of table to land plaster performance
5. investigating influence of the mass ratio of cement and citric acid to land plaster setting time, it is detailed in shown in the following table 7.As a result it shows
Show: during preparing land plaster, the setting time of land plaster can be adjusted by adjusting the proportion of cement and citric acid.
Influence of the mass ratio of 7 cement of table and citric acid to land plaster setting time
Comparative example 1
Step of the invention (5) are saved, remaining steps and operations condition is identical as the present invention.To prepared by comparative example 1
Land plaster carry out performance detection, as a result see the table below shown in 8.As the result is shown: the carbon fiber being added during land plaster preparation
The mixed solution of peacekeeping resin can effectively increase the properties of land plaster.
8 comparative example 1 of table is compared with the performance of land plaster of the present invention
| Performance indicator | Comparative example 1 | Embodiment 1 |
| 2h flexural strength/Mpa | 6.2 | 8.8 |
| 2h compression strength/Mpa | 25.7 | 37.5 |
| Dry flexural strength/Mpa | 10.6 | 18.9 |
| Dry compression strength/Mpa | 50.69 | 76.1 |
Embodiment 2
With reference to Fig. 1-Fig. 2, the invention also discloses aging devices, comprising: ageing case 1 is disposed longitudinally in ageing case 1
Mixing component；Mixing component includes agitating shaft 2, is set in the transmission cylinder 3 being connected through a screw thread on agitating shaft 2 with agitating shaft 2, is passed
Dynamic cylinder 3 passes through fixed at the top of bearing 4 and ageing case 1.Specifically, 2 outer wall of agitating shaft is equipped with screw thread, it is same on 3 inner wall of transmission cylinder
Sample is equipped with screw thread, agitating shaft 2 and transmission cylinder 3 by screw-driven, and the rotation of transmission cylinder 3 makes agitating shaft 2 be aged in case 1 fortune up and down
It is dynamic.Transmission cylinder 3 is fixed in the inner ring of bearing 4, and the outer ring of bearing 4 is fixed on 1 top of ageing case, enables 3 turns of transmission cylinder
It is dynamic.
The top of transmission cylinder 3 is fixed with rotate gear 5, and agitating shaft 2 passes through rotate gear 5, and the top of ageing case 1 is provided with
Motor 6 is fixed with the gear 7 being meshed with rotate gear 5 on motor 6；One end that agitating shaft 2 is located in ageing case 1 is fixed with
Blade 8, the other end for stretching out ageing case 1 are fixed with baffle 9.It should be understood that the gear 7 on motor 6 rotates, driving rotation
Gear 5 rotates, and rotate gear 5 drives transmission cylinder 3 to rotate, by the screw drive agitating shaft 2 that is arranged on 3 inner wall of transmission cylinder
Underdrive.Baffle 9 is fixed in one end that agitating shaft 2 stretches out ageing case 1 primarily to agitating shaft 2 is avoided to fall into ageing case 1
It is interior.
Several grooves are offered at the top of ageing case 1, water pipe 10 are placed in groove, if the bottom of water pipe 10 is equipped with
Dry spray head 11, spray head 11 pass through the top of ageing case 1, put in the inside of ageing case 1.Specifically, several water pipes 10 are mutual
Connection, and be connected with water-main 12, valve is equipped on water-main 12 by water pump water flowing into water-main 12 makes water flow
By water pipe 10 from spray head 11 to ageing case 1 in spray water.
The side wall and bottom wall for being aged case 1 are cavity, and heater strip 13 is equipped in cavity；It is equipped in the bottom of ageing case 1
Material mouth, discharge nozzle 14 is connected on discharge port, and discharge nozzle 14 is equipped with valve.In the top position in the side wall of ageing case 1, middle part
It is equipped with sewage pipe 15, valve is equipped on sewage pipe 15, the part that sewage pipe 15 puts in ageing case 1 is curved for what Open Side Down
Pipe, and filter screen 16 is equipped in sewage pipe 15.Likewise, being equipped with charging on the top position in the side wall of ageing case 1, middle part
Bucket 17, the bottom of feed hopper 17 are provided with feed pipe 18, and feed pipe 18 is equipped with valve, and extend into ageing case 1.In order to
Situation inside enough observation ageing casees 1, is arranged an observation window (not shown) on the side wall of ageing case 1.
The aging device is combined with land plaster technique of the invention, mainly in the part of step (2) and step (3)
It is used in technique.Specific use process is as follows: phosphogypsum powder, steel-making slag powder and flyash is added in ageing case 1, and passes through water pipe
10 add water into ageing case 1, and water is made to cover the plane of above-mentioned raw materials, at this point, starting motor 6, motor 6 drive transmission cylinder 3 to rotate,
It is moved up and down by controlling the positive and negative rotation of motor 6 to control mixing component, specifically, the distance that mixing component moves up and down is not
It can exceed that the surface of supernatant, to enable blade 8 to be stirred to above-mentioned raw materials always, moreover, because being up and down direction
Stirring, make stirring effect it is more preferable.When needing that supernatant is discharged, motor 6 stops operating, and blade 8 is turned to supernatant
Above sediment in liquid or below supernatant；Supernatant is discharged by sewage pipe 15；In order to keep sewage pipe 15 complete
Supernatant is discharged, the raw material being added can be located at the lower section of 15 entrance of sewage pipe.Certainly, in order to further avoid sewage pipe
15 cannot be completely exhausted out supernatant, can borrow external equipment, such as charging basket, raw material be carried out mixing washing, and supernatant is discharged.
After the completion of supernatant discharge, raw material in ageing case 1 is carried out still aging.After the completion of ageing, to ageing 1 side wall of case
It is powered with the heater strip 13 in bottom wall, so that the raw material completed to ageing is dried；After the completion of drying, reinforcing agent is added
And water-reducing agent, and stirred evenly by mixing component, material is expelled to (steam pressure in next equipment finally by discharge nozzle 14
Kettle).After the completion of material discharge, it can be sprayed water by water pipe 10 into ageing case 1, to be cleaned to ageing case 1.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention
It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements, should all fall into claims of the present invention determine protection scope in.
Claims (10)
1. a kind of land plaster Product Process for being first aged, grinding afterwards, it is characterised in that: the following steps are included:
(1), it by ardealite drying, calcining, after being cooled to room temperature, crushes, cross mesh, obtain phosphogypsum powder；By steel slag drying, powder
Broken, mistake mesh, obtains steel-making slag powder；
(2), flyash is added in the phosphogypsum powder and steel-making slag powder, and adds water and stirs uniformly, stands, removes supernatant, it is more
It is secondary to add water and stir, until supernatant is in neutrality, it is then allowed to stand ageing, obtains ardealite mixture；
(3), the ardealite mixture is dried to water content is 20~30%, and enhancing is added in the ardealite mixture
Agent and water-reducing agent are uniformly mixed and are placed in still kettle, after the completion of steam pressure, adjust the humidity of reactant, be added into reactant
Sulfate liquor stands reaction, obtains gypsum mixtures after mixing evenly；
(4), retarder, borax and composite fibre are added in the gypsum mixtures, stands after mixing evenly；
(5), it is added to after crushing carbon fiber in resin and carries out ultrasonic disperse, obtain mixed liquor, which is added to step
Suddenly it in solution obtained in (4), is uniformly dispersed, stands；
(6), step (5) resulting solution is put into baking oven and is dried, be put into Muffle furnace and calcined after dry, calcined
Completion is cooled to room temperature, and is crushed, is ground to get land plaster.
2. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step (1)
In, the ardealite calcination temperature is 130~150 DEG C, and calcination time is 1~2h.
3. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step (2)
In, the mass ratio of the phosphogypsum powder, steel-making slag powder and flyash is 17~19:1~2:1~2；The time of the ageing be 15~
30h。
4. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step (3)
In, the reinforcing agent is q-3 hydrolytic resin, and water-reducing agent is polycarboxylate water-reducer, the ardealite mixing, reinforcing agent and water-reducing agent
Mass ratio be 100:0.7~1:0.1~1.
5. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step (3)
In, the steam pressure time is 1~7h, and steam pressure temperature is 110~180 DEG C.
6. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step (3)
In, the sulfate liquor is sodium sulphate or calcium sulfate, and the temperature for standing reaction is 130~160 DEG C, and the time is 1~3h.
7. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step (4)
In, the retarder is cement and citric acid, and the composite fibre is polypropylene fibre, glass fibre, brucite fiber and wood
Starch one of waste paper fibre or a variety of.
8. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 7, it is characterised in that: the stone
The mass ratio of cream mixture, cement and citric acid is 100:0.3~0.5:0.1~0.5.
9. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step (5)
In, the resin is epoxy resin or polyester resin, and the mass ratio of the carbon fiber and resin is 1:4~5.
10. a kind of land plaster Product Process for being first aged, grinding afterwards according to claim 1, it is characterised in that: step
(2) aging device used in includes: the mixing component for being aged case (1), being disposed longitudinally in ageing case (1)；The stirring
Component includes agitating shaft (2), is set in the transmission cylinder (3) being connected through a screw thread on agitating shaft (2) with agitating shaft (2), the biography
Dynamic cylinder (3) pass through fixed at the top of bearing (4) and the ageing case (1)；Rotate gear is fixed at the top of the transmission cylinder (3)
(5), the agitating shaft (2) passes through the rotate gear (5), is provided with motor (6), the electricity at the top of the ageing case (1)
The gear (7) being meshed with the rotate gear (5) is fixed on machine (6)；The agitating shaft (2) is located at the ageing case (1)
Interior one end is fixed with blade (8), and the other end for stretching out ageing case (1) is fixed with baffle (9).
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