CN106006695A - Preparation method of high-strength composite gypsum micropowder - Google Patents
Preparation method of high-strength composite gypsum micropowder Download PDFInfo
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- CN106006695A CN106006695A CN201610315766.8A CN201610315766A CN106006695A CN 106006695 A CN106006695 A CN 106006695A CN 201610315766 A CN201610315766 A CN 201610315766A CN 106006695 A CN106006695 A CN 106006695A
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- micropowder
- gypsum
- gypsum fibrosum
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
Abstract
The invention relates to the technical field of gypsum modification, in particular to high-strength composite gypsum micropowder and a preparation method thereof. The raw material gypsum is subjected to free water removing and then prepared into 600-mesh or finer gypsum micropowder or superfine gypsum micropowder, so that when the obtained gypsum micropowder is applied to the field of preparation of other products as a modifying agent or a filling agent, strength is high, and the activity of obtained gypsum micropowder products is high; besides, the gypsum micropowder is high in stability and not likely to deteriorate, the compatibility and stirring and mixing uniformity of the gypsum micropowder with other materials are high when the gypsum micropowder serves as a modifying agent or a filling agent, and thus the gypsum micropowder can be applied to preparation of military material products as a modifying agent and/or filling agent; the additional value of application of gypsum is improved, the application field of gypsum is broadened, it is ensured that the industrial by-product gypsum is high in comprehensive utilization rate, the environmental pollution rate of the wet process phosphoric acid industry process is decreased, and the development of the wet process phosphoric acid industry is promoted.
Description
Technical field
The present invention relates to Gypsum Fibrosum technical field of modification, especially a kind of high-strength composite Gypsum Fibrosum micropowder
Preparation method.
Background technology
Gypsum Fibrosum, it is mainly composed of calcium sulfate and hydrate thereof, is widely used in industrial materials
And construction material, as cement retarder, gypsum building products, modelling, medical food
Product additive, gas washing in SA production, various fillers etc..But, the natural gypsum, industry by-product gypsum
Powder fineness only between 100-200 mesh so that can only by the raw material as building field,
Cause, to the natural gypsum, the range of application more limitation of industry by-product gypsum, hindering natural
Gypsum Fibrosum, the extensive application of industry by-product gypsum, reduce comprehensive utilization ratio, and especially industry is secondary
Produce Gypsum Fibrosum, wherein due to containing substantial amounts of impurity so that its comprehensive utilization ratio is relatively low, constrains
The development of phosphoric acid by wet process industry.
In consideration of it, prior art occurs in that the lot of documents comprehensively utilizing Gypsum Fibrosum, as
Number of patent application is " a kind of modified fluorine gypsum powder for brushing gypsum of 2015104925379
Preparation method " its through carry out Gypsum Fibrosum drying pulverize, after calcining pulverization process, then to it
After middle addition modifier treatment, it is prepared as the modified fluorine gypsum powder for brushing gypsum；The most special
" calcination method of a kind of titanium gypsum " of profit Application No. 201410831844.0 its process is to containing
Free water titanium gypsum sends into feed bin, after using 50-60 DEG C to dry and being broken, then is sent to
180-220 DEG C of high-temperature calcination, obtains after crushing grinding, screening, solves tradition titanium gypsum
The dust losing issue of Duan Shaozhong；For another example number of patent application is the " one of 200710013988.5
Liquid phase method produces α-Gypsum Fibrosum powder technique " raw gypsum is ground to form fineness and distribution of particles D50
Dihydrate gypsum powder between 10-100mm, then dihydrate gypsum powder is mixed with water in blending tank
Becoming concentration in the Gypsum slurry of 1395 ± 50g/cm2, heating turns crystalline substance and becomes α-Gypsum Fibrosum powder.
In sum, during processing for Gypsum Fibrosum comprehensive utilization in prior art, it is most
It is to use high-temperature calcination to process, and adds modifying agent or carry out the further process of other techniques,
The performance making the Gypsum Fibrosum powder of acquisition is more excellent；, the general knowledge according to those skilled in the art can
To learn: the either natural gypsum, industry by-product gypsum, its main component is all sulphuric acid
Calcium, it easily forms water of crystallization with water, and then when carrying out calcination processing, from calcium sulphate dihydrate
During anhydrous gypsum, the removing principle of water of crystallization is after temperature is higher than 100 DEG C, its
Start the eliminating that water of crystallization occurs, and be divided into the elimination phase of 3 water of crystallization: 105～180 DEG C,
First discharge 1 hydrone, immediately discharge half hydrone, be changed into bassanite
Ca[SO4]·0.5H2O, also referred to as Gypsum Fibrosum preparata or semi-hydrated gypsum.200～220 DEG C, discharge remaining
Half hydrone, is changed into type III anhydrite Ca [SO4]·εH2O (0.06 ＜ ε ＜ 0.11).About
350 DEG C, it is changed into II type Gypsum Fibrosum Ca [SO4].I type anhydrite it is further transformed to when 1120 DEG C.
Melt temperature 1450 DEG C.
As can be seen here, in the preparation process of Gypsum Fibrosum powder in prior art, its purpose is to
Water of crystallization in raw gypsum is removed, reduces the crystal water content in raw gypsum,
Make the moisture in the Gypsum Fibrosum powder obtained relatively low, improve the properties of Gypsum Fibrosum powder；Except this
Outside, it also realizes purifying Gypsum Fibrosum powder through the mode etc. of conversion crystallization, improves Gypsum Fibrosum
The purpose of the quality of powder；But it is in processing procedure, due to its use high-temperature calcination process and
Convert crystallization treatment so that the energy consumption of the Gypsum Fibrosum powder of acquisition is higher, and technique is complex, cost
Relatively big, particularly with converting in crystallization, it is difficult to process on a large scale raw material
Gypsum Fibrosum so that the comprehensive utilization ratio of industry by-product gypsum is relatively low；In high-temperature process, it needs
Want substantial amounts of energy consumption that raw gypsum is carried out calcination processing, ground so that energy consumption is relatively
Greatly, and after high-temperature calcination, its substantial amounts of water of crystallization removing so that last pulverizing,
Easily absorb the moisture in environment, cause the less stable of product, and then be difficult to extensively should
With, reduce added value and the comprehensive utilization ratio of Gypsum Fibrosum powder.
Summary of the invention
In order to solve above-mentioned technical problem present in prior art, the present invention provides a kind of high-strength
Degree composite gypsum micropowder preparation method.
Its concrete technical scheme is: use after raw gypsum is sloughed Free water, by it
It is prepared as the micropowder of mesh number >=600 mesh.The raw gypsum used is the natural gypsum or industrial by-product
Gypsum Fibrosum or both mixture.The technical scheme containing industry by-product gypsum is used at these
In, its be primarily related at least one in ardealite, desulfurated plaster, fluorgypsum etc. or
Its mixture each other.Time prepared by the gypsum raw material using two water states, it is to use
The temperature of 40-90 DEG C is by the moisture drying and processing on its surface so that when gypsum raw material processes constant weight,
It is ground into powder；In order to make the energy consumption in processing procedure and process cycle be controlled
System, what it also carried out using dry to the temperature optimum of raw gypsum be 60 DEG C.Use α-stone
When at least one in cream, β-Gypsum Fibrosum, anhydrous gypsum etc. processes as raw gypsum,
Directly it is sent in grinder process grind into powder.In the process being ground process
In, its grinder used is high pressure abrasive machine.It is by the natural gypsum sloughing Free water
And/or industry by-product gypsum uses the temperature of 40-90 DEG C to carry out drying to constant weight.
In addition to that mentioned above, the present invention uses and adds additivated mode so that the micropowder of preparation
For activity micropowder.The additive added is mainly active additive.Some scheme is added
Additive is to block outside moisture and micropowder bonded, it is to avoid formed freely in micropowder
Water, carries the material of high-activity micro powder heat stability, such as stearic acid, stearate, paraffin,
One or more any mixture in barium cadmium stabilizer, barium zinc stabilizer.By additive
Join after drying to the gypsum raw material of constant weight, be mixed and grind to form micropowder.Use is hard
Fat acid salt, it is at least one in calcium stearate, magnesium stearate, and in addition, it can also
Enough use other stearate, such as zinc stearate etc..After sloughing Free water, it uses
Crush, sieve process step after, it is thus achieved that product.The sieve used is carrying out the mistake processed of sieving
Cheng Zhong, when its product fineness reaches 600 mesh, its sieving rate is that 93-97% is optimum；Some side
In case, being prepared into the micropowder of 1200 mesh, its sieving rate is that 93-96% is optimum；Some side
In case, being prepared into the micropowder of 3000 mesh, its sieving rate is that 93-96% is optimum.Some side
In case, when being prepared into the micropowder of 600-1200 mesh, it is Gypsum Fibrosum micropowder；It is prepared as at it
During more than 1200 mesh product, it is ultra-fine Gypsum Fibrosum micropowder.The addition of the additive added is
Account for the 0.01-0.1% of Gypsum Fibrosum inventory, the when of optimum, be chosen as the quality of material calculating of 0.05%
Add.
The Gypsum Fibrosum micropowder of the present invention is applied in goods as modifying agent, as paint, plastics,
As modifying agent in the products such as rubber, show that this product has higher activity；In addition,
In some application scheme, also it is applied to military project material product as modifying agent；Also simultaneously
Using this product as inserts in some scheme, it is applied to the preparation in various product, as made
Cement retarder, gypsum building products, modelling, it has higher intensity and activity,
Performance and the quality of the product of preparation can be improved.
After raw gypsum is carried out Free water removing by the present invention, it is being prepared into more than 600 mesh
After the Gypsum Fibrosum micropowder of fineness or ultra-fine Gypsum Fibrosum micropowder so that the Gypsum Fibrosum micropowder of acquisition is applied to it
When his product preparation field is as modifying agent or filler, it is possible to make intensity high, and obtain
The activity of the Gypsum Fibrosum micropowder product obtained is stronger；In addition, the stability of Gypsum Fibrosum micropowder is relatively strong,
Be unlikely to deteriorate, when improving it as modifying agent or inserts, the compatibility with unclassified stores and
The performance being uniformly mixed is more excellent so that it can be applied to the preparation of military project material product
Middle as modifying agent and/or inserts；Improve the added value of gypsum application, expand Gypsum Fibrosum
Application, it is ensured that industry by-product gypsum comprehensive utilization is higher, reduces phosphoric acid by wet process industry
During environmental pollution rate, promoted the development of phosphoric acid by wet process industry.
The present invention on the basis of the above, in order to improve Gypsum Fibrosum micropowder product stability, really
Protect Gypsum Fibrosum micropowder product during preserving, or in application process, the stability of its quality
More excellent, the additive the most also carried out adds so that additive can block stone
Cream powder and the hydrone effect in environment, it is ensured that the activity of Gypsum Fibrosum powder is more excellent, and then can be a large amount of
Be applied to prepare such as PVC in as filler, as in paint preparation as modifying agent；Remove
Outside this, additionally it is possible to be applied in military project material product as modifying agent and/or filler etc..
During above-mentioned interpolation additive, its addition is to account for raw materials quality
0.01-0.5%.Or above-mentioned additive uses adjuvant add after substituting, or with auxiliary
Material mixing is added, and wherein the addition of adjuvant accounts for the 1-20% of raw materials quality.
Described adjuvant is in shrend Phosphorus Slag, shrend slag, water-quenched blast-furnace slag, quick lime
Plant or several.
The Gypsum Fibrosum micropowder that embodiment 1, embodiment 2, embodiment 3 are prepared by the researcher of the present invention
It is applied to goods and is prepared as test specimen, as experimental group 1, experimental group 2, experimental group 3；To implement
After the raw gypsum that example 1-3 uses processes according to traditional calcining, grinding steps, applied
In the preparation of construction material, it is prepared as test specimen, as a control group 1, matched group 2, matched group
3；
Test specimen obtained above is placed in steam-pressure maintaining device, enters according to traditional curing condition
Row steam press maintenance processes 2h, then detects its rupture strength, in addition, and this researcher
Also during being prepared as Gypsum Fibrosum powder, Gypsum Fibrosum powder is entered according to the Ginding process of embodiment 1-3
After row grinds, then carried out natural environment stands process of sieving after 1-3 days, and each to it
The sieving rate planted under granularity detects, and its result is as shown in table 1:
Table 1
Shown by the data in table 1, it can be deduced that, the Gypsum Fibrosum micropowder of the present invention is applied to goods
In preparation process, it is possible to relatively conventional Gypsum Fibrosum is applied to goods system after carrying out high-temperature calcination process
Standby field, it can effectively improve the rupture strength of goods；And the process through the present invention
After method carries out Gypsum Fibrosum micropowder preparation, after it processes with traditional processing method, according to this
The Ginding process of invention, when energy consumption that Control release group and matched group are ground is consistent, and
When processing the sieve obtaining Gypsum Fibrosum powder and carrying out identical mesh number, it can effectively improve and sieves
Rate, reduces the energy consumption in process of lapping；Most importantly improve the stability of gypsum product,
Avoid Gypsum Fibrosum powder and the water molecules in environment, improve the activity of Gypsum Fibrosum powder.
The present invention in order to guarantee that the activity of Gypsum Fibrosum powder is improved largely, energy simultaneously
Enough guarantee that the stability of Gypsum Fibrosum powder is relatively strong, use the addition of additive so that additive blocks ring
Hydrone in border is combined with Gypsum Fibrosum powder, it is to avoid the Gypsum Fibrosum powder moisture absorption of grind into powder is agglomerating,
Improve Gypsum Fibrosum powder quality；The most still obtain Gypsum Fibrosum powder and adding former as filler or modifying agent
After in material, it is more excellent with the compatibility performance of unclassified stores, reduces Gypsum Fibrosum powder and is adding moisture
Stirring mixing difficulty in the environment of higher, improves Gypsum Fibrosum powder dispersion in unclassified stores
Property.In consideration of it, embodiments of the invention 1, embodiment 5, embodiment 6 are prepared by this researcher
Gypsum Fibrosum powder as filler for the preparation of PVC, all can effectively raise PVC
Whiteness, and in PVC raw material mixed process, it is possible to effective and its PVC raw material
Carrying out dispersion mixing, the difficulty in stirring mixed process is significant lower, and to mixed material
In active component detect, add in PVC raw material after its relatively conventional gypsum treatment
Active component is the most excellent, and detects Gypsum Fibrosum powder degree of scatter in material composition
Analyzing, it is substantially better than after traditional gypsum calcining grinds with the compatibility of PVC and is applied to
PVC.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is further limited
Fixed, but claimed scope is not only limited to description.Embodiment is to illustrate this
The enforcement of invention, is not intended to illustrate the model that technical scheme all may cover
Enclose.
The raw material that example 1 below-6 is chosen is all to carry out on the basis of removing surface Free water
's.
Embodiment 1
Take the natural gypsum of β state, send into and high-pressure powder grinding machine is ground process, obtain stone
Cream micropowder, its mesh number 600 mesh, and sieving rate are 93%.
It is as the filler in PVC material production process, and it effectively raises in PVC material
Raw material activity, improves the whiteness of PVC material, enhances the toughness of PVC material.
It is added in cement as cement retardative material, and it can effectively improve the property of cement
Can, and will not then dusting, after theing cement solidifies into test specimen, intensity during detection,
Its intensity is more excellent.
In addition, it is also used as other material modification agent, during rubber production
Modifying agent, it is also possible to prepare raw material as other goods, it is also possible to as military project material
Goods produce soldier-worker product as filler, effectively raises the pliability of goods.
Embodiment 2
Take the ardealite of β state, utilized high-pressure powder grinding machine to be ground processing, obtain stone
Cream micropowder, its mesh number is 1200 mesh, and sieving rate is 95%.
It is as the filler in PVC material production process, and it effectively raises in PVC material
Raw material activity, improves the whiteness of PVC material, enhances the toughness of PVC material.
It is added in cement as cement retardative material, and it can effectively improve the property of cement
Can, and will not then dusting, after theing cement solidifies into test specimen, intensity during detection,
Its intensity is more excellent.
In addition, it is also used as other material modification agent, during rubber production
Modifying agent；Soldier-worker product can also be produced as in military project material product as filler, have
The pliability that improve goods of effect.
Embodiment 3
Take the desulfurated plaster of β state, utilized high-pressure powder grinding machine to be ground processing, obtain
Gypsum Fibrosum micropowder, its mesh number is 3000 mesh, and sieving rate is 94%.
It is as the filler in PVC material production process, and it effectively raises in PVC material
Raw material activity, improves the whiteness of PVC material, enhances the toughness of PVC material.
It is added in cement as cement retardative material, and it can effectively improve the property of cement
Can, and will not then dusting, after theing cement solidifies into test specimen, intensity during detection,
Its intensity is more excellent.
In addition, it is also used as other material modification agent, during rubber production
Modifying agent；Soldier-worker product can also be produced as in military project material product as filler, have
The pliability that improve goods of effect.
Embodiment 4
On the basis of embodiment 1, stearic acid is used to mix with the natural gypsum of β state
After, stearic acid addition is account for desulfurated plaster weight 0.1%, is being used high-pressure powder grinding machine
Milled processed, obtains Gypsum Fibrosum micropowder, its mesh number be sieving rate during 600 mesh be 95%.
Embodiment 5
On the basis of embodiment 2, after using paraffin to mix with the ardealite of β state,
Paraffin addition is account for desulfurated plaster weight 0.05%, is ground using high-pressure powder grinding machine
Process, obtain Gypsum Fibrosum micropowder, its mesh number be sieving rate during 600 mesh be 97%.
Embodiment 6
On the basis of embodiment 3, use barium cadmium stabilizer and β state desulfurated plaster enter
After row mixing, barium cadmium stabilizer addition is account for desulfurated plaster weight 0.01%, then is added
Entering milled processed in high-pressure powder grinding machine, obtain Gypsum Fibrosum micropowder, its mesh number is mistake during 600 mesh
Sieve rate is 95%.
Embodiment 7
Take the natural gypsum of two water states, it is dried to constant weight under conditions of 60 DEG C, then will
The powder grinding to form more than 600 mesh in high-pressure powder grinding machine sent into by material after drying, obtains Gypsum Fibrosum
Micro powder product.
It is as the filler in PVC material production process, and it effectively raises in PVC material
Raw material activity, improves the whiteness of PVC material, enhances the toughness of PVC material.
It is added in cement as cement retardative material, and it can effectively improve the property of cement
Can, and will not then dusting, after theing cement solidifies into test specimen, intensity during detection,
Its intensity is more excellent.
In addition, it is also used as other material modification agent, during rubber production
Modifying agent；Soldier-worker product can also be produced as in military project material product as filler, have
The pliability that improve goods of effect.
Embodiment 8
Take the ardealite of two water states, by it under conditions of 90 DEG C, dry to constant weight, then will
The powder grinding to form more than 1200 mesh in high-pressure powder grinding machine sent into by material after drying, obtains ultra-fine
Gypsum Fibrosum micropowder product.
It is as the filler in PVC material production process, and it effectively raises in PVC material
Raw material activity, improves the whiteness of PVC material, enhances the toughness of PVC material.
It is added in cement as cement retardative material, and it can effectively improve the property of cement
Can, and will not then dusting, after theing cement solidifies into test specimen, intensity during detection,
Its intensity is more excellent.
In addition, it is also used as other material modification agent, during rubber production
Modifying agent；Soldier-worker product can also be produced as in military project material product as filler, have
The pliability that improve goods of effect.
Embodiment 9
Take the desulfurated plaster of two water states, by it under conditions of 40 DEG C, dry to constant weight, then
The powder grinding to form more than 3000 mesh in high-pressure powder grinding machine sent into by material after drying, is surpassed
Microlith cream micro powder product.
It is as the filler in PVC material production process, and it effectively raises in PVC material
Raw material activity, improves the whiteness of PVC material, enhances the toughness of PVC material.
It is added in cement as cement retardative material, and it can effectively improve the property of cement
Can, and will not then dusting, after theing cement solidifies into test specimen, intensity during detection,
Its intensity is more excellent.
In addition, it is also used as other material modification agent, during rubber production
Modifying agent；Soldier-worker product can also be produced as in military project material product as filler, have
The pliability that improve goods of effect.
Embodiment 10
On the basis of embodiment 7, at the natural gypsum by two water states, under the conditions of 50 DEG C
Drying to constant weight, then the material after drying mixes with additive, the consumption of additive is
Account for the 0.03% of the natural gypsum weight dried to constant weight；Additive is that zinc stearate is with stearic
Acid is according to the arbitrarily mixed mixture of ratio, then is sent in high-pressure powder grinding machine grind to form 1200
Purpose powder, its sieving rate is 95%, obtains Gypsum Fibrosum super fine.
Embodiment 11
On the basis of embodiment 8, by the ardealite of two water states, dry under the conditions of 70 DEG C
To constant weight, then the material after drying mixes with additive, and the consumption of additive is for accounting for baking
The 0.08% of the ardealite weight done to constant weight；Additive is zinc stearate with paraffin according to appointing
The meaning mixed mixture of ratio, then it is sent to high-pressure powder grinding machine grinds to form the powder of 3000 mesh
End, its sieving rate is 95%, obtains Gypsum Fibrosum super fine.
Embodiment 12
On the basis of embodiment 9, by the desulfurated plaster of two water states, dry under the conditions of 80 DEG C
Doing to constant weight, then the material after drying mixes with additive, the consumption of additive is for accounting for
The 0.07% of the desulfurated plaster weight dried to constant weight；Additive is barium cadmium stabilizer and barium zinc
Stabilizer is according to the arbitrarily mixed mixture of ratio, then is sent in high-pressure powder grinding machine grind to form
The powder of 3000 mesh, its sieving rate is 94%, obtains Gypsum Fibrosum super fine.
In addition, on the basis of above-described embodiment 4-6, it uses adjuvant to replace to the present invention
For additive, wherein said adjuvant is shrend Phosphorus Slag, shrend slag, water-quenched blast-furnace slag, life
One or more in Calx.The addition of adjuvant is the 1-20% accounting for raw materials quality；
In other embodiment, on the basis of above-described embodiment 10-12, it also exists
While adding additive, being added with adjuvant, adjuvant addition accounts for the 1-20% of raw materials quality,
Wherein, during described adjuvant is shrend Phosphorus Slag, shrend slag, water-quenched blast-furnace slag, quick lime
One or more.
In addition to the above embodiments, this researcher is also on the basis of above-mentioned elaboration, to this
The research process of invention makes the elaboration of tests below step:
Test example 1
Carry out the preparation of raw material according to 10kg bulge test, take the natural stone of two water states respectively
Cream, the ardealite of two water states, each 30kg of desulfurated plaster of two water states；And by above-mentioned each
Kind of gypsum raw material, under conditions of 60 DEG C, is dried to constant weight, then the Gypsum Fibrosum after being respectively dried is former
Material is placed in high-pressure powder grinding machine grinding, is prepared as Gypsum Fibrosum micropowder and 1200 purposes of 600 mesh respectively
Ultra-fine Gypsum Fibrosum micropowder, 3000 purpose ultra-fine Gypsum Fibrosum micropowder product, and the Gypsum Fibrosum micropowder obtained is produced
Product carry out sieving rate detection, and its result is as shown in table 2:
Table 2
Can be drawn by the testing result in table 2, it grinds to form Gypsum Fibrosum powder in high-pressure powder grinding machine
After, under its granularity more than 600 mesh, the granularity of its correspondence carries out the mistake of corresponding sieve aperture
Sieve processes, and its sieving rate is more than 93%.Effectively reduce difficulty prepared by Gypsum Fibrosum micropowder.
In addition, the Gypsum Fibrosum micropowder of above-mentioned preparation is also placed in natural environment anti-by this researcher
Only after 3 days, then its sieving rate is detected, its corresponding sieve aperture and the product of granularity, its
Sieving rate still can reach more than 93%, it is seen that it is difficult to moisture absorption, has preferably stability.
Test example 2
Carry out raw material preparation according to 10kg bulge test, prepare respectively β state the natural gypsum,
The ardealite of β state, each 40kg of desulfurated plaster of β state, directly adopt raw gypsum respectively
Be ground with high-pressure powder grinding machine, be prepared as respectively the Gypsum Fibrosum powder of 180 mesh, 600 mesh Gypsum Fibrosum micro-
Powder, the 1200 ultra-fine Gypsum Fibrosum micropowder of mesh, the 3000 ultra-fine Gypsum Fibrosum micropowder of mesh, detection corresponding product is right
Sieving rate under the granularity answered；Again by micro-to corresponding Gypsum Fibrosum powder, Gypsum Fibrosum micropowder, ultra-fine Gypsum Fibrosum
Powder product uses traditional preparation technology to be prepared as goods, to the rupture strength after goods maintenance 2h
Detecting, its result is as shown in table 3:
Table 3
| Project | The natural gypsum | Ardealite | Desulfurated plaster |
| Product fineness | 180 mesh sieving rates 91% | 180 mesh sieving rates 96% | 180 mesh sieving rates 95% |
| 2h rupture strength | 2.1MPa | 2.1MPa | 2.3MPa |
| Product fineness | 600 mesh sieving rates 93% | 600 mesh sieving rates 95% | 600 mesh sieving rates 93% |
| 2h rupture strength | 5.5MPa | 5.6MPa | 5.5MPa |
| Product fineness | 1200 mesh sieving rates 95% | 1200 mesh sieving rates 96% | 1200 mesh sieving rates 95% |
| 2h rupture strength | 6.2MPa | 6.5MPa | 6.3MPa |
| Product fineness | 3000 mesh sieving rates 94% | 3000 mesh sieving rates 95% | 3000 mesh sieving rates 96% |
| 2h rupture strength | 5.8MPa | 6.3MPa | 6.1MPa |
Shown it can be seen that along with the granularity of Gypsum Fibrosum micropowder diminishes by the data in table 3, its
Rupture strength after in product increases, and when its 600 mesh compares the granularity of 180 mesh, it resists
Folding intensity improves more than 3.2MPa, and along with granularity is more and more less, its rupture strength more comes
The biggest, and between 600 mesh to 1200 mesh, increase amplitude is at least 0.7MPa, it is seen then that at stone
The mesh number of cream micropowder is increasing make it form ultra-fine Gypsum Fibrosum micropowder after or Gypsum Fibrosum micropowder after,
It can effectively improve the intensity of goods, improves the performance of goods；But, according to this area
The general knowledge of technical staff is it is known that during Gypsum Fibrosum pulverizing is prepared as powder, it is difficult to
It is prepared to ultra-fine powder, and then causes the range of application of Gypsum Fibrosum by limitation.This research
Person is also based on this, by selecting the processing method of gypsum raw material so that Gypsum Fibrosum is former
Material can form micropowder and super fine, improves the range of application of Gypsum Fibrosum, and combines Gypsum Fibrosum pulverizing
The feature of moisture absorption it is prone to after becoming powder, after it is by removing the Free water in gypsum raw material, will
It grinds to form the powder of more than 600 mesh in high-pressure powder grinding machine so that the stability of gypsum powder
Strengthened, it is to avoid moisture absorption pockets of phenomenon, promoted the range of application of Gypsum Fibrosum powder.
In addition, this researcher is also by micro-for ultra-fine Gypsum Fibrosum more than 600 mesh of above-mentioned preparation
Powder, Gypsum Fibrosum micropowder are applied to the preparation field of macromolecular material, and are applied to the activity of process
Degree detects, and it can be effectively promoted the reaction in macromolecular material preparation process and carry out
Go down, reduce the activation energy of reaction, improve its dispersibility in macromolecule material product raw material.
Test example 3
Carry out raw material preparation according to 10kg bulge test, prepare respectively β state the natural gypsum,
The ardealite of β state, each 40kg of desulfurated plaster of β state；Additionally preparing additive 10kg,
Use stearic acid as additive.
According to 0.05% calculating that stearic acid adding proportion is Gypsum Fibrosum weight of material, respectively by β shape
The natural gypsum of state, the ardealite of β state, desulfurated plaster and the stearic acid additive of β state
After mixing, add in high-pressure powder grinding machine and grind, be prepared as the Gypsum Fibrosum powder of 180 mesh, the stone of 600 mesh
Cream micropowder, the 1200 ultra-fine Gypsum Fibrosum micropowder of purpose, the 3000 ultra-fine Gypsum Fibrosum micropowder of purpose, and to accordingly
The sieve aperture of the product correspondence granularity sieving rate processed that carries out sieving detect, its result is shown in
Shown in table 4:
Table 4
| Project | The natural gypsum | Ardealite | Desulfurated plaster |
| Product fineness | 180 mesh sieving rates 91% | 180 mesh sieving rates 96% | 180 mesh sieving rates 95% |
| Product fineness | 600 mesh sieving rates 95% | 600 mesh sieving rates 97% | 600 mesh sieving rates 95% |
| Product fineness | 1200 mesh sieving rates 95% | 1200 mesh sieving rates 94% | 1200 mesh sieving rates 94% |
| Product fineness | 3000 mesh sieving rates 93% | 3000 mesh sieving rates 95% | 3000 mesh sieving rates 94% |
Shown that result is it can be seen that its Gypsum Fibrosum grinding to form more than 600 mesh is micro-by the data in table 4
After powder, its sieving rate is more than 94%；Data in conjunction with table 2, table 3 show, it adds in addition
After adding agent, it can effectively reduce the difficulty in process of lapping, it is ensured that in the material after grinding
Granularity thinner, it is possible to increase the quality of Gypsum Fibrosum micropowder, and make preparation Gypsum Fibrosum micropowder
Rupture strength be further improved.
In addition, the various products that above-mentioned test example 3 obtains also are placed in certainly by this researcher
So environment places a week, then it is carried out the detection of sieving rate, it is seen that its sieving rate depends on
So maintaining more than 94%, the stable performance of its product, hygroscopicity is more weak, is not susceptible to conglomeration
Phenomenon, has higher dispersibility.
In order to guarantee that the performance of product obtained is more stable, the present invention is in a kind of embodiment
In be as raw material using the natural gypsum and/or industry by-product gypsum, and Free water therein is taken off
After removing, being prepared into mesh number Gypsum Fibrosum micropowder more than 600 mesh, this Gypsum Fibrosum micropowder can have
The raising intensity of effect, and there is higher activity and dispersibility.In other embodiment,
It, in order to more improve Gypsum Fibrosum micropowder and/or the performance of ultra-fine Gypsum Fibrosum micropowder, improves it
Stability, it is before grinding is prepared as micropowder, by Gypsum Fibrosum material and the interpolation of removing Free water
Agent mixes so that additive block gypsum surface with the hydrone effect in environment, keep away
Exempt from gypsum powder clustering phenomena, improve stability and the dispersibility of Gypsum Fibrosum micropowder.
In certain embodiments, it uses removing Free water under conditions of 60 DEG C；Avoid
The situation that the structure of water of crystallization is removed by substantial amounts of damage so that in the Gypsum Fibrosum micropowder of preparation
Containing a certain amount of water of crystallization, also make powder become the property of Gypsum Fibrosum micropowder of more than 600 mesh simultaneously
Can be stable.
In certain embodiments, its gypsum raw material used can also be for α-Gypsum Fibrosum, without water stone
Cream；The industry by-product gypsum used is the one in ardealite, desulfurated plaster, fluorgypsum etc..
The additive used in certain embodiments is that stearic acid, stearate, paraffin, barium cadmium are stable
One in agent, barium zinc stabilizer.The additive of employing in certain embodiments be stearic acid,
Stearate, paraffin, barium cadmium stabilizer, any mixture of barium zinc stabilizer, such as stearic acid
With stearate arbitrarily than the mixture mixed；Such as stearic acid and paraffin, barium cadmium stabilizer, barium
At least one arbitrarily than mixture in zinc stabilizer；As steady in paraffin and barium cadmium stabilizer, barium zinc
Determine in agent any than mixture etc. of at least one.
In order to better illustrate characteristic and the application of the Gypsum Fibrosum micropowder of the present invention, the present invention's
Gypsum Fibrosum micropowder and/or ultra-fine Gypsum Fibrosum micropowder that technical scheme is also obtained by researcher should
As filler or modifying agent in goods, such as, it is applied to conduct in the production of PVC
Filler, be applied in PP material as filler；In addition to this it is possible to be applied to military project material
In material products, improve the toughness of military project material, improve the performance of product.
The present invention is more topmost to be, its in certain embodiments, be by the natural gypsum with
After industry by-product gypsum is carried out arbitrarily than mixing, after being removed Free water, be prepared as being more than or
Person, equal to the micropowder of 600 mesh, so makes carrying out during Gypsum Fibrosum deposits, its difficulty deposited
Spend less, will not fear that the moisture in some gypsum raw material is relatively low, the water in some gypsum raw material
Divide content higher, separately deposit or transport, reducing in phosphoric acid by wet process industry
The processing cost of Gypsum Fibrosum.The most in certain embodiments, it is by ardealite and desulfurated plaster, phosphorus
Gypsum Fibrosum mixes with the natural gypsum etc. with fluorgypsum, desulfurated plaster with fluorgypsum, desulfurated plaster
Afterwards as gypsum raw material.In other embodiment, be by dihydrate gypsum, α-Gypsum Fibrosum,
β-Gypsum Fibrosum, anhydrous gypsum the most between any two or are made between three or three or after four kinds of mixing
Gypsum Fibrosum micropowder is prepared for gypsum raw material.And in mixed process, it is possible to reach mutual modification, make
The performance obtained in the Gypsum Fibrosum of various forms can mutually make up, and improves the performance of Gypsum Fibrosum micropowder, changes
The intensity of kind Gypsum Fibrosum micropowder and activity, improve Gypsum Fibrosum micropowder and the stability of/ultra-fine Gypsum Fibrosum micropowder.
Gypsum Fibrosum micropowder and/or ultra-fine Gypsum Fibrosum micropowder prepared by the present invention can be as some preparation systems
Activating agent during Bei.
It should be noted that be understood by: technical scheme is not by the restriction of above description.?
On the basis of the spirit invented and the scope of the present invention, foregoing description can be entered
Row modify, any above-mentioned only make not there is prominent essential characteristics and marked improvement
Modification, belong to the protection category of the present invention；And it should be appreciated that begging in scope
During Lun, but the present invention may not explicitly disclosed fall in the range of any characteristic range point
The end points of calcium protection domain should be considered, it is provided that protection domain should be by allowed by law
Explain that width is determined.
Claims (10)
1. a high-strength composite Gypsum Fibrosum micropowder preparation method, it is characterised in that with natural stone
Cream, industry by-product gypsum at least one be raw material, slough Free water, make mesh number >=600 mesh
Micropowder.
2. high-strength composite Gypsum Fibrosum micropowder preparation method as claimed in claim 1, its feature exists
In, described micropowder, its preparation process adds additive and/or adjuvant mixed processing,
Obtain activity micropowder.
3. high-strength composite Gypsum Fibrosum micropowder preparation method as claimed in claim 2, its feature exists
In, described additive is for blocking outside moisture and micropowder bonded, it is to avoid in micropowder
Form Free water, improve micropowder activity and the material of heat stability.
4. high-strength composite Gypsum Fibrosum micropowder preparation method as claimed in claim 2 or claim 3, it is special
Levying and be, described additive is stearic acid, stearate, paraffin, barium cadmium stabilizer, barium
One or more any mixture in zinc stabilizer；Described adjuvant be shrend Phosphorus Slag,
One or more in shrend slag, water-quenched blast-furnace slag, quick lime arbitrarily mix；Described adds
Adding agent addition is the 0.01-0.5% accounting for raw materials quality；Described adjuvant addition is for accounting for raw material
The 1-20% of quality.
5. high-strength composite Gypsum Fibrosum micropowder preparation method as claimed in claim 4, its feature exists
In, described stearate is at least one in calcium stearate, magnesium stearate.
6. high-strength composite Gypsum Fibrosum micropowder preparation method as claimed in claim 1, its feature exists
In, described Free water of sloughing is that the natural gypsum and/or industry by-product gypsum are used 40-90 DEG C
Drying and processing is to constant weight.
7. the high-strength composite Gypsum Fibrosum micropowder preparation method as described in claim 1 or 6, it is special
Levying and be, described Free water of sloughing is the natural gypsum and/or industry by-product gypsum to be used
60 DEG C of drying and processings are to constant weight.
8. high-strength composite Gypsum Fibrosum micropowder preparation method as claimed in claim 1, its feature exists
In, described micropowder, is after sloughing Free water, is prepared from by its ball milling, is milled to ratio
Surface area is 350-900m2/kg。
9. the high-strength composite Gypsum Fibrosum micropowder preparation method system as described in any one of claim 1-8
The application of the Gypsum Fibrosum micropowder made, it is characterised in that this Gypsum Fibrosum micropowder can act as military project material system
The modifying agent of product, inserts.
10. the high-strength composite Gypsum Fibrosum micropowder preparation method as described in any one of claim 1-8
The Gypsum Fibrosum micropowder made, it is characterised in that its fineness is the micropowder of >=600 mesh, sieving rate >=
90%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384403A (en) * | 2018-12-04 | 2019-02-26 | 兰州宏方新型建材科技有限公司 | A kind of building gypsum that enhancing is modified |
| CN111825421A (en) * | 2020-07-29 | 2020-10-27 | 襄阳市政建设集团有限公司 | Preparation method of active phosphogypsum micro powder based on heat insulation material |
| CN111875273A (en) * | 2020-08-13 | 2020-11-03 | 江苏一夫科技股份有限公司 | High-strength gypsum cementing material based on anhydrite and desulfurized beta powder and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532164A (en) * | 2003-03-19 | 2004-09-29 | 铜陵化学工业集团有限公司 | Method for producing building gypsum powder using phosphrus gypsum |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532164A (en) * | 2003-03-19 | 2004-09-29 | 铜陵化学工业集团有限公司 | Method for producing building gypsum powder using phosphrus gypsum |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384403A (en) * | 2018-12-04 | 2019-02-26 | 兰州宏方新型建材科技有限公司 | A kind of building gypsum that enhancing is modified |
| CN111825421A (en) * | 2020-07-29 | 2020-10-27 | 襄阳市政建设集团有限公司 | Preparation method of active phosphogypsum micro powder based on heat insulation material |
| CN111875273A (en) * | 2020-08-13 | 2020-11-03 | 江苏一夫科技股份有限公司 | High-strength gypsum cementing material based on anhydrite and desulfurized beta powder and preparation method thereof |
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