CN102276228B - Preparation method of ardealite recrystallization wall material - Google Patents
Preparation method of ardealite recrystallization wall material Download PDFInfo
- Publication number
- CN102276228B CN102276228B CN201110142046.3A CN201110142046A CN102276228B CN 102276228 B CN102276228 B CN 102276228B CN 201110142046 A CN201110142046 A CN 201110142046A CN 102276228 B CN102276228 B CN 102276228B
- Authority
- CN
- China
- Prior art keywords
- ardealite
- recrystallization
- wall material
- preparation
- phosphogypsum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 title claims abstract description 20
- 238000001953 recrystallisation Methods 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000654 additive Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 7
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- HIEHAIZHJZLEPQ-UHFFFAOYSA-M sodium;naphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 HIEHAIZHJZLEPQ-UHFFFAOYSA-M 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 abstract description 5
- 238000001354 calcination Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 239000011449 brick Substances 0.000 abstract description 4
- 239000004568 cement Substances 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 description 17
- 239000010440 gypsum Substances 0.000 description 17
- 239000000047 product Substances 0.000 description 5
- 150000004683 dihydrates Chemical class 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004137 mechanical activation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Abstract
The invention provides a preparation method of an ardealite recrystallization wall material. The method comprises steps of: mixing ardealite and additives in a mass ratio of 1:0.02-0.15; grinding the mixture to -200 mesh to realize intimate mixing of the ardealite and the additives; mixing the ground mixture and water in a mass ratio of 1:0.15-0.25, blending well, moulding and maintaining under normal temperature and normal pressure to obtain an ardealite wall finished product. According to the method, cost of binder is saved, and a calcination process and corresponding pollution are avoided. More importantly, the recrystallization solidified wall material has more stable performance and overcomes a problem of expansion and cracking of a current similar burn-free ardealite brick during usage, because a phenomenon of an unstable long-term wall material endurance, caused by expansion of sulphate aluminium after addition of cement, is avoided.
Description
Technical field
The present invention relates to a kind of preparation method of materials for wall, especially relate to a kind of preparation method of ardealite recrystallization wall material, belong to building material technical field.
Background technology
It is one of important method of utilizing in a large number phosphogypsum that phosphogypsum is prepared materials for wall.The preparation of existing gypsum (comprising natural mineral gypsum and industry by-product gypsum) materials for wall mainly contains following three kinds of methods:
(1) by calcining, former dihydrate gypsum is become to semi-hydrated gypsum through heat, then water modulation pulping moulding make semi-hydrated gypsum again become dihydrate gypsum and solidify, thereby produce the materials for wall with some strength.
(2) in phosphogypsum, add organic or inorganic gelling material (as resin, cement etc.) to produce materials for wall as binding agent, now raw material gypsum is directly used without high-temperature calcination.
(3) by phosphogypsum or be equipped with part other auxiliary material moulding by steam-cured or sintering, make brick.
All there is the problems such as generation is polluted, energy consumption is higher, cost is higher in above method.
Summary of the invention
For overcoming the problems such as prior art produces pollution, energy consumption is higher, cost is higher, the invention provides a kind of preparation method of ardealite recrystallization wall material, utilize natural mineral gypsum and industry by-product gypsum to produce gypsum and do materials for wall, by following technical proposal, realize.
A preparation method for ardealite recrystallization wall material, following each step of process:
A. by phosphogypsum and additive, be that 1 ︰ 0.02～0.15 mixes in mass ratio;
B. compound is ground to fineness for-200 orders, to realize phosphogypsum, mixes with the close of additive;
C. by the compound of milled and water, be that 1 ︰ 0.15～0.25 mixes thoroughly in mass ratio, then carry out moulding, through normal temperature and pressure maintenance, obtain phosphogypsum body of wall finished product.
Describedly being ground to conventional Ginding process, is ball milling, Vertical Mill, roller mill or vibration mill.
Described additive comprises dispersion agent, solidifying agent, exciting agent.
Described dispersion agent is sodium naphthalene sulfonate.
Described solidifying agent is CaO or Ca (OH)
2.
Described exciting agent is polyvinyl alcohol.
In described step C, be shaped to conventional forming method.
The present invention adopts surface active technology to make phosphogypsum microcrystallite surface active, and under the effect of water, dihydrate gypsum molecule is solidified and produces intensity to large crystal grain gathering, recrystallization gradually by diffusion.Surface active comprises two aspects: 1. mechanical activation:, under mechanical force, raw material gypsum particle size degradation is disperseed, produce a large amount of unsalted surfaces to be conducive to the development growth of crystal; 2. chemical surface activation: promote gypsum recrystallize to make it to solidify and produce the additive of intensity thereby add; 3. add solidifying agent preventing objectionable impurities stripping in industry by-product gypsum etc.
The effect that the present invention possesses and advantage: without calcining, do not need dihydrate gypsum to become semi-hydrated gypsum, also without sintering method.Without adding any organic and inorganic caking agent, its intensity be can't help all kinds of binding agents and is produced.
Prepare the other technologies route comparison of materials for wall with existing phosphogypsum, recrystallization method is except without calcining, also without adding extra binding agent, as cement and resin etc.Its curing power produces by the variation of self crystal structure, thereby without the assistance of external force.This feature has not only been saved the cost that adds binding agent, calcining link and the corresponding pollution causing have been reduced, the more important thing is that the curing materials for wall performance of recrystallization is more stable, overcome the problem of swelling cracking in existing similar no-baking ardealite brick use, without causing sulplo-aluminate expansion to cause the unsettled phenomenon of long durability of materials for wall after adding cement.
Embodiment
Embodiment 1
A. 1 ton of phosphogypsum is mixed with 20kg sodium naphthalene sulfonate, CaO and polyvinyl alcohol;
B. compound is milled to fineness for-200 orders, to realize phosphogypsum, mixes with the close of additive;
C. the compound of milled and 200kg water are mixed thoroughly, then pressed brick moulding, through normal temperature and pressure maintenance, obtain phosphogypsum body of wall finished product.
Embodiment 2
A. by 1 ton of phosphogypsum and 150kg sodium naphthalene sulfonate, Ca (OH)
2mix with polyvinyl alcohol;
B. compound being carried out to Vertical Mill to fineness is-200 orders, to realize phosphogypsum, mixes with the close of additive;
C. the compound of milled and 250kg water are mixed thoroughly, then carried out extrusion molding, through normal temperature and pressure maintenance, obtain phosphogypsum body of wall finished product.
Embodiment 3
A. by 1 ton of phosphogypsum and 100kg sodium naphthalene sulfonate, Ca (OH)
2mix with polyvinyl alcohol;
B. compound is carried out to roller and be milled to fineness for-200 orders, to realize phosphogypsum, mix with the close of additive;
C. the compound of milled and 150kg water are mixed thoroughly, then carried out aerated-block moulding, through normal temperature and pressure maintenance, obtain phosphogypsum body of wall finished product.
Embodiment 4
A. 1 ton of phosphogypsum is mixed with 50kg sodium naphthalene sulfonate, CaO and polyvinyl alcohol;
B. compound being carried out to vibration mill to fineness is-200 orders, to realize phosphogypsum, mixes with the close of additive;
C. the compound of milled and 180kg water are mixed thoroughly, then carried out extrusion molding, through normal temperature and pressure maintenance, obtain phosphogypsum body of wall finished product.
Claims (2)
1. a preparation method for ardealite recrystallization wall material, is characterized in that through following each step:
A. by phosphogypsum and additive, be that 1 ︰ 0.02～0.15 mixes in mass ratio, and additive is dispersion agent, solidifying agent and exciting agent; Wherein, dispersion agent is that sodium naphthalene sulfonate, solidifying agent are CaO or Ca (OH)
2, exciting agent is polyvinyl alcohol;
B. compound is ground to fineness for-200 orders;
C. by the compound of milled and water, be that 1 ︰ 0.15～0.25 mixes thoroughly in mass ratio, then carry out moulding, through normal temperature and pressure maintenance, obtain phosphogypsum body of wall finished product.
2. preparation method according to claim 1, is characterized in that: described step B is ground to conventional Ginding process, is ball milling, Vertical Mill, roller mill or vibration mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110142046.3A CN102276228B (en) | 2011-05-30 | 2011-05-30 | Preparation method of ardealite recrystallization wall material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110142046.3A CN102276228B (en) | 2011-05-30 | 2011-05-30 | Preparation method of ardealite recrystallization wall material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102276228A CN102276228A (en) | 2011-12-14 |
| CN102276228B true CN102276228B (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110142046.3A Expired - Fee Related CN102276228B (en) | 2011-05-30 | 2011-05-30 | Preparation method of ardealite recrystallization wall material |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172288B (en) * | 2013-03-07 | 2015-04-22 | 云南磷化集团有限公司 | Phosphogypsum pretreatment method |
| CN104030649B (en) * | 2014-06-09 | 2017-02-01 | 中国地质大学（武汉） | Production process for high-strength high-volume phosphogypsum baking-free brick |
| CN105400236A (en) * | 2015-11-29 | 2016-03-16 | 贵州开磷集团股份有限公司 | Method for using ardealite as polyvinyl chloride soft sectional material packing |
| CN105482504A (en) * | 2015-11-29 | 2016-04-13 | 贵州开磷集团股份有限公司 | Method for preparing PVC filling material from phosphogypsum as raw material |
| CN105331008A (en) * | 2015-11-29 | 2016-02-17 | 贵州开磷集团股份有限公司 | Preparation method for producing packing by taking ardealite as polyvinyl chloride sheet material |
| US10737979B2 (en) | 2017-04-20 | 2020-08-11 | United States Gypsum Company | Gypsum set accelerator and method of preparing same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1448357A (en) * | 2002-03-29 | 2003-10-15 | 山东工程学院 | Phosphogypsum wall covering and prep. thereof |
-
2011
- 2011-05-30 CN CN201110142046.3A patent/CN102276228B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1448357A (en) * | 2002-03-29 | 2003-10-15 | 山东工程学院 | Phosphogypsum wall covering and prep. thereof |
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| Publication number | Publication date |
|---|---|
| CN102276228A (en) | 2011-12-14 |
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