CN105347720A - Preparation method for cement retarder by using desulfurized gypsum - Google Patents
Preparation method for cement retarder by using desulfurized gypsum Download PDFInfo
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- CN105347720A CN105347720A CN201510877263.5A CN201510877263A CN105347720A CN 105347720 A CN105347720 A CN 105347720A CN 201510877263 A CN201510877263 A CN 201510877263A CN 105347720 A CN105347720 A CN 105347720A
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- desulfurated plaster
- filtrate
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- 239000004568 cement Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000010440 gypsum Substances 0.000 title abstract description 15
- 229910052602 gypsum Inorganic materials 0.000 title abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 40
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 9
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 9
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 claims abstract description 8
- 230000032683 aging Effects 0.000 claims abstract description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 8
- HNEGQIOMVPPMNR-NSCUHMNNSA-N mesaconic acid Chemical compound OC(=O)C(/C)=C/C(O)=O HNEGQIOMVPPMNR-NSCUHMNNSA-N 0.000 claims abstract description 8
- HNEGQIOMVPPMNR-UHFFFAOYSA-N methylfumaric acid Natural products OC(=O)C(C)=CC(O)=O HNEGQIOMVPPMNR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011780 sodium chloride Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 36
- 239000011505 plaster Substances 0.000 claims description 35
- 239000000706 filtrate Substances 0.000 claims description 25
- 230000003292 diminished effect Effects 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 7
- 229960004232 linoleic acid Drugs 0.000 claims description 7
- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 6
- 235000010241 potassium sorbate Nutrition 0.000 claims description 6
- 229940069338 potassium sorbate Drugs 0.000 claims description 6
- 239000004302 potassium sorbate Substances 0.000 claims description 6
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 6
- 239000001509 sodium citrate Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical class [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 6
- 235000019263 trisodium citrate Nutrition 0.000 claims description 6
- 238000003483 aging Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 238000007605 air drying Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 abstract 1
- 235000020778 linoleic acid Nutrition 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 150000004683 dihydrates Chemical class 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 2
- 235000010261 calcium sulphite Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- -1 propyl lycine Chemical compound 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a preparation method for a cement retarder by using desulfurized gypsum and belongs to the field of technical preparation of retarders. The preparation method comprises the following steps: firstly, mixing desulfurized gypsum, calcium hydroxide and a sodium chloride solution, heating the mixture, filtering, heating the filtered substance at high temperature, and soaking the filtered substance with linoleic acid so as to obtain modified activated desulfurized gypsum powder; mixing the modified activated desulfurized gypsum powder with C12H25N(CH3)2(CH2)3SO3, mesaconic acid, ammonia water and the like, and carrying out ultrasonic oscillation, heating, ageing and air drying so as to obtain the cement retarder. An example proves that the desulfurized gypsum is used fully, the resource waste is reduced, the environment is protected, the setting time of concrete is prolonged by 65-70% by the prepared cement retarder, newly mixed concrete is enabled to keep plasticity for a longer time, the casting is convenient and the construction efficiency is improved by 75% or above.
Description
Technical field
The invention discloses a kind of preparation method utilizing desulfurated plaster to prepare cement setting retarder, belong to retardant technology preparation field.
Background technology
When producing cement, for preventing it from condensing too fast so that cannot construct, usually need the appropriate retardant of admixture.Due to gypsum not only adjustable cement setting time, its early strength can also be improved and improve its performance, being thus used widely.Gypsum has broad variety, but cement mill uses the more mixed gypsum being natural dihydrate gypsum and it and anhydrite and forming.In recent years, due to the restriction by resource distribution and transport condition, particularly in order to reduce to the consumption of natural resources to preserve the ecological environment, industry by-product gypsum is brought into use in increasing cement mill.
Desulfurated plaster, it is the waste that the boiler in the kiln of burning coal, particularly fuel-burning power plant utilizes the sulfurous gas in lime white absorption flue gas to be formed in flue gas desulfurization course, its main chemical compositions is calcium sulfate, chemical composition and natural dihydrate gypsum close, but physical form is different from natural dihydrate gypsum.It is added water by lime-limestone powder to make slurries, squeeze into absorption tower as absorption agent pump and fully contact mixing with flue gas, sulfurous gas in flue gas and the calcium hydroxide in slurries and the air blasted from tower bottom carry out oxidizing reaction and generate calcium sulfate, calcium sulfite, after reaching certain saturation degree, discharge absorption tower, then through concentrated, dehydration, make its water content be less than 10%, crystallization forms the mixture of dihydrate gypsum and calcium sulfite.
Desulfurated plaster is a kind of important reclaimed gypsum resource, but the impurity effects such as the organism in desulfurated plaster the exploitation of desulfurated plaster, and thus in many enterprises, pile up like a mountain for desulfurated plaster, both wasted resource, contaminate environment, takies again a large amount of soil.Cement is one of three large material of construction, if desulfurated plaster is well used in Cement industry, then can consume these desulfurated plasters that pile up like a mountain in a large number.
Summary of the invention
The technical problem that the present invention mainly solves: the exploitation of desulfurated plaster for impurity effects such as the organism in current desulfurated plaster, pile up like a mountain to make desulfurated plaster, both resource was wasted, contaminate environment, take again the drawback in a large amount of soil, provide a kind of preparation method utilizing desulfurated plaster to prepare cement setting retarder.First desulfurated plaster mixes with calcium hydroxide and sodium chloride solution by the method, it is being heated, filter after the filtrate heat that obtains, soaked by linolic acid, obtain modified active desulfurated plaster powder, and then by mixing such as its dodecyl dimethyl azochlorosulfonate propyl lycine, methylfumaric acid, ammoniacal liquor, through sonic oscillation, heating, ageing, air-dryly can cement setting retarder be obtained.The present invention not only makes desulfurated plaster be fully used, and decreases the waste of resource, protects environment; and the cement setting retarder made extends concrete time of coagulation; make the fresh concrete long period keep plasticity, convenient cast, improves operating efficiency.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) get 1 ~ 3kg desulfurated plaster and put into container, add 300 ~ 500g calcium hydroxide wherein, stir, then the sodium chloride solution that massfraction is 10 ~ 25% is added wherein, flood solid particulate matter 6 ~ 8cm, subsequently container is moved in magnetic agitation oil bath pan, set temperature is 90 ~ 110 DEG C, stirring velocity setting 160 ~ 240r/min, stirs 10 ~ 12h, is cooled to room temperature afterwards, filtration under diminished pressure, the filtrate of gained is put into retort furnace, and set temperature is 200 ~ 300 DEG C, keeps temperature 1 ~ 3h;
(2) after above-mentioned insulation terminates, be down to room temperature, container taken out, solid is wherein put into pulverizer and pulverizes, cross standard sieve and obtain 100 ~ 150 order powder, the powder of gained is put into container, adds linolic acid wherein and soak powder, 35 ~ 40 DEG C are heated to container, keep temperature 3 ~ 6h, then filtration under diminished pressure while hot, puts into air dryer by the filtrate of gained and carries out air-dry, obtain modified active desulfurated plaster powder;
(3) by quality hundred parts of ratios, get 60 ~ 65 parts of modified active desulfurated plaster powder, 3 ~ 5 parts of dodecyl dimethyl azochlorosulfonate propyl lycines, 5 ~ 10 parts of methylfumaric acid, 10 ~ 15 parts of trisodium citrates, 2 ~ 6 parts of potassium sorbate and massfraction are the ammoniacal liquor of 20%, put into container to stir, add distilled water immersion mixture wherein, then container is placed in ultrasonic oscillator, arranging frequency is 30 ~ 35KHz, after vibration 20 ~ 30min, container is taken out, it is heated, until boiling, keep temperature 20 ~ 30min;
(4) after above-mentioned insulation terminates, be down to room temperature, static ageing 2 ~ 4h, then filter behind cooling vessel to 5 ~ 10 DEG C, the filtrate of gained is put into air dryer carries out air-dry, filtrate after air-dry is put into pulverizer pulverize, cross standard sieve and obtain 30 ~ 60 order powder, can cement setting retarder be obtained.
Application method of the present invention is: the cement setting retarder obtained by the present invention is put into cement to be mixed, wherein add-on is add 2 ~ 3g cement setting retarder in 1 ~ 2t cement, after stirring, add the water of cement quality 35 ~ 55%, again fully stir, until one-tenth sticky mass.After 1 ~ 2h, the cement after stirring does not also condense, and extends for 65 ~ 70% concrete time of coagulation, and convenient cast, improves the operating efficiency of more than 75%.
The invention has the beneficial effects as follows:
(1) saved resource, protected environment, the value of desulfurated plaster is fully utilized;
(2) cement setting retarder made extends concrete time of coagulation, makes the fresh concrete long period keep plasticity, and convenient cast, improves the operating efficiency of more than 75%.
Embodiment
First get 1 ~ 3kg desulfurated plaster and put into container, add 300 ~ 500g calcium hydroxide wherein, stir, then the sodium chloride solution that massfraction is 10 ~ 25% is added wherein, flood solid particulate matter 6 ~ 8cm, subsequently container is moved in magnetic agitation oil bath pan, set temperature is 90 ~ 110 DEG C, stirring velocity setting 160 ~ 240r/min, stirs 10 ~ 12h, is cooled to room temperature afterwards, filtration under diminished pressure, the filtrate of gained is put into retort furnace, and set temperature is 200 ~ 300 DEG C, keeps temperature 1 ~ 3h; Then after above-mentioned insulation terminates, be down to room temperature, container taken out, solid is wherein put into pulverizer and pulverizes, cross standard sieve and obtain 100 ~ 150 order powder, the powder of gained is put into container, adds linolic acid wherein and soak powder, 35 ~ 40 DEG C are heated to container, keep temperature 3 ~ 6h, then filtration under diminished pressure while hot, puts into air dryer by the filtrate of gained and carries out air-dry, obtain modified active desulfurated plaster powder; Afterwards by quality hundred parts of ratios, get 60 ~ 65 parts of modified active desulfurated plaster powder, 3 ~ 5 parts of dodecyl dimethyl azochlorosulfonate propyl lycines, 5 ~ 10 parts of methylfumaric acid, 10 ~ 15 parts of trisodium citrates, 2 ~ 6 parts of potassium sorbate and massfraction are the ammoniacal liquor of 20%, put into container to stir, add distilled water immersion mixture wherein, then container is placed in ultrasonic oscillator, arranging frequency is 30 ~ 35KHz, after vibration 20 ~ 30min, container is taken out, it is heated, until boiling, keep temperature 20 ~ 30min; Finally after above-mentioned insulation terminates, be down to room temperature, static ageing 2 ~ 4h, then filter behind cooling vessel to 5 ~ 10 DEG C, the filtrate of gained is put into air dryer carries out air-dry, filtrate after air-dry is put into pulverizer pulverize, cross standard sieve and obtain 30 ~ 60 order powder, can cement setting retarder be obtained.
Example 1
First get 1kg desulfurated plaster and put into container, add 300g calcium hydroxide wherein, stir, then add the sodium chloride solution that massfraction is 10% wherein, flood solid particulate matter 6cm, subsequently container is moved in magnetic agitation oil bath pan, set temperature is 90 DEG C, stirring velocity setting 160r/min, stirs 10h, is cooled to room temperature afterwards, filtration under diminished pressure, the filtrate of gained is put into retort furnace, and set temperature is 200 DEG C, keeps temperature 1h; Then after above-mentioned insulation terminates, be down to room temperature, container taken out, solid is wherein put into pulverizer and pulverizes, cross standard sieve and obtain 100 order powder, the powder of gained is put into container, adds linolic acid wherein and soak powder, 35 DEG C are heated to container, keep temperature 3h, then filtration under diminished pressure while hot, puts into air dryer by the filtrate of gained and carries out air-dry, obtain modified active desulfurated plaster powder; Afterwards by quality hundred parts of ratios, get 60 parts of modified active desulfurated plaster powder, 3 parts of dodecyl dimethyl azochlorosulfonate propyl lycines, 5 parts of methylfumaric acid, 10 parts of trisodium citrates, 2 parts of potassium sorbate and massfraction are the ammoniacal liquor of 20%, put into container to stir, add distilled water immersion mixture wherein, then container is placed in ultrasonic oscillator, arranging frequency is 30KHz, after vibration 20min, container is taken out, it is heated, until boiling, keep temperature 20min; Finally after above-mentioned insulation terminates, be down to room temperature, static ageing 2h, then filter after cooling vessel to 5 DEG C, the filtrate of gained is put into air dryer and carries out air-dry, the filtrate after air-dry is put into pulverizer and pulverizes, cross standard sieve and obtain 30 order powder, can cement setting retarder be obtained.
This example operation is simple, during use, cement setting retarder obtained by the present invention is put into cement to be mixed, wherein add-on is add 2g cement setting retarder in 1t cement, after stirring, add the water of cement quality 35%, again fully stir, until one-tenth sticky mass.After 1h, the cement after stirring does not also condense, and extends for 65% concrete time of coagulation, and convenient cast, improves the operating efficiency of 75%.
Example 2
First get 2kg desulfurated plaster and put into container, add 400g calcium hydroxide wherein, stir, then add the sodium chloride solution that massfraction is 20% wherein, flood solid particulate matter 7cm, subsequently container is moved in magnetic agitation oil bath pan, set temperature is 100 DEG C, stirring velocity setting 220r/min, stirs 11h, is cooled to room temperature afterwards, filtration under diminished pressure, the filtrate of gained is put into retort furnace, and set temperature is 250 DEG C, keeps temperature 2h; Then after above-mentioned insulation terminates, be down to room temperature, container taken out, solid is wherein put into pulverizer and pulverizes, cross standard sieve and obtain 135 order powder, the powder of gained is put into container, adds linolic acid wherein and soak powder, 38 DEG C are heated to container, keep temperature 5h, then filtration under diminished pressure while hot, puts into air dryer by the filtrate of gained and carries out air-dry, obtain modified active desulfurated plaster powder; Afterwards by quality hundred parts of ratios, get 63 parts of modified active desulfurated plaster powder, 4 parts of dodecyl dimethyl azochlorosulfonate propyl lycines, 8 parts of methylfumaric acid, 13 parts of trisodium citrates, 4 parts of potassium sorbate and massfraction are the ammoniacal liquor of 20%, put into container to stir, add distilled water immersion mixture wherein, then container is placed in ultrasonic oscillator, arranging frequency is 33KHz, after vibration 25min, container is taken out, it is heated, until boiling, keep temperature 25min; Finally after above-mentioned insulation terminates, be down to room temperature, static ageing 3h, then filter after cooling vessel to 8 DEG C, the filtrate of gained is put into air dryer and carries out air-dry, the filtrate after air-dry is put into pulverizer and pulverizes, cross standard sieve and obtain 50 order powder, can cement setting retarder be obtained.
This example operation is simple, during use, cement setting retarder obtained by the present invention is put into cement to be mixed, wherein add-on is add 2.5g cement setting retarder in 1.5t cement, after stirring, add the water of cement quality 45%, again fully stir, until one-tenth sticky mass.After 1.5h, the cement after stirring does not also condense, and extends for 68% concrete time of coagulation, and convenient cast, improves the operating efficiency of 77%.
Example 3
First get 3kg desulfurated plaster and put into container, add 500g calcium hydroxide wherein, stir, then add the sodium chloride solution that massfraction is 25% wherein, flood solid particulate matter 8cm, subsequently container is moved in magnetic agitation oil bath pan, set temperature is 110 DEG C, stirring velocity setting 240r/min, stirs 12h, is cooled to room temperature afterwards, filtration under diminished pressure, the filtrate of gained is put into retort furnace, and set temperature is 300 DEG C, keeps temperature 3h; Then after above-mentioned insulation terminates, be down to room temperature, container taken out, solid is wherein put into pulverizer and pulverizes, cross standard sieve and obtain 150 order powder, the powder of gained is put into container, adds linolic acid wherein and soak powder, 40 DEG C are heated to container, keep temperature 6h, then filtration under diminished pressure while hot, puts into air dryer by the filtrate of gained and carries out air-dry, obtain modified active desulfurated plaster powder; Afterwards by quality hundred parts of ratios, get 65 parts of modified active desulfurated plaster powder, 5 parts of dodecyl dimethyl azochlorosulfonate propyl lycines, 10 parts of methylfumaric acid, 15 parts of trisodium citrates, 6 parts of potassium sorbate and massfraction are the ammoniacal liquor of 20%, put into container to stir, add distilled water immersion mixture wherein, then container is placed in ultrasonic oscillator, arranging frequency is 35KHz, after vibration 30min, container is taken out, it is heated, until boiling, keep temperature 30min; Finally after above-mentioned insulation terminates, be down to room temperature, static ageing 4h, then filter after cooling vessel to 10 DEG C, the filtrate of gained is put into air dryer and carries out air-dry, the filtrate after air-dry is put into pulverizer and pulverizes, cross standard sieve and obtain 60 order powder, can cement setting retarder be obtained.
This example operation is simple, during use, cement setting retarder obtained by the present invention is put into cement to be mixed, wherein add-on is add 3g cement setting retarder in 2t cement, after stirring, add the water of cement quality 55%, again fully stir, until one-tenth sticky mass.After 2h, the cement after stirring does not also condense, and extends for 70% concrete time of coagulation, and convenient cast, improves the operating efficiency of 80%.
Claims (1)
1. utilize desulfurated plaster to prepare a preparation method for cement setting retarder, it is characterized in that concrete preparation method is:
(1) get 1 ~ 3kg desulfurated plaster and put into container, add 300 ~ 500g calcium hydroxide wherein, stir, then the sodium chloride solution that massfraction is 10 ~ 25% is added wherein, flood solid particulate matter 6 ~ 8cm, subsequently container is moved in magnetic agitation oil bath pan, set temperature is 90 ~ 110 DEG C, stirring velocity setting 160 ~ 240r/min, stirs 10 ~ 12h, is cooled to room temperature afterwards, filtration under diminished pressure, the filtrate of gained is put into retort furnace, and set temperature is 200 ~ 300 DEG C, keeps temperature 1 ~ 3h;
(2) after above-mentioned insulation terminates, be down to room temperature, container taken out, solid is wherein put into pulverizer and pulverizes, cross standard sieve and obtain 100 ~ 150 order powder, the powder of gained is put into container, adds linolic acid wherein and soak powder, 35 ~ 40 DEG C are heated to container, keep temperature 3 ~ 6h, then filtration under diminished pressure while hot, puts into air dryer by the filtrate of gained and carries out air-dry, obtain modified active desulfurated plaster powder;
(3) by quality hundred parts of ratios, get 60 ~ 65 parts of modified active desulfurated plaster powder, 3 ~ 5 parts of dodecyl dimethyl azochlorosulfonate propyl lycines, 5 ~ 10 parts of methylfumaric acid, 10 ~ 15 parts of trisodium citrates, 2 ~ 6 parts of potassium sorbate and massfraction are the ammoniacal liquor of 20%, put into container to stir, add distilled water immersion mixture wherein, then container is placed in ultrasonic oscillator, arranging frequency is 30 ~ 35KHz, after vibration 20 ~ 30min, container is taken out, it is heated, until boiling, keep temperature 20 ~ 30min;
(4) after above-mentioned insulation terminates, be down to room temperature, static ageing 2 ~ 4h, then filter behind cooling vessel to 5 ~ 10 DEG C, the filtrate of gained is put into air dryer carries out air-dry, filtrate after air-dry is put into pulverizer pulverize, cross standard sieve and obtain 30 ~ 60 order powder, can cement setting retarder be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877263.5A CN105347720B (en) | 2015-12-03 | 2015-12-03 | A kind of preparation method that cement retarder is prepared using desulfurated plaster |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877263.5A CN105347720B (en) | 2015-12-03 | 2015-12-03 | A kind of preparation method that cement retarder is prepared using desulfurated plaster |
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| Publication Number | Publication Date |
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| CN105347720A true CN105347720A (en) | 2016-02-24 |
| CN105347720B CN105347720B (en) | 2018-06-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279219A (en) * | 1999-06-24 | 2001-01-10 | 武汉可锐思新材料科技有限公司 | Ardealite setting retarder for cement and its preparing process |
| CN1944315A (en) * | 2006-10-17 | 2007-04-11 | 徐奇威 | Retarder for cement production and its preparing method |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
-
2015
- 2015-12-03 CN CN201510877263.5A patent/CN105347720B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279219A (en) * | 1999-06-24 | 2001-01-10 | 武汉可锐思新材料科技有限公司 | Ardealite setting retarder for cement and its preparing process |
| CN1944315A (en) * | 2006-10-17 | 2007-04-11 | 徐奇威 | Retarder for cement production and its preparing method |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
Non-Patent Citations (2)
| Title |
|---|
| 刘程 等: "《表面活性剂性质理论与应用》", 30 June 2003, 北京工业大学出版社 * |
| 黄柏宗: "《黄柏宗教授油井固井研究专集》", 30 November 1998, 石油工业出版社 * |
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| CN105347720B (en) | 2018-06-12 |
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