CN106380097A - Method for preparation of water-retaining high viscosity gypsum powder from desulfurized gypsum - Google Patents
Method for preparation of water-retaining high viscosity gypsum powder from desulfurized gypsum Download PDFInfo
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- CN106380097A CN106380097A CN201610734952.5A CN201610734952A CN106380097A CN 106380097 A CN106380097 A CN 106380097A CN 201610734952 A CN201610734952 A CN 201610734952A CN 106380097 A CN106380097 A CN 106380097A
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- gypsum
- filtering residue
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- gypsum fibrosum
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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
- C04B11/262—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke waste gypsum other than phosphogypsum
- C04B11/264—Gypsum from the desulfurisation of flue gases
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
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Abstract
Belonging to the technical field of gypsum powder preparation, the invention discloses a method for preparation of water-retaining high viscosity gypsum powder from desulfurized gypsum. The method includes: pretreating desulfurized gypsum with hydrochloric acid, then mixing the pretreatment product with hydrogen peroxide, conducting high temperature compound oxidation to remove calcium sulfite, and utilizing amino acid-rich lotus root slices and soybeans to conduct blend fermentation to obtain a fermentation broth, then taking garcinia cambogia full of hydroxy citric acid to conduct juicing, utilizing the juice and the fermentation broth to modify the oxidized and desulfurized gypsum under the action of microorganisms, adding hydrophilic amino and a variety of active groups on the gypsum surface to increase the chemical bonding force between the gypsum and the substrate and the water retention of the gypsum, then carrying out Buchner funnel filtering, washing, drying and grinding, thus obtaining the gypsum powder. The method provided by the invention has simple preparation steps, effectively solves the problem that when desulfurized gypsum is directly subjected to high temperature treatment and then added with water to be prepared into a slurry for use, the water retention and adhesion are poor, and bleeding and segregation phenomena do not occur.
Description
Technical field
The present invention relates to a kind of method preparing water conservation high viscosity Gypsum Fibrosum powder using desulfurated plaster, belong to Gypsum Fibrosum powder preparation skill
Art field.
Background technology
Desulfurated plaster is by the waste material producing after Coal,steam plant with FGD.According to related data statistics, annual desulfurated plaster
Produce per year out more than 20,000,000 tons, discharge not only a large amount of land occupation resources of these Litters, costly, and in Gypsum Fibrosum
Harmful substance also result in severe contamination to environment, and also discharge is put enterprise and brought great burden simultaneously.Due to desulfurated plaster grain
Degree is little, and 90% concentrates on less than 70 μm, and specific surface area is generally in 1400～1600cm2Between/g, there is higher fineness, therefore
Can directly use after desulfurated plaster high-temperature calcination.But the crystallization due to desulfurated plaster is freely formed in the solution, crystallization is relatively
For complete and uniform, crystalline solid is existed with single granule, and granule size is visibly homogeneous, and crystal grain great majority are round pie,
Also small part is had to be in short cylinder structure.Particle size distribution is narrow, and more than 70% granule concentrates on 40～60 μm of region, granule
Level is joined poor.After therefore being added water with the Gypsum Fibrosum powder that desulphurization building gypsum is directly prepared, slurry workability is poor, bleeding segregation phenomenon is tight
Weight.Because drawbacks described above leads to gypsum slurry poor water retention property, low intensity and skewness, coat of plaster bonding is insecure, easily
The phenomenons such as cracking, therefore desulfurated plaster are not suitable for directly configuring Gypsum Fibrosum powder, need to eliminate drawbacks described above after treatment.
Content of the invention
The technical problem to be solved：It is configured to slurry for adding water after the direct high-temperature process of current desulfurated plaster
Use, water-retaining property and cementability are poor, the drawbacks of lead to bleeding segregation phenomenon serious, there is provided one kind hydrochloric acid enters to desulfurated plaster
Row pretreatment, then with hydrogen peroxide mixing, remove calcium sulfite therein through high temperature combined oxidation, and using the Rhizoma Nelumbinis rich in aminoacid
Piece and Semen Glyciness blending fermentation obtain fermentation liquid, then take the Fructus Resina garciniae being full of hydroxycitric acid to squeeze the juice, with fermentation liquid in microorganism
Under effect, oxidation sweetening Gypsum Fibrosum is modified, increases hydrophilic amino and the various active group of gypsum surface, make Gypsum Fibrosum
Increase Chemical bonding and between matrix, the addition of hydrophilic group simultaneously also increases the water-retaining property of Gypsum Fibrosum, efficiently solves desulfurization
Add water after the direct high-temperature process of Gypsum Fibrosum and be configured to slurry use, the problem of water-retaining property and cementability difference, no bleeding segregation phenomenon is sent out
Raw.
For solving above-mentioned technical problem, the present invention using technical scheme as described below is：
（1）Weigh 700～800g desulfurated plaster, the concentration being dipped in 5～10 times of its gross mass is in 0.5mol/L hydrochloric acid, shakes
After bed vibration dipping 2～3h, it is filtrated to get filtering residue, filtering residue is put into baking oven, 30～40min is dried at 65～75 DEG C, obtains
Filtering residue is dried；
（2）The above-mentioned filtering residue and mass fraction of being dried is 30% hydrogen peroxide in mass ratio 3:After 1 is mixed, wrapped up with preservative film,
Be placed under sunlight being exposed to the sun 6～8h, then the filtering residue after being exposed to the sun is put into Muffle furnace, calcines 1～2h, obtain at 400～500 DEG C
Oxidation sweetening Gypsum Fibrosum, standby；
（3）Weigh 200～300g Rhizoma Nelumbinis, be manually cut into the thin slice that thickness is 5～8mm, then weigh 50～100g Semen Glyciness and put into wooden barrel
In, add water in bucket until be totally submerged Semen Glyciness, be standing and soak for overnight, the Semen Glyciness after soaking are put into and in mortar, grinds 15～
20min, obtains pasty state Semen Glyciness mud, the pasty state Semen Glyciness bod is entered in the hole of Rhizoma Nelumbinis slice, then Rhizoma Nelumbinis slice is laid in vial, airtight
After bottleneck, it is heat-preservation fermentation 30～40 days in 30～35 DEG C of greenhouses that vial is placed on temperature；
（4）After above-mentioned fermentation ends, filter and remove filtering residue, obtain fermentation liquid, after weighing 100～200g Fructus Resina garciniae enucleation, use
Juice extractor is squeezed the juice, and is filtrated to get filtrate, by volume for 5:1, by fermentation liquid and filtrate mix homogeneously, obtains modification liquid；
（5）It is 3 in mass ratio:1, standby oxidation sweetening Gypsum Fibrosum and modification liquid are added sequentially in fermentation tank, by inoculum concentration
For 9% and 11%, respectively bacillus subtilises and escherichia coli are sequentially ingressed in oxidation sweetening Gypsum Fibrosum, then fermentation tank is put into 30
Heat-preservation fermentation modification 3～4 weeks in～40 DEG C of greenhouses；
（6）After modification terminates, modified gypsum is put on a buchner funnel, use respectively dehydrated alcohol and deionized water rinsing 10～
15min, filtering residue is put into baking oven, 3～5h is dried at 105～110 DEG C, then with, after corundum mortar grinder 1～2h, crossing 100 mesh
Sieve, the powder that will sieve packs, and after packaging, obtains final product water conservation high viscosity Gypsum Fibrosum powder.
The application process of the present invention：In mass ratio 1:1.2～1：1.4, the water conservation high viscosity stone that water is obtained with the present invention
Cream powder is uniformly mixed, and obtains slurry, then removes the dust on required plaster base surface, after spot, coated slurry with trowel
In required plaster base surface, control coating thickness is 5～7mm, after the completion of coating, solidifies 10～15min, controls coating thickness
For 13～15mm, it is coated with one layer, compression is floating, after the completion of plastering, after standing solidification 24～26h, maintenance 2～3 days.Should
Gypsum Fibrosum powder good water-retaining property, after adding water, slurry caking property is strong, comprcssive strength >=82kg/cm2, rupture strength is >=28kg/cm2, no secrete
Water isolation phenomenon occurs, and is worthy to be popularized and uses.
Compared with additive method, Advantageous Effects are the present invention：
（1）Preparation process of the present invention is simple, products obtained therefrom good water-retaining property；
（2）After adding water, slurry caking property is strong, and intensity is high, and no bleeding segregation phenomenon occurs.
Specific embodiment
Weigh 700～800g desulfurated plaster first, the concentration being dipped in 5～10 times of its gross mass is 0.5mol/L hydrochloric acid
In, after shaking table vibration dipping 2～3h, it is filtrated to get filtering residue, filtering residue is put into baking oven, at 65～75 DEG C, 30～40min is dried,
Obtain filtering residue is dried；Then by above-mentioned filtering residue and the mass fraction of being dried for 30% hydrogen peroxide in mass ratio 3:After 1 is mixed, use
Preservative film wraps up, and be placed under sunlight being exposed to the sun 6～8h, then the filtering residue after being exposed to the sun is put into Muffle furnace, forges at 400～500 DEG C
Burn 1～2h, obtain oxidation sweetening Gypsum Fibrosum, standby；Weigh 200～300g Rhizoma Nelumbinis again, be manually cut into the thin slice that thickness is 5～8mm, then
Weigh 50～100g Semen Glyciness to put in wooden barrel, adding water in bucket until being totally submerged Semen Glyciness, being standing and soak for overnight, after soaking
Semen Glyciness put in mortar grinding 15～20min, obtain pasty state Semen Glyciness mud, the pasty state Semen Glyciness bod entered in the hole of Rhizoma Nelumbinis slice, then
Rhizoma Nelumbinis slice is laid in vial, after airtight bottleneck, by vial be placed on temperature be heat-preservation fermentation 30 in 30～35 DEG C of greenhouses～
40 days；After above-mentioned fermentation ends, filter and remove filtering residue, obtain fermentation liquid, after weighing 100～200g Fructus Resina garciniae enucleation, with squeezing
Juice machine is squeezed the juice, and is filtrated to get filtrate, by volume for 5:1, by fermentation liquid and filtrate mix homogeneously, obtains modification liquid；Press quality again
Than for 3:1, standby oxidation sweetening Gypsum Fibrosum and modification liquid are added sequentially in fermentation tank, are 9% and 11% by inoculum concentration, respectively
Bacillus subtilises and escherichia coli are sequentially ingressed in oxidation sweetening Gypsum Fibrosum, then fermentation tank is put into guarantor in 30～40 DEG C of greenhouses
Modified 3～4 weeks of temperature fermentation；After finally modification terminates, modified gypsum is put on a buchner funnel, respectively with dehydrated alcohol and go from
Sub- water rinses 10～15min, and filtering residue is put into baking oven, 3～5h is dried at 105～110 DEG C, then with corundum mortar grinder 1～
After 2h, cross 100 mesh sieves, the powder that will sieve packs, and after packaging, obtains final product water conservation high viscosity Gypsum Fibrosum powder.
Example 1
Weigh 700g desulfurated plaster first, the concentration being dipped in 5 times of its gross mass is in 0.5mol/L hydrochloric acid, shaking table vibration leaching
After stain 2h, it is filtrated to get filtering residue, filtering residue is put into baking oven, at 65 DEG C, 30min is dried, obtain filtering residue is dried；Then will be above-mentioned
It is 30% hydrogen peroxide in mass ratio 3 that filtering residue and mass fraction are dried:After 1 is mixed, with preservative film parcel, it is placed under sunlight
Be exposed to the sun 6h, then the filtering residue after being exposed to the sun is put into Muffle furnace, calcines 1h, obtain oxidation sweetening Gypsum Fibrosum at 400 DEG C, standby；Claim again
Take 200g Rhizoma Nelumbinis, be manually cut into the thin slice that thickness is 5mm, then weigh 50g Semen Glyciness and put in wooden barrel, add water until by Semen Glyciness in bucket
It is totally submerged, be standing and soak for overnight, the Semen Glyciness after soaking being put into grinding 15min in mortar, obtaining pasty state Semen Glyciness mud, by pasty state
The Semen Glyciness bod enters in the hole of Rhizoma Nelumbinis slice, then Rhizoma Nelumbinis slice is laid in vial, and after airtight bottleneck, it is 30 that vial is placed on temperature
Heat-preservation fermentation 30 days in DEG C greenhouse；After above-mentioned fermentation ends, filter and remove filtering residue, obtain fermentation liquid, weigh 100g Fructus Resina garciniae
After enucleation, squeezed the juice with juice extractor, be filtrated to get filtrate, by volume for 5:1, by fermentation liquid and filtrate mix homogeneously, obtains modification
Liquid；It is 3 more in mass ratio:1, standby oxidation sweetening Gypsum Fibrosum and modification liquid are added sequentially in fermentation tank, by inoculum concentration are
9% and 11%, respectively bacillus subtilises and escherichia coli are sequentially ingressed in oxidation sweetening Gypsum Fibrosum, then fermentation tank is put into 30 DEG C
Modified 3 weeks of heat-preservation fermentation in greenhouse；After finally modification terminates, modified gypsum is put on a buchner funnel, use dehydrated alcohol respectively
With deionized water rinsing 10min, filtering residue is put into baking oven, at 105 DEG C, 3h is dried, then with, after corundum mortar grinder 1h, crossing 100
Mesh sieve, the powder that will sieve packs, and after packaging, obtains final product water conservation high viscosity Gypsum Fibrosum powder.
In mass ratio 1:1.2, the water conservation high viscosity Gypsum Fibrosum powder that water is obtained with the present invention is uniformly mixed, and obtains slurry,
Remove the dust on required plaster base surface again, after spot, with trowel, slurry be coated on required plaster base surface, control and apply
Covering thickness is 5mm, after the completion of coating, solidifies 10min, control coating thickness is 13mm, is coated with one layer, compression is floating, plasters
After the completion of, after standing solidification 24h, maintenance 2 days.This Gypsum Fibrosum powder good water-retaining property, after adding water, slurry caking property is strong, comprcssive strength
For 82kg/cm2, rupture strength is 28kg/cm2, no bleeding segregation phenomenon occurs, and is worthy to be popularized and uses.
Example 2
Weigh 750g desulfurated plaster first, the concentration being dipped in 8 times of its gross mass is in 0.5mol/L hydrochloric acid, shaking table vibration leaching
After stain 3h, it is filtrated to get filtering residue, filtering residue is put into baking oven, at 70 DEG C, 35min is dried, obtain filtering residue is dried；Then will be above-mentioned
It is 30% hydrogen peroxide in mass ratio 3 that filtering residue and mass fraction are dried:After 1 is mixed, with preservative film parcel, it is placed under sunlight
Be exposed to the sun 7h, then the filtering residue after being exposed to the sun is put into Muffle furnace, calcines 2h, obtain oxidation sweetening Gypsum Fibrosum at 450 DEG C, standby；Claim again
Take 250g Rhizoma Nelumbinis, be manually cut into the thin slice that thickness is 7mm, then weigh 75g Semen Glyciness and put in wooden barrel, add water until by Semen Glyciness in bucket
It is totally submerged, be standing and soak for overnight, the Semen Glyciness after soaking being put into grinding 18min in mortar, obtaining pasty state Semen Glyciness mud, by pasty state
The Semen Glyciness bod enters in the hole of Rhizoma Nelumbinis slice, then Rhizoma Nelumbinis slice is laid in vial, and after airtight bottleneck, it is 33 that vial is placed on temperature
Heat-preservation fermentation 35 days in DEG C greenhouse；After above-mentioned fermentation ends, filter and remove filtering residue, obtain fermentation liquid, weigh 150g Fructus Resina garciniae
After enucleation, squeezed the juice with juice extractor, be filtrated to get filtrate, by volume for 5:1, by fermentation liquid and filtrate mix homogeneously, obtains modification
Liquid；It is 3 more in mass ratio:1, standby oxidation sweetening Gypsum Fibrosum and modification liquid are added sequentially in fermentation tank, by inoculum concentration are
9% and 11%, respectively bacillus subtilises and escherichia coli are sequentially ingressed in oxidation sweetening Gypsum Fibrosum, then fermentation tank is put into 35 DEG C
Modified 4 weeks of heat-preservation fermentation in greenhouse；After finally modification terminates, modified gypsum is put on a buchner funnel, use dehydrated alcohol respectively
With deionized water rinsing 13min, filtering residue is put into baking oven, at 108 DEG C, 4h is dried, then with, after corundum mortar grinder 2h, crossing 100
Mesh sieve, the powder that will sieve packs, and after packaging, obtains final product water conservation high viscosity Gypsum Fibrosum powder.
In mass ratio 1:1.3, the water conservation high viscosity Gypsum Fibrosum powder that water is obtained with the present invention is uniformly mixed, and obtains slurry,
Remove the dust on required plaster base surface again, after spot, with trowel, slurry be coated on required plaster base surface, control and apply
Covering thickness is 6mm, after the completion of coating, solidifies 13min, control coating thickness is 14mm, is coated with one layer, compression is floating, plasters
After the completion of, after standing solidification 25h, maintenance 3 days.This Gypsum Fibrosum powder good water-retaining property, after adding water, slurry caking property is strong, comprcssive strength
For 86kg/cm2, rupture strength is 35kg/cm2, no bleeding segregation phenomenon occurs, and is worthy to be popularized and uses.
Example 3
Weigh 800g desulfurated plaster first, the concentration being dipped in 10 times of its gross mass is in 0.5mol/L hydrochloric acid, and shaking table vibrates
After dipping 3h, it is filtrated to get filtering residue, filtering residue is put into baking oven, at 75 DEG C, 40min is dried, obtain filtering residue is dried；Then will be upper
Stating and filtering residue and mass fraction are dried is 30% hydrogen peroxide in mass ratio 3:After 1 is mixed, with preservative film parcel, it is placed in sunlight
Under be exposed to the sun 8h, then the filtering residue after being exposed to the sun is put into Muffle furnace, calcines 2h at 500 DEG C, obtain oxidation sweetening Gypsum Fibrosum, standby；Again
Weigh 300g Rhizoma Nelumbinis, being manually cut into the thin slice that thickness is 8mm, then weigh 100g Semen Glyciness and put in wooden barrel, adding water in bucket until inciting somebody to action
Semen Glyciness are totally submerged, and are standing and soak for overnight, the Semen Glyciness after soaking being put into grinding 20min in mortar, obtaining pasty state Semen Glyciness mud, will
The pasty state Semen Glyciness bod enters in the hole of Rhizoma Nelumbinis slice, then Rhizoma Nelumbinis slice is laid in vial, after airtight bottleneck, vial is placed on temperature
For heat-preservation fermentation in 35 DEG C of greenhouses 40 days；After above-mentioned fermentation ends, filter and remove filtering residue, obtain fermentation liquid, weigh 200g rattan
After yellow fruit enucleation, squeezed the juice with juice extractor, be filtrated to get filtrate, by volume for 5:1, by fermentation liquid and filtrate mix homogeneously, obtains
Modification liquid；It is 3 more in mass ratio:1, standby oxidation sweetening Gypsum Fibrosum and modification liquid are added sequentially in fermentation tank, by inoculation
Measure as 9% and 11%, respectively bacillus subtilises and escherichia coli are sequentially ingressed in oxidation sweetening Gypsum Fibrosum, then fermentation tank is put into
Modified 3 weeks of heat-preservation fermentation in 30 DEG C of greenhouses；After finally modification terminates, modified gypsum is put on a buchner funnel, respectively with anhydrous
Ethanol and deionized water rinsing 10min, filtering residue is put into baking oven, 3h is dried at 105 DEG C, then with after corundum mortar grinder 1h,
Cross 100 mesh sieves, the powder that will sieve packs, and after packaging, obtains final product water conservation high viscosity Gypsum Fibrosum powder.
In mass ratio 1:1.4, the water conservation high viscosity Gypsum Fibrosum powder that water is obtained with the present invention is uniformly mixed, and obtains slurry,
Remove the dust on required plaster base surface again, after spot, with trowel, slurry be coated on required plaster base surface, control and apply
Covering thickness is 7mm, after the completion of coating, solidifies 15min, control coating thickness is 15mm, is coated with one layer, compression is floating, plasters
After the completion of, after standing solidification 26h, maintenance 3 days.This Gypsum Fibrosum powder good water-retaining property, after adding water, slurry caking property is strong, comprcssive strength
For 91kg/cm2, rupture strength is 40kg/cm2, no bleeding segregation phenomenon occurs, and is worthy to be popularized and uses.
Claims (1)
1. a kind of prepare the method for water conservation high viscosity Gypsum Fibrosum powder it is characterised in that concrete preparation process is using desulfurated plaster：
（1）Weigh 700～800g desulfurated plaster, the concentration being dipped in 5～10 times of its gross mass is in 0.5mol/L hydrochloric acid, shakes
After bed vibration dipping 2～3h, it is filtrated to get filtering residue, filtering residue is put into baking oven, 30～40min is dried at 65～75 DEG C, obtains
Filtering residue is dried；
（2）The above-mentioned filtering residue and mass fraction of being dried is 30% hydrogen peroxide in mass ratio 3:After 1 is mixed, wrapped up with preservative film,
Be placed under sunlight being exposed to the sun 6～8h, then the filtering residue after being exposed to the sun is put into Muffle furnace, calcines 1～2h, obtain at 400～500 DEG C
Oxidation sweetening Gypsum Fibrosum, standby；
（3）Weigh 200～300g Rhizoma Nelumbinis, be manually cut into the thin slice that thickness is 5～8mm, then weigh 50～100g Semen Glyciness and put into wooden barrel
In, add water in bucket until be totally submerged Semen Glyciness, be standing and soak for overnight, the Semen Glyciness after soaking are put into and in mortar, grinds 15～
20min, obtains pasty state Semen Glyciness mud, the pasty state Semen Glyciness bod is entered in the hole of Rhizoma Nelumbinis slice, then Rhizoma Nelumbinis slice is laid in vial, airtight
After bottleneck, it is heat-preservation fermentation 30～40 days in 30～35 DEG C of greenhouses that vial is placed on temperature；
（4）After above-mentioned fermentation ends, filter and remove filtering residue, obtain fermentation liquid, after weighing 100～200g Fructus Resina garciniae enucleation, use
Juice extractor is squeezed the juice, and is filtrated to get filtrate, by volume for 5:1, by fermentation liquid and filtrate mix homogeneously, obtains modification liquid；
（5）It is 3 in mass ratio:1, standby oxidation sweetening Gypsum Fibrosum and modification liquid are added sequentially in fermentation tank, by inoculum concentration
For 9% and 11%, respectively bacillus subtilises and escherichia coli are sequentially ingressed in oxidation sweetening Gypsum Fibrosum, then fermentation tank is put into 30
Heat-preservation fermentation modification 3～4 weeks in～40 DEG C of greenhouses；
（6）After modification terminates, modified gypsum is put on a buchner funnel, use respectively dehydrated alcohol and deionized water rinsing 10～
15min, filtering residue is put into baking oven, 3～5h is dried at 105～110 DEG C, then with, after corundum mortar grinder 1～2h, crossing 100 mesh
Sieve, the powder that will sieve packs, and after packaging, obtains final product water conservation high viscosity Gypsum Fibrosum powder.
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| CN201610734952.5A CN106380097B (en) | 2016-08-28 | 2016-08-28 | A kind of method that water conservation high viscosity land plaster is prepared using desulfurated plaster |
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| CN201610734952.5A CN106380097B (en) | 2016-08-28 | 2016-08-28 | A kind of method that water conservation high viscosity land plaster is prepared using desulfurated plaster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104107A (en) * | 2017-12-12 | 2018-06-01 | 周荣 | A kind of method using zeolite and Flyash liquefaction sand foundation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496903A (en) * | 2013-09-24 | 2014-01-08 | 安徽锐视光电技术有限公司 | Thermal mortar |
| CN105130358A (en) * | 2015-09-02 | 2015-12-09 | 常州市长宇实用气体有限公司 | Method for producing gypsum plaster through desulfurization gypsum |
| CN105585287A (en) * | 2015-12-17 | 2016-05-18 | 梅庆波 | Method for preparing anti-crack mortar |
-
2016
- 2016-08-28 CN CN201610734952.5A patent/CN106380097B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496903A (en) * | 2013-09-24 | 2014-01-08 | 安徽锐视光电技术有限公司 | Thermal mortar |
| CN105130358A (en) * | 2015-09-02 | 2015-12-09 | 常州市长宇实用气体有限公司 | Method for producing gypsum plaster through desulfurization gypsum |
| CN105585287A (en) * | 2015-12-17 | 2016-05-18 | 梅庆波 | Method for preparing anti-crack mortar |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104107A (en) * | 2017-12-12 | 2018-06-01 | 周荣 | A kind of method using zeolite and Flyash liquefaction sand foundation |
| CN108104107B (en) * | 2017-12-12 | 2020-08-18 | 上海先科桥梁隧道检测加固工程技术有限公司 | Method for reinforcing liquefied sandy soil foundation by using zeolite and fly ash |
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| CN106380097B (en) | 2018-01-12 |
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