CN104177048B - A kind of method of corn straw modification fibre modification fluorgypsum - Google Patents
A kind of method of corn straw modification fibre modification fluorgypsum Download PDFInfo
- Publication number
- CN104177048B CN104177048B CN201410390518.0A CN201410390518A CN104177048B CN 104177048 B CN104177048 B CN 104177048B CN 201410390518 A CN201410390518 A CN 201410390518A CN 104177048 B CN104177048 B CN 104177048B
- Authority
- CN
- China
- Prior art keywords
- modification
- fluorgypsum
- calcining
- parts
- corn straw
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method of corn straw modification fibre modification fluorgypsum, comprising: at 120-150 DEG C of thermal treatment 2-4h after fluorgypsum grinds and sieves; Add the rhombspar after the alum after calcium hydroxide, blast-furnace slag, calcining, calcining in fluorgypsum after thermal treatment, semi-hydrated gypsum, sodium oxalate carry out a chemical modification; At 250-300 DEG C of calcining 0.5-1.5h; Add polyvinyl alcohol in fluorgypsum after firing, corn straw modification fiber, calcium acrylate carry out secondary chemical modification; The preparation process of corn straw modification fiber: maize straw is put into hydrogen peroxide after shearing and soaked, cleaning is to neutral, aqueous sodium hydroxide solution insulated and stirred is put into after oven dry, filter, by residue washing to neutral, put into 2-ethylhexyl glycidyl ester afterwards to soak, after filtration, filter residue is dried.The fluorgypsum utilizing present method modified is short for time of coagulation, and mechanical strength is excellent, makes discarded fluorgypsum turn waste into wealth simultaneously.
Description
Technical field
The present invention relates to gypsum technical field, particularly relate to a kind of method of corn straw modification fibre modification fluorgypsum.
Background technology
Fluorgypsum is the principal by product in hydrofluoric acid and sodium fluoroaluminate production process, mainly originates from inorganic fluoride and organic fluoride factory and other Acid of Hydrofluoric Acid Production factory.Often produce 1t hydrofluoric acid and generate the anhydrous fluorgypsum of about 3.6t.The main component of fluorgypsum is calcium sulfate, and containing partially fluorinated calcium and other fluorochemicals, and H sometimes
2sO
4content is very high, makes the fluorgypsum of discharging in acid, belongs to severe corrosive poisonous and harmful refuse, and the fluorgypsum not adding process directly can not be put and abandon, and is also difficult to be utilized.Again because the lower and dissolution rate of fluorgypsum solubleness is slow, time of coagulation is very long, and hydration and hardening body intensity is very little, its application of these drawbacks limit.At present, except part fluorgypsum is utilized, major part is stored up as general solid waste, not only land occupation, and simultaneously objectionable impurities wherein also can produce water body and pollute, and produces threaten physical environment.Therefore, how to carry out modification to fluorgypsum, solve fluorgypsum history and store up problem, make it turn waste into wealth, the comprehensive utilization realizing gypsum resource is a very urgent problems.
Summary of the invention
The present invention proposes a kind of method of corn straw modification fibre modification fluorgypsum, modified fluorgypsum is short for time of coagulation, and mechanical strength is excellent, makes discarded fluorgypsum turn waste into wealth simultaneously.
The present invention proposes a kind of method of corn straw modification fibre modification fluorgypsum, comprise the following steps:
S1, put into grinding in ball grinder pulverize producing the waste slag of fluorine gypsum after hydrofluoric acid, heat-treat after sieving, thermal treatment temp is 120-150 DEG C, and the time is 2-4h;
S2, alum is put into retort furnace calcine, calcining temperature is 580-630 DEG C, and calcination time is 0.5-1.2h, is cooled to grinding after room temperature, sieving for standby; Rhombspar is put into retort furnace calcine, calcining temperature is 680-720 DEG C, and calcination time is 0.8-1.3h, is cooled to grinding, sieving for standby after room temperature;
Rhombspar, 0.2-0.5 part semi-hydrated gypsum, 0.2-1.2 part sodium oxalate after calcining in the alum in 3-6 part calcium hydroxide, 0.8-2 part blast-furnace slag, 1-3 part S2 after calcining, 0.5-2 part S2 is added in S3, fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3-5h carries out a chemical modification, then 250-300 DEG C of calcining, calcination time is 0.5-1.5h;
S4, maize straw modification is obtained corn straw modification fiber, modifying process is specific as follows: segment maize straw being cut into 35-50mm, take out after the hydrogen peroxide putting into 2-3wt% soaks 80-100min, utilize clean water to neutral, put into baking oven, dry under 80-110 DEG C of condition, then put into aqueous sodium hydroxide solution, make the mass ratio of sodium hydroxide and maize straw be 1:3-5; Afterwards under 70-85 DEG C of condition, insulated and stirred 70-100min, filters, and filter residue is extremely neutral with clear water washing, puts into 2-ethylhexyl glycidyl ester afterwards, under 55-65 DEG C of condition, soaks 70-90min, dried by filter residue after filtration in 80-100 DEG C of baking oven;
Add 1-5 part polyvinyl alcohol in S5, fluorgypsum by weight in 100 parts of S4 after calcining, 3-8 part corn straw modification fiber, 1-3 part calcium acrylate carry out secondary chemical modification;
S6, the fluorgypsum carrying out secondary chemical modification ground obtain modification fluorgypsum in S5.
Preferably, in S1, thermal treatment temp is 130-145 DEG C, and the time is 2.2-3.5h.
Preferably, in S1, thermal treatment temp is 138 DEG C, and the time is 3.2h.
Preferably, in S2, alum is put into retort furnace and calcines, calcining temperature is 600-620 DEG C, and calcination time is 0.8-1.0h; Rhombspar is put into retort furnace calcine, calcining temperature is 700-710 DEG C, and calcination time is 1.0-1.2h.
Preferably, in S2, alum is put into retort furnace and calcines, calcining temperature is 612 DEG C, and calcination time is 0.9h; Rhombspar is put into retort furnace calcine, calcining temperature is 705 DEG C, and calcination time is 1.2h.
Preferably, in S3, rhombspar, 0.25-0.35 part semi-hydrated gypsum, 0.6-1.0 part sodium oxalate after calcining in the alum in 4-5 part calcium hydroxide, 1.2-1.5 part blast-furnace slag, 1.5-2.2 part S2 after calcining, 1.2-1.8 part S2 is added in fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3.2-4h carries out a chemical modification, then 280-290 DEG C of calcining, calcination time is 0.8-1.3h.
Preferably, in S3, the rhombspar in the alum in 4.3 parts of calcium hydroxides, 1.3 parts of blast-furnace slags, 1.7 parts of S2 after calcining, 1.6 parts of S2 after calcining, 0.3 part of semi-hydrated gypsum, 0.8 part of sodium oxalate is added in fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3.5h carries out a chemical modification, then 288 DEG C of calcinings, calcination time is 1.2h.
Preferably, in S4, in described aqueous sodium hydroxide solution, the substance withdrawl syndrome of sodium hydroxide is 4-6mol/L.
Preferably, in S5, add 3-4 part polyvinyl alcohol in the fluorgypsum by weight in 100 parts of S4 after calcining, 5-7 part corn straw modification fiber, 1.8-2.3 part calcium acrylate carry out secondary chemical modification.
Preferably, in S5, add 3.5 parts of polyvinyl alcohol in the fluorgypsum by weight in 100 parts of S4 after calcining, 6.2 parts of corn straw modification fibers, 2.0 parts of calcium acrylates carry out secondary chemical modification.
The method of corn straw modification fibre modification fluorgypsum of the present invention, have employed and grind and thermal treatment, change, destroy the crystal lattice of modification fluorgypsum, increase its lattice distortion and defect, increase the irregularity of its specific surface area and surface tissue, improve the hydration activity of modification fluorgypsum, facilitate the hardening of modification fluorgypsum, have employed twice chemical modifying process, in a chemical modification, with the addition of the rhombspar after the alum after calcining and calcining, make in modification fluorgypsum, dihydrate gypsum crystal increasing number, and crystal development is complete, length-to-diameter ratio increases, and how in needle-like, reduces obvious bulk or bulk crystalline, between crystal, overlap joint is fine and close, improves the intensity of modified fluorgypsum, in secondary chemical modification, with the addition of corn straw modification fiber, modification makes the surface of the original rough porous of corn stalk fiber be filled, and improves effective contact area of corn stalk fiber and fluorgypsum matrix, improves the interface bond strength of corn stalk fiber and fluorgypsum matrix, corn straw modification fiber is evenly distributed in fluorgypsum, and each fibrous bundle is respectively to distribution, improves folding strength and the ultimate compression strength of fluorgypsum, in addition, with the addition of polyvinyl alcohol, it can shrink and form gel, after modified fluorgypsum adds water and mixes, polyvinyl alcohol can in the dispersed slurry of fluorgypsum after modification, it can fade away along with the consumption of moisture in fluorgypsum hardenite and evaporation, form the regid gel with certain toughness, polyvinyl alcohol gel forms the irregular nethike embrane with resistance effect gradually in fluorgypsum hardenite, fill the hole of fluorgypsum hardenite, improve the degree of compactness of fluorgypsum hardenite, even can close capillary porosity duct completely, block penetrating passage, improve the hardness of fluorgypsum hardenite, improve the water tolerance of stone fluorine cream hardenite.
The method of corn straw modification fibre modification fluorgypsum of the present invention, have selected suitable properties-correcting agent, controls the content of each composition in properties-correcting agent, and optimize modified technique, modified fluorgypsum is short for time of coagulation, and excellent in mechanical performance makes fluorgypsum turn waste into wealth.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
Embodiment 1
The method of corn straw modification fibre modification fluorgypsum of the present invention, comprises the following steps:
S1, put into grinding in ball grinder pulverize producing the waste slag of fluorine gypsum after hydrofluoric acid, heat-treat after sieving, thermal treatment temp is 120 DEG C, and the time is 4h;
S2, alum is put into retort furnace calcine, calcining temperature is 630 DEG C, and calcination time is 0.5h, is cooled to grinding after room temperature, sieving for standby; Rhombspar is put into retort furnace calcine, calcining temperature is 700 DEG C, and calcination time is 1.1h, is cooled to grinding, sieving for standby after room temperature;
The rhombspar in the alum in 6 parts of calcium hydroxides, 2 parts of blast-furnace slags, 1.2 parts of S2 after calcining, 0.5 part of S2 after calcining, 0.5 part of semi-hydrated gypsum, 1.1 parts of sodium oxalates are added in S3, fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3h carries out a chemical modification, then 300 DEG C of calcinings, calcination time is 0.5h;
S4, maize straw modification is obtained corn straw modification fiber, modifying process is specific as follows: segment maize straw being cut into 35mm, take out after the hydrogen peroxide putting into 3wt% soaks 80min, utilize clean water to neutral, put into baking oven, dry under 90 DEG C of conditions, then put into the aqueous sodium hydroxide solution of 4mol/L, make the mass ratio of sodium hydroxide and maize straw be 1:3; Afterwards under 70 DEG C of conditions, insulated and stirred 100min, filters, and filter residue is extremely neutral with clear water washing, puts into 2-ethylhexyl glycidyl ester afterwards, under 65 DEG C of conditions, soaks 70min, dried by filter residue after filtration in 92 DEG C of baking ovens;
S5, by weight in 100 parts of S4 calcining after fluorgypsum in add 5 parts of polyvinyl alcohol, 8 parts of corn straw modification fibers, 1 part of calcium acrylate carry out secondary chemical modification;
S6, the fluorgypsum carrying out secondary chemical modification ground obtain described modification fluorgypsum in S5.
Embodiment 2
The method of corn straw modification fibre modification fluorgypsum of the present invention, comprises the following steps:
S1, put into grinding in ball grinder pulverize producing the waste slag of fluorine gypsum after hydrofluoric acid, heat-treat after sieving, thermal treatment temp is 150 DEG C, and the time is 2h;
S2, alum is put into retort furnace calcine, calcining temperature is 588 DEG C, and calcination time is 1.1h, is cooled to grinding after room temperature, sieving for standby; Rhombspar is put into retort furnace calcine, calcining temperature is 680 DEG C, and calcination time is 1.3h, is cooled to grinding, sieving for standby after room temperature;
The rhombspar in the alum in 4 parts of calcium hydroxides, 1.3 parts of blast-furnace slags, 3 parts of S2 after calcining, 2 parts of S2 after calcining, 0.36 part of semi-hydrated gypsum, 0.2 part of sodium oxalate is added in S3, fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 5h carries out a chemical modification, then 266 DEG C of calcinings, calcination time is 1.2h;
S4, maize straw modification is obtained corn straw modification fiber, modifying process is specific as follows: segment maize straw being cut into 38mm, take out after the hydrogen peroxide putting into 2wt% soaks 100min, utilize clean water to neutral, put into baking oven, dry under 110 DEG C of conditions, then put into the aqueous sodium hydroxide solution of 6mol/L, make the mass ratio of sodium hydroxide and maize straw be 1:5; Afterwards under 85 DEG C of conditions, insulated and stirred 70min, filters, and filter residue is extremely neutral with clear water washing, puts into 2-ethylhexyl glycidyl ester afterwards, under 60 DEG C of conditions, soaks 82min, dried by filter residue after filtration in 80 DEG C of baking ovens;
S5, by weight in 100 parts of S4 calcining after fluorgypsum in add 1 part of polyvinyl alcohol, 4.2 parts of corn straw modification fibers, 3 parts of calcium acrylates carry out secondary chemical modification;
S6, the fluorgypsum carrying out secondary chemical modification ground obtain described modification fluorgypsum in S5.
Embodiment 3
The method of corn straw modification fibre modification fluorgypsum of the present invention, comprises the following steps:
S1, put into grinding in ball grinder pulverize producing the waste slag of fluorine gypsum after hydrofluoric acid, heat-treat after sieving, thermal treatment temp is 128 DEG C, and the time is 3h;
S2, alum is put into retort furnace calcine, calcining temperature is 580 DEG C, and calcination time is 1.2h, is cooled to grinding after room temperature, sieving for standby; Rhombspar is put into retort furnace calcine, calcining temperature is 720 DEG C, and calcination time is 0.8h, is cooled to grinding, sieving for standby after room temperature;
The rhombspar in the alum in 3 parts of calcium hydroxides, 0.8 part of blast-furnace slag, 1 part of S2 after calcining, 1.6 parts of S2 after calcining, 0.2 part of semi-hydrated gypsum, 1.2 parts of sodium oxalates are added in S3, fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3.5h carries out a chemical modification, then 250 DEG C of calcinings, calcination time is 1.5h;
S4, maize straw modification is obtained corn straw modification fiber, modifying process is specific as follows: segment maize straw being cut into 50mm, take out after the hydrogen peroxide putting into 2.3% soaks 86min, utilize clean water to neutral, put into baking oven, dry under 80 DEG C of conditions, then put into the aqueous sodium hydroxide solution of 4.5mol/L, make the mass ratio of sodium hydroxide and maize straw be 1:4; Afterwards under 76 DEG C of conditions, insulated and stirred 80min, filters, and filter residue is extremely neutral with clear water washing, puts into 2-ethylhexyl glycidyl ester afterwards, under 55 DEG C of conditions, soaks 90min, dried by filter residue after filtration in 100 DEG C of baking ovens;
S5, by weight in 100 parts of S4 calcining after fluorgypsum in add 3 parts of polyvinyl alcohol, 5 parts of corn straw modification fibers, 1.7 parts of calcium acrylates carry out secondary chemical modification;
S6, the fluorgypsum carrying out secondary chemical modification ground obtain described modification fluorgypsum in S5.
Embodiment 4
The method of corn straw modification fibre modification fluorgypsum of the present invention, comprises the following steps:
S1, put into grinding in ball grinder pulverize producing the waste slag of fluorine gypsum after hydrofluoric acid, heat-treat after sieving, thermal treatment temp is 138 DEG C, and the time is 3.2h;
S2, alum is put into retort furnace calcine, calcining temperature is 612 DEG C, and calcination time is 0.9h, is cooled to grinding after room temperature, sieving for standby; Rhombspar is put into retort furnace calcine, calcining temperature is 705 DEG C, and calcination time is 1.2h, is cooled to grinding, sieving for standby after room temperature;
The rhombspar in the alum in 4.3 parts of calcium hydroxides, 1.3 parts of blast-furnace slags, 1.7 parts of S2 after calcining, 1.6 parts of S2 after calcining, 0.3 part of semi-hydrated gypsum, 0.8 part of sodium oxalate is added in S3, fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3.5h carries out a chemical modification, then 288 DEG C of calcinings, calcination time is 1.2h;
S4, maize straw modification is obtained corn straw modification fiber, modifying process is specific as follows: segment maize straw being cut into 45mm, take out after the hydrogen peroxide putting into 2wt% soaks 92min, utilize clean water to neutral, put into baking oven, dry under 95 DEG C of conditions, then put into the aqueous sodium hydroxide solution of 5mol/L, make the mass ratio of sodium hydroxide and maize straw be 1:4; Afterwards under 78 DEG C of conditions, insulated and stirred 85min, filters, and filter residue is extremely neutral with clear water washing, puts into 2-ethylhexyl glycidyl ester afterwards, under 62 DEG C of conditions, soaks 82min, dried by filter residue after filtration in 93 DEG C of baking ovens;
S5, by weight in 100 parts of S4 calcining after fluorgypsum in add 3.5 parts of polyvinyl alcohol, 6.2 parts of corn straw modification fibers, 2.0 parts of calcium acrylates carry out secondary chemical modification;
S6, the fluorgypsum carrying out secondary chemical modification ground obtain described modification fluorgypsum in S5.
Claims (10)
1. a method for corn straw modification fibre modification fluorgypsum, is characterized in that, comprises the following steps:
S1, put into grinding in ball grinder pulverize producing the waste slag of fluorine gypsum after hydrofluoric acid, heat-treat after sieving, thermal treatment temp is 120-150 DEG C, and the time is 2-4h;
S2, alum is put into retort furnace calcine, calcining temperature is 580-630 DEG C, and calcination time is 0.5-1.2h, is cooled to grinding after room temperature, sieving for standby; Rhombspar is put into retort furnace calcine, calcining temperature is 680-720 DEG C, and calcination time is 0.8-1.3h, is cooled to grinding, sieving for standby after room temperature;
Rhombspar, 0.2-0.5 part semi-hydrated gypsum, 0.2-1.2 part sodium oxalate after calcining in the alum in 3-6 part calcium hydroxide, 0.8-2 part blast-furnace slag, 1-3 part S2 after calcining, 0.5-2 part S2 is added in S3, fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3-5h carries out a chemical modification, then 250-300 DEG C of calcining, calcination time is 0.5-1.5h;
S4, maize straw modification is obtained corn straw modification fiber, modifying process is specific as follows: segment maize straw being cut into 35-50mm, take out after the hydrogen peroxide putting into 2-3wt% soaks 80-100min, utilize clean water to neutral, put into baking oven, dry under 80-110 DEG C of condition, then put into aqueous sodium hydroxide solution, make the mass ratio of sodium hydroxide and maize straw be 1:3-5; Afterwards under 70-85 DEG C of condition, insulated and stirred 70-100min, filters, and filter residue is extremely neutral with clear water washing, puts into 2-ethylhexyl glycidyl ester afterwards, under 55-65 DEG C of condition, soaks 70-90min, dried by filter residue after filtration in 80-100 DEG C of baking oven;
Add 1-5 part polyvinyl alcohol in S5, fluorgypsum by weight in 100 parts of S4 after calcining, 3-8 part corn straw modification fiber, 1-3 part calcium acrylate carry out secondary chemical modification;
S6, the fluorgypsum carrying out secondary chemical modification ground obtain modification fluorgypsum in S5.
2. the method for corn straw modification fibre modification fluorgypsum according to claim 1, is characterized in that, in S1, thermal treatment temp is 130-145 DEG C, and the time is 2.2-3.5h.
3. the method for corn straw modification fibre modification fluorgypsum according to claim 2, is characterized in that, in S1, thermal treatment temp is 138 DEG C, and the time is 3.2h.
4. the method for the corn straw modification fibre modification fluorgypsum according to any one of claim 1-3, it is characterized in that, in S2, alum is put into retort furnace and calcines, calcining temperature is 600-620 DEG C, calcination time is 0.8-1.0h; Rhombspar is put into retort furnace calcine, calcining temperature is 700-710 DEG C, and calcination time is 1.0-1.2h.
5. according to the method for the corn straw modification fibre modification fluorgypsum described in claim 4, it is characterized in that, in S2, alum is put into retort furnace and calcines, calcining temperature is 612 DEG C, and calcination time is 0.9h; Rhombspar is put into retort furnace calcine, calcining temperature is 705 DEG C, and calcination time is 1.2h.
6. the method for the corn straw modification fibre modification fluorgypsum according to any one of claim 1-3, it is characterized in that, in S3, rhombspar, 0.25-0.35 part semi-hydrated gypsum, 0.6-1.0 part sodium oxalate after calcining in the alum in 4-5 part calcium hydroxide, 1.2-1.5 part blast-furnace slag, 1.5-2.2 part S2 after calcining, 1.2-1.8 part S2 is added in fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3.2-4h carries out a chemical modification, then 280-290 DEG C of calcining, calcination time is 0.8-1.3h.
7. the method for corn straw modification fibre modification fluorgypsum according to claim 6, it is characterized in that, in S3, the rhombspar in the alum in 4.3 parts of calcium hydroxides, 1.3 parts of blast-furnace slags, 1.7 parts of S2 after calcining, 1.6 parts of S2 after calcining, 0.3 part of semi-hydrated gypsum, 0.8 part of sodium oxalate is added in fluorgypsum by weight in 100 parts of S1 after thermal treatment, stir, still aging 3.5h carries out a chemical modification, and then 288 DEG C of calcinings, calcination time is 1.2h.
8. the method for the corn straw modification fibre modification fluorgypsum according to any one of claim 1-3, is characterized in that, in S4, in described aqueous sodium hydroxide solution, the substance withdrawl syndrome of sodium hydroxide is 4-6mol/L.
9. the method for the corn straw modification fibre modification fluorgypsum according to any one of claim 1-3, it is characterized in that, in S5, add 3-4 part polyvinyl alcohol in the fluorgypsum by weight in 100 parts of S4 after calcining, 5-7 part corn straw modification fiber, 1.8-2.3 part calcium acrylate carry out secondary chemical modification.
10. the method for corn straw modification fibre modification fluorgypsum according to claim 9, it is characterized in that, in S5, add 3.5 parts of polyvinyl alcohol in the fluorgypsum by weight in 100 parts of S4 after calcining, 6.2 parts of corn straw modification fibers, 2.0 parts of calcium acrylates carry out secondary chemical modification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410390518.0A CN104177048B (en) | 2014-08-10 | 2014-08-10 | A kind of method of corn straw modification fibre modification fluorgypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410390518.0A CN104177048B (en) | 2014-08-10 | 2014-08-10 | A kind of method of corn straw modification fibre modification fluorgypsum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104177048A CN104177048A (en) | 2014-12-03 |
| CN104177048B true CN104177048B (en) | 2016-03-02 |
Family
ID=51958433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410390518.0A Active CN104177048B (en) | 2014-08-10 | 2014-08-10 | A kind of method of corn straw modification fibre modification fluorgypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104177048B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885194A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Plastic bag prepared from modified sugarcane bagasse |
| CN105885193A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Plastic bag prepared from modified sorghum straw |
| CN108164285A (en) * | 2018-01-23 | 2018-06-15 | 合肥梵腾环保科技有限公司 | A kind of energy-saving insulating brick and preparation method thereof |
| CN108264321A (en) * | 2018-02-05 | 2018-07-10 | 合肥欧仕嘉机电设备有限公司 | A kind of water-fast moisture-proof plasterboard and preparation method thereof |
| CN108384283A (en) * | 2018-02-11 | 2018-08-10 | 贵州大学 | A kind of micronization modified method of simple ardealite |
| CN108314461A (en) * | 2018-02-27 | 2018-07-24 | 合肥尚涵装饰工程有限公司 | A kind of cracking resistance plasterboard and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569718A (en) * | 2004-05-11 | 2005-01-26 | 武汉理工大学 | Method for source modification treatment of fluoro-gypsum |
| CN101979353A (en) * | 2010-10-29 | 2011-02-23 | 福建省邵武市永飞化工有限公司 | Fluorgypsum modifying method and process for producing other chemical products by using fluorgypsum |
| CN102633453A (en) * | 2012-05-11 | 2012-08-15 | 武汉大学 | Neutral modifying agent for fluorgypsum and method for utilizing neutral modifying agent to modify fluorgypsum |
-
2014
- 2014-08-10 CN CN201410390518.0A patent/CN104177048B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569718A (en) * | 2004-05-11 | 2005-01-26 | 武汉理工大学 | Method for source modification treatment of fluoro-gypsum |
| CN101979353A (en) * | 2010-10-29 | 2011-02-23 | 福建省邵武市永飞化工有限公司 | Fluorgypsum modifying method and process for producing other chemical products by using fluorgypsum |
| CN102633453A (en) * | 2012-05-11 | 2012-08-15 | 武汉大学 | Neutral modifying agent for fluorgypsum and method for utilizing neutral modifying agent to modify fluorgypsum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104177048A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104177048B (en) | A kind of method of corn straw modification fibre modification fluorgypsum | |
| CN102851878B (en) | Alginate fiber absorbable medical auxiliary material and manufacture technology thereof | |
| CN105130495B (en) | A kind of high strength lightweight silica brick and preparation method thereof | |
| CN104176955B (en) | A kind of method of modifying of fluorgypsum | |
| CN104785088A (en) | Preparation method for formaldehyde scavenger | |
| CN104176957B (en) | A kind of method of redispersable latex powder modification fluorgypsum | |
| CN105152659B (en) | A kind of composite silicon brick and preparation method thereof | |
| CN103922793A (en) | Fluorine-removal activated water filter material | |
| CN112358214A (en) | Chemical activator for improving activity of coal gangue | |
| CN105622065A (en) | Shuiyuan stone containing far-infrared ceramic ball and preparation method thereof | |
| CN104177049B (en) | A kind of preparation method of high-performance modified fluorgypsum | |
| CN104310928A (en) | A method of modifying fluorine gypsum by a composite modifier | |
| CN107902910B (en) | Corrosion-resistant glass ceramics | |
| CN103122517A (en) | Inflaming-retardant and antimicrobial composite fiber fabric | |
| CN103638786A (en) | Preparation method of chemical lightweight drying agent | |
| CN105113049A (en) | Fluffy and breathable cashmere fiber capable of promoting regeneration of skin and preparation method of fluffy and breathable cashmere fiber | |
| CN111470505A (en) | Co-production method of camellia oleifera xylo-oligosaccharide, lignin and active carbon | |
| CN105152658B (en) | A kind of anticorrosive composite silicon brick and preparation method thereof | |
| CN104193286A (en) | High-strength modified fluorgypsum | |
| CN104176956A (en) | Method for modifying waste residue fluorgypsum by combining modifier with roasting | |
| CN104230319A (en) | Ceramic low-temperature binder and preparation technology thereof | |
| CN109402770A (en) | A kind of preparation method of the wig fiber of suitable long periods of wear | |
| CN106283650A (en) | A kind of preparation method of felt proofing anti-fuzz balls Pilus Caprae seu Ovis finishing agent | |
| CN108455851A (en) | A kind of spare glaze of ceramic system and preparation method thereof | |
| CN107604233A (en) | A kind of not broken ceramic preparation of high tenacity low-density |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 242310 Ningguo Xuancheng Anhui port town industrial concentration area Patentee after: Jinyang hi tech material Limited by Share Ltd Address before: 242310 provincial eco industrial park, port town, Xuancheng, Ningguo, Anhui Patentee before: Anhui Jinyang Fluorine Chemicals Co., Ltd. |
|
| CP03 | Change of name, title or address |