CN1702050A - Asbestos fibre surface treating process - Google Patents
Asbestos fibre surface treating process Download PDFInfo
- Publication number
- CN1702050A CN1702050A CN 200410042575 CN200410042575A CN1702050A CN 1702050 A CN1702050 A CN 1702050A CN 200410042575 CN200410042575 CN 200410042575 CN 200410042575 A CN200410042575 A CN 200410042575A CN 1702050 A CN1702050 A CN 1702050A
- Authority
- CN
- China
- Prior art keywords
- asbestos
- naoh
- koh
- magnesium silicate
- fibrous magnesium
- 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.)
- Pending
Links
- 239000010425 asbestos Substances 0.000 title claims abstract description 33
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 33
- 239000000835 fiber Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 12
- 229910052889 tremolite Inorganic materials 0.000 claims abstract description 9
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052637 diopside Inorganic materials 0.000 claims abstract description 6
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 6
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 229920000742 Cotton Polymers 0.000 claims description 40
- 241000219146 Gossypium Species 0.000 claims description 40
- 239000002131 composite material Substances 0.000 claims description 26
- 239000004575 stone Substances 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000000391 magnesium silicate Substances 0.000 claims description 17
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 15
- 235000019792 magnesium silicate Nutrition 0.000 claims description 15
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 5
- 239000004113 Sepiolite Substances 0.000 claims description 4
- 239000010456 wollastonite Substances 0.000 claims description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims description 4
- 239000003607 modifier Substances 0.000 abstract description 6
- 239000011707 mineral Substances 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 229910052918 calcium silicate Inorganic materials 0.000 abstract 2
- 235000012241 calcium silicate Nutrition 0.000 abstract 2
- 230000004071 biological effect Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
- JMGZBMRVDHKMKB-UHFFFAOYSA-L disodium;2-sulfobutanedioate Chemical compound [Na+].[Na+].OS(=O)(=O)C(C([O-])=O)CC([O-])=O JMGZBMRVDHKMKB-UHFFFAOYSA-L 0.000 description 5
- 230000002209 hydrophobic effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 230000032050 esterification Effects 0.000 description 3
- 238000005886 esterification reaction Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 238000001354 calcination Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 235000012243 magnesium silicates Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a asbestos fiber surface handling method, in which complex asbestos fiber slurry having been treated with agitating and adsorbing process is added with mineral surface modifier to react for 10-50min under stirring condition. Mineral surface modifier comprises: (1) NaOH and KOH; (2) inorganic mineral powder such as tremolite, diopside, meerschaum and grammite; (3) mixture of NaOH , KOH and inorganic mineral powder such as tremolite, diopside, meerschaum and grammite. The main advantages of this invention comprises multi-source mineral surface modifier, simple usage, low processing method, no damage to complex asbestos fiber and decreasing biological activity of asbestos fiber. The invention can reclaim asbestos refuse ore and short asbestos of six or seven grades and produce complex asbestos fiber product that achieves national standard and has water-wetted surface.
Description
The present invention relates to a kind of surface treatment method of fibrous magnesium silicate, belong to mineral processing and chemical industry and environment protection category.
Present asbestos ore-dressing technique produces a large amount of mine tailings when extracting or reclaiming the above finished product cotton of Pyatyi, comprise six, seven grades of cottons of what is called that fiber is very short, utility value is very low; These are six years old, contain still in seven grades of asbestos and the mine tailing that quantity does not wait and the fibrous magnesium silicate that can recycle of monomer dissociation, present a kind of methods of more effectively recycling these short fibrous magnesium silicates are that utilize fibrous magnesium silicate inflatable loosened or separated (loosing) property, cotton with the finished product more than the part Pyatyi as drawing cotton, by adding aliphatic alcohol polyethenoxy, diisooctyl sodium sulfosuccinate, dispersion agent or surface-modifying agents such as dibutyl sodium sulfonate, the fibrous magnesium silicate slurries of high dispersing are made in stirring, add above-mentioned asbestos tailings or six then, seven grades of asbestos carry out whip attachment, make wherein short fibrous magnesium silicate firm attachment in drawing on the cotton of being highly dispersed, drying dehydration again, it after the loose desanding the recyclable above composite stone cotton fibre of Pyatyi that obtains.About this recoverying and utilizing method, Chinese invention patent CN1227774A has carried out careful explanation.But after the composite stone cotton fibre drying that obtains in this way is hydrophobic, can not use in asbestos-cement products.Therefore, its Application Areas and market are very limited, and make that this method is difficult to apply in asbestos tailings and six, seven grades short cotton processing with in recycling.Can solve its hydrophobic problem though this composite stone cotton fibre is carried out calcining method, conjugated fibre is caused the grade of compound asbestos product to descend by partial destruction when organic modifiers is by pyrolytic decomposition; Composite stone cotton fibre color after the calcining becomes blackyellow simultaneously, influences its color and luster.
The present invention is directed to above-mentioned with asbestos tailings and six, the seven grades short deficiencies that cotton processing composite stone cotton fibre technology exists, a kind of later stage surface treatment method of composite stone cotton fibre has been proposed, not only can make its by hydrophobic become hydrophilic, and for established composite stone cotton fibre not damaged; Can also reduce simultaneously the physiologically active of fibrous magnesium silicate to a certain extent, improve the security of its use.The inventive method can reclaim the composite stone cotton fibre product that asbestos tailings and six, seven grades short asbestos production reach the above standard of national Pyatyi asbestos.This composite stone cotton fibre product surface is hydrophilic, can be widely used in asbestos-cement products and other building material mades.The a large amount of asbestos tailings in the western cotton growing area of China constitutes a serious threat to ecotope at present, demands urgently handling.Reduce the physiologically active of fibrous magnesium silicate on the other hand, improve the security of using and become asbestos processing and the key subjects of utilizing the field.Therefore, the present invention is all significant for the safety in utilization of asbestos tailings and six, seven grades short cotton comprehensive utilizations, protection environment and fibrous magnesium silicates.
Main contents of the present invention:
To the effect that of the present invention, draw cotton, asbestos tailings and six, seven grades short cotton through dispersion agent disperse and whip attachment after composite stone cotton fibre slurries in add inorganic surfaces properties-correcting agent and carry out stirring reaction, make composite stone cotton fibre surface become wetting ability by hydrophobicity.This inorganic surfaces properties-correcting agent comprises three kinds.The 1st kind is NaOH and KOH, and consumption is 0.3%～3% of a composite stone cotton quality; The 2nd kind is the inorganic mineral powder, and as the tremolite, diopside, sepiolite, wollastonite, consumption is 2%～20% of a composite stone cotton quality; The 3rd kind is the inorganic mineral powder tremolite, diopside, sepiolite, wollastonite and NaOH and the compound composition of KOH, and compound prescription is an inorganic mineral powder: alkali=1: 0.05～1.0, consumption are 1%～10% of composite stone cotton quality.The 2nd and the 3rd kind inorganic modified dose whiteness that can also improve the composite stone cotton fibre to a certain extent.
The using method of inorganic surfaces properties-correcting agent of the present invention:
Draw cotton, asbestos tailings and six, seven grades short cotton through dispersion agent disperse and whip attachment after add inorganic surfaces properties-correcting agent of the present invention in the composite stone cotton fibre slurries that form, stirring reaction 10～50min then, reaction can be carried out at normal temperatures, also can heat and carry out, temperature is high more, and the time of stirring reaction is short more.After reaction finishes, carry out filtration drying again, loosen and desanding.
The action principle of inorganic surfaces properties-correcting agent of the present invention:
(1) esterification.Highly basic plays esterification with the organic modifiers or the dispersion agent that are adsorbed in the fibrous magnesium silicate surface, makes it by hydrophobic to a certain degree hydrophilic of becoming.The action principle of the 1st kind of properties-correcting agent NaOH and KOH promptly belongs to this.
(2) surface adsorption covers.Hydrophilic inorganic mineral powder is adsorbed in composite stone cotton fibre surface, has hidden the hydrophobic position on surface, makes it present wetting ability, and therefore, consumption is big more, and the wetting ability on composite stone cotton fibre surface is strong more.The action principle of the 2nd kind of properties-correcting agent inorganic mineral powder promptly belongs to this.
(3) esterification and surface adsorption cover combined action.The action principle of the 3rd kind of inorganic mineral powder and NaOH and KOH composite modifier promptly belongs to this.
Fibrous magnesium silicate surface treatment method of the present invention has that surface-modifying agent source is wide, using method is simple, processing cost is low, water can be recycled, do not damage the composite stone cotton fibre and can reduce the characteristics such as physiologically active of fibrous magnesium silicate to a certain extent, and bigger application value is arranged.
Embodiment:
1. Pyatyi finished product asbestos 80g, add water 4L, diisooctyl sodium sulfosuccinate 16mL, in stirrer, add asbestos tailings powder 860g behind the dispersed with stirring 20min, add 15gNaOH behind the whip attachment 5min, and stirring reaction 30min at normal temperatures, filter then, dry, loosen, desanding, promptly obtain the composite stone cotton fibre of surface hydrophilic.
2. Pyatyi finished product asbestos 60g, add water 4L, diisooctyl sodium sulfosuccinate 12mL, in stirrer, add asbestos tailings powder 880g behind the dispersed with stirring 20min, add 60g 325 order tremolite powders behind the whip attachment 3min, and stirring reaction 20min at normal temperatures, filter then, dry, loosen, desanding, promptly obtain the composite stone cotton fibre of surface hydrophilic.
3. Pyatyi finished product asbestos 60g, add water 4L, diisooctyl sodium sulfosuccinate 12mL, in stirrer, add asbestos tailings powder 890g behind the dispersed with stirring 20min, add the inorganic surfaces properties-correcting agent of 50g behind the whip attachment 3min by 325 order tremolite powders and the compound preparation of NaOH, and stirring reaction 30min at normal temperatures, filter then, dry, loosen, desanding, promptly obtain the composite stone cotton fibre of surface hydrophilic.
4. Pyatyi finished product asbestos 6kg, add water 360L, diisooctyl sodium sulfosuccinate 1.5kg, in reactor, add asbestos tailings powder 89kg behind the dispersed with stirring 20min, add the inorganic surfaces properties-correcting agent of 5kg behind the whip attachment 3min by 325 order tremolite powders and the compound preparation of NaOH, and stirring reaction 30min at normal temperatures, filter then, dry, loosen, desanding, promptly obtain the composite stone cotton fibre of surface hydrophilic.
Claims (2)
1. the surface treatment method of a fibrous magnesium silicate is characterized in that drawing a certain amount of inorganic surfaces properties-correcting agent of adding and stirring reaction 10～50min in cotton, asbestos tailings and the composite stone cotton fibre slurries of six, seven grades short cottons after dispersion agent dispersion and whip attachment.Reaction can be carried out at normal temperatures, also can heat and carry out.After reaction finishes, filter again, dry, loosen and desanding, the composite stone cotton fibre product that obtains reaches above standard of national Pyatyi asbestos and surface hydrophilic.
2. the inorganic surfaces properties-correcting agent described in the claim 1 comprises following three kinds:
(1) NaOH and KOH, consumption are 0.3%～3% of fibrous magnesium silicate quality;
(2) the inorganic mineral powder tremolite, diopside, sepiolite, wollastonite, consumption are 2%～20% of fibrous magnesium silicate quality;
(3) mixture of the inorganic mineral powder tremolite, diopside, sepiolite, wollastonite and NaOH and KOH, compound prescription is: inorganic mineral powder: NaOH or KOH=1: 0.05～1.0, consumption is 1%～10% of a fibrous magnesium silicate quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410042575 CN1702050A (en) | 2004-05-24 | 2004-05-24 | Asbestos fibre surface treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410042575 CN1702050A (en) | 2004-05-24 | 2004-05-24 | Asbestos fibre surface treating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1702050A true CN1702050A (en) | 2005-11-30 |
Family
ID=35632036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410042575 Pending CN1702050A (en) | 2004-05-24 | 2004-05-24 | Asbestos fibre surface treating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1702050A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337703A (en) * | 2011-10-08 | 2012-02-01 | 长沙理工大学 | Method for preparing modified calcium sulfate crystal whisker papermaking filler |
| CN106700353A (en) * | 2016-12-06 | 2017-05-24 | 唐贵正 | Good-tenacity anti-aging fluoroplastic |
| CN106751251A (en) * | 2016-12-06 | 2017-05-31 | 唐贵正 | A kind of antibacterial anti-corrosive fluoroplastic |
| CN113718526A (en) * | 2021-08-31 | 2021-11-30 | 绍兴君瑞新材料有限公司 | Composite polymer heat-insulation waterproof asbestos cloth processing technology |
-
2004
- 2004-05-24 CN CN 200410042575 patent/CN1702050A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337703A (en) * | 2011-10-08 | 2012-02-01 | 长沙理工大学 | Method for preparing modified calcium sulfate crystal whisker papermaking filler |
| CN102337703B (en) * | 2011-10-08 | 2013-07-31 | 长沙理工大学 | Method for preparing modified calcium sulfate crystal whisker papermaking filler |
| CN106700353A (en) * | 2016-12-06 | 2017-05-24 | 唐贵正 | Good-tenacity anti-aging fluoroplastic |
| CN106751251A (en) * | 2016-12-06 | 2017-05-31 | 唐贵正 | A kind of antibacterial anti-corrosive fluoroplastic |
| CN113718526A (en) * | 2021-08-31 | 2021-11-30 | 绍兴君瑞新材料有限公司 | Composite polymer heat-insulation waterproof asbestos cloth processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |