CN103319098A - Method for producing fiberglass by using pulping and papermaking white mud - Google Patents
Method for producing fiberglass by using pulping and papermaking white mud Download PDFInfo
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- CN103319098A CN103319098A CN2013102361654A CN201310236165A CN103319098A CN 103319098 A CN103319098 A CN 103319098A CN 2013102361654 A CN2013102361654 A CN 2013102361654A CN 201310236165 A CN201310236165 A CN 201310236165A CN 103319098 A CN103319098 A CN 103319098A
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- glass fibre
- white clay
- pulping
- white mud
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
Abstract
The invention discloses a method for producing fiberglass by using pulping and papermaking white mud. The method comprises the following steps that in the step of treating the pulping and papermaking white mud, water is added into the white mud to be stirred so as to be uniformly dispersed and diluted, after coarse and big particles are removed, filtering and condensation are carried out to obtain dewatering white mud; the dewatering white mud is dried and calcined at the temperature of 900 and 950 DEG C to obtain a white mud calcining matter; in the step of mixing the following components in parts by weight, the components including 50-60 parts of pyrophyllite, 8-10 parts of quartzitic sandstone, 5-8 parts of dolomite, 8-10 parts of white mud calcining matter, 15-25 parts of kaoline, 7-10 parts of borocalcite and 4-6 parts of albite are mixed; smelting at high temperature to prepare glass liquid and wiredrawing and molding to prepare the fiberglass. According to the method, the problems of environment pollution and land occupation caused by white mud land treatment are solved; and meanwhile, the white mud is subjected to resource utilization, so that exploitation and consumption of natural limestone resources in the fiberglass industry are reduced, the manufacturing cost of the fiberglass can be reduced, and the method has obvious environment benefit and economic benefit.
Description
Technical field
The present invention relates to a kind ofly pulping and paper-making alkali is reclaimed the causticization white clay handle and recycling, as the method for glass fibre production with raw material, belong to the glass fibre production technical field, be specifically related to a kind of method of utilizing the pulping and paper-making white clay to produce glass fibre.
Background technology
White clay is that the waste water (also being black liquor) of chemical pulping is handled a kind of solid waste that the back produces at chemical recovery system.In order to prevent the pollution of the environment, generally all adopt ripe at present alkali recovery technology to handle at pulp mill's black liquor, the organism in the black liquor is burnt utilize the caustic soda (NaOH) of heat energy, also recyclable slurrying consumption.Chemical recovery system has been handled the pollutent of pulp mill 90%, but also can produce the white clay waste of a large amount of (about 0.8 ton of white clay/1 ton paper pulp).The main component of white clay is calcium carbonate (CaCO
3), its state is paste, water ratio about 40%.The white clay amount is big, has just begun the utilization of white clay as far back as 20 middle of century pulp mills, to prevent the secondary pollution of its generation.Traditional method is burning of lime sludge to be prepared calcium oxide (a kind of raw material of chemical recovery system) carry out reuse.But be silicon (SiO in the white clay of pulp mill of raw material with non-wood-fiber (as bamboo, straw, wheat straw and reed etc.)
2) content height (can reach 10 times of wood pulp factory white clay silicone content even higher), the difficulty of burning of lime sludge reuse and cost are strengthened; And increased the silicone content that reclaims in the alkali, if reclaim usefulness again, recycled, certainly will aggravate the silicon interference that alkali reclaims, produce vicious cycle, so that alkali reclaims and can't normally move, so the white clay of most non-wood pulp enterprise is not recycled by calcining method.For many years, people have carried out the research work in a plurality of fields at white clay main component and character thereof to the comprehensive utilization technique of non-wood pulp white clay.For example, white clay is used for the oil field, paves the way, or be used for the additive of coating, plastics etc., but consumption is limited, the value of development and use is little, and it is bigger to be limited by the other industry degree.White clay made with extra care be processed into calcium carbonate, fill out as adding in the paper-making process, but the degree of cleaning of product, crystal shape and size still can not satisfy the requirement of papermaking filler.In view of this, though the research of relevant white clay is many, owing to reason such as technical problem, cost problem or consumption be very few, white clay is not effectively utilized.At present, the mode that most white claies can only adopt air storage or land to bury is disposed, and has both caused second environmental pollution, has wasted a large amount of calcium carbonate resources again, enterprise must pay huge effluent charge, and white clay is administered just becomes the difficult problem that many enterprises press for solution.White clay as the raw material of producing glass fibre, is solved the white clay puzzlement problem of enterprises in pulp and paper industry, alleviated environmental pollution; Can also reduce glass fiber industry to the consumption of natural calcium resource, have tangible environmental benefit and economic benefit.
Summary of the invention
In order to solve environmental pollution and the land seizure problem that the white clay waste causes in the prior art, the invention provides a kind of method of utilizing the pulping and paper-making white clay to produce glass fibre.
In order to solve above-mentioned technical problem, the present invention takes following technical scheme:
A kind of method of utilizing the pulping and paper-making white clay to produce glass fibre may further comprise the steps:
Step 1: the processing of pulping and paper-making white clay: white clay is added water stir, it is evenly disperseed and dilution, behind the removal big particle, filter, concentrate to remove the moisture in the white clay, get the dehydration white clay; The white clay that will dewater dry to moisture content be back below 2% in 900～950 ℃ of down calcinings, collect calcinate grind the burning of lime sludge thing, its main component is calcium oxide;
Step 2: utilize the burning of lime sludge thing to produce glass fibre: the starting material of producing glass fibre comprise following components by part by weight: 50 parts～60 parts of agalmatolites, 8 parts～10 parts of white afrodites, 5 parts～8 parts of rhombspars, 8 parts～10 parts of burning of lime sludge things, 15 parts～25 parts of kaolin, 7 parts～10 parts of borocalcites, 4 parts～6 parts of albites; The starting material of producing glass fibre are mixed, after high temperature melting becomes glass metal, make glass fibre through wire-drawing shape.
Preferably: described pulping and paper-making white clay is to adopt the black liquor of sulphate process or soda pulping through the white clay of the causticization operation generation of chemical recovery system.
Less than 0.5%, the massfraction of dissolving sodium is less than 0.5% greater than 80%, Fe massfraction for the CaO massfraction in the described burning of lime sludge thing, and the moisture massfraction is less than 2%.
Described starting material with above-mentioned production glass fibre mix, and after high temperature melting becomes glass metal, make glass fibre through wire-drawing shape, and specifically may further comprise the steps: (1) gets the material weighing with various raw materials by proportioning; Wherein, the particle diameter of albite, rhombspar, burning of lime sludge thing≤100 orders, the particle diameter of borocalcite≤200 orders, the particle diameter of kaolin, agalmatolite, white afrodite≤325 orders; (2) various raw material stirring are even, uniformity coefficient is greater than 92%; (3) material that mixes is sent into found in the cell furnace and obtained high temp glass liquid; Glass melting temperature control is in 1550 ℃～1600 ℃ scopes; Melting time is 72h～100h; (4) the high temp glass liquid that obtains is entered forehearth after clarification, homogenizing, and in the platinum rhodium bushing in 800～4000 holes, flow out, be drawn into the precursor of diameter 9～24 μ m, the temperature control that glass metal flows out from the platinum rhodium bushing is at 1280 ℃～1320 ℃; (5) apply the layer of glass treating compound in the filament surfaces that step 4 is made; (6) oven dry, the precursor that step 5 is obtained are adopted drying with steam or microwave oven heating, drying mode to dry and are made alkali free glass fibre; Bake out temperature control is at 90 ℃～150 ℃, and drying time is 12h～16h; (7) back operation namely gets glass fibre with the alkali free glass fibre after step 6 oven dry through doff.
The present invention compared with prior art has following beneficial effect:
The present invention calcines the burning of lime sludge thing of gained as the starting material of preparation glass fibre after adopting the pulping and paper-making lime mud treatment, not only solve white clay land and handled environmental pollution and the land seizure problem that causes, simultaneously also with the white clay recycling, reduced exploitation and the consumption of glass fibre to the natural limestone resource, can reduce the cost that glass fibre is made, have tangible environmental benefit and economic benefit.
Description of drawings
Fig. 1 is the schema of the pulping and paper-making lime mud treatment of one embodiment of the invention;
Fig. 2 produces the schema of glass fibre for the burning of lime sludge thing that utilizes of one embodiment of the invention.
Embodiment
The invention will be further elaborated and explanation below in conjunction with embodiments of the invention and accompanying drawing, but embodiments of the present invention are not limited thereto.
Fig. 1 shows the schema of the pulping and paper-making lime mud treatment of one embodiment of the invention, lime mud treatment may further comprise the steps: stir after placing the white clay dilution trap to add water white clay, according to a preferred embodiment of the invention, described white clay is to adopt the black liquor of sulphate process or soda pulping through the white clay of the causticization operation generation of chemical recovery system, it is evenly disperseed in stirring and dilution obtains the white clay slurry, with the white clay pump white clay slurry is sent into to screen in the white clay sieve and removes big particle; Filter, concentrate with lime mud filter then, obtain the white clay that dewaters with the moisture that removes in the white clay; The dehydration white clay is further oven dry in the white clay drying plant, and moisture is down to the 2%(massfraction) below; To dry white clay again and calcine under 900～950 ℃ high temperature, and it be decomposed generate the burning of lime sludge thing, the main component of burning of lime sludge thing is calcium oxide (CaO); At last the burning of lime sludge thing is made and to be passed through the little meal of 100 purposes.Less than 0.5%, the massfraction of dissolving sodium is less than 0.5% greater than the massfraction of 80%, Fe for the massfraction of CaO in the burning of lime sludge thing, and the massfraction of moisture is less than 2%.
Fig. 2 shows the burning of lime sludge thing that utilizes of one embodiment of the invention and produces the schema of glass fibre, specifically may further comprise the steps: (1) takes by weighing raw material according to following proportioning: 50 parts of agalmatolites, 10 parts of white afrodites, 6 parts of rhombspars, 8 parts of burning of lime sludge things, kaolin 15,7 parts of borocalcites, 4 parts of albites.The particle diameter of albite, rhombspar, burning of lime sludge thing≤100 orders wherein, the particle diameter of borocalcite≤200 orders, the particle diameter of kaolin, agalmatolite, white afrodite≤325 orders.(2) various raw materials are sent into together strength and mixed the stirring transmitter, stir, uniformity coefficient is greater than 92%; (3) material that mixes is sent into found in the cell furnace and obtained high temp glass liquid; Glass melting temperature control is in 1550 ℃ of scopes; Melting time is 100h; (4) the high temp glass liquid that obtains is entered forehearth after clarification, homogenizing, and in the platinum rhodium bushing in 800～4000 holes, flow out, be drawn into diameter at the precursor of 9～24 μ m, the temperature control that glass metal flows out from the platinum rhodium bushing is at 1280 ℃～1320 ℃; (5) apply the layer of glass treating compound in the filament surfaces that step 4 is made; (6) oven dry, the precursor that step 5 is obtained are adopted drying with steam or microwave oven heating, drying mode to dry and are made alkali free glass fibre; Bake out temperature control is at 90 ℃～150 ℃, and drying time is 12h～16h; (7) back operation through doff, namely gets glass fibre with the alkali free glass fibre after step 6 oven dry.
Embodiment 2:
Burning of lime sludge thing after handling among the present embodiment employing embodiment 1 is as the feedstock production glass fibre, concrete operation steps is as follows: (1) takes by weighing raw material according to following proportioning: 50 parts of agalmatolites, 10 parts of white afrodites, 6 parts of rhombspars, 10 parts of burning of lime sludge things, kaolin 25,7 parts of borocalcites, 6 parts of albites.The particle diameter of albite, rhombspar, burning of lime sludge thing≤100 orders wherein, the particle diameter of borocalcite≤200 orders, the particle diameter of kaolin, agalmatolite, white afrodite≤325 orders.(2) various raw materials are sent into together strength and mixed the stirring transmitter, stir, uniformity coefficient is greater than 92%; (3) material that mixes is sent into found in the cell furnace and obtained high temp glass liquid; Glass melting temperature control is in 1600 ℃ of scopes; Melting time is 72h; (4) the high temp glass liquid that obtains is entered forehearth after clarification, homogenizing, and in the platinum rhodium bushing in 800～4000 holes, flow out, be drawn into diameter at the precursor of 9～24 μ m, the temperature control that glass metal flows out from the platinum rhodium bushing is at 1280 ℃～1320 ℃; (5) the material surface-coated layer of glass treating compound that step 4 is being made; (6) oven dry, the precursor that step 5 is obtained are adopted drying with steam or microwave oven heating, drying mode to dry and are made alkali free glass fibre; Bake out temperature control is at 90 ℃～150 ℃, and drying time is 12h～16h; (7) back operation through doff, namely gets glass fibre with the alkali free glass fibre after step 6 oven dry.
Although invention has been described with reference to explanatory embodiment of the present invention here, above-described embodiment only is preferred implementation of the present invention, embodiments of the present invention are not restricted to the described embodiments, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.
Claims (4)
1. method of utilizing the pulping and paper-making white clay to produce glass fibre, it is characterized in that may further comprise the steps: step 1: the processing of pulping and paper-making white clay: white clay is added water stir, it is evenly disperseed and dilution, remove big particle after, filter, concentrate the dehydration white clay; The white clay that will dewater oven dry back is in 900～950 ℃ of calcinings down, collect calcinate grind the burning of lime sludge thing;
Step 2: utilize the burning of lime sludge thing to produce glass fibre: the starting material of producing glass fibre comprise following components by part by weight: 50 parts～60 parts of agalmatolites, 8 parts～10 parts of white afrodites, 5 parts～8 parts of rhombspars, 8 parts～10 parts of burning of lime sludge things, 15 parts～25 parts of kaolin, 7 parts～10 parts of borocalcites, 4 parts～6 parts of albites; The starting material of above-mentioned production glass fibre are mixed, after high temperature melting becomes glass metal, make glass fibre through wire-drawing shape.
2. a kind of method of utilizing the pulping and paper-making white clay to produce glass fibre according to claim 1 is characterized in that described pulping and paper-making white clay is to adopt the black liquor of sulphate process or soda pulping through the white clay of the causticization operation generation of chemical recovery system.
3. a kind of method of utilizing the pulping and paper-making white clay to produce glass fibre according to claim 1, it is characterized in that the massfraction of CaO in the described burning of lime sludge thing is greater than 80%, the massfraction of Fe is less than 0.5%, and the massfraction of dissolving sodium is less than 0.5%, and the massfraction of moisture is less than 2%.
4. a kind of method of utilizing the pulping and paper-making white clay to produce glass fibre according to claim 1, it is characterized in that described starting material with above-mentioned production glass fibre mix, after high temperature melting becomes glass metal, make glass fibre through wire-drawing shape, specifically may further comprise the steps: (1) gets the material weighing with various raw materials by proportioning; Wherein, the particle diameter of albite, rhombspar, burning of lime sludge thing≤100 orders, the particle diameter of borocalcite≤200 orders, the particle diameter of kaolin, agalmatolite, white afrodite≤325 orders; (2) various raw material stirring are even; (3) material that mixes is sent into found in the cell furnace and obtained high temp glass liquid; Glass melting temperature control is in 1550 ℃～1600 ℃ scopes; Melting time is 72h～100h; (4) the high temp glass liquid that obtains is entered forehearth after clarification, homogenizing, and in the platinum rhodium bushing in 800～4000 holes, flow out, be drawn into the precursor of diameter 9～24 μ m, the temperature control that glass metal flows out from the platinum rhodium bushing is at 1280 ℃～1320 ℃; (5) filament surfaces that makes in step 4 applies the layer of glass treating compound; (6) oven dry, the precursor that step 5 is obtained are adopted drying with steam or microwave oven heating, drying mode to dry and are made alkali free glass fibre; Bake out temperature control is at 90 ℃～150 ℃, and drying time is 12h～16h; (7) back operation through doff, namely gets glass fibre with the alkali free glass fibre after step 6 oven dry.
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| CN201310236165.4A CN103319098B (en) | 2013-06-14 | 2013-06-14 | A kind of method utilizing pulping and paper-making white clay to produce glass fibre |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739197A (en) * | 2014-01-06 | 2014-04-23 | 江苏中亚新材料股份有限公司 | Production method of glass fiber SMC yarn |
| CN104402214A (en) * | 2014-10-31 | 2015-03-11 | 内江华原电子材料有限公司 | Method for producing glass fiber by using pulping and paper-making white mud |
| CN106277804A (en) * | 2016-08-04 | 2017-01-04 | 中国计量大学 | A kind of environmental-friendly glass fiber and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB729378A (en) * | 1952-05-21 | 1955-05-04 | American Hard Rubber Co | Improvements in or relating to an acid resistant moulded article |
| US3366535A (en) * | 1966-07-11 | 1968-01-30 | William T Neiman | Process for regenerating waste liquor for reuse in kraft pulping operation |
| CN1034188A (en) * | 1988-12-21 | 1989-07-26 | 江苏省日用化工研究所 | Black liquid alkali reclaims the method for utilizing of waste residue white clay |
| CN2053627U (en) * | 1988-03-17 | 1990-02-28 | 秦皇岛玻璃纤维厂 | Skeleton structure type reinforced draining board |
| CN1043753A (en) * | 1989-08-15 | 1990-07-11 | 中国有色金属工业总公司昆明贵金属研究所 | Platinum-based heat-resistant alloy used for glassfibre drain board |
| CN102531402A (en) * | 2011-12-20 | 2012-07-04 | 内江华原电子材料有限公司 | Method for producing alkali-free glass fiber by albite serving as fluxible clarifying agent |
| CN102586947A (en) * | 2012-03-09 | 2012-07-18 | 鹤壁维洁节能材料研究院 | Method for producing inorganic fiber for papermaking by means of alkali recovery lime sludge of paper mill |
| CN103058513A (en) * | 2013-01-05 | 2013-04-24 | 内江华原电子材料有限公司 | Compound clarifying agent, preparation method thereof and method for preparing E glass fiber by adopting compound clarifying agent |
-
2013
- 2013-06-14 CN CN201310236165.4A patent/CN103319098B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB729378A (en) * | 1952-05-21 | 1955-05-04 | American Hard Rubber Co | Improvements in or relating to an acid resistant moulded article |
| US3366535A (en) * | 1966-07-11 | 1968-01-30 | William T Neiman | Process for regenerating waste liquor for reuse in kraft pulping operation |
| CN2053627U (en) * | 1988-03-17 | 1990-02-28 | 秦皇岛玻璃纤维厂 | Skeleton structure type reinforced draining board |
| CN1034188A (en) * | 1988-12-21 | 1989-07-26 | 江苏省日用化工研究所 | Black liquid alkali reclaims the method for utilizing of waste residue white clay |
| CN1043753A (en) * | 1989-08-15 | 1990-07-11 | 中国有色金属工业总公司昆明贵金属研究所 | Platinum-based heat-resistant alloy used for glassfibre drain board |
| CN102531402A (en) * | 2011-12-20 | 2012-07-04 | 内江华原电子材料有限公司 | Method for producing alkali-free glass fiber by albite serving as fluxible clarifying agent |
| CN102586947A (en) * | 2012-03-09 | 2012-07-18 | 鹤壁维洁节能材料研究院 | Method for producing inorganic fiber for papermaking by means of alkali recovery lime sludge of paper mill |
| CN103058513A (en) * | 2013-01-05 | 2013-04-24 | 内江华原电子材料有限公司 | Compound clarifying agent, preparation method thereof and method for preparing E glass fiber by adopting compound clarifying agent |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739197A (en) * | 2014-01-06 | 2014-04-23 | 江苏中亚新材料股份有限公司 | Production method of glass fiber SMC yarn |
| CN103739197B (en) * | 2014-01-06 | 2015-10-14 | 江苏中亚新材料股份有限公司 | A kind of production method of glass fibre SMC yarn |
| CN104402214A (en) * | 2014-10-31 | 2015-03-11 | 内江华原电子材料有限公司 | Method for producing glass fiber by using pulping and paper-making white mud |
| CN106277804A (en) * | 2016-08-04 | 2017-01-04 | 中国计量大学 | A kind of environmental-friendly glass fiber and preparation method thereof |
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