Melt composition for the production of man-made vitreous fibres
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-013/00
C03C-013/06
C03C-003/087
C03B-005/02
C03B-037/04
출원번호
US-0122911
(2012-10-12)
등록번호
US-9012342
(2015-04-21)
우선권정보
EP-11193988 (2011-12-16)
국제출원번호
PCT/EP2012/070344
(2012-10-12)
국제공개번호
WO2013/087251
(2013-06-20)
발명자
/ 주소
Solvang, Mette
Grove-Rasmussen, Svend
Rosendahl Foldschack, Mathilde
출원인 / 주소
Rockwool International A/S
대리인 / 주소
Tarolli, Sundheim, Covell & Tummino LLP
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
The invention relates to a melt composition for the production of man-made vitreous fibers and man-made vitreous fibers comprising the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %, preferably 5-8 weight %CaO8-18 weight %MgO5
The invention relates to a melt composition for the production of man-made vitreous fibers and man-made vitreous fibers comprising the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %, preferably 5-8 weight %CaO8-18 weight %MgO5-7 weight %Na2Oup to 10 weight %, preferably 2-7 weight %K2Oup to 10 weight %, preferably 3-7 weight %P2O5up to 2%MnOup to 2%R2Oup to 10 weight % wherein the proportion of Fe(2+) is greater than 80% based on total Fe and is preferably at least 90%, more preferably at least 95% and most preferably at least 97% based on total Fe.
대표청구항▼
1. A melt composition for the production of man-made vitreous fibers comprising the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %,CaO8-18 weight %MgO5-7 weight %Na2Oup to 10 weight %,K2Oup to 10 weight %,P2O5up to 2%MnOup to
1. A melt composition for the production of man-made vitreous fibers comprising the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %,CaO8-18 weight %MgO5-7 weight %Na2Oup to 10 weight %,K2Oup to 10 weight %,P2O5up to 2%MnOup to 2%R2Oup to 10 weight %wherein the proportion of Fe(2+) is greater than 80% based on total Fe;wherein the reading for Fe(0) content in the melt, measured using a magnetic analyser, is less than 900 ppm. 2. A melt composition according to claim 1, wherein the reading for Fe(0) content in the melt, measured using a magnetic analyser, is less than 500 ppm. 3. A method of forming man-made vitreous fibers comprising fiberising a melt composition according to claim 1 by a spinning cup method to form fibers and collecting the formed fibers. 4. A method of forming a melt composition as defined in claim 1, comprising heating and melting mineral material in a furnace to produce a mineral melt and, if necessary, adjusting the oxidation state of the melt such that the proportion of Fe(2+) based on total Fe is greater than 80%. 5. A melt composition according to claim 1, wherein the proportion of Fe(2+) is greater than at least 90% based on total Fe. 6. A melt composition according to claim 1, wherein the proportion of Fe(2+) is greater than at least 95% based on total Fe. 7. A melt composition according to claim 1, wherein the proportion of Fe(2+) is greater than at least 97% based on total Fe. 8. Man-made vitreous fibers having a composition comprising the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %,CaO8-18 weight %MgO5-7 weight %Na2Oup to 10 weight %,K2Oup to 10 weight %,P2O5up to 2%MnOup to 2%R2Oup to 10 weight %wherein the proportion of Fe(2+) based on total Fe is greater than 80%;wherein the reading for Fe(0) content in the man-made vitreous fibers, measured using a magnetic analyser, is less than 900 ppm. 9. Man-made vitreous fibers according to claim 8, wherein the dielectric loss factor ∈″ of the fibers is less than 0.02. 10. Man-made vitreous fibers according to claim 8, wherein the reading for Fe(0) content in the man-made vitreous fibers, measured using a magnetic analyser, is less than 500 ppm. 11. Man-made vitreous fibers according to claim 8, wherein the ratio of K2O to Na2O calculated by weight of oxides is from 1:2 to 4:1. 12. Man-made vitreous fibers according to claim 8, wherein the fibers are formed by a spinning cup method. 13. A man-made vitreous fibre product comprising man-made vitreous fibers according to claim 8 and binder. 14. A man-made vitreous fibre product according to claim 13, wherein the product comprises less than 4% shot. 15. A melt composition according to claim 8, wherein the proportion of Fe(2+) is greater than at least 90% based on total Fe. 16. A melt composition according to claim 8, wherein the proportion of Fe(2+) is greater than at least 95% based on total Fe. 17. A melt composition according to claim 8, wherein the proportion of Fe(2+) is greater than at least 97% based on total Fe. 18. A method of forming a melt composition, the method comprising the steps of: heating and melting mineral material in a furnace to produce a mineral melt; andadjusting, if necessary, the oxidation state of the melt such that the proportion of Fe(2+) based on total Fe is greater than 80%;wherein the melt composition comprises the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %CaO8-18 weight %MgO5-7 weight %Na2Oup to 10 weight %K2Oup to 10 weight %P2O5up to 2%MnOup to 2%R2Oup to 10 weight %wherein the reading for Fe(0) content in the man-made vitreous fibers, measured using a magnetic analyser, is less than 900 ppm;wherein the oxidation state of the melt is adjusted by subjecting the melt to an electrical potential. 19. A method according to claim 18, wherein the oxidation state of the melt is adjusted by subjecting the melt to an electrical potential using graphite electrodes. 20. A method of forming a melt composition, the method comprising the steps of: heating and melting mineral material in a furnace to produce a mineral melt; andadjusting, if necessary, the oxidation state of the melt such that the proportion of Fe(2+) based on total Fe is greater than 80%;wherein the melt composition comprises the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %CaO8-18 weight %MgO5-7 weight %Na2Oup to 10 weight %K2Oup to 10 weight %P2O5up to 2%MnOup to 2%R2Oup to 10 weight %wherein the reading for Fe(0) content in the man-made vitreous fibers, measured using a magnetic analyser, is less than 900 ppm;wherein the furnace is a submerged arc furnace. 21. A method according to claim 20, wherein the furnace is a submerged arc furnace using graphite electrodes. 22. A method of forming a melt composition, the method comprising the steps of: heating and melting mineral material in a furnace to produce a mineral melt; andadjusting, if necessary, the oxidation state of the melt such that the proportion of Fe(2+) based on total Fe is greater than 80%;wherein the melt composition comprises the following oxides, by weight of composition: SiO239-43 weight %Al2O320-23 weight %TiO2up to 1.5 weight %Fe2O35-9 weight %CaO8-18 weight %MgO5-7 weight %Na2Oup to 10 weight %K2Oup to 10 weight %P2O5up to 2%MnOup to 2%R2Oup to 10 weight %wherein the reading for Fe(0) content in the man-made vitreous fibers, measured using a magnetic analyser, is less than 900 ppm;wherein the step of heating and melting of mineral material in a furnace comprises:suspending powdered carbonaceous fuel in preheated combustion air and combusting the suspended carbonaceous fuel to form a flame,suspending particulate mineral material, which has been preheated in the flame, and melting the mineral material in a circulating combustion chamber and thereby forming the melt composition. 23. A method according to claim 22, wherein the particulate material has been preheated to at least 500° C. 24. A method according to claim 22, wherein the particulate material has been preheated to at least 700° C.
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