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A float glass and glass technology, applied in the field of silicate glass and chemical tempered glass, can solve the problem of high melting temperature of float glass, improve the density, improve the shear modulus, and prevent glass crystallization. Effect
Active Publication Date: 2008-09-24
CHINA BUILDING MATERIALS ACAD
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[0005] In order to solve the problem of high melting temperature of float glass in the prior art, the purpose of the present invention is to provi
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Embodiment 1
[0029] The glass batch materials of float glass include quartz sand, aluminum oxide, potassium carbonate, sodium carbonate, calcium carbonate, magnesium oxide, lithium carbonate and rare earth tailings. In addition, Glauber's salt and C powder are added (the amount of Glauber's salt is 1000% of the dry weight of the batch. One-third, carbon powder addition is 6% of Glauber's salt weight) as clarifier etc.; Wherein, the consumption of glass raw material carries out conversion weighing according to the amount of glass oxide, and the amount of glass oxide is respectively (unit: kilogram): SiO 2 73, Al 2 o 3 0.10,K 2 O 0.01, Na 2 O14, CaO9, MgO3, Li 2O 0.5, the consumption of rare earth tailings A is 1 kilogram. 1
[0030] During the implementation process, the melting temperature in the melting pool is 1402°C, the clarifying and homogenizing temperature is 1402°C, the molding temperature in the tin bath is 950°C, and the annealing temperature is 557°C. The product is flat ...
Embodiment 2
[0038] The utilization and processing method of the glass tank kiln are the same as in Example 1, except that different glass batch materials are used. The amounts of glass oxides in the raw materials of this example are (unit: kilogram): SiO 2 70, Al 2 o 3 0.01,K 2 O 0.01, Na 2 O 10, CaO 5, MgO 2, Li 2 O 2.0, the amount of rare earth tailings B is 2 kg.
Embodiment 3
[0040] The utilization and processing method of the glass tank kiln are the same as in Example 1, except that different glass batch materials are used. The amounts of glass oxides in the raw materials of this example are (unit: kilogram): SiO 2 75, Al 2 o 3 1.5,K 2 O 0.5, Na 2 O15, CaO10, MgO4, Li 2 O 0.01, the amount of raw material rare earth tailings A is 0.01 kg.
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Abstract
The utility model relates to float glass, batch of the float glass and a production method of the float glass. The compositions of the float glass include silicate glass basic oxide, and 0.01 to 2 percent of lithium oxide by weight and rare earth oxide, wherein, the rare earth is at least three kinds of lanthanum, cerium, yttrium, praseodymium and neodymium, which is sourced from the gangue of the rare earth. The batch of the float glass is mixed by the silicate glass basic raw material and the additives, in weight percent, 87.02-106.0:0.02-4. The additives are the lithium carbonate Li2Co3 and the gangue of the rare earth, and the batch is made into the float glass through a float-glass melting kiln. For the lithium oxide and the rare earth are added, the present invention reduces the melting temperature of the glass, which can be applied to the production of the large-scale float glass while satisfying the electrics, the calorifics, and the stable chemical performance. The float glass concerned in the present invention is more applicable to producing the chemical toughened glass.
Description
technical field [0001] The invention relates to a float glass, in particular to a silicate glass containing lithium and doped with rare earth tailings, which is used for making common float glass, especially suitable for making chemically toughened glass. Background technique [0002] Glass production enterprises have always been "double high" enterprises, with high energy consumption and high pollution. This is mainly due to the imperfect composition of the glass, resulting in a higher melting temperature of the glass. The melting and clarifying temperature refers to the temperature corresponding to the viscosity of 10Pa·S, which is an important index in the glass manufacturing process. A higher melting and clarifying temperature (such as 1440°C) will cause a series of adverse consequences, such as the serious erosion of the glass liquid on the refractory material of the tank wall, which will reduce the life of the glass tank kiln, form a huge waste, and affect the quality...
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