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Method for producing glass fibre by utilization of quartzitic sandstone

A technology of glass fiber and white foam stone, which is applied in the field of glass fiber manufacturing to achieve the effect of rich content, saving raw material cost and good quality

Active Publication Date: 2013-09-25
JUSHI GROUP CHENGDU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sepiopolite has been used as a refractory material for low-end kilns in the past, and there is no detailed record in the current published materials and documents for the production of glass fiber from leucoporite.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for producing glass fiber by using lepiolite, it includes the following steps: S1, weighing the following raw materials according to the following parts by weight for use: 25 parts by weight of leucophyllite, 35 parts by weight of pyrophyllite, 5.5 parts by weight of limestone, 15 parts by weight of dolomite, 16.5 parts by weight of boronite, and a total of 3.5 parts by weight of fluorite and clarifier, wherein 1.5 parts by weight of fluorite and clarifier are oxidation The clarifier is 2 parts by weight; and no quartz powder is added;

[0033] S2. Grinding the above-mentioned weighed raw materials into a powder with a particle size of 40 mesh;

[0034] S3, mixing the obtained powder for 100 seconds, so that the uniformity is greater than or equal to 95%;

[0035] S4. Send the uniformly mixed materials into the kiln for melting to obtain high-temperature molten glass. The melting temperature is controlled at 1600° C.; the melting time is 52 hours;

[0036] ...

Embodiment 2

[0043] The method for producing glass fiber by utilizing sepiolite, it comprises the following steps: S1, weighing the following raw materials according to the following parts by weight for use: 50 parts by weight of sepiolite, 9 parts by weight of alum Soil, 4 parts by weight of limestone, 15 parts of dolomite by weight, 17 parts of boronite and 4 parts by weight of fluorite and clarifier in total, wherein fluorite is 2.5 parts by weight, clarifier It is 1.5 parts by weight; the clarifying agent is a sulfuric acid type clarifying agent; and does not add quartz powder;

[0044] S2. Grinding the above-mentioned weighed raw materials into a powder with a particle size of 200 mesh;

[0045] S3, mixing the obtained powder for 200 seconds, so that the uniformity is greater than or equal to 95%;

[0046] S4. Feed the homogeneously mixed materials into the kiln for melting to obtain high-temperature molten glass. The melting temperature is controlled at 1570° C.; the melting time is...

Embodiment 3

[0054] The method for producing glass fiber by using lepiolite, it comprises the following steps: S1, weighing the following raw materials according to the following parts by weight for use: 28.5 parts by weight of white foam stone, 34.3 parts by weight of pyrophyllite, The limestone that is 23.5 parts by weight, the dolomite that is 10.3 parts by weight and the fluorite and clarifying agent that are 3.4 parts by weight in total, wherein fluorite is 1..9 parts by weight, and clarifying agent is 1.5 parts by weight; The clarifying agent is halogenated material clarifying agent; and do not add quartz powder;

[0055] S2. Grinding the above-mentioned weighed raw materials into a powder with a particle size of 400 mesh;

[0056] S3, mixing the obtained powder for 300 seconds, so that the uniformity is greater than or equal to 95%;

[0057] S4. Send the uniformly mixed materials into the kiln for melting to obtain high-temperature molten glass. The melting temperature is controlle...

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PUM

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Abstract

The invention discloses a method for producing glass fibre by the utilization of quartzitic sandstone. The method provided by the invention comprises the following steps: S1, respectively weighing the following raw materials for later use: by weight, 25-60 parts of quartzitic sandstone, 5-50 parts of pyrophillite or bauxitic clay, 3-18 parts of quicklime or 4-35 parts of limestone, 0-15 parts of dolomite, 0-17 parts of calciborite and 1-5 parts of fluorite and a clarificant; S2, grinding the raw materials into powders; S3, mixing; S4, founding; S5, entering an operation channel and flowing out; S6, preparing a precursor; and S7, drying to obtain the glass fibre. The method provided by the invention has the following beneficial effects: dependence on pyrophillite is minimized even eliminated; raw material cost is greatly reduced; production technology is stable; environmental pollution and occupational health risk are decreased; there is no need to add a lot of high-purity quartz; mixing is easy; and kiln burdening difficulty is low. The method has characteristics of energy conservation and high market competitive capacity.

Description

technical field [0001] The invention relates to the technical field of glass fiber production, in particular to a method for producing glass fiber by using lepiolite. Background technique [0002] Glass fiber is an inorganic non-metallic material with excellent performance, and its components are silica, alumina, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc. The basis of the glass fiber composition is SiO 2 : 62%, Al2O3: 14.7%, CaO: 22.3% ternary system, on this basis, add B 2 o 3 Replace part of SiO 2 , add MgO instead of part of CaO to form the current common glass fiber composition. The existing production of glass fiber composition is roughly the same, only slightly different in a small range. The range of variation is roughly SiO 2 : 53%~65%; CaO: 16%~25%; Al 2 o 3 : 10% to 17%; MgO: 0 to 8%. Glass fiber has the characteristics of insulation, heat resistance, corrosion resistance and high mechanical strength. It is mainly used as insulating ma...

Claims

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Application Information

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IPC IPC(8): C03C13/00C03C6/02
CPCC03C1/022C03C13/06
Inventor 向勇杨国明李向斌陈杰
Owner JUSHI GROUP CHENGDU
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