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Method for preparing raw material of float glass

A float glass and raw material technology, which is applied in the field of preparation of feldspar-free float glass raw materials, can solve problems such as difficulty in achieving uniform mixing, and achieve the effects of reducing the difficulty of quality control, reducing production costs, and reducing exhaust emissions

Inactive Publication Date: 2010-01-27
HUBEI SANXIA NEW BUILDING MATERIALS CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0013] Generally, 325 mesh slender stone powder is used, and the proportion of the dosage in the batch is very small, so it is difficult to achieve uniform mixing in the process.

Method used

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  • Method for preparing raw material of float glass
  • Method for preparing raw material of float glass

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Embodiment

[0023] Dangyang silica sand (local sand for short) chemical composition used in the present invention is as shown in table 3:

[0024] Table 3 Chemical composition of local sand Unit: %

[0025] serial number

SiO 2

al 2 o 3

Fe 2 o 3

CaO

MgO

Na 2 O+K 2 o

total

1

95.96

1.85

0.120

0.05

0.01

1.43

99.42

2

95.91

1.91

0.120

0.08

0.01

1.43

99.46

3

96.04

1.9

0.120

0.08

0.01

1.43

99.58

[0026] Local silica sand particle grade

[0027] >0.8mm=0.10%; 0.8-0.5mm=0.50%; 0.5-0.3mm=39.90%;

[0028] 0.3-0.1mm = 49.80%; <0.1mm = 9.40%;

[0029] Al in local silica sand 2 o 3 Evenly distributed in SiO in the form of potassium feldspar 2 In the particle composition, the content of potassium and sodium is higher than that of foreign silica sand, and the melting temperature is lower than...

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Abstract

The invention provides a method for preparing the raw material of float glass, wherein the raw material is formed by mixing ecdemic silica sand, Dangyang silica sand, calcite, dolomite, calcined soda, mirabilite, powdered carbon, shattered glass, etc. The method for preparing the raw material of the float glass adds no feldspar in the raw material, avoids brush line, nepheline and knob caused by large grain in feldspar powder, reduces the usage amount of ecdemic sand, and reduces the phenomenon of a concretion defect caused by egg-shaped float slag on the surface of the glass. The material preparing scheme without the feldspar reduces quality control difficulty, improves the melting condition in a glass furnace, and obviously reduces the usage amount of natural gas. Small impurity, the knob and the brush line in the glass product are reduced step by step, optical deformation is more than 60 degrees, daily melting amount is improved at 600t under the same condition, daily yield is increased by 1500 weight case, and the consumption of the natural gas is reduced by 0.3m<3>in each weight case.

Description

technical field [0001] The invention relates to the technical field of float glass production, in particular to a method for preparing a feldspar-free float glass raw material. Background technique [0002] Glass is made of acidic oxides (SiO 2 ), basic oxides (Na 2 O), alkaline earth metal oxides (CaO, MgO), neutral oxides (Al 2 o 3 ) combined. [0003] In order to obtain reasonable technical and economic indicators in production, usually pure oxides are rarely used as raw materials for glass, but natural mineral raw materials are mostly used. Raw materials for the production of float glass can be divided into two categories: main raw materials and auxiliary raw materials according to their different dosages and functions. For float glass, the main raw material introduces SiO 2 、AI 2 o 3 , CaO, MgO, Na 2 O (or K 2 O) and other oxides determine the physical and chemical properties of the glass. Auxiliary raw materials are raw materials that enable glass to obtain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C6/04
Inventor 徐麟吕在国张金奎陈永俊蒋葵玲李平黄世志文革许建国
Owner HUBEI SANXIA NEW BUILDING MATERIALS CO LTD
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