JPS5964543A - Carbon umber glass composition for electromelting furnace - Google Patents

Carbon umber glass composition for electromelting furnace

Info

Publication number
JPS5964543A
JPS5964543A JP17424182A JP17424182A JPS5964543A JP S5964543 A JPS5964543 A JP S5964543A JP 17424182 A JP17424182 A JP 17424182A JP 17424182 A JP17424182 A JP 17424182A JP S5964543 A JPS5964543 A JP S5964543A
Authority
JP
Japan
Prior art keywords
glass
carbon
glass composition
umber
furnace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17424182A
Other languages
Japanese (ja)
Inventor
Akihiko Shizunaga
静永 明彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YAMABISHI KK
Original Assignee
YAMABISHI KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YAMABISHI KK filed Critical YAMABISHI KK
Priority to JP17424182A priority Critical patent/JPS5964543A/en
Publication of JPS5964543A publication Critical patent/JPS5964543A/en
Pending legal-status Critical Current

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  • Glass Compositions (AREA)

Abstract

PURPOSE:To prepare a carbon umber glass stably without causing foaming nor eruption phenomenon, by using a glass raw material of specific composition containing more CaO component than in the conventional materials in a cold top type electromelting furnace. CONSTITUTION:A glass raw material consisting of the following composition: (A) 60-80wt% (SiO2+Al2O3+Fe2O3) optionally containing a small amount of TiO2 or MnO2, (B) 6-14wt% CaO, (C) 0-8wt% RO (R is alkaline earth metal), (D) 10-17wt% R2O (R is alkali metal) and (E) 0-0.2wt% SO3 is used for the aimed carbon umber glass.

Description

【発明の詳細な説明】 本発明は、コールドトップ方式電融炉で、カーボンアン
バーガラスを製造する組成に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composition for producing carbon amber glass in a cold top type electric melting furnace.

コールドトップ方式電融炉とは、その溶融槽において、
その上面に均等に原料を投入し、表面を常に冷たい原料
バッチで覆いlグら、下部でガラスを溶融する方式であ
る。
A cold-top electric melting furnace has a melting tank that
In this method, raw materials are poured evenly onto the top surface, the surface is always covered with a cold batch of raw materials, and the glass is melted at the bottom.

従来、コールドトップ方式の電融炉では、カーボンアン
バーガラスは、酸化還元反応のために起る発泡または噴
火現象のために、コールトド1.プを形成するために必
要なバッチ層を継続して維持することができず、カーボ
ンアンバーガラスを製造することはで@なかった。
Conventionally, in cold-top type electric melting furnaces, carbon amber glass has a cold 1. It was not possible to continuously maintain the batch layer necessary to form the carbon amber glass.

本発明の組成は、高温域では実用カーボンアンバーガラ
スとはy同じ粘度特性を持ち、作業温度域における粘度
は、カーボンアンバー着色ICよる温度勾配と、ガラス
自身の粘性勾配により粘性は増加するので、表面のガラ
ス層は急激に硬化し、前述のような発泡捷たは噴火現象
を防+Lでき、安定した上部のバッチ層を確実に継続し
て維持できるよう改良てれた組成で、コールトド、プ方
式電融炉でカーボンアンバーガラスを製造することを可
能にしたことである。
The composition of the present invention has the same viscosity characteristics as practical carbon amber glass in the high temperature range, and the viscosity in the working temperature range increases due to the temperature gradient caused by the carbon amber coloring IC and the viscosity gradient of the glass itself. The glass layer on the surface hardens rapidly, preventing foaming and eruption as described above, and has an improved composition that ensures the continuous maintenance of a stable upper batch layer. This made it possible to produce carbon amber glass in an electric melting furnace.

本発明の第2の効果は、燃焼炉では原ネ1投入ロ捷たは
溶融槽で、1日当り数回溶融ガラスを採取して、色調見
本などと比較してカーボン量を増減して色調調整しなけ
ればならず、大変手数を要している。一方この方式にお
いては、ガラスの溶融がバッチ層の下部で行われ雰囲気
の影響を受けないためカーボンアンバーガラスの色調調
整は、添加するカーボン量を増減する操作のみで極めて
単純化てれる。
The second effect of the present invention is that the molten glass is sampled several times a day in the combustion furnace by adding raw energy or in the melting tank, and the color tone is adjusted by increasing or decreasing the amount of carbon compared to the color sample. It has to be done and it takes a lot of effort. On the other hand, in this method, the glass is melted at the bottom of the batch layer and is not affected by the atmosphere, so the color tone adjustment of the carbon amber glass can be extremely simplified by simply increasing or decreasing the amount of carbon added.

本発明の第3の効果tま、原料単価の安い石灰を多量に
使用し、一方単価の高いソーダ灰を減することが可能と
なり、原料原価を低減できることになり、その工業的価
値は極めて犬である。
The third effect of the present invention is that it is possible to use a large amount of lime, which is cheap as a raw material, while reducing the amount of soda ash, which is expensive. It is.

引用文献 ガラス工学ハンドブック 昭和50会9−30280−References Glass Engineering Handbook 1975 Society 9-30280-

Claims (1)

【特許請求の範囲】 硫化物に炭素を配合したカーボンアンバーガラスを、コ
ールドトップ方式電融炉にて製造する場合に、CaO成
分を多量に使用することを特徴とする下表に示す範囲(
重i′%で表わしである)のガラス組成。 成  分 5i02 + At203 + Fe2O360〜80
CaO6〜14 RO、O〜8 R2010〜17 8030〜α2 上記5i02 + At203 + Fe2O31c与
えた%は、その配合物と共にガラスの中に不純物として
少量含有でれる任意のTiO2、MnO2tたはこの化
合物群のうちの他のいくつかを含むものとする。またR
OViアルカリ土金属(8)の酸化物を、R20はアル
カリ金属幅)の酸化物を、それぞれ示すものとする。
[Claims] When carbon amber glass containing sulfide and carbon is produced in a cold-top electric melting furnace, the range shown in the table below is characterized by using a large amount of CaO component (
glass composition (expressed in weight i'%). Component 5i02 + At203 + Fe2O360~80
CaO6~14 RO, O~8 R2010~17 8030~α2 5i02 + At203 + Fe2O31c The percentage given above is for any TiO2, MnO2t or this group of compounds that may be contained in a small amount as an impurity in the glass together with its formulation. This shall include some of the others. Also R
OVi represents an oxide of an alkaline earth metal (8), and R20 represents an oxide of an alkali metal (8).
JP17424182A 1982-10-04 1982-10-04 Carbon umber glass composition for electromelting furnace Pending JPS5964543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17424182A JPS5964543A (en) 1982-10-04 1982-10-04 Carbon umber glass composition for electromelting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17424182A JPS5964543A (en) 1982-10-04 1982-10-04 Carbon umber glass composition for electromelting furnace

Publications (1)

Publication Number Publication Date
JPS5964543A true JPS5964543A (en) 1984-04-12

Family

ID=15975177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17424182A Pending JPS5964543A (en) 1982-10-04 1982-10-04 Carbon umber glass composition for electromelting furnace

Country Status (1)

Country Link
JP (1) JPS5964543A (en)

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