CN104829123A - Glass strength increasing glass flux and preparation method thereof - Google Patents

Abstract

The invention relates to a glass strength increasing glass flux, which is prepared from the following raw materials by weight: 2-2.5 parts of cerium nitrate, an appropriate amount of distilled water, 6-7 parts of lithium carbonate, 1-1.5 parts of potassium carbonate, 0.6-0.8 part of lanthanum nitrate, 2-3 parts of sodium bicarbonate, 40-45 parts of bismuth oxide, 4-5 parts of boron oxide, 1.5-2 parts of silica sol, and an appropriate amount of ammonia water. According to the present invention, with the glass strength increasing glass flux, the glass melting can be promoted, the melting temperature is reduced by 90-120 DEG C, a lot of energy sources are saved, the air bubbles in the glass can be eliminated, and the compactness and the strength of the glass are increased; and with the process of the present invention, the nano-scale cerium oxide and the nano-scale lanthanum oxide are wrapped on the particle surface while lithium carbonate is added so as to progressively clarify, rapidly and completely eliminate the gas seeds, and improve the ultraviolet resistance of the glass.

Description

A kind of glass fusing assistant improving strength of glass and preparation method thereof

Technical field

The present invention relates to glass manufacturing area, particularly relate to a kind of glass fusing assistant improving strength of glass and preparation method thereof.

Background technology

Float glass is a kind of method that sheet glass is produced, in the production of float glass, there is a very important link to be put into continuously in the middle of melting furnaces by batch charger by admixtion to melt, formed even, pure, transparent through heat and meet forming requirements, the process of continuous in glass, single liquid phase, be one of main phase in glass manufacturing process, found speed and the reasonableness of founding and the Yield and quality of glass, qualification rate, production cost, fuel consumption and tank furnace life-span etc. are had a significant impact.The melting process of glass comprises 5 stages, i.e. the formation of the formation of silicate, glass, the clarification of glass, the homogenizing of glass and cooling.

In order to improve the quality of float glass, its temperature of fusion is improved constantly, and the temperature of current float glass smelting kiln flame space, up to 1580 DEG C, is generally Na for the composition of fluxing ₂o, generally has soda ash to introduce, Na ₂o has wide material sources, lower-cost feature as float glass fusing assistant, but it is limited to there is fluxing capabilities, and sodium ion easily migrates to glass surface, and glass can be made to produce the phenomenon of " mouldy ".

Also fluorite is usually adopted to introduce fluorochemical as fusing assistant in prior art.When using fluorite, in kiln, glass melting process is a pyroreaction, uses the glass metal containing fluorine element can cause Eroded to kiln pool wall, reduces the work-ing life of kiln and the security of production.And a large amount of fluorochemicals produced in process of production in air, cause topsoil with fume emission.

Therefore need to improve fusing assistant, to improve the performance of glass, save energy, extend the work-ing life of melting furnaces, protection of the environment.

Summary of the invention

The object of the present invention is to provide a kind of glass fusing assistant improving strength of glass, this fusing assistant can promote the fusing of glass, reduce temperature of fusion 90-120 DEG C, save a large amount of energy, Bubbles in Glass can be eliminated, improve compactness and the intensity of glass, improve the uv resistance of glass.

Technical scheme of the present invention is as follows:

Improve a glass fusing assistant for strength of glass, it is characterized in that being made up of the raw material of following weight part: cerous nitrate 2-2.5, distilled water are appropriate, Quilonum Retard 6-7, salt of wormwood 1-1.5, lanthanum nitrate 0.6-0.8, sodium bicarbonate 2-3, bismuth oxide 40-45, boron oxide 4-5, silicon sol 1.5-2, ammoniacal liquor are appropriate.

The production method of the glass fusing assistant of described raising strength of glass, is characterized in that:

(1) by sodium bicarbonate, Quilonum Retard, bismuth oxide, boron oxide mixing, pulverize, mix with silicon sol, dry, pulverize to particle diameter is at normal temperatures 1-100 micron, obtains powder;

(2) powder that (1) step obtains is added the distilled water of 3-4 times of weight part, ultrasonic disperse 10-15 minute, obtain A mixed slurry; By cerous nitrate, lanthanum nitrate mixing, add the distilled water of 2-3 times of weight part, stir, obtain B solution;

(3) A mixed slurry is heated to 60-80 DEG C, carries out magnetic agitation, add B solution while stirring, stir, then drip ammoniacal liquor, be adjusted to pH value to 9, stirring reaction 60-70 minute, obtains mixed slurry;

(4) mixed slurry (3) step obtained leaves standstill 24 hours, carries out suction filtration, and with distilled water wash filter cake 3-4 time, drying, obtains particle;

(5) particle that (4) step obtains is calcined 30-40 minute at 250-300 DEG C, take out, pulverize, mix with other remaining components, to obtain final product.

Coordinate sodium oxide to use during use, sodium oxide is introduced by sodium carbonate, and the amount of sodium oxide is the 14wt% of glass weight, and the usage quantity of this fusing assistant is the 2-2.5wt% of sodium oxide.

Beneficial effect of the present invention

Fusing assistant of the present invention can promote the fusing of glass, reduces temperature of fusion 90-120 DEG C, has saved a large amount of energy, can eliminate Bubbles in Glass, improves compactness and the intensity of glass; Present invention process made particle surface coated nano level cerium oxide, lanthanum trioxide, with the addition of Quilonum Retard simultaneously, can super capacity, eliminate seed rapidly and thoroughly, improve the uv resistance of glass, the industries such as electric-vacuum glass, aeronautical glasses, lightization can be widely used in.

Embodiment

Improve a glass fusing assistant for strength of glass, be made up of the raw material of following weight part (kilogram): cerous nitrate 2.3, distilled water are appropriate, Quilonum Retard 6.5, salt of wormwood 1.3, lanthanum nitrate 0.7, sodium bicarbonate 2.5, bismuth oxide 43, boron oxide 4.5, silicon sol 1.7, ammoniacal liquor are appropriate.

The production method of the glass fusing assistant of described raising strength of glass, is characterized in that:

(1) by sodium bicarbonate, Quilonum Retard, bismuth oxide, boron oxide mixing, pulverize, mix with silicon sol, dry, pulverize to particle diameter is at normal temperatures 1-100 micron, obtains powder;

(2) powder that (1) step obtains is added the distilled water of 3.5 times of weight parts, ultrasonic disperse 13 minutes, obtains A mixed slurry; By cerous nitrate, lanthanum nitrate mixing, add the distilled water of 3 times of weight parts, stir, obtain B solution;

(3) A mixed slurry is heated to 70 DEG C, carries out magnetic agitation, add B solution while stirring, stir, then drip ammoniacal liquor, be adjusted to pH value to 9, stirring reaction 65 minutes, obtains mixed slurry;

(4) mixed slurry (3) step obtained leaves standstill 24 hours, carries out suction filtration, with distilled water wash filter cake 3 times, dry, obtains particle;

(5) particle that (4) step obtains is calcined 35 minutes at 280 DEG C, take out, pulverize, mix with other remaining components, to obtain final product.

Coordinate sodium oxide to use during use, sodium oxide is introduced by sodium carbonate, and the amount of sodium oxide is the 14wt% of glass weight, and the usage quantity of this fusing assistant is the 2.3wt% of sodium oxide.

Experimental data: use this fusing assistant to produce glass, and utilize the high temperature viscosity of High Temperature Rotating viscosity apparatus tested glass, when the viscosity of glass melt reaches 10Pa.S, corresponding temperature of fusion is 1410 DEG C, lower than the float glass temperature of fusion not adding this fusing assistant 100 DEG C.

Claims (2)

1. improve a glass fusing assistant for strength of glass, it is characterized in that being made up of the raw material of following weight part: cerous nitrate 2-2.5, distilled water are appropriate, Quilonum Retard 6-7, salt of wormwood 1-1.5, lanthanum nitrate 0.6-0.8, sodium bicarbonate 2-3, bismuth oxide 40-45, boron oxide 4-5, silicon sol 1.5-2, ammoniacal liquor are appropriate.

2. the production method of the glass fusing assistant of raising strength of glass according to claim 1, is characterized in that:

(1) by sodium bicarbonate, Quilonum Retard, bismuth oxide, boron oxide mixing, pulverize, mix with silicon sol, dry, pulverize to particle diameter is at normal temperatures 1-100 micron, obtains powder;

(2) powder that (1) step obtains is added the distilled water of 3-4 times of weight part, ultrasonic disperse 10-15 minute, obtain A mixed slurry; By cerous nitrate, lanthanum nitrate mixing, add the distilled water of 2-3 times of weight part, stir, obtain B solution;

(3) A mixed slurry is heated to 60-80 DEG C, carries out magnetic agitation, add B solution while stirring, stir, then drip ammoniacal liquor, be adjusted to pH value to 9, stirring reaction 60-70 minute, obtains mixed slurry;

(4) mixed slurry (3) step obtained leaves standstill 24 hours, carries out suction filtration, and with distilled water wash filter cake 3-4 time, drying, obtains particle;

(5) particle that (4) step obtains is calcined 30-40 minute at 250-300 DEG C, take out, pulverize, mix with other remaining components, to obtain final product.