阅读说明：本技术 一种玻璃配合料熔制方法 (Glass batch melting method ) 是由 张小苏 于 2018-06-26 设计创作，主要内容包括：本发明公开了一种玻璃配合料熔制方法,其按照下述步骤进行：(1)在玻璃配合料中掺入0.5wt%~3wt%的粘结剂和6wt%~8wt%的水,混匀,压制成3~25mm的球形粒料,并压制成3~25mm的球形粒料；(2)将球形粒料加入至回转式加热炉中,于1020~1250℃预热0.5~2h,被烧结密实化的球形粒料从回转式加热炉的出口加至玻璃熔窑中。本发明将玻璃配合料中的碳酸盐分解转移到玻璃熔窑之外进行,大大地降低了玻璃配合料中的气体含量,有效提高了热量的传递,缩短了玻璃澄清、均化的时间,相当于在不扩大玻璃熔窑面积的前提下,提高了其单线产量,降低了能源消耗；本发明可以实现在目前熔窑规模不扩大的条件下增加熔化量20%~30%。(The invention discloses a glass batch melting method which comprises the following steps of (1) adding 0.5wt% ~ wt% of a binder and 6wt% ~ wt% of water into a glass batch, uniformly mixing, pressing into spherical granules of 3 ~ mm and pressing into spherical granules of 3 ~ mm, (2) adding the spherical granules into a rotary heating furnace, preheating at 1020 ~ ℃ for 0.5 ~ h, and adding the sintered and densified spherical granules into a glass melting furnace from an outlet of the rotary heating furnace.)

1. A glass batch melting method is characterized by comprising the following steps:

(1) 0.5wt% ~ 3wt% of a binder and was added to the glass batch and pressed into 3 ~ 25mm spherical pellets;

(2) the spherical granules are added into a rotary heating furnace and pre-sintered for 0.5 ~ 2h at 1020 ~ 1250 ℃, and the sintered and densified spherical granules are added into a glass melting furnace from the outlet of the rotary heating furnace.

2. A glass batch melting method according to claim 1, wherein in step (1), the glass batch is pressed into spherical pellets by using a pair of rollers having a semicircular concave surface on the surface.

3. A glass batch melting process according to claim 1, characterised in that the binder is water glass or methyl cellulose.

Technical Field

The invention belongs to the technical field of glass manufacturing, and particularly relates to a glass batch melting method.

Background

The plate glass is made up of powdered raw materials through crushing, sieving, weighing and mixing. The loose materials are easy to generate layering and powder flying in the processes of conveying, storing and the like, and the batch materials which are just fed into the melting furnace are easy to be blown by flame and taken out of the melting furnace, so that the composition of glass is changed, the crown and the regenerator of the melting furnace are corroded, and the environment is polluted;

the loose form of the batch is fed into the melting furnace, and the bulk density is low, so the efficiency of heating the batch by the flame is low. In addition, the batch is put into the melting furnace with a certain thickness, and the heat conduction performance of the loose batch is particularly poor, so the process of forming silicate by heating is long, the heat exchange efficiency is low, and the melting quality is influenced. Although the scale of the glass melting furnace is continuously enlarged at present, the problem is not solved all the time;

the structure and the melting method of the current glass melting furnace determine that the silicate formation, the glass clarification and the glass homogenization in the five processes of glass melting are completed in the same structure. The more gaseous components are entrained in the batch, the longer the fining, homogenization time required for the glass melt. The continuous expansion of the glass melting furnace is limited from another aspect;

along with the continuous expansion of the glass melting furnace, the span of the cross-sectional area of the glass melting furnace is also larger and larger, the self weight of the melting furnace is continuously increased, and higher requirements are provided for a steel structure and refractory materials of the glass melting furnace, so that the yield and quality of glass are improved, and the energy consumption and the exhaust emission are reduced more and more difficult from the perspective of expanding the single line scale on the premise of not changing the glass melting mode.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a glass batch melting method, which is characterized in that decomposition of carbonate and formation of silicate in a glass batch are completed by transferring the raw materials in a traditional melting furnace to a rotary heater outside the melting furnace, the melting amount can be increased by 20% ~ 30% under the condition that the scale of the melting furnace is not enlarged at present, the melting quality of glass is improved, and the effects of energy conservation and emission reduction are achieved.

In order to solve the technical problems, the invention adopts the technical scheme that:

a pre-sintering treatment process of glass batch comprises the following steps:

(1) 0.5wt% of ~ 3wt% of binder and 6wt% of ~ 8wt% of water are added into the glass batch, mixed evenly and pressed into spherical granules of 3 ~ 25 mm;

(2) the spherical granules are added into a rotary heating furnace and pre-sintered for 0.5 ~ 2h at 1020 ~ 1250 ℃, and the sintered and densified spherical granules are added into a glass melting furnace from the outlet of the rotary heating furnace.

The method has the advantages that (1) carbonate in the glass batch is decomposed and transferred outside the glass melting furnace, so that the gas content in the glass batch is greatly reduced, the heat transfer is effectively improved, the time for clarifying and homogenizing the glass is shortened, the single-line yield is improved and the energy consumption is reduced on the premise of not enlarging the area of the glass melting furnace, the melting amount can be increased by 20% ~ 30% under the condition of not enlarging the scale of the glass melting furnace at present, and (2) the heat source of the rotary heating furnace is part of smoke generated by fuel combustion in the glass melting furnace, the insufficient heat is supplied by a burner, and a large amount of energy is saved.

Detailed Description

The invention will be further illustrated by the following examples