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Ceramic sintering fluxing agent

A technology of flux and ceramics, applied in the field of building materials, can solve the problems of high energy consumption, achieve the effects of lower firing temperature, easy promotion and low price

Inactive Publication Date: 2008-07-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem of high energy consumption in the firing process of materials, the present invention proposes a new type of fluxing method aimed at reducing the firing temperature of materials—gradual local fluxing method

Method used

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  • Ceramic sintering fluxing agent

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Embodiment Construction

[0026] 1. A ceramic firing flux containing 35% B by mass percent 2 o 3 , the mass percentage is 30% K 2 O+Na 2 O, the mass percent is 35% CaF 2 ;

[0027] 2. A ceramic firing flux containing 25% B by mass percent 2 o 3 , the mass percentage is 35% of K 2 O+Na 2 O, the mass percent is 40% CaF 2 ;

[0028] 3. A ceramic firing flux containing 30% B by mass percent 2 o 3 , K with a mass percentage of 28% 2 O+Na 2 O, mass percent is 42% CaF 2 ;

[0029] 4. A ceramic firing flux containing 24% B by mass percent 2 o 3 , 40% by mass of PbO, 36% by mass of CaF 2 ;

[0030] 5. A ceramic firing flux containing 20% ​​B by mass percent 2 o 3 , 49% by mass of PbO, 31% by mass of CaF 2

[0031] 6. A ceramic firing flux containing 27% B by mass percent 2 o 3 , 45% by mass of PbO, 28% by mass of CaF 2 ;

[0032] 7. A ceramic firing flux containing 25% V by mass percent 2 o 5 , the mass percentage is 43% of Bi 2 o 3 , LiF+AlF with a mass percentage of 32% 3 ;

[...

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Abstract

The present invention is ceramic sintering fluxing agent, and belongs to the field of building material technology. The method of the present invention is that the first level fluxing agent capable of generating solid solution of lower smelting point is used in fluxing the second level fluxing agent capable of generating solid solution of higher smelting point, the second level fluxing agent is used in fluxing the third level fluxing agent, and so on to complete the sintering of the material at relatively low temperature and lowered power consumption. The ceramic sintering fluxing agent of the present invention is a composite fluxing agent comprising B2O3, K2O+Na2O and CaF2 separately as the first level, the second level and the third level fluxing agent, or comprising Bi2O3, PbO and CaF2, or comprising V2O5, Bi2O3 and LiF+AlF3. It is added into sintering process in the amount of 0.01-0.5 % to lower the sintering temperature by 100 -170 deg.c.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a ceramic firing flux. technical background [0002] As an important production department in the building materials industry, the firing process of ceramic products is characterized by high temperature and high energy consumption. The most fundamental way to reduce energy consumption in the firing process is to significantly reduce the firing temperature of materials. At present, there are two main ways to reduce the firing temperature: (1) Grinding the fired raw materials into ultra-fine powders with very small particle sizes, some of which are ground to submicron or nanometer levels, greatly increasing the contact of raw materials The surface area increases the total surface energy of the raw material, thereby strengthening the firing process of the material; (2) By adding a compound with a single fluxing effect, it forms a low melting point solid solution with the main raw ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/63C04B35/64
Inventor 夏德宏邓娜邬传谷
Owner UNIV OF SCI & TECH BEIJING
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