Preparation method of vitrified small ball
A technology of vitrified microbeads and pearls, which is applied in the field of preparation of thermal insulation materials, can solve the problems that the surface of vitrified microbeads is not hard enough, the thermal insulation performance of vitrified microbeads is poor, and cannot meet the requirements of buildings, so as to achieve thermal insulation Good performance, hard appearance and long service life
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Embodiment 1
[0016] see figure 1 As shown, the present invention is a preparation method for preparing vitrified microbeads using a vitrification furnace. The vitrification furnace has 7 different temperature zones in sequence, and it includes the following process steps: surface softening → inner softening → crystallization water Gasification→Expansion without breaking the shell→Surface vitrification closed cells→Surface closed cells strengthened→Re-strengthened→The finished product is obtained. Specifically, (1) In the first stage of the vitrification furnace, the inorganic ore particles are placed in an ordinary furnace for surface softening. The specific model of the vitrification furnace used is RZ-540-12, and the softening temperature is approximately The temperature is 880°C-930°C, which lays the foundation for not breaking the shell during expansion. (2) In the second stage, the inorganic ore particles are further heated to soften the inner core, laying the foundation for increasi...
Embodiment 2
[0018] (1) In the first stage, the inorganic ore particles are placed in an ordinary vitrification furnace for surface softening. The temperature during softening is roughly 880°C-930°C, which lays the foundation for not breaking the shell during expansion. (2) In the second stage, the inorganic ore particles are further heated to soften the inner core, laying the foundation for increasing the vacuum degree of the vitrified microbeads. The softening temperature at this time is 950°C-1000°C. (3) In the third stage, the inorganic ore particles are further heated to vaporize the crystallization water. The gasification degree is 990°C-1040°C. Due to too much crystallization water, the gasification expansion force is too large, and the shell is easy to break Once the shell is broken, the vitrified microbeads will not produce a partial vacuum, their strength will decrease and their water absorption will increase; if there is too little crystal water and the gasification expansion for...
Embodiment 3
[0020] (1) In the first stage, the inorganic ore particles are placed in an ordinary vitrification furnace for surface softening. The temperature during softening is roughly 880°C-930°C, which lays the foundation for not breaking the shell during expansion. (2) In the second stage, the inorganic ore particles are further heated to soften the inner core, laying the foundation for increasing the vacuum degree of the vitrified microbeads. The softening temperature at this time is 950°C-1000°C. (3) In the third stage, the inorganic ore particles are further heated to vaporize the crystallization water. The gasification degree is 990°C-1040°C. Due to too much crystallization water, the gasification expansion force is too large, and the shell is easy to break Once the shell is broken, the vitrified microbeads will not produce a partial vacuum, their strength will decrease and their water absorption will increase; if there is too little crystal water and the gasification expansion for...
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Abstract
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