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Method for manufacturing glass-ceramics

A manufacturing method and technology of glass-ceramics, applied in glass production, etc., can solve the problems of secondary pollution and high production costs, and achieve the effects of eliminating pollution, shortening processing time, and reducing taxes

Inactive Publication Date: 2008-05-21
内蒙古科韵环保材料股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, many of the above methods need to add chemical raw materials such as additives and nucleating agents in the manufacturing process, and there are problems such as secondary pollution and high production costs.
At the same time, in the preparation process, the melting casting method and the melting sintering method are generally used to prepare architectural glass-ceramic products. Both of these two processes need to go through two high-temperature processes (glass melting, microcrystallization treatment) and consume a lot of energy.

Method used

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  • Method for manufacturing glass-ceramics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The process flow is shown in Figure 1,

[0026] 1. Powder preparation

[0027] The rare earth tailings used are taken from Baotou Iron and Steel Rare Earth Plant. The chemical composition of rare earth tailings is shown in Table 1; the chemical composition of coal gangue is shown in Table 2; the chemical composition of feldspar is shown in Table 3. Weigh the rare earth tailings, coal gangue and feldspar according to the ratio of raw materials: balls of 1:2, and put them into the ball mill tank (the total volume of the charge should be less than 2 / 3 of the ball mill tank volume), and ball mill for 24 hours.

[0028] 2. Screening

[0029] The ball-milled rare earth tailings powder, coal gangue, and feldspar powdered raw materials are respectively passed through a 325-mesh sieve, and the prepared powder is placed in a powder bag for later use.

[0030] 3. Ingredients

[0031] The rare earth tailings powder: feldspar: coal gangue are respectively weighed in a weight ratio of 10...

Embodiment 2

[0042] The process flow is shown in Figure 1,

[0043] 1. Powder preparation

[0044] The rare earth tailings used are taken from Baotou Iron and Steel Rare Earth Plant. The chemical composition of rare earth tailings is shown in Table 1; the chemical composition of coal gangue is shown in Table 2; the chemical composition of feldspar is shown in Table 3. Weigh the rare earth tailings, coal gangue and feldspar according to the ratio of raw materials: balls of 1:2, and put them into the ball mill tank (the total volume of the charge should be less than 2 / 3 of the ball mill tank volume), and ball mill for 24 hours.

[0045] 2. Screening

[0046] The ball-milled rare earth tailings powder, coal gangue, and feldspar powdered raw materials are respectively passed through a 325-mesh sieve, and the prepared powder is placed in a powder bag for later use.

[0047] 3. Ingredients

[0048] The rare earth tailings powder: feldspar: coal gangue are respectively weighed in a weight ratio of 10...

Embodiment 3

[0059] The process flow is shown in Figure 1,

[0060] 1. Powder preparation

[0061] The rare earth tailings used are taken from Baotou Iron and Steel Rare Earth Plant. The chemical composition of rare earth tailings is shown in Table 1; the chemical composition of coal gangue is shown in Table 2; the chemical composition of feldspar is shown in Table 3; and the chemical composition of limestone is shown in Table 4. Weigh the rare earth tailings, coal gangue, feldspar, and limestone according to the ratio of raw materials: balls of 1:2, and put them into the ball mill tank (the total volume of the material should be less than 2 / 3 of the ball mill tank volume), and ball mill for 24 hours.

[0062] 2. Screening

[0063] The ball-milled rare earth tailings powder and limestone, coal gangue, and feldspar powdery raw materials are respectively passed through a 325-mesh sieve, and the prepared powder is put into a powder bag for use.

[0064] 3. Ingredients

[0065] The rare earth tail...

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Abstract

The invention relates to a microcrystalline glass preparation method, which belongs to the comprehensive utilization of industrial wastes. The invention is characterized in that rare earth tailing powder, feldspar and coal gangue are respectively filled in a ball mill tank in weight proportion of 100 to 8.5-25 to 9.5-17 to 8-22. Through the screening, the proportioning, the material mixing, the granulation, the molding, the drying, the sintering and the micro-crystallization, a main demanded crystal phase is fully precipitated from the sintered material. The powder obtained from the granulation is ball shaped. The molding pressure is 30-100MPa. When the micro-crystallization thermal treatment is finished, the sintered green body lowers to be at the room temperature with the furnace. The invention changes wastes into valuables, solves the secondary pollutions, improves the utilization ratio of industrial wastes, shortens the processing time, improves the working efficiency and reduces the energy consumption. The technology is simple, and the production cost is low. The nucleation activation energy is lowered, the nucleation and the crystallization of glass are promoted, and the micro-glass is finer. Therefore, the mechanical performance of the microcrystalline glass is improved and the cost for producing the tailings microcrystalline glass is greatly lowered.

Description

1. Technical Field: [0001] The invention relates to a method for manufacturing glass-ceramics. Specifically, it is a method for manufacturing glass-ceramics using pure natural raw materials of rare dressing tailings, coal gangue, feldspar and limestone, and belongs to the comprehensive utilization of industrial wastes. 2. Background technology: [0002] With the development of the economy, the demand for coal and rare earths is increasing, and their output is increasing day by day. As a result, industrial wastes such as rare beneficiation tailings and coal gangue continue to increase. These wastes not only occupy a lot of land, but also cause serious pollution to the surrounding water resources and soil. In recent years, some people have used fly ash, coal-fired water quenching slag, etc., to produce high value-added products-glass-ceramic plates for architectural decoration. The fly ash content reaches more than 60%. Using fly ash to produce glass-ceramics can reduce the cost of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C6/10C03B32/02
CPCY02P40/57
Inventor 李保卫贾晓林高占勇
Owner 内蒙古科韵环保材料股份公司
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