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Method of preparing glass-ceramic with nepheline tailings being main raw material

A main raw material, a technology of glass-ceramics, applied in the field of preparation of glass-ceramics, can solve the problem of single utilization of nepheline tailings, etc., and achieve the effect of excellent wear resistance

Pending Publication Date: 2018-11-16
四川一名微晶科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Developed countries in the world use nepheline tailings as a raw material for aluminum smelting and alkali metal mineral resources. Therefore, Canada and Germany are rich in potassium salts and sodium salts. Preparation of glass-ceramics can effectively utilize various oxides in minerals to produce high-value-added glass-ceramic products

Method used

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  • Method of preparing glass-ceramic with nepheline tailings being main raw material
  • Method of preparing glass-ceramic with nepheline tailings being main raw material
  • Method of preparing glass-ceramic with nepheline tailings being main raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Accurately weigh the following raw materials and send them to the mixer for mixing (mixing time is 4 minutes, add 26Kg of water).

[0041] raw material name

Sodium fluorosilicate

Nepheline tailings

Quartz sand

heavy calcium

Weight (kg)

25.2

433.5

10.2

57.9

[0042] Wherein, the main component weight percentage content of various raw materials is shown in the following table:

[0043] chemical composition

Sodium fluorosilicate

Nepheline tailings

Quartz sand

heavy calcium

F

59.43

0.00

0.00

0.00

Al 2 o 3

0.00

23.65

0.00

0.00

SiO 2

31.28

53.38

99.12

0.00

CaO

0.00

1.91

0.00

54.77

[0044] 2. Send the above-mentioned mixture into the all-electric melting furnace for melting. The melting temperature is 1550°C. After clarification and homogenization, the melted glass enters the material channel through the liquid flow...

Embodiment 2

[0048] 1. Accurately weigh the following raw materials and send them to the mixer for mixing (mixing time is 4 minutes, add water 17Kg.).

[0049] raw material name

Sodium fluorosilicate

Nepheline tailings

Quartz sand

heavy calcium

Weight (kg)

25.2

338.4

82.9

97.8

[0050] 2. Send the above-mentioned mixture into the all-electric melting furnace for melting. The melting temperature is 1500°C. After clarification and homogenization, the melted glass enters the material channel through the liquid flow hole and the ascending channel, and the temperature drops to 1300°C, and then enters the calendering process. The working pool enters the annealing kiln after being calendered and formed by a calender (forming temperature 1050°C).

[0051] 3. Anneal the rolled glass plate annealing kiln. The temperature of entering the kiln is 650°C. After holding at 650°C for 15 minutes, cool down to 580°C at a rate of 3°C / min, and then cool down to...

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Abstract

The invention discloses a method of preparing glass-ceramic with nepheline tailings being main raw material. The method includes: 1) raw material selection; 2) raw material mixing; 3) fusion of mixedraw material; 4) calendering shaping; 5) annealing; 6) crystallization. The glass-ceramic is 500-550 MPa in compressive strength and is 80-100 MPa in bending strength. The method can be used for preparing the high-additional value glass-ceramic with the nepheline tailings.

Description

technical field [0001] The invention relates to a method for preparing glass-ceramics, in particular to a method for preparing glass-ceramics with nepheline tailings as the main raw material. Background technique [0002] Glass-ceramic not only has the basic properties of glass, but also has the polycrystalline characteristics of ceramics. It combines the characteristics of glass and ceramics and becomes a unique new type of material. Due to its high mechanical strength, high hardness, good wear resistance, strong corrosion resistance, good chemical and thermal stability, and adaptability to harsh environments, glass-ceramic has developed rapidly in the world in recent years. [0003] Traditional glass-ceramic production mostly uses mineral raw materials such as quartz sandstone, which contains relatively simple chemical components. Therefore, the types of other mineral raw materials that need to be added are diverse and complicated, which makes production inconvenient. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/10C03C10/02C03C4/00C03C6/06C03B25/00C03B32/02
CPCC03B25/00C03B32/02C03C1/002C03C4/00C03C10/0018C03C10/0036C03C10/0063
Inventor 秦小平秦刚彭文钢徐国梁罗云龙邓龚铃姜小元王刚琳
Owner 四川一名微晶科技股份有限公司
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