Coffee microcrystalline glass stone prepared from molybdenum tailings and preparation method of coffee microcrystalline glass stone

A technology for glass-ceramic and molybdenum tailings, which is applied in glass manufacturing equipment, glass forming, manufacturing tools, etc., can solve the problem of impurity in color and texture of glass-ceramic, limiting the application range of glass-ceramic, and poor crystallization effect. and other problems, to achieve the effect of high flexural strength, dense microstructure and good thermal shock resistance

Pending Publication Date: 2021-06-15
海南海控特玻科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition of molybdenum tailings is relatively complex, and its mineral composition is often accompanied by various mineral components such as iron, sulfur, titanium, copper, tungsten, and manganese. After flotation and magnetic separation, molybdenum tailings still contain More impurities, and too many impurities will cause the color and texture of the prepared glass-ceramics to be mixed and impure, and the overall crystallization effect is often poor, thus limiting the application range of this type of glass-ceramics, especially in Architectural decoration field with high requirements on product appearance
Generally, in the melting of glass-ceramics composed of molybdenum tailings as raw material, it is usually to reduce the amount of molybdenum tailings to obtain better melting quality and appearance, but reducing the amount of molybdenum tailings cannot achieve " Efficient overall utilization of tailings, turning waste into treasure" target requirements

Method used

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  • Coffee microcrystalline glass stone prepared from molybdenum tailings and preparation method of coffee microcrystalline glass stone
  • Coffee microcrystalline glass stone prepared from molybdenum tailings and preparation method of coffee microcrystalline glass stone
  • Coffee microcrystalline glass stone prepared from molybdenum tailings and preparation method of coffee microcrystalline glass stone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A brown glass-ceramic stone prepared from molybdenum tailings, comprising the following raw materials: by mass percentage, molybdenum tailings 50%, limestone 26%, dolomite 9.0%, silica sand 5.5%, sodium fluorosilicate 4.2%, chromium Iron ore powder 3.5%, titanium dioxide 1.8%.

[0034] A method for preparing a brown glass-ceramic stone prepared from molybdenum tailings, comprising the following steps:

[0035] (1) Preheating: After mixing molybdenum tailings, limestone, dolomite, silica sand, sodium fluorosilicate, chromite powder and titanium dioxide evenly, pour it into a quartz crucible that has been preheated to 800°C, and place it in the same Keep the quartz crucible in an isothermal high-temperature furnace for 35 minutes to fully preheat the mixture;

[0036] (2) Melt molding: heat the preheated raw material to 1490°C at a rate of 10°C / min and keep it warm for 2 hours, then pour the obtained molten glass on the mold and press for molding;

[0037] (3) Nucleatio...

Embodiment 2

[0040] A brown glass-ceramic stone prepared from molybdenum tailings, comprising the following raw materials: by mass percentage, molybdenum tailings 52%, limestone 26.7%, dolomite 8.6%, silica sand 4.0%, sodium fluorosilicate 4.0%, chromium Iron ore powder 3.1%, titanium dioxide 1.6%.

[0041] A method for preparing a brown glass-ceramic stone prepared from molybdenum tailings, comprising the following steps:

[0042] (1) Preheating: After mixing molybdenum tailings, limestone, dolomite, silica sand, sodium fluorosilicate, chromite powder and titanium dioxide evenly, pour it into a quartz crucible that has been preheated to 850°C, and place it in the same Keep the quartz crucible in an isothermal high-temperature furnace for 30 minutes to fully preheat the mixture;

[0043] (2) Melt molding: heat the preheated raw material to 1500°C at a rate of 10°C / min and keep it warm for 2 hours, then pour the obtained molten glass on the mold and press for molding;

[0044] (3) Nucleat...

Embodiment 3

[0047] A brown glass-ceramic stone prepared from molybdenum tailings, comprising the following raw materials: by mass percentage, molybdenum tailings 53%, limestone 27%, dolomite 8.0%, silica sand 3.0%, sodium fluorosilicate 4.5%, chromium Iron ore powder 3.0%, titanium dioxide 1.5%.

[0048] A method for preparing a brown glass-ceramic stone prepared from molybdenum tailings, comprising the following steps:

[0049] (1) Preheating: After mixing molybdenum tailings, limestone, dolomite, silica sand, sodium fluorosilicate, chromite powder and titanium dioxide evenly, pour it into a quartz crucible that has been preheated to 900°C, and place it in the same Keep the quartz crucible in an isothermal high-temperature furnace for 25 minutes to fully preheat the mixture;

[0050] (2) Melt molding: heat the preheated raw material to 1510°C at a rate of 10°C / min and keep it warm for 2 hours, then pour the resulting molten glass on the mold and press to form it;

[0051] (3) Nucleatio...

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Abstract

The invention relates to a coffee microcrystalline glass stone prepared from molybdenum tailings and a preparation method thereof, the method is characterized in that the molybdenum tailings are used as a main raw material,according to the characteristic of high iron content of the molybdenum tailings, sodium fluosilicate, chromite powder and titanium dioxide are selected as nucleating agents, and the chromite powder and the titanium dioxide are used as coloring agents. The main temperature system of the method is as follows: preheating a batch at 800-900 DEG C, and melting at 1490-1510 DEG C; and after molding, directly nucleating at 710-740 DEG C, and crystallizing at 810-860 DEG C. The method has the advantages that the molybdenum tailings containing many impurities can be integrally utilized, the proportion of the molybdenum tailings in the raw materials is larger than 50%, and the prepared microcrystalline glass stone has the uniform brown color, the good building decoration effect, the bending strength of the microcrystalline glass stone reaches up to 80-100 MPa, the thermal shock resistance of the microcrystalline glass stone is good, and the application range of the microcrystalline glass stone is wide.

Description

technical field [0001] The invention relates to the technical field of new materials for environmental protection and utilization of waste, in particular to a brown glass-ceramic stone material prepared from molybdenum tailings and a preparation method thereof. Background technique [0002] Glass-ceramics, also known as glass ceramics, is a type of polycrystalline material obtained through controlled crystallization of glass. It has both some properties of glass and some properties of crystalline materials. As a building material, its performance combines the advantages of glass, ceramics, and stone; as a functional and structural material, it has been widely used in the fields of microelectronics technology, biomedicine, national defense cutting-edge technology, machinery manufacturing, etc. a wide range of applications. [0003] In recent years, with the development of the national economy and industrial technology, the development of mineral resources has continued to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16C03C4/02C03B19/02C03B32/02C03B25/00
CPCC03C10/16C03C4/02C03B19/02C03B32/02C03B25/00
Inventor 符有杰林鸿剑赵会峰周莉李军葛郝霞潘国治
Owner 海南海控特玻科技有限公司
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