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Solid-waste-based nanocrystalline cluster magnetic glass ceramic and preparation method thereof

A magnetic glass and nanocrystalline technology, which is applied in glass manufacturing equipment, glass furnace equipment, glass production, etc., can solve the problem of low reuse value and achieve high crystal phase purity, rich functional applications, and simple preparation process.

Pending Publication Date: 2021-08-17
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] High-silicon / iron-rich / boron-containing industrial solid waste (such as molybdenum, gold, copper and other tailings, Baiyan Obo iron tailings, stainless steel slag, ferrochrome slag, discarded boron / borosilicate glassware, boron mud, boron slag, etc.) has large output and low reuse value, but the main component it contains is precisely the preparation of B 2 o 3 -Fe 2 o 3 -SiO 2 Therefore, these industrial solid wastes can be used as raw materials for the development of boron-iron-silicon glass ceramics, and the magnetic glass ceramics can be used as magnetic functional materials in various industrial fields, turning waste into treasure, Provide a new way for the high-value utilization of such industrial solid waste

Method used

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  • Solid-waste-based nanocrystalline cluster magnetic glass ceramic and preparation method thereof
  • Solid-waste-based nanocrystalline cluster magnetic glass ceramic and preparation method thereof
  • Solid-waste-based nanocrystalline cluster magnetic glass ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A solid waste-based nanocrystalline cluster magnetic glass-ceramic is prepared by the method of high-temperature melting-spontaneous nucleation-heating crystallization, and the specific steps are as follows:

[0037] (1) Preparation of mixture: design B 2 o 3 -Fe 2 o 3 -SiO 2 It is a basic glass formula, in which the weight percentage of each component is: SiO 2 50%, Fe 2 o 3 25%, B 2 o3 12%, Al 2 o 3 5%, Na 2 O+K 2 O 5%, MgO+CaO 3%.

[0038] Using high-silicon molybdenum tailings as the main raw material (see Table 1 for its main components), with appropriate amount of quartz sand, ferric oxide, boron oxide, aluminum oxide, calcium oxide, soda ash, etc., according to the weight of each component in the above basic glass formula Calculate the percentage of glass frit, weigh the raw materials, and mix them evenly. Among them, glass frits with high silicon molybdenum tailings introduction (weight percentage) of 30%, 40%, 50%, 60%, and 70% were designed re...

Embodiment 2

[0051] A solid waste-based nanocrystalline cluster magnetic glass-ceramic is prepared by the method of high-temperature melting-spontaneous nucleation-heating crystallization, and the specific steps are as follows:

[0052] (1) Preparation of the mixture:

[0053] Design B 2 o 3 -Fe 2 o 3 -SiO 2 Glass formula: the weight percentage of each component is composed of: SiO 2 51%, Fe 2 o 3 22%, B 2 o 3 13%, Na 2 O+K 2 O 2%, Al 2 o 3 3%, MgO+CaO 9%.

[0054] Using the iron-rich Baiyun Obo tailings as the main raw material (see Table 3 for its main components), with appropriate amount of auxiliary raw materials such as quartz sand, soda ash, boric acid, etc., according to Design B 2 o 3 -Fe 2 o 3 -SiO 2 The glass formula is used for weighing and mixing evenly.

[0055] Table 3 Main chemical components of Baiyan Obo iron tailings (wt.%)

[0056] SiO 2

Al 2 o 3

CaO MgO Fe 2 o 3

Na 2 O+K 2 o

Baiyun Obo Iron Tailings...

Embodiment 3

[0061] A solid waste-based nanocrystalline cluster magnetic glass-ceramic is prepared by the method of high-temperature melting-spontaneous nucleation-lower temperature crystallization, and the specific steps are as follows:

[0062] (1) Preparation of the mixture:

[0063] Design B 2 o 3 -Fe 2 o 3 -SiO 2 It is a basic glass formula, in which the weight percentage of each component is: SiO 2 50.6%, Fe 2 o 3 30%, B 2 o 3 15.7%, MgO+CaO 0.3%, Na 2 O+K 2 O 0.4%, Al 2 o 3 3%.

[0064] Using waste borate glassware as the main raw material (see Table 4 for its main components), with appropriate amount of auxiliary materials such as quartz sand and ferric oxide, design B 2 o 3 -Fe 2 o 3 -SiO 2 It is a glass formula, weigh the raw materials, and mix them evenly.

[0065] Table 4 The main chemical components of waste borate glassware (wt.%)

[0066] SiO 2

B 2 o 3

CaO MgO Na 2 O+K 2 o

waste borate glassware 60～80 15～30 1...

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Abstract

The invention provides a solid-waste-based nanocrystalline cluster magnetic glass ceramic and a preparation method thereof; the magnetic glass ceramic belongs to a B2O3-Fe2O3-SiO2 system, and is prepared by taking high-silicon, iron-rich or boron-containing industrial solid waste as a main raw material through a high-temperature melting-self-nucleation crystallization method; and the preparation process is simple, and the cost is low. The base glass formula comprises 45-60% of SiO2, 2-30% of B2O3, 15-30% of Fe2O3, 3-15% of Al2O3, less than or equal to 9% of CaO + MgO and less than or equal to 6% of Na2O + K2O. The solid-waste-based nanocrystalline cluster magnetic glass ceramic belongs to ferromagnetic glass ceramic, the magnetic phase magnetite is nanocrystalline and is mainly uniformly dispersed in the glass phase in a cluster structure form, has the structural characteristics of the glass ceramic and a magnetic function, the crystalline phase purity is high, the saturation magnetization Ms reaches 20 emu / g, the coercive force Hc reaches 57Oe, and the magnetic glass ceramic can be made into magnetic glass fiber, the electromagnetic shielding / wave-absorbing material and the magnetic glass ceramic powder, and is applied to the fields of electrical insulation, information technology, wastewater treatment and the like.

Description

technical field [0001] The invention relates to a solid waste-based nanocrystalline cluster magnetic glass ceramic and a preparation method thereof, in particular to a kind of high-silicon / iron-rich / boron-containing industrial solid waste as the main raw material, which adopts high-temperature melting, spontaneous nucleation and crystallization A chemically synthesized magnetic glass-ceramic with a nanocrystalline cluster structure and a preparation method thereof. Background technique [0002] Glass-ceramic is a multi-phase solid material composed of crystal phase and glass phase obtained by controlled crystallization of basic glass. According to different components, it can be divided into silicate glass ceramics, aluminosilicate glass ceramics, and borate glass ceramics. , phosphate glass ceramics, etc. Through composition design and heat treatment process control, the glass ceramics of different systems have adjustable thermal expansion coefficients, good insulation, low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02C03B1/00C03B5/16C03B19/02C03B32/02
CPCC03C10/0081C03B1/00C03B5/16C03B19/02C03B32/02Y02P40/50
Inventor 邓磊波张桢张明星赵鸣王硕李浩胡锋
Owner INNER MONGOLIA UNIV OF SCI & TECH
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