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Preparation method of blast furnace slag-based microcrystal luminescent glass

A luminescent glass and slag-based technology, which is applied in the field of direct utilization of luminescent materials and metallurgical solid waste, can solve the problems of difficult to meet the color rendering index of LED lighting, many preparation processes, and heavy, etc., to achieve efficient energy utilization and simple production process Effect

Inactive Publication Date: 2017-08-08
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, first, the existing crystalline red light-emitting materials are difficult to meet the LED lighting color rendering index (CRI, R a >80) and color temperature (CCT<4500K) requirements; 2. When used with crystalline light-emitting materials in LED lighting applications, there are many preparation processes and serious energy loss; 3. The packaging material epoxy resin packaging has low thermal conductivity, Poor chemical stability, not moisture-proof and easy to age and turn yellow, etc.
However, blast furnace slag / rare earth tailings are still in the application stage of large quantities and low economic efficiency
All of these have caused a heavy burden on the environment in which human beings can survive

Method used

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  • Preparation method of blast furnace slag-based microcrystal luminescent glass
  • Preparation method of blast furnace slag-based microcrystal luminescent glass
  • Preparation method of blast furnace slag-based microcrystal luminescent glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 500g blast furnace slag and 10g H 3 BO 3, ground into powder, placed in a graphite crucible, heated to 1360°C in a box-type resistance furnace, kept for 2 hours, sampled in a hot state, in a liquid state, quenched in cold water, cooled to room temperature, dried at 60°C, and ground into CMAS Glass powder (A powder) is set aside.

Embodiment 2

[0025] Weigh 500g blast furnace slag and 10g NaNO 3 , ground into powder, placed in a graphite crucible, heated to 1320°C in a box-type resistance furnace, kept for 2 hours, sampled in a hot state, in liquid state, quenched in 10% NaCl solution, cooled to room temperature, dried at 60°C, Grind it into CMAS glass powder (B powder) for later use.

[0026] 2. Preparation of CMASR microcrystalline luminescent glass

Embodiment 3

[0028] Weigh 3g CMAS glass powder (A powder), doped with 1mol% Eu 2 o 3 After grinding, put it in a graphite crucible, heat it in a resistance furnace at a rate of 10 °C / min to 600 °C, keep it for 1 hour, then heat it at a rate of 5 °C / min to 1200 °C, keep it at a rate of 6 hours, and then cool it to room temperature with the furnace. Sampling and grinding to obtain CMASE red-emitting microcrystalline luminescent glass powder.

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Abstract

The invention discloses a preparation method of blast furnace slag-based microcrystal luminescent glass, and belongs to the fields of luminescent materials and direct utilization of metallurgy solid waste. The preparation method comprises the following steps: adding a proper amount of cosolvent into blast furnace slag serving as a main raw material; preserving heat at 1,300 to 1,400 DEG C for 2 hours; performing quick chilling to form glass; adding a proper amount of nucleating agent, doping ions, and compensating charges for nucleating; preserving heat at 500 to 1,000 DEG C for 1 to 24 hours to grow a crystal nucleus in order to obtain the ideal CMASR microcrystal luminescent glass. By adopting the preparation method, the blast furnace slag is taken as the main raw material for preparing red-light and white CMASR microcrystal luminescent glass, so that technical support is provided for popularization of LED (Light-Emitting Diode) illumination; meanwhile, a novel path is provided for high-additional-value utilization of the blast furnace slag.

Description

technical field [0001] The invention belongs to the field of direct utilization of luminescent materials and metallurgical solid waste, and uses blast furnace slag to directly design a luminescent micro-region structure and prepare a microcrystalline luminescent glass CMASR, providing technical support for the direct material application of blast furnace slag and the popularization of LED lighting. Background technique [0002] With the improvement of people's awareness of environmental protection, the high value-added utilization of complex silicates such as blast furnace slag and the efficient energy utilization such as LED lighting have become a hot issue that researchers have paid attention to. However, white LED light source lighting is still subject to LED light efficiency conversion rate and technical parameters (color temperature and color rendering index). That is, first, the existing crystalline red light-emitting materials are difficult to meet the LED lighting co...

Claims

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Application Information

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IPC IPC(8): C03C10/06C03C4/12C03C6/10
CPCC03C10/0063C03C4/12C03C10/0045
Inventor 曹发斌武军刘伟明王平朱建华申星梅武杏荣李辽沙位路红吴照金
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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