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Method for producing micro crystal glass by combined using of yellow phosphorus slag and exhaust

A technology of glass-ceramic and yellow phosphorus, which is applied in the field of building material manufacturing, can solve the problems of incompleteness and inability to industrialize production, and achieve the effect of energy saving and simple process

Inactive Publication Date: 2007-09-19
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thereby these two technical schemes all are incomplete, can not industrialized production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for comprehensively utilizing yellow phosphorus slag and tail gas to produce glass-ceramics comprises the following steps:

[0016] components

SiO 2

Al 2 o 3

CaO

content

37.79

4.63

47.85

[0017] components

SiO 2

Al 2 o 3

CaO

K 2 O+Na 2 o

content

52.94

6.46

28.71

4.44

[0018] (2) The nozzles arranged in an orderly manner on the roof of the melting furnace mix the washed, purified and dried yellow phosphorus tail gas with oxygen and burn it to maintain the temperature in the furnace at 1450°C;

[0019] (3) Control the temperature in the furnace to 1450°C and keep it warm for 2 hours to melt, homogenize and clarify all materials;

[0020] (4) Direct calendering, heat preservation at 780-800°C for 2 hours, nucleation treatment; then heat up, heat preservation at 900-950°C for 2 hours, crystallization treatment, annealing, cutting an...

Embodiment 2

4.41

[0024] (2) The nozzles arranged in an orderly manner on the roof of the melting furnace mix the washed, purified and dried yellow phosphorus tail gas with oxygen and burn it to maintain the temperature in the furnace at 1450°C;

[0025] (3) Control the temperature in the furnace to 1450°C and keep it warm for 2 hours to melt, homogenize and clarify all materials;

[0026] (4) Injection molding, heat preservation at 780-800°C for 2 hours, nucleation treatment; then heat up, heat preservation at 900-950°C for 2 hours, crystallization treatment, annealing, cutting and grinding to obtain the finished product.

Embodiment 3

4.20

[0030] (2) The nozzles arranged in an orderly manner on the roof of the melting furnace mix the washed, purified and dried yellow phosphorus tail gas with oxygen and burn it to maintain the temperature in the furnace at 1450°C;

[0031] (3) Control the temperature in the furnace to 1450°C and keep it warm for 2 hours to melt, homogenize and clarify all materials;

[0032] (4) After water quenching, drying and screening, sintering and molding, heat preservation at 780-800 °C for 2 hours, and nucleation treatment; then heat up, heat preservation at 900-950 °C for 2 hours, crystallization treatment, annealing, cutting and grinding Then get the finished product.

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Abstract

The invention discloses a method for a multipurpose utilization of yellow phosphorus clinker and offgas to produce glass-ceramic which belongs to the manufacture field of building materials. The invention is with a simple technics and a low cost, stable, and can do an industry production including following steps: melting the yellow phosphorus into slag in the melting furnace in a temperature of 1450-1500 DEG C, meanwhile, doing a speedy bath analysis; making the material composition accord with SiO2 50-60, Al2O3 6-7, CaO 22-30, K2O+Na2O 3-9, than adding the material containing Si, Al, Na into the melting furnace; burning the clean and dried yellow phosphorus offgas by the arranged ejecting mouths on the top melting furnace after mixing with the oxygen and maintaining the temperature of 1450 DEG C in the furnace; controlling the temperature of 1450 DEG C in the furnace and keeping warm for 2 hours to make all of the material mold after melting, equalization and fining, then coring and crystallizing, getting finished products after anneal and cutting-abrading.

Description

technical field [0001] The invention belongs to the field of building material manufacture, and in particular relates to a method for producing glass-ceramics by using yellow phosphorus slag and tail gas. Background technique [0002] Glass-ceramic, also known as glass-ceramic, was successfully developed for the first time in the late 1950s. It is a basic glass with a specific composition added with a nucleating agent (individually optional), and is obtained by controlling the crystallization behavior. The produced material is a material with uniform distribution of microcrystals and glass phases, that is, a large number (about 95-98% by volume) of randomly oriented tiny ceramic crystals (usually less than 10 μm) are uniformly distributed in the amorphous glass. Glass-ceramics not only has high density and low water absorption, but also has a low coefficient of thermal expansion and high mechanical strength, and can be widely used in construction, biology, chemical industry,...

Claims

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Application Information

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IPC IPC(8): C03C10/06C03B32/02
CPCC03C10/00C03C3/087
Inventor 何浩明王绍东解田杨光明
Owner WENGFU (GRP) CO LTD
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