Slag glass ceramic pipe and preparation method thereof

A technology of glass-ceramics and glass tubes, applied in glass production, etc., can solve the problems of reduced mechanical strength and anti-wear performance, high scrap rate, prone to pores and shrinkage cavities, etc., to achieve strong crystallization ability and not easy to deform Effect

Active Publication Date: 2011-09-07
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The gravity casting method is relatively simple, but gravity casting pipes have many disadvantages: ① low production efficiency and cumbersome production process; ②...

Method used

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  • Slag glass ceramic pipe and preparation method thereof
  • Slag glass ceramic pipe and preparation method thereof
  • Slag glass ceramic pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: slag glass-ceramics pipe and its preparation method:

[0049] (1) Raw material ratio: 27.3% fly ash, 45.1% slag after beneficiation of Baiyunebo tailings, 18.2% quartz sand, 3.1% dolomite, 2.6% sodium carbonate, and 3.7% borax.

[0050] (2) Mixing: Put the weighed raw materials into the ball mill mixer and mix for 70 minutes;

[0051] (3) Melting: Add the mixed raw materials into the glass melting furnace for melting, and the melting temperature is 1350-1450°C;

[0052] (4) Centrifugal casting molding: Preheat the mold to 400°C, use a ladle to pick up the glass liquid (the temperature of the glass liquid is 1150°C), pour it into a high-speed rotating mold, and centrifugally form it at 650 rpm. Release the mold when the mold temperature drops to 730°C.

[0053] (5) Annealing, nucleation and crystallization treatment: anneal the formed glass tube at 620°C for 2 hours, nucleate at 680°C for 2 hours, crystallize at 850°C for 4 hours, and finally the glass tu...

Embodiment 2

[0059] Embodiment 2: slag glass-ceramic pipe material and its preparation method

[0060] (1) Raw material ratio: 25.6% fly ash, 24.4% blast furnace slag, 21.1% slag after beneficiation of Baiyun Obo tailings, 18.9% quartz sand, 3.5% feldspar, 2.4% sodium carbonate, 4.1% borax;

[0061] (2) Mixing: Put the weighed raw materials into the ball mill mixer and mix for 60 minutes;

[0062] (3) Melting: Add the mixed raw materials into the glass melting furnace for melting, and the melting temperature is 1350-1450°C;

[0063] (4) Centrifugal casting molding: Preheat the mold to 450°C, take the molten glass with a ladle (the temperature of the molten glass is 1200°C), pour it into a high-speed rotating mold, and centrifugally form it at a speed of 700 rpm. Release the mold when the mold temperature drops to 750°C;

[0064] (5) Annealing, nucleation and crystallization treatment: anneal the formed glass tube at 630°C for 4 hours, nucleate at 730°C for 3 hours, crystallize at 870°C f...

Embodiment 3

[0070] Embodiment 3: Slag glass-ceramic pipe material and its preparation method

[0071] (1) Raw material ratio: 28.8% fly ash, 21.6% steel slag, 20.7% slag after beneficiation of Baiyun Obo tailings, 18.3% quartz sand, 3.2% albite feldspar, 2.1% sodium carbonate, 5.3% borax;

[0072] (2) Mixing: Put the weighed raw materials into the ball mill mixer and mix for 60 minutes;

[0073] (3) Melting: Add the mixed raw materials into the glass melting furnace for melting, and the melting temperature is 1350-1450°C;

[0074] (4) Centrifugal casting molding: Preheat the mold to 500°C, take the molten glass with a ladle (the temperature of the molten glass is 1250°C), pour it into a high-speed rotating mold, and centrifugally form it at a speed of 750 rpm. Demoulding when the mold temperature drops to 730°C;

[0075] (5) Annealing, nucleation, and crystallization treatment: Anneal the formed glass tube at 620°C for 5 hours, nucleate at 800°C for 3 hours, crystallize at 900°C for 2 h...

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Abstract

The invention relates to a glass ceramic pipe and a preparation method thereof. The glass ceramic pipe is prepared from the following raw materials in percentage by weight: 20 to 40 percent of coal ash, 20 to 50 percent of slag obtained by separating Baiyunebo tailings again, 0 to 40 percent of blast furnace slag or steel slag, 15 to 30 percent of quartz sand, 2 to 5 percent of sodium carbonate, 2 to 7 percent of borax, 0 to 5 percent of dolomite or lime stone, and 0 to 6 percent of albite or potash feldspar; and the preparation method comprises the following steps of: measuring the raw materials according to the ratio and then adding into a ball-milling mixing machine and mixing uniformly and melting the mixture at the temperature of between 1,350 and 1,450 DEG C; and performing centrifugal casting and molding; annealing, coring and crystallizing the molded pipe, and reducing the temperature at a speed of 1 to 5 DEG/min to the temperature of less than 100 DEG C and then discharging. The product has good performance, the abrasive resistance of the product is three times higher than that of a glass-ceramic tube, the weight of the product is only one third that of a glass-ceramic composite tube, the service life of the product is 3 to 5 times that of the glass-ceramic composite tube, and the cost performance of the product is high. The utilization rate of industrial waste residue in the raw materials is more than and equal to 70 percent, and the pipe is energy-saving and environment-friendly, has low production cost, is suitable for large-scale industrial production and has a wide application range.

Description

[0001] technical field [0002] The invention relates to a glass-ceramic pipe material, in particular to a slag glass-ceramic pipe material prepared by centrifugal casting with industrial waste slag as the main raw material by adopting glass melting technology and a preparation method thereof. Background technique [0003] With the rapid development of industry, more industrial waste residues are produced, such as blast furnace slag, steel slag, tailings, fly ash, red mud, etc., which are large in quantity and wide in scope, and have not been well utilized. At present, except for a small part of waste residues used as roadbeds and cement-making in China, most of them are stacked in the open air, which not only occupies the land, but also easily causes dust pollution, mudslides, river silting and other hazards. The phosphorus, fluorine, heavy metals and other harmful dissolved substances in waste residues It is easy to pollute water bodies and endanger the environment. The m...

Claims

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Application Information

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IPC IPC(8): C03C10/10C03B32/02
CPCY02P40/57
Inventor 李保卫张雪峰李超李小卫贾晓林
Owner INNER MONGOLIA UNIV OF SCI & TECH
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