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Rear-earth-rich, niobium-rich and cand-rich rear sorted tail-ore microcrystal glass and mfg. method

A technology for dilute separation of tailings and glass-ceramics, applied in the field of comprehensive utilization of industrial waste, can solve the problems of poor mechanical properties, low crystallization rate, and high production costs, and achieve improved mechanical properties, excellent performance, and reduced costs. Effect

Inactive Publication Date: 2007-08-29
内蒙古科韵环保材料股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the tailings of a few mines have been recycled and made into glass-ceramics in recent years, additives and nucleating agents need to be added, and there are problems such as high production costs, low crystallization rate, and poor mechanical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Ingredients: The ratio of raw materials by weight is: 30% of rare tailings, 50% of quartz sand, 10% of limestone, 5% of feldspar, TiO 2 3.7%, ZnO1.3%.

[0020] 2. Mixing: Mix the prepared raw materials with a ball mill, and the mixing time is 60 minutes.

[0021] 3. Melting: Melt the mixed material in a high-temperature furnace, the melting temperature is 1450°C, and the holding time is 120 minutes.

[0022] 4. Pouring: pour the glass melt into the preheated mold (the mold preheating temperature is 900°C), then demould the formed glass, and immediately put it into a 700°C furnace for annealing, and the holding time is 120min. Or quench the water, then sieve the glass particles, put them into the mold and compact them.

[0023] Crystallization treatment: heat the molded glass at 10°C / min to 850°C±30°C for 120min, then raise the temperature at 5°C / min to 950°C±30°C for 120min, then anneal to 500°C and cool naturally.

[0024] The chemical composition of the dilute t...

Embodiment 2

[0026] 1. Ingredients: The ratio of raw materials by weight is: 30% of rare tailings, 50% of quartz sand, 10% of limestone, 5% of feldspar, TiO 2 3.7%, ZnO1.3%.

[0027] 2. Mixing: Mix the prepared raw materials with a ball mill, and the mixing time is 60 minutes.

[0028] 3. Melting: Melt the mixed material in a high-temperature furnace, the melting temperature is 1450°C, and the holding time is 120 minutes.

[0029] 4. Pouring: pour the glass melt into the preheated mold (the mold preheating temperature is 900°C), then demould the formed glass, and immediately put it into a 700°C furnace for annealing, and the holding time is 120min. Or quench the water, then sieve the glass particles, put them into the mold and compact them.

[0030] 5. Crystallization treatment: Heat the molded glass at 10°C / min to 850°C±30°C and keep it for 120min, then raise the temperature at 5°C / min to 950°C±30°C and keep it for 120min, then anneal to 500°C and cool naturally.

[0031] The chemical ...

Embodiment 3

[0033] 1. Ingredients: Raw materials are proportioned by weight: 50% of dilute tailings, 35% of quartz sand, 5% of limestone, 5% of feldspar, and 5% of alumina.

[0034] 2. Mixing: Mix the prepared raw materials with a ball mill, and the mixing time is 100 minutes.

[0035] 3. Melting: Melt the mixed material in a high-temperature furnace, the melting temperature is 1430°C, and the holding time is 120 minutes.

[0036] 4. Pouring: pour the glass melt into the preheated mold (the mold preheating temperature is 900°C), then demould the formed glass, and immediately put it into a 700°C furnace for annealing, and the holding time is 120min. Or quench the water, then sieve the glass particles, put them into the mold and compact them.

[0037]5. Crystallization treatment: Heat the molded glass at 10°C / min to 800°C±30°C and keep it for 120 minutes, then raise the temperature at 5°C / min to 900°C±30°C and keep it for 120 minutes, then anneal to 500°C and cool naturally.

[0038] The ...

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PUM

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Abstract

The invention relates to a rare earth enriched, niobium, fluorite rare selecting tail mine micro-crystal glass and manufacture method. The feature is that the manufacture raw material of the glass is rare selecting tail mine and quartz sand. The chemical constituent includes SiO2 30-70wt%, CaO 5-20wt%, Al2O3 5-15wt%, CaF 3-15wt%, ReO 3-15wt%, Nb2O5 0-5wt%, and TiO2 0-10wt%. The advantages of the invention are that it has more refined micro-crystal, and the fracture toughness is obviously improved.

Description

Technical field: [0001] The present invention relates to a rare-earth, niobium, fluorite-rich rare-earth tailings glass-ceramic and its manufacturing method. Specifically, it uses rare-earth tailings as a raw material to prepare the glass-ceramic and its manufacturing method, which belongs to industrial waste Comprehensive utilization of things. Background technique: [0002] The abandonment of tailings not only occupies a large amount of land, but also causes serious pollution to surrounding water resources and soil. In recent years, CaO-Al 2 o 3 -SiO 2 The research on system glass-ceramics is increasing day by day. The main crystal phase of CaO-Al203-SiO2 system glass-ceramics is mostly β-wollastonite. The system glass-ceramics manufactured by sintering method has high strength and good acid and alkali resistance. and other excellent performance. Although the tailings of a few mines have been recycled and made into glass-ceramics in recent years, additives and nucleat...

Claims

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Application Information

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IPC IPC(8): C03C10/14C03B32/02
CPCC03C3/112C03C3/062C03C10/00
Inventor 李保卫高占勇任慧平赵增武张邦文张雪峰
Owner 内蒙古科韵环保材料股份公司
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