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Microcrystalline glass prepared from oil forming shale ash and method thereof

A technology of glass-ceramics and oil shale, applied in the field of building materials, can solve problems such as large color difference, no industrial test, and single color

Inactive Publication Date: 2010-01-20
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of cost reasons, architectural glass-ceramics are mostly made of industrial waste. However, except for the glass-ceramic plates produced by blast furnace slag and copper tailings, which have been used in the construction field, others such as iron tailings, tungsten tailings, kaolin tailings and The use of fly ash, etc., in the production of architectural glass-ceramics is still limited to laboratory research, mainly because the color is single (mostly black), and there is a large color difference in mass production, and even tiny pores, seesaws and bursts, etc. Defects, single function at the same time, especially no industrial test, so the popularization and application are limited

Method used

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  • Microcrystalline glass prepared from oil forming shale ash and method thereof
  • Microcrystalline glass prepared from oil forming shale ash and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Ingredients: Raw materials by weight: kerogen shale ash 75%, quicklime 11%, magnesium oxide 1%, sodium carbonate 10%, fluorite 2%, chromium oxide 1%;

[0020] 2. High-temperature melting: After mixing the weighed raw materials evenly, put them into a corundum crucible and put them into a silicon-molybdenum rod resistance furnace, and melt at 1250°C for 90 minutes;

[0021] 3. Water quenching: quench the glass melt in tap water into glass particles of 0.074-0.25mm, and dry them in a drying oven;

[0022] 4. Pulverization: ball mill the water-quenched glass particles into glass powder with a particle size of less than 0.074mm;

[0023] 5. Molding: Put the glass powder into the mold and press it under the pressure of 15MPa;

[0024] 6. High-temperature crystallization: Put the pressed glass powder into a silicon-molybdenum rod resistance furnace, raise the temperature to 850°C at a heating rate of 4°C / min, sinter at a constant temperature for 60 minutes, and then raise...

Embodiment 2

[0027] 1. Ingredients: raw materials by weight: 75% kerogen shale ash, 12% quicklime, 3% magnesium oxide, 6% sodium carbonate, 2.5% fluorite, 1.5% chromium oxide;

[0028] 2. High-temperature melting: weigh and mix the raw materials, put them into a corundum crucible, and melt in a silicon-molybdenum rod resistance furnace at 1350°C for 100 minutes;

[0029] 3. Water quenching: Use tap water to quench the glass melt into glass particles of 0.074-0.25mm, and dry in a drying oven;

[0030] 4. Crushing: Use a ball mill to grind the dried water-quenched glass particles into glass powder with a particle size of less than 0.074mm;

[0031] 5. Molding: Put the glass powder into the mold and press it under the pressure of 10MPa;

[0032] 6. High-temperature crystallization: Put the pressed glass powder into a silicon-molybdenum rod resistance furnace, raise the temperature to 840°C at a heating rate of 7°C / min, sinter at a constant temperature for 180min, and then raise the temperatu...

Embodiment 3

[0035] 1. Ingredients: Raw materials by weight: 77% kerogen shale ash, 9% quicklime, 3% magnesium oxide, 7% sodium carbonate, 3% fluorite, 1% chromium oxide;

[0036] 2. High-temperature melting: After weighing and mixing the raw materials, put them into a corundum crucible and put them into a silicon-aluminum rod resistance furnace, and melt at 1300°C for 120 minutes;

[0037] 3. Water quenching: Use tap water to water-quench the glass melt into 0.074-0.25mm glass particles, and dry them in a drying oven.

[0038] 4. Crushing: Use a ball mill to grind the dried water-quenched glass particles into glass powder with a particle size of less than 0.074mm;

[0039] 5. Molding: put the glass powder into the mold, press molding, the molding pressure is 12MPa;

[0040] 6. High-temperature crystallization: Put the pressed glass powder into a silicon-molybdenum rod resistance furnace, raise the temperature to 830°C at a heating rate of 8°C / min, sinter at a constant temperature for 120...

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Abstract

The invention discloses a making method of micro-crystal glass through bituminous shale, which comprises the following parts: 45-52% SiO2,15-18% Al2O3, 12-15% CaO, 2-5% MgO, 7-9% Fe2O3,4-6% Na2O, 1-1. 5% K2O,1-2% CaF2,1-2%Cr2O3 and trace quantity of residuals, wherein the apparent specific bulk density is 2. 4-2. 6g.cm-3 with HV microscopic hardness at 900-1250, hydroscopicity at 0. 01%, acid-resistance at 92-99%, alkali-resistance at 92-99% and anti-pressure strength at 400-550Mpa. The technique comprises the following steps: adopting kerabitumen ash, calcium lime, magnesium oxide, sodium carbonate, fluorite and chrome trioxide; allocating; fusing under high temperature; quenching; grinding; shaping; crystallizing under high temperature; fitting for building material and decorative material domains.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method for using oil shale ash to manufacture architectural glass-ceramics. Background technique [0002] Glass-ceramic has good mechanical and physical properties, its hardness is Mohs 6-9, and its compressive strength is 6.3T / cm 2 , the flexural strength is 487~1380kg / cm 2 , the impact strength is 2.5~3.8kg / cm 2 , the gloss is 70-120 degrees, the expansion coefficient is 61-77.5 (10 / ℃), the water absorption rate is less than 0.07%, and the wear loss is 0.49g / cm 2 , and has good acid and alkali resistance, so it is widely used in building materials, plates, pipes, and it can also be used in conjunction with other metal materials for high-strength bearings, high-pressure containers, high-pressure pipelines, fermentation tanks, and unreinforced buildings Floor slabs, hollow partition walls, engine cylinders, aerospace engines, spacecraft shells, rocket nozzles an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00C03C6/00C03B32/02
CPCC03C10/00C03C3/112
Inventor 薛向欣李勇冯宗玉
Owner NORTHEASTERN UNIV LIAONING