CN103030289B - A kind of take kaolinite as devitrified glass of major ingredient and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of take kaolinite as the devitrified glass of major ingredient, it is made up of the raw material of following weight parts: kaolinite 53-60, coal gangue 15-20, potassium felspar sand 12-15, Calcium Fluoride (Fluorspan) 7-10, aluminum oxide 6-8, magnesium fluoride 5-7, calcium carbonate 5-7, zinc oxide 5-7, calcium oxide 3.5-4, Lithium Oxide 98min 2.4-3, boron oxide 2.5-3, charcoal 2-2.6, plant ash 2-3.5, tree ash 2.5-3, sodium carbonate 3-4, sodium oxide 1-2, magnesium oxide 1-3, potassium oxide 2.1-3, quartz sand 0.8-1, titanium dioxide 0.6-0.8, antimonous oxide 0.5-0.7, cerium dioxide 0.1-0.16.The devitrified glass planeness that the present invention produces is good, physical strength is high, hardness is large, have good heat impedance, flexural strength, erosion resistance and wear resistance, product can be made into all kinds of tubing, sheet material, can be widely used in architectural abrasion-proof corrosion-proof corrosion material, building and ornament materials.

Description

A kind of take kaolinite as devitrified glass of major ingredient and preparation method thereof

Technical field

The present invention relates generally to a kind of devitrified glass and preparation method thereof, and particularly relating to a kind of take kaolinite as devitrified glass of major ingredient and preparation method thereof.

Background technology

Devitrified glass, also known as glass-ceramic, it is a kind of type material that comprehensive glass and ceramic technology grow up, it is the equally distributed material of microcrystal and glassy phase, its physicochemical property has concentrated glass, triple advantages of pottery and lithotome, as physical strength is high, corrosion-resistant, heat-resisting, wear-resisting, antioxidant property is good, electrical property is excellent, the coefficient of expansion is adjustable, Heat stability is good etc., and be better than lithotome and pottery, can be used for building curtain wall and indoor high-grade decoration, also can do structured material mechanically, electronics, insulating material on electrician, the baseboard material of large-scale integrated circuit, the heat-resisting serial vessel of microwave oven, chemical industry and impregnating material and mine high-abrasive material etc., it is the type material of the 21 century with development prospect.Thus the fields such as electronics, chemical industry, military affairs, space flight, nuclear industry and building are widely used in.Because devitrified glass can use ore, industrial tailings, metallurgical slag, flyash, coal gangue etc. as main production raw material, and produced in process pollution-free, the no radioactivity pollute of product own, therefore be otherwise known as environmentfriendly products or green material, often there is a large amount of manufacturability pore in the top layer of the devitrified glass of traditional mode of production and internal layer thereof, and the performance such as folding strength and water tolerance is not strong, limits the Application Areas of devitrified glass.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides devitrified glass of the fine and close pore-free of a kind of any surface finish, water-fast, High anti bending strength and preparation method thereof.

The present invention is achieved by the following technical solutions:

Take kaolinite as a devitrified glass for major ingredient, it is made up of the raw material of following weight parts:

Kaolinite 53-60, coal gangue 15-20, potassium felspar sand 12-15, Calcium Fluoride (Fluorspan) 7-10, aluminum oxide 6-8, magnesium fluoride 5-7, calcium carbonate 5-7, zinc oxide 5-7, calcium oxide 3.5-4, Lithium Oxide 98min 2.4-3, boron oxide 2.5-3, charcoal 2-2.6, plant ash 2-3.5, tree ash 2.5-3, sodium carbonate 3-4, sodium oxide 1-2, magnesium oxide 1-3, potassium oxide 2.1-3, quartz sand 0.8-1, titanium dioxide 0.6-0.8, antimonous oxide 0.5-0.7, cerium dioxide 0.1-0.16.

Take kaolinite as a preparation method for the devitrified glass of major ingredient, comprise the following steps:

(1) raw material of above-mentioned weight part is mixed to join in glass-melting furnace, under the high temperature of 1550-1600 DEG C, is melt into uniform vitreum;

(2) directly dropped in water by above-mentioned vitreum, cold quenching becomes glass particle, is then ground into 20-25 μm of powder, add the modified glass body powder of its weight 25-30%, mix oven dry, and be laid on the horizontal plane with the refractory materials of tree ash sealing coat, laid thickness is 20-30mm;

The preparation method of described modified glass body powder is: be the plant ash of 10-20 by weight part, the weight part quartz sand that is 50-60, the weight part attapulgite that is 15-20, weight part be the ground silica of 30-32, mixing adds in glass-melting furnace, under being heated to the high temperature of 1550-1600 DEG C, melting 2-3 hour, 1.5-2 hour is clarified at being down to 1400-1450 DEG C again, obtained glass metal, obtains glass cullet body in cold water of then quenching, then grinds to form 3-5 μm of modified glass body powder;

(3) above-mentioned laid good glass particle is placed in resistance furnace together with refractory materials, temperature schedule: normal temperature is heated to 300-360 DEG C, temperature rise rate 6 DEG C/min; 300-360 DEG C is heated to 780-880 DEG C, temperature rise rate 6 DEG C/min; 1-2h is incubated at 880 DEG C; Then 1380 DEG C are heated to from 880 DEG C, temperature rise rate 6 DEG C/min; At 1380 DEG C, be incubated 2-3h, complete coring and crystallization process;

(4) anneal: the glass after above-mentioned crystallization is carried out anneal with the annealing cooling rate of 3-5 DEG C/min, when temperature is down in 550-620 DEG C, keep constant temperature 30-40 minute, and then 6-8 DEG C/min ramp is to 820-870 DEG C, and then continue cooling with 5-7 DEG C/min speed, when temperature is down in 280-350 DEG C, then naturally cool to room temperature;

(5) size as requested cuts into plate, grinding and polishing, deburring.

Advantage of the present invention is:

The devitrified glass planeness that the present invention produces is good, physical strength is high, hardness is large, have good heat impedance, flexural strength, erosion resistance and wear resistance, product can be made into all kinds of tubing, sheet material, can be widely used in architectural abrasion-proof corrosion-proof corrosion material, building and ornament materials, use for laboratory heating appliances, high-temperature heat exchanger, for silica glass, window pyrometer, radome etc.

Embodiment

Embodiment 1

Take kaolinite as a devitrified glass for major ingredient, it is made up of the raw material of following weight parts (kilogram):

Kaolinite 60, coal gangue 20, potassium felspar sand 15, Calcium Fluoride (Fluorspan) 10, aluminum oxide 8, magnesium fluoride 5, calcium carbonate 7, zinc oxide 7, calcium oxide 3.5, Lithium Oxide 98min 2.4, boron oxide 2.5, charcoal 2.6, plant ash 3.5, tree ash 2.5, sodium carbonate 4, sodium oxide 2, magnesium oxide 3, potassium oxide 2.1, quartz sand 0.8, titanium dioxide 0.8, antimonous oxide 0.5, cerium dioxide 0.16.

Take kaolinite as a preparation method for the devitrified glass of major ingredient, comprise the following steps:

(1) raw material of above-mentioned weight part is mixed to join in glass-melting furnace, under the high temperature of 1600 DEG C, is melt into uniform vitreum;

(2) directly dropped in water by above-mentioned vitreum, cold quenching becomes glass particle, is then ground into 25 μm of powder, add the modified glass body powder of its weight 25%, mix oven dry, and be laid on the horizontal plane with the refractory materials of tree ash sealing coat, laid thickness is 30mm;

The preparation method of described modified glass body powder is: be the plant ash of 20 by weight part, the weight part quartz sand that is 60, the weight part attapulgite that is 20, weight part be the ground silica of 32, mixing adds in glass-melting furnace, under being heated to the high temperature of 1600 DEG C, melting 3 hours, clarify 1.5 hours at being down to 1450 DEG C again, obtained glass metal, obtains glass cullet body in cold water of then quenching, then grinds to form 5 μm of modified glass body powder;

(3) above-mentioned laid good glass particle is placed in resistance furnace together with refractory materials, temperature schedule: normal temperature is heated to 360 DEG C, temperature rise rate 6 DEG C/min; 360 DEG C are heated to 880 DEG C, temperature rise rate 6 DEG C/min; 2h is incubated at 880 DEG C; Then 1380 DEG C are heated to from 880 DEG C, temperature rise rate 6 DEG C/min; At 1380 DEG C, be incubated 3h, complete coring and crystallization process;

(4) anneal: the glass after above-mentioned crystallization is carried out anneal with the annealing cooling rate of 5 DEG C/min, when temperature is down in 620 DEG C, keep constant temperature 40 minutes, and then 8 DEG C/min ramp is to 870 DEG C, and then continue cooling with 6 DEG C/min speed, when temperature is down in 300 DEG C, then naturally cool to room temperature;

(5) size as requested cuts into plate, grinding and polishing, deburring.

Performance test:

Folding strength is tested: adopt MC009-wds10M type electronic universal material property testing machine to utilize the folding strength of three-point bending method working sample, get 6 bar samples (9mm × 7mm × 85mm) to test, calculate folding strength, finally average.

Microsclerometry: by the hardness of HXD-1000 digital micro-analysis hardness-testing device working sample, three points surveyed by each sample, represent its microhardness with mean value, survey three samples altogether, finally calculate the mean value of the microhardness of three samples.

Water resistance is tested: adopt powder to soak weight-loss method and carries out measuring (DTN12116), by sample comminution, get 40 now, microcrystalline glass powder 2 grams on 60 orders, in 50ml volumetric flask, add water to scale, at 98 ± 0.5 DEG C of temperature, be incubated 60 minutes, measure its 100cm ²rate of weight loss (mg/100cm ²).

Test result:

1, sample appearance quality: surface compact, the defects such as pore-free, surface of polished light.

2, mechanical property: average folding strength 89.5MPa, average microhardness 893.5kgf/mm ².

3, hydrolysis grade: 1 grade, rate of weight loss is: 0.285mg/100cm ².

Claims (2)

1. one kind take kaolinite as the devitrified glass of major ingredient, it is characterized in that it is made up of the raw material of following weight parts: kaolinite 53-60, coal gangue 15-20, potassium felspar sand 12-15, Calcium Fluoride (Fluorspan) 7-10, aluminum oxide 6-8, magnesium fluoride 5-7, calcium carbonate 5-7, zinc oxide 5-7, calcium oxide 3.5-4, Lithium Oxide 98min 2.4-3, boron oxide 2.5-3, charcoal 2-2.6, plant ash 2-3.5, tree ash 2.5-3, sodium carbonate 3-4, sodium oxide 1-2, magnesium oxide 1-3, potassium oxide 2.1-3, quartz sand 0.8-1, titanium dioxide 0.6-0.8, antimonous oxide 0.5-0.7, cerium dioxide 0.1-0.16.

2. be a preparation method for the devitrified glass of major ingredient as claimed in claim 1 with kaolinite, it is characterized in that comprising the following steps:

(1) raw material of above-mentioned weight part is mixed to join in glass-melting furnace, under the high temperature of 1550-1600 DEG C, is melt into uniform vitreum;

(2) directly dropped in water by above-mentioned vitreum, cold quenching becomes glass particle, is then ground into 20-25 μm of powder, add the modified glass body powder of its weight 25-30%, mix oven dry, and be laid on the horizontal plane with the refractory materials of tree ash sealing coat, laid thickness is 20-30mm;

The preparation method of described modified glass body powder is: be the plant ash of 10-20 by weight part, the weight part quartz sand that is 50-60, the weight part attapulgite that is 15-20, weight part be the ground silica of 30-32, mixing adds in glass-melting furnace, under being heated to the high temperature of 1550-1600 DEG C, melting 2-3 hour, 1.5-2 hour is clarified at being down to 1400-1450 DEG C again, obtained glass metal, obtains glass cullet body in cold water of then quenching, then grinds to form 3-5 μm of modified glass body powder;

(3) above-mentioned laid good glass particle is placed in resistance furnace together with refractory materials, temperature schedule: normal temperature is heated to 300-360 DEG C, temperature rise rate 6 DEG C/min; 300-360 DEG C is heated to 780-880 DEG C, temperature rise rate 6 DEG C/min; 1-2h is incubated at 880 DEG C; Then 1380 DEG C are heated to from 880 DEG C, temperature rise rate 6 DEG C/min; At 1380 DEG C, be incubated 2-3h, complete coring and crystallization process;

(4) anneal: the glass after above-mentioned crystallization is carried out anneal with the annealing cooling rate of 3-5 DEG C/min, when temperature is down in 550-620 DEG C, keep constant temperature 30-40 minute, and then 6-8 DEG C/min ramp is to 820-870 DEG C, and then continue cooling with 5-7 DEG C/min speed, when temperature is down in 280-350 DEG C, then naturally cool to room temperature;

(5) size as requested cuts into plate, grinding and polishing, deburring.