CN103030281A - Microcrystalline glass containing tree ash and preparation method thereof - Google Patents

Abstract

The invention discloses microcrystalline glass containing tree ash, which is formed by the following raw materials in parts by weight: 54-59 parts of silicon dioxide, 20-25 parts of coal gangue, 12-15 parts of bentonite, 10-15 parts of potassium feldspar, 7-9 parts of clay, 6-8 parts of quick lime, 3-5 parts of potassium oxide, 5-7.2 parts of aluminum oxide, 4-5 parts of magnesium oxide, 3-4 parts of zinc oxide, 3.5-4 parts of wood charcoal, 3-4 parts of gypsum, 3.2-5 parts of boron oxide, 3-5 parts of barium oxide, 2-3 parts of lithium oxide, 2-3 parts of table salt, 2.3-3 parts of tree ash, 2.3-3 parts of plant ash, 2-3 parts of sodium oxide, 0.15-0.2 part of potassium feldspar, 0.3-0.5 part of titanium dioxide, 0.5-0.6 part of antimonous oxide and 0.1-0.15 part of sodium tetraborate. The microcrystalline glass disclosed by the invention has the advantages of good flatness, high mechanical strength, great hardness, and good heat resistance, bending strength, corrosion resistance and wear resistance; and the product can be made into various types of pipes and sheet materials and can be widely applied to wear-resisting and corrosion-resisting materials and building decoration materials of buildings.

Description

A kind of devitrified glass that contains the trees ash and preparation method thereof

Technical field

The present invention relates generally to a kind of devitrified glass and preparation method thereof, relates in particular to a kind of devitrified glass that contains the trees ash and preparation method thereof.

Background technology

Devitrified glass, claim again 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 been concentrated glass, triple advantages of pottery and lithotome, high such as physical strength, corrosion-resistant, heat-resisting, wear-resisting, antioxidant property is good, electrical property is good, 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 the decoration, also can do structured material mechanically, electronics, insulating material on the 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. are the type materials with 21st century of development prospect.Thereby be widely used in the fields such as electronics, chemical industry, military affairs, space flight, nuclear industry and building.Because devitrified glass can use ore, industrial tailings, metallurgical slag, flyash, coal gangue etc. as main production raw material, and produced in the process pollution-free, the no radioactivity pollute of product own, environmentfriendly products or green material so be otherwise known as, often there are a large amount of manufacturability pores in the top layer of the devitrified glass of traditional mode of production and internal layer thereof, and the performances such as folding strength and water tolerance are not strong, limited the Application Areas of devitrified glass.

Summary of the invention

The object of the invention is exactly in order to remedy the defective of prior art, and 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 is provided.

The present invention is achieved by the following technical solutions:

A kind of devitrified glass that contains the trees ash, it is comprised of the raw material of following weight parts:

Silicon-dioxide 54-59, coal gangue 20-25, wilkinite 12-15, potassium felspar sand 10-15, clay 7-9, unslaked lime 6-8, potassium oxide 3-5, aluminum oxide 5-7.2, sodium oxide 2-3, magnesium oxide 4-5, zinc oxide 3-4, charcoal 3.5-4, gypsum 3-4, boron oxide 3.2-5, barium oxide 3-5, Lithium Oxide 98min 2-3, salt 2-3, trees ash 2.3-3, plant ash 2.3-3, potassium felspar sand 0.15-0.2, titanium dioxide 0.3-0.5, antimonous oxide 0.5-0.6, sodium tetraborate 0.1-0.15.

A kind of preparation method who contains the devitrified glass of trees ash may further comprise the steps:

(1) raw material with above-mentioned weight part is mixed to join in the glass-melting furnace, is melt into uniform vitreum under 1580-1620 ℃ high temperature;

(2) above-mentioned vitreum is directly dropped in the water, cold quenching becomes glass particle, then is ground into 20-25 μ m powder, the modified glass body powder that adds its weight 20-26%, mix oven dry, and be tiled on the horizontal plane with the refractory materials of trees ashes sealing coat, laid thickness is 20-25mm;

The preparation method of described modified glass body powder is: be that the plant ash of 10-14, the zinc oxide that weight part is 2-3 part, the quartz sand that weight part is 50-60, attapulgite, the weight part that weight part is 15-20 are the ground silica of 30-32 with weight part, mix and add in the glass-melting furnace, be heated under 1560-1620 ℃ the high temperature, melting 2-3 hour, be down to again 1400-1450 ℃ of lower clarification 1.5-2 hour, make glass metal, then quenching obtains broken glass body in the cold water, grinds to form 3-5 μ m modified glass body powder again;

(3) above-mentioned laid good glass particle is placed resistance furnace together with refractory materials, temperature schedule: normal temperature is heated to 340-360 ℃, 7 ℃/min of temperature rise rate; 300-360 ℃ is heated to 780-880 ℃, 7 ℃/min of temperature rise rate; At 780-880 ℃ of lower insulation 1.5-2h; Then be heated to 1350 ℃, 7 ℃/min of temperature rise rate from 880 ℃; At 1350 ℃ of lower insulation 2-3h, finish coring and crystallization process;

(4) annealing: the glass after the above-mentioned crystallization is carried out anneal with the annealing cooling rate of 3-5 ℃/min, when temperature is down in 550-620 ℃, kept constant temperature 30-40 minute, and then 5-6 ℃/min speed is warmed up to 820-870 ℃, and then with 5-7 ℃/min speed continuation cooling, when temperature is down in 270-320 ℃, naturally cool to again room temperature;

(5) as requested size 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

A kind of devitrified glass that contains the trees ash, it is comprised of the raw material of following weight parts (kilogram):

Silicon-dioxide 59, bastard coal 25, wilkinite 15, potassium felspar sand 15, clay 9, unslaked lime 8, potassium oxide 5, aluminum oxide 7.2, sodium oxide 3, magnesium oxide 4, zinc oxide 4, charcoal 3.5, gypsum 4, boron oxide 3.2, barium oxide 5, Lithium Oxide 98min 3, salt 3, trees ash 2.3, plant ash 2.3, potassium felspar sand 0.15-0.2, titanium dioxide 0.5, antimonous oxide 0.6, sodium tetraborate 0.15.

A kind of preparation method who contains the devitrified glass of trees ash may further comprise the steps:

(1) raw material with above-mentioned weight part is mixed to join in the glass-melting furnace, is melt into uniform vitreum under 1580-1620 ℃ high temperature;

(2) above-mentioned vitreum is directly dropped in the water, cold quenching becomes glass particle, then is ground into 20-25 μ m powder, the modified glass body powder that adds its weight 26%, mix oven dry, and be tiled on the horizontal plane with the refractory materials of trees ashes sealing coat, laid thickness is 25mm;

The preparation method of described modified glass body powder is: be that 60 quartz sand, weight part are that 20 attapulgite, weight part are 32 ground silica with weight part is 14 plant ash, weight part is 3 parts zinc oxide, weight part, mix and add in the glass-melting furnace, be heated under 1620 ℃ the high temperature, melting 3 hours, be down to again 1450 ℃ of lower clarifications 1.5 hours, make glass metal, obtain broken glass body in the cold water of then quenching, grind to form again 5 μ m modified glass body powder;

(3) above-mentioned laid good glass particle is placed resistance furnace together with refractory materials, temperature schedule: normal temperature is heated to 360 ℃, 7 ℃/min of temperature rise rate; 360 ℃ are heated to 880 ℃, 7 ℃/min of temperature rise rate; At 880 ℃ of lower insulation 1.5-2h; Then be heated to 1350 ℃, 7 ℃/min of temperature rise rate from 880 ℃; At 1350 ℃ of lower insulation 3h, finish coring and crystallization process;

(4) annealing: the glass after the above-mentioned crystallization is carried out anneal with the annealing cooling rate of 5 ℃/min, when temperature is down in 620 ℃, kept constant temperature 40 minutes, then 6 ℃/min speed is warmed up to 870 ℃, and then with 7 ℃/min speed continuation cooling, when temperature is down in 320 ℃, naturally cool to again room temperature;

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

Performance test:

The folding strength test: adopt MC009-wds10M type electronic universal material property testing machine to utilize the folding strength of three-point bending method working sample, (9mm * 7mm * 85mm) test calculates folding strength, averages at last to get 6 strip samples.

Microsclerometry: with the hardness of HXD-1000 digital micro-analysis hardness-testing device working sample, each sample is surveyed three points, represents its microhardness with mean value, surveys altogether three samples, calculates at last the mean value of the microhardness of three samples.

Water resistance test: adopt powder to soak weight-loss method and measure (DTN12116), sample is pulverized, get 40 now, microcrystalline glass powder 2 grams on 60 orders, in the 50ml volumetric flask, add water to scale, insulation is 60 minutes under 98 ± 0.5 ℃ of temperature, measures its 100cm ²Rate of weight loss (mg/100cm ²).

Test result:

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

2, mechanical property: average folding strength 89.8MPa, average microhardness 893.8kgf/mm ²

3, hydrolysis grade: 1 grade, rate of weight loss is: 0.288mg/100cm ²

Claims (2)

1. devitrified glass that contains the trees ash is characterized in that it is comprised of the raw material of following weight parts:

Silicon-dioxide 54-59, coal gangue 20-25, wilkinite 12-15, potassium felspar sand 10-15, clay 7-9, unslaked lime 6-8, potassium oxide 3-5, aluminum oxide 5-7.2, magnesium oxide 4-5, zinc oxide 3-4, charcoal 3.5-4, gypsum 3-4, boron oxide 3.2-5, barium oxide 3-5, Lithium Oxide 98min 2-3, salt 2-3, trees ash 2.3-3, plant ash 2.3-3, sodium oxide 2-3, potassium felspar sand 0.15-0.2, titanium dioxide 0.3-0.5, antimonous oxide 0.5-0.6, sodium tetraborate 0.1-0.15.

2. preparation method who contains the devitrified glass of trees ash as claimed in claim 1 is characterized in that may further comprise the steps:

(1) raw material with above-mentioned weight part is mixed to join in the glass-melting furnace, is melt into uniform vitreum under 1580-1620 ℃ high temperature;

(2) above-mentioned vitreum is directly dropped in the water, cold quenching becomes glass particle, then is ground into 20-25 μ m powder, the modified glass body powder that adds its weight 20-26%, mix oven dry, and be tiled on the horizontal plane with the refractory materials of trees ashes sealing coat, laid thickness is 20-25mm;

The preparation method of described modified glass body powder is: be that the plant ash of 10-14, the zinc oxide that weight part is 2-3 part, the quartz sand that weight part is 50-60, attapulgite, the weight part that weight part is 15-20 are the ground silica of 30-32 with weight part, mix and add in the glass-melting furnace, be heated under 1560-1620 ℃ the high temperature, melting 2-3 hour, be down to again 1400-1450 ℃ of lower clarification 1.5-2 hour, make glass metal, then quenching obtains broken glass body in the cold water, grinds to form 3-5 μ m modified glass body powder again;

(3) above-mentioned laid good glass particle is placed resistance furnace together with refractory materials, temperature schedule: normal temperature is heated to 340-360 ℃, 7 ℃/min of temperature rise rate; 300-360 ℃ is heated to 780-880 ℃, 7 ℃/min of temperature rise rate; At 780-880 ℃ of lower insulation 1.5-2h; Then be heated to 1350 ℃, 7 ℃/min of temperature rise rate from 880 ℃; At 1350 ℃ of lower insulation 2-3h, finish coring and crystallization process;

(4) annealing: the glass after the above-mentioned crystallization is carried out anneal with the annealing cooling rate of 3-5 ℃/min, when temperature is down in 550-620 ℃, kept constant temperature 30-40 minute, and then 5-6 ℃/min speed is warmed up to 820-870 ℃, and then with 5-7 ℃/min speed continuation cooling, when temperature is down in 270-320 ℃, naturally cool to again room temperature;

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