CN105272106A - Aerated building block used for building exterior walls, and making method thereof - Google Patents

Abstract

The invention discloses an aerated building block used for building exterior walls, and a making method thereof. The aerated building block is made from, by weight, 46-58 parts of metallurgic waste residues, 37-49 parts of building wastes, 24-38 parts of chalky clay, 18-32 parts of drilling well waste slurry, 22-34 parts of chimney soot, 45-55 parts of fluorgypsum, 16-28 parts of potassium pyrophosphate, 24-36 parts of round gravel, 19-37 parts of lead and zinc slag, 12-19 parts of polyvinyl alcohol, 23-35 parts of porous ceramsite, 10-15 parts of borax, 5-7 parts of magnesium diamide and a proper amount of water. The aerated building block made from the metallurgic waste residues, building wastes, chalky clay, drilling well waste slurry, chimney soot and other raw materials has the advantages of excellent comprehensive performances, excellent heat insulation, sound insulation and sound absorption functions, excellent mechanical performances, excellent high temperature resistance, excellent shock resistance, excellent cracking resistance, long service life and large market prospect.

Description

A kind of aerated-block for external wall and preparation method thereof

Technical field

The present invention relates to a kind of aerated-block for external wall and preparation method thereof, belong to building material field.

Background technology

Aerated-block is a kind of energy-conservation, joint soil, sharp useless novel wall material, there is light weight, heat-insulation and heat-preservation, sound absorption sound insulation, antidetonation, fire prevention, can saw, can dig, can follow closely, easy construction and the advantages such as buildings usable floor area can be increased, and to be widely used in civilian and public various building.Along with the fast development of China's building trade and improving constantly of people's living standard, more and more higher to the performance requriements of aerated-block, but the current over-all properties for the aerated-block of external wall more and more cannot meet the demand in market, therefore, the aerated-block of a kind of excellent combination property of exploitation is badly in need of.For external wall.

Summary of the invention

The object of the present invention is to provide aerated-block for external wall of a kind of excellent combination property and preparation method thereof.

For achieving the above object, the present invention adopts following technical scheme:

For an aerated-block for external wall, be made up of the raw material of following weight part: metallurgical slag 46-58, construction waste 37-49, muddy limestone 24-38, drilling waste mud 18-32, chimney soot 22-34, fluorgypsum 45-55, potassium pyrophosphate 16-28, rounded gravel 24-36, lead-zinc furnace cinder 19-37, polyvinyl alcohol 12-19, porous ceramic grain 23-35, borax 10-15, magnesium amid 5-7, water are appropriate;

The preparation method of described porous ceramic grain is as follows: a, in mass ratio 6-9:3-5:2-4 take Titanium slag, pearlite tail sand, glass cullet, mix, and pulverizes, and crosses 300-500 mesh sieve; B, in mass ratio 5-7:2-4:1-2 take flyash, natural zeolite, malthacite, mix, and pulverize, and cross 200-400 mesh sieve, add the water being equivalent to mixed powder weight 3-5 times amount, wet ball grinding 2-3h, dry; The sodium bicarbonate being equivalent to the spent pulping liquor of the powder weight 25-35% that step a obtains, the ammonium nitrite of 4-8% and 2-4% is added in c, the powder that obtains to step a, mix, wet granulation, size controlling is at 0.3-0.6mm, then microwave agglomerating furnace is put into, microwave heating is to 510-560 DEG C, and insulation 30-40min, is cooled to normal temperature; D, in mass ratio 2-4:1 take powder that step b obtains and the obtained particle of step c, mix, then add the attapulgite and appropriate water that are equivalent to mixture weight 18-24%, mix, wet granulation, size controlling, at 0.8-1.2mm, then puts into retort furnace, with the ramp of 5-7 DEG C/min to 860-890 DEG C, insulation 0.5-1h, again with the ramp of 3-5 DEG C/min to 1180-1260 DEG C, insulation 1-2h, be cooled to normal temperature.

The homemade porous ceramics of the present invention is made with raw materials such as Titanium slag, pearlite tail sand, glass cullet, flyash, natural zeolite, malthacites, and have pore and enrich, intensity is high; fire-resistant; withstand voltage, the advantages such as acid-alkali-corrosive-resisting, are applied to aerated-block; not only can improve mechanical property and the refractoriness of aerated-block; can also improve heat insulation property and the sound insulating and absorbing of aerated-block, and raw material sources are extensive, technique is simple; with low cost, mass-producing can be applied to aerated-block.

For a preparation method for the aerated-block of external wall, be made up of the following step:

(1) get metallurgical slag and muddy limestone mixes, pulverize, mix after crossing 100-150 mesh sieve with drilling waste mud, stirring 3-6min, obtains compound A;

(2) get construction waste, rounded gravel and lead-zinc furnace cinder to mix, pulverize, mix with chimney soot, borax after crossing 80-120 mesh sieve, stir 2-5min, obtain compound B;

(3) above-mentioned obtained compound A and compound B is mixed, and add magnesium amid, porous ceramic grain, fluorgypsum, potassium pyrophosphate, polyvinyl alcohol successively while stirring, stir rear injection mould, and add the water content of appropriate water to compound to 50-60%, get angry 40-50min;

(4) mould is put into curing room 55-65 DEG C vapor cure, get product.

Beneficial effect of the present invention:

The aerated-block excellent combination property that the present invention adopts the raw materials such as metallurgical slag, construction waste, muddy limestone, drilling waste mud, chimney soot to make, not only there is excellent heat insulating and sound insulating and absorbing function, also there is the excellent advantage such as mechanical property, resistance to elevated temperatures, anti-seismic performance, anti-cracking performance, long service life, market outlook are large.

Embodiment

For an aerated-block for external wall, be made up of the raw material of following weight (kg): metallurgical slag 54, construction waste 46, muddy limestone 37, drilling waste mud 28, chimney soot 29, fluorgypsum 50, potassium pyrophosphate 24, rounded gravel 32, lead-zinc furnace cinder 34, polyvinyl alcohol 16, porous ceramic grain 31, borax 12, magnesium amid 6, water are appropriate;

The preparation method of described porous ceramic grain is as follows: a, in mass ratio 8:5:2 take Titanium slag, pearlite tail sand, glass cullet, mix, and pulverizes, and crosses 400 mesh sieves; B, in mass ratio 6:3:1 take flyash, natural zeolite, malthacite, mix, and pulverize, and cross 250 mesh sieves, add the water being equivalent to mixed powder weight 3 times amount, wet ball grinding 2.5h, dry; Add in c, the powder that obtains to step a be equivalent to step a and obtain the spent pulping liquor of powder weight 28%, the ammonium nitrite of 5% and 2.5% sodium bicarbonate, mix, wet granulation, size controlling is at 0.3mm, then microwave agglomerating furnace is put into, microwave heating to 550 DEG C, insulation 30min, is cooled to normal temperature; D, in mass ratio 3:1 take powder that step b obtains and the obtained particle of step c, mix, then add the attapulgite and appropriate water that are equivalent to mixture weight 22%, mix, wet granulation, size controlling, at 0.8mm, then puts into retort furnace, with the ramp to 880 DEG C of 7 DEG C/min, insulation 0.5h, again with the ramp to 1240 DEG C of 4 DEG C/min, insulation 1h, is cooled to normal temperature.

For a preparation method for the aerated-block of external wall, be made up of the following step:

(1) get metallurgical slag and muddy limestone mixes, pulverize, mix after crossing 100-150 mesh sieve with drilling waste mud, stirring 3-6min, obtains compound A;

(2) get construction waste, rounded gravel and lead-zinc furnace cinder to mix, pulverize, mix with chimney soot, borax after crossing 80-120 mesh sieve, stir 2-5min, obtain compound B;

(3) above-mentioned obtained compound A and compound B is mixed, and add magnesium amid, porous ceramic grain, fluorgypsum, potassium pyrophosphate, polyvinyl alcohol successively while stirring, stir rear injection mould, and add the water content of appropriate water to compound to 50-60%, get angry 40-50min;

(4) mould is put into curing room 55-65 DEG C vapor cure, get product.

The aerated-block that above-described embodiment obtains salient features detect see the following form:

Project	Unit	Detected result
			Cold crushing strength	Mpa	6.6
Drying shrinkage value	mm/m	0.5
			Thermal conductivity	W/m.K	0.07
Seismic behavior	Level	10

Claims (2)

1. the aerated-block for external wall, it is characterized in that, be made up of the raw material of following weight part: metallurgical slag 46-58, construction waste 37-49, muddy limestone 24-38, drilling waste mud 18-32, chimney soot 22-34, fluorgypsum 45-55, potassium pyrophosphate 16-28, rounded gravel 24-36, lead-zinc furnace cinder 19-37, polyvinyl alcohol 12-19, porous ceramic grain 23-35, borax 10-15, magnesium amid 5-7, water are appropriate;

The preparation method of described porous ceramic grain is as follows: a, in mass ratio 6-9:3-5:2-4 take Titanium slag, pearlite tail sand, glass cullet, mix, and pulverizes, and crosses 300-500 mesh sieve; B, in mass ratio 5-7:2-4:1-2 take flyash, natural zeolite, malthacite, mix, and pulverize, and cross 200-400 mesh sieve, add the water being equivalent to mixed powder weight 3-5 times amount, wet ball grinding 2-3h, dry; The sodium bicarbonate being equivalent to the spent pulping liquor of the powder weight 25-35% that step a obtains, the ammonium nitrite of 4-8% and 2-4% is added in c, the powder that obtains to step a, mix, wet granulation, size controlling is at 0.3-0.6mm, then microwave agglomerating furnace is put into, microwave heating is to 510-560 DEG C, and insulation 30-40min, is cooled to normal temperature; D, in mass ratio 2-4:1 take powder that step b obtains and the obtained particle of step c, mix, then add the attapulgite and appropriate water that are equivalent to mixture weight 18-24%, mix, wet granulation, size controlling, at 0.8-1.2mm, then puts into retort furnace, with the ramp of 5-7 DEG C/min to 860-890 DEG C, insulation 0.5-1h, again with the ramp of 3-5 DEG C/min to 1180-1260 DEG C, insulation 1-2h, be cooled to normal temperature.

2. the preparation method of the aerated-block for external wall according to claim 1, is characterized in that, be made up of the following step:

(1) get metallurgical slag and muddy limestone mixes, pulverize, mix after crossing 100-150 mesh sieve with drilling waste mud, stirring 3-6min, obtains compound A;

(2) get construction waste, rounded gravel and lead-zinc furnace cinder to mix, pulverize, mix with chimney soot, borax after crossing 80-120 mesh sieve, stir 2-5min, obtain compound B;

(3) above-mentioned obtained compound A and compound B is mixed, and add magnesium amid, porous ceramic grain, fluorgypsum, potassium pyrophosphate, polyvinyl alcohol successively while stirring, stir rear injection mould, and add the water content of appropriate water to compound to 50-60%, get angry 40-50min;

(4) mould is put into curing room 55-65 DEG C vapor cure, get product.