A kind of regeneration brick utilizing paper mill sludge obtained and preparation method thereof
Technical field
The present invention relates to a kind of regeneration brick, particularly a kind of regeneration brick utilizing paper mill sludge obtained and preparation method thereof.
Background technology
China is that brick body consumes big country; also be the big producing country of brick body; common brick is traditional materials for wall; main arable land lower floor clay is raw material; after being built into rectangular parallelepiped adobe, in brickkiln, open fire calcination forms; this brick is the most frequently used material of construction in current city and rural area; in order to protect the arable land of day by day reducing; country has prohibited the production of clay brick; in the past, also once trial cement brick replaces clay brick, but the production of cement brick and use cost higher; also exist simultaneously and self estimate one's own ability greatly, be not suitable with the defect that Highrise buildings uses.
Papermaking waste material is a kind of industrial waste, is the method adopting burning at present to its process.Need to adopt great amount of fuel oil in burning process, and the mixture heat gas of the great amount of carbon dioxide produced in fuel combustion process, carbon monoxide, hydrocarbon polymer also can cause secondary pollution to environment.China Patent Publication No. is that CN1408675 discloses a kind of method utilizing regenerated papermaking mud to prepare vitrified brick, the method comprises the following steps: a) carry out pre-treatment with sterilant to regenerated papermaking mud, b) 70 ~ 85 parts by weight clay, the pretreated regenerated papermaking mud of 10 ~ 25 weight part and 5 ~ 10 weight part cinders are mixed, c) gained mixture is extruded into base bar, cut into adobe, after drying, with the sintering temperature of 600 ~ 700 DEG C, adobe is sintered.This patent utilization regenerated papermaking mud prepares vitrified brick, avoids the pollution to environment of burning papermaking waste material, it also avoid and take the destruction of farmland clay-brickmaking to soil resource.But this patent only adopts paper mill sludge and clay as aggregate brickmaking, because paper mill sludge characteristic inherently can cause its consumption to be very limited, paper mill sludge cannot be effectively utilized, the consumption of clay is still very large, environment protecting is not obvious, consumption as the paper mill sludge pointed by this patent specification is only suitable for 15 ~ 25 weight parts, the consumption of paper mill sludge too much can make the density of obtained vitrified brick excessive, poor air permeability, and ultimate compression strength is bad, the consumption of paper mill sludge very little, the corresponding minimizing of staple fibre amount can be caused, thus heat is inadequate when causing adobe to sinter, calorific value required when cannot reach sintering, if improve the consumption that calorific value can only strengthen cinder, but cinder consumption can cause again adobe cracking when sintering too much.Above-mentioned technical problem causes paper mill sludge well to be utilized always.
In addition, China is the country based on combustion power generation, every year because combustion power generation can discharge a large amount of waste incineration residues, i.e. refuse-burning plant sintering ash, this refuse-burning plant sintering ash causes serious pollution and harm, and containing the useful component such as part iron and calcium oxide in refuse-burning plant sintering ash, if can recycle, will a lot of valuable resource be saved.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of regeneration brick utilizing paper mill sludge obtained and preparation method thereof, solves the problem that paper mill sludge brickmaking utilization ratio is restricted, and avoids the bad defects such as the low and poor air permeability of paper mill sludge brickmaking resistance to compression, rupture strength.
For solving this technical problem, the present invention takes following scheme: a kind of regeneration brick utilizing paper mill sludge obtained, is made up of the raw material of following weight proportioning:
Water ratio is the paper mill sludge of 45 ~ 55%: 35 ~ 40 weight parts;
Power station sintering ash: 20 ~ 25 weight parts;
Clay: 40 ~ 45 weight parts;
Fire-retardant permeable fiber monofilament: 2.5 ~ 4 weight parts;
Hard coal: 3 ~ 5 weight parts;
Water soluble resin: 3 ~ 5 weight parts;
Water: 4 ~ 7 weight parts.
Further improvement: the weight proportion of described raw material is:
Water ratio is the paper mill sludge of 45 ~ 55%: 40 weight parts;
Power station sintering ash: 25 weight parts;
Clay: 45 weight parts;
Fire-retardant permeable fiber monofilament: 4 weight parts;
Hard coal: 5 weight parts;
Water soluble resin: 5 weight parts;
Water: 7 weight parts.
Further improvement: the weight proportion of described raw material is:
Water ratio is the paper mill sludge of 45 ~ 55%: 35 weight parts;
Power station sintering ash: 20 weight parts;
Clay: 40 weight parts;
Fire-retardant permeable fiber monofilament: 2.5 weight parts;
Hard coal: 3 weight parts;
Water soluble resin: 3 weight parts;
Water: 4 weight parts.
Further improvement: the particle diameter of described power station sintering ash is 5 ~ 10mm.
Prepare a method for regeneration brick by above-mentioned regeneration brick proportioning raw materials, comprise the steps:
1), sintering ash in power station is pulverized: power station sintering ash is crushed to the block material that particle diameter is 5 ~ 10mm;
2), paper mill sludge drying treatment: the paper mill sludge after the process of gas sterilization and disinfection is carried out drying treatment, makes its water content drop to 45 ~ 55% by 70%;
3), batching stirs: by the proportioning raw materials of the arbitrary claim of the claims 1 to 3, is that paper mill sludge and the particle diameter of 45 ~ 55% is that the power station of 5 ~ 10mm sinters ash, clay, fire-retardant permeable fiber monofilament, hard coal and water-soluble unsaturated polyester and adds the mixture that water is mixed into moist shape by water ratio;
4), extrusion moulding: the mixture of above-mentioned moist shape is extruded into base bar, cuts into adobe;
5), the obtained finished product of sintering: by sintering in furnace after adobe natural air drying, entering kiln temperature degree is normal temperature, 950 ~ 1050 DEG C are warming up to after 25 minutes, temperature control is after 3 ~ 3.5 hours, lower the temperature gradually, be incubated half an hour again when being cooled to 100 ~ 150 DEG C, then continued down to 40 DEG C, open wicket, take out finished product.
By adopting preceding solution, the invention has the beneficial effects as follows: regeneration brick of the present invention adopts the brickmaking of power station sintering ash mixing paper mill sludge, utilize power station to sinter ash and contain the bad defect that density is large, ultimate compression strength is low that the brickmaking useful matter such as a small amount of iron powder and calcium oxide has neutralized paper mill sludge brickmaking, the iron powder that power station sintering ash contains contributes to improving the intensity of brick, and can sintering time be shortened, calcium oxide can improve bridging property and the adhesive of brick, and the effect of sterilization and sterilization can be played to paper mill sludge, reduce material cost; And also containing a lot of flammable industrial waste in power station sintering ash; rate of roasting can be accelerated; accelerate the turnover of tunnel furnace; improve the Quality and yield of finished bricks; shorten the drying cycle of adobe, power station sintering ash and paper mill sludge manufacturing bricks by mixing also can be alleviated the density of finished bricks, increase the ventilation property of brick body; reduce thermal conductivity and thermosteresis, improve heat-insulation and heat-preservation ability; Also be mixed with fire-retardant permeable fiber monofilament in raw material of the present invention and can improve the rupture strength of recycled sinter brick and the ventilation property of ultimate compression strength and brick again, solve the defect of the low and poor air permeability of prior art paper mill sludge consumption too much brickmaking ultimate compression strength, greatly can improve the utilization ratio of paper mill sludge, greatly reduce the consumption of clay, environment protecting is obvious, during week, the present invention adopts baked weather resistance and the specific tenacity increasing substantially regeneration brick of the present invention of specific temperature control curve, prevents from ftractureing when brick is bad to be sintered.
Embodiment
Now the present invention is further described for combination and specific embodiment.
The embodiment of the present invention one discloses a kind of regeneration brick utilizing paper mill sludge obtained, is made up of the raw material of following weight proportioning:
Water ratio is the paper mill sludge of 55%: 40 weight parts;
Power station sintering ash: 25 weight parts;
Clay: 45 weight parts;
Fire-retardant permeable fiber monofilament: 4 weight parts;
Hard coal: 5 weight parts;
Water soluble resin: 5 weight parts;
Water: 7 weight parts.
Prepare the method for regeneration brick with above-described embodiment one weight proportion raw material, comprise the steps:
1), sintering ash in power station is pulverized: power station sintering ash is crushed to the block material that particle diameter is 10mm;
2), paper mill sludge drying treatment: the paper mill sludge after the process of gas sterilization and disinfection is carried out drying treatment, makes its water content drop to 55% by 70%;
3), batching stirs: by above-mentioned raw materials proportioning, is that paper mill sludge and the particle diameter of 55% is that the power station of 10mm sinters ash, clay, fire-retardant permeable fiber monofilament, hard coal and water-soluble unsaturated polyester and adds the mixture that water is mixed into moist shape by water ratio;
4), extrusion moulding: the mixture of above-mentioned moist shape is extruded into base bar, cuts into adobe;
5), the obtained finished product of sintering: by sintering in furnace after adobe natural air drying, entering kiln temperature degree is normal temperature, is warming up to 1050 DEG C after 25 minutes, temperature control, after 3.5 hours, is lowered the temperature gradually, is incubated half an hour again when being cooled to 150 DEG C, then continued down to 40 DEG C, opens wicket, takes out finished product.
The regeneration brick obtained by above-mentioned proportioning raw materials and method after testing its monolithic brick ultimate compression strength is 17.6Mpa, and volume density is 1320kg/m
3, water-intake rate 14.3%, complies with the national standard requirements.
The embodiment of the present invention two discloses a kind of regeneration brick utilizing paper mill sludge obtained, is made up of the raw material of following weight proportioning:
Water ratio is the paper mill sludge of 45%: 35 weight parts;
Power station sintering ash: 20 weight parts;
Clay: 40 weight parts;
Fire-retardant permeable fiber monofilament: 2.5 weight parts;
Hard coal: 3 weight parts;
Water soluble resin: 3 weight parts;
Water: 4 weight parts.
Prepare the method for regeneration brick with above-described embodiment two weight proportion raw material, comprise the steps:
1), sintering ash in power station is pulverized: power station sintering ash is crushed to the block material that particle diameter is 10mm;
2), paper mill sludge drying treatment: the paper mill sludge after the process of gas sterilization and disinfection is carried out drying treatment, makes its water content drop to 45% by 70%;
3), batching stirs: by above-mentioned raw materials proportioning, is that paper mill sludge and the particle diameter of 45% is that the power station of 10mm sinters ash, clay, fire-retardant permeable fiber monofilament, hard coal and water-soluble unsaturated polyester and adds the mixture that water is mixed into moist shape by water ratio;
4), extrusion moulding: the mixture of above-mentioned moist shape is extruded into base bar, cuts into adobe;
5), the obtained finished product of sintering: by sintering in furnace after adobe natural air drying, entering kiln temperature degree is normal temperature, is warming up to 950 DEG C after 25 minutes, temperature control, after 3 hours, is lowered the temperature gradually, is incubated half an hour again when being cooled to 100 DEG C, then continued down to 40 DEG C, opens wicket, takes out finished product.
The regeneration brick obtained by above-mentioned proportioning raw materials and method after testing its monolithic brick ultimate compression strength is 17.9Mpa, and volume density is 1307kg/m
3, water-intake rate 15.1%, complies with the national standard requirements.
Regeneration brick of the present invention adopts the brickmaking of power station sintering ash mixing paper mill sludge, utilize power station to sinter ash and contain the bad defect that density is large, ultimate compression strength is low that the brickmaking useful matter such as a small amount of iron powder and calcium oxide has neutralized paper mill sludge brickmaking, the iron powder that power station sintering ash contains contributes to improving the intensity of brick, and can sintering time be shortened, calcium oxide can improve bridging property and the adhesive of brick, and the effect of sterilization and sterilization can be played to paper mill sludge, reduce material cost; And also containing a lot of flammable industrial waste in power station sintering ash; rate of roasting can be accelerated; accelerate the turnover of tunnel furnace; improve the Quality and yield of finished bricks; shorten the drying cycle of adobe, power station sintering ash and paper mill sludge manufacturing bricks by mixing also can be alleviated the density of finished bricks, increase the ventilation property of brick body; reduce thermal conductivity and thermosteresis, improve heat-insulation and heat-preservation ability; Also be mixed with fire-retardant permeable fiber monofilament in raw material of the present invention and can improve the rupture strength of recycled sinter brick and the ventilation property of ultimate compression strength and brick again, solve the defect of the low and poor air permeability of prior art paper mill sludge consumption too much brickmaking ultimate compression strength, greatly can improve the utilization ratio of paper mill sludge, greatly reduce the consumption of clay, environment protecting is obvious, during week, the present invention adopts baked weather resistance and the specific tenacity increasing substantially regeneration brick of the present invention of specific temperature control curve, prevents from ftractureing when brick is bad to be sintered.
Above, be only the embodiment utilizing this origination techniques content, the modification that any those skilled in the art use this creation to do, change, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.