CN102643107A - Calcination-free desulfurized gypsum-based ceramsite concrete perforated brick - Google Patents
Calcination-free desulfurized gypsum-based ceramsite concrete perforated brick Download PDFInfo
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- CN102643107A CN102643107A CN2012101541405A CN201210154140A CN102643107A CN 102643107 A CN102643107 A CN 102643107A CN 2012101541405 A CN2012101541405 A CN 2012101541405A CN 201210154140 A CN201210154140 A CN 201210154140A CN 102643107 A CN102643107 A CN 102643107A
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Abstract
The invention relates to a calcination-free desulfurized gypsum-based ceramsite concrete perforated brick and belongs to the technical field of building materials. In order to solve the technical problems that the material ratio is not reasonable, the raw material setting time is too fast and the porosity is low in the prior art, the invention provides the calcination-free desulfurized gypsum-based ceramsite concrete perforated brick. The perforated brick is mainly prepared from the following raw materials: 30-50 percent of calcination-free desulfurized gypsum, 10-30 percent of cinerite active material, 15-30 percent of ceramsite, 5-10 percent of sulfate exciting agent, 0.1-0.3 percent of retarder, 10-30 percent of coal cinder powder and 5-15 percent of ceramsite sand. The perforated brick provided by the invention has the advantages of high strength, light weight, good thermal insulation property, high porosity, heat insulation, water resistance, high sound absorbing power and good sound insulation effect. The used raw materials can be easily obtained, are low in cost and are in favorable of industrial production.
Description
Technical field
The present invention relates to a kind of concrete perforated brick, relate in particular to a kind of calcination-free desulfurized gypsum base haydite concrete perforated brick, belong to building material technical field.
Background technology
Desulfurated plaster is the by product of coal-fired industry, is the chemical by-product that flue gas desulfurization produces, and mainly is made up of the calcium sulfate of two crystal water.
China is coal-fired big country; The coal fired power generation amount accounts for 80% of gross generation; And the coal fire discharged flue gas that contains sulfurous gas in a large number, serious environment pollution, so state compulsion regulation fuel-burning power plant and other must install flue gas desulfurization device additional at the type coal combustion equipment; The main sulfur method that adopts is wet type limestone/gypsum technology and equipment; Though alleviated sulfur dioxide in flue gas, produced a large amount of solid waste desulfurated plasters simultaneously again, to the problem of soil, water source, atmospheric pollution and land purchase storing to atmospheric pollution.For addressing this problem, many enterprises comprise device fabrication, manufacturing enterprise, after super-dry, calcining, grinding processing, become β-semi-hydrated gypsum to the desulfurated plaster of original state (two water desulfurated plasters), the reprocessing production application.But still there are complex process, unstable product quality and also have secondary energy consumption, secondary pollution problems.At present more common is without calcining, directly adopts the original state desulfurated plaster to be processed into wall body brick etc., need not pass through calcining, has also reduced secondary pollution problems.
(publication number: CN101891438A) disclose a kind of calcination-free desulfurized gypsum phosphogypsum self-insulation gypsum brick and working method thereof, this gypsum brick is made up of following component and weight: original state two water desulfurated plasters: 60%～80% like one Chinese patent application; Pozzolanic activity mineral material: 10%～25%; Alkaline excitation material: 5%～15%; Short gel material: 0.5%～2%; Aggregate: 100%～200%; Light skeletal: 25%～40%.This gypsum is all preferable aspect resistance to compression, thermal conductivity, heat storage coefficient, coefficient of softening, drying shrinkage and combustionproperty rank.But its original state desulfurated plaster large usage quantity makes overall performance also have weak point, like performances such as the density of gypsum brick, porositys, and since this material to form time of coagulation shorter, be unfavorable for depositing, thereby influence actual production.
Summary of the invention
The present invention is directed to the defective that exists in the above prior art; The calcination-free desulfurized gypsum base haydite concrete perforated brick of a kind of lightweight, good heat insulating, intensity height, reasonable ratio is provided; Also be to provide a kind of shelf-time that is used to prepare perforated brick long, be difficult for the agglomerative raw material.
The objective of the invention is to realize through following technical proposal: a kind of calcination-free desulfurized gypsum base haydite concrete perforated brick, described perforated brick is mainly processed by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%～50%; Pozzolanic activity material: 10%～30%; Haydite: 15%～30%; Sulphate activation agent: 5%～10%; Retardant: 0.1%～0.3%; Cinder powder: 10%～30%; Pottery sand: 5%～15%.
Above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention is used the solid waste desulfurated plaster that power plant produces, and need not pass through calcining; Directly adopt calcination-free desulfurized gypsum, but because desulfurated plaster is the air-setting material, itself there is not self-hardening property; Do not have gelling yet; The present invention, carries out hydration reaction with water and generates gelling under the activation of pozzolanic activity material and sulphate activation agent through adding pozzolanic activity material, sulphate activation agent; Make by air hardening cementitious materials and become hydraulic cementing materials; Thereby form close stone, compact skeleton structure uniformly, product strength is got a greater increase, aspect water tolerance, also be greatly improved simultaneously.And improve the performance of material through adding cinder powder, haydite, pottery sand and retardant, and slow down inspissated on the one hand, thereby pilling up time is increased, can not cause because of the long agglomerative phenomenon of pilling up time; On the other hand, more help impact briquetting, hydrothermal curing generation calcination-free desulfurized gypsum base haydite concrete perforated brick.The present invention also improves and adjusts weight proportion through the composition to raw material, makes proportioning more reasonable, and the perforated brick that obtains not only has lightweight, good heat insulating, advantage that intensity is high, also has effective advantages such as heat insulation, sound insulation, fire prevention.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described perforated brick is mainly processed by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 35%～45%; Pozzolanic activity material: 15%～20%; Haydite: 20%～25%; Sulphate activation agent: 7%～8%; Retardant: 0.2%～0.25%; Cinder powder: 15%～25%; Pottery sand: 8%～12%.
As preferably, in above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, the specification of quality of said calcination-free desulfurized gypsum is (wt%):
Terra alba:>=95%; Mg0:＜0.10%; Al
2O
3:＜0.30%;
Fe
2O
3:＜0.15%; Cl
-:＜0.01%; PH value: 5～8;
The adhesion water of described calcination-free desulfurized gypsum:＜10%.Adopt above-mentioned preferred calcination-free desulfurized gypsum, more can improve between the formed gelling and combine compactness.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, said pozzolanic activity material is selected from one or more in flyash, slag powders, the high-calcium fly ass.Adopt above-mentioned pozzolanic activity material not only can improve the hydraulicity performance of desulfurated plaster, also make industrial residues such as flyash, slag obtain comprehensive utilization.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, said sulphate activation agent is selected from one or more in calcium sulfate, sulfuric acid acid hydrogen calcium, sal epsom, the permanent white.Compare with the available technology adopting alkali-activator; The present invention selects neutral vitriol as exciting agent, has both improved the porosity of perforated brick, improves the sound absorbing power of product; Thereby realize the sound damping effect; And selected sulphate activation agent is a kind of neutral raw material, has also prevented the caustic corrosion phenomenon because of adopting alkali-activator to exist, and more helps operation.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, said retardant is a carbohydrate.Have more oh group in the glucide, can and calcination-free desulfurized gypsum between form hydrogen bond, help forming jelling structure, and described glucide can also play delayed coagulation with the material that calcination-free desulfurized gypsum forms.Be used in combination better effects if with pozzolanic activity material and sulphate activation agent.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described carbohydrate is selected from a kind of in monose, polysaccharide, the oligose.Described monose such as glucose, fructose etc.; Described polysaccharide such as chitosan, starch etc.; Described oligose such as sucrose etc.It is to play delayed coagulation that above-mentioned carbohydrate mainly acts on, and prolongs the setting time of gypsum, satisfies perforated brick production of calcination-free desulfurized gypsum base haydite concrete and specification of quality to reach.Simultaneously above-mentioned carbohydrate such as glucose, sucrose, chitosan etc. can be adsorbed in the gypsum particle surface, can prolong time of coagulation equally.For the increase of carbohydrate volume, its slow setting time can corresponding prolongation.Preferred as further, described carbohydrate is selected from one or more in sucrose, starch, the chitosan.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, said admixture is a powdered iron ore.The staple of described powdered iron ore is an iron cpd, can improve the unit weight performance of haydite through adding powdered iron ore, can also improve the porosity of haydite, is used to prepare perforated brick of the present invention and can improves porosity, realizes acoustically effective efficiently.As preferably, described mud is municipal sludge, and the chemical ingredients of said municipal sludge and weight percent thereof are:
SiO
2：55%～65%；Al
2O
3：12%～18%；
CaO：0.5%～1.5%；MgO：1.5%～2.5%；
Fe
2O
3: 6.5%～7.5%; Loss on ignition: 6.5%～7.5%;
All the other are impurity.Described impurity is K
20, impurity such as NaO or organic matter.Adopt municipal sludge, can more directly solve the pollution problem of municipal sludge, realize " turning waste into wealth " environment.The composition of the chemical ingredients of above-mentioned municipal sludge and clay, shale etc. is more approaching, can better replace to adopt shale, clay etc. for the existing problem of main raw material, has well solved problems such as environmental pollution again.The water cut of said municipal sludge can be 5%～12%, and said water cut is a mass water content.Controlling moisture content can be enhanced productivity, and also helps the formability of haydite.As preferably, described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, the iron sulphide breeze.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, the performance perameter of said haydite is: tap density: 450～600kg/m
3Apparent density: 800～900kg/m
31h water-intake rate :≤4.0%.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, the performance perameter of said pottery sand is:
Tap density :≤800kg/m
3Cylindrical compress strength:>=2.5MPa; Water ratio :≤0.5%; Particle diameter:＜4mm.Wherein said water ratio is the quality water ratio.Select the pottery sand of above-mentioned performance for use, the strength property of raising perforated brick that can be further.Further preferred, the performance perameter of said pottery sand is:
Tap density: 700～800kg/m
3Cylindrical compress strength: 2.5～3.5MPa; Water ratio :≤0.5%; Particle diameter: 1～4mm.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, the performance perameter of described perforated brick is:
Grade strength: Mu5.0; Density rating: 600～700 grades; Equivalent heat conductivity :≤0.20W/mK; Porosity: 30%～45%.Preferred as further, described porosity is 35%～40%.
Above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention can adopt the conventional method in this area to prepare, as preferably; Above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick and prepares through following method, and this method comprises: calcination-free desulfurized gypsum, pozzolanic activity material and sulphate activation agent are added in the mixing machine mix in proportion, and then add other raw materials and an amount of water; Stir, after mixing, through shaper; Impact briquetting, quiet naturally putting is again under normal pressure; Be that hydrothermal curing obtains calcination-free desulfurized gypsum base haydite concrete perforated brick under 50 ℃～80 ℃ the condition in temperature.
In sum, compared with prior art, the present invention has the following advantages:
1. calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention has the strength property height, light weight, and good heat insulating, and porosity is high, and sound absorbing power is strong, has the good advantage of soundproof effect, also has advantage heat insulation, water-tolerant.
2. calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention, it is more reasonable that used raw material is formed, and each composition complements each other between forming; And raw material of the present invention need not adopt certain corrosive alkali-activator; More help the actual production operation, simultaneously, the present invention selects for use glucide as retardant; Make structure form the interphase interaction better effects if, the intensity of the product perforated brick that obtains is also better.
3. calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention, used raw material is easy to get, and cost is low, more helps industrial applications.
Embodiment
Through specific embodiment, further bright specifically below to technical scheme work of the present invention, but the present invention is not limited to these embodiment.
Embodiment 1
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 50%;
Pozzolanic activity material: 10%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.1%;
Cinder powder: 14.9%;
Pottery sand: 5%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is:
At first calcination-free desulfurized gypsum, pozzolanic activity material and sulphate activation agent are added in the mixing machine and mix, after the pulverizing, add haydite, retardant, pottery sand and the cinder powder of above-mentioned weight percent again, add in the mixing machine again and mix by above-mentioned weight percent; Pulverize, obtain compound, during use, above-mentioned compound is mixed with an amount of water; After mixing, through shaper, after the impact briquetting; Naturally quiet putting 10～20 hours, then, again at normal pressure; Temperature is that hydrothermal curing 8～18 hours obtains calcination-free desulfurized gypsum base haydite concrete perforated brick under 50 ℃～80 ℃ the condition.
Embodiment 2
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 21.7%;
Haydite: 20%;
Sulphate activation agent: 10%;
Retardant: 0.3%;
Cinder powder: 10%;
Pottery sand: 8%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 3
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 35%;
Pozzolanic activity material: 10%;
Haydite: 25%;
Sulphate activation agent: 7%;
Retardant: 0.2%;
Cinder powder: 10%;
Pottery sand: 12.8%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 4
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 30%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 10.8%;
Pottery sand: 9%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 5
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 45%;
Pozzolanic activity material: 15%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.3%;
Cinder powder: 14%;
Pottery sand: 5.7%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 6
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 10%;
Haydite: 30%;
Sulphate activation agent: 8%;
Retardant: 0.2%;
Cinder powder: 10%;
Pottery sand: 11.8%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 7
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 10%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 25%;
Pottery sand: 14.8%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 8
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 10%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 30%;
Pottery sand: 9.8%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 9
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 10%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 24.8%;
Pottery sand: 15%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 10
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 30%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 10.8%;
Pottery sand: 9%.
Above-mentioned described pozzolanic activity material is selected from one or more in flyash, slag powders, the high-calcium fly ass; Described sulphate activation agent is selected from one or more in calcium sulfate, sulfuric acid acid hydrogen calcium, sal epsom, the permanent white; Described retardant is a carbohydrate; Described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 11
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 10%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 30%;
Pottery sand: 9.8%.
Above-mentioned described pozzolanic activity material is selected from flyash; Described sulphate activation agent is selected from calcium sulfate; Described retardant is a carbohydrate, and described carbohydrate is selected from one or more in monose, polysaccharide, the oligose; Described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore.Described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, the iron sulphide breeze.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 12
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 21.7%;
Haydite: 20%;
Sulphate activation agent: 10%;
Retardant: 0.3%;
Cinder powder: 10%;
Pottery sand: 8%.
Above-mentioned described pozzolanic activity material is selected from flyash; Described sulphate activation agent is selected from calcium sulfate; Described retardant is a carbohydrate, and described carbohydrate is a chitosan; Described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore.Above-mentioned described mud is selected from municipal sludge, and the chemical ingredients of said municipal sludge and weight percent thereof are:
SiO
2：55%～65%；Al
2O
3：12%～18%；
CaO：0.5%～1.5%；MgO：1.5%～2.5%；
Fe
2O
3: 6.5%～7.5%; Loss on ignition: 6.5%～7.5%;
All the other are impurity; The water cut of said municipal sludge can be 5%～12%.
Described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, the iron sulphide breeze.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 13
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 50%;
Pozzolanic activity material: 10%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.1%;
Cinder powder: 14.9%;
Pottery sand: 5%.
Above-mentioned described pozzolanic activity material is selected from slag powders, and described slag powders is the S95 slag powders; Described sulphate activation agent is selected from permanent white; Described retardant is a carbohydrate, and described carbohydrate is a polysaccharide; Described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore, described powdered iron ore is a ground hematite; Above-mentioned described mud is selected from municipal sludge, and the chemical ingredients of said municipal sludge and weight percent thereof are:
SiO
2：55%～65%；Al
2O
3：12%～18%；
CaO：0.5%～1.5%；MgO：1.5%～2.5%；
Fe
2O
3: 6.5%～7.5%; Loss on ignition: 6.5%～7.5%;
All the other are impurity; The water cut of said municipal sludge can be 12%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 14
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 30%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 10.8%;
Pottery sand: 9%.
Above-mentioned described pozzolanic activity material is selected from flyash and slag powders, and described slag powders is the S95 slag powders, and the weight ratio of described coal powder and S95 slag powders is 1:1; Described sulphate activation agent is selected from sal epsom; Described retardant is a carbohydrate, and described carbohydrate is a chitosan; Described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore, described powdered iron ore is a brown ocher; Above-mentioned described mud is selected from municipal sludge, and the chemical ingredients of said municipal sludge and weight percent thereof are:
SiO
2：55%～65%；Al
2O
3：12%～18%；
CaO：0.5%～1.5%；MgO：1.5%～2.5%；
Fe
2O
3: 6.5%～7.5%; Loss on ignition: 6.5%～7.5%;
All the other are impurity; The water cut of said municipal sludge can be 5%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 15
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 30%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 10.8%;
Pottery sand: 9%.
The specification of quality of above-mentioned described calcination-free desulfurized gypsum is (wt%):
Terra alba:>=95%; Mg0:＜0.10%; Al
2O
3:＜0.30%;
Fe
2O3:＜0.15%; Cl
-:＜0.01%; PH value: 5～8;
The adhesion water of described calcination-free desulfurized gypsum:＜10%;
Above-mentioned described pozzolanic activity material is selected from flyash and slag powders, and described slag powders is the S105 slag powders, and the weight ratio of described coal powder and S105 slag powders is 1:2; Described sulphate activation agent is selected from sal epsom; Described retardant is a carbohydrate, and described carbohydrate is a sucrose; Above-mentioned described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore, described powdered iron ore is a magnetite powder; Above-mentioned described mud is selected from municipal sludge, and the chemical ingredients of said municipal sludge and weight percent thereof are:
SiO
2：55%～65%；Al2O3：12%～18%；
CaO：0.5%～1.5%；MgO：1.5%～2.5%；
Fe
2O
3: 6.5%～7.5%; Loss on ignition: 6.5%～7.5%;
All the other are impurity; The water cut of said municipal sludge can be 5%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
Embodiment 16
The calcination-free desulfurized gypsum base haydite concrete perforated brick of present embodiment, mainly process by the raw material of following composition weight part:
Calcination-free desulfurized gypsum: 30%;
Pozzolanic activity material: 10%;
Haydite: 15%;
Sulphate activation agent: 5%;
Retardant: 0.2%;
Cinder powder: 30%;
Pottery sand: 9.8%.
The specification of quality of above-mentioned described calcination-free desulfurized gypsum is (wt%):
Terra alba:>=95%; Mg0:＜0.10%; Al
2O
3:＜0.30%;
Fe
2O
3:＜0.15%; Cl
-:＜0.01%; PH value: 5～8;
The adhesion water of described calcination-free desulfurized gypsum:＜10%;
Above-mentioned described pozzolanic activity material is selected from flyash and slag powders, and described slag powders is the S105 slag powders, and the weight ratio of described coal powder and S105 slag powders is 1:2; Described sulphate activation agent is selected from calcium bisulfate; Described retardant is a carbohydrate, and described carbohydrate is a glucose; Above-mentioned described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore, described powdered iron ore is a ground hematite; Above-mentioned described mud is selected from municipal sludge, and the chemical ingredients of said municipal sludge and weight percent thereof are:
SiO
2：55%～65%；Al
2O
3：12%～18%；
CaO：0.5%～1.5%；MgO：1.5%～2.5%；
Fe
2O
3: 6.5%～7.5%; Loss on ignition: 6.5%～7.5%;
All the other are impurity; The water cut of said municipal sludge can be 5%.
The preparation method that above-mentioned calcination-free desulfurized gypsum base haydite coagulates native perforated brick is consistent with the method described in the embodiment 1.
The calcination-free desulfurized gypsum base haydite that obtains in picked at random the foregoing description coagulates native perforated brick, and corresponding performance is tested, and test result shows that the performance perameter of described perforated brick is all in following scope:
Grade strength: Mu5.0; Density rating is 600～700 grades; Equivalent heat conductivity is :≤0.20W/mK; Porosity is: 30%～45%.Explain that perforated brick of the present invention has the strength property height, light weight, equivalent heat conductivity is less; Advantage with good heat insulating, and porosity is high, has good sound absorbing power; Sound-absorbing bandwidth, sound sucting band are 125Hz～4000Hz, and sound absorbing coefficient is high; Sound absorbing coefficient is 0.5～0.9, has soundproof effect efficiently thereby make.
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made detailed explanation and has quoted some specific embodiments as proof, to those skilled in the art, only otherwise leave that the spirit and scope of the present invention can be done various variations or correction is obvious.
Claims (10)
1. calcination-free desulfurized gypsum base haydite concrete perforated brick is characterized in that this perforated brick is mainly processed by the raw materials by weight percent of following composition:
Calcination-free desulfurized gypsum: 30%～50%; Pozzolanic activity material: 10%～30%; Haydite: 15%～30%; Sulphate activation agent: 5%～10%; Retardant: 0.1%～0.3%; Cinder powder: 10%～30%; Pottery sand: 5%～15%.
2. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 1 is characterized in that, described perforated brick is mainly processed by the raw material of the weight part of following composition:
Calcination-free desulfurized gypsum: 35%～45%; Pozzolanic activity material: 15%～20%; Haydite: 20%～25%; Sulphate activation agent: 7%～8%; Retardant: 0.2%～0.25%; Cinder powder: 15%～25%; Pottery sand: 8%～12%.
3. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 1 is characterized in that described pozzolanic activity material is selected from one or more in flyash, slag powders, the high-calcium fly ass.
4. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 1 is characterized in that described sulphate activation agent is selected from one or more in calcium sulfate, calcium bisulfate, sal epsom, the permanent white.
5. according to any described calcination-free desulfurized gypsum base haydite concrete perforated brick of claim 1-4, it is characterized in that described retardant is a carbohydrate.
6. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 5 is characterized in that described carbohydrate is selected from one or more in monose, polysaccharide, the oligose.
7. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 6 is characterized in that described carbohydrate is selected from one or more in glucose, fructose, sucrose, starch, the chitosan.
8. according to any described calcination-free desulfurized gypsum base haydite concrete perforated brick of claim 1-4, it is characterized in that described haydite is mainly processed by following composition weight part raw material:
Mud: 60%～80%; Shale: 5%～20%; Flyash: 5%～20%; Admixture: 1.0%～10%, described admixture is a powdered iron ore.
9. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 8 is characterized in that described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, the iron sulphide breeze.
10. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 5 is characterized in that the performance perameter of said perforated brick is:
Grade strength: Mu5.0; Density rating: 600～700 grades; Equivalent heat conductivity :≤0.20W/mK; Porosity: 30%～45%.
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| CN110696154A (en) * | 2019-09-29 | 2020-01-17 | 中原环资科技有限公司 | Process method for producing modified gypsum building block |
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