CN102643107B - Calcination-free desulfurized gypsum-based ceramsite concrete perforated brick - Google Patents

Calcination-free desulfurized gypsum-based ceramsite concrete perforated brick Download PDF

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CN102643107B
CN102643107B CN2012101541405A CN201210154140A CN102643107B CN 102643107 B CN102643107 B CN 102643107B CN 2012101541405 A CN2012101541405 A CN 2012101541405A CN 201210154140 A CN201210154140 A CN 201210154140A CN 102643107 B CN102643107 B CN 102643107B
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calcination
desulfurized gypsum
perforated brick
free desulfurized
haydite
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CN102643107A (en
Inventor
杨晓华
杨飞
杨益
朱国满
刘健
杨博
叶慈彪
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Zhejiang Fang Yuanxin materials Limited by Share Ltd
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ZHEJIANG FANGYUAN BUILDING MATERIALS TECHNOLOGY Co Ltd
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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

A kind of calcination-free desulfurized gypsum base haydite concrete perforated brick
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 the calcium sulfate by two crystal water forms.
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 in a large number sulfurous gas, serious environment pollution, therefore 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 adopted is Wet Limestone/plastering and equipment, although alleviated the pollution of sulfur dioxide in flue gas to atmosphere, but produced again a large amount of solid waste desulfurated plasters simultaneously, the problem that pollution and the land purchase of soil, water source, atmosphere are put.For addressing this problem, many enterprises comprise device fabrication, manufacturing enterprise, the desulfurated plaster of original state (two water desulfurated plasters) are become to β-semi-hydrated gypsum after super-dry, calcining, grinding processing, 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., does not need, through calcining, also to have reduced secondary pollution problems.
As Chinese patent application, (publication number: CN101891438A) disclose a kind of calcination-free desulfurized gypsum phosphogypsum self-insulation gypsum brick and production method thereof, this gypsum brick is comprised of following component and weight: original state two water desulfurated plasters: 60%~80%; 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 better 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, make also Shortcomings part of overall performance, as performances such as the density of gypsum brick, porositys, and due to this material, to form time of coagulation shorter, is unfavorable for depositing, thereby affects actual production.
Summary of the invention
The present invention is directed to the defect existed in above prior art; provide that a kind of lightweight, good heat insulating, intensity are high, the calcination-free desulfurized gypsum base haydite concrete perforated brick of reasonable ratio; also be to provide a kind of shelf-time for the preparation of perforated brick long, the raw material that is difficult for condensing.
The objective of the invention is to realize by following technical proposal: a kind of calcination-free desulfurized gypsum base haydite concrete perforated brick, described perforated brick is mainly made 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, the solid waste desulfurated plaster that application power plant produces, do not need through calcining, directly adopt calcination-free desulfurized gypsum, but because desulfurated plaster is the air-setting material, itself does not have self-hardening property, do not there is gelling yet, the present invention is by adding the pozzolanic activity material, the sulphate activation agent, under the activation of pozzolanic activity material and sulphate activation agent, carry out hydration reaction with water and generate gelling, make to become hydraulic cementing materials by air hardening cementitious 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, by adding cinder powder, haydite, pottery sand and retardant to improve the performance of material, slow down coagulation on the one hand, thus pilling up time is increased, can not cause the phenomenon of condensing because pilling up time is long; On the other hand, more be conducive to impact briquetting, hydrothermal curing generation calcination-free desulfurized gypsum base haydite concrete perforated brick.The present invention is also improved and is adjusted weight proportion by the composition to raw material, makes proportioning more reasonable, and the perforated brick obtained not only has advantages of that lightweight, good heat insulating, intensity are high, also has advantages of that heat insulation, sound insulation, fire prevention texts are good.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described perforated brick is mainly made 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 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%.Adopt above-mentioned preferred calcination-free desulfurized gypsum, more can improve between formed gelling in conjunction with compactness.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described pozzolanic activity material is selected from one or more in flyash, slag powders, high-calcium fly ass.Adopt above-mentioned pozzolanic activity material not only can improve the hydraulicity performance of desulfurated plaster, also make the industrial residues such as flyash, slag be fully utilized.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described sulphate activation agent is selected from one or more in calcium sulfate, sulfuric acid acid hydrogen calcium, sal epsom, barium sulfate.With the available technology adopting alkali-activator, compare, the present invention selects neutral vitriol as exciting agent, both improved the porosity of perforated brick, improve the sound absorbing power of product, thereby realize the effect of sound insulation, and selected sulphate activation agent is a kind of neutral raw material, also prevented the caustic corrosion phenomenon because adopting alkali-activator to exist, more be conducive to operation.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described retardant is carbohydrate.Have more oh group in glucide, can and calcination-free desulfurized gypsum between form hydrogen bond, be conducive to form jelling structure, and the material that described glucide can also form with calcination-free desulfurized gypsum play delayed coagulation.Be combined with 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, oligose.Described monose is as glucose, fructose etc.; Described polysaccharide is as chitosan, starch etc.; Described oligose is as sucrose etc.Above-mentioned carbohydrate Main Function is to play delayed coagulation, extends the setting time of gypsum, to reach, meets the perforated brick production of calcination-free desulfurized gypsum base haydite concrete and specification of quality.Simultaneously above-mentioned carbohydrate, as glucose, sucrose, chitosan etc. can be adsorbed in the gypsum particle surface, can extend time of coagulation equally.For the increase of carbohydrate volume, its slow setting time can corresponding prolongation.As further preferred, described carbohydrate is selected from one or more in sucrose, starch, chitosan.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, described haydite is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore.The main component of described powdered iron ore is iron cpd, by adding powdered iron ore, can improve the unit weight performance of haydite, can also improve the porosity of haydite, for the preparation of perforated brick of the present invention, can improve porosity, realizes efficient acoustically effective.As preferably, described mud is municipal sludge, and the chemical composition of described 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, the impurity such as NaO or organic matter.Adopt municipal sludge, can more directly solve the pollution problem of municipal sludge to environment, realize " turning waste into wealth ".The composition of the chemical composition of above-mentioned municipal sludge and clay, shale etc. is more approaching, can better replace and adopt shale, clay etc. for the existing problem of main raw material, has well solved again the problems such as environmental pollution.The water content of described municipal sludge can be 5%~12%, and described water content is mass water content.Control water content, can enhance productivity, also help the formability of haydite.As preferably, described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, iron sulphide breeze.
In above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick, the performance perameter of described 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 described 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, can further improve the strength property of perforated brick.Further preferred, the performance perameter of described 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%.As further preferred, described porosity is 35%~40%.
Above-mentioned calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention, can adopt the method for this area routine to prepare, as preferably, the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite prepares by the following method, the method comprises: in proportion by calcination-free desulfurized gypsum, pozzolanic activity material and sulphate activation agent add in mixing machine and mix, and then add other raw materials and appropriate water, stir, after mixing, pass through forming machine, impact briquetting, naturally quiet putting, again under normal pressure, under the condition that is 50 ℃~80 ℃ in temperature, hydrothermal curing, obtain calcination-free desulfurized gypsum base haydite concrete perforated brick.
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, have strength property high, light weight, and good heat insulating, and porosity is high, and sound absorbing power is strong, has advantages of that soundproof effect is good, also has advantages of heat insulation, water-tolerant.
2. calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention; it is more reasonable that raw material used forms; each composition complements each other between forming; and raw material of the present invention does not need to adopt certain corrosive alkali-activator; more be conducive to the actual production operation, simultaneously, the present invention selects glucide as retardant; make structure form the interphase interaction better effects if, the intensity of the product perforated brick obtained is also better.
3. calcination-free desulfurized gypsum base haydite concrete perforated brick of the present invention, raw material used is easy to get, and cost is low, more is conducive to industrial applications.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail, but the present invention is not limited to these embodiment.
Embodiment 1
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is:
At first press above-mentioned weight percent by calcination-free desulfurized gypsum, pozzolanic activity material and sulphate activation agent add in mixing machine and mix, after pulverizing, the haydite that adds again above-mentioned weight percent, retardant, pottery sand and cinder powder, add in mixing machine and mix again, pulverize, obtain compound, during use, above-mentioned compound is mixed with appropriate water, after being uniformly mixed, pass through forming machine, after impact briquetting, naturally quiet putting 10~20 hours, then, again at normal pressure, under the condition that temperature is 50 ℃~80 ℃, hydrothermal curing 8~18 hours, obtain calcination-free desulfurized gypsum base haydite concrete perforated brick.
Embodiment 2
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 3
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 4
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 5
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 6
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 7
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 8
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 9
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 10
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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%.
Pozzolanic activity material described above is selected from one or more in flyash, slag powders, high-calcium fly ass; Described sulphate activation agent is selected from one or more in calcium sulfate, sulfuric acid acid hydrogen calcium, sal epsom, barium sulfate; Described retardant is carbohydrate; Described haydite is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore.
The preparation method of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 11
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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%.
Pozzolanic activity material described above is selected from flyash; Described sulphate activation agent is selected from calcium sulfate; Described retardant is carbohydrate, and described carbohydrate is selected from one or more in monose, polysaccharide, oligose; Described haydite is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore.Described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, iron sulphide breeze.
The preparation method of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 12
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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%.
Pozzolanic activity material described above is selected from flyash; Described sulphate activation agent is selected from calcium sulfate; Described retardant is carbohydrate, and described carbohydrate is chitosan; Described haydite is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore.Mud described above is selected from municipal sludge, and the chemical composition of described 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 content of described municipal sludge can be 5%~12%.
Described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, iron sulphide breeze.
The preparation method of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 13
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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%.
Pozzolanic activity material described above is selected from slag powders, and described slag powders is the S95 slag powders; Described sulphate activation agent is selected from barium sulfate; Described retardant is carbohydrate, and described carbohydrate is polysaccharide; Described haydite is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore, described powdered iron ore is ground hematite; Mud described above is selected from municipal sludge, and the chemical composition of described 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 content of described municipal sludge can be 12%.
The preparation method of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 14
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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%.
Pozzolanic activity material described above 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 carbohydrate, and described carbohydrate is chitosan; Described haydite is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore, described powdered iron ore is brown ocher; Mud described above is selected from municipal sludge, and the chemical composition of described 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 content of described municipal sludge can be 5%.
The preparation method of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 15
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 calcination-free desulfurized gypsum described above 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%;
Pozzolanic activity material described above 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 carbohydrate, and described carbohydrate is sucrose; Haydite described above is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore, described powdered iron ore is magnetite powder; Mud described above is selected from municipal sludge, and the chemical composition of described 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 content of described municipal sludge can be 5%.
The preparation method of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Embodiment 16
The calcination-free desulfurized gypsum base haydite concrete perforated brick of the present embodiment, mainly by the raw material of following composition weight part, made:
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 calcination-free desulfurized gypsum described above 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%;
Pozzolanic activity material described above 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 carbohydrate, and described carbohydrate is glucose; Haydite described above is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore, described powdered iron ore is ground hematite; Mud described above is selected from municipal sludge, and the chemical composition of described 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 content of described municipal sludge can be 5%.
The preparation method of the solidifying native perforated brick of above-mentioned calcination-free desulfurized gypsum base haydite is consistent with the method described in embodiment 1.
Choose at random the solidifying native perforated brick of the calcination-free desulfurized gypsum base haydite that obtains in above-described embodiment, corresponding performance is tested, test result shows, 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%.Illustrate that perforated brick of the present invention has strength property high, light weight, equivalent heat conductivity is less, has advantages of good heat insulating, and porosity is high, there is good sound absorbing power, the sound-absorbing bandwidth, sound sucting band is 125Hz~4000Hz, sound absorbing coefficient is high, sound absorbing coefficient is 0.5~0.9, thereby makes to have efficient soundproof effect.
Specific embodiment described in the present invention is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement 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 a detailed description and has quoted as proof some specific embodiments, to those skilled in the art, only otherwise it is obvious leaving that the spirit and scope of the present invention can make various changes or revise.

Claims (8)

1. a calcination-free desulfurized gypsum base haydite concrete perforated brick, is characterized in that, this perforated brick is mainly made by the raw material of the 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%;
Described sulphate activation agent is selected from one or more in calcium sulfate, calcium bisulfate, sal epsom, barium sulfate;
Described haydite is mainly made by following composition weight part raw material:
Mud: 60%~80%; Shale: 5%~20%; Flyash: 5%~20%; Admixture: 1.0%~10%, described admixture is powdered iron ore.
2. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 1, is characterized in that, described perforated brick is mainly made 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, high-calcium fly ass.
4. according to the described calcination-free desulfurized gypsum base of claim 1-3 any one haydite concrete perforated brick, it is characterized in that, described retardant is carbohydrate.
5. calcination-free desulfurized gypsum base haydite concrete perforated brick according to claim 4, is characterized in that, described carbohydrate is selected from one or more in monose, polysaccharide, oligose.
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 glucose, fructose, sucrose, starch, chitosan.
7. according to the described calcination-free desulfurized gypsum base of claim 1-3 any one haydite concrete perforated brick, it is characterized in that, described powdered iron ore is selected from one or more in magnetite powder, ground hematite, brown ocher, iron sulphide breeze.
8. according to the described calcination-free desulfurized gypsum base of claim 1-3 any one haydite concrete perforated brick, it is characterized in that, 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%.
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