CN104230290A - Black-body cement capable of accumulating heat and preparation method thereof - Google Patents
Black-body cement capable of accumulating heat and preparation method thereof Download PDFInfo
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Abstract
The invention discloses black-body cement capable of accumulating heat and a preparation method thereof. The preparation method is characterized by comprising the following steps: taking raw materials including the following components in percentage by mass: 75.0-85.0% of a Portland cement clinker, 2.4-4.0% of dihydrate gypsum, 2.0-10.0% of a black coloring agent and 5.0-15.0% of cordierite powder; putting the raw materials into a ball mill, and ball-milling by adopting a dry-process ball-milling technique, wherein the rotating speed of a milling cylinder of the ball mill is 43-47r/min, and the residence time of the raw materials in the ball mill is 29-31min; and performing ball-milling and mixing on the raw materials to prepare the black-body cement capable of accumulating heat. The prepared black-body cement disclosed by the invention is high in color blackness, high in black body radiation coefficient and large in heat accumulation coefficient, can be used as a material for large-scale heat accumulation engineering after being cast into large-volume block-shaped solids, and is of a cement material with good heat accumulation performance, heat radiation performance and heat diffusion performance.
Description
Technical field
The invention belongs to a kind of cement and preparation method thereof, relate to a kind of can the black matrix cement and preparation method thereof of accumulation of heat.This black matrix cement carries out proportioning by a certain percentage by Portland clinker, dihydrate gypsum, tinting material and infrared radiant material, obtained by ball mill grinding, this cement color blackness is high, thermal radiation and thermodiffusion performance is good, heat storage coefficient is large, water after building up large volume blocks of solid, can be used as large-scale accumulation of heat engineering material, the heat accumulating etc. of such as solar heat power generation system.
Background technology
Energy problem is the key subjects that world today's human society faces, in China, along with the development of national economy, energy safeguard problem becomes large restraining factors of China's Economic development, therefore country has put into effect a large amount of encouragement policieies, encourages the utilization strengthening renewable energy source.In a lot of industry and covil construction and solar power system, because the wheel at daytime and night turns, often there is the difference between energy supply and demand, cause a large amount of wastes of Energy harvesting.One of effective way addressed this problem is exactly adopt heat-storing material.
Heat-storing material: be exactly a kind of new chemical material that can store heat energy and release heat energy, the thermal energy storage unnecessary peak time is got up, in operational phase at heat memory phase by it, discharged, for heating, heat supply etc. by the heat energy of heat-storing material by storage.Storage like this and dispose procedure circulation, realize heat energy incoordination over time and space, reach the efficiency utilization of the energy and energy-conservation object.Sensible heat accumulation of heat not only uses principle simple, lower cost for material, and has good feasibility.In prior art, modal sensible heat heat storage medium mainly contains solid concrete, Castable ceramics, and liquid has mineral oil, and fused salt etc.The accumulation of heat of oils heat storage medium, heat release are convenient and swift, but long-term behaviour is unstable, and inflammable, and use cost is higher; Composed of lava heat storage medium specific heat is higher, stable chemical nature, but most of fused salt fusing point is higher; need additionally to heat to keep its liquid phase state between the long-time dormancy of system at night or down period; sometimes liquid-phase fused salts is local-crystalized, occurs chromatography phenomenon, affects heat exchanger effectiveness.Concrete and Castable ceramics are a kind of sensible heat heat storage mediums preferably, and its specific heat capacity is higher, and units of heat storage cost is low, builds and safeguards easily.To sensible heat heat storage medium, the material selecting specific heat capacity large is a kind of feasible method improving heat storage capacity.If using concrete as sensible heat heat storage medium, the unsuitable aluminium acid salt cement of gelling material, because the heat storing of aluminate cement is not good, if unit weight is 1950kg/m
3aluminate cement starches sample only, specific heat capacity 0.11kJ (kgK)
-1, thermal conductivity 1.42W (mK)
-1, heat storage coefficient is only 4.63W (m
2k)
-1.
Silicate cement density range is at 3000 ~ 3500kg/m
3, as gelling material, after maintenance certain length of time, unit weight is 2079kg/m
3, specific heat capacity is 3.12kJ (kgK)
-1, thermal conductivity is 0.67W (mK)
-1, heat storage coefficient 17.76W (m
2k)
-1.As the one in dominant heat-storing material, because heat conductivility is inadequate, in heat accumulation and exothermic process, inside and the surperficial Temperature Difference Ratio of block are larger.Normally during heat accumulation, surface temperature is very high, and internal temperature is but very low; When heat release, surperficial heat is released very soon, and institute's heat accumulation can be difficult to supply actual needs.
Black matrix cement proposes according to this fence-Boltzmann law of making a mistake, and namely along with the coefficient of blackness of material improves, its radiation and receptivity strengthen all thereupon.Black matrix cement, compared with general purpose portland cement, absorbs thermal characteristics daytime stronger, and night, distribute heat was larger, had excellent heat storage performance.The area that particularly day and night temperature is larger, is used for engineering by black matrix cement, takes good hot memory technology and system design, effectively can reduce building energy consumption, improves building energy conservation heat insulation efficiency, saves the input of mass energy resource and lagging material.
Chinese patent application CN201210398760.3 discloses " high compact accumulation of heat concrete and preparation method thereof ", provide one and prepare high compact accumulation of heat concrete with aluminosulfate cement, slag, basalt, graphite, slag powders, water reducer, by adding water reducer, concrete prepared by aluminosulfate cement is more closely knit, improve heat storage coefficient, solve the shortcoming that the heat storage coefficient of cement-based material is not high, and solve large volume and prepare a heat storage difficult problem with high costs, but this heat storage is due to chemical constitution reason, be difficult to be applied to high-temperature heat accumulation.
Summary of the invention
Object of the present invention is intended to overcome deficiency of the prior art, overcome and existingly utilize in natural sunlight heat-accumulating process, in sensible heat heat-storage medium, ceramic heat storage body volume is difficult to do greatly, the problem of store heat deficiency, solve daytime insolation heat accumulation, the Material selec-tion of long-time heat release at night and a difficult problem for preparation in Solar use process.There is provided a kind of and carry out proportioning by a certain percentage by Portland clinker, dihydrate gypsum, black colorant and cordierite powder, what obtained by ball mill grinding can the black matrix cement and preparation method thereof of accumulation of heat, black matrix cement color blackness of the present invention is high, thermal conductivity is good, heat storage coefficient is large, water after building up large volume blocks of solid, can be used as large-scale accumulation of heat engineering material.
Content of the present invention is: a kind of can the black matrix cement of accumulation of heat, it is characterized in that: by percent mass, when component is 75.0 ~ 85.0% Portland clinkers, the starting material of 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders to mix through ball milling and form.
In content of the present invention: the primary chemical composition of described Portland clinker and mass percent are: calcium oxide 62 ~ 67%, silicon oxide 20 ~ 25%, aluminum oxide 4 ~ 7%, ferric oxide 2.5 ~ 6.0%, other components 2 ~ 5%; Such as: calcium oxide 62.25%, silicon oxide 24.82%, aluminum oxide 4.38%, ferric oxide 5.22%, magnesium oxide 1.39 and other 1.94%.
In content of the present invention: described black colorant can be the mixture of one or more mineral dyes;
Described black colorant is preferably the mixture of any one or more in the powders such as ferrite powder, graphite, copper-chrome black and ferrimanganic be black.This inorganic black pigments thermally-stabilised good, chemical stability is good.
In content of the present invention: described trichroite is a kind of natural minerals, being a kind of silicate minerals, there is vitreous luster, more far infrared rays can be released when heating; The primary chemical formula of described trichroite is 2MgO2Al
2o
35SiO
2, this oxide compound composition and percent mass ratio are: MgO13.78%, Al
2o
334.86%, SiO
251.36%; The primary chemical composition of described trichroite and mass percent are: magnesium oxide 13.6 ~ 16.6%, aluminum oxide 32.2 ~ 34.9%, silicon oxide 49.4 ~ 51.6%.
Another content of the present invention is: a kind of can the preparation method of black matrix cement of accumulation of heat, it is characterized in that step is:
A, batching: get each starting material by the component of 75.0 ~ 85.0% Portland clinkers, 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders and percent mass proportioning;
B, ball milling: adopt dry ball milling technique, put into by starting material in ball mill, ball mill mill tube rotating speed is 43 ~ 47r/min, the starting material residence time 29 ~ 31min in ball mill, starting material after ball milling mixing, namely obtained can the black matrix cement of accumulation of heat.
The model of described ball mill can be SM-500 (mill tube internal diameter and length:
grinding element loading capacity: 100kg, mill feed material loading capacity :≤5kg).
In another content of the present invention: the granularity of each starting material described in step a (i.e. mill feed material) is <7mm preferably.
In another content of the present invention: the primary chemical composition of Portland clinker described in step a and mass percent are: calcium oxide 62 ~ 67%, silicon oxide 20 ~ 25%, aluminum oxide 4 ~ 7%, ferric oxide 2.5 ~ 6.0%, other components 2 ~ 5%; Such as: calcium oxide 62.25%, silicon oxide 24.82%, aluminum oxide 4.38%, ferric oxide 5.22%, magnesium oxide 1.39 and other 1.94%.
In another content of the present invention: black colorant described in step a is preferably the mixture of any one or more in the powders such as ferrite powder, graphite, copper-chrome black and ferrimanganic be black.This inorganic black pigments thermally-stabilised good, chemical stability is good.
In another content of the present invention: trichroite described in step a is a kind of natural minerals, being a kind of silicate minerals, there is vitreous luster, more far infrared rays can be released when heating; The primary chemical formula of described trichroite is 2MgO2Al
2o
35SiO
2, this oxide compound composition and percent mass ratio are: MgO13.78%, Al
2o
334.86%, SiO
251.36%; The primary chemical composition of described trichroite and mass percent are: magnesium oxide 13.6 ~ 16.6%, aluminum oxide 32.2 ~ 34.9%, silicon oxide 49.4 ~ 51.6%.
Conditioning agent time of coagulation of bonding component in described black matrix cement constitutive material, i.e. dihydrate gypsum, containing two crystal water, wherein SO in its chemical formula
3mass percentage content is greater than 42.6%.
The black matrix cement that the present invention obtains, adds appropriate water, stirs, and is built shaping and through natural curing by mould, then can make heat storage performance and the good cement material of heat conductivility.Thermal conductivity 0.82 ± the 0.1W (mK) of clean slurry obtained thus
-1, heat storage coefficient 18.15 ± 0.5W (m
2k)
-1.After clean slurry solidification, by vacuum radiation coefficient method of masurement, its blackbody coefficient 0.60 ~ 0.72.
The vacuum blackbody coefficient measuring method of described black matrix cement, vacuum tightness is 0.96 ~ 0.98, measures temperature 70 ± 2 DEG C.
The heat storage coefficient of black matrix cement prepared by the present invention, calculation formula is:
S＝0.51·λ·α·ρ
In formula: s---heat storage coefficient [W (m
2k)
-1]
λ---thermal conductivity [W (mK)
-1]
α---thermal diffusivity [m
2/ h]
Mean apparent density [the kg/m of ρ---three pieces of test specimens
3]
Compared with prior art, the present invention has features and beneficial effect:
(1) the present invention is adopted, in the starting material composition of black matrix cement, Portland clinker is as the source of cement products intensity, dihydrate gypsum is the adjustable solidification agent after Portland clinker grinding, black colorant Main Function is strengthen the material after this cement solidification to the specific absorption of sunlight, cordierite powder can release the auxiliary material of far-infrared ray material as a kind of being heated, and Main Function is the transmission to heat strengthening the block after originally theing cement solidifies;
(2) the present invention adopts inorganic black dyestuff (i.e. black colorant), due to the coefficient of blackness more than 0.95 of dyestuff, by combining with making high infrared radiation material, achieves quick conduction and the storage of heat; Simultaneously owing to adding the trichroite (1.50 × 10 of low thermal coefficient of expansion
-7dEG C
-1), make the thermal expansivity of gelling system from 17.1 × 10
-6dEG C
-1drop to 6.4 × 10
-6dEG C
-1, thus with the low-expansion coefficients (3.5 × 10 such as Wingdale
-6dEG C
-1) aggregate there is better thermal strain coupling, thus can at high temperature keep stable heat storage capacity and radiation capacity, the block after simultaneously making cement build at a relatively high temperature can not the decomposition of bursting apart because differential expansion amount is too large;
(3) adopt the present invention, obtained black matrix cement, adds appropriate water, stirs, and is built shaping and through natural curing by mould, then can make heat storage performance and the good cement material of heat conductivility; Thermal conductivity 0.82 ± the 0.1W (mK) of clean slurry obtained thus
-1, heat storage coefficient 18.15 ± 0.5W (m
2k)
-1; After clean slurry solidification, by vacuum radiation coefficient method of masurement, its blackbody coefficient 0.60 ~ 0.72;
(4) adopt the present invention, the specific surface area of obtained black matrix cement is at 350 ± 50m
2about/kg, consumptive use of water normal consistence 28% ± 1%, presetting period 236 ± 15min, final setting time 298 ± 15min, 3 days ultimate compression strength 28.7 ± 5MPa, 28 days ultimate compression strength 44.6 ± 5MPa, stability is qualified; Obtained black matrix cement color blackness is high, and blackbody coefficient is high, and heat storage coefficient is large, waters after building up large volume blocks of solid, can be used as large-scale accumulation of heat engineering material; That there is some strength, good heat conductivity, heat storage that heat storage coefficient is large; Heat storage performance, thermal radiation, thermodiffusion cement material of good performance;
(5) the present invention adopts Portland clinker, common tune gel material and natural mineral material, and cost is low, starting material are easy to get, and are convenient to popularization; Preparation technology is simple, and operation is easy, easily operates; Prepared black matrix cement, the physicalies such as fineness are close with Portland cement, identical with use habit, are therefore easy to construction, practical.
Embodiment
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; some nonessential improvement and adjustment that person skilled in art makes the present invention according to the content of the invention described above, still belong to protection scope of the present invention.
Embodiment 1:
A kind of can the black matrix cement and preparation method thereof of accumulation of heat:
A, black matrix cement ingredient: starting material Portland clinker, dihydrate gypsum, ferrite powder, trichroite powder are measured according to mass percent Portland clinker 75%, dihydrate gypsum 2.4%, ferrite powder 10%, trichroite powder 12.6%.
B, by each starting material according to metering carry out grinding than adding in ball mill with the speed of 45r/min.The specific surface area of obtained cement is 3560m
2/ kg.
C, by above-mentioned proportion scheme and grinding process, time of coagulation of obtained black matrix cement is normal, wherein presetting period 243min, final setting time 294min, consumptive use of water normal consistence about 28%, 3 days ultimate compression strength 27.3MPa, 28 days intensity 43.2MPa, stability is qualified.
The clean slurry of black matrix cement prepared by D, above-mentioned technique.After requiring sample preparation according to vacuum blackbody coefficient measuring method, record the blackbody coefficient 0.64 of the rear block of solidification; After the sample preparation of heat storage coefficient measuring method, the heat storage coefficient recording sample is 17.96W (m
2k)
-1.
Embodiment 2:
A, black matrix cement ingredient: starting material Portland clinker, dihydrate gypsum, ferrite powder, trichroite powder are measured according to mass percent Portland clinker 80%, dihydrate gypsum 3%, ferrite powder 8%, trichroite powder 9%.
B, by each starting material according to metering carry out grinding than adding ball mill with the speed of 45r/min.The specific surface area of obtained cement is 3650m
2/ kg.
C, by above-mentioned proportion scheme and grinding process, time of coagulation of obtained black matrix cement is normal, and consumptive use of water normal consistence about 28%, presetting period 238min, final setting time 274min, 3 days intensity 28.2MPa, 28 days intensity 44.3MPa, stability is qualified.
The clean slurry of black matrix cement prepared by D, above-mentioned technique.After requiring sample preparation according to vacuum blackbody coefficient measuring method, record the blackbody coefficient 0.69 of the rear block of solidification; After the sample preparation of heat storage coefficient measuring method, the heat storage coefficient recording sample is 18.24W (m
2k)
-1.
Embodiment 3:
A, black matrix cement ingredient: starting material Portland clinker, dihydrate gypsum, Graphite Powder 99, trichroite powder are measured according to mass percent Portland clinker 80%, dihydrate gypsum 3%, ferrite powder 3%, trichroite powder 14%.
B, by each starting material according to metering carry out grinding than adding ball mill with the speed of 45r/min.The specific surface area of obtained cement is 3680m
2/ kg.
C, by above-mentioned proportion scheme and grinding process, time of coagulation of obtained black matrix cement is normal, and consumptive use of water normal consistence about 29%, presetting period 247min, final setting time 286min, 3 days intensity 29.2MPa, 28 days intensity 45.4MPa, stability is qualified.
The clean slurry of black matrix cement prepared by D, above-mentioned technique.After requiring sample preparation according to vacuum blackbody coefficient measuring method, record the blackbody coefficient 0.72 of the rear block of solidification; After the sample preparation of heat storage coefficient measuring method, the heat storage coefficient recording sample is 18.45W (m
2k)
-1.
Embodiment 4:
A, black matrix cement ingredient: black to starting material Portland clinker, dihydrate gypsum, ferrochrome, trichroite powder are measured according to mass percent Portland clinker 75%, dihydrate gypsum 2.5%, ferrite powder 5%, trichroite powder 17.5%.
B, by each starting material according to metering carry out grinding than adding ball mill with the speed of 45r/min.The specific surface area of obtained cement is 3720m
2/ kg.
C, by above-mentioned proportion scheme and grinding process, time of coagulation of obtained black matrix cement is normal, and consumptive use of water normal consistence about 28%, presetting period 236min, final setting time 278min, 3 days intensity 28.1MPa, 28 days intensity 44.6MPa, stability is qualified.
The clean slurry of black matrix cement prepared by D, above-mentioned technique.After requiring sample preparation according to vacuum blackbody coefficient measuring method, record the blackbody coefficient 0.68 of the rear block of solidification; After the sample preparation of heat storage coefficient measuring method, the heat storage coefficient recording sample is 18.14W (m
2k)
-1.
Embodiment 5:
Can the black matrix cement of accumulation of heat, by percent mass, when component is 80% Portland clinker, the starting material of 3.2% dihydrate gypsum, 6.8% black colorant and 10% cordierite powder to mix through ball milling and form.
Embodiment 6:
Can the black matrix cement of accumulation of heat, by percent mass, when component is 85.0% Portland clinker, the starting material of 4.0% dihydrate gypsum, 5.0% black colorant, 6.0% cordierite powder to mix through ball milling and form.
Embodiment 7 ~ 13:
Can the black matrix cement of accumulation of heat, by percent mass, when component is 75.0 ~ 85.0% Portland clinkers, the starting material of 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders to mix through ball milling and form; In each embodiment, the concrete mass percent consumption of each feed composition sees the following form:
Embodiment 14:
Can the black matrix cement of accumulation of heat, by percent mass, when component is 84.2% Portland clinker, the starting material of 2.8% dihydrate gypsum, 8.0% black colorant and 5.0% cordierite powder to mix through ball milling and form.
Embodiment 15:
Can the black matrix cement of accumulation of heat, by percent mass, when component is 84.4% Portland clinker, the starting material of 2.6% dihydrate gypsum, 6.0% black colorant and 7.0% cordierite powder to mix through ball milling and form.
Embodiment 16:
Can the black matrix cement of accumulation of heat, by percent mass, when component is 77.0% Portland clinker, the starting material of 3.0% dihydrate gypsum, 5.0% black colorant and 15.0% cordierite powder to mix through ball milling and form.
Embodiment 17:
Can the preparation method of black matrix cement of accumulation of heat, step is:
A, batching: get each starting material by the component of 75.0 ~ 85.0% Portland clinkers, 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders and percent mass proportioning; The concrete mass percent consumption of each feed composition is with arbitrary in embodiment 5 ~ 16;
B, ball milling: adopt dry ball milling technique, put into by starting material in ball mill, ball mill mill tube rotating speed is 43r/min, starting material residence time 31min in ball mill, starting material after ball milling mixing, namely obtained can the black matrix cement of accumulation of heat.
Embodiment 18:
Can the preparation method of black matrix cement of accumulation of heat, step is:
A, batching: get each starting material by the component of 75.0 ~ 85.0% Portland clinkers, 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders and percent mass proportioning; The concrete mass percent consumption of each feed composition is with arbitrary in embodiment 5 ~ 16;
B, ball milling: adopt dry ball milling technique, put into by starting material in ball mill, ball mill mill tube rotating speed is 47r/min, starting material residence time 29min in ball mill, starting material after ball milling mixing, namely obtained can the black matrix cement of accumulation of heat.
Embodiment 19:
Can the preparation method of black matrix cement of accumulation of heat, step is:
A, batching: get each starting material by the component of 75.0 ~ 85.0% Portland clinkers, 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders and percent mass proportioning; The concrete mass percent consumption of each feed composition is with arbitrary in embodiment 5 ~ 16;
B, ball milling: adopt dry ball milling technique, put into by starting material in ball mill, ball mill mill tube rotating speed is 45r/min, starting material residence time 30min in ball mill, starting material after ball milling mixing, namely obtained can the black matrix cement of accumulation of heat.
Embodiment 20:
Can the preparation method of black matrix cement of accumulation of heat, step is:
A, batching: get each starting material by the component of 75.0 ~ 85.0% Portland clinkers, 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders and percent mass proportioning; The concrete mass percent consumption of each feed composition is with arbitrary in embodiment 5 ~ 16;
B, ball milling: adopt dry ball milling technique, put into by starting material in ball mill, ball mill mill tube rotating speed is 44r/min, starting material residence time 30min in ball mill, starting material after ball milling mixing, namely obtained can the black matrix cement of accumulation of heat.
Embodiment 21:
Can the preparation method of black matrix cement of accumulation of heat, step is:
A, batching: get each starting material by the component of 75.0 ~ 85.0% Portland clinkers, 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders and percent mass proportioning; The concrete mass percent consumption of each feed composition is with arbitrary in embodiment 5 ~ 16;
B, ball milling: adopt dry ball milling technique, put into by starting material in ball mill, ball mill mill tube rotating speed is 46r/min, starting material residence time 30min in ball mill, starting material after ball milling mixing, namely obtained can the black matrix cement of accumulation of heat.
In above-described embodiment 17 ~ 21: the model of described ball mill can be SM-500 (mill tube internal diameter and length:
grinding element loading capacity: 100kg, mill feed material loading capacity :≤5kg); Also can be other ball mill of the prior art.
In above-described embodiment 17 ~ 21: the granularity of each starting material described in step a (i.e. mill feed material) is <7mm preferably.
In above-described embodiment: the primary chemical composition of described Portland clinker and mass percent are: calcium oxide 62 ~ 67%, silicon oxide 20 ~ 25%, aluminum oxide 4 ~ 7%, ferric oxide 2.5 ~ 6.0%, other components 2 ~ 5%; Such as: calcium oxide 62.25%, silicon oxide 24.82%, aluminum oxide 4.38%, ferric oxide 5.22%, magnesium oxide 1.39 and other 1.94%.
In above-described embodiment: described black colorant is the mixture of one or more mineral dyes, be preferably the mixture of any one or more in the powders such as ferrite powder, graphite, copper-chrome black and ferrimanganic be black.This inorganic black pigments thermally-stabilised good, chemical stability is good.
In above-described embodiment: described trichroite is a kind of natural minerals, being a kind of silicate minerals, there is vitreous luster, more far infrared rays can be released when heating; The primary chemical formula of described trichroite is 2MgO2Al
2o
35SiO
2, this oxide compound composition and percent mass ratio are: MgO13.78%, Al
2o
334.86%, SiO
251.36%; The primary chemical composition of described trichroite and mass percent are: magnesium oxide 13.6 ~ 16.6%, aluminum oxide 32.2 ~ 34.9%, silicon oxide 49.4 ~ 51.6%.
In above-described embodiment: conditioning agent time of coagulation of bonding component in described black matrix cement constitutive material, i.e. dihydrate gypsum, containing two crystal water, wherein SO in its chemical formula
3mass percentage content is greater than 42.6%.
In above-described embodiment: each raw material adopted is commercially available prod.In the percentage adopted, do not indicate especially, be quality (weight) percentage or well known to a person skilled in the art percentage; Described quality (weight) part can be all gram or kilogram.
The concrete same prior art of technology contents described in content of the present invention and above-described embodiment.
The invention is not restricted to above-described embodiment, all can implement described in content of the present invention and there is described good result.
Claims (10)
1. can the black matrix cement of accumulation of heat, it is characterized in that: by percent mass, when component is 75.0 ~ 85.0% Portland clinkers, the starting material of 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders to mix through ball milling and form.
2., by can the black matrix cement of accumulation of heat described in claim 1, it is characterized in that: the primary chemical composition of described Portland clinker and mass percent are: calcium oxide 62 ~ 67%, silicon oxide 20 ~ 25%, aluminum oxide 4 ~ 7%, ferric oxide 2.5 ~ 6.0%, other components 2 ~ 5%.
3., by can the black matrix cement of accumulation of heat described in claim 1, it is characterized in that: described black colorant is the mixture of one or more mineral dyes.
4. by can the black matrix cement of accumulation of heat described in claim 3, it is characterized in that: described black colorant is the mixture of any one or more in the powders such as ferrite powder, graphite, copper-chrome black and ferrimanganic be black.
5., by can the black matrix cement of accumulation of heat described in claim 1, it is characterized in that: the primary chemical composition of described trichroite and mass percent are: magnesium oxide 13.6 ~ 16.6%, aluminum oxide 32.2 ~ 34.9%, silicon oxide 49.4 ~ 51.6%.
6. can the preparation method of black matrix cement of accumulation of heat, it is characterized in that step is:
A, batching: get each starting material by the component of 75.0 ~ 85.0% Portland clinkers, 2.4 ~ 4.0% dihydrate gypsums, 2.0 ~ 10.0% black colorants and 5.0 ~ 15.0% cordierite powders and percent mass proportioning;
B, ball milling: starting material are put in ball mill, ball mill mill tube rotating speed is 43 ~ 47r/min, the starting material residence time 29 ~ 31min in ball mill, starting material after ball milling mixing, namely obtained can the black matrix cement of accumulation of heat.
7., by can the preparation method of black matrix cement of accumulation of heat described in claim 6, it is characterized in that: each raw-material granularity <7mm described in step a.
8., by can the preparation method of black matrix cement of accumulation of heat described in claim 6 or 7, it is characterized in that: the primary chemical composition of Portland clinker described in step a and mass percent are: calcium oxide 62 ~ 67%, silicon oxide 20 ~ 25%, aluminum oxide 4 ~ 7%, ferric oxide 2.5 ~ 6.0%, other components 2 ~ 5%.
9. by can the preparation method of black matrix cement of accumulation of heat described in claim 6 or 7, it is characterized in that: black colorant described in step a is the mixture of any one or more in the powders such as ferrite powder, graphite, copper-chrome black and ferrimanganic be black.
10., by can the preparation method of black matrix cement of accumulation of heat described in claim 6 or 7, it is characterized in that: the primary chemical composition of described trichroite and mass percent are: magnesium oxide 13.6 ~ 16.6%, aluminum oxide 32.2 ~ 34.9%, silicon oxide 49.4 ~ 51.6%.
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