CN1179404A - Additive for firing brick and tile building materials - Google Patents
Additive for firing brick and tile building materials Download PDFInfo
- Publication number
- CN1179404A CN1179404A CN 97107442 CN97107442A CN1179404A CN 1179404 A CN1179404 A CN 1179404A CN 97107442 CN97107442 CN 97107442 CN 97107442 A CN97107442 A CN 97107442A CN 1179404 A CN1179404 A CN 1179404A
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- CN
- China
- Prior art keywords
- additive
- nitrate
- alkaline
- brick
- phosphorus compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000654 additive Substances 0.000 title claims abstract description 57
- 230000000996 additive effect Effects 0.000 title claims abstract description 56
- 239000004566 building material Substances 0.000 title claims abstract description 8
- 238000010304 firing Methods 0.000 title claims description 7
- 239000011449 brick Substances 0.000 title abstract description 18
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 15
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011574 phosphorus Substances 0.000 claims abstract description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 12
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 10
- 239000006103 coloring component Substances 0.000 claims abstract description 9
- -1 phosphorus compound Chemical class 0.000 claims abstract description 9
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 22
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 235000010333 potassium nitrate Nutrition 0.000 claims description 11
- 239000004323 potassium nitrate Substances 0.000 claims description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 10
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims description 9
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 9
- 229910052728 basic metal Inorganic materials 0.000 claims description 9
- 150000003818 basic metals Chemical class 0.000 claims description 9
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 8
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 7
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 7
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 7
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 4
- 235000010344 sodium nitrate Nutrition 0.000 claims description 4
- 239000004317 sodium nitrate Substances 0.000 claims description 4
- 229940001516 sodium nitrate Drugs 0.000 claims description 4
- 239000002367 phosphate rock Substances 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract 2
- 150000001340 alkali metals Chemical class 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 19
- 239000002585 base Substances 0.000 description 12
- 239000004927 clay Substances 0.000 description 12
- 238000005245 sintering Methods 0.000 description 12
- 239000002817 coal dust Substances 0.000 description 11
- 239000002689 soil Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229960005191 ferric oxide Drugs 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000004528 Catalpa ovata Species 0.000 description 1
- 235000010005 Catalpa ovata Nutrition 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000011451 fired brick Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The additive for building material of baked brick and tile is prepared with nitrate of alkali metal or alkali earth metal 1-30 weight portions, chloride of alkali metal 3-20 weight portions, phosphorus compound 0-10 weight portions and coloring component 0-20 weight portions.
Description
The present invention relates to be a kind of when firing brick-and tile building material as with base raw materials such as clay, the shale additive that uses of blended added ingredients mutually.
Traditional brick-and tile building material is with clay, shale, or its two mixture is the base raw material, mixes and makes wet blank with water, forms through sintering again.Fuel consumption during this mode of production sintering is big, and the capability and performance indexs such as ultimate compression strength that improve goods are difficulty comparatively, thereby the use range of goods is restricted.For this reason, existing as Chinese patent publication number 1082522A is introduced mixes afterwards the technology of base with carbonaceous powders such as cinder, coal dust, flue dusts as raw materials such as additive component and clays and is promoting the use of.Owing in blank, be mixed with the carbonaceous particles composition, when sintering, these carbonaceous particles also can be burnt simultaneously, thereby can save the fuel and the sintering time of sintering to a certain extent, while also can reach and make full use of multiple carbonaceous solid trade waste, to a certain degree with on the scope is solving some problem of environmental pollution.But find in the actual production, in this way produce brick and tile product, because the carbonaceous particles such as coal dust as additive must be that point-like is distributed in the blank with being dispersed in, the insufficient burnt phenomenon that therefore has half-cooked or half a lifetime at the position that does not have these size distribution exists.And owing to can stay hole in goods behind the flammable particle burnings such as coal dust, the sulfur-bearing in the coal also can form sulfur-bearing " frosting salt " after becoming divided combustion on goods, influenced Products Quality.And in actual production, the coal dust that uses as additive all obtains the lumped coal powdered carbon after broken usually, roasting fuel consumption when therefore adding sintering, total flow to coal does not produce the effective effect that how much is of practical significance, and also will increase the newly-increased energy consumption and the cost that bring because of coal pulverizing program simultaneously.Chinese patent publication number 1041928A has proposed a kind of except that carbonaceous components such as adding waste coal ash on the basis of this technology, also adds feldspar in powder and ferric oxide red powder as fusing assistant, to improve the intensity and the solidity to corrosion of goods.Chinese patent publication number 1078450A has proposed further improvement more on its basis, the additive with the natural mineral of halide (sodium-chlor), silicate or vitriol or abandoned mine slag during as base.Obviously, a common ground of technique scheme is all to be unable to do without with the additive of granular coal dust as internal combustion to use, thereby also just all can't break away from thus the actual consumption adverse effect to quality of item and energy and material.
The objective of the invention is for fundamentally address the above problem provide a kind of when the firing brick-and tile building material as the additive that mixes use with base raw materials such as clay, shale, make itself and base material composition full and uniform mixing of energy, reach and to save total energy and material consumption, can reduce cost significantly again, can also overcome coal particles and the uneven distribution in blank thereof quality adverse effect brick and tile product.
The additive that is used for firing brick-and tile building material of the present invention is made up of nitrate, alkali metal chloride, phosphorus compound and the coloring components of basic metal or alkaline-earth metal, and the parts by weight of each composition consist of:
Nitrate 1-30 part of basic metal or alkaline-earth metal
Alkali metal chloride 3-20 part
Phosphorus compound 0-10 part
Coloring components 0-20 part.The wherein said basic metal or the nitrate of alkaline-earth metal can be at least a in the nitrate such as SODIUMNITRATE commonly used, saltpetre or strontium nitrate.Because the price of strontium nitrate is higher, and particularly easily blasts when being heated at normal temperatures, and certain limitation and higher requirement are arranged on the safety in utilization, thereby be good to use saltpetre cheap and easy to get usually.When sintering, these nitrate are good combustion-supporting oxygenates.Said alkali metal chloride can be at least a, obviously convenient with sodium-chlor especially in sodium-chlor commonly used or the Repone K.Under the agglomerating condition of high temperature, it can react and heat release.Said phosphorus compound can be in calcium superphosphate or the ground phosphate rock at least a, it is at agglomerating high temperature and have nitrate to do under the condition of oxygenate, through chemical reaction, phosphorus wherein can participate in burning, discharges a large amount of heat.Through test, under the condition of the soil property modest viscosity of used base raw material, for example moisture soil property raw material for 5-10% is landed breakable soil property highly naturally from 1-2 rice, phosphorus compound can be used less, even can, but should suitably increase the consumption of nitrate this moment.For with sodium, magnesium component content height and sulphur, shale soil property that iron level is low when being main base raw material, generally all need use phosphorus compound, in above-mentioned amount ranges, especially be good with the ratio consumption that adopts 1.5-6 part, and also should strengthen the consumption of nitrate simultaneously, even can use 30 parts maximum usage ratio.Said coloring components is that red iron oxide, iron oxide black or the iron oxide yellow etc. of chemical ingredientss such as trioxygen-containingization two iron that can use always in the brick and tile production, Z 250 contain the ferrous components tinting material, according to the required color of firing brick-and tile goods being required to select for use a kind of, multiple routinely or need not.When using tinting material, its consumption can be selected in the scope of 2-20 part.Because the composition of additive of the present invention is water soluble component substantially, therefore can it is soluble in water, mix mutually with main base raw material such as clay or shale again, can be so that it accomplish mixing full and uniform in blank and distribution, can not produce half-cooked, half a lifetime or other any disadvantageous effect that influences quality of item during sintering.
Warp is opposed than test with the sintering brick-making method that present blending has matchmaker's powder to make additive, sintering solid brick in per ten thousand regular sizes, usage quantity when using coal dust to make additive all is not less than 1500 kilograms usually, cost is more than 210 yuan, and the usage quantity of using additive of the present invention is the 30-80 kilogram, and cost only is a 50-110 unit, and the two relatively, under the prerequisite of the quality that guarantees brick, use additive of the present invention can make cost reduce more than 70%.
Below with example foregoing of the present invention is described further.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following example.
Example 1: this routine sintered brick and tile is formed (usage quantity when being 10,000 blocks of regular size solid bricks of system, consumption unit is kilogram, and is as follows) with the weight of additive and is:
Calcium superphosphate 2, iron oxide black 8, saltpetre 8, Repone K 8.This routine additive is applicable to the brickmaking blank that with the clay is main raw material.
Example 2: the weight of this routine additive consists of:
Calcium superphosphate 4, red iron oxide 12, SODIUMNITRATE 10, sodium-chlor 8.This routine additive is the brickmaking blank of main raw material applicable to the soil property with the inclined to one side sand of clay.
Example 3: the weight of this routine additive consists of:
Calcium superphosphate 3.5, iron oxide black 12, saltpetre 11, Repone K 10.This routine additive is the brickmaking blank of main raw material applicable to the soil property with the inclined to one side shale of clay.
Example 4: the weight of this routine additive consists of:
Calcium superphosphate 4, red iron oxide 20, saltpetre 25, sodium-chlor 14.This routine additive is applicable to being the brickmaking blank of main raw material with the more shale of iron content sulphur composition.
Example 5: the weight of this routine additive consists of:
Calcium superphosphate 1.5, red iron oxide 6, saltpetre 6, sodium-chlor 6.This routine additive is the brickmaking blank of main raw material applicable to the soil property of gluing partially with sand.
Example 6: the weight of this routine additive consists of:
Red iron oxide 10, saltpetre 12, sodium-chlor 8.This routine additive is the brickmaking blank of main raw material applicable to the soil property with the inclined to one side sand of clay.
Example 7: the weight of this routine additive consists of:
Ground phosphate rock 1.8, saltpetre 10, sodium-chlor 8.This routine additive is applicable to the brickmaking blank that with the clay is main raw material.
Example 8: the weight of this routine additive consists of:
Iron oxide yellow 12, SODIUMNITRATE 12, Repone K 10.This routine additive is the brickmaking blank of main raw material applicable to the soil property that contains shale with clay.
Example 9: the weight of this routine additive consists of:
Red iron oxide 10, saltpetre 8, sodium-chlor 10.This routine additive is the brickmaking blank of main raw material applicable to the soil property with half clay, half shale.
Soil property with the inclined to one side sand of clay is main base raw material, the additive that adopts the above-mentioned example 2 of the present invention to form, the common brick of the common specification made from the sintering process method of routine carries out quality examination by the regulation of CNS GB5101-93, reached the index of MU10 label, detected result is referring to table 1.This detected result clearlys show, uses the quality of the ordinary fired brick of additive of the present invention to reach the quality index requirement that also can be higher than this national standard defined.
Adopt respectively in the base material, to use with through different brickmaking factories and make the simultaneous test that vitrified brick is produced as internal combustion additive and the above-mentioned some additives of the present invention with coal dust, the coal-fired consumption (ton) of the roasting of using when the usage quantity of its additive component (ton), sintering, and the comparative test result of this two material total cost (unit) that is consumed is referring to table 2.The comparative test result of table 2 demonstrates clearly, equal base raw material and working condition under, adopt additive of the present invention to make the internal combustion additive and can have more obvious and superior economic worth and meaning than carbonaceous powders such as adopting coal dust at present.
Table 1 adopts the quality examination result of the vitrified brick behind the additive of the present invention
| Numbering | Sample specification (long * wide * thick) (centimetre) | Resistance to compression loading (N) | Ultimate compression strength (MPa) |
| ????1 | ????24.0×11.4×5.3 | ????204000 | ????16.32 |
| ????2 | ????23.7×11.4×5.5 | ????153600 | ????13.13 |
| ????3 | ????23.7×11.5×5.3 | ????136900 | ????11.22 |
| ????4 | ????24.0×11.3×5.4 | ????188700 | ????15.60 |
| ????5 | ????23.7×11.3×5.2 | ????147000 | ????13.01 |
| ????6 | ????23.8×11.4×5.2 | ????162000 | ????13.17 |
| ????7 | ????23.7×11.6×5.5 | ????248800 | ????19.44 |
| ????8 | ????24.0×11.4×5.4 | ????205400 | ????16.57 |
| ????9 | ????23.9×11.3×5.2 | ????160300 | ????13.25 |
| ????10 | ????23.8×11.4×5.2 | ????222100 | ????17.91 |
| Mean value | ????23.83×11.4×5.32 | ????182880 | ????14.92 |
| The required standard value of MU10 label in the GB5101-93 standard | ????9.54 | ||
Table 2 uses additive of the present invention to make the production comparative test result of additive with using coal dust
| Brickmaking factory | Use the coal dust additive | Use additive of the present invention | ||||
| The coal dust additive amount | The roasting Coal-fired capacity | The two material total cost | Additive amount/composition | The roasting Coal-fired capacity | The two material total cost | |
| Mianyang W brick field | ??1.5-1.6 | ??1 | ????350 | 0.033/ example 2 | ????1 | ??190 |
| Mianyang J brick field | ??1.5-1.6 | ??1.1 | ????364 | 0.036/ example 3 | ????1 | ??192 |
| An County H brick field | ??1.5-1.8 | ??1.1 | ????364 | 0.020/ example 1 | ????1.3 | ??178 |
| Chengdu H brick field | ??1.8-1.9 | ??0.6 | ????350 | 0.032/ example 1 | ????0.8 | ??150 |
| Chinese catalpa slag C shale brick field | ??2-2.2 | ??2 | ????596 | 0.063/ example 4 | ????2 | ??590 |
| An County E brick field | ??1.5-1.8 | ??1 | ????350 | 0.022/ example 5 | ????1 | ??178 |
Claims (9)
1. an additive that is used for firing brick-and tile building material is characterized in that being made up of nitrate, alkali metal chloride, phosphorus compound and the coloring components of basic metal or alkaline-earth metal, and the parts by weight of each composition consist of:
Nitrate 1-30 part of basic metal or alkaline-earth metal
Alkali metal chloride 3-20 part
Phosphorus compound 6-10 part
Coloring components 6-20 part.
2. additive as claimed in claim 1, the nitrate that it is characterized in that said basic metal or alkaline-earth metal are at least a in SODIUMNITRATE, saltpetre or the strontium nitrate.
3. additive as claimed in claim 2, the nitrate that it is characterized in that said basic metal or alkaline-earth metal is saltpetre.
4. additive as claimed in claim 1 is characterized in that said alkali metal chloride is at least a in sodium-chlor or the Repone K.
5. additive as claimed in claim 4 is characterized in that said alkali metal chloride is a sodium-chlor.
6. additive as claimed in claim 1 is characterized in that said phosphorus compound is at least a in calcium superphosphate or the ground phosphate rock.
7. additive as claimed in claim 1 is characterized in that said coloring components is a kind of in red iron oxide, iron oxide black or the iron oxide yellow.
8. as the described additive of one of claim 1 to 7, it is characterized in that the parts by weight of said each composition consist of:
Nitrate 6-25 part of basic metal or alkaline-earth metal
Alkali metal chloride 6-14 part
Phosphorus compound 1.5-6 part
Coloring components 2-20 part.
9. additive as claimed in claim 8 is characterized in that the parts by weight of said each composition consist of:
Nitrate 6-25 part of basic metal or alkaline-earth metal
Alkali metal chloride 6-14 part
Phosphorus compound 1.5-4 part
Coloring components 6-20 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107442 CN1179404A (en) | 1997-04-17 | 1997-04-17 | Additive for firing brick and tile building materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107442 CN1179404A (en) | 1997-04-17 | 1997-04-17 | Additive for firing brick and tile building materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1179404A true CN1179404A (en) | 1998-04-22 |
Family
ID=5169560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97107442 Pending CN1179404A (en) | 1997-04-17 | 1997-04-17 | Additive for firing brick and tile building materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1179404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987118A (en) * | 2015-06-25 | 2015-10-21 | 合肥蓝科新材料有限公司 | Thermal-insulation air-entrapping brick |
-
1997
- 1997-04-17 CN CN 97107442 patent/CN1179404A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987118A (en) * | 2015-06-25 | 2015-10-21 | 合肥蓝科新材料有限公司 | Thermal-insulation air-entrapping brick |
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