CN100390094C - Porous brick, hollow brick prepared from waste hydrochloric acid liquid containing iron and its preparation method - Google Patents
Porous brick, hollow brick prepared from waste hydrochloric acid liquid containing iron and its preparation method Download PDFInfo
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- CN100390094C CN100390094C CNB2006101384432A CN200610138443A CN100390094C CN 100390094 C CN100390094 C CN 100390094C CN B2006101384432 A CNB2006101384432 A CN B2006101384432A CN 200610138443 A CN200610138443 A CN 200610138443A CN 100390094 C CN100390094 C CN 100390094C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a porous brick and hollow brick with waste ferric alcaine liquid, which comprises the following parts: 30-50% clay, 40-60% shale, 10-20% coal slag, inferior coal, coal ash, coal waste or their mixture, 1-3% waste of ferric ore, wherein the particle of each material is less than 1mm. The preparing method comprises the following steps: stirring waste ferric alcaine liquid and supernatant reacted by waste iron filling and ferric ore waste and all components completely; blending evenly; aging; compressing; stirring; squeezing; cutting mould; piling mould; stewing; drying; sintering; cooling naturally.
Description
Technical field
The present invention relates to a kind of waste hydrochloric acid containing iron liquid and clay etc. used and be the perforated brick for building of feedstock production, hollow brick and preparation method thereof.
Background technology
In the production process of cold rolled strip, need handle the surface of steel, its treating processes acid cleaning process just; Being about to steel, to immerse acid concentration be to carry out pickling in about 20% the pickling tank, and along with the carrying out of pickling, acid concentration reduces gradually, concentration of iron constantly raises, and acid concentration is reduced to 6%-8% in solution, when the concentration of iron of generation surpasses 20%-25%, pickling speed descends, and pickle solution must be changed.Because the price of hydrochloric acid is more cheap than sulfuric acid, and chlorohydric acid pickling has more outstanding advantage than sulfuric acid washing, and therefore pickling medium is progressively replaced by hydrochloric acid in recent years.But the two all has spent acid to handle problems, and the spent acid treatment measures have confidential relation with construction investment, product cost, environment protection, and different treatment processs has nothing in common with each other to the influence degree of above three aspects.Present existing spent acid treatment process roughly has six kinds: the one, and spray roasting; The 2nd, extraction-roasting method; The 3rd, extraction-benefit chlorine method; The 4th, extraction-neutralisation; The 5th, dialysis-neutralisation; The 6th, neutralisation.Wherein spray roasting is the comparatively advanced method of present abraum salt acid treatment, mostly is relatively large steel mill and uses; Other are several or investment is very big, or processing is not thorough, or technology is immature, so less employing.It all is to adopt spray roasting to handle abraum salt acid that production line about 300 is arranged now in the world, and existing several abraum salt acid treatment of China also are to adopt this method.But because this law technology content height, facility investment is big, and some medium-sized and small enterprises are unable to be born, so the hydrochloric acid pickling waste liquor of some middle-size and small-size steel mills at present discharges after adopting the neutralisation simple process more.Owing to handle not thoroughly, the spent acid amount is big, causes that draining can't be up to standard outside the steel mill.Through rough Statistics, the annual whole nation has millions of tons of waste hydrochloric acid containing irons to adopt this method discharging, greatly pollutes, destroyed environment.
Summary of the invention
For solving the problem that exists in the process of part steel mill abraum salt acid treatment now, the contriver is according to years'experiences, through consulting amount of literature data and test up to a hundred time, develop the present invention with the perforated brick of waste hydrochloric acid containing iron liquid preparation, hollow brick and preparation method thereof.
The object of the present invention is to provide a kind of perforated brick, hollow brick and preparation method thereof,, benefit the society to reduce enterprise cost, to reduce and pollute with the preparation of waste hydrochloric acid containing iron liquid.
For realizing purpose of the present invention, the present invention a kind of perforated brick, hollow brick with the preparation of waste hydrochloric acid containing iron liquid, its main ingredient is:
1), the pH value is that 5.5-7.0 waste hydrochloric acid containing iron liquid is an amount of;
2), clay 30-50 weight part, be preferably 40 weight parts; Shale 40-60 weight part is preferably 50 weight parts; Cinder, low grade coal, flyash, coal gangue or its mixing 10-20 weight part are preferably 15 weight parts; Iron ore waste residue 1-3 weight part is preferably 2 weight parts; The particle of above-mentioned various materials is crushed to a brick level powder, and particle is less than 1 millimeter.
A kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid of the present invention, the preparation method of hollow brick the steps include:
1), the particle of clay, shale, cinder, low grade coal, flyash, coal gangue and iron ore waste residue material is crushed to less than 1 millimeter, standby;
2), waste hydrochloric acid containing iron liquid and waste iron filing, iron ore waste residue are reacted, make its pH value reach 5.5-7.0;
3), with step 2) in supernatant liquor and clay 30-50 weight part, be preferably 40 weight parts; Shale 40-60 weight part is preferably 50 weight parts; Cinder, low grade coal, flyash, coal gangue or its mixing 10-20 weight part are preferably 15 weight parts; Iron ore waste residue 1-3 weight part is preferably 2 weight parts, fully stirs, mixing;
4), be placed in the ageing storehouse after ageing in 72-120 hour, be preferably 96 hours, through roll, restir sends in the brick extruding machine;
5), vacuum extrusion becomes to contain the hollow mud bar that waste liquid is 15-25%, is preferably 20%, pressure is 15-25kg/cm
2, be preferably 20kg/cm
2, vacuum tightness is 0.05-0.15MPa;
6), again through routine cut base, the sign indicating number base after, standing and drying, control kiln temperature be 80-120 ℃, the time is 24-72 hour;
7), after be sintering under the 780-1200 ℃ of condition with adobe in temperature, be preferably 950-1050 ℃ and fired 36-48 hour, back naturally cooling promptly.
In the technical solution of the present invention, described clay mainly is meant the clay that general common brick is used;
Described shale can be: black shale, yeath, resinous shale, siliceous shale or irony shale etc., and widely distributed in China, and reserves are huge;
Described cinder, low grade coal, flyash, coal gangue, iron ore waste residue etc. all belong to the waste material of colliery, power plant, Steel Plant etc., and be with low cost, wide material sources;
Described sintering can adopt conventional method for baking bricks such as known annular kiln or tunnel furnace;
Equipment used is brickmaking factory common equipment among the present invention, just stores and the reservoir when reacting is anti-acid type, can be reactive tank that cement etc. makes, jar etc., but wants the well-ventilated.
The abraum salt acid solution is taken from the waste of steel mill among the present invention, has both solved the handling problem of abraum salt acid, has avoided environmental pollution again, has also reduced cost; And again because of containing other materials such as iron protochloride more than 30% and a spot of hydrochloric acid in the reacted abraum salt acid, it mixes with above-mentioned various materials, also can generating unit divide the chemistry reaction, particularly behind oversintering, form mixtures such as complicated trivalent ferric oxide, calcium oxide, magnesium oxide, aluminum oxide, silicon oxide, because ferric iron compound is arranged, product presents bright red, and the mixture of these complex oxides, make the brick body fine and close more, intensity is higher, and fracture resistance is better, has other and does not add the incomparable advantage of waste hydrochloric acid containing iron brick.
Simultaneously, because the inside is mixed with the internal combustion thing, cinder, low grade coal, flyash, coal gangue etc. make brick that the present invention makes in sintering process, also have other advantage: 1. both energy-saving and cost-reducing, reduce environmental pollution again; 2. can accelerate annular kiln, tunnel furnace rate of roasting, quicken annular kiln, tunnel furnace turnover, improve output and quality; 3. shorten the body drying cycle, alleviate hollow brick unit weight, reduce thermal conductivity and thermosteresis, improve the heat-insulation and heat-preservation ability; 4. alleviate burner man's labour intensity and coal ash pollution, improve the kiln discharge operating condition.
Embodiment
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Embodiment 1 the present invention a kind of perforated brick, hollow brick with the preparation of waste hydrochloric acid containing iron liquid
1), the pH value is that 5.5 waste hydrochloric acid containing iron liquid are an amount of forms:;
2), clay 30 weight parts, shale 60 weight parts, cinder 10 weight parts, iron ore waste residue 3 weight parts; The particle of above-mentioned various materials is crushed to a brick level powder, and particle is less than 1 millimeter.
The preparation method:
1), the particle with clay, shale, cinder, iron ore waste residue material is crushed to less than 1 millimeter;
2), waste hydrochloric acid containing iron liquid and waste iron filing, iron ore waste residue etc. are reacted, make its pH value reach 5.5;
3), with step 2) in supernatant liquor and above-mentioned clay 30 weight parts, shale 60 weight parts, cinder 10 weight parts, iron ore waste residue 3 weight parts fully stir, mixing;
4), be placed in the ageing storehouse after ageing in 72 hours, through roll, restir sends in the brick extruding machine;
5), to become to contain waste liquid be 25% hollow mud bar to vacuum extrusion, pressure is 15kg/cm
2, vacuum tightness is 0.15MPa;
6), again through routine cut base, the sign indicating number base after, standing and drying, control kiln temperature be 120 ℃, the time is 24 hours;
7), after be sintering under 1200 ℃ of conditions with adobe in temperature, fired 36 hours, back naturally cooling promptly.
Embodiment 2 the present invention a kind of perforated brick, hollow brick with the preparation of waste hydrochloric acid containing iron liquid
1), the pH value is that 6.8 waste hydrochloric acid containing iron liquid are an amount of forms:;
2), clay 50 weight parts, shale 40 weight parts, low grade coal 20 weight parts, iron ore waste residue 1 weight part; The particle of above-mentioned various materials is crushed to a brick level powder, and particle is less than 1 millimeter.
The preparation method:
1), the particle with clay, shale, low grade coal and iron ore waste residue material is crushed to less than 1 millimeter;
2), waste hydrochloric acid containing iron liquid and waste iron filing, iron ore waste residue etc. are reacted, make its pH value reach 6.8;
3), with step 2) in supernatant liquor and above-mentioned clay 50 weight parts, shale 40 weight parts, low grade coal 20 weight parts, iron ore waste residue 1 weight part fully stirs, mixing;
4), be placed in the ageing storehouse after ageing in 120 hours, through roll, restir sends in the brick extruding machine;
5), to become to contain waste liquid be 15% hollow mud bar to vacuum extrusion, pressure is 25kg/cm
2, vacuum tightness is 0.05MPa;
6), again through routine cut base, the sign indicating number base after, standing and drying, control kiln temperature be 80 ℃, the time is 72 hours;
7), after be sintering under 780 ℃ of conditions with adobe in temperature, fired 48 hours, back naturally cooling promptly.
Embodiment 3 the present invention a kind of perforated brick, hollow brick with the preparation of waste hydrochloric acid containing iron liquid
1), the pH value is that 6.0 waste hydrochloric acid containing iron liquid are an amount of forms:;
2), clay 40 weight parts, shale 50 weight parts, cinder, coal gangue mix 15 weight parts, iron ore waste residue 2 weight parts; The particle of above-mentioned various materials is crushed to a brick level powder, and particle is less than 1 millimeter.
The preparation method:
1), the particle with clay, shale, cinder, coal gangue and iron ore waste residue material is crushed to less than 1 millimeter;
2), waste hydrochloric acid containing iron liquid and waste iron filing, iron ore waste residue etc. are reacted, make its pH value reach 6.0;
3), with step 2) in supernatant liquor and above-mentioned clay 40 weight parts, shale 50 weight parts, cinder, coal gangue mix 15 weight parts, iron ore waste residue 2 weight parts fully stir, mixing;
4), be placed in the ageing storehouse after ageing in 96 hours, through roll, restir sends in the brick extruding machine;
5), to become to contain waste liquid be 20% hollow mud bar to vacuum extrusion, pressure is 20kg/cm
2, vacuum tightness is 0.10MPa;
6), again through routine cut base, the sign indicating number base after, standing and drying, control kiln temperature be 100 ℃, the time is 48 hours;
7), after be sintering under 1000 ℃ of conditions with adobe in temperature, fired 42 hours, back naturally cooling promptly.
Embodiment 4 the present invention a kind of perforated brick, hollow brick with the preparation of waste hydrochloric acid containing iron liquid
1), the pH value is that 6.5 waste hydrochloric acid containing iron liquid are an amount of forms:;
2), clay 35 weight parts, shale 55 weight parts, flyash 12 weight parts, iron ore waste residue 1.5 weight parts; The particle of above-mentioned various materials is crushed to a brick level powder, and particle is less than 1 millimeter.
The preparation method:
1), the particle with clay, shale, flyash and iron ore waste residue material is crushed to less than 1 millimeter;
2), waste hydrochloric acid containing iron liquid and waste iron filing, iron ore waste residue etc. are reacted, make its pH value reach 6.5;
3), with step 2) in supernatant liquor and above-mentioned clay 35 weight parts, shale 55 weight parts, flyash 12 weight parts, iron ore waste residue 1.5 weight parts fully stir, mixing;
4), be placed in the ageing storehouse after ageing in 80 hours, through roll, restir sends in the brick extruding machine;
5), to become to contain waste liquid be 18% hollow mud bar to vacuum extrusion, pressure is 22kg/cm
2, vacuum tightness is 0.07MPa;
6), again through routine cut base, the sign indicating number base after, standing and drying, control kiln temperature be 110 ℃, the time is 30 hours;
7), after be sintering under 950 ℃ of conditions with adobe in temperature, fired 40 hours, back naturally cooling promptly.
Embodiment 5 the present invention a kind of perforated brick, hollow brick with the preparation of waste hydrochloric acid containing iron liquid
1), the pH value is that 5.8 waste hydrochloric acid containing iron liquid are an amount of forms:;
2), clay 45 weight parts, shale 45 weight parts, cinder, low grade coal, flyash, coal gangue mixture 18 weight parts, iron ore waste residue 2.5 weight parts; The particle of above-mentioned various materials is crushed to a brick level powder, and particle is less than 1 millimeter.
The preparation method:
1), the particle with clay, shale, cinder, low grade coal, flyash, coal gangue and iron ore waste residue material is crushed to less than 1 millimeter;
2), waste hydrochloric acid containing iron liquid and waste iron filing, iron ore waste residue etc. are reacted, make its pH value reach 5.8;
3), with step 2) in supernatant liquor and above-mentioned clay 45 weight parts, shale 45 weight parts, cinder, low grade coal, flyash, coal gangue mixture 12 weight parts, iron ore waste residue 2.5 weight parts fully stir, mixing;
4), be placed in the ageing storehouse after ageing in 110 hours, through roll, restir sends in the brick extruding machine;
5), to become to contain waste liquid be 23% hollow mud bar to vacuum extrusion, pressure is 17kg/cm
2, vacuum tightness is 0.13MPa;
6), again through routine cut base, the sign indicating number base after, standing and drying, control kiln temperature be 90 ℃, the time is 66 hours;
7), after be sintering under 1050 ℃ of conditions with adobe in temperature, fired 45 hours, back naturally cooling promptly.
For showing a kind of perforated brick of the present invention, the impact of performance of hollow brick, further set forth below by simultaneous test with the preparation of waste hydrochloric acid containing iron liquid:
1), 100# standard common brick test materials:
2), adopt perforated brick, hollow brick testing installation and the method for the preparation of method described in the embodiment of the invention 1-5: the testing installation and the test method that adopt common brick
| Project | Unit | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | 100# common brick standard value |
| Outward appearance | - | N/D, crackle, bending, impurity protrude | N/D, crackle, bending, impurity protrude | N/D, crackle, bending, impurity protrude | N/D, crackle, bending, impurity protrude | N/D, crackle, bending, impurity protrude | N/D, crackle, bending, impurity protrude |
| Volume density | kg/m 3 | 1390 | 1232 | 1280 | 1380 | 1210 | 1365 |
| Water-intake rate | ％ | 5.2 | 6.7 | 5.9 | 5.3 | 7.1 | 5.5 |
| Ultimate compression strength | MPa | 16.3 | 11.9 | 14.9 | 15.2 | 11.6 | 10.5 |
| The monolithic minimum value | MPa | 13.1 | 9.2 | 12.6 | 12.9 | 8.7 | 6.2 |
| Folding strength | MPa | 8.3 | 5.9 | 8.5 | 8.1 | 5.6 | 2.5 |
| The monolithic minimum value | MPa | 7.1 | 4.7 | 7.3 | 6.9 | 4.2 | 1.1 |
Conclusion: adopt the present invention all to be better than 100# common brick standard value with the perforated brick of waste hydrochloric acid containing iron liquid preparation, main performance index such as ultimate compression strength, the folding strength etc. of hollow brick.
Claims (10)
1. perforated brick, hollow brick with a waste hydrochloric acid containing iron liquid preparation is characterized in that main ingredient is:
1), the pH value is that the 5.5-7.0 waste hydrochloric acid containing iron is an amount of;
2), clay 30-50 weight part; Shale 40-60 weight part; Cinder, low grade coal, flyash, coal gangue or its mixing 10-20 weight part; Iron ore waste residue 1-3 weight part.
2. a kind of perforated brick, hollow brick with the preparation of waste hydrochloric acid containing iron liquid according to claim 1, it is characterized in that: the particle of the various materials described component 2) is less than 1 millimeter.
3. a kind of perforated brick, hollow brick according to claim 1 with the preparation of waste hydrochloric acid containing iron liquid, it is characterized in that: described component 2) medium clay soil is 40 weight parts; Shale is 50 weight parts; Cinder, low grade coal, flyash, coal gangue or its are mixed into 15 weight parts; The iron ore waste residue is 2 weight parts.
4. the described a kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid of claim 1, the preparation method of hollow brick is characterized in that step is:
1), the particle of clay, shale, cinder, low grade coal, flyash, coal gangue and iron ore waste residue material is crushed to less than 1 millimeter, standby;
2), waste hydrochloric acid containing iron and waste iron filing, iron ore waste residue are reacted, make its pH value reach 5.5-7.0;
3), with step 2) in supernatant liquor and clay 30-50 weight part; Shale 40-60 weight part; Cinder, low grade coal, flyash, coal gangue or its mixing 10-20 weight part; Iron ore waste residue 1-3 weight part fully stirs, mixing;
4), be placed in the ageing storehouse after ageing in 72-120 hour, through roll, restir sends in the brick extruding machine;
5), vacuum extrusion becomes to contain the hollow mud bar that waste liquid is 15-25%, pressure is 15-25kg/cm
2, vacuum tightness is 0.05-0.15MPa;
6), again through routine cut base, the sign indicating number base after, standing and drying, control kiln temperature be 80-120 ℃, the time is 24-72 hour;
7), after be sintering under the 780-1200 ℃ of condition with adobe in temperature, fired 36-48 hour, back naturally cooling promptly.
5. a kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid according to claim 4, the preparation method of hollow brick, it is characterized in that: described step 3) medium clay soil is 40 weight parts.
6. a kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid according to claim 4, the preparation method of hollow brick, it is characterized in that: shale is 50 weight parts in the described step 3).
7. a kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid according to claim 4, the preparation method of hollow brick is characterized in that: cinder in the described step 3), low grade coal, flyash, coal gangue or its are mixed into 15 weight parts; The iron ore waste residue is 2 weight parts.
8. a kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid according to claim 4, the preparation method of hollow brick, it is characterized in that: digestion time is 96 hours in the described step 4).
9. a kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid according to claim 4, the preparation method of hollow brick is characterized in that: to become to contain waste liquid be 20% hollow mud bar to vacuum extrusion in the described step 5), and pressure is 20kg/cm
2
10. a kind of perforated brick with the preparation of waste hydrochloric acid containing iron liquid according to claim 4, the preparation method of hollow brick is characterized in that: be sintering under the 950-1050 ℃ of condition with adobe in temperature in the described step 7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101384432A CN100390094C (en) | 2006-11-15 | 2006-11-15 | Porous brick, hollow brick prepared from waste hydrochloric acid liquid containing iron and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101384432A CN100390094C (en) | 2006-11-15 | 2006-11-15 | Porous brick, hollow brick prepared from waste hydrochloric acid liquid containing iron and its preparation method |
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| Publication Number | Publication Date |
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| CN1962522A CN1962522A (en) | 2007-05-16 |
| CN100390094C true CN100390094C (en) | 2008-05-28 |
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| CNB2006101384432A Expired - Fee Related CN100390094C (en) | 2006-11-15 | 2006-11-15 | Porous brick, hollow brick prepared from waste hydrochloric acid liquid containing iron and its preparation method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2502708C1 (en) * | 2012-09-14 | 2013-12-27 | Юлия Алексеевна Щепочкина | Mixture for making porous aggregate |
| CN102992737A (en) * | 2012-10-12 | 2013-03-27 | 蚌埠华泰新型建材有限公司 | Process for preparing shale gangue coal ash fired hollow bricks |
| CN107417295A (en) * | 2017-05-02 | 2017-12-01 | 杨朝雄 | Gardens path laying bricks with water permeability and water storage ability |
| CN109400201A (en) * | 2018-10-31 | 2019-03-01 | 徐州振丰新型墙体材料有限公司 | A kind of hollow brick manufacture craft |
| CN111330547B (en) * | 2020-03-12 | 2020-10-27 | 河北工业大学 | A non-burning adsorbent for removing organic pollutants in water based on iron-containing solid waste |
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| CN1051033A (en) * | 1989-10-20 | 1991-05-01 | 湖北省襄樊市胶粘技术研究所 | Non-burning antifire light profile and manufacture method thereof |
| CN1078450A (en) * | 1992-05-03 | 1993-11-17 | 陈红剑 | Energy-saving clinker brick |
| CN1191851A (en) * | 1998-02-19 | 1998-09-02 | 张天保 | Sintered phosphate sludge energy-saving brick |
| CN1598214A (en) * | 2004-09-27 | 2005-03-23 | 柳州三幸商贸有限责任公司 | Method and equipment for producing art veins cleavage tile |
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2006
- 2006-11-15 CN CNB2006101384432A patent/CN100390094C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051033A (en) * | 1989-10-20 | 1991-05-01 | 湖北省襄樊市胶粘技术研究所 | Non-burning antifire light profile and manufacture method thereof |
| CN1078450A (en) * | 1992-05-03 | 1993-11-17 | 陈红剑 | Energy-saving clinker brick |
| CN1191851A (en) * | 1998-02-19 | 1998-09-02 | 张天保 | Sintered phosphate sludge energy-saving brick |
| CN1598214A (en) * | 2004-09-27 | 2005-03-23 | 柳州三幸商贸有限责任公司 | Method and equipment for producing art veins cleavage tile |
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| CN1962522A (en) | 2007-05-16 |
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