EP0923506A2 - Method for producing sulfate cement or sulfate cement aggregates - Google Patents
Method for producing sulfate cement or sulfate cement aggregatesInfo
- Publication number
- EP0923506A2 EP0923506A2 EP98909205A EP98909205A EP0923506A2 EP 0923506 A2 EP0923506 A2 EP 0923506A2 EP 98909205 A EP98909205 A EP 98909205A EP 98909205 A EP98909205 A EP 98909205A EP 0923506 A2 EP0923506 A2 EP 0923506A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gypsum
- slag
- sulfate
- cement
- slags
- 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.)
- Withdrawn
Links
- 239000004568 cement Substances 0.000 title claims abstract description 47
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 239000002893 slag Substances 0.000 claims abstract description 66
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 31
- 239000010440 gypsum Substances 0.000 claims abstract description 31
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 229910052925 anhydrite Inorganic materials 0.000 claims abstract description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 6
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 4
- 230000023556 desulfurization Effects 0.000 claims abstract description 4
- 239000003546 flue gas Substances 0.000 claims abstract description 4
- 235000013980 iron oxide Nutrition 0.000 claims abstract 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 12
- 238000004056 waste incineration Methods 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- -1 alkaline earth metal sulfate Chemical class 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 10
- 239000011398 Portland cement Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Definitions
- the invention relates to a method for producing sulfate cement or sulfate cement additives.
- blast furnace slag was ground with 15% by weight calcium sulfate in the form of raw gypsum and about 2% by weight Portland cement was added.
- the presence of hydrated lime in the first hardening stage has turned out to be necessary, because otherwise a dense gel layer will form primarily before sulfatic hardening takes place.
- blast furnace slags are unsuitable for the production of sulphate metallurgical cement. This is all the more true as conventional blast furnace slags generally have a relatively low alumina content, so that the desired formation of sulfoaluminates is unsuccessful or insufficient, so that the risk of gypsum blowing remains. Finally, a high lime content is required, which is also generally not the case with blast furnace slag. For all of the reasons mentioned, sulphate metallurgical cements have gained no importance in construction practice.
- the invention now aims to provide a method of the type mentioned at the beginning with which it is possible to achieve cement or cement aggregates with excellent resistance to sulfate and sea water and which can be used, for example, as borehole cements, the risk of gypsum blowing being avoided with certainty.
- the process according to the invention essentially consists in mixing hydraulically active synthetic slags with a slag basicity CaO / SiO 2 between 1.35 and 1.6, such as waste incineration slags and / or blast furnace slags mixed with steel slags after reduction of metal oxides in the melt, and an Al2 ⁇ -3 content of 10 to 20% by weight and an iron oxide content of less than 2.5% by weight with 5 to 20% by weight, based on the total mixture of an alkaline earth metal sulfate, such as raw gypsum, exhaust gypsum , Flue gas desulfurization system gypsum, gypsum or anhydrite mixed in ground or crushed form.
- the AI2O3 content can be set to the specified values of 10 to 20% by weight, whereby by reducing the liquid slag not only the heavy metal content but also the Iron oxide content must be brought below 2.5% by weight in order not to subsequently observe any undesirable side effects. Because such a highly purified synthetic slag is now used, a number of materials which are difficult to dispose of, such as, for example, flue gas desulfurization system gypsum, raw gypsum, exhaust gypsum, but also gypsum and anhydrite can be used as alkaline earth metal sulfate carriers.
- the slags must be ground to a much lower fineness than was the case with known sulfate smelter cements, and it is particularly not necessary to grind the slags together with gypsum, as was the case in the past, in order to achieve a correspondingly good, homogeneous mixture guarantee.
- the usual blending of raw gypsum with the slag in the production of sulphate metallurgical cements presents a number of difficulties during grinding. In such mixtures, gypsum has a tendency to smear, so that the desired fineness cannot be easily achieved.
- the high degree of fineness required for a homogeneous distribution of the gypsum can therefore only be achieved with great difficulty.
- the synthetic slag according to the invention it is sufficient to grind this slag to a much lower fineness and to subsequently add gypsum in a correspondingly lower fineness, although the desired homogeneity of the mixture can nevertheless be achieved.
- the procedure is advantageously such that a grinding fineness of the synthetic slags between 2800 and 3500 cm ⁇ / g is selected, such grinding fineness being significantly less than the grinding fineness required for known sulphate metallurgical cements.
- the procedure is advantageously such that the Al 2 O 3 content is set between 12 and 18% by weight.
- CaS04 is advantageously used in amounts of between 8 and 15% by weight, with a corresponding rapid hardening being ensured by selecting the slag basicity to be greater than 1.45, preferably about 1.5.
- the AI2O3 content can be adjusted in a particularly simple manner by adding clays or alumina, this adjustment being able to take place in the liquid slag phase.
- Steel slags usually contain about 16% by weight SiO 2, 50% by weight CaO and 1% by weight Al 2 O 3. Such steel slags can thus be used as lime carriers to adjust the basicity of other slags, such as waste incineration slags, which are mostly to be addressed as acid slags.
- Blast furnace slags are usually also referred to as acidic slags and are rarely available with a slag basicity greater than 1.1 or 1.2.
- Blast furnace slag cements usually contain SiO 2 in amounts of approximately 37% by weight and CaO in amounts of approximately 32% by weight.
- AI2O3 is usually contained in an amount of about 13% by weight, so that mixtures of steel slags and blast furnace slags in liquid form after the basicity of the AI2O3 content has been appropriately adjusted and after the excessive chromium and iron content of steel slags has been reduced , for example using a metal bath, are suitable for a synthetic slag which subsequently converts to sulfate cement can be worked.
- Waste incineration slags are generally also referred to as acidic slags, such slags generally being characterized by an Al 2 O 3 content of the order of 10 to 25% by weight and a basicity of less than 0.5.
- Such slags thus contain significantly higher proportions of SiO 2 than CaO and are also not suitable for themselves as a starting material without appropriate adjustment of the basicity and corresponding reduction of the metal oxides.
- the appropriate slag mixture for the required hydraulically active synthetic slag must be set in the liquid phase to ensure the desired basicity values between 1.35 and 1.6, only this basicity can ensure that the sulfoaluminate reaction without a primary hydration below
- the use of hydrated lime or Portland cement is made possible, since otherwise the formation of a gel layer would hinder this reaction.
- a sulfate smelter cement was produced and compared with a cement produced according to the invention.
- This comparison showed that the compressive strength development in the cement according to the invention is characterized by a higher final strength with a slightly lower strength after 3 days.
- the compressive strength values for sulfate metallurgical cement after 3 days were 41 N / mm 2 compared to 38 N / mm 2 for the cement according to the invention. After 28 days, a compressive strength of 76 N / mm 2 could be achieved with sulphate metallurgical cement, whereas the cement according to the invention gave values of 82 N / mm 2 .
- the flexural strength of the cement according to the invention was about twice as high as that of known sulphate metallurgical cements.
- Sulphate metallurgical cement achieved a bending strength of 7 N / mm 2 , where against values of 14 N / mm 2 were achieved with the cement according to the invention.
- the cement according to the invention is characterized by a significantly lower tendency to shrink. While cracking was observed in metallurgical cements and conventional blast furnace slag mixed cements, cracking was largely excluded in the cement according to the invention due to the significantly lower tendency to shrink and was also not observed.
- the grinding fineness was determined in the course of the Blaine tests in accordance with ASTM standard C 204-55.
- the sulphate smelter cement used in the comparative experiments was ground up much more elaborately and was used with a fineness of 5000 cm / g, whereas the cement according to the invention used in the comparative experiments was ground only to 3000 cm 2 / g fineness.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0061197A AT404723B (en) | 1997-04-09 | 1997-04-09 | METHOD FOR PRODUCING SULFATE CEMENT OR SULFATE CEMENT ADDITIVES |
AT61197 | 1997-04-09 | ||
PCT/AT1998/000066 WO1998045218A2 (en) | 1997-04-09 | 1998-03-12 | Method for producing sulfate cement or sulfate cement aggregates |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0923506A2 true EP0923506A2 (en) | 1999-06-23 |
EP0923506A3 EP0923506A3 (en) | 1999-12-01 |
Family
ID=3495189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98909205A Withdrawn EP0923506A3 (en) | 1997-04-09 | 1998-03-12 | Method for producing sulfate cement or sulfate cement aggregates |
Country Status (22)
Country | Link |
---|---|
US (1) | US6139621A (en) |
EP (1) | EP0923506A3 (en) |
JP (1) | JP2000505776A (en) |
CN (1) | CN1229404A (en) |
AR (1) | AR010411A1 (en) |
AT (1) | AT404723B (en) |
AU (1) | AU725892B2 (en) |
BG (1) | BG62883B1 (en) |
BR (1) | BR9804812A (en) |
CA (1) | CA2257643A1 (en) |
CZ (1) | CZ424498A3 (en) |
HR (1) | HRP980137B1 (en) |
HU (1) | HUP0302627A2 (en) |
ID (1) | ID21227A (en) |
MA (1) | MA24518A1 (en) |
NZ (1) | NZ333268A (en) |
RU (1) | RU2163574C2 (en) |
SK (1) | SK168098A3 (en) |
TR (1) | TR199802561T1 (en) |
WO (1) | WO1998045218A2 (en) |
YU (1) | YU56198A (en) |
ZA (1) | ZA982824B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6409819B1 (en) * | 1998-06-30 | 2002-06-25 | International Mineral Technology Ag | Alkali activated supersulphated binder |
AT408653B (en) * | 1999-12-20 | 2002-02-25 | Tribovent Verfahrensentwicklg | METHOD FOR PRODUCING MERCHANT SLAG |
WO2001055457A1 (en) * | 2000-01-28 | 2001-08-02 | Holcim Ltd. | Method for producing pozzolanic binders for the cement industry from steel slags using a reduction metal bath |
JP3654122B2 (en) * | 2000-03-28 | 2005-06-02 | Jfeスチール株式会社 | Method for producing hardened slag |
US6666996B1 (en) | 2000-12-11 | 2003-12-23 | Tribovent Verfahrensentwicklung, Gmbh | Process for producing marl slags |
RU2444553C1 (en) * | 2010-12-29 | 2012-03-10 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Plugging composition for insulation of lost-circulation zones |
FI126049B (en) | 2013-09-12 | 2016-06-15 | Global Ecoprocess Services Oy | Method for treating metals |
CN105837152A (en) * | 2016-06-14 | 2016-08-10 | 安徽华业建工集团有限公司 | Building cement and preparation method thereof |
CN106587879B (en) * | 2016-12-12 | 2019-02-05 | 武汉中理环保科技有限公司 | A kind of method that slag stir-fry gypsum prepares gypsum dry mixed mortar |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE430629A (en) * | ||||
US2248032A (en) * | 1938-02-22 | 1941-07-01 | Ici Ltd | Manufacture of cements from calcium sulphate and blast furnace slag |
JPS5144536B2 (en) * | 1972-10-19 | 1976-11-29 | ||
DE2611889C3 (en) * | 1976-03-20 | 1978-11-02 | Ferdinand Dr.Rer.Mont. 6374 Steinbach Fink | Process for the production of binders from metallurgical waste |
NL173980C (en) * | 1976-11-05 | 1984-04-02 | Nederlandse Cement Ind | METHOD FOR EXTRACTING IRON FROM A SLAUGHTER OF THE OXY STEEL PREPARATION AND FORMING A RESIDUAL SLAUGHTER WITH USEFUL PROPERTIES. |
JPS5542250A (en) * | 1978-09-21 | 1980-03-25 | Osaka Cement | Swelling solidifying material |
JPS55102677A (en) * | 1979-01-29 | 1980-08-06 | Chiyoda Chem Eng & Constr Co Ltd | Improvement in strength of hydrous soft ground |
JPS5817556B2 (en) * | 1979-12-29 | 1983-04-07 | 千代田化工建設株式会社 | Method for increasing deodorizing strength of hydrated soft soil with bad odor |
US4443260A (en) * | 1982-06-14 | 1984-04-17 | Chiyoda Chemical Engineering & Constr., Co., Ltd. | Method for strengthening soft soil |
SU1085949A1 (en) * | 1982-07-09 | 1984-04-15 | Государственный Всесоюзный Научно-Исследовательский Институт Цементной Промышленности | Raw mix for producing sulfoaluminate clinker |
JPS60231445A (en) * | 1984-04-28 | 1985-11-18 | 日本磁力選鉱株式会社 | Use of highly basic steel slag |
JPS6117452A (en) * | 1984-07-02 | 1986-01-25 | 日本磁力選鉱株式会社 | Useful use of steel slag and coal ash |
SU1303575A1 (en) * | 1985-04-19 | 1987-04-15 | Липецкий политехнический институт | Binder |
US4652310A (en) * | 1985-11-20 | 1987-03-24 | Nippon Magnetic Dressing Co., Ltd. | Process for making a hardening agent for weak soil or sludge from steel making slag |
DE3609568A1 (en) * | 1986-03-21 | 1987-09-24 | Fink Gerdinand | Manufacture of a cement from converter steel slags |
JP2710359B2 (en) * | 1988-10-04 | 1998-02-10 | 電気化学工業株式会社 | Low alkali cement composition and water supply lining pipe |
SU1708788A1 (en) * | 1988-12-27 | 1992-01-30 | Научно-Исследовательский И Проектно-Технологический Институт По Разработке Машин, Механизмов И Оснастки Для Городского Хозяйства Г.Москвы | Binder |
US5273579A (en) * | 1990-06-19 | 1993-12-28 | Mitsubishi Mining And Cement Co., Ltd. | Quick setting compositions |
NL9201266A (en) * | 1992-07-14 | 1994-02-01 | Pelt & Hooykaas | METHOD FOR CONTROLLING THE COMPOSITION OF STEEL SNAILS. |
JPH06115998A (en) * | 1992-10-06 | 1994-04-26 | Nippon Cement Co Ltd | Production of hydraulic composition |
JPH10245555A (en) * | 1997-02-28 | 1998-09-14 | Mitsubishi Materials Corp | Cemental solidifier for organic soil |
-
1997
- 1997-04-09 AT AT0061197A patent/AT404723B/en not_active IP Right Cessation
-
1998
- 1998-03-12 TR TR1998/02561T patent/TR199802561T1/en unknown
- 1998-03-12 EP EP98909205A patent/EP0923506A3/en not_active Withdrawn
- 1998-03-12 WO PCT/AT1998/000066 patent/WO1998045218A2/en not_active Application Discontinuation
- 1998-03-12 CZ CZ984244A patent/CZ424498A3/en unknown
- 1998-03-12 BR BR9804812-0A patent/BR9804812A/en active Search and Examination
- 1998-03-12 CN CN98800449A patent/CN1229404A/en active Pending
- 1998-03-12 ID IDW990005A patent/ID21227A/en unknown
- 1998-03-12 CA CA002257643A patent/CA2257643A1/en not_active Abandoned
- 1998-03-12 JP JP10542129A patent/JP2000505776A/en active Pending
- 1998-03-12 RU RU99100300/03A patent/RU2163574C2/en active
- 1998-03-12 YU YU56198A patent/YU56198A/en unknown
- 1998-03-12 NZ NZ333268A patent/NZ333268A/en unknown
- 1998-03-12 AU AU63846/98A patent/AU725892B2/en not_active Ceased
- 1998-03-12 HU HU0302627A patent/HUP0302627A2/en unknown
- 1998-03-12 SK SK1680-98A patent/SK168098A3/en unknown
- 1998-03-12 US US09/202,063 patent/US6139621A/en not_active Expired - Fee Related
- 1998-03-16 HR HR980137A patent/HRP980137B1/en not_active IP Right Cessation
- 1998-04-02 MA MA25025A patent/MA24518A1/en unknown
- 1998-04-02 ZA ZA982824A patent/ZA982824B/en unknown
- 1998-04-08 AR ARP980101645A patent/AR010411A1/en unknown
-
1999
- 1999-01-06 BG BG103052A patent/BG62883B1/en unknown
Non-Patent Citations (1)
Title |
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See references of WO9845218A2 * |
Also Published As
Publication number | Publication date |
---|---|
EP0923506A3 (en) | 1999-12-01 |
HRP980137A2 (en) | 1999-02-28 |
ZA982824B (en) | 1998-10-05 |
AU725892B2 (en) | 2000-10-26 |
ATA61197A (en) | 1998-06-15 |
BG103052A (en) | 1999-09-30 |
BG62883B1 (en) | 2000-10-31 |
US6139621A (en) | 2000-10-31 |
NZ333268A (en) | 2000-07-28 |
WO1998045218A3 (en) | 1999-04-01 |
TR199802561T1 (en) | 1999-10-21 |
BR9804812A (en) | 1999-12-14 |
WO1998045218A2 (en) | 1998-10-15 |
AU6384698A (en) | 1998-10-30 |
CA2257643A1 (en) | 1998-10-15 |
CZ424498A3 (en) | 1999-07-14 |
AR010411A1 (en) | 2000-06-07 |
MA24518A1 (en) | 1998-12-31 |
HUP0302627A2 (en) | 2003-11-28 |
RU2163574C2 (en) | 2001-02-27 |
JP2000505776A (en) | 2000-05-16 |
CN1229404A (en) | 1999-09-22 |
ID21227A (en) | 1999-05-06 |
HRP980137B1 (en) | 2000-06-30 |
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