NO842809L - PROCEDURE FOR FLUMPING BASKET FOAM - Google Patents
PROCEDURE FOR FLUMPING BASKET FOAMInfo
- Publication number
- NO842809L NO842809L NO842809A NO842809A NO842809L NO 842809 L NO842809 L NO 842809L NO 842809 A NO842809 A NO 842809A NO 842809 A NO842809 A NO 842809A NO 842809 L NO842809 L NO 842809L
- Authority
- NO
- Norway
- Prior art keywords
- fly ash
- nitrite
- foaming
- foamed
- mixture
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 15
- 239000006260 foam Substances 0.000 title claims description 6
- 239000010881 fly ash Substances 0.000 claims description 26
- 238000005187 foaming Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 8
- 150000001447 alkali salts Chemical class 0.000 claims description 8
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000004088 foaming agent Substances 0.000 claims description 6
- NHWNVPNZGGXQQV-UHFFFAOYSA-J [Si+4].[O-]N=O.[O-]N=O.[O-]N=O.[O-]N=O Chemical compound [Si+4].[O-]N=O.[O-]N=O.[O-]N=O.[O-]N=O NHWNVPNZGGXQQV-UHFFFAOYSA-J 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 description 6
- 239000003513 alkali Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- PBZHKWVYRQRZQC-UHFFFAOYSA-N [Si+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O Chemical compound [Si+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PBZHKWVYRQRZQC-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- -1 silicon nitrile Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
- C04B18/085—Pelletizing
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/16—Particulate material, e.g. comminuted scrap
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
Oppfinnelsen vedrører en fremgangsmåte til oppskumming av flyveaske. The invention relates to a method for foaming fly ash.
Flyveaske fremkommer i store mengder ved moderne kullkraft-verk som er støvfyrt. en anvendelse av denne flyveaske som tilslagsstoff ved betongfremstillingen er bare begrenset mulig og den forøvrig nødvendige deponi av denne flyveaske er forbundet med meget arbeide. Tilsammen kan det sågar sies at utnyttelsen respektiv fjerning av flyveaske er forbundet med betraktelig økologiske problemer. Fly ash is produced in large quantities by modern coal-fired power plants that are dust-fired. the use of this fly ash as an aggregate in the production of concrete is only possible to a limited extent and the otherwise necessary disposal of this fly ash is associated with a lot of work. Taken together, it can even be said that the utilization or removal of fly ash is associated with considerable ecological problems.
Oppfinnelsens oppgave er å tilveiebringe en fremgangsmåteThe task of the invention is to provide a method
som kan tilføre flyveasken som verdifullt grunnstoff til en videreanvendelse. Fremgangsmåten ifølge oppfinnelsen skal videre spesielt være i stand til av flyveasken å tilveiebringe som betongtilslagsstoff anvendbare, strukturlegemer som er lette, skal være økonomisk fremstillbare og which can add the fly ash as a valuable raw material for further use. Furthermore, the method according to the invention must be particularly able to provide, from the fly ash, structural bodies which can be used as concrete aggregates, which are light, must be economically manufacturable and
som også kan være anvendbare som isolasjonslegemer også ved meget høye temperaturer på mer enn 1000°C. which can also be used as insulating bodies even at very high temperatures of more than 1000°C.
Oppgaven løses ifølge oppfinnelsen ved at det til flyveasken settes silisiumnitrit eller -karbid og i vann opp- The task is solved according to the invention by adding silicon nitrite or -carbide to the fly ash and in water
løste alkalisalter og blandingen oppskummes ved flyveaskens mykningstemperatur. dissolved alkali salts and the mixture is foamed at the softening temperature of the fly ash.
Fordelaktig kan flyveasken som ytterligere skummiddel tilsettes metalloksyder som Mn02eller Fe20^og som alkalisalt kan det anvendes økonomisk fordelaktig Na2C0^(soda). Den skummede blanding kan derved bestå av de minste partikler. Advantageously, the fly ash can be added as an additional foaming agent to metal oxides such as Mn02 or Fe20^ and as an alkali salt the economically advantageous Na2C0^ (soda) can be used. The foamed mixture can thus consist of the smallest particles.
Oppgaven ifølge oppfinnelsen kan fordelaktig spesielt løses ved at som silisiumnitrat tilbalndes ferrosilisiumnitrit. The problem according to the invention can advantageously be solved in particular by adding ferrosilicon nitrite as silicon nitrate.
Mykningstemperaturen ligger fortrinnsvis over 1250 og under 1400°C, fordelaktig utgjør den ca. 1330-1340°C. The softening temperature is preferably above 1250 and below 1400°C, advantageously it is approx. 1330-1340°C.
Det er. for fagmannen overraskende at det frembragte skum-struktur.legemet har en meget liten t etthet som kan ligge mellom 0,25 og 0,50 g/cm<3>. Overraskende for fagfolk har ifølge oppfinnelsen frembragte strukturlegemer en meget høy trykkfasthet. og da de har et lite alkaliinnhold er .de spesielt egnet som betongtilslagsstoffer, da de kan betegnes- som betong-forenlige... . - - - • _.; , ..Ytterligere .utførelser av fremgangsmåten ifølge oppfinnelsen fremgår av de nedenfor angitte underkrav. .Fremgangsmåten ..ifølge oppf in ne Isen- -utføres således, at- etter blanding av flyveaske, spesielt siste trinn av filtreringen, med 2-4 vekt-% ferrosilisiumnitrit oppskummes blandingen ,i_ .egnede .beholdere eller-, oyner;y^d temperaturer på-, mer enn 1250°C.. It is. surprisingly for the person skilled in the art, the produced foam structure has a very low density which can lie between 0.25 and 0.50 g/cm<3>. Surprisingly for professionals, structural bodies produced according to the invention have a very high compressive strength. and as they have a low alkali content, they are particularly suitable as concrete aggregates, as they can be described as concrete-compatible... . - - - • _.; Further embodiments of the method according to the invention appear from the subclaims stated below. The method according to Isen's invention is carried out in such a way that, after mixing fly ash, especially the last stage of the filtration, with 2-4% by weight of ferrosilicon nitrite, the mixture is foamed in suitable containers or tanks. d temperatures of-, more than 1250°C..
Det har vist seg at flyveaske fra siste filtreringstrinn er.spesielt lett å skumme, flyveasken fra de andre filtreringstrinn respektiv blandingen av flyveaske fra forskjellige filtreringstrinn er likeledes skumbar, enskjønt det under tiden ved svakt avvikende temperaturer. Skumteperaturen er imidlertid å innstille alt etter typen av flyveaske som i. avhengighet av anvendt kull av forskjellig sammensetning. Den ligger imidlertid generelt over 1250 og under 1400°C, f.eks. mellom 1330 og 1340°C. It has been shown that fly ash from the last filtration stage is particularly easy to foam, the fly ash from the other filtration stages or the mixture of fly ash from different filtration stages is likewise foamable, albeit at slightly different temperatures. However, the foaming temperature is to be set according to the type of fly ash, which i. depends on the used coal of different composition. However, it is generally above 1250 and below 1400°C, e.g. between 1330 and 1340°C.
Det er vesentlig for oppfinnelsen at skurateraperaturen som er..,å_bestemme.-empirisk ■ al t - etter typen - av anvendt.;-. f_lyveaske, overholdes nøyaktig. Under skumningstemperaturen er flyveasken .enda ikke tilstrekkelig myk, over det meget lille skumtemperaturområdet er flyveasken imidlertid allerede så flytende at skummidlet unnviker uten å danne de ønskede porer. It is essential for the invention that the scrub treatment which is..,to_be_determined.-empirically ■ al t - according to the type - of used.;-. f_lyveaske, is observed exactly. Below the foaming temperature, the fly ash is not yet sufficiently soft, above the very small foam temperature range, however, the fly ash is already so fluid that the foaming agent escapes without forming the desired pores.
Blandingen av flyveaske og de nevnte 2-3 vekt-% ferrosilisiumnitrit (alt etter flyveaskens type kan det også anvendes avvikende vektmengder av skummiddel) fylles i former eller has på et sinterbånd og utsettes deretter i kort tid for den fastlagte skumtemperatur. Etter oppskummingen senkes temperaturen meget hurtig og deretter kan de frembragte skum- eller strukturlegemer isoleres og overlates til seg selv for å avkjøle langsomt. The mixture of fly ash and the aforementioned 2-3% by weight of ferrosilicon nitrite (depending on the type of fly ash, deviating weight amounts of foaming agent can also be used) is filled into molds or pressed onto a sinter belt and then exposed for a short time to the determined foaming temperature. After the foaming, the temperature is lowered very quickly and then the produced foam or structural bodies can be isolated and left to themselves to cool slowly.
De frembragte strukturlegemer kan frembringes som fint granu-lat, dvs. såkalt lettsand, idet det kan finne anvendelse som fallsjakter, hvirvelsjikt, reaktorer, digler, former, ovner eller andre egnede midler. The structural bodies produced can be produced as fine granulate, i.e. so-called light sand, as it can be used as fall chutes, fluidized bed, reactors, crucibles, moulds, ovens or other suitable means.
De nye strukturlegemer kan finne anvendelse somm isolasjons-midler ved tekniske gjenstndser, f.eks. industriovner også ved meget høye temperaturer inntil 1200°C. The new structural bodies can be used as insulating materials for technical objects, e.g. industrial ovens also at very high temperatures of up to 1200°C.
Da de frembragte strukturlegemer som kan ha form av små kuler, omtrent ikke har alkaliinnhold, er de som betong-forenlige også anvendbare som betongtilslagsstoff. Since the produced structural bodies, which can be in the form of small balls, have almost no alkali content, they are compatible with concrete and can also be used as concrete aggregates.
Vekten av de frembragte strukturlegemer kan innstillesThe weight of the generated structural bodies can be set
ved skumtemperaturen sammen med mengden av ferrosilisiumnitrit, den ligger mellom 0,2 og 0,5 g/cm3 . at the foaming temperature together with the amount of ferrosilicon nitride, it lies between 0.2 and 0.5 g/cm3 .
Anvendbar er ifølge oppfinnelsen ikke bare flyveaske fra siste filtreringstrinn, men overraskende for fagfolk, According to the invention, not only fly ash from the last filtration step can be used, but surprisingly for professionals,
også slike fra de tidligere filtreringstrinn.also those from the previous filtering steps.
Overraskende for fagfolk har det imidlertid videre vistSurprisingly to professionals, however, it has further shown
seg at som skummiddel ikke bare kan anvendes ferrosilisiumnitrit, men at også silisiumnitril eller- karbid gir gode resultater, når disse anvendes i forbindelse med vannopp-løselige alkalisalter som er oppløselige i vann og når det spesielt til blandignen av skummiddel settes et metall-oksyd somMn02eller Fe-^O^ . Som alkalisalt kan det derved fortrinnsvis anvendes Na2CO^(soda). Vekten av ferrosilisiumnitrit, silisiumnitrit eller -karbid utgjør da bare ca. 1% av flyveasken som skal skummes, vekten av de øvrige tilslagsstoffer som skummiddel beveger seg i samme It can be said that not only ferrosilicon nitrite can be used as a foaming agent, but that silicon nitrile or carbide also gives good results, when these are used in conjunction with water-soluble alkali salts that are soluble in water and when a metal oxide such as Mn02 or Fe-^O^ . As an alkali salt, Na2CO3 (soda) can therefore preferably be used. The weight of ferrosilicon nitrite, silicon nitrite or carbide then amounts to only approx. 1% of the fly ash to be foamed, the weight of the other aggregates as foaming agent moves in the same
størrelsesorden, dvs., maksimalt noen prosent.order of magnitude, i.e. a few percent at most.
Overraskende for fagfolk er det i denne forbindelse at vannet ikke bare er av betydning som oppløsningsmiddel for de anvendte alkalisalter. men også selv sørger for en forbedret skumreak-s jon. In this connection, it is surprising to those skilled in the art that the water is not only important as a solvent for the alkali salts used. but also itself ensures an improved foaming reaction.
Som alkalisalt kommer det på-.tale valle vannoppløseli.ge og eventuelt ■ også uoppløselige .forbindelser fra alkalimetaller, idet spesielt litium, natrium og kaliumsalter er av betydning. Disse alkalimetaller kan imidlertid tilsettes i en ytterligere utførelse _ ifølge. ;oppf:innelsen .-.også..som : nitrat / :borat, . sulfat eller i annen form. As alkali salts, water-soluble and possibly also insoluble compounds from alkali metals are mentioned, lithium, sodium and potassium salts being especially important. However, these alkali metals can be added in a further embodiment _ according to. the invention .-.also..as : nitrate / :borate, . sulfate or in another form.
Ved anvendelse av soda ligger mengden av dette ved denWhen using soda, the amount of this lies with it
samlede vekt av. blandingen som skal skummes ved ca. 1,8-2%. total weight of. the mixture to be foamed at approx. 1.8-2%.
Da fremgangsmåten ifølge■ oppfinnelsen er enkel å gjennomføre og formår å omdanne et tidligere avfallsstoff til et høyverdig bygningsstoff, kan.det tales :om en idell løsning av det be-stående problem.- As the method according to the invention is easy to implement and manages to convert a former waste material into a high-quality building material, it can be said to be an ideal solution to the existing problem.
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3324936A DE3324936A1 (en) | 1983-07-11 | 1983-07-11 | Process for foaming fly ash |
| DE19833339381 DE3339381A1 (en) | 1983-10-29 | 1983-10-29 | Process for foaming fly ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO842809L true NO842809L (en) | 1985-01-14 |
Family
ID=25812202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO842809A NO842809L (en) | 1983-07-11 | 1984-07-10 | PROCEDURE FOR FLUMPING BASKET FOAM |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0148915A1 (en) |
| AU (1) | AU3103784A (en) |
| DK (1) | DK337484A (en) |
| FI (1) | FI842679A (en) |
| IT (1) | IT1237347B (en) |
| MX (1) | MX172618B (en) |
| NO (1) | NO842809L (en) |
| WO (1) | WO1985000361A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1549427B1 (en) * | 2002-08-23 | 2017-11-01 | James Hardie Technology Limited | Method for producing synthetic hollow microspheres |
| CN1805783A (en) * | 2003-05-16 | 2006-07-19 | 詹姆士·哈代国际金融公司 | Methods for producing low density products |
| US8993462B2 (en) | 2006-04-12 | 2015-03-31 | James Hardie Technology Limited | Surface sealed reinforced building element |
| US9796624B1 (en) | 2017-01-31 | 2017-10-24 | Saudi Arabian Oil Company | Foam concrete with oil ash |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2948948A (en) * | 1956-12-10 | 1960-08-16 | Babcock & Wilcox Co | Fly ash reclamation by pelletizing |
| US3625723A (en) * | 1969-08-05 | 1971-12-07 | Horizons Research Inc | Foamed ceramic comprising fly ash and phosphoric acid |
| SE364699B (en) * | 1972-07-13 | 1974-03-04 | Cementa Ab | |
| AT369723B (en) * | 1979-10-08 | 1983-01-25 | Hatschek Zementwerke Ag H | METHOD FOR PRODUCING A NEW BUILDING MATERIAL |
| DE3009600C2 (en) * | 1980-03-13 | 1983-07-07 | Schott Glaswerke, 6500 Mainz | Process for the production of foam glass and foam glass ceramic |
-
1984
- 1984-07-04 FI FI842679A patent/FI842679A/en not_active Application Discontinuation
- 1984-07-05 EP EP84902705A patent/EP0148915A1/en not_active Withdrawn
- 1984-07-05 WO PCT/EP1984/000204 patent/WO1985000361A1/en not_active Application Discontinuation
- 1984-07-05 AU AU31037/84A patent/AU3103784A/en not_active Abandoned
- 1984-07-10 DK DK337484A patent/DK337484A/en not_active Application Discontinuation
- 1984-07-10 NO NO842809A patent/NO842809L/en unknown
- 1984-07-10 MX MX20196484A patent/MX172618B/en unknown
- 1984-07-11 IT IT2183084A patent/IT1237347B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT1237347B (en) | 1993-05-31 |
| FI842679A (en) | 1985-01-12 |
| FI842679A0 (en) | 1984-07-04 |
| MX172618B (en) | 1994-01-03 |
| IT8421830A0 (en) | 1984-07-11 |
| DK337484A (en) | 1985-01-12 |
| EP0148915A1 (en) | 1985-07-24 |
| AU3103784A (en) | 1985-02-07 |
| WO1985000361A1 (en) | 1985-01-31 |
| DK337484D0 (en) | 1984-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7038708B2 (en) | Lightweight and high-strength ceramic particles and their manufacturing method | |
| RU2333176C1 (en) | Method for obtaining construction material | |
| CN103467018B (en) | Preparation method for preparing low-density oil well cementing cement briquettes by vermiculites | |
| CN109970456A (en) | The recycling of aluminium lime-ash and reuse method | |
| CN108503371A (en) | A method of preparing foamed ceramic material using blast furnace slag and aluminous fly-ash | |
| CN107162010B (en) | The hydrated calcium silicate for synthesizing the method for hydrated calcium silicate and being synthesized by this method | |
| CN113072313B (en) | Method for preparing ecological concrete by cooperatively utilizing waste residues and wastewater in coal chemical industry | |
| Ivanov | Preparation and properties of foam glass-ceramic from diatomite | |
| CN103880360A (en) | Method of preparing oil well cement briquette from quartz ceramic closed-pore hollow microspheres | |
| CN103467016B (en) | Preparation method for preparing low-density oil well cement test block from composite ceramic microbeads | |
| CN110511053A (en) | A kind of foamed ceramic and preparation method thereof using ceramics squeezing mud production | |
| CN115028367A (en) | Method for preparing foam microcrystalline glass from secondary aluminum ash | |
| NO842809L (en) | PROCEDURE FOR FLUMPING BASKET FOAM | |
| CN103435307B (en) | Method for preparing low-density oil well cement briquettes by using hafnium carbide microbeads | |
| CN103467017B (en) | Method for preparing low-density oil well cementing cement briquette by using glass microsphere | |
| CN103408263B (en) | Preparation method for preparing low-density bond cement check block for oil well by microcrystal glass beads | |
| CN110467352A (en) | A kind of foam glass material and preparation method thereof | |
| RU2357933C2 (en) | Charge for production of glass foam | |
| CN106747609B (en) | Light building ceramsite and preparation method thereof | |
| CN113548842B (en) | Method for preparing baking-free brick by using ash | |
| JPH11116299A (en) | Artificial lightweight aggregate and its production | |
| CN103408264A (en) | Method for preparing low-density cement testing block for oil well cementation by using tantalum carbide microbeads | |
| JP6614537B2 (en) | Method for manufacturing closed foam tile and closed foam tile | |
| CN113277738A (en) | Artificial volcanic rock calcined by using red mud and steel slag as main raw materials and preparation method thereof | |
| CN112028502A (en) | Method for directly preparing foaming material by using blast furnace slag |