CS226307B1 - Portland clinker firing composition - Google Patents
Portland clinker firing composition Download PDFInfo
- Publication number
- CS226307B1 CS226307B1 CS823296A CS329682A CS226307B1 CS 226307 B1 CS226307 B1 CS 226307B1 CS 823296 A CS823296 A CS 823296A CS 329682 A CS329682 A CS 329682A CS 226307 B1 CS226307 B1 CS 226307B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- portland clinker
- raw material
- mixture
- slag
- clinker firing
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims description 28
- 238000010304 firing Methods 0.000 title description 9
- 239000002994 raw material Substances 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 14
- 235000019738 Limestone Nutrition 0.000 claims description 7
- 239000006028 limestone Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 230000009257 reactivity Effects 0.000 description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 150000004645 aluminates Chemical class 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 2
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 2
- 238000004455 differential thermal analysis Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 2
- 235000019976 tricalcium silicate Nutrition 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001678 gehlenite Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
Description
Vynález sa týká surovinovej zmesi pře výpal portlandského slinku.The invention relates to a raw material mixture for firing Portland clinker.
Je známa surovinová zmes pre výpal portlandského slinku zložená z vápence, drvenej vysokopecnej trosky a oceliarskej trosky. Při využití koncentrátov železných rúd v hutiach dochádza k poklesu obsahu oxidu hlinitého v kusovéj troske a tým k zníženiu obsahu zložiek, ktoré zvyšujú reaktívnost suroviny, čím sa značné zhoršila páliteTnosť tejto surovinovej zmesi. Z dSvodu zlepšenia péliteTnosti suroviny, zvýšenie výkonu rotačnej pece a zníženia mernej spotřeby paliva a elektrickej energie sa znížilo sýtenie vápnom, takže surovinová zmes sa skládá v tomto hmotnostnom pomere: 56 až 58 % vápenca, 32 až 33 % drvenej vysokopecnej trosky a ,0 až 11 % oceliarskej trosky, pričom sýtenie vápnom tejto suroviny Kgjjp = = 78, silikátový modul M = 2,1 a aluminátový modul MA = 0,96. Slinok vyrobený z takejto suroviny má nízký obsah trikalciumsilikátu a trikalcium-aluminátu a z něho vyrobený cement má nižšie počiatočné pevnosti a tiež ich pomalý nárast.There is a known raw material mixture for firing Portland clinker consisting of limestone, crushed blast furnace slag and steel slag. The use of iron ore concentrates in metallurgical plants decreases the alumina content of the lump slag and thus reduces the content of components which increase the reactivity of the feedstock, thereby greatly deteriorating the burnability of the feedstock mixture. In order to improve the care of the raw material, increase the rotary kiln performance and reduce the specific fuel and electricity consumption, lime saturation has been reduced, so that the raw material mixture consists of the following weight ratio: 56 to 58% limestone, 32 to 33% crushed blast furnace slag. 11% of the steel slag, with the lime saturation of this raw material Kg β = = 78, the silicate modulus M = 2.1 and the aluminate modulus M A = 0.96. The clinker produced from such a raw material has a low content of tricalcium silicate and tricalcium aluminate, and the cement produced therefrom has lower initial strengths and also a slow increase thereof.
Uvedené nedostatky odstraňuje surovinová zmes podl’a vynálezu, ktorej podstatou je, že sa skládá v hmotnostnom pomere: z 53 až 80 % vápenca, 15 až 33 % drvenej vysokopecnej trosky, 3 až 10 í hmot. oceliarskej trosky a z 1 až 10 % odpadového šamotu vybúraného po opotřebení výmuroviek priemyselných pecí.These drawbacks are overcome by the raw material composition according to the invention, which consists in that it consists in a weight ratio of: 53 to 80% of limestone, 15 to 33% of crushed blast furnace slag, 3 to 10% by weight. steel slag and from 1 to 10% of chamotte waste after wear of industrial furnace linings.
Použitie odpadového šamotu vybúraného po opotřebení výmuroviek priemyselných pecí ako zložky surovinovej zmesi pre výpyl portlandského slinku zvýši obsah oxidu hlinitého v aurovinovej zmesi a tým zvýši jej reaktívnost a zlepší páliteTnosť. Oxid hlinitý sa v šamote nachádza v řízných formách: mullit - 3Al203 . 2Si0g, silimanit - A12O^ . Si02, alebo ako korund - nAl2O^.The use of chamotte waste after wear of the furnace linings as a component of the Portland clinker rinse feedstock will increase the alumina content of the aurovine mix and thereby increase its reactivity and improve the burnability. The alumina is present in fireclay in the form of mullite - 3Al 2 0 3 . 2Si0g, silimanite - Al 2 O 4. SiO 2 , or as corundum - nAl 2 O 4.
Hoci sa jedná o stabilně zlúčeniny, pri styku s vysokozásaditými látkami a taveninami bohatými na oxid vápenatý vzniká z nich anortit - CaO . AlgO^ · 2SiO2 a najma gehlenit - 2CaO . AlgOj . SiOg. Novovzniknutá zlúčeniny tvoria navzájom a so slinkovými minerálmi nízkotaviteTné eutektlká, napr. 2CaO . AlgO-j . SiO2 - CaO . AlgO-j . 2SiOg - CaO . SiOg - 1 265 °C, alebo 2CaO . AlgO-j . SiOg - 2Ca0 . SiOg - CaO . SiOg - 1 380 °C a pod., čím dochádza k zvýšeniu množstva taveniny, k poklesu teploty jej vzniku a tým k zvýšeniu reaktivity takejto surovinovej zmesi.Although they are stable compounds, anortite - CaO is formed from contact with high-alkaline substances and melt rich in calcium oxide. Algo ^ · 2 SiO 2 and especially gehlenite - 2CaO. AlgOj. SiO. The newly formed compounds form low melting eutectics with each other and with clinker minerals, e.g. 2CaO. AlgO-j. SiO 2 - CaO. AlgO-j. 2SiOg - CaO. SiO 2 - 1265 ° C, or 2 CaO. AlgO-j. SiOg - 2Ca0. SiOg - CaO. SiOg - 1380 ° C and the like, thereby increasing the amount of melt, decreasing the temperature of its formation and thereby increasing the reactivity of such a raw material mixture.
Hlavně výhody surovinovej zmesi pre výpal portlandskáho slinku podl’a vynálezu sú:In particular, the advantages of the raw material mixture for firing Portland clinker according to the invention are:
- zvýSenie reaktívnosti surovinovej zmesiincreasing the reactivity of the raw material mixture
- možnost výroby slinku s vyšším obsahom trikalciumsilikátu a trikalciumaluminátu a teda s vyššími počiatočnými pevnostami a ich rýchlejším nárastom- possibility of production of clinker with higher content of tricalciumsilicate and tricalciumaluminate and thus with higher initial strengths and their faster growth
- zvýšenie výkonu rotačnej pece a zníženie mernej spotřeby paliva a elektrickej energie- increasing the power of the rotary kiln and reducing specific fuel and electricity consumption
- možnost dopředu si zvolit 3 kvalitativně parametre surovinovej zmesi, (napr. sýtenie vápnom, silikátový a hlinitanový modul) oproti 2·a 3-zložkovej zmesi- possibility to choose in advance 3 qualitative parameters of the raw material mixture (eg lime saturation, silicate and aluminate module) compared to 2 · and 3-component mixture
- využitie priemyselného odpadu, ktorý sa doslal’ nevyužívá a zaberá vel’ké ploohy aj poTnohospodárskej pčdy, čo zlepší životné prostredie v oblasti jeho deponovania.- the recovery of industrial waste, which is not used and occupies large areas of agricultural land, which will improve the environment for its deposit.
Vypočítané množstvá jednotlivých zložiek surovinovej zmesi pre výpal portlandskáho slinku podTa vynálezu sa kontinuálně dávkujú do surovinovej mlyniee, kde sa súčasne melú a čiastočne homogenlzujú. Po zomletí a homogenizácii dostaneme surovinovú múčku připravená na výpal portlandskáho slinku.The calculated amounts of the individual components of the Portland clinker firing composition according to the invention are continuously metered into the raw mill, where they are simultaneously ground and partially homogenized. After grinding and homogenization, we get raw meal prepared for burning of Portland clinker.
PříkladExample
Boli zadané následovně kvalitativně parametre 4-zložkovej surovinovej zmesi pře výpal portlandskáho slinku: sýtenie vápnom KSLp = 97, silikátový modul Mg = 2,3 a aluminátový modul M^ = 1,7. Surovinová zmes s týmito kvalltatívnymi parametrami je složená v hmotnostnom pomere: z 62,27 % vápenca; 26,35 % drvenej vysokopecnej trosky; 6,24 % ooeliarskej trosky a z 5,14 % odpadového šamotu - označenie zmes A.The following parameters were qualitatively entered for the 4-component raw material mixture for firing of Portland clinker: lime saturation K SLp = 97, silicate modulus Mg = 2.3 and aluminate modulus M ^ = 1.7. The raw material mixture with the following parameters is composed in a weight ratio of: 62.27% of limestone; 26.35% crushed blast furnace slag; 6.24% ooeliar slag and 5.14% refractory waste - labeled mixture A.
Pře porovnanie reaktívnosti a pállteTnosti sa vypočítala 3-zložková surovinová zmes so sýtením vápnom KgLp = 96 a so silikátovým modulom Mg = 2,3, ktorá bola zložená v hmotnostnom pomere: 55,08 % vápenec; 33,8 % drvená vysokopecná troska a 11,04 % oceliarska troska. Pre uvedený poměr jednotlivých zložiek bol vypočítaný aluminátový modul = 0,79 - označenie zmes B.To compare reactivity and palpitability, a 3-component feed mixture with a lime saturation K gLp = 96 and a silicate modulus Mg = 2.3 was calculated in a weight ratio of: 55.08% limestone; 33.8% crushed blast furnace slag and 11.04% steel slag. The aluminate modulus = 0.79 - designation mixture B was calculated for the ratio of the individual components.
Obidve surovinová zmesi boli po zomletí a zhomogenizovaní podrobené skúškam na zahrievacom mikroskope a diferenčnej termickej analýze za rovnakých podmienok. Zo zahrievacieho mikroskopu boli určené počiatky slinovania pre zmes A - 1 170 °C a pre zmes B - 1 225 °C.Both feed mixtures were subjected, after milling and homogenization, to a heating microscope and differential thermal analysis under the same conditions. From the heating microscope, the sintering starts were determined for mixture A-1170 ° C and for mixture B-1225 ° C.
Z diferenčnej termickej analýzy sa získali teploty endotermických minim, ktoré charakterizujú tvorbu tekutáj fázy v surovinovej zmesi pre zmes A - 1 360 °C a pre zmes B - 1 400 °C. Z uvedeného vldlet, že 4-zložkové surovinové zmes pre výpal portlandskáho slinku s obsahom odpadového šamotu začína slinovat a tvořit tekutá fázu pri nižších teplotách ako surovinová zmes bez tejto přísady, a teda je reaktívnejšia a 1’ahšia páliteTná. Priemerné chemické zloženie jednotlivých zložiek surovinovej zmesi v hmot. % udává tabulka:Differential thermal analysis yields endothermic minima temperatures that characterize the fluid phase formation in the feedstock mixture for mixture A-1360 ° C and for mixture B-1400 ° C. Thus, the 4-component feedstock mixture for Portland clinker firing containing refractory clay starts to sinter and form a liquid phase at lower temperatures than the feedstock without this additive, and thus is more reactive and less flammable. Average chemical composition of individual components of the raw material mixture in mass. % is given in the table:
226307.226,307th
Surovinová zmes pre výpal portlandského slinku podl’a vynálezu sa mdže použiť vo všetkýeh závodooh na výpal portlandského slinku, najma v blízkosti prevádzok, kde je dostatok jej jednotlivých zložiek.The raw material for Portland clinker firing according to the invention can be used in all Portland clinker firing plants, especially near plants where there are enough of its individual components.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS823296A CS226307B1 (en) | 1982-05-07 | 1982-05-07 | Portland clinker firing composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS823296A CS226307B1 (en) | 1982-05-07 | 1982-05-07 | Portland clinker firing composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS226307B1 true CS226307B1 (en) | 1984-03-19 |
Family
ID=5372586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS823296A CS226307B1 (en) | 1982-05-07 | 1982-05-07 | Portland clinker firing composition |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS226307B1 (en) |
-
1982
- 1982-05-07 CS CS823296A patent/CS226307B1/en unknown
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