PL74952B2 - - Google Patents

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Publication number
PL74952B2
PL74952B2 PL15366072A PL15366072A PL74952B2 PL 74952 B2 PL74952 B2 PL 74952B2 PL 15366072 A PL15366072 A PL 15366072A PL 15366072 A PL15366072 A PL 15366072A PL 74952 B2 PL74952 B2 PL 74952B2
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PL
Poland
Prior art keywords
weight
cryolite
caf2
fluorspar
fluorite
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Application number
PL15366072A
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Polish (pl)
Priority date (The priority date 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 date listed.)
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Priority to PL15366072A priority Critical patent/PL74952B2/pl
Publication of PL74952B2 publication Critical patent/PL74952B2/pl

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Description

Pierwszenstwo: 24.02.1972 (P. 153660) Zgloszenie ogloszono: 30.05.1973 Opis patentowy opublikowano: 18.03.1975 74952 KI. 18a,5/02 MKP C21b 5/02 CZYTU.nIA Urzedu Pal*.- . ,,vego Twórcy wynalazku: Ryszard Adamczyk, Czeslaw Podrzucki, Andrzej Staronka, Stanislaw Strama Uprawniony z patentu tymczasowego: Akademia Górniczo-Hutnicza im.Stanislawa Staszica, Kraków (Polska) Srodek ochronny i rafinujacy do surówki wielkopiecowej Przedmiotem wynalazku jest srodek ochronny i rafinujacy znajdujacy zastosowanie przy odle¬ waniu surówki wielkopiecowej.Znany jest srodek ochronny i rafinujacy, zawie¬ rajacy wagowo 30 + 35% cementu portlandzkiego, 20 + 24% fluorytu, 18 + 25% rudy manganowej1, 10 + 15% glinu metalicznego, 6 + 8% saletry i 1 + 3% manganu metalicznego. Moze on równiez zawierac zamiast glinu metalicznego trociny. Sro¬ dek ten wkladany jest na dno formy odlewniczej, przed odlaniem do niej surówki.Opisany srodek rafinujacy powoduje powstawa¬ nie na sciankach form odlewniczych narostów oraz ozuzlen, w wyniku czego otrzymywane odlewy nie maja gladkiej i czystej powierzchni. Podczas od¬ bijania narostów i ozuzlen, scianki formy odlew¬ niczej ulegaja czesto uszkodzeniu.Celem wynalazku jest opracowanie srodka o- chronnego i rafinujacego, zezwalajacego na otrzy¬ manie odlewów o gladkiej i czystej powierzchni, oraz pozwalajacego na odlewanie do formy odlew¬ niczej nie oczyszczanej uprzednio z narostów i o- zuzlen.Cel ten zostal osiagniety przez wprowadzenie do formy odlewniczej, przed odlaniem surówki wiel¬ kopiecowej, mieszanki fluorytowo — kryolitowo — — sodowej w ilosci 0,02 + 0,04% wagowych w stosunku do ilosci metalu.Mieszanka fluorytowo — kryolitowo — sodowa zawiera wagowo: 90% fluorytu CaF2 oraz 10% 10 15 20 25 30 kryolitu 3 NaF • A1F3. Odmiane srodka ochron¬ nego i rafinujacego, wedlug wynalazku, stanowi mieszanka, zawierajaca wagowo 70% fluorytu CaF2, 5% kryolitu 3 NaF • A1F3 oraz 25% sody Na2C03.Kolejna odmiana srodka rafinujacego, wedlug wy¬ nalazku, jest mieszanka, zawierajaca wagowo 25% fluorytu CaF2, 5% kryolitu 3 NaF • A1F3 oraz 70% sody Na2 CO3.Srodek ochronny i rafinujacy, wedlug wynalaz¬ ku, umozliwia otrzymanie formy odlewniczej bez narostów i ozuzlen na scianach, w wyniku czego uzyskuje sie odlewy o gladkiej i czystej powierz¬ chni.Srodek ochronny i rafinujacy bedacy mieszanka fluorytowo — kryolitowo — sodowej, dodaje sie do formy odlewniczej, przed wlaniem do niej su¬ rówki wielkopiecowej. Ilosc mieszanki wynosi wa¬ gowo 0,02 + 0,04% w stosunku do ilosci metalu i jest odbierana w zaleznosci od stopnia zasadowo¬ sci zuzla wielkopiecowego. Jezeli stopnien zasado¬ wosci wynosi okolo 1,1 wówczas dodaje sie 0,02%, natomiast jezeli stopien zasadowosci wynosi oko¬ lo 1,3, wówczas dodaje sie 0,04% wagowych mie¬ szanki.Do formy odlewniczej wprowadza sie mieszanke zawierajaca wagowo 90% fluorytu i 10% kryolitu.W przypadku powstania na sciankach formy od¬ lewniczej nieznacznych narostów i ozuzlen, wów¬ czas wprowadza sie do niej mieszanke, zawierajaca wagowo 70% fluorytu, 5% kryolitu i 25% sody. 74 95274 952 Natomiast przy duzej ilosci narostów i ozuzlen w formie odlewniczej, stosuje sie srodek, zawiera¬ jacy wagowo 25% fluorytu, 5% kryolitu i 70u/o sody. PLPriority: February 24, 1972 (P. 153 660) Application announced: May 30, 1973 Patent description was published: March 18, 1975 74952 KI. 18a, 5/02 MKP C21b 5/02 READ.NIA Pal Office * .-. Inventors of the invention: Ryszard Adamczyk, Czeslaw Podrzenieki, Andrzej Staronka, Stanislaw Strama. Authorized under the provisional patent: Stanisław Staszic AGH University of Science and Technology, Kraków (Poland) Protective and refining agent for blast furnace pig iron. It is used in the casting of pig iron. There is a known protective and refining agent, containing by weight 30 + 35% Portland cement, 20 + 24% fluorspar, 18 + 25% manganese ore1, 10 + 15% metallic aluminum, 6 + 8% saltpetre and 1 + 3% metallic manganese. It may also contain sawdust instead of metallic aluminum. This solid is placed on the bottom of the casting mold, before the pig iron is poured into it. The described refining agent causes the formation of deposits on the walls of the casting molds and ozone, as a result of which the resulting castings do not have a smooth and clean surface. The walls of the casting mold are often damaged during the removal of accretions and ozone. The aim of the invention is to develop a protective and refining agent that allows to obtain castings with a smooth and clean surface and allows pouring into a casting mold without The aim was achieved by introducing into the casting mold, before pouring the pig iron, a mixture of fluorite-cryolite-sodium in the amount of 0.02 + 0.04% by weight in relation to the amount of metal. The mixture of fluorite - cryolite - sodium contains by weight: 90% CaF2 fluorspar and 10% 10 15 20 25 30 cryolite 3 NaF • A1F3. A variation of the protective and refining agent according to the invention is a blend comprising 70% by weight of fluorspar CaF2, 5% by weight of cryolite 3 NaF · A1F3 and 25% of sodium Na2CO3. Another variation of the refining agent according to the invention is a blend containing 25% by weight % CaF2 fluorite, 5% cryolite 3 NaF • A1F3 and 70% sodium Na2 CO3. The protective and refining agent, according to the invention, allows to obtain a casting mold without build-up and ozone on the walls, resulting in a cast with a smooth and clean surface The preservative and refining agent, which is a mixture of fluorite-cryolite-sodium, is added to the casting mold before the blast furnace mixture is poured into it. The amount of the blend is 0.02 + 0.04% by weight with respect to the amount of metal and is obtained depending on the degree of alkalinity of the blast furnace slug. If the degree of basicity is about 1.1 then 0.02% is added, and if the degree of basicity is about 1.3 then 0.04% by weight of the mixture is added. The mold is filled with a mixture containing by weight 90% of fluorspar and 10% of cryolite. In the event of slight accretions and ozone formation on the walls of the casting mold, a mixture of 70% by weight of fluorspar, 5% of cryolite and 25% of soda is introduced into it. 74 95 274 952 On the other hand, in the case of large amounts of accretions and ozone in the casting mold, an agent containing 25% by weight of fluorite, 5% of cryolite and 70% of soda is used. PL

Claims (3)

Zastrzezenia patentowe 1. Srodek ochronny i rafinujacy do surówki wielkopiecowej, na bazie kryolitu, fluorytu i sody, 10 znamienny tym, ze zawiera 90% fluorytu (CaF2 oraz 10% kryolitu (3NaF • AIF3), który wprowa¬ dza sie do formy odlewniczej w ilosci 0,02 + 0,4% wagowych w stosunku do metalu.Claims 1. A protective and refining agent for pig iron based on cryolite, fluorspar and soda, characterized in that it contains 90% fluorspar (CaF2 and 10% cryolite (3NaF • AIF3) which is introduced into the casting mold in amounts of 0.02 + 0.4% by weight with respect to the metal. 2. Odmiana srodka wedlug zastrz. 1, znamienna tym, ze zawiera wagowo 70% fluorytu (CaF2), 52% kryolitu (3NaF • A1F3) oraz 25% sody (Na2C03).2. The variety of the agent according to claim The composition of claim 1, characterized in that it comprises 70% by weight of fluorite (CaF2), 52% by weight of cryolite (3NaF • A1F3) and 25% by weight of soda (Na2CO3). 3. Odmiana srodka wedlug zastrz. 1, znamienna tym, ze zawiera wagowo 25% fluorytu (CaF2), 5% kryolitu (3NaF • AIF3) oraz 70% sody (Na2COs). W.SD.Kart. C/1503/74, 110+15, A4 Cena 10 zl PL3. The variant of the agent according to claim The composition of claim 1, comprising 25% by weight of fluorite (CaF2), 5% by weight of cryolite (3NaF • AIF3) and 70% by weight of soda (Na2COs). W.SD.Card. C / 1503/74, 110 + 15, A4 Price PLN 10 PL
PL15366072A 1972-02-24 1972-02-24 PL74952B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15366072A PL74952B2 (en) 1972-02-24 1972-02-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL15366072A PL74952B2 (en) 1972-02-24 1972-02-24

Publications (1)

Publication Number Publication Date
PL74952B2 true PL74952B2 (en) 1974-12-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL15366072A PL74952B2 (en) 1972-02-24 1972-02-24

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PL (1) PL74952B2 (en)

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