Uvod v postopek taljenja kalcijeve silicijeve zlitine v električni peči

May 17, 2024Pustite sporočilo

Kalcijeva silicijeva zlitina je idealen deoksidizator in razžveplalnik, ki se trenutno uporablja v proizvodnem procesu visokokakovostnega jekla, posebnega jekla in posebnih zlitin. Uporablja se tudi kot cepivo za lito železo in dodatek pri proizvodnji nodularne litine. Tako kalcij kot silicij imata močno afiniteto s kisikom. Zlasti kalcij ima močno afiniteto ne samo s kisikom, temveč tudi z žveplom in dušikom. Kalcijeva silicijeva zlitina nima samo močne deoksidacijske sposobnosti, produkti deoksidacije pa so enostavni za plavanje in izpust, ampak lahko tudi izboljšajo lastnosti jekla in izboljšajo žilavost, udarno žilavost in fluidnost jekla.

 

Calcium silicon alloy is an ideal deoxidizer and desulfurizer currently used in the production process of high-quality steel, special steel and special alloys. It is also used as an inoculant for cast iron and an additive in the production of ductile iron. Both calcium and silicon have strong affinity with oxygen. Calcium, in particular, has a strong affinity not only with oxygen, but also with sulfur and nitrogen. Calcium silicon alloy not only has strong deoxidizing ability, and the deoxidation products are easy to float and be discharged, but also can improve the properties of steel and improve the toughness, impact toughness and fluidity of steel.   The role of calcium silicate blocks in steel smelting is mainly reflected in the following aspects:  1.Desulfurization: The silicon and calcium in the calcium silicate block have strong reducing properties and can react with the oxides in the molten steel to generate volatile gas hydrogen sulfide (H2S), thereby reducing and volatilizing the sulfur in the molten steel. Go out to achieve the purpose of desulfurization and improve the quality of steel.  2.Deoxidation: The calcium in the calcium silicate block reacts with the oxides in the molten steel to form calcium oxide, and participates in the formation of the oxide envelope of the steel, thereby reducing the oxygen content in the molten steel, thereby improving the purity and purity of the steel. strength.  3. Alloy adjustment effect: Silicon and calcium in calcium silicate blocks are both reducing agents and alloy elements. Adding calcium silicate blocks to molten steel can adjust the non-metal content in the molten steel and cause changes in the alloying elements in the steel. For example, calcium silicate blocks with higher silicon content can be used to increase the silicon content and increase the content of the alloying element silicon, thereby improving the properties of steel and adapting to different application requirements. Calcium silicon electric furnace production process: The production of calcium silicon alloy is relatively complex. The main raw materials in the production process are quartz (Si02,), limestone (CaCO3,) and reducing agent mixture (mainly coke and bituminous coal).  Calcium silicon alloy is produced by reducing silicon dioxide and calcium oxide using a carbonaceous reducing agent in a reduction electric furnace. The conventional production methods of calcium silicon alloy can be divided into three types, namely: mixed feeding method, layered feeding method and two-step method. Mixed feeding method, also known as one-step method. Use a carbonaceous reducing agent to simultaneously reduce silica and calcium oxide, that is, mix all the raw materials evenly and add them into the furnace in small batches. The mixing and feeding method is simple to operate and easy to control.

 

Vloga blokov kalcijevega silikata pri taljenju jekla se odraža predvsem v naslednjih vidikih:

 

1. Razžveplanje: silicij in kalcij v bloku kalcijevega silikata imata močne redukcijske lastnosti in lahko reagirata z oksidi v staljenem jeklu, da ustvarita hlapni plin vodikov sulfid (H2S), s čimer zmanjšata in izhlapita žveplo v staljenem jeklu. Pojdite ven, da dosežete namen razžveplanja in izboljšate kakovost jekla.

 

2. Dezoksidacija: Kalcij v bloku kalcijevega silikata reagira z oksidi v staljenem jeklu, da tvori kalcijev oksid, in sodeluje pri tvorbi oksidne ovojnice jekla, s čimer se zmanjša vsebnost kisika v staljenem jeklu, s čimer se izboljša čistost in čistost jekla. moč.

 

3. Učinek prilagajanja zlitine: Silicij in kalcij v blokih kalcijevega silikata sta reducenta in elementa zlitine. Dodajanje blokov kalcijevega silikata staljenemu jeklu lahko prilagodi vsebnost nekovin v staljenem jeklu in povzroči spremembe v legirnih elementih v jeklu. Na primer, bloke kalcijevega silikata z višjo vsebnostjo silicija je mogoče uporabiti za povečanje vsebnosti silicija in povečanje vsebnosti legirnega elementa silicija, s čimer se izboljšajo lastnosti jekla in prilagodijo različnim zahtevam uporabe. Postopek proizvodnje električne peči s kalcijevim silicijem: Proizvodnja zlitine kalcijevega silicija je razmeroma zapletena. Glavne surovine v proizvodnem procesu so kremen (Si02,), apnenec (CaCO3,) in mešanica reducentov (predvsem koks in bituminozni premog).

 

Calcium silicon alloy is an ideal deoxidizer and desulfurizer currently used in the production process of high-quality steel, special steel and special alloys. It is also used as an inoculant for cast iron and an additive in the production of ductile iron. Both calcium and silicon have strong affinity with oxygen. Calcium, in particular, has a strong affinity not only with oxygen, but also with sulfur and nitrogen. Calcium silicon alloy not only has strong deoxidizing ability, and the deoxidation products are easy to float and be discharged, but also can improve the properties of steel and improve the toughness, impact toughness and fluidity of steel.   The role of calcium silicate blocks in steel smelting is mainly reflected in the following aspects:  1.Desulfurization: The silicon and calcium in the calcium silicate block have strong reducing properties and can react with the oxides in the molten steel to generate volatile gas hydrogen sulfide (H2S), thereby reducing and volatilizing the sulfur in the molten steel. Go out to achieve the purpose of desulfurization and improve the quality of steel.  2.Deoxidation: The calcium in the calcium silicate block reacts with the oxides in the molten steel to form calcium oxide, and participates in the formation of the oxide envelope of the steel, thereby reducing the oxygen content in the molten steel, thereby improving the purity and purity of the steel. strength.  3. Alloy adjustment effect: Silicon and calcium in calcium silicate blocks are both reducing agents and alloy elements. Adding calcium silicate blocks to molten steel can adjust the non-metal content in the molten steel and cause changes in the alloying elements in the steel. For example, calcium silicate blocks with higher silicon content can be used to increase the silicon content and increase the content of the alloying element silicon, thereby improving the properties of steel and adapting to different application requirements. Calcium silicon electric furnace production process: The production of calcium silicon alloy is relatively complex. The main raw materials in the production process are quartz (Si02,), limestone (CaCO3,) and reducing agent mixture (mainly coke and bituminous coal).  Calcium silicon alloy is produced by reducing silicon dioxide and calcium oxide using a carbonaceous reducing agent in a reduction electric furnace. The conventional production methods of calcium silicon alloy can be divided into three types, namely: mixed feeding method, layered feeding method and two-step method. Mixed feeding method, also known as one-step method. Use a carbonaceous reducing agent to simultaneously reduce silica and calcium oxide, that is, mix all the raw materials evenly and add them into the furnace in small batches. The mixing and feeding method is simple to operate and easy to control.

 

Kalcijevo silicijeva zlitina se proizvaja z redukcijo silicijevega dioksida in kalcijevega oksida z redukcijskim sredstvom, ki vsebuje ogljik, v redukcijski električni peči. Običajne proizvodne metode kalcijeve silicijeve zlitine lahko razdelimo na tri vrste, in sicer: metodo mešanega hranjenja, metodo plastnega hranjenja in dvostopenjsko metodo. Metoda mešanega hranjenja, znana tudi kot metoda v enem koraku. Uporabite ogljikovo redukcijsko sredstvo za istočasno redukcijo silicijevega dioksida in kalcijevega oksida, kar pomeni, da vse surovine enakomerno premešate in jih v majhnih serijah dodate v peč. Metoda mešanja in hranjenja je enostavna za upravljanje in enostavno upravljanje.

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