Introduktion til smelteproces i elektriske ovne af calciumsiliciumlegering

May 17, 2024Læg en besked

Calcium silicium legering er en ideel deoxidator og desulfurizer, der i øjeblikket anvendes i produktionsprocessen af ​​højkvalitets stål, specialstål og speciallegeringer. Det bruges også som et podemiddel til støbejern og et tilsætningsstof i fremstillingen af ​​duktilt jern. Både calcium og silicium har stærk affinitet med ilt. Calcium har især en stærk affinitet ikke kun med oxygen, men også med svovl og nitrogen. Calcium-siliciumlegering har ikke kun en stærk deoxiderende evne, og deoxidationsprodukterne er nemme at flyde og udledes, men kan også forbedre stålets egenskaber og forbedre stålets sejhed, slagfasthed og flydendehed.

 

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.

 

Rollen af ​​calciumsilikatblokke i stålsmeltning afspejles hovedsageligt i følgende aspekter:

 

1. Afsvovling: Silicium og calcium i calciumsilikatblokken har stærke reducerende egenskaber og kan reagere med oxiderne i det smeltede stål for at generere flygtig gas hydrogensulfid (H2S), hvorved svovlen i det smeltede stål reduceres og fordampes. Gå ud for at opnå formålet med afsvovling og forbedre kvaliteten af ​​stål.

 

2. Deoxidation: Calciumet i calciumsilikatblokken reagerer med oxiderne i det smeltede stål til dannelse af calciumoxid, og deltager i dannelsen af ​​stålets oxidkappe, hvorved iltindholdet i det smeltede stål reduceres, og derved forbedres stålets renhed og renhed. styrke.

 

3. Legeringsjusteringseffekt: Silicium og calcium i calciumsilikatblokke er både reduktionsmidler og legeringselementer. Tilsætning af calciumsilikatblokke til smeltet stål kan justere ikke-metalindholdet i det smeltede stål og forårsage ændringer i legeringselementerne i stålet. For eksempel kan calciumsilikatblokke med højere siliciumindhold bruges til at øge siliciumindholdet og øge indholdet af legeringselementet silicium, hvorved stålets egenskaber forbedres og tilpasses forskellige anvendelseskrav. Kalcium silicium elektrisk ovn produktionsproces: Produktionen af ​​calcium silicium legering er relativt kompleks. De vigtigste råvarer i produktionsprocessen er kvarts (Si02,), kalksten (CaCO3,) og reduktionsmiddelblanding (hovedsageligt koks og bituminøst kul).

 

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.

 

Calciumsiliciumlegering fremstilles ved at reducere siliciumdioxid og calciumoxid ved hjælp af et kulholdigt reduktionsmiddel i en elektrisk reduktionsovn. De konventionelle produktionsmetoder for calciumsiliciumlegering kan opdeles i tre typer, nemlig: blandet fodringsmetode, lagdelt fodringsmetode og to-trins metode. Blandet fodringsmetode, også kendt som et-trins metode. Brug et kulholdigt reduktionsmiddel til samtidig at reducere silica og calciumoxid, det vil sige, bland alle råmaterialerne jævnt og tilsæt dem i ovnen i små portioner. Blandings- og fodringsmetoden er enkel at betjene og nem at kontrollere.

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