LF精煉無氟渣系生產(chǎn)Q345qE生產(chǎn)實踐

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摘 要：根據(jù)不同精煉渣系的特點，唐山中厚板公司選擇無氟的CaO-Al2O3-SiO2渣系，同時優(yōu)化轉(zhuǎn)爐脫氧工藝，采用循環(huán)渣利用技術(shù)，實現(xiàn)了精煉工序取消螢石。生產(chǎn)實踐表明，該渣滿足了唐山中厚板材有限公司BOF-LF-CC工藝生產(chǎn)Q345qE的要求，為高效生產(chǎn)和清潔生產(chǎn)奠定了基礎。

關鍵詞：LF；無氟精煉渣；脫氧；脫硫

PROCESS STUDY ON CANCELLING FLUORITE OF STEEL-REFINING BY LF

Luan Wenlin Liu Zhiyuan Wang Chongjun Yao Jingwen

（Tangshan Heavy Plate Co.， Ltd.， Hebei iron and Steel Group Tangshan 063000，China）

Abstract：Based on the characteristics of different refining slag systems， Tangshan Heavy Plate Co Ltd has chosen the fluorine-free CaO-Al2O3-SiO2 slag system， optimized the converter deoxygenation process， and adopted cyclic slag utilization technology to achieve the elimination of fluorite in the refining process. The industrial practice showed that the slag was suitable for producing Q345qE in Tangshan Heavy Plate Co Ltd， and also establishing the foundation of high efficiency production and cleaner production.

Key words： LF; refining slag without CaF2; desulphurization; deoxidatio

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LF精煉爐使用精煉渣主要有鈣鋁渣系和鈣氟渣系兩種[1]，其中CaO-CaF2渣系使用較為普遍，該渣系的特點是脫硫、脫氧能力較為突出，渣中CaF2可以顯著的降低脫硫渣的熔點，改善爐渣的流動性。（剩余3115字）