高磷轉爐渣中磷的富集行為研究

王達志; 包燕平; 王敏

doi:10.13374/j.issn2095-9389.2018.s1.010

高磷轉爐渣中磷的富集行為研究

doi: 10.13374/j.issn2095-9389.2018.s1.010

北京科技大學鋼鐵冶金新技術國家重點實驗室

基金項目:

國家自然科學基金資助項目 (51574019)

詳細信息

通訊作者:
包燕平, E-mail:baoyp@ustb.edu.cn

中圖分類號: X757
計量
- 文章訪問數: 15
- HTML全文瀏覽量: 6
- PDF下載量: 0
- 被引次數: 0
出版歷程
- 收稿日期: 2017-10-15
- 網絡出版日期: 2023-07-18

Study on the enrichment behavior of phosphorus in high phosphorus converter slag

State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing

摘要

摘要: 為了實現高磷轉爐渣中磷的有效富集, 以P₂O₅質量分數為10%的Ca O-Si O₂-Fe₂O₃-P₂O₅-MgO-MnO爐渣為研究對象, 通過實驗室熱態實驗研究了高磷轉爐渣中磷的賦存形式, 探討了爐渣堿度和Fe₂O₃含量對高磷轉爐渣中磷的富集行為的影響.結果表明:在高磷轉爐渣中磷元素主要以n2CaO·Si O₂-3CaO·P₂O₅ (n C₂S-C₃P) 固溶體的形式存在, 爐渣堿度和Fe₂O₃含量變化對其賦存形式沒有影響.爐渣堿度變化會影響2CaO·Si O₂的生成量, 堿度太高或太低, 均不利于渣中磷向富磷相富集, 控制爐渣堿度在1.5¹.8之間有利于渣中磷元素的充分富集.增加渣中Fe₂O₃含量, 可以減少2CaO·Si O₂的析出量, 提高富磷相中P₂O₅的含量, 有利于渣中磷元素的富集.
- 轉爐渣 /
- 堿度 /
- 氧化鐵 /
- 磷 /
- 富集
Abstract: In order to realize the effective enrichment of phosphorus in high phosphorus converter slag, using the Ca O-Si O₂-Fe₂O₃-P₂O₅-MgO-MnO slag with a P₂O₅content of 10% (mass fraction) as the research object, the form of phosphorus in the high phosphorous slag was studied by the laboratory hot state experiment.The effects of basicity and Fe₂O₃content on the enrichment of phosphorus in high phosphorus converter slag were investigated.The results show that the phosphorus element in the high phosphorus converter slag mainly exists in the form of n2CaO·Si O₂-3CaO·P₂O₅ (n C₂S-C₃P) solid solution and the changes of slag basicity and Fe₂O₃content have no effect on the phosphorus occurrence form.The change of basicity has an effect on the production of 2CaO·Si O₂.Too high or too low basicity is not conducive to the enrichment of phosphorus from slag to phosphorus-rich phase.Controlling the slag basicity in the range of 1.5-1.8 is conducive to the full enrichment of phosphorus in slag.Increasing the Fe₂O₃content in the slag can reduce the precipitation of 2CaO·Si O₂and increase the content of P₂O₅in the phosphorus-rich phase, which is favorable for the enrichment of phosphorus in the slag.
- converter slag /
- basicity /
- iron oxide /
- phosphorus /
- enrichment

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