The Fundamentals of Micro-Particle Removal by Liquid Oxides

液态氧化物去除微粒的基本原理

• 批准号: RGPIN-2014-04187
• 负责人: Dogan, Neslihan
• 金额: $ 1.68万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=649407
• 关键词: Fundamentals; Micro; Particle; Removal; Liquid

The nature and quantity of the micro-particles formed in steel is critical in steelmaking, affecting both productivity due to clogging, and quality of the steel produced. Understanding and controlling how the micro-particles (inclusions) can be removed efficiently is crucial to optimizing the operating conditions of steel refining units and improving end product quality. There is a limited knowledge how fast the inclusions can be removed and what parameters are controlling the removability of inclusions from liquid steel.**The primary aim of this research program is to use the dissolution rates of inclusions, as determined by high temperature confocal laser scanning microscopy, to quantitatively describe inclusion removal from liquid steel. This program particularly focuses on Ti containing inclusions of a range of compositions that are not currently being investigated, but which are of vital importance to the steel industry, particularly U.S. Steel Canada and ArcelorMittal Dofasco. In the longer term the experimental and modelling techniques established in this work will be employed to understand a broader range of inclusions-removal in the refining of steel. **The proposed research program will establish a production technique for synthetic Ti-containing inclusions, which can be used in experiments to better understand and control the removal of Ti-containing inclusions by a protective slag. This work is essential in developing a modeling tool, based on process chemistry that will enable reliable prediction of dissolution rate of inclusions during steel refining. Understanding of inclusion removal developed in this research will assist steelmakers in optimizing their process parameters for inclusion control in ladle steelmaking processes in order to remain competitive in the high value end of the steel market.**The proposed research provides excellent level of fundamental research training incorporating a state of the art confocal laser scanning microscope for graduate students. The students to be trained through this project (initially 2PhD and 2Masters) will have the opportunity, through the McMaster Steel Research Centre, to interact with a wide range of steel companies and will have excellent employment opportunities when their studies are finished.**This project will extend of the research capabilities at McMaster University and contribute to a consequent improvement in the economic and environmental performance of the Canadian steel industry. The outcomes of this project will lead to improvements in productivity in the steel refining process and decreased energy consumption. Furthermore, it will complement and advance the capabilities of equipment within the McMaster Melt Processing Laboratory. High quality steel in higher added value is the target of most Canadian steel companies to be globally competitive and maintain market share. This is an essential pre-requisite for maintaining the profitability of the Canadian Steel Industry, which is worth $14 billion to the Canadian economy, generates 25,000 jobs in Canada directly and supports over 100,000 jobs indirectly.

钢中形成的微颗粒的性质和数量在炼钢过程中至关重要，既影响因堵塞而产生的生产率，也影响所生产的钢的质量。了解和控制如何有效地去除微颗粒（夹杂物）对于优化炼钢装置的操作条件和提高最终产品质量至关重要。对于夹杂物的去除速度以及控制夹杂物从钢液中去除的参数所知有限。**本研究项目的主要目的是利用高温共聚焦激光扫描显微镜测定的夹杂物溶解速率，定量描述钢液中夹杂物的去除。该计划特别侧重于含钛的一系列成分的内含物，这些成分目前尚未进行调查，但对钢铁工业至关重要，特别是美国钢铁加拿大公司和安赛乐米塔尔Dofasco公司。从长远来看，在这项工作中建立的实验和建模技术将被用于理解钢精炼中更广泛的夹杂物去除。**本研究项目将建立一种合成含钛夹杂物的生产技术，可用于实验，以更好地了解和控制保护渣去除含钛夹杂物的过程。这项工作对于开发一种基于过程化学的建模工具至关重要，该工具将能够可靠地预测钢精炼过程中夹杂物的溶解速率。本研究中发展的对夹杂物去除的理解将有助于钢铁制造商优化钢包炼钢过程中夹杂物控制的工艺参数，以保持在高价值钢铁市场的竞争力。**建议的研究为研究生提供高水平的基础研究训练，其中包括最先进的共聚焦激光扫描显微镜。通过该项目培训的学生（最初是2个博士和2个硕士）将有机会通过麦克马斯特钢铁研究中心与广泛的钢铁公司互动，并在完成学业后拥有良好的就业机会。**该项目将扩展麦克马斯特大学的研究能力，并为加拿大钢铁工业的经济和环境绩效的改善做出贡献。该项目的成果将导致提高炼钢过程的生产率和降低能耗。此外，它将补充和推进麦克马斯特熔体加工实验室设备的能力。高附加值的高质量钢材是大多数加拿大钢铁公司在全球竞争和保持市场份额的目标。这是维持加拿大钢铁工业盈利能力的必要先决条件。加拿大钢铁工业对加拿大经济的价值为140亿美元，在加拿大直接创造2.5万个就业机会，间接支持超过10万个就业机会。