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: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638231
• 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.

钢中形成的微粒的性质和数量在炼钢过程中至关重要，它会影响因堵塞而导致的生产率和所产钢的质量。了解和控制如何有效去除微粒（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。对于夹杂物去除速度以及控制夹杂物从钢水中去除的参数的了解有限。该研究计划的主要目的是利用高温共焦激光扫描显微镜测定的夹杂物溶解速率，定量描述钢水中夹杂物的去除。该计划特别关注目前尚未研究的一系列成分的含钛夹杂物，但这些夹杂物对钢铁行业至关重要，特别是美国钢铁加拿大公司和安赛乐米塔尔多法斯科公司。从长远来看，这项工作中建立的实验和建模技术将用于了解钢精炼过程中更广泛的夹杂物去除。拟议的研究计划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对含钛夹杂物的去除。这项工作对于开发基于工艺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。对本研究中开发的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，以便在钢铁市场的高价值端保持竞争力。拟议的研究提供了卓越水平的基础研究培训，其中包括为研究生提供最先进的共焦激光扫描显微镜。通过该项目接受培训的学生（最初为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众多钢铁公司进行互动，并在学习结束后将获得极好的就业机会。该项目将扩展了麦克马斯特大学的研究能力，并为加拿大钢铁行业的经济和环境绩效的改善做出了贡献。该项目的成果将提高炼钢过程的生产率并降低能源消耗。此外，它将补充和提高麦克马斯特熔体加工实验室内设备的功能。高附加值的优质钢材是大多数加拿大钢铁公司保持全球竞争力和保持市场份额的目标。这是维持加拿大钢铁行业盈利能力的重要先决条件，该行业对加拿大经济的价值达 140 亿加元，直接为加拿大创造了 25,000 个就业岗位，并间接支持了超过 100,000 个就业岗位。