Improved slag properties through innovative lime utilization, slag control

Reference number 2018-03913
Coordinator Luleå tekniska universitet - Avdelningen för Mineral och metallurgi
Funding from Vinnova SEK 2 025 622
Project duration December 2018 - June 2020
Status Ongoing
Venture The strategic innovation programme for Metallic material
Call 2018-02825-en

Purpose and goal

The goal for this project is to verify the theoretical considerations and to develop a lime containing booster briquette. The following goals are for the project specific; To develop the fundamental knowledge that makes it possible to optimize the LD; To develop and manufacture a slag sampling equipment that can take slag samples during the blow; To develop and produce a lime containing booster briquette; that enables the dephosphorization to start earlier; To optimize the slag formation, using the necessary amounts of lime needed.

Expected results and effects

The present project will result in a new slag sampling device, a new recipe for a slag formation booster briquette, and verification of slag formation theories based on full scale trials. This will form the base for future optimization of the slag formation in the BOF, either by the industry partners or in a future research program with focus on the slag formation in an operating BOF.

Planned approach and implementation

The project Slaggkontroll I is divided into five different work packages. WP 1 is focusing on slag formation and the reactions taking part in the process. In WP 2 necessary equipment for slag sampling including temperature measurement for the LD-process will be developed. In WP 3, a recipe for a lime containing “booster” briquette will be developed enabling rapid lime dissolution. In WP 4, the slag sampler and theoretical considerations will be tested in full scale trials. WP 5 will focus on project management and reporting.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.