Studies on Briquetting of Fines and Wastes of Iron and Steel Plants

DOI : http://dx.doi.org/10.13005/msri/050236

Download this article as: 

Huge quantities of iron oxide and coke fines are generated during handling and processing of raw materials in Iron & Steel plants. This is generated to the extent of 5% of plant feed materials besides mill scale ,flue dust ,granulated slag etc. This waste material is disposed off by stock piling, land filling and partial recycling to main processing unit through sintering, a high temperature agglomeration technique to recover the iron oxide. But with the recent enforcement of stringent environmental regulations , landfill costs are increasing and operation of sintering plants is becoming more difficult , as they necessitate the adoption of zero waste based concept in industrial production units. The briquette blend consists of flue dust ,filter cake ,coke breeze , desulphurised fines and steel fines. These blends vary in their iron and carbon contents. The waste materials are very fine in nature and the briquettes are made using a suitable binder. In the present investigation, studies on fine iron filling waste using binders is carried out. As the use of chemical grade binders resulted in high cost for briquette making, studies were made using commercial grade binders. The process is simple, innovative, efficient and cost effective. It utilizes the wastes and in the process helps and protects the environment.

Iron ore powder; fly ash; bentonite; pelletizing; briquettes; thermal analysis