Original purpose of the iron-ore sintering process is to agglomerate fine ores into lump burdens for blast furnace BF . Since sintering conditions e.g. kinds of ores and used fluxing materials and pregranulation processes strongly affect the metallurgical properties of the produced sinter many researches and developments on the sintering
Iron ore sintering is a type of powder metallurgy used to pre-treat iron before using it in manufacturing appli ions. Sintering involves heating iron powder to partially but not completely melt the iron particles. The exact process used and additional elements involved vary with some methods using gas or electricity in addition to heat.
Iron ore lump is premium product over fines as it could be charged directly into blast furnaces saving sintering costs and reducing pollution. However market sources observed lower valuations for lump ores compared to medium grade fines at Chinese ports.
“Steel mills in North and East China have been procuring iron ore lumps steadily recently as their sintering operations may be limited now and then in winter whenever the local air quality is poor so it is rather necessary for them to maintain some lumps stocks to standby” a Rizhao-based iron ore trader in East China’s Shandong remarked disclosing that he is holding onto some lower
The iron-bearing materials consist of iron ore pellets lump ore and sinter. When the charge material descends it is reduced by CO and H 2 . In the ideal situation iron-bearing materials reduce fast and remain in the solid form in as high temperatures as possible.
The Platts lump premium assessments reflect the tradable price of iron ore lump brands that are most widely traded in the market. Most commonly Platts observes spot lump transactions being concluded as a floating price premium over the monthly average of IODEX assessments which is how the assessment is directly presented on a US dollar per dry metric ton unit CFR Qingdao basis.
The iron ore samples are typical sinter pellet and lump ore and their chemical compositions are listed in Table 1. The iron ore samples were put into the re- duction tube. The samples were mixed of 50% one with size distribution of 10-12. 5 mm and 50% of 12. 5- 16 mm and the total mass of samples was 2 kg.
Sintering takes the iron ore fines and agglomerates them into strong lumps capable of being used in the furnace. It also concentrates the iron percentage being supplied to the furnace. Aberpergwm products for metal processing: Beans size 1 and size 2 are used as charge carbon in steel or other metal smelters such as precious metals.