Low Alumina Iron Ore Sinter Properties

Iron ore sinter, constituting a major proportion of blast furnace burden in most countries, Effect of Alumina on Sinter Mineralogy Low temperature fluxed sinter mainly contains un-re-acted hematite nuclei (around 30vol%) in a matrix (about while significant impacts of alumina on the properties of oxide melts have been reported,3,8,24

In the present work laboratory sintering experiments have been carried out with iron ore fines of different alumina level (2.00 to 5.46 mass‐%) to know the influence of alumina on mineralogy, productivity, physical and metallurgical properties of sinter prepared by the conventional and the selective granulation process.

iron ore concentrate contains a lower alumina. Recently it is more popular to be applied in commercial sinter plants to decrease the alumina content in sinter or combined with a high alumina low grade ore to reduce the production cost of sintering. However the productivity of sinter decreased with a decrease in the size of iron ore.

Studies were carried out on low and high alumina iron ore fines to know the influence of sinter basicity. They found that sinter productivity and RDI decreased and TI increased when sinter ...

Iron ore sinter constitutes a major proportion of blast fur- ... Effect of Alumina on Sinter Mineralogy Low temperature fluxed sinter mainly contains un-re-acted hematite nuclei ... while significant impacts of alumina on the properties of oxide melts have been reported,3,8,24–27) ...

The quality of iron ore presently being used calls for extensive investigations to produce low basicity sinter with high alumina iron ore. Studies have been carried out on low and high alumina iron ore fines to know the influence of sinter basicity and fuel (coke breeze) addition on sinter mineralogy, properties …

The size of iron ore affects the sintering properties. An increase in the size of iron ore promotes the productivity of sinter, but can reduce the tumbler strength slightly and save a little coke. The mineralogy of sinter can more easily be predicted from its chemical composition than its physical and chemical properties.

01-01-2015· Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm particle size, which possess the physical and metallurgical characteristics and gas permeability …

Iron ore sinter, constituting a major proportion of blast furnace burden in most countries, Effect of Alumina on Sinter Mineralogy Low temperature fluxed sinter mainly contains un-re-acted hematite nuclei (around 30vol%) in a matrix (about while significant impacts of alumina on the properties of oxide melts have been reported,3,8,24

iron ore concentrate contains a lower alumina. Recently it is more popular to be applied in commercial sinter plants to decrease the alumina content in sinter or combined with a high alumina low grade ore to reduce the production cost of sintering. However the productivity of sinter decreased with a decrease in the size of iron ore.

Iron ore sinter constitutes a major proportion of blast fur- ... Effect of Alumina on Sinter Mineralogy Low temperature fluxed sinter mainly contains un-re-acted hematite nuclei ... while significant impacts of alumina on the properties of oxide melts have been reported,3,8,24–27) ...

(2014). Influence of sinter basicity (CaO/SiO2) on low and high alumina iron ore sinter quality. Mineral Processing and Extractive Metallurgy: Vol. 123, No. 2, pp. 75-85.

Influence of Iron Ore Mineralogy on Sinter Strength ... mineral and significantly low alumina bearing mineral. Some ore bodies, on the other hand, ... are beneficial to sinter physical and mechanical properties. As the ore contains less alumina less of it will go to sinter’s molten part to form multi-component hematite or

The quality of iron ore presently being used calls for extensive investigations to produce low basicity sinter with high alumina iron ore. Studies have been carried out on low and high alumina iron ore fines to know the influence of sinter basicity and fuel (coke breeze) addition on sinter mineralogy, properties …

The size of iron ore affects the sintering properties. An increase in the size of iron ore promotes the productivity of sinter, but can reduce the tumbler strength slightly and save a little coke. The mineralogy of sinter can more easily be predicted from its chemical composition than its physical and chemical properties.

01-01-2015· Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm particle size, which possess the physical and metallurgical characteristics and gas permeability …

Alumina during ironmaking enters the process through impurities in the input materials mainly iron ore. Alumina affects the sintering of iron ore. The most harmful effect of alumina is to worsen the RDI (reduction degradation index) value of sinter. RDI value increases as the alumina content rises.

Work towards ideal sinter performance, even with a low grade ore If you understand the properties of your ore, and what you can and can’t do with it, then you can optimise performance. Key to this is to avoid making an immediate value judgement — on the basis of chemistry — that the presence of certain impurities will have a negative impact on your ore.

Iron ore sinter, constituting a major proportion of blast furnace burden in most countries, Effect of Alumina on Sinter Mineralogy Low temperature fluxed sinter mainly contains un-re-acted hematite nuclei (around 30vol%) in a matrix (about while significant impacts of alumina on the properties of oxide melts have been reported,3,8,24

The size of iron ore affects the sintering properties. An increase in the size of iron ore promotes the productivity of sinter, but can reduce the tumbler strength slightly and save a little coke. The mineralogy of sinter can more easily be predicted from its chemical composition than its physical and chemical properties.

Work towards ideal sinter performance, even with a low grade ore If you understand the properties of your ore, and what you can and can’t do with it, then you can optimise performance. Key to this is to avoid making an immediate value judgement — on the basis of chemistry — that the presence of certain impurities will have a negative impact on your ore.

Influence of Alumina on Iron Ore Sinter Properties and ... 2010-04-23· The selective granulation process is a new sintering process for high alumina iron ore fines, and can eliminate the adverse effects of 'hard to sinter' or 'unsuitable – for ironmaking' ores.

The product 'sinter' consists of a cellular mass of ore bonded in a slag matrix. The sinter mix, besides the ore fines, usually contains other materials like flue dust, return fines, limestone and/or dolomite etc., in order to control the properties of the product as well as to utilize industrial waste.

Ore with higher alumina content is usually expected to be detrimental in forming the sinter matrix, if sintered alone, due to the low reactivity of alumina bearing minerals and the high viscosity of primary melts. The selective granulation process is a new sintering process for high alumina iron ore fines, and can eliminate the adverse effects ...

Previous work has demonstrated that the SFCA-I phase is the most desirable bonding phase in iron ore sinter, since it results in higher sinter strength and better reducibility.2,3,18,19) The effect of alumina on SFCA morphology is summarized in Fig. 1,3) showing that SFCA-I is favoured when the total alumina and silicate content in the bonding phase is low and the hematite content is high.

The Sintering Process of Iron Ore Fines – IspatGuru. Mar 09, 2013· Sintering is a thermal process (carried out at 1300 deg C to 1400 deg C) by which a mixture of iron ore, return fines, recycled products of the steel plant industry (such as mill scale, blast furnace dusts, etc.), slag forming elements, fluxes and coke fines are agglomerated in a sinter plant with the purpose of ...

Usually limonitic and goethite ore are associated with higher alumina and LOI. The conventional sintering process is one of the well established processes for high quality hematite ore. It does not fully respond to the low grade iron ore associated with goethite and limonite. This has led to deterioration in sinter properties and productivity.

on physical and metallurgical properties of sinters. The ... III.2 Characterization of iron ore sinters ... which has a low reducibility, whereas a very low concentration of melting will cause insufficient sinter strength, resulting in a high amount of return fines [5,6].