Reduction of Iron Ore Pellets, Sinter, and Lump …
It is found that lump ore has lowest reduction rate in all test conditions, and at lower temperatures iron ore pellets reduce faster than sinter, and this is reversed at higher temperatures. Furthermore, the reduction rate of sinter and iron ore pellets begins to resemble each other at higher temperatures.
Study on reducibility and porosity of metallurgical …
Sintered iron ores are consumed by most of the modern blast furnaces as the iron feed to the blast furnace feedstock . The formation of the sinter structure is highly complex process accompanied by a large number of factors related to the process technology as well as stone and physical phenomena during the sintering process. For optimal processing of sinter in blast furnaces, the knowledge on sinter structure and sinter reducibility is essential…
(PDF) Improving reducibility of iron ore pellets by ...
The reducibility of iron ore pellets of a specific chemistry can be improved by the optimization of physical parameters such as induration temperature, improving size distribution of fines,...
reducibility-ore-sinter-pellets-testing …
The RF-33/TV/RDI has been designed primarily to test the properties of the iron ore charge – lump ores, pellets, and sinter. However, in case of adding the coke making software modules and CSR testing equipment, it is also possible to test coke properties alike with the RF-33, RF-33/KK or RF-33/TV Systems. The RF-33/TV/ RDI System therefore can be, generally said, widely usable for studying ...
The Reducibility Studies On Itakpe And Agbaja Resultant ...
Fe content was 6.4wt% while the for Agbaja pellets had the reducibility in these order at 800oC for 120 minutes the Fe content was 40.7wt%, at 920oC for 120minutes Fe content was 60.2wt% and at 1000oC for 120 minutes. Keywords: Reducibility, Study, Resultant, Pellets, Itakpe, Agbaja Iron Ore
IS 11292 (1985): Determination of relative reducibility of ...
reducibility of iron oxides; lump ores, sinters and pellets. The test is to be conducted under specific conditions, for example, isothermal reduction, reduction in a fixed bed, reduction by means of carbon monoxide and nitrogen mixture, and a sample having a specified size range…
iron ore sinter pellets reducibility - …
Factors Affecting the Reducibility of Sintered Chromite Pellets and Chromite Lumpy Ore 79 of a larger metal lump and some metal droplets in the slag. RDI Test System - Iron Ore Testing Equipment - …
Effect of Pre-reduction Degree on Softening Behavior of ...
sinter iron ore was prepared as single tablet sample. The samples were made from mixture of reagent oxides and they were pre-reduced to control their reduction degree to several reduction levels. The tablet sample was rapidly heated up to 900°C, and then gradually heated up with 10°C/min under inert gas atmosphere and 0.1 MPa load. Shrinkage degree of the sample was measured during the ...
Pellets for Direct Reduction
The stone deals with properties and quality demands of iron ore pellets for such processes. Matters such as the effect of the residual magnetite in the fired pellets on the degree of metallization, the amount and composition of the slag phase in the pellets, the mechanism of the disintegration during reduction, the state of swelling of the pellets during the conditions prevailing in these processes…
(PDF) Ore blending ratio optimisation for …
The iron ore blend for sintering depends to a great extent on ore properties. It is hard to determine the final sinter reducibility from the reducibility and ratio of single iron ores in a mixture ...
Theory and Practice of Sintering of Iron ore – …
Coke is the best fuel for iron ore sintering. Size classification is a crucial factor. The best economy and efficiency is achieved with a coke particle size of less than 3 mm. Some studies have shown that the best coke size for sinter productivity and reducibility is between 0.25 mm and 3 mm.
Iron Ore Sinter – IspatGuru
Chemistry – The best stone criterion for sinter is a maximum iron content and minimum gangue content with suitable basicity, consistent with acceptable strength, reducibility, and blast furnace performance. The iron content is dependent almost entirely upon the iron ores fines which are available for the sinter making. Silica alumina ratio in the sinter is to be less than 0.5. The lower it is better. The …
Characterisation of the Physical and Metallurgical ...
The limit values of the Tumble Index (TI) and Abrasion Index (AI) for the iron ore pellets used in furnace reduction process are >70 wt% for the TI value and <5 wt% for the AI value . It follows from Table 1 that the TI values of Muko ores are between 88 wt% and 93 wt%, which is significantly higher than the stipulated 70 wt%. Therefore, the ores from all Muko deposits can be handled, loaded, and …
iron ore sinter pellets reducibility - patricmani.ch
iron ore sinter pellets reducibility - kupidowoonwinkel. Sintering of the Briquette Egyptian Iron Ore with , Know More. lowering the reducibility of sintered hematite and magnetite ore pellets [3] Wynnyckyj and Fahidy [1974] found that the strength index of iron oxide pellet s is directly proportion with the shrinkage that takes place during burning of these pellets andthe addition of lime ...
Iron Ore Crusher Sinter Pellets Reducibility
Improving reducibility of iron ore pellets by opt. Reducibility of iron bearing material is an important property which represents its suitability of reduction in iron making furnaces It has direct influence on improving productivity and lowering energy consumption in iron making process The.
(PDF) Influence of Mineralogy and Pore Structure …
04.06.2020 · Analogue iron ore sinter mixes were sintered in an Infrared furnace and the micro-structure was studied by measuring porosity, pore size and …
The Quantitative Dependence of Reducibility on ...
Composition in Iron Ore Sinters (Blast Furnace Sinters) H ... Sinter Reducibility [%/min] Fe total [wt%] FeO [wt%] Processdescription 1 0.63 57.15 16.95 comparative sinter with ahighcontentofFeO 2 0.64 57.01 15.86 sinter with an addition of5wt%ofburntlime 3 0.65 56.87 15.50 sinterwithlimestone 4 1.09 56.88 9.24 sinter with the upper layer of thickness of 30 mm, containing oily scales ...
Using a Mathematical Model of Counter-Current Flow in a ...
Measurements of the main physicochemical characteristics of iron ores, sinter, and pellets have been taken, and equipment has been developed to evaluate reducibility and thermoplastic properties of these materials. Despite the fact that the directly measured parameters of the burden cannot be used for comparing the behavior of different ore charges, attempts have been made for a complex ...
Review Effects of Alumina on Sintering Performance of ...
Iron ore sinter constitutes a major proportion of blast fur-nace burden in most countries in the Asia-Pacific region. Hence, its quality and consistency are expected to have a significant impact on blast furnace performance. It is gener-ally appreciated that the quality of iron ore sinter is dictated by the sinter structure formed during the sintering process, as well as the nature ...