آخرین محصولات
Recycling of LD converter sludge and iron-bearing fines …
Iron ore microfines and concentrate have very limited uses in sintering processes. They are used in pelletization; however, this process is cost intensive. Furthermore, the microfines of non-coking … Expand
Development of fluxed micropellets for sintering utilising iron …
Ultrafine iron oxide wastes such as slime, blue dust and Linz–Donawitz (LD) converter sludge have very limited use in sintering of iron ore due to their excessive fineness (−50 μm). Pelletisation of these ultrafine materials for use in blast furnace involves high temperature curing, which is a highly energy intensive process. Briquetting of LD …
Development of carbon composite iron ore micropellets by …
Iron ore microfines and concentrate have very limited uses in sintering processes. They are used in pelletization; however, this process is cost intensive. Furthermore, the microfines of non-coking coal and other carbon-bearing materials, e.g., blast-furnace flue dust(BFD) and coke fines, are not used extensively in the metallurgical industry because …
Development of carbon composite iron ore micropellets …
Abstract: Iron ore microfines and concentrate have very limited uses in sintering processes. They are used in pelletization; however, this ... The developed micropellets have strong potential as a heat source in smelting reduction in iron making and sintering to reduce coke breeze. The micropellets produced with BFD and coke fines (8wt%–12wt ...
Utilization of micro fines in iron and steel making process
A huge quantity of iron oxides fines (60 % of ore) are generated in mines area and in different units of steel plants. Coarser sizes of these are used in sinter plant. However in sintering, there is some restriction of using micro fines. It is possible to use in pelletization, but pelletization is a cost intensive process due to its high temperature curing.
Study on Mechanical Properties and Reduction Behavior of
Fines iron ore oxides are generated during mechanized mining as well as comminution, beneficiation, transportation, and agglomeration processes. These iron ore fines need to be taken care of and reused in ironmaking. The present work focuses on the utilization of those fines by agglomeration techniques and converting them into reduced …
Preparation of Iron Ore Micro-pellets and Their Effect on Sinter …
At present around 6–7% of iron ore slimes, out of total production, are being generated and accumulated at iron ore mine sites of National Mineral Development Corporation Limited, India. The accumulated slimes of finer size and relatively inferior grade should be utilized in an economical way for sustainable mining. These slimes can be …
Utilization of micro-fines in sinter making and its …
Exploiting low-grade resources and raw material fines is a challenge for metallurgists developing new technologies. Iron-bearing and carbonaceous by-products are generated by ironmaking and steelmaking units and fed into the sinter plant. These by-products, which have varying proportions of ultra-fines, balling properties, moisture retention capacities, …
An Innovative Approach for Utilization of Iron Ore Microfines …
An Innovative Approach for Utilization of Iron Ore Microfines (-150 microns) in Sintering. January 2019. DOI: 10.33313/377/052. Conference: AISTech2019. Authors: P. Sah. A. Kumar. M....
Application of deep learning in iron ore sintering process: a …
The sintering process is an intricate system with a protracted process flow. The steps in the manufacturing line are primarily composed of the ingredients and mixing process, the sintering operation process, and the treatment of the sintered ore [39, 40].2.2 Important parameters and characteristics of sintering process. As shown in Fig. 2, all …
Development of carbon composite iron ore micropellets by …
Iron ore microfines and concentrate have very limited uses in sintering processes. They are used in pelletization; however, this process is cost intensive.
Development of carbon composite iron ore micropellets …
Iron ore microfines and concentrate have very limited uses in sintering processes. They are used in pelletization; however, this process is cost intensive. Furthermore, the microfines of non-coking coal and other carbon-bearing materials, e.g., blast-furnace flue dust (BFD) and coke fines, are not used extensively in the …
Multi-objective Optimization of Integrated Iron Ore Sintering …
In the iron ore sintering process, it is desirable to maximize the productivity and quality of sinter while minimizing the fuel consumption for any given raw material (iron ore, flux and solid fuel) quality. However, given the complexity of the sintering process and the large number of manipulated variables, it is not practical for operators to identify …
Prediction and Optimization of Internal Return Fines …
Abstract. Prior to dispatch of sinter to the blast furnace for hot metal production, the sinter product from the sinter cooler is screened to remove smaller/finer particles. The undersize so generated is called internal return fines, which are generally …
Sintering: A Step Between Mining Iron Ore and Steelmaking
World resources are estimated to be greater than 800 billion tons of crude ore containing more than 230 billion tons of iron. The only source of primary iron is iron ore, but before all that iron ore can be turned into steel, it must go through the sintering process. Sinter is the primary feed material for making iron and steel in a blast furnace.
Disposal of zinc extraction residues via iron ore sintering
Zinc extraction residue, a solid waste generated from the treatment of zinc-containing dust in rotary kilns, is commonly stockpiled in steel companies for extended periods. It poses significant disposal challenges and environmental pollution risks. So far, research on the treatment of zinc extraction residues has been slow, inadequate, and …
Innovative Development on Agglomeration of Iron Ore Fines and Iron
ABSTRACT In steel industry and in mines, a significant amount of ultra-fines waste iron oxides and iron ore fines is generated. Utilizations of these fines are required to reduce the environmental hazards and conserve the natural resources. Some of these fines are normally used in sintering practice. However, sintering has a limitation of accepting …
Iron Ore Sintering: Raw Materials and Granulation
ABSTRACT. Sintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slag-forming elements and coke. The purpose of sintering is to obtain a product with suitable composition, quality and granulometry to be used as burden material in the blast furnace.
INFLUENCE OF IRON ORE MICRO-FINES ON SINTER …
Sintering of iron ore signifies incipient fusion of iron ore particles at temperatures near their melting point, resulting in formation of agglomerates. In this process heat is supplied by coke...
Preparation of Iron Ore Micro-pellets and Their Effect on Sinter …
The iron ore fines with less than 10 mm size are usually fed to the sintering process, and only limited fraction (less than 20%) of − 150 micron size of iron ore fines are allowed in the sintering process. The finer sized iron ore may choke the sinter bed and hinder the uniform air suction through the bed.
AN INNOVATIVE SOLUTION FOR REDUCTION IN …
In sinter making, Coke Breeze of-3mm size is added to the sinter charge along with the iron ore fines, lime stone and dolomite as a solid fuel for proper fusing of the charge into sintered lumps. ... Keywords:- Coke …
Utilization of Microfines in Iron and Steel …
Iron ore microfines are being Undesirable Constituents used in some of the Indian blast furnaces on regular practice. However, it is cost intensive as it involves with grinding and in duration at high temperature. ...
Iron Ore Sintering: Process: Mineral Processing and …
Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents, and solid fuel (coke). The purpose of the sintering process is manufacturing a product with the suitable characteristics (thermal, mechanical, physical and chemical) to be fed to the blast furnace.
Development of carbon composite iron ore micropellets …
estigators [10–11] have prepared the micro-pellets of iron ore microfines and used them to produce blast-furnace (BF)-grade sinter. However, the sufficient cold handling strength of these micropellets is require. to mini-mize the fines generation during their …
Prediction and Optimization of Internal Return Fines Generation in Iron
Prediction and Optimization of Internal Return Fines Generation in Iron Ore Sintering Using Machine Learning . × ... Sah, Marutiram Kaza, Manjini Sambandam and Prabhat Kumar Ghorui, An Innovative Approach for Utilization of Iron Ore Microfines (-150 microns) in Sintering, AISTech 2019, pp 495-499. [11] Ziming Wang, Takayudi Maeda, Ko-ichiro ...
A new disposal method for white mud: Replacing limestone in iron ore …
The pulp production process generates a CaCO 3-rich solid waste known as white mud (WM), and its improper disposal is a cause for global concern.The present study investigates the composition, microstructure, and thermal decomposition characteristics of WM and proposes a strategy for replacing limestone with WM for iron ore sintering.
Utilization of micro-fines in sinter making and its …
Iron-bearing and carbonaceous by-products are generated by ironmaking and steelmaking units and fed into the sinter plant. These by-products, which have varying proportions of ultra-fines, balling properties, moisture retention capacities, and so on, have a significant …
Prediction and Optimization of Internal Return Fines Generation in Iron
Li-Heng Hsieh, Effect of Iron Ore Concentrate on Sintering Properties, ISIJ International, 57, 11, 1937-1946, 2017. [10] Satendra Kumar, Arvind Kumar Jaiswal, Rameshwar Sah, Marutiram Kaza, Manjini Sambandam and Prabhat Kumar Ghorui, An Innovative Approach for Utilization of Iron Ore Microfines (-150 microns) in Sintering, …
Evaluation of Iron Ore Concentrate and Micropellets as …
ABSTRACT The use of iron ore concentrate and micropellets as sinter feed was evaluated. Five mixtures containing different proportions of concentrate and micropellets, together with iron ore fines, were granulated and sintered in a pilot scale sinter plant. It was found that the addition of iron ore concentrate and/or micropellets to …
Development of Pellet-Sinter Composite Agglomerate …
mixing with 50% of iron ore fine having a coating of rest 50% iron ore fines with bentonite as a binder. 2.2. Sintering Sinter mix was made with varying amount of fluxes viz. calcined lime (2%), lime stone, MgO containing flux (pyroxenite) and coke breeze along with 6–7% of water. The moist mixture was granulated in a rotating disc. Prepared
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