Theoretical and experimental investigation of oxygen blast furnace .A novel oxygen blast furnace process, which is characterised by blasting pure oxygen instead of conventional hot air, together with injecting powdery coal and hydrogen rich gas is proposed in this paper, and feasibility of the process is discussed. A theoretical model is established based on mass and energy balances of the.blast furnace characterised,A review on nut coke utilisation in the ironmaking blast furnaces .May 13, 2016 . In the ironmaking blast furnaces, nut coke (10–40 mm; 2–23 wt-%) is charged together with the ferrous burden. A systematic review is performed to understand the effects of nut coke use on the permeability, thermal reserve zone (TRZ), reduction kinetics and softening & melting behaviour. State of the art.
Modelling of Liquid Flow in the Blast Furnace. Theoretical Analysis .In turn, molten iron and slag undergo physical and chemical changes, and are redistributed radially during descent to the hearth. Using a 'force-balance' approach, the flows of liquid in the blast furnace were characterised. A consistent set of equations describing liquid holdup, gas–liquid interaction and solid–liquid.blast furnace characterised,A mathematical model to characterise effects of liquid hold-up on .A first principle based mathematical model has been developed to characterise the effect of total liquid hold-up on the bosh silicon distribution behaviour in the dripping zone of a blast furnace. Two specific cases of hold-up behaviour have been investigated, namely, hold-up in the absence and in the presence of counter.John Frank
Characterisation of Fracture. Mechanisms in a Blast Furnace. Coke. Dr Richard Sakurovs. CSIRO Energy. Dr Richard Roest, Dr Hannah Lomas and A/Prof Merrick Mahoney. School of Engineering, Newcastle Institute for Energy and Resources. University of Newcastle. Dr Riku Kanniala. SSAB Europe. Dr Sushil Gupta.
Sep 18, 2012 . significant attention paid to the change resulting from fluctuation in blast furnace gas. H2 fraction. The study characterised the observed sensitivity to change in flame speed and discussed the implications with regard to practical combustion systems. Several methods of reducing the measured fluctuation are.
In turn, molten iron and slag undergo physical and chemical changes, and are redistributed radially during descent to the hearth. Using a 'force-balance' approach, the flows of liquid in the blast furnace were characterised. A consistent set of equations describing liquid holdup, gas–liquid interaction and solid–liquid.
In Part 1 of this report, the flows of molten iron and slag in the blast furnace were characterised using a 'force-balance' approach. In this paper, the incorporation of a molten iron and slag flow submodel into a comprehensive numerical model of the blast furnace is discussed. Liquids are generated from ore during descent.
Oct 31, 2007 . A suite of tuyere-level coke samples have been withdrawn from a working blast furnace during coal injection, using the core-drilling technique. The samples have been characterized by size exclusion chromatography (SEC), Fourier transform Raman spectroscopy (FT-RS), and X-ray powder diffraction.
Postprint of a paper published in Cement and Concrete Research, 66(2014):64-74. Version of record is available at dx.doi/10.1016/j.cemconres.2014.07.006. 1. Characterisation of Ba(OH)2–Na2SO4-blast furnace slag cement-like. 1 composites for the immobilisation of sulphate bearing nuclear wastes. 2. 3. 4.
Thermal Distributive Blast Furnace Gas. Characterisation; a Steelworks Case Study. Tata Port Talbot Steelworks. Daniel Pugh – Ph.D Research Student. Cardiff University School of Engineering. Sustainable Thermal Energy Management in the Process Industries. International Conference (SusTEM2011).
Abstract: Nowadays blast furnace operation is supervised by extensive measurements and. controlled accordingly. Characteristic . Keywords: blast furnace, process analysis, fuzzy clustering, multilayer perceptron, identifica- .. Each cluster centre represents a (fictitious) sample that characterises the respective. class best.
The present study is conducted to verify the possibility of thermal valorisation of a waste, denominated fluff, by injection in blast furnace. The fluff, arising from the automobile shredder operations, is a waste characterised by a high organic matrix and is potentially dangerous due to the heavy metals, oils filter and halogenated.
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the combustion air being "forced" or supplied above atmospheric pressure. In a blast furnace fuel (coke), ores, and flux (line) are continuously.
In the present study, durability and compressive strength in cement grout prepared with blast furnace slag cement at different w/c ratios are characterised and compared to the findings for a reference portland cement grout. The results show that slag grout exhibits greater durability than the portland cement material and.
resulted in increased cold strength compared to when flue dust is added. Additionally, the test results indicate that the amount of binder added can be decreased. Characterisation of the flue dust. The flue dust contains fine particles of the blast furnace burden materials. The main components are pellet fines and coke fines,.
The performance of an Algerian blastfurnace slag has been assessed by examining the parameters influ- encing reactivity in a comparative study of . strength development and heat of hydration for two blastfurnace slags; one from Canada and the . Characterisation of unhydrated materials. The data presented in Table 1.
Jul 25, 2013 . Cold bonded artificial aggregates were characterized by determining physical and mechanical properties . Keywords: cement kiln dust; granulated blast furnace slag; marble sludge; cold bonding . raw material, such as granulated blast furnace slag (GBFS), coal fly ash (FA) and silica fume (SF) in order to.
designed to correlate with actual operation prevailing in the blast furnace. In the present paper more emphasis will be given to both physical and physico-chemical characterization. PHYSICAL CHARACTERIZATION. The essential physical properties which are normally characterized are i). Specific gravity ii). Bulk density iii).
Anglo American Kumba Iron Ore (Value-in-Use group) is greatly acknowledged for providing different raw . using an infrared furnace on laboratory scale and sinter pots on pilot plant scale. Five sinter mixes were . and energy dispersive spectrometry (EDS) were used to characterize sintering reactions and sinter phases.
Sandro de O Almada – Analysis of technical viability of mixture of benefited steelmaking slag (electric arc furnace) and granulated blast furnace slag (charcoal) as mineral admixtures, paper. Yiannis Pontikes – Synthesis and characterisation of calcium sulfo-ferroaluminate cement clinker prepared with bauxite residue as.
For comparison, test specimens made from ordinary Portland cement (OPC), and blast-furnace slag Portland cement. (BFSPC) with .. OPC mortar is characterised by slightly increased CaO and slightly . Chemical resistance of Portland cement, blast-furnace slag Portland cement and sulphoaluminate-belite cement in.
Recent developments in Blast Furnace operation, characterised by long campaign life combined with ever increasing productivity and high rates of fuel injection, require high efficiency top gas cleaning equipment to cope with the changes in top gas composition, dust loading, pressure and temperature fluctuations and.