A comparative reduction behavior of wüstite samples prepared from iron ore sinter was investigated to find the optimum way for reducing coke consumption and CO 2 emission in blast furnace technology A series of wüstite reduction experiments was
coke reacts in the same way, char consumption is lim-ited In case char remains in the blast furnace, it will reduce gas permeability in the furnace and become an obstacle to passage of liquids, ie, molten pig iron and slag droplets, causing unstable blast furnace operation Accordingly, when selecting a supplementary reducing
May 11, 2017· With the torches operating, the blast furnace production increased, coke consumption was reduced, and operational flexibility improved By 1986, eight 2-MW torches were installed to enhance the blast furnace operation
Feb 28, 2015· Abstract With falling blast-furnace demand for reducing agents, direct reduction has a clear influence on coke consumption, not only directly but also indirectly on account of the smaller improvement in smelting conditions with decrease in the demand for heat
Coke consumption in the blast-furnace ranks among 300 - 600 kgt-1 of the pig-iron depending mainly on the content of the deads in the charge As the consumption of the metallurgical coke .
Dec 02, 2017· Use of Nut Coke In a Blast Furnace , specific consumption level of over 100 Kg/tHM by 2004–05 These days the use of nut coke as an alternate to BF coke in blast furnace ,
The coal consumption rate of the COREX process is found higher than the coke consumption rate of the conventional process; however, the total energy consumption for the COREX process compares well with that of the blast furnace The COREX process also generates surplus gas of high heating value which is suitable for many applications
BLAST FURNACE STOVE DOME AND HOT BLAST MAIN The quality and composition of iron produced in the blast furnace is directly related to the hearth temperature This, in turn, is dependent on the temperature of the hot blast delivered from the , coke consumption, are more cost-effective However, temperatures that exceed the working limit of the .
The metallurgical coke in the blast furnace acts as a reducing agent, energy carrier, and support medium for the burden material By implementation of new concepts of blast furnace operation, the coke consumption may be decreased to 200 kg/t hm 
Injection Into the Blast Furnace at Acme Steel Company (300 lb/THM Level) 1 Executive Summary Supplemental fuels are injected at the tuyere level of blast furnaces to reduce coke consumption and increase productivity These fuels include natural gas, coke oven gas, oil, tar, and coal The economic benefits derived from supplemental
This statistic displays the consumption of blast furnace gas and coke oven gas energy in Finland from 2007 to 2017 During the period under survey, consumption of energy from blast furnace gas and .
Blast furnaces used in the ISP have a more intense operation than standard lead blast furnaces, with higher air blast rates per m 2 of hearth area and a higher coke consumption  Zinc production with the ISP is more expensive than with electrolytic zinc plants, so several smelters operating this technology have closed in recent years 
Supplemental fuels are injected at the tuyere level of blast furnaces to reduce coke consumption and increase productivity These fuels include natural gas, coke oven gas, oil, tar, and coal
Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace The carbon monoxide produced by its combustion reduces iron oxide in the production of the iron product ( + +) Coke is commonly used as fuel for blacksmithing
Feb 25, 2018· Coal is not directly used in blast furnace, coke is used directly Part of coke is replaced with coal dust injection It reduces the cost of hot metal as well as we can inject more oxygen to maintain the RAFT so the production is increased Coal i.
111 Coke-making process Blast furnace coke is produced by heating coking coal to high temperature in the reducing atmosphere of the coke oven The coal-to-coke transformation is illustrated in Figure 1 The coal mix is heated from the oven walls on each side of the coke oven and two plastic layers are developed on each side and converge
Apr 23, 2018· The quality of the coke has a clear influence on coke consumption and blast-furnace economics As an illustration, for some of the equations derived, means are established for predicting the economic benefit associated with improving coke quality and reducing its consumption, in specific blast-furnace conditions
Blast furnace and metallurgical coke’s reactivity and its determination by thermal gravimetric analysis J I Rodero1, J Sancho-Gorostiaga1, M Ordiales1, D Ferna´ndez-Gonza´lez1, J Mocho´n2, I Ruiz-Bustinza2, A Fuentes3 and L F Verdeja1 The aim of the present work is to adapt tests that are typically used for blast furnace cokes, such
Nov 14, 2013· In spite of innovations mentioned above the raw material costs of blast furnaces remain higher than those of submerged arc furnace due to high cost of coke With the exception of SFPO, blast furnace production cost are higher than the average production cost of ferromanganese in electric furnac
1) Figures above are monthly total export volumes / average monthly fob export prices for blast furnace coke shipped from Poland or the Czech Republic 2) All prices are expressed in Euros per metric tonne For earlier historic coke pricing data or to request a price forecast, please contact
coke by PCI Both economic and environmental pressures demand a reduction on the reliance of coke consumption in blast furnace process At low coke rate operation, less coke is available in the burden to maintain the gas/liquid permeability
Blast Furnace Gas Blast furnace gas is a by-product of blast furnaces where iron ore is reduced with coke into metallic (pig) iron The gas has a very low heating value of around 09kWh/Nm 3 , which on its own is typically not high enough for combustion in a gas engine
Apr 27, 2013· Use of Nut Coke in a blast furnace Metallurgical coke is produced during the carbonization of coking coal blend in a coke oven battery This coke is produced normally in three size fractions namely coke breeze (size – 10 mm), nut coke (size +10 mm to – 25 mm) and blast furnace (BF) coke (+ 25 mm to – 80 mm)
We plan to optimize blast furnace operation utilizing CFD models of these furnaces on high performance computers • ~15 billion tons/yr of Iron ore is processed in blast furnac • Steel Production is the 4th largest energy consumer in the US • We plan to reduce coke consumption in a working furnace by 5% CPS Agreement Number:29332
Evraz NTMK to optimize coke consumption at new blast furnace Coke consumption may be cut as much as fifty percent using a coal reactor to furnish carbon monoxide for ore reduction in a blast furnace while lowering the sulfur content of pig iron accompanied by a smaller slag volume
Us Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace The carbon monoxide produced by its combustion reduces iron oxide (hematite) in the production of the iron product Coke is commonly used as fuel for blacksmithing
The degree of direct reduction and the coke consumption in the blast furnace, which are not independent variables, are determined by the carbon-demand ratio for physical and chemical process
Of the total coke consumption for each of these years, greater than 99% was by blast furnac Four other sources of energy play significant role in blast furnace operation, namely natural gas, blast furnace gas, fuel oil, and coke oven gas Through the next decade at least, the energy consumption profile will continue to change significantly
Sep 03, 2018· This statistic represents coal consumption of coke ovens and blast furnaces in the United Kingdom (UK) between 1970 and 2017, in thousand metric tons
A world class blast furnace operation demands the highest quality of raw materials, operation, and operators Coke is the most important raw material fed into the blast furnace in terms of its effect on blast furnace operation and hot metal quality A high quality coke should be able to support a .