Use and Properties of Blast Furnace Slag as a Building Material A Review This paper aims at bringing a literature review on the uses and properties of popular industrial and mineral byproduct slag At the present most industrial slags are being used without taking full advantage of their properties or disposed rather than used
Large quantities of blast furnace BF slag and CO 2 are discharged annually from iron and steel industries along with a large amount of waste heat The mineral carbonation of BF slag can not only reduce emissions of solid waste but also realize the in situ fixation of CO 2 with low energy consumption if integrated with the waste heat utilization In this study based on our previous works
Blast furnace slag BFS is a non metallic industrial by product which is produced in blast furnaces by the melting of the iron ore producing molten pig iron 1 Worldwide more than 500 million tons of blast furnace slag are produced every year 2 The blast furnace slag can be granulated slag GBFS or air cooled blast furnace slag ACBFS
This study was carried out to investigate the mechanism of durability improvement of concrete caused by using blast furnace slag sand BFS The energy consumption characteristics related to nucleation and propagation of microcracks in concrete specimens subjected to cyclic compressive loading were quantified The following conclusions were
The blast furnace iron making process BFIMP is the key of the integrated steel enterprise for energy saving due to its largest energy consumption proportion
The blast furnace iron making process BFIMP is the key of the integrated steel enterprise for energy saving due to its largest energy consumption proportion
The blast furnace iron making process BFIMP is the key of the integrated steel enterprise for energy saving due to its largest energy consumption proportion In this paper an all factors analysis approach on energy consumption was proposed in BFIMP Firstly the BFIMP composition and production data should be collected Secondly the material flows and energy flows analysis models could be
In this process blast furnace slag was leached with recyclable ammonium bisulphate ABS to extract Ca Mg and Al Gaseous ammonia which is produced during ammonium sulphate AS roasting for ABS regeneration was used to capture CO2 in flue gases using a CO2 mineralization cell CMC to simultaneously generate NH4 HCO 3 and electricity
Slag is tapped from the blast furnace in 100 liquid phase at 1500 C and this thermal energy is not recovered that is roughly 1800 Megajoules per ton of slag equivalent to the combustion energy of 60 kg of coal Converter slag is tapped from the reactor at a temperature between 1550 and 1700 C its thermal content is about
fluxes Specific energy consumption for production of steel through primary and secondary routes is 14 MJ/Kg and 11 7 MJ Kg respectively Thus it leads to savings in energy by 16 17 It also reduces the water consumption and GHG emission by 40 and 58 respectively
reusing the waste water generated inside blast furnace in slag granulation system Flaring of BF gas minimised by efficient operation of flare control system Steel Melting Shop Total amount of LD gas recovered in Financial Year is 1 57 355 Gcal Total specific water consumption in Financial Year is 0 54m3/tcs Hot Strip Mill
Today blast furnace slag is a saleable product granulated slagsand for production of cement rather than a difficult and costly waste material Paul Wurth has developed the INBA slag granulation process incorporating our proprietary dynamic INBA dewatering drum as the most popular and effective means of processing blast furnace slag in
The normal blast furnace operation type is characterized by smooth inner wall surface and stable slag skin However in actual blast furnace production due to the influence of changes in the slagging system charging system air supply system thermal system and external raw materials the blast furnace operating furnace model will undergo changes
PFR for increasing the production capacity of Blast Furnaces by 58000 TPA Page 4 The existing twin Blast Furnaces of 173 3m volume each having Consent to Operate capacity 2 92 000 TPA are operating The production capacity enhancement to 3 50 000 TPA through process optimization could be done without stopping the BF
The specific energy consumption SEC is the energy consumption per ton of product produced in the ironmaking process 3 1 2 Extreme Difference and Intuitive Analysis According to the results of the orthogonal experiment the extreme difference and effect laws of each factor for r d and SEC are obtained and shown in Figure 3
2 1 Production Indexes 2 1 1 Productivity The average effective volume of the 19 large blast furnaces and productivity were 4539 15 m 3 and 2 15 t m 3 d respectively pared to other blast furnaces in China 9 the productivity of the large blast furnaces was small which was the same as the Japan blast furnace at the same period 7 This is mainly caused by the changes of the
Similarly coke consumption is feasible by using blast furnaces by 26 of coke saving/ton For this blast furnace having a top gas recycling service will be preferred While on the other hand if this furnace is combined with dry de dusting gas then it will reduce water consumption by 9 Nm3/tH and increase the power generation system by 30
Blast furnace slag BFS is the main by product of iron making and is produced in large amounts worldwide To improve energy use it is necessary to understand the thermal behaviour of slags under
One way to reduce energy and process emissions in cement production is to blend cements with increased proportions of alternative non clinker feedstocks such as volcanic ash granulated blast furnace slag from iron production or fly ash from coal fired power generation Blast furnace slag is a nonmetallic byproduct of the manufacture of pig
Moreover using nut coke in blast furnace could also improve the utilization efficiency of resources and indirectly save the energy consumption during coking process The coke rate of large blast furnace has already contained nut coke the average nut coke rate NCR was 36 61 kg/t accounting for 10 84 in coke rate Although the largest NCR
Mathematical Modeling of the Energy Consumption and Carbon Emission for the Oxygen Blast Furnace with Top Gas Recycling Peng Jin Zeyi Jiang Cheng Bao Yuanxiang Lu Zhang and Xinxin Zhang The ironmaking process is the most significant source of CO 2 emission in the iron and steel industry which generates large quantities of
Molten slags of blast furnace is a second resources with great value of 1600 1 800 MJ sensible heat per ton At present water quenching process plays a leading role in recovering waste heat of the
The schematic diagram of pig iron and blast furnace slag production process is given in Fig 1 Fig 1 Schematic illustration of pig iron and slag production process in a blast furnace 518 Dervis Ozkan et al Materials Today Proceedings 11 2019 516†525 3
Blast furnace Russian design upper shaft cooling sprayers for the charge use of slag tap hole 16 Blast furnace Reduction process MnO2 and Mn2O3 are reduced easily to MnO But MnO reduction occurs only directly with C and requires much more energy than FeO It takes place in the lower part of the furnace Three times more coke than for ironmaking
A large amount of dust is formed as one of the primary by products during the blast furnace ironmaking process Besides iron and carbon it contains a variety of valuable metals such as zinc lead and indium widely applied in many industry fields However it is difficult to recycle and reutilize blast furnace dust BFD due to complex composition fine particle size and strong hydrophobic
Blast furnace slag BFS is a non metallic industrial by product which is produced in blast furnaces by the melting of the iron ore producing molten pig iron 1 Worldwide more than 500 million tons of blast furnace slag are produced every year 2 The blast furnace slag can be granulated slag GBFS or air cooled blast furnace slag ACBFS
The quality of raw materials iron ore coal and coke has a clear impact on the carbon emissions of the hot metal production in steel making So far very little work has been done to measure and quantify this impact Yet for benchmarking technology choice and general carbon optimization are important elements The total slag production of a blast furnace gives an accurate and relevant
production of HRG and their injection into the blast furnace individual reactor gasifier for each tuyere TRG and reactor gasifier for the whole furnace FRG One of the blast furnaces or one stove can be used as the reactor gasifier if there is excessive blast or hot metal production
The Operation of Contemporary Blast Furnaces Provides essential guidance and suggestions for blast furnace operators by presenting a range of detailed real world cases based on the author s 60 years of experience This book focuses on how to keep blast furnaces running stably and smoothly with low consumption and long operating life spans
By using granulated blast furnace slag consumption of limestone the main raw material of cement is reduced by approximately 40 Also you can omit the calcinating process of limestone reducing energy consumption by approximately 40 These factors result in reducing CO 2 emissions produced during the manufacturing process by approximately 42
The pig iron production of large blast furnaces is accounted about 10 56 in total during 2017 2 Reducing the delay rate is the basis for safeguarding the stability and quality of blast furnace
Moreover using nut coke in blast furnace could also improve the utilization efficiency of resources and indirectly save the energy consumption during coking process The coke rate of large blast furnace has already contained nut coke the average nut coke rate NCR was 36 61 kg/t accounting for 10 84 in coke rate Although the largest NCR
An ironmaking blast furnace BF is a complex high temperature moving bed reactor involving counter co and cross current flows of gas liquid and solid coupled with heat and mass exchange and
The energy consumption and resource consumption of the system were 268 84 kg coal eq/t slag and 1213 60 kg/t slag respectively The main environmental impact came from the
the blast furnace operation Th e r e are some differences between different produ c er s conditions the slag form a tion systems a r a lso not the same such a s Langfang Sm e ltery who use the water quenched slag as filt e r i ng stuff for th e sewage from the gas cleaning
An ironmaking blast furnace BF is a complex high temperature moving bed reactor involving counter co and cross current flows of gas liquid and solid coupled with heat and mass exchange and
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