blast furnace sinter lump rate

Blast Furnace - an overview | ScienceDirect Topics

Blast furnaces have grown considerably in size during the twentieth century. In the early days of the twentieth century, blast furnaces had a hearth diameter of 4–5 m and were producing around 100,000 THM per year, mostly from lump ore and coke. At the end of the twentieth century the biggest blast furnaces had between 14 and 15 m in hearth diameter, and were producing 3–4 million tons of ...

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Operating experiences with Corex and blast furnace at JSW ...

Blast furnace has a burden ratio of pellet/sinter/lump ore 5 50:40:10 and a coal Þnes injection of y 50 kg t 2 1 HM. The few important operating parameters monitored in BF are given in Table 6. The comparison of production from Corex-I and BF-I at JSW is shown in Fig. 2. It can be observed that Corex has been producing at rated capacity.

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New Trends in the Application of Carbon-Bearing Materials ...

Materials in Blast Furnace Iron-Making Hesham Ahmed 1,2 1 Minerals and Metallurgical Engineering ... one with highest production rate, is the BF which is basically dependent on high-quality metallurgical ... iron ores could be in form of iron ore lump, concentrate, pellets, or sinter. Iron

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Evaluation of lump ores for use in modern blast furnaces ...

about the use of lump ores in modern BFs, and indicate the technical direction for using lump ores. Keywords: Lump ore, Sinter, Interaction, Softening properties, Blast furnace, Blast burden Introduction The ferrous burden materials used in Chinese blast furnace (BF) are high basicity sinters, acid pellets and natural lump ores.

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PR-RU2017-6 - 2017 AIST Industry Roundups

Formed in January 2004 from the merger of the Iron & Steel Society and the Association of Iron and Steel Engineers, AIST is proud to be the #1 source for all your steel-related needs. We encourage you to explore all that we have to offer. From technology-based Operating Committees to our local Member Chapers, the opportunities to network with others and expand your technical know-how abound.

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Measures to influence the quality of the slag Blast ...

(lump ore, sinter and pellets) dolomite, additions Blast Furnace Slag coke, coal hot metal off-gas Grinding to powdered material (<300µm), to be used as blast furnace slag lime liquid blast furnace slag blast furnace process Measures to influence the quality of the slag Process stage 1) Measures to influence the quality Influenced properties

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CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

super-fluxed sinter in order to incorporate the lime required for fluxing the acid constituents during the smelting inside a blast furnace. Other parameters which has influence on the coke rate and blast furnace productivity are (a) reduction properties (RDI/RI) of sinter, (b) Fe content in the sinter, and (c) fines in the sinter.

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GASEOUS REDUCTION OF ISASMELT LEAD SLAG AND LEAD …

is moved from the sinter plant to the ISASMELT furnace [2]. Compared with a sinter plant, the ISAMELT furnace has the advantage that it is readily enclosed and produces a significant quantity of direct lead bullion as well as a high-lead slag suitable for feeding to a blast furnace. In addition the furnace produces a relatively low volume

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Blast-furnace. Operation of blast furnace. - Metallurgy.

The products of the blast furnace are pig iron (hot metal) and slag from the lower part of the furnace and flue dust and blast furnace gas from the top. Prepared raw materials for blast furnace namely sinter, iron ore lump, coke and additives like manganese ore, quartzite, limestone.

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Understanding Sinter and Sinter Plant Operations – IspatGuru

Mar 15, 2015· Use of sized sinter is desirable for the improvement of production rates in the blast furnace. Further, crushing the sinter to 30 mm size at the sinter plant yields a more stable sinter because the smaller size fractions are more resistant to degradation. A supervisory station controls all steps of the sintering process.

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Sinter plant - Wikipedia

Sinter plants agglomerate iron ore fines (dust) with other fine materials at high temperature, to create a product that can be used in a blast furnace.The final product, a sinter, is a small, irregular nodule of iron mixed with small amounts of other minerals. The process, called sintering, causes the constituent materials to fuse to make a single porous mass with little change in the chemical ...

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OPERATION AT HIGH PELLET RATIO AND WITHOUT …

In Europe, a major part of the burden in blast furnace operation consist of mixed burden with sinter, pellet and/or lump ore. The amount of sinter is dependent on sinter plant capacity and the sinter ratio is kept as high as possible, normally from half of the burden and higher. Pellet and lump ore are used to balance basic sinter.

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Blast Furnace Automation and Control

Blast Furnace Automation and Control 49 Table I. Results of Control Method. The production of the sinter plant delivered to the blast furnace skips was not impaired as it proved possi- ble to decrease the openings of the cold screen at the sinter plant from 8 mm square to 6 mm square, with screening at the blast furnace at

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For Peer Review - ResearchGate

For Peer Review 2.3 Experimental Methods (1) Interaction characteristics of mixed burden In this study, the test on the reducibility of the sinters, oxidized pellets and lump ores is

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Factors affecting Coke rate in a Blast Furnace – IspatGuru

Jun 29, 2014· High top pressure also reduces the coke rate in the blast furnace. With every increase of top pressure of the blast furnace by 0.1 kg/sq cm there is a reduction of around 0.1 % in the coke rate. Decreasing of fines content in the charge materials improves the coke rate of the blast furnace in the range of 0.4 % to 0.7 %.

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Increasing the Sinter Ratio at Isdemir's Blast Furnace#4 ...

and raising the Sinter ratio of Blast Furnace #4 was accomplished. 1. Introduction Most of the Blast Furnaces are using Sinter, pellets or lump ore. Iron ore fines are used to produce the Sinter in the Sinter Plant. Moreover waste material that is generated during other production processes in the Steel Plant can be recycled in Sinter Plant by ...

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© IEA ETSAP - Technology Brief I02 - May 2010 - ...

Blast Furnace (pig iron) – Blast furnace (Figure 2) is a process for producing liquid raw iron by smelting pellets or sinter in a reducing environment. The end products are usually molten metal, slag and blast furnace gas. In the reduction process, oxygen (O 2) is taken out of the pellets or sinter. Coke is often used as a reducing agent, as well

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Blast Furnace operation: 2011

Dec 15, 2011· Blast Furnace Slag is formed when iron ore or iron pellets, coke and a flux (either limestone or dolomite) are melted together in a blast furnace.When the metallurgical smelting process is complete, the lime in the flux has been chemically combined with the aluminates and silicates of the ore and coke ash to form a non-metallic product called blast furnace slag.

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Influence of High Temperature Interaction between Sinter ...

2.1. Raw Materials. Raw materials used in this work were sinter and lump ores, S-1 is sinter of high basicity from China, L-1 is a typical hematite lump ore from South Africa, L-2 is a typical limonite lump ore from Australia, all these raw materials are in actual use for blast furnace in China.

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Sintering of Iron Ore | Carmeuse

Using sinter in place of lump ore and pellets helps to reduce blast furnace fuel rate and CO 2 emissions. Adding fluxed sinter feed to the blast furnace increases softening and melting temperature and improves reduction. Sinter strength plays an important role in deciding PCI rate in the blast furnaces.

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INTERACTION BETWEEN LUMP ORE AND SINTER UNDER …

Increasing the lump ore proportion in the blast furnace (BF) burden is an effective way to decrease the overall cost of hot metal, environmental impact and energy consumption of ironmaking.

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PR-RU2019-5 - 2019 AIST Industry Roundups

Formed in January 2004 from the merger of the Iron & Steel Society and the Association of Iron and Steel Engineers, AIST is proud to be the #1 source for all your steel-related needs. We encourage you to explore all that we have to offer. From technology-based Operating Committees to our local Member Chapers, the opportunities to network with others and expand your technical know-how abound.

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Quality Improvement of Sintered Ore in Relation to Blast ...

As a result, the blast furnace attained a productivity coefficient as high as 2.37 t/d/m3 and a high ore/coke rate of 4.87 with a PCR of 161 kg/t-pig11). 3.2 Improvement of blast furnace operation by decreasing Al2O3 content in sinter Further extending the line of the above tests, in 2001 another series of tests were conducted for decreasing ...

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UDC 622 . 785 . 5 : 669 . 162 . 26 . 012 . 4 Quality ...

viscosity of the blast furnace slag were adequately maintained by composition control without top charging of lump flux (Case 2 of Table 1). As a result, the blast furnace attained a productivity coef-ficient as high as 2.37 t/d/m3 and a high ore/coke rate of 4.87 with a PCR of 161 kg/t-pig11). 3.2 Improvement of blast furnace operation by ...

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What is the difference between pellets and sinter? - Quora

Jun 11, 2017· What is Pelletization? The process of Pelletization helps converting Iron Ore Fines into "Uniform Size Iron Ore Pellets" that can be fed in the blast furnaces or in the DRI kiln (DRI). Why Pelletization? Pelletization is the only answer to a major...

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Latest Generation Sinter Process Optimization Systems

Latest Generation Sinter Process Optimization Systems 7 3.2.1.1 Calculation of material ratios (backward calculation) The aim of this calculation mode is to calculate the set-points for the raw material system (material ratios) in order to reach the chemical sinter composition with the desired results. Fig. 5. Backward Calculation Procedure.

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Why Chinese steelmakers are using less scrap in their ...

Jul 10, 2019· Scrap can be charged at a maximum rate of ~10% of the Fe burden A BF requires ~960 kg of Fe burden to produce 1 tonne of hot metal (i.e. 960 kg/thm) and, due to the respective Fe contents of sinter, lump and pellet, this typically requires a total of ~1.6 t of iron ore burden to be charged.

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LKAB's Experimental Blast Furnace - The learning curve

furnace pellets and blast furnace operations in the years to come. The EBF will be modified for testing of full oxygen blast furnace concepts for reduction of CO2 emissions within the scope of the ULCOS project. Introduction LKAB's experimental blast furnace, Figure 1, was commissioned in 1997 after study of the world's previous experimental ...

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Blast furnace - Wikipedia

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.

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Modern Blast Furnace Ironmaking - Google Books

Describes the principles of the blast furnace process and especially the control of the process. This book focuses on the control of the blast furnace process with respect to thermal control, gas flow control and casthouse operation. It is suitable for students of metallurgy as well as for blast furnace …

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