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EFFECT OF SIZE DISTRIBUTION AND WATER CONTENT ON ...

such inherent advantages as densification and prevention of dust losses, the pelletization of iron ore has been found to markedly increase the efficiency of the blast furnace operation. This is due to the spherical shape and close size range of pellets which give a charge evenly distributed across the blast furnace …

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SINTERING AND PELLETISATION OF INDIAN IRON ORES

ADVANTAGE OF USING PELLETS IN BLAST FURNACE Improved productivity Reduced specific consumption of Coke especially with PCI (widely practiced in most of the Chinese Mini Blast Furnaces) The charge mix is 40: 60 ratio instead of sized ore 0-5 mm fines can be utilized & charged …

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Behaviour of kaolinite coated olivine pellets in blast furnace

Behaviour of kaolinite coated olivine pellets in blast furnace P. L. Hooey *1, K. Zarins 2, A. Dahlstedt 1 and H. Annersten 2 Production olivine fluxed blast furnace pellets were coated with a water based slurry of kaolinite to give a coating of 5 kg t 2 1 pellets. The LKAB experimental blast …

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Production and Usage of Self-Reducing Pellets in Blast ...

blast furnace of Dnipropetrovs’k Metallurgical Works named after Petrovsky [7]. The amount of pilot pellets in the charge comprised the range from 47 to 57%. The advantage of pellets with a residual carbon as compared to oxidized ones (see Table 1) is the …

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Lecture 26: Iron making in blast furnace

blast furnace is around 25 to 30m. It must be mentioned that blast furnace is a very efficient reactor both in terms of heat and mass exchange between solids and gases. Blast furnace operation In the blast furnace burden (consists of iron ore sinter/pellets +coke +limestone/lime) at 298K is charged

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Pellets for Direct Reduction - 911metallurgist.com

Table of ContentsProperties and Quality DemandsMetallurgical Test MethodsLKAB Pellets for Direct Reduction The iron ores mined by LKAB in the north of Sweden have excellent beneficiation properties. This gives LKAB a favourable position as regards the production of low silica pellets for direct, reduction. LKAB have concentrated on developing and marketing grades of pellets for the Midrex ...

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Blast furnace | metallurgy | Britannica.com

Blast furnace, a vertical shaft furnace that produces liquid metals by the reaction of a flow of air introduced under pressure into the bottom of the furnace with a mixture of metallic ore, coke, and flux fed into the top. Blast furnaces are used to produce pig iron from iron ore for subsequent

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Blast Furnace operation: HOW A BLAST FURNACE WORKS

Aug 04, 2011· The purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called "hot metal". The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom.

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JP2003301205A - Method for charging blast furnace material ...

PROBLEM TO BE SOLVED: To provide a method for charging blast furnace materials, which enhances a gas utilization factor to the maximum, and reduces a fuel ratio without deteriorating permeability of the air and a liquid, by using agglomerated ore including carbonaceous materials, even under the condition that the charge weight of the agglomerated ore including the carbonaceous …

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What is the difference between pellets and sinter? - Quora

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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why sinter is preferred over pellet - greenrevolution.org.in

The present sinter and pellet plant capacities can be enhanced much further along with assessment .... Pellets are preferred feed for blast furnace and DRI units in view of better metallurgical .... 21) is a major advantage over conventional DRI. Read more

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Use of Iron Ore Pellets in Blast Furnace Burden – IspatGuru

Jun 13, 2014· Use of Iron Ore Pellets in Blast Furnace Burden Pelletizing is a process that involves mixing very finely ground particles of iron ore fines of size less than 200 mesh with additives like bentonite and then shaping them into oval/spherical lumps of 8-20 mm in diameter by a pelletizer and hardening the balls by firing with a fuel.

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Production of Iron-Ore Pellets with an Organic Binder | V ...

Production of Iron-Ore Pellets with an Organic Binder. ... impurities and provides advantages such as low-grade iron ore evaluation. ... content of the pellet charge to blast furnace leads to an ...

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Pelletizing - Wikipedia

Pelletizing is the process of compressing or molding a material into the shape of a pellet.A wide range of different materials are pelletized including chemicals, iron ore, animal compound feed, plastics, and more.

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Pellet manufacturing charge - russianpatents.com

SUBSTANCE: pellet manufacturing charge includes manganese raw material in the form of manganese concentrate, slag formation flux, reducing agent and binding agent. As binding agent, it contains slag as a result of melting of metal manganese, which is pre-crushed till specific surface area of 450-500 m 2 /kg in quantity of 7-14%.

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blast furnace charge sinter and pellets | mobile crusher ...

The choice of pellets in a mixed blast furnace burden and how - LKAB (sinter-pellet-lump ore) burdens this has not always been regarded as an advantage, as it is the properties of the mix that . KPBA type pellets have been charged to the LKAB Experimental Blast Furnace for several periods, sometimes as …

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Blast Furnace Slag - Material Description - User ...

Granulated Blast Furnace Slag. Granulated blast furnace slag is a glassy granular material that varies, depending on the chemical composition and method of production, from a coarse, popcornlike friable structure greater than 4.75 mm (No. 4 sieve) in diameter to dense, sand-size grains passing a …

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Iron Ore Processing for the Blast Furnace - steel.org

blast furnace process. The iron ore concentrate is now mixed and ready for the pelletizing process. Pelletizing A pellet plant contains a series of balling drums where the iron ore concentrate is formed into soft pellets, in much the same manner that one rolls a snowball, to make a pellet about the size of a marble (between 1/4" and 1/2").

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Blast Furnace Top Charging Systems – IspatGuru

Oct 11, 2013· Blast Furnace Top Charging Systems. In earlier days, blast furnace (BF) top used to be open with the gas from the furnace escaping into the atmosphere and burning, causing environmental issues while wasting considerable energy. By 1850 as the …

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3 Iron Unit Recycling - Department of Energy

3 Iron Unit Recycling On a weight basis, steel is the most recycled material in use today (Figure 3-1). The 70 million net tons of steel recycled in 2000 were used to produce about 112 million net tons of new steel in the United States.

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Sinter plant - Wikipedia

Blast furnace-grade sinter consists of particles sized 5 to 12 mm as well as 20 mm and above. Advantages. There are certain advantages of using sinters as opposed to using other materials which include recycling the fines and other waste products, to include flue dust, mill scale, lime dust and sludge.

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Blast Furnace Slag - Material Description - RMRC

Blast Furnace Slag - Material Description ORIGIN In the production of iron, iron ore, iron scrap, and fluxes (limestone and/or dolomite) are charged into a blast furnace along with coke for fuel. The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product.

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Effect of Recycling Blast Furnace Flue Dust as Pellets on ...

mm) with blast furnace flue dust pellets (2.8-7 mm) as a substitute of coke breeze as a reducing agent (i.e. the carbon content in the charge must be equal to the carbon content in 6% coke breeze), 2% calcium chloride added for dezincification of blast furnace flue dust,

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th SEM B TECH DEPARTMENT OF METALLURGY AND …

BLAST FURNACE PRODUCTS AND THERE USE SIZE OF BLAST FURNACE Design of blast furnace is evolved through experience . Calculation of blast furnace size is empirical in nature. Hearth dia of possco b/f increases from 9.5-13.5 Hearth area increased from 1660 mtr sq -3800 mtr sq . Now there are nearly 700 blast furnace available in world.

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What are the benefits and disadvantages of a pellet stove ...

This overview of the benefits and disadvantages of pellet stoves will help you gain a better insight. Benefits. The biggest advantage of the pellet stove is its ease of use thanks to the automatic ignition, the power modulation and the fact that these stoves can be programmed.

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US4168966A - Agglomerates for use in a blast furnace and ...

Agglomerates for use in a blast furnace containing a cementitious material and formulated to maintain the CaO to SiO 2 ratio in a range of from 1.2 to 1.9 and the slag forming ratio in a range of from 13 to 19% which when charged in a blast furnace assume an improved drafting aspect in the smelting reaction zone. The as-formed discrete moist agglomerates are to be cured without the necessity ...

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iron ore pellets versus sinter in blast furnace

Blast Furnace Ironmaking Process Using Pre-reduced Iron Ore197 Кб. Fine ore is a raw material for sinter that is the main component of the blast furnace burden.A fluidized bed is used when reducing fine iron ore directly5-7), whereas a shaft furnace is used when reducing lump ore or pellets.

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The Effect on Blast Furnace Process of Changed Pellet Size ...

In the third example one of the pellet silos is emptied and the particle size distribution of pellets is changed to only about 59% fraction 9-12.5mm pellets and about 38% fraction 12.5-16mm pellets. The blast furnace is on all-coke operation when these pellets are charged. The only effect that can be seen on the blast furnace process

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What are the pros and cons of the blast furnace method of ...

Sep 07, 2017· Hi Zak, I regret that I don’t have access to shareable figures on costs, but I would like to give you some thoughts to help you get the answers you seek. The blast furnace is the most significant source of New Iron units for the steel industry. Mu...

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Iron ore pelletizing systems -

Iron ore pelletizing systems. Iron ore fines are agglomerated into pellets and then indurated using a furnace to create iron ore pellets. These are typically fed to a blast furnace or DRI plant as part of the process to make steel.

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