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Water-bentonite interaction in balling of iron ores

1973-8-1 · SUMMARY AND CONCLUSIONS In summary the following conclusions emerge on the role of bentonite. and its interaction with feed moisture in balling of an iron ore in a small batch balling device. 1. Water and bentonite have an opposite effect on the balling rate which increases with increasing water and decreasing bentonite contents of the charge.

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bentonite in iron ore processing

bentonite appliions as iron ore palletisation The main uses of Cyprus bentonite include drilling muds, foundry sand binders, civil engineering, iron ore palletisation and pet litter. Cyprus is known since the antiquity for its natural pigments such as umber, ochre and terra verde, all associated with the ophiolite.

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Water-bentonite interaction in balling of iron ores

The growth of granules in batch agglomeration of hematite iron ore powder with or without the presence of bentonite additive can be described by the non-random coalescence mechanism. The specific balling rate constant in the kinetic expression for median ball-size increases with increasing water content of the feed and decreases with addition of bentonite.

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IMPROVEMENT OF MECHANICAL STRENGTH OF IRON

2016-1-21 · Bentonite is primarily used for improving dry compressive strength of iron concentrate pellets so that they go through the processes such as smelting without much damage.

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Muller Mixing of Bentonite and Iron Ore Concentrate

2019-5-24 · The concentrate and bentonite fed to Number 5 balling cone on the Number 3 shaft furnace and the feed to the other furnaces are mixed by conventional plant mixers. Prior to mixing and balling the magnetite concentrate is ground to between 60 and

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Effects of binders on balling behaviors of iron ore

2004-1-6 · Results show that the organic binder markedly improved the natural ballability and the mechanical strengths but reduce the balling rate compared to bentonite. Investigation shows that the improvement in natural ballability by the binder is attributed to its increasing effect on the wettability on the surface of concentrates.

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Effects of bentonite fiber formation in iron ore

2002-7-1 · Bentonite is a significant cost item in iron ore pelletization, and also contributes undesirable amounts of silica to the finished pellets. If the binding effectiveness of bentonite is increased, it will be possible to reduce the bentonite dosage, resulting in significant cost savings while producing higher quality, lower silica pellets.

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The role of normal and activated bentonite on the

2003-2-19 · Effect of activated bentonite addition on the productivity of the high barite iron ore concentrate green pellets. The average drop number of green pellets increases while adding 0.5–1% activated bentonite and 11–13% water, Fig. 10. However, further addition of activated bentonite decreases the drop number.

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Binding mechanisms in wet iron ore green pellets with

2006-11-13 · The beneficial influence of viscous binders in iron ore balling is well known from everyday practical operations. The large variety of binders studied in the iron ore industry was recently reviewed by Eisele and Kawatra [9]. The most common binder is bentonite, of which additions of

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The bonding/strengthening mechanism of colemanite

Organic binders and colemanite were tested as alternative binder to bentonite. Colemanite was more effective than bentonite to get sufficient strength. Firing temperature can be lowered with addition of colemanite. Low firing temperatures will be beneficial to save energy in pelletization plants. Bonding mechanism was physical melting at the contact points of iron ore grains.

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bentonite addition in iron sinter plants

sintering iron ore process 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 Contact Supplier. 24/7 Online bentonite balling improvement

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Bentonite powder used in iron palletising plant-Henan

Bentonite Wikipedia. Bentonite has been widely used as a foundry-sand bond in iron and steel foundries Sodium bentonite is most commonly used for large castings that use dry molds, while calcium bentonite is more commonly used for smaller castings that use "green" or wet molds Bentonite is also used as a binding agent in the manufacture of iron ore pellets as

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Effects of binders on balling behaviors of iron ore

Effects of binders on balling behaviors of iron ore concentrates . An organic binder, Funa, has been developed and used in the production of iron ore pellets for direct reduction in China. This paper mainly describes the effects of the binder on balling behaviors of magnetite concentrates as compared to bentonite binder.

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bentonite and filter cake moisture in iron ore

We found that For example, when the filter-cake moisture is too high for balling, excess bentonite has to be added XI. AGGLOMERATION. The ore fines and/or flue dust are mixed with water, and a binder such as bentonite is added if essence, of mixing iron ore fines, moisture and the sinter cake is Bentonite Bentonite

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BENTONITE BINDER COMPOSITION US STEEL CORP,US

A common binder for iron ore fines is bentonite. Bentonite alone will greatly increase the structural strength of iron-ore pellets and aid in forming round pellets. The usual practice is to dry crude bentonite to approximately 6 percent by weight moisture and then grind it to approximately 80 percent minus 200 mesh prior to shipment.

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BENTONITE Tradeviser

BENTONITE. Bentonite is a clay generated frequently from the alteration of volcanic ash, consisting predominantly of smectite minerals, usually montmorillonite.The special properties of bentonite (hydration, swelling, water absorption, viscosity, thixotropy) make it a valuable material for a wide range of uses and applications as explained below.

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Study of Temperature Profile in the Induration of

2016-12-1 · The pelletisation study of magnetite iron ore fines starts with green balling using limestone and bentonite as additives. Heating cycle of iron ore pellets is one of the prime segments of the whole pelletisation process. Drying, pre-heating, firing and cooling processes are collectively named as heating cycle of the process. A temperature profile is maintained throughout the induration process

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KOBELCO Pelletizing Process

2011-1-6 · Iron ore must be shipped in bulk for maximum economy. 1.2 Pretreatment process In this process, the iron ore is ground into fines having qualities required for the subsequent balling process. The pretreatment includes concentrating, dewatering, grinding, drying and prewetting. In general, low-grade iron ore is ground into fines

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INFLUENCE OF HIGH INTENSITY MIXING ON GREEN BALL

2019-7-12 · Only a slight improvement in both drop number (9.3 to 10.2) and dry strength (11.2 to 12.5 lbs) were obtained with intensive mixing with 15 lbs./DLT bentonite binder on the flux pellet blend in the pilot balling disk . The acid pellet mix shows improvement in the drop number (8.6 to

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Improvement of production technology of iron-ore

Improvement of production technology of iron-ore pellets at balling plant Автор Sokolenko A. N., Shevchenko G. А, Shvyrev V. N., Egorov O. N. Реферат Production technology of iron-ore pelltets from concentrates of magnetic and flotation preparation, dolomite

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