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Bentonite is the traditionally used binder in iron ore pelletization. However, it consists of up to 85% silica and alumina which are undesired acidic gangue in iron-making.
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The highest swelling occurs (25–26%) at a certain time, for both case pellets using bentonite and PA binders it is about 45 min soak time. After this time, a decrease in the volume of reduced iron ore pellets was observed as reduction time increases. The pellets were reduced at 1000 °C have undergone shrinkage because of high heat intensity.
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The most common binder is bentonite clay, which contains silica and remains in the pellet through the induration process. Silica is problematic in direct …
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Bentonite clay has traditionally been used as a binder to make iron ore concentrate pellets, but it is expensive and contaminates the pellets. Organic binders may be a viable alternative to ...
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The most popular binder for this purpose is bentonite clay, which is added at a rate of approximately 0.5–1.0% by weight of moist concentrate. Bentonite is a …
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PDF | On Jan 2, 2015, Aim Gül and others published Improvement of mechanical strength of iron ore pellets using raw and activated bentonites as binders | Find, read and cite all the research you ...
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The replacement of bentonite as the standard iron ore binder is an important factor in the future of iron processing. Bentonite adds unwanted silica to the final concentrated iron ore product. Excess silica from bentonite addition has been calculated to consume approximately 2.4 MJ of additional energy during the production of one metric ton of pig …
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5. Conclusions Iron ore pelletization with bentonite binder works by a different binding mechanism than with FBB. Bentonite is a physical binder, while FBB is a pozzolanic binder. Iron ore concentrate pellets produced with up to 50% of the bentonite replaced by fly-ash exceeded minimum industrial specifications for dry compressive strength.
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The most common agglomeration technique is pelletization, which requires the use of binders to hold the iron oxide grains together so that the agglomerates can …
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Abstract. Anew kind of iron ore pellet binder named humic acid modifying bentonite (HA-) has been developed by the author's group, which has the advantages of both organic HA and inorganic ...
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The most common agglomeration technique is pelletization, which requires the use of binders to hold the iron oxide grains together so that the agglomerates can be sintered into high-strength pellets. Although bentonite clay is the most commonly used binder, there are many other possibilities that could be competitive in a number of …
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Characterization of iron ore pellets with dextrin added organic binders under different time and temperature conditions. In the present work, Dextrin is used as a binder for iron ore pelletization, as it's free from Silica and Alumina. Green pellets were prepared by mixing of iron ore particles (-75 μm) with varying….
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Production of iron ore-pellets with an organic binder. Metallurgist 47, 3–4. of thermally treated magnetite pellets when compared with the de Souza, R.P., de Mendonca, C.F., Kater, T., 1984. Production of acid iron ore pellet for performance of reference bentonite binders. direct reduction using an organic binder.
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Starch has shown promise as a potential replacement binder for bentonite; other alternatives such as fly-ash have also been considered. Starches with solubilities ranging from 7.5-60% have been ...
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Bentonite clay has been the traditional binder for iron ore pellets. However, bentonite increases pellets' silica contents and is expensive. Researchers have …
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Abstract. Anew kind of iron ore pellet binder named humic acid modifying bentonite (HA-) has been developed by the author's group, which has the advantages of both organic HA and inorganic bentonite. The green pellet strength can be obviously improved by using the HA- binder. In this study, the detection of the characterization of HA- ...
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The most common binder is bentonite, of which additions of 0.5–0.7% are usually made. During the past decade, many articles have been published regarding …
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Introduction Bentonite is the conventional binder in iron ore pelletization and used at 0.5–1.5% addition levels in the pellet feed by weight of iron ore [1–3]. It controls the moisture of iron ore concentrate in the pellet feed and improves physical properties of the wet, dry, pre-heated and fired pellets. However, there are some ...
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The residue of bentonite after roasting mainly contains SiO 2 and Al 2 O 3, leading to a 0.4~0.6 % decrease in pellets iron content for every 1.0 % increase in bentonite content of raw materials ...
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open access. Abstract. The decrease in the total iron grade of pellets due to bentonite has prompted the search for a non-polluting and alternative binder. While …
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In iron ore pelletizing binder is a very important factor because it controls the green pellets as well as indurated pellet properties. Bentonite is suitably used as a binder for iron ore pellet ...
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The reducing gas hydrogen, the inert gas argon, and the inert gas nitrogen were purchased from Nippon Gases. Iron ore pellets, which were delivered by voestalpine Stahl , were used as a reference in the reduction tests. These iron ore pellets had a mean iron content of 66.1 wt%, with the iron being in the form of Fe 2 O 3. The grain …
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High-Quality Sodium Bentonite is widely used to turn iron ore fines into pellets that can be transported to the kiln NATIONAL® STANDARD PG National Standard PG natural sodium bentonite is an excellent low-cost option for use as an inorganic binder in production of iron ore pellets.
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Abstract. Bentonite clay has been the traditional binder for iron ore pellets. However, bentonite increases pellets' silica contents and is expensive. Researchers have proposed lowering bentonite ...
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Abstract. Bentonite is the most common binder in iron ore pelletization. In the present work, laboratory experiment as well as basket trials were carried out with partial replacement of bentonite ...
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Bentonite is an effective, widely used binder in the iron ore pelletizing process. Its low price is an important factor for its extensive …
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Abstract. Organic binders have been used as alternative to bentonite in the iron ore pelletizing process mainly because it burns without leaving residue in the pellet. There are two main types of ...
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Abstract. In the ironmaking process, the addition of an organic binder to replace a portion of bentonite has the potential to improve the performance of pellets. …
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Bentonite clay has traditionally been used as a binder to make iron ore concentrate pellets, but it is expensive and contaminates the pellets. Organic binders may be a viable alternative to ...
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Bentonite is the most commonly used binder for iron ore pellets. However, due to its high alumina and silica content, the slag volume and energy consumption are increased.
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