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ALTERNATIVE BINDERS TO BENTONITE FOR IRON ORE . The use of conventional bentonite binder is favorable in terms of mechanical and metallurgical pellet properties, however, because of its acid constituents bentonite is considered as impurity especially for iron ores with high acidic content.
Iron ore pellet feed fines (PFF) The iron ore pelletizing process is marked by spherical pellets in a narrow grain size distribution ranging between 9 mm and 15 mm. The raw material in the process consists of iron ore ( 100 μm), binders ( ben tonite) and additives such as coal dust. The moisture of the raw material can be variable.
In iron ore pelletization, bentonite is commonly used as an agglomeration aid to augment pellet growth and add physical strength to the pellets. While bentonite is effective as a binder it has a contaminating effect on the chemical quality of the pellets, adding both silica and aluminum gangue.
laboratories, and running pelletization experiments with bentonite binder to establish a ... with other lowcost materials as a binder for iron ore pellets. In the previous quarter, initial testwork was conducted in the research laboratories of a ... ~~~ of (# of PRODUCTION OF INORGANIC PELLET BINDERS FROM FLY
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Finesized concentrates are not suitable to be directly used in the ironmaking facilities. Hence, an agglomeration technique should be applied and the most commonly employed method is pelletization. In pelletization, iron ore, water and a binder are balled in a mechanical disc or drum to produce agglomerates. Bentonite is the most widely used binder.
Kemira has developed a series of KemPel™ synthetic organic binders for ironore pelletization. The technical and commercial benefits of this technology were presented in August to the Advanced Sustainable Iron Steel Making Center (ASISC) conference at Michigan Technological University in Houghton, Michigan.
Binder compositions for agglomerating iron ore fines are provided, the compositions comprising: (a) about 30 to about 80% by weight one or more types of anionic or nonionic acrylamidecontaining polymer; (b) about 10 to about 35% by weight one or more types of inorganic or organic monomeric electrolyte; and (c) about 10 to about 35% one or more types of finely ground wood fiber.
size fraction of iron ore fines prepared for pelletization is shown in Table 1. Chemical analysis of iron ore and fluxes including bentonite are shown in Tables 2 and 3, respectively. The used coke fines of – mm size, contains 85% fix C, 13% ash, 1% moisture and 1% VM. The iron ore fines has been mixed with bentonite.
Peridur is a proven organic binder for the agglomeration of iron ore pellets and provides several advantages in pellet production. Our EHEC, MEHEC and CMC cellulose ethers are reliable rheology solutions for industries such as building, construction, paint, food, mining and oilfield.
GIMBOND ® is natural high swelling sodium based bentonite of exceptional purity. It is mined and processed in North West part of India. GIMBOND ® is sodium activated bentonite designed to meet the requirements of pelletization industries. GIMBOND ® is used as green and dry ore binder for all kind of pellets. GIMBOND ® offers superior performance as per ASTM Specifications.
Jun 10, 2013· . bentonite is widely used in the pellet production to improve the strength of ... formation in iron ore pelletization," International Journal of . exhange .
Molasses was used as an alternative binder to the bentonite binder. The change in moisture absorption by pellets prepared with different iron ores and different molasses contents were investigated.
The binding of iron oxide grains by bentonite clay to form pellets is a complex process, with a large number of variables, many of which have never been adequately studied. Current practice for pelletizing iron ore concentrates was developed in 1950's during which bentonite clay was practiced as a binder and since then it has remained
The pig iron nugget process is gaining in importance as an alternative to the traditional blast furnace. Throughout the process, selfreducingfluxing dried greenballs composed of iron ore concentrate, reducingcarburizing agent (coal), flux (limestone) and binder (bentonite) are heattreated.
SIVRIKAYA O., "Use of boron based binders in pelletization of iron ores: Alternative binders to bentonite for iron ore pelletization" LAP LAMBERT Academic Publishing, Co. KG, Saarbrucken, Germany, ISBN13: 978–, p. 260, 2011.
Pelletizing: Bentonite is used as a binding agent in the production of iron ore pellets. Through this process, iron ore fines are converted into spherical pellets, suitable as feed material in blast furnaces for pig iron production, or in the production of direct reduction iron (DRI).
alternative binders to bentonite for iron ore Bentonite is the most widely used binder in iron ore pelletizing industry. The use of bentonite is favorable in terms of physical, mechanical and metallurgical pellet properties, however, because of its acid constituents (SiO2 and Al2O3) it is considered as a chemical impurity especially for concentrate with high acidic content.
Jul 18, 2012· The bonding/strengthening mechanism of colemanite added organic binders in iron ore pelletization Sivrikaya, Osman; Arol, Ali İhsan 00:00:00 The addition of boron compounds into pellet mix is proposed as a potential solution to overcome the insufficient compressive strengths of preheated and fired pellets produced with organic binders. Colemanite was tested as an alternative .
