Bentonite for iron-ore pelletizing While interacting with the water, bentonite clay expands and becomes sticky. This property allows to effectively use it as a binder for the production of pellets from iron ore concentrate (wet, crushed iron ore that has been beneficiated).
In pelletizing, iron ore, water and a binder are balled in a mechanical disc or drum to produce wet pellets. 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,
Bentonite, an inorganic binder, has been the main binder used in the iron ore pelletizing process since the beginning of pellet production in the 1950s. Bentonite promotes the formation of ceramic bridges between particles, which can minimize the …
The ratio in the output from the three main pelletizing technologies changes depending on practical circumstances, such as iron ore reserves, iron ore types, market demand, required investment, etc. The ratio for GK pellets has increased to 77.0% in 2018 from 7.0% in 2000, while the ratio for shaft furnace pellets has dropped to 14.9% in 2018 ...
Organic binders generally do not contain high quantities of silica and alumina and are burnt during pre-heating, contrary to bentonite clays commonly used in pelletizing iron ore for blast furnaces. Due to the need to process increasing volumes of low grade iron, interest in organic binders has increased lately. Organic binders tend to produce good quality wet …
ABSTRACT. The behavior of iron ore pellet binders is complex. Any pellet binder is subject to a handful of practical requirements: that it be readily dispersed through a pellet, that it effectively controls the movement of water within the pellet, and that it contributes to the inter-particle bonding within the pellet.
The binder uses bentonite or organic binders (such as polyacrylamide). It makes the iron particles sticky, increases the strength of the pellets, and prevents breakage during pelletization. ... Ftmmachinery has more than 40 years of experience in setting up iron ore pelletizing plants all over the world and has carried out batch tests such as ...
While interacting with the water, bentonite clay expands and becomes sticky. This property allows to effectively use it as a binder for the production of pellets from iron ore concentrate (wet, crushed iron ore that has been beneficiated). Pellets are used in blast-furnace redistribution and electrometallurgical production.
Iron ore pelletizing is a prominent application field for bentonite that constitutes approximately 15 to 20 pct of global bentonite consumption. Bentonite serves as an …
As with iron ore pelletizing, bentonite also serves as a binder in the foundry sands industry, playing a critical role in producing moulds that will yield cast products of the desired quality. As a binder, bentonite lends excellent green and dry compression strength, hot strength, flowability, permeability, and durability to the sand used to ...
It was found that the organic binder could fully replace bentonite to produce high-iron-grade and low-silica pellets for the DR process. However, the following issues need to be considered when evaluating and selecting organic binders for pelletizing applications: ... more attention is being paid to the use of hydrated lime in iron ore …
This study illustrates the feasibility of pelletizing magnetite iron ore concentrate using four organic binders: KemPel, Alcotac CS, Alcotac FE16, and CMC, in comparison to bentonite as a reference.
A brief introduction to recent developments in iron ore pelletizing is provided in this chapter, including the world output of fired pellets, pellet production processes, preparation of pellet feed, inorganic and organic binders, and new additives. Throughout the chapter, the authors have used a difficult pellet feed, that is, a Brazilian specular …
A combination of 0.4% Ca-LS with 5% LDS addition can prevent strength deterioration at 300–350°C during drying and gives a good-quality pellet in terms of …
2 1 - INTRODUCTION Pelletizing plants have been producing pellets for blast furnaces (BF) and direct reduction (DR), since the 1950's. (1) At the beginning, in USA, low grade taconite was used ...
In particular, in the iron ore pelletizing industry, the intricate nature of the bentonite indicator system presents a significant challenge for quality assessment and …
Keywords: iron ore, pelletizing, binder, bentonite, alternative binders. View full-text. Discover the world's research. Join ResearchGate to find the people and research you need to help your work.
Organic binders have been used as an attractive alternative to bentonite in iron ore pelletizing process, mainly because it burns without leaving any residue in the final pellet. There are two main types of organic binders, those based on cellulose compounds and other based on polyacrylamide polymers. Table 3 shows some patents from chemical ...
The pelletization process is the primary consumer of binders in the iron ore industry. The selection of an appropriate binder type and dosage is of critical importance …
Sodium bentonite clay for foundry, foundries, and iron ore pelletizing (IOP) shipped in bulk for coal blending or direct use.
SIVRIKAYA o. and AROL A.I., "Alternative binders to bentonite for iron ore pelletizing : PART I: Effects on physical and mechanical properties", VIII Meeting of the Southern Hemisphere on Mineral Technology, Goiânia - GO, 20-24 Oct. 2013. TIMUÇIN M., GEVECI A., SEVINÇ N., TOPKAYA Y. and ERIÇ H., "The use of colemanite in steel ...
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. Therefore, alternative binders to bentonite have been tested. Organic binders are the most studied …
Bentonite is the most widely used binder in iron ore pelletizing. Bentonite content has a significant impact on the chemical properties, drop number, and compressive strength of green pellets. Green pellets are subsequently indurated to produce pellets with desirable physical, chemical, and morphological properties for use in blast furnaces and ...
To improve the ballability of iron concentrates and enhance the performance of green balls and dry pellets in the production of iron ore pelletizing, the bentonite was usually used as a binder in the pelletizing process [].Bentonite, a very important nonmetallic mineral, is mainly composed of montmorillonite [2, 3], which is an aqueous …
The transformation from traditional iron- and steelmaking technologies to green H2-based new technologies will require an improvement in the quality and purity of iron ore burden materials. Iron ore pellets are essential inputs for producing direct reduced iron (DRI), but the conventional binders, used in iron ore pelletizing, introduce gangue …
PELLETIZING OF IRON ORE Due to its water absorption capacity and colloidal property, bentonite is used as a binding additive to convert iron ore fines into 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 .
KEYWORDS: iron ore pelletizing, bentonite & organic binder, boron compounds, colemanite, physical and mechanical properties.. HOLOS, Ano 30, Vol. 3 - Edição Especial - XXV ENTMME / VII MSHNT 94 SIVRIKAYA & AROL (2014) 1 INTRODUCTION The main raw material for iron-steel industry is natural iron oxide ores. Natural iron oxide ores …
Bentonite is the most widely used binder in iron ore pelletizing. The use of bentonite is favorable in terms of physical, mechanical and metallurgical pellet qualities, however, because of its acid constituents (SiO 2 and Al 2 O 3) it is considered as an chemical impurity especially for concentrate with high SiO 2 content.
Iron ores. 2. Pelletizing (Ore-dressing). 3. Bentonite. 4. Binders (Materials). I. Aldinger, Jeffrey A. II. Zahl, Robert K. III. Title. IV. Series: Report of investigations (United States. ... The U.S. Bureau of Mines investigated the use of organic binders as substitutes for bentonite in agglomerating iron ore concentrate. Over 30 organic ...
Explore the iron and steel industry's use of iron ore, focusing on the pelletizing process of low-grade ores. Learn about the various sub-processes, including crushing, grinding, separation, and agglomeration. ... After the filtering, binder (bentonite or organic binder) is added. 6) Green pellets are made by the use of balling drums. When ...
FOUNDRY & IRON ORE PELLETIZING. ABI Untreated Gel is a naturally occurring 200 mesh sodium bentonite with a low viscosity build. It is used in iron ore pelletizing, foundry and industrial applications. TYPE Powder Bentonite MESH 200 Mesh KEY CHARACTERISTIC _ PRESENTATION 100 lb. Paper Bag
Bentonite is the most common binder used in iron ore pelletisation owing to its good bonding properties in green and dry pellets at both ambient and elevated temperatures.
Bentonite is the most widely used binder in iron ore pelletizing. The use of bentonite is favorable in terms of physical, mechanical and metallurgical pellet qualities, however, because of its acid constituents (SiO 2 and Al 2 O 3) it is considered as an chemical impurity especially for concentrate with high SiO 2 content.
Our iron ore pelletizing systems combine the best features of both technologies to provide the most modern plant and to produce pellets at the lowest cost and highest quality. ... The iron is usually ground to a very fine level and mixed with limestone or dolomite as a fluxing agent and bentonite or organic binders as a binding agent. If the ...
PDF | Iron Ore, Iron Ore Pellets, Direct Reduced Iron )DRI( Pellets, Iron Ore Pellets Market, Pelletizing Process, Sintering, Binder, Induration... | Find, read and cite all the research you need ...
ment. In particular, in the iron ore pelletizing industry, the intricate nature of the bentonite indicator system presents a significant challenge for quality assessment and optimization of bentonite as a pellet binder (BPB).[4] Iron ore pelletizing is a prominent application field for bentonite that constitutes approximately 15 to 20 pct of