Iron Ore Pelletization: Part III. Organic Binders
ABSTRACT This part reviews the goals of introducing organic binders into iron ore pelletization. Organic binders present a relatively small number of unique binding options but provide an extraordinary amount of flexibility in how to apply them. The key factors that lead into an effective organic binder are good dispersion into the iron ore, the ability to maintain the dispersion of the …
(PDF) BASF NOVEL IRON ORE BINDER TECHNOLOGY: STUDY OF BENTONITE
Hence, the suggested combined binders can be used as binder in place of bentonite in iron ore pelletizing without compromising the pellet chemistry. View full-text Article
Iron Ore Pelletization: Part II. Inorganic Binders
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 ...
Effects of bentonite fiber formation in iron ore pelletization
In the production of iron ore concentrate pellets, binders are required to improve pellet green strength.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 significant cost item in iron ore pelletization, and also contributes undesirable amounts of silica to the finished …
Binding Mechanism in Green Iron Ore Pellets with an Organic Binder
Zhang et al. [22] compared the adsorption characteristics of humic acid on montmorillonite, guided the preparation of a novel iron ore pellet composite binder, and determined that the composite ...
Microstructure of Bentonite in Iron Ore Green Pellets
Bentonite, as the main binder for pellets, cannot undergo thermal decomposition during the smelting process and mostly remains in the pellets, leading to a decrease in the iron grade of the ...
A review of binders in iron ore pelletization
The majority of iron ores must be ground to a fine particle size to allow the iron oxides they contain to be concentrated, and the concentrate must then be agglomerated back into large enough particles that they can be processed in blast furnaces. The most common agglomeration technique is pelletization, which requires the use of binders to hold the iron …
Bentonite for Iron Ore Pelletization, absorbent, expandable
This study was started to find alternative binders to bentonite and to recover the low preheated and fired pellet mechanical strengths of organic binders-bonded pellets. Bentonite is …
Reducing bentonite usage in iron ore pelletization through a novel polymer-type binder: Impact on pellet induration and …
National Standard PG natural sodium bentonite is an excellent low-cost option for use as an inorganic binder in production of iron ore pellets. The high water absorbtion and swelling …
Pelletizing of Iron Ores by Partial or Full Substitution of …
Results of a study conducted to determine the properties of iron ore pellets made from Mount Wright and Carol Lake ore concentrate fines with partial and full substitution of bentonite by …
Effectiveness of Organic Binders for Iron Ore …
the iron ore industry, methods need to be developed for producing domestic iron ore pellets that are economical and have superior metallurgical properties that will result in coke reduction during blast furnace smelting. Since iron ore concentrates consist of finely divided particles, they must be pelletized (with a binder) for use as
Microstructure of Bentonite in Iron Ore Green Pellets
Sodium-activated calcium bentonite is used as a binder in iron ore pellets and is known to increase strength of both wet and dry iron ore green pellets. In this article, the microstructure of bentonite in magnetite pellets is revealed for the first time using scanning electron microscopy.
Microstructure of Bentonite in Iron Ore Green Pellets
The microstructure of bentonite in magnetite pellets is revealed for the first time using scanning electron microscopy and it is shown that clay tactoids were very well dispersed and formed a voluminous network occupying the space available between mineral particles. Abstract Sodium-activated calcium bentonite is used as a binder in iron ore pellets and is …
Iron Ore Pellets
Iron ore pellets, like concentrates, are raw materials for the manufacture of iron, which is pulverized and ground into pellets ranging from 0 to 100 microns for supply to industry as pellet feed. ... and is the best binder for pellet particles. In bentonite minerals, an octahedral layer of aluminum oxide is sandwiched between two tetrahedral ...
Reduction Kinetics of iron ore pellets and the effect of Binders
Reduction of Iron Ore Pellets with a particular percentage of binders i.e. 2% of Dextrine and 2% of Bentonite was carried out for the temperature range 900 to 1050°C. In reduction kinetic study the most satisfactory model was to taken, the slope of ... download Download free PDF View PDF ... furnace flue gas" –, Thermochimica Acta 432 ...
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. Therefore, alternative binders to bentonite have been tested. Organic binders are the most studied binders and they yield …
Improving the Properties of Magnetite Green Pellets with a …
2.1.2. Binders. There were three types of binders (bentonite, MHA and HAMB) applied to the preparation of green pellets. Table 3 shows the main chemical compositions of the bentonite, which was also supplied by the same pelleting plant. The MHA binder was obtained from lignite, whose main organic elements and proximate analysis was reported in the previous article [].
A novel polymer-type binder to decrease bentonite dosage …
In this study, a novel polymer-type binder (PTB) was introduced to minimize bentonite consumption during green pellet preparation. By regulating the ratio, the addition of …
Iron Ore Pelletizing Process: An Overview
Evolution of binder for iron ore pelletizing Binders are used in the pelletizing of iron ore aiming to improve the performance of the process in the following aspects [1, 4, 11, 16, 17]: • promoting and facilitating the balling; • increasing the green and dry strength of the pellets; • preventing the collapse of pellets in the initial ...
Review of Organic Binders for Iron Ore Agglomeration
Iron ore pellets are one type of iron-rich, intermediate product used during primary iron and steel making. During pellet production, fine-grained iron containing minerals are liberated from low- ... bonding at this stage depends on which binder is used. Bentonite is a low melting temperature silicate (Grim, 1978). The liquid phase (due to ...
Bentonite binder effective strength (BESt) test for …
Key words: Bentonite binder, Pelletization, Strength test, Taconite processing Introduction Bentonite clay is used to bond iron ore concentrates into pellets. The clay is a significant cost item, with individual plants spending US$3 to 5 million for bentonite annually. These bentonites are currently evaluated by the amount of
A novel polymer-type binder to decrease bentonite dosage during iron
The binder is an essential auxiliary material in the production of iron ore pellets as it controls the properties of both green and hardened pellets [6].Currently, bentonite serves as the predominant binder in iron ore pellet production, typically in dosages ranging from 1.5% to 3.0% [4, 7].However, excessive use of bentonite can seriously affect pellet quality due to its main …
Reducing bentonite usage in iron ore pelletization through …
DOI: 10.1016/j.jmrt.2024.05.175 Corpus ID: 269999242; Reducing bentonite usage in iron ore pelletization through a novel polymer-type binder: Impact on pellet induration and metallurgical properties
(PDF) Investigating the effectiveness of organic binders as …
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.
A novel polymer-type binder to decrease bentonite dosage during iron
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 ...
(PDF) Effect of molasses binder on the physical and …
High porosity, in turn, decreased DPCS. 3.4.2. Effect of bentonite binder on the quality of dry pellets The DPCS values of different iron ore pellets prepared without binders are shown in Fig. 10. Iron ore pellets without binder addition had low DPCS values of 15.39–21.51 N/pellet. These values do not meet industrial standards.
Binding Mechanism in Green Iron Ore Pellets with an Organic Binder
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 organic binders, those based on cellulose and those based on polyacrylamide structures. The purpose of this investigation was to explore how an organic binder based on …
ALTERNATIVE BINDERS TO BENTONITE FOR IRON …
The feasibility of producing direct reduced iron from cold-bonded, self-reducing composite pellets, constituted from beneficiated iron ore slime, coke, and different binders (dextrin,...
A review of binders in iron ore pelletization
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 situations.
Binding mechanisms in wet iron ore green pellets with a bentonite binder
The iron ore pellet produced with Kimberlite-based binder have exhibited better physical and metallurgical characteristics than pellets produced with conventional binders (Bentonite). View Show ...