Iron ore-coal composite pellets were prepared by cold bonding. Various binders such as lime, Ca (OH) 2, slaked lime, dextrose, molasses, and sodium polyacrylate (SPA), …
iron ore with particle size 25 ～48 µm was appropriate for the reduction of iron ore-coal composite pellets in the experimental conditions, and particle size 75 ～106 µ m and 150 ～180 µ m were insufficient to complete the reduction.
In overall, pellet porosity increases while decreasing its strength [16]. The cracking issue of iron ore pellets with high LOI content can be controlled by changing the heating rate of thermal ...
Humic substance-based binder (HB) has been found to be an effective substitution for bentonite in the production of iron ore pellets. In this study, it was found that the preheating time needed to be prolonged during the pelletization processing which is a remarkable feature of pellets with HB instead of bentonite. As far as the oxidation behaviors were concerned, a …
Humic substance-based binder (HB) has been found to be an effective substitution for bentonite in the production of iron ore pellets. In this study, it was found that the preheating time needed to ...
Bentonite causes a severe decrease in total iron grades (TFe) of pellets, requiring effective organic binders urgently to reduce its dosage in pelletizing. However, the …
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. Iron ore properties exerted the major effect on pellet behavior and final pellet quality. The absorbed moisture content of pellets prepared without binder, bentonite-added …
Abouzeid A, Seddik A. Effect of Iron Ore P roperties on ... Li, H.-x., W ang, D.-z., 2003 a. Functions and molecular ... Organic binders of iron ore pellets were widely investigated in past ...
Due to the reducing ability and bonding effect, a humic substance-based binder has been added into iron ore pellets, both as a reductant and a binder. However, humic substancebased binders were not commonly used in pelletization since some
With the intensified depletion of high-grade iron ores, the increased aluminum content in iron ore concentrates has become unavoidable, which is detrimental to the pelletization process. Therefore, the effect mechanism of aluminum on pellet quality must be identified. In this study, the influence of aluminum occurrence and content on the induration of hematite (H) and magnetite …
This study compares the performance of two different kinds of agglomeration binders, inorganic binder (bentonite) and an organic binder of commercial use on the iron ore pellet...
Organic binders are often desired when making low-silica iron ore pellets. Corn and wheat are grown in large quantities near certain iron ore pelletizing facilities and their starches are easily ...
In this work, using high-silicon iron ore concentrates as raw material, the effect of high-silicon iron ore concentrates with different particle size on the oxidation behavior of pellets was studied.
Effect of HA Binder on the Phase Structure of Sintered Pellets From the pelletizing results discussed above, qualified pellets can be prepared by VTM with 1.5% bentonite, 0.75% HA, or 0.75% HA ...
Abstract. 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. The aim of the present work is to identify the CSL (sodium ligninsulfonate added CaCO 3) as an alternative binder in iron ore pelletization. FTIR
Organic binders are the most studied binders and they yield pellets with good wet strength; they fail in terms of preheated and fired pellet strengths. This study was conducted to...
The self-binding properties of the ore ensured the complete elimination of an external binder due to the presence of kaolinite. LOI of the ore indeed affected the quality of indurated pellets by cracking, which might be the reason for the degradation of pellet quality. ... Effect of iron ore-coal pellets during reduction with hydrogen and ...
A. B Kotha et.al. investigated the effect of molasses binder on the physical and mechanical properties of iron ore pellets, the change in moisture adsorption, wet and dried pellet compressive strength without binder or bentonite -added pellet [5].Organic binders based on cellulose improved the compressive strength of wet and dry pellets, the interaction between …
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 …
DOI: 10.1007/s12613-020-2055-7 Corpus ID: 216449356; Effect of organic binders on the activation and properties of indurated magnetite pellets @article{Wang2021EffectOO, title={Effect of organic binders on the activation and properties of indurated magnetite pellets}, author={Cui Wang and Chen-yang Xu and Zheng-jian Liu and Yao-zu Wang and Rong-rong Wang and Li …
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
The most widely used binder for iron ore is ben tonite. This thixotropic clay-mineral gives the pellets the desired properties, has a low price and does not interfere with their metallurgical …
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 …
Mechanisms in wet iron ore green pellets with a bentonite binder" - Powder Technology 169 ((2006) 147-158 2. Coetsee T., Pistorius P.C, Villiers E.E D. "Rate determining steps for reduction in magnetite-coal pellets" –, Minerals Engineering 15 (2002) 919-929 3. Ripke S.J., Kawatra S. K. "Can fly-ash extend Bentonite binder for iron ore
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 …
pellet mechanical strengths of organic binders-bonded pellets. Bentonite is considered as a chemical impurity for pellet chemistry due to acid constituents (SiO2 and Al2O3). Especially addition of silica-alumina bearing binders is detrimental for iron ore concentrate with high acidic content. Organic binders are the most studied
Iron ore pellets require a binder to help establish bonds between iron ore particles and to maintain these bonds after the moisture in the pellet has evaporated (Eisele and Kawatra, 2003). ... Effects of binder on the properties of iron ore-coal composite pellets. Mineral Processing and Extractive Metallurgy Review, vol. 31, no. 2. pp. 73-85 ...
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 [].
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 forma-
Large amounts of fines and superfines are generated in Indian iron ore and coal mines due to mechanized mining and mineral dressing operations. Utilization of these fines for extracting metal is of vital concern for resource utilization and pollution control. For agglomeration of these fines, a suitable binder is required. Iron ore-coal composite pellets were prepared by …