An organic binder, Funa, has been developed and used in the production of iron ore pellets for direct reduction in China. This paper mainly describes the effects of the binder on balling behaviors of magnetite concentrates as compared to bentonite binder.
Review of organic binders for iron ore concentrate agglomeration Article in Minerals and Metallurgical Processing 31(2):73-94 · May 2014 with 346 Reads How we measure 'reads'
May 01, 2014· Low-grade iron ores are finely ground and processed to recover iron-bearing minerals. However, the iron-rich powder is too fine to be used directly in blast furnaces and most direct reduction furnaces, and must be agglomerated or pelletized into a usable product called "pellets." Bentonite clay has traditionally been used as a binder to make iron ore concentrate pellets, but it is ...
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 binders since they are free in silica.
EFFECTIVENESS OF ORGANIC BINDERS FOR IRON ORE PELLE"nZATION By Larry A. Haas,1 Jeffrey A. Aldinger,2 and Robert K. Zahl3 ABSTRACT The U.S. Bureau of Mines investigated the use of organic binders as substitutes for bentonite in agglomerating iron ore concentrate. Over 30 organic binders were evaluated at several dosage levels
2.1. Iron Ore Concentrates Sample The iron ore concentrates sample is the same one previ-ously introduced,28) and it was obtained from Baima mining plant, China and used without further purification. The main chemical composition of the iron ore concentrates sample used for pelletizing was firstly analyzed and is shown in Table 1.
iron concentrates prior to balling operation is essential to the maximization of adhesion of the binder to ore particles. Roll drum milling was found to be an effective method for the purpose. Investigation also shows that iron ore concentrate containing the organic binder has a lower balling kinetics than bentonite concen-
Low-grade iron ores are finely ground and processed to recover iron-bearing minerals. However, the iron-rich powder is too fine to be used directly in blast furnaces and most direct reduction furnaces, and must be agglomerated or pelletized into a usable product called "pellets." Bentonite clay has traditionally been used as a binder to make iron ore concentrate pellets, but it is ...
A self-fluxing binder composition for use in the pelletization of an ore concentrate, especially iron ore concentrates. The composition comprises from 50 to 98% by weight of one or more carrier having a high surface area, and from 2 to 50% by weight of a water soluble organic enhancer. The carrier is selected from the group consisting of natural and synthetic magnesium and/or calcium bearing ...
Organic binders may be a viable alternative to bentonite clay. This manuscript reviews organic materials that have been used to make iron ore concentrate pellets. Included are discussions on the development of organic binders, common pros and cons to organic binder use, organic binder structure and its effects on agglomeration, and additives to ...
Effects of Binder on the Properties of Iron Ore-Coal. Jan 12, 2010· 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.
Of Limestone Binder In Iron Ore Pellets Praktijk Welzijn. Limestone binder in iron ore pellets.Taconite is a variety of iron formation an iron bearing 15 iron sedimentary rock in which and the powdered iron concentrate is combined with a binder such as bentonite clay and line as a flux the taconite iron ore pellets are hauled by railroad to the ports of silver bay two harbors and the twin.
with the iron ore concentrate. FLOFORM is a free-fl owing powder supplied in sealed 750 kg big-bags. Full details can be found on the MSDS supplied with the product. FLOFORM™ Iron Ore Pelletization FLOFORM™, an alternative Traditionally bentonite is used as binder, but it reintroduces deleterious elements such as silica and alumina.
Alcotac ® organic binders for the iron ore industry. In iron ore pelletization a significant portion of bentonite can be replaced by adding Alcotac ® FE or CS grades at a very low dosage thus significantly reducing the level of unwanted impurities.
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. This contamination leads to: Lower daily production rate of Fe in the pellet-making process; Increased need for upgrading iron ore concentrates reducing concentrator throughput
Pelletizing is a process where iron ore concentrate is mixed with additives and binder and rolled together into balls. The finished iron ore products are known as pellets. LKAB produces two types of pellets: blast furnace pellets and direct reduction pellets.
The use of an organic binder to reduce the bentonite dosage was also studied. The experiment shows that using an organic binder for preparing pellets will decrease the strength of the fired pellets. Taking the measure of milling the mixture damply can improve the strength of the fired pellets so that adding every 0·01% organic binder can ...
The amounts of binder and/or additive (in percent by weight) shown in Table 1 are based on the total weight of the iron ore concentrate. The iron ore concentrate employed in the Examples of Table 1 was obtained from Gulf Industrial Investment Company (GIIC), Bahrain. To this iron ore concentrate limestone and anthracite were added.
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.
Review of organic binders for iron ore concentrate agglomeration Halt, J.A. Kawatra, S.K. View Abstract 95 Iron ore flotation with environmentally friendly reagents , K.L. Larsen, E. View Abstract 103 Modern air pollution control for iron ore induration ...
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 ...
Pelletization is an agglomeration process of iron ore concentrates with a granulometry lower than 150 m and low concentration of impurities [10, 11]. This iron ore is mixed with water, bentonite (or other organic binders less expensive and contaminant [12]), and lime and treated
Jan 05, 2004· The interfacial interactions of Funa binder with iron concentrates will be investigated in this paper as compared to bentonite binder. It is noted that there are few reports on the interfacial interactions between binders and iron ore particles although a lot of organic and inorganic binders have been proposed. J.
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, however, because of .
