types of binders used in making iron ore pellets
Use of Boron Compounds as Binders in Iron Ore
2016-6-11 · 3. BINDERS IN IRON ORE PELLETIZING Numerous types of materials have been considered for use as binders in iron ore pelletizing, with an objective of
Advances in Alternative Binders for Iron Ore Pellets ...
Advances in Alternative Binders for Iron Ore Pellets. McDonald, Jacob Eugene Dale. Abstract. The replacement of bentonite as the standard iron ore binder is
A review of binders in iron ore pelletization | Request PDF
2003-1-1 · The main drawback of the binders commonly used in iron ore based composite pellets is the presence of impurities like silica and alumina that are undesirable
ALTERNATIVE BINDERS TO BENTONITE FOR IRON ORE
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
Review of organic binders for iron ore concentrate ...
2014-5-1 · 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
[PDF] Review of Organic Binders for Iron Ore
Introduction Iron ore pellets are one type of iron-rich, intermediate product used during primary iron and steel making. During pellet production
Production of Iron-Ore Pellets with an Organic Binder
Feature of iron-ore cold-bonded composite pellets is, raw materials pellletizing with a cold-hardening binder. Bentonite is the most widely used binder in iron
(PDF) ALTERNATIVE BINDERS TO BENTONITE FOR IRON
Pellets of these wastes are prepared with three types of binders as molasses, dextrin and bentonite. ... After that, these macro pellets used for sintering
Functions and molecular structure of organic binders for ...
2003-8-29 · Organic binders of iron ore pellets were widely investigated in past decades because they do not contaminate the product. This paper mainly involves the
Binding mechanisms in wet iron ore green pellets with a ...
2006-11-13 · Iron ore green pellets show both plastic and elastic behaviour and the difference in significance between these two mechanisms should be recognised. Plastic
ALTERNATIVE BINDERS TO BENTONITE FOR IRON ORE
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 its acid constituents (SiO 2 and Al 2 O
BINDER COMPOSITIONS AND PROCESSES OF PREPARING
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 acrylamide-containing 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.
Iron ore–coal composite pellets/briquettes as new feed ...
2017-3-3 · Different types of binders are used by research workers for iron ore-coal composite pellet making. Bentonite, cement, sponge iron powder, lime, hydrated lime, and silica have been employed as inorganic binders whereas starch based binders; dextrin, molasses, dextrose and oil-slush are some of the organic binders.
Lotta Casey ORGANIC BINDERS FOR IRON ORE
2017-4-28 · 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 pellets which however often lack in compressive strengths after sintering.
Effect of different binders on Mechanical properties of ...
2018-1-1 · Pelletizing is the widely used agglomeration method for the production of iron ore pellets. The pelletizing method is believed to produce pellets that possess the chemical, physical and the metallurgical characteristics required for the feedstock of blast furnace [4]. Pellets are made differently from briquettes, in pelletizing the finely ...
"Advances in Alternative Binders for Iron Ore Pellets" by ...
The replacement of bentonite as the standard iron ore binder is an important factor in the future of iron processing. Bentonite adds unwanted silica to the final concentrated iron ore product. Excess silica from bentonite addition has been calculated to consume approximately 2.4 MJ of additional energy during the production of one metric ton of pig iron.
(PDF) A review of binders in iron ore pelletization ...
This was true for both Class C fly-ash and Class F fly-ash. Benefits of using fly-ash f A REVIEW OF BINDERS IN IRON ORE PELLETIZATION 77 Downloaded by [Van Pelt and Opie Library] at 09:48 01 July 2014 Figure 19. Effect of calcium hydroxide addition on the binding performance of
WO1999024158A1 - Binder formulation used in forming ...
A binder formulation comprised of colloidal silica and a polymeric binder, preferably polyvinyl alcohol. A mineral pellet and related low temperature hardening process for making the same. The mineral pellet has sufficient strength to be transported and has sufficient strength for use in iron-making processes.
Drying of Iron Ore Pellets - Analysis with CFD
2016-9-30 · The average diameter for iron ore pellets is about 12 mm and 99 % of all pellets have a diameter in the range 6.3 -16 mm and 70 % of these are, in their turn, within the interval 10-12.5 mm. Pellets can be indurated in shaft furnaces, in grate-kilns and on traveling grates. The principle of sintering pellets is almost the same in grate-kilns and
METHOD OF PRODUCING IRON-ORE PELLETS -
We claim 1. In a method of producing iron wherein green pellets of an iron-oxide ore are directly reduced with a reducing gas without prior firing of the pellets, the improvement which comprises the step of increasing the compressive strength of the pellets during reduction by incorporating in the pellets during the formation thereof an organic low-temperature carbohydrate binder selected from ...
ALTERNATIVE BINDERS TO BENTONITE FOR IRON ORE
2019-6-2 · 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.
ALTERNATIVE BINDERS TO BENTONITE FOR IRON ORE
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 its acid constituents (SiO 2 and Al 2 O
Effectiveness of Organic Binders for Iron Ore Pelletization
pellets more competitively, using organic binders for agglomerating iron ore. The goals of this research were (1) to determine the physical and metallurgical pellet properties of pellets made with different types and dosages of organic binders and (2) to relate these pellet properties to the binder properties.
"Advances in Alternative Binders for Iron Ore Pellets" by ...
The replacement of bentonite as the standard iron ore binder is an important factor in the future of iron processing. Bentonite adds unwanted silica to the final concentrated iron ore product. Excess silica from bentonite addition has been calculated to consume approximately 2.4 MJ of additional energy during the production of one metric ton of pig iron.
Effect of different binders on Mechanical properties of ...
2018-1-1 · Pelletizing is the widely used agglomeration method for the production of iron ore pellets. The pelletizing method is believed to produce pellets that possess the chemical, physical and the metallurgical characteristics required for the feedstock of blast furnace [4]. Pellets are made differently from briquettes, in pelletizing the finely ...
WO1999024158A1 - Binder formulation used in forming ...
A binder formulation comprised of colloidal silica and a polymeric binder, preferably polyvinyl alcohol. A mineral pellet and related low temperature hardening process for making the same. The mineral pellet has sufficient strength to be transported and has sufficient strength for use in iron-making processes.
Alcotac – synergistic organic binders
2020-3-25 · Binders are used to make the moist ore plastic so that seeds are nucleated and pellets grow at a controlled rate. The binder holds the green pellet together until strong bonds are formed in the induration process where the agglomerates sinter together at temperatures of around 1300°C. Bentonite was the first binder used and is still employed today
Briquetting of Iron Bearing Materials - nitrkl.ac
2016-5-12 · To get briquettes of desired quality, we have to use binders. These binders hold the particles of the briquette together. There are various types of binders such as Portland cement, asphalt, pitch, sodium silicate, clay, plastics, sulphur liquor, lime, bentonite, tar, molasses, etc. 1.3 Hot Briquetted Iron:-
Drying of Iron Ore Pellets - Analysis with CFD
2016-9-30 · The average diameter for iron ore pellets is about 12 mm and 99 % of all pellets have a diameter in the range 6.3 -16 mm and 70 % of these are, in their turn, within the interval 10-12.5 mm. Pellets can be indurated in shaft furnaces, in grate-kilns and on traveling grates. The principle of sintering pellets is almost the same in grate-kilns and
METHOD OF PRODUCING IRON-ORE PELLETS -
We claim 1. In a method of producing iron wherein green pellets of an iron-oxide ore are directly reduced with a reducing gas without prior firing of the pellets, the improvement which comprises the step of increasing the compressive strength of the pellets during reduction by incorporating in the pellets during the formation thereof an organic low-temperature carbohydrate binder selected from ...