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Low Melting Slag Binders For Iron Ore Pellets

CN101294243A

The invention relates to a granulating method of iron ore concentrate sintering mixture and belongs to the metallurgical field The method solves the technical problem that the granulating method of the iron ore concentrate sintering mixture is provided wherein the granulating method can increase the quality of sintering minerals The Get price

Steel plant dust binder

It is suitable for Steel plant dust、Iron sludge and ore powder to be processed into pellets as smelting iron and steel raw materials steelmaking coolant or slagging agent high alkalinity low melting point fast forming speed stable ingredient slag forming effect is good the metallurgical properties can meet the requirement of smelting Get price

LKABs Experimental Blast Furnace for Evaluation of Iron

aim was to create a highly reducible pellet with a high iron content without compromising the high reduction strength or well defined melting properties of the olivine pellet The idea was to decrease the need of reductants by making the pellet more reducible and also to allow for decreased slag volumes by lowering the silica content to a Get price

Effect of Fluxing Agents on the Quality and Microstructure

20 Srinivas Dwarapudi et al Effect of Fluxing Agents on the Quality and Microstructure of Hematite Pellets Table 4 Ingredients of green pellets with varying amount of pyroxenite Pellet P1 Pellet P2 Pellet P3 Pellet P4 Pellet P5 Pellet P6 Iron ore wt % 96 7 95 1 Get price

Effects of Basicity and FeO Content on the Softening and

higher content of a binder like Portland cement could be used to maintain the compressive strength of pellets after heating The composition of slag aﬀects the softening and melting temperatures When the deformation temperature of slag is low the compressive strength of DRI is increased due to slag Get price

Iron Ore Pellets North America BF and DR Grade Supply

Iron Ore Pellets North America BF and DR Grade Supply and Quality Dr Joseph J Poveromo Raw Materials Ironmaking Global Consulting Bethlehem PA joe poveromorawmaterialsiron 3rd COREM Symposium on Iron Ore Pelletizing Sept 29 – Oct 2 2013 Quebec City are lower slag volumes •reduction of pellet SiO2 from 4 30 to Get price

ALTERNATIVE BINDERS TO BENTONITE FOR IRON ORE

binders through slag bonding mechanism Furthermore lowering the firing temperature thanks to low-melting boron compounds will be cost-effective for firing part of the pelletizing plants KEYWORDS iron ore pelletizing bentonite organic binder boron compounds colemanite physical Get price

IEA ETSAP

basic material for iron and steel production is iron ore or ferrous scrap Iron ores are classified based on shape and volume Iron fines have a majority of particles with a diameter of 4 75 mm iron lump ore has a majority of particles with a diameter of 4 75 mm iron pellets are a fine-grained concentrate rolled into balls (with a binder) Get price

Iron Ore Price Trends DR

iron ore types? • DR-process does not form a liquid slag in the same way BF-process does • Impurities are concentrated – rather than removed • Therefore only high-purity low gangue iron ore can be used Direct-Reduction Pricing The formation of liquid slag in the BF process removes impurities allowing lower-grade ore to be Get price

The Making of Iron Steel

THE MAKING OF IRON AND STEEL 2 major steelmaking method involves the melting and refining of steel scrap in an Electric Arc Furnace Pig iron and refined iron ore pellets (briquetted iron) can also be used and because his t method is economic at lower volumes these operations are called mini mills Get price

RESEARCH PAPER Replacement of bentonite in hematite ore

Replacement of bentonite in hematite ore pelletisation using a combination of sodium lignosulphonate and copper smelting slag A Ammasi and J Pal* 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 However due to Get price

Author Index p 875 Burden Distribution Computer

Slag Behavior in Iron Ore Pellets During Reduction Under Load p 573 Blast Furnace Burden Softening and Melting Phenomena - Melting Onset in Acid and Basic Fluxed Pellets p 585 Kinetics and Mechanism of Reduction of Iron Ore Pellets Under Load p 597 Fly Ash Binder for Pelletizing Steel Mill Desulfurization Slag p 623 Get price

Utilization of Lime Fines as an Effective Binder as well

Abstract A laboratory study was carried out to characterize the physical chemical and mechanical properties of lime fluxed (varying basicity 0-2) hematite iron ore pellets Lime was used as additive as well as fluxing agent for making iron ore pellets The effect of additives on different properties of pellets Get price

Review of Organic Binders for Iron Ore Agglomeration

Review of Organic Binders for Iron Ore Agglomeration J A Halt S Komar Kawatra Department of Chemical Engineering Michigan Technological University Houghton MI 49931 skkawatrmtu edu Date Last Edited 5/22/2013 Introduction Iron ore pellets are one type of iron-rich intermediate product used during primary iron and steel making Get price

Behavior of fluxed lime iron oxide pellets

When the pellet was added into hot metal bath (carbon-containing molten iron) it was decomposed melted and transformed to produce low melting oxidizing slag because it is a combination of main CaO and Fe 2 O 3 This slag is suitable for facilitating P and C removal in refining Get price

Sintering of Iron Ore

IMPACT YOUR PROFITABILITY Read case studies Read white papers Profitability Solutions Using sinter in place of lump ore and pellets helps to reduce blast furnace fuel rate and CO2 emissions Adding fluxed sinter feed to the blast furnace increases softening and melting Get price

ENHANCED BINDERS FOR IRON ORE PELLETING AND

23-5-2019ENHANCED BINDERS FOR IRON ORE PELLETING AND CEMENT ADHESIVE MATERIALS wherein the iron ore pellets have a dry compressive strength that is comparable to or greater than iron ore pellets manufactured with conventional binder the intrinsic viscosity of levan in water is vanishingly low as compared to other polysaccharides Get price

Slag

Slag from steel mills in ferrous smelting on the other hand is designed to minimize iron loss and so mainly contains oxides of calcium silicon magnesium and aluminium Any sandy component or quartz component of the original ore automatically carries through the smelting process as silicon dioxide Get price

Pig iron

Pig iron is an intermediate product of the iron industry also known as crude iron which is obtained by smelting iron ore in a blast furnace Pig iron has a very high carbon content typically 3 8–4 7% along with silica and other constituents of dross which makes it very brittle and not useful directly as a material except for limited Get price

Model studies on the effects of composition differences of

produces iron ore pellets for DR The pellets produced contain low amounts of silicon and aluminum which results in smaller slag amounts when melted in an electric arc furnace (EAF) In order to improve the properties during DR and melting dolomite is added to the pellets Get price

Organic Binder

Organic Binder An organic binder for iron ore pelletisation Sefogel is an organic binders for the iron ore pelletisation it is free flowing fine powder and an effective replacement ( full or partial ) for bentonite which contains lots of silica Sefogel is also used as universal dust suppressants Get price

Steelmaking based on inductive melting

As illustrated in Fig 4 the melting stock used to produce electrical steel partly consists of so-called direct reduced iron (DRI) This is produced in the direct reduction process in which prepared iron ore pellets are reduced from oxygen in their solid state by a heat and reduction gas consisting of carbon monoxide and hydrogen or even by Get price

cold strength of iron ore pellets

Pelletizing Process Pellets are made from iron ore that is finer than that used for sintered ore The ore fine is formed into spheroids called green balls approximately 12mm in diameter The green balls are fired into product pellets The pellets are used as the raw Cold compression strength Get price

Development of Fluxed Iron Oxide Pellets for Steel Making

with iron oxide may form a low melting oxidizing slag and makes the refining process faster In this context NML has developed a novel process of making fluxed pellet utilizing waste materials from steel plant without using any binder and without firing The developed pellet Get price

Pelletization of slag from steel desulfurization

Request PDF on ResearchGate | Pelletization of slag from steel desulfurization | A typical steelmaking facility produced 50 000 tons per year of slag in their hot-metal desulfurization process This slag had a sufficiently high iron content that it could be beneficiated and recycled in a blast furnace provided that the slag could be Get price

Iron

Iron - Manufacturing process related to the specified manufacture(s) [mainly silica and alumina] into a low melting point slag which also dissolves the coke ash and removes sulphur For example CaCO3 → CaO + CO2 The iron ore feed is either fines in fluid beds or pellets and lump in the other Get price

Peridur CMC Cellulose ethers – Nouryon

Peridur is a proven organic binder for the agglomeration of iron ore pellets and provides several advantages in pellet production Our EHEC MEHEC and CMC cellulose ethers are reliable rheology solutions for industries such as building construction paint food mining and oilfield Get price

Mineral Reactions and Slag Formation During Reduction of

Iron ore pellets are commonly used in the modern blast furnace process The pellets are made by adding binder to finely ground iron ore and pelletised in a balling drum or disc pelletiser These so called green pellets are fired in an relatively low melting slag phase of fayalitic composition (Lu et al Get price

Replacement of bentonite in hematite ore pelletisation

Investigation of reduction of magnetite based carbon

pellets The slag phase which is composed of silicate and calcium oxides with a high melting temperature keeps the form in the solid state sintered as it does not reach high temperature during the process Since the melting of the slag phase is not needed the iron nugget is formed at relatively Get price

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