Cold bonded ore–coal composite pellets for sponge

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 ore pelletizing. However, there are

Cold bonded ore–coal composite pellets for sponge

Cold bonded ore–coal composite pellets developed on a laboratory scale (Part 1 of this two part paper) were tested in a rotary kiln sponge iron plant.

Cold bonded ore–coal composite pellets for sponge

2013-7-18  Fundamental studies carried out elsewhere indicate that the reduction of lump iron is accelerated if a limited amount of carbonaceous material is incorporated in the agglomerate of iron ore fines. Based on these considerations, cold bonded ore–coal composite pellets have been developed for sponge ironmaking in a rotary kiln.

Cold bonded ore–coal composite pellets for sponge

2013-7-18  Cold bonded ore–coal composite pellets developed on a laboratory scale (Part 1 of this two part paper) were tested in a rotary kiln sponge iron plant. This plant had a 12 m length refractory lined rotary kiln of 8 t/day iron ore throughput capacity.

Study of nonisothermal reduction of iron ore-coal/char

Cold-bonded composite pellets, consisting of iron ore fines and fines of noncoking coal or char, were prepared by steam curing at high pressure in an autoclave employing inorganic binders. Dry compressive strength ranged from 200 to 1000 N for different pellets. The pellets were heated from room temperature to 1273 K under flowing argon at two heating rates. Rates of evolution of product gases

"Cold bonding of iron ore concentrate pellets" by Joseph A

2015-1-1  Cold bonding is a low-temperature alternative to heat induration. Pellets can be cold bonded using lime, cement, sponge iron powder, and organic materials such as starch and flour. Cold bonding consumes less energy than heat induration, and has found favor for bonding self-reducing pellets and for refractory ores that are difficult to heat-treat.

Application of Cold Bonding Technology to High Grade

2021-5-28  Keywords: Iron ore, Concentrate, Pelletizing, Cold bonded pellets, Cold Pelletizing, Green technology, Agglomeration . ABSTRACT . In a world where decarbonisation is becoming a major concern for theglobal steelmaking industry, turning towards new technologies aimed at carbon footprint reduction is the next apparent step for

Pellet Cold Bonding Metallurgist & Mineral Processing

2017-6-22  The rest (four) of the ores are not suitable for this method. cold bonding of ore D shown in Table 3 means producing green pellets from ore D and sponge iron powders and drying at 200°C. Thus, pellets reach desired strength. c) Storage of green pellets and rapid drying method. 3) The study of metallurgical properties of cold bonding pellets.

Investigation on reduction of cement binder in cold

1997-2-1  Cold bonded iron ore pellets with adequate mechanical strength and other characteristics are emerging as a potential burden material for extraction of iron in different sized furnaces. Cold bonded pelletization processes, in general, involve use of Portland cement as binder or

High temperature properties of by-product cold bonded

2005-7-1  In this investigation, the fundamental reactions occurring during the heat treatment of cold bonded pellets (CBP) comprised of iron and steelmaking by-products have been studied. Blast furnace (BF) flue dust, which contains fractions of coal and coke particles, has been included in the CBP blend as a source of solid reductant.

Cold bonded ore–coal composite pellets for sponge

2013-7-18  Fundamental studies carried out elsewhere indicate that the reduction of lump iron is accelerated if a limited amount of carbonaceous material is incorporated in the agglomerate of iron ore fines. Based on these considerations, cold bonded ore–coal composite pellets have been developed for sponge ironmaking in a rotary kiln.

"Cold bonding of iron ore concentrate pellets" by Joseph A

2015-1-1  Cold bonding is a low-temperature alternative to heat induration. Pellets can be cold bonded using lime, cement, sponge iron powder, and organic materials such as starch and flour. Cold bonding consumes less energy than heat induration, and has found favor for bonding self-reducing pellets and for refractory ores that are difficult to heat-treat.

Cold Bonded Carbon Composite Pellets for Utilization of

It utilizes iron ore micro-fines and coal fines or coke fines or carbon containing waste fines in iron making or sintering. The micro-pellets provide energy to the sinter bed for reduction in coke breeze consumption. 38-48 % reduction in coke breeze has been found when 38 % blast furnace flue dust containing pellets were mixed with iron ore in

Study of nonisothermal reduction of iron ore-coal/char

Cold-bonded composite pellets, consisting of iron ore fines and fines of noncoking coal or char, were prepared by steam curing at high pressure in an autoclave employing inorganic binders. Dry compressive strength ranged from 200 to 1000 N for different pellets. The pellets were heated from room temperature to 1273 K under flowing argon at two heating rates.

Characterization of Preparing Cold Bonded Pellets for

This paper involves the preparation technologies of cold bonded pellets for direct reduction using an or-ganic binder-Funa. Investigation shows that the binder possesses excellent adhesive abilities to iron ore concentrates and is the key to the preparation of cold bonded pellets. Pretreatment on the binder-bearing

Reduction of iron ore with coal by microwave heating

1996-12-31  Cold-bonded composite pellets, consisting of iron ore fines and fines of noncoking coal or char, were prepared by steam curing at high pressure in an autoclave employing inorganic binders. Dry compressive strength ranged from 200 to 1,000 N for different pellets.

Investigation on reduction of cement binder in cold

1997-2-1  Cold bonded iron ore pellets with adequate mechanical strength and other characteristics are emerging as a potential burden material for extraction of iron in different sized furnaces. Cold bonded pelletization processes, in general, involve use of Portland cement as binder or

Pellet Cold Bonding Metallurgist & Mineral Processing

2017-6-22  The rest (four) of the ores are not suitable for this method. cold bonding of ore D shown in Table 3 means producing green pellets from ore D and sponge iron powders and drying at 200°C. Thus, pellets reach desired strength. c) Storage of green pellets and rapid drying method. 3) The study of metallurgical properties of cold bonding pellets.

Sticking behavior of iron ore–coal pellets and its

2014-8-1  The sticking behavior of iron ore–coal pellets (ICPs) at high temperatures under a load of 0.1 MPa was studied. Temperature was determined to be an important factor that affects the sticking behavior: the sticking increased with increasing temperature; the sticking index was 89.28% at 1373 K but only 4.78% at 1223 K.

Characterization of Preparing Cold Bonded Carbon Bearing

This paper involves the preparation of cold bonded carbon bearing pellets of metallurgical dust for direct reduction using binder. Investigation reveals that the binder is of vital concern to the preparation of cold bonded carbon bearing pellets. For agglomeration these metallurgical dust, quick lime displays excellent adhesive ability. The strength of pellets with addition 10% quick lime and

Cold Bonded Carbon Composite Pellets for Utilization of

It utilizes iron ore micro-fines and coal fines or coke fines or carbon containing waste fines in iron making or sintering. The micro-pellets provide energy to the sinter bed for reduction in coke breeze consumption. 38-48 % reduction in coke breeze has been found when 38 % blast furnace flue dust containing pellets were mixed with iron ore in

Iron ore–coal composite pellets/briquettes as new feed

2018-6-3  to convert the iron ore and coal/coke fines into cold bonded iron ore–coal composite pellets/briquettes. By producing composite pellets/briquettes from iron ore and coal/ coke fines, utilization of these fines also takes place. Material Science & Engineering International Journal

Characterization of Preparing Cold Bonded Pellets for

This paper involves the preparation technologies of cold bonded pellets for direct reduction using an or-ganic binder-Funa. Investigation shows that the binder possesses excellent adhesive abilities to iron ore concentrates and is the key to the preparation of cold bonded pellets. Pretreatment on the binder-bearing

Investigation on reduction of cement binder in cold

1997-2-1  Cold bonded iron ore pellets with adequate mechanical strength and other characteristics are emerging as a potential burden material for extraction of iron in different sized furnaces. Cold bonded pelletization processes, in general, involve use of Portland cement as binder or

Use of iron ore fines in cold-bonded self-reducing

2019-11-12  The feasibility of producing Direct Reduced Iron from cold-bonded self-reducing composite pellets made from Anglo American Kumba Iron Ore Sishen upgraded slimes was considered on laboratory scale. Composite pellets were made by mixing Sishen upgraded slimes, coke and different binders using a pelletizing disc by addition of moisture.

Reduction of iron ore with coal by microwave heating

1996-12-31  Cold-bonded composite pellets, consisting of iron ore fines and fines of noncoking coal or char, were prepared by steam curing at high pressure in an autoclave employing inorganic binders. Dry compressive strength ranged from 200 to 1,000 N for different pellets.

Self-reducing, cold-bonded pellets Hanqing, Liu

Self-reducing, cold-bonded pellets, comprising, by weight, about 60-79% iron ore concentrate having an iron content of at least about 60% by weight, a main portion of said iron ore concentrate being between about 200 mesh and 325 mesh, about 10-26% carbonaceous reducing agent with a particle size of about 48 mesh or smaller, and about 10-20%

A Computational Study on the Reduction Behavior of

2020-10-9  hearth furnace), where iron ore and coal fines in the form of cold bonded composite pellets/ briquettes are converted to direct reduced iron (DRI) nuggets for subsequent melting in the electric arc furnace. RHF is a donut shaped furnace where a rotating hearth carries the pellets/briquettes through various temperature regimes to produce DRI.

Sticking behavior of iron ore–coal pellets and its

2014-8-1  The sticking behavior of iron ore–coal pellets (ICPs) at high temperatures under a load of 0.1 MPa was studied. Temperature was determined to be an important factor that affects the sticking behavior: the sticking increased with increasing temperature; the sticking index was 89.28% at 1373 K but only 4.78% at 1223 K.

Cost Effectiveness Analysis of HYL and Midrex DRI

2016-4-27  HYL, also known as Energiron, technology efficiently reduces iron ore pellets into highly metallized hot or cold iron. Utilizing high operating pressure, the process uses reducing gases within a moving bed shaft furnace reactor to remove oxygen from iron ore pellets and lump ore. The process is independent of any