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ore hearth layer sintering

Sintering Process Usiug Pisolite Lumpy Ore as Hearth Layer

This ore is mainly made of goethite with a oolitic structure. After produced as lumpy ore, it is crushed to be a raw material for sinter ore, however, pisolite is known to have negative effects on sintering process. For a better use of this material, we propose a process to

Ore Sintering an overview ScienceDirect Topics

4/2/2010· The sintering process begins with the preparation of a sinter mixture consisting of iron ore fines, fluxes, solid fuel called bonding agents in Japan such as coke breeze, and return fines from the sinter plant and blast furnace as well as recycled ferruginous materials from downstream iron and steelmaking processes.

Modeling of Reduction Degradation of Iron Ore Sinter by

9/1/2004· INTRODUCTION In the continuous iron ore sintering process, fine iron concentrates are first blended with fuels and additives, then agglomerated on a moving strand at the beginning of which the sintering bed is ignited from above and air is sucked through the bed so that the flame front moves downwards while the strand is proceeding slowly.

The Sintering Process of Iron Ore Fines IspatGuru

3/9/2013· Each pallet car passes below a charging hopper where it is charged firstly by material of coarse granulometry 10 mm to 20 mm in a layer having thickness of 30 mm to 60 mm which forms the hearthposed mainly of return sinter. The hearth layer protects steel grates from over heating during the sintering process.

Sinter Plant Process blast

The Sintering Process of Iron Ore Fines Sintering plants are normally associated with the production of hot metal in blast furnaces in integrated steel pants. Solutions for sinter plants Mechanical, automation, and electrical engineering from a single sinter process, hearth layer, and blast furnace burden.

Sinter plant

The hearth layer, which is nothing but sinter in smaller size, restricts sticking of hot sinter with pallets. BTP is achieved in a certain zone of sinter machine, to optimize the process, by means of several temperature measuring instrument placed throughout the sinter machine.

Utilisation of ore fines by agglomeration with special

sintering strand. On the grate hearth of sintering conveyor a 25 mm layer of pellets is made followed by a bed of 150 mm depth of charge, which is then ignited by oil fired burner at temps. between 1100°C to 1150°C. The movement of the sintering strand is maintained at 2000 mm per minute and the vacuum is also maintained at

Iron Ore Sintering Process Model to Study Local

Iron Ore Sintering Process Model to Study Local Permeability Control. Y. Kaymak. 1, T. Hauck. 1, M. Hillers. 2 . 1. model includes all of the relevant sub processes within the sintering process as listed below: 1. heat transfer in gas and solids . 2. hearth layer x H.

Traveling Grate Sinter Plant Outotec

The Outotec traveling grate sintering process begins with the preparation of a raw mix of iron ores, fluxes, in plant dust and spillage fines, solid fuel, and return fines. Water is added to the raw mix to obtain optimum permeability for lower electricity consumption, maintained by conveying the raw mix carefully onto the sinter machine.

Sintering plant at a glance SlideShare

1/16/2018·ಘ progress ofbustion jone green mix sinter suction main waste gas fan wind box 25. 25 bed height level sensor flap gates ignition hood feed roll hearth layer green mix bin green mix shuttle conveyor thermo vision camera probes fedding system heat treat ment hood hearth layer bin cut offcut off plateplate 26.

Some experiences in the sintering of iron ores

Located behind the raw mix hopper is a hearth layer surge bin from which a hearth layer, com posed of +1 lin sinter, is laid on the pallets giving a depth of about 1 11in. The ignition hood is situated over the first two wind boxes the fuel used is coke oven gas having a calorific value of 490 500 Btu/ft3.

Iron Ore Sintering Process Model to Study Local

Iron Ore Sintering Process Model to Study Local Permeability Control. Y. Kaymak. 1, T. Hauck. 1, M. Hillers. 2 . 1. model includes all of the relevant sub processes within the sintering process as listed below: 1. heat transfer in gas and solids . 2. hearth layer x H.

Sintering Technology for Iron ores and Optimization of

10/19/2016· Hearth layer The hearth layer has basically one non critical function which is to prevent the damage to the pallet cars and grid bars caused by sintering of the cake to the hearth. It has been seen that some sinter mixtures made from specific low grade iron ores do not even require a hearth layer.

SINTERING PROCESS MCDOWELL WELLMAN ENG CO,US

The present invention provides an improved process for sinteringposed of iron oxide, e.g., iron ore, combustible carbonaceous material, and water with a flux such as limestone optionally presentbining the principles of recyclng gases exiting from the burden adjacent the feed end back through the burden in a region toward the delivery end of a traveling grate as well as

Sintering plant at a glance SlideShare

10/27/2014·ರ PRINCIPAL STEPS OF IRON ORE SINTERING TECHNOLOGY The iron ore fines , lime stone fines, dolomite fines, lime dust, metallurgical wastes and coke breeze are proportioned based on charge calculations. Then this mix is mixed and balled in mixing and balling drums with the addition of water and then loaded onto the pallet.

Calcium Ferrit Generation During Iron Ore Sintering

5/31/2014· Iron ore sintering is a heat treatment process for agglomerating fine particles into larger lumps, which then serve as the major burden for blast furnace. Under the mixtures, a hearth layer of approximate 20mm thick was previously prepared to protect the grate from thermal erosion. After charging, the fuel in the surface layer was ignited

Experimental Study on Lump Iron Ores as Sintering Hearth Layer

Meanwhile, the tumbler strength and the reduction disintegration index of sinter are also improved. During sintering experiments, the crack of two lump iron ores used as hearth layer didnt happen. Through using the new technology,bined water and the sulfur impurity were effectively decreased in the sintering products.

Dynamic Analysis and Streamlining Functioning of Hearth

bed depth, ignition time, ignition temperature, hearth layer, yield, production rate and sinter fines ratio. Jia P Zhao, Chin E Loo, and Rodney D Dukino described aboutbustion of coke, as a fuel in sinter mix leading to the formation of a moving flame front is a most important process in iron ore sintering. The fuel used,

Full text of IS 11282: Guidelines for Laboratory Pot

Full text of IS 11282: Guidelines for Laboratory Pot grate Sintering Tests for Iron Ore Fines See other formats ***** Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and

Dynamic Analysis and Streamlining Functioning of Hearth

Under expansion, in stage 2 of VSP, two hearth layer sinter screens 1.65 T/m3 and two return fines screen 1.75 T/m3 for screening the sinter are supplied by M/S. TVV, Italy. The screen is of single deck linear motion screen of size 8700 mm long and 3650 mm wide.

Calcium Ferrit Generation During Iron Ore Sintering

5/31/2014· Iron ore sintering is a heat treatment process for agglomerating fine particles into larger lumps, which then serve as the major burden for blast furnace. Under the mixtures, a hearth layer of approximate 20mm thick was previously prepared to protect the grate from thermal erosion. After charging, the fuel in the surface layer was ignited

Iron Ore Agglomeration Technologies IntechOpen

5/18/2017· Feeding is carried out in two layers: the hearth layer that protects steel grates from over heating during the sintering process, which is formed by sinter of coarse granulometry 1020 mm, with a granulometry not enough to be sent to the blast furnace in a layer of 36 cm and the layer of fine material 08 mm granulated to be sintered fine material, return fines, fluxes, and coke. Once

An INTRODUCTION 1. ABSTRACT process consists of wet

3.2 Pilot scale batch sintering reactor The manganese ore agglomerates were sintered in a batch sintering system, Figure 2. The batch sintering system consists of a butane burner, a charged into the reactor on a protective hearth layer. The height of both layers was about 200 mm. The surface coke above the agglomerated bed was 20 mm deep.

Process for cooling sinter on the strand pany

6/15/1976· This material, comprising screened iron ore and coke breeze, passes through a conventional roll feeder 53 and gravitates onto the hearth layer 27 as a first sinter mix layer 55. A cut off plate 57 is so positioned that the thickness of the first sinter mix layer is predetermined.

Utilisation of ore fines by agglomeration with special

sintering strand. On the grate hearth of sintering conveyor a 25 mm layer of pellets is made followed by a bed of 150 mm depth of charge, which is then ignited by oil fired burner at temps. between 1100°C to 1150°C. The movement of the sintering strand is maintained at 2000 mm per minute and the vacuum is also maintained at

hearth layer in pellet plant Wembley Primary School

Material is put on a sinter machine in two layers The bottom layer may vary in thickness from 30 to 75 millimetres 1 2 to 3 0 in A 12 to 20 mm sinter fraction is used also referred to as the hearth layer The second covering layer consists of mixed materials making for

Development of Secondary fuel Injection Technology for

growth are promoted and the permeability is improved in the sintering bed. Moreover, the low tempera ture sintering process depresses the iron ore self densification. Micro pores under 1 μm remain in unmelted ores and improve sinter reducibility. As a result, the technology enables to improve the pore structure in the sinter cake and sinter quality.

SeqiOlivine Improves the Sintering and Pelletizing

Sintering suction 0.45 m diameter, 0.6 m height 520 mm incl. 20 mm hearth layer 90 seconds 1220 oC 400 mm WG 1200 mm WG For adjustment of the chemistry, limestone, olivine or serpentine and quartzite were used. 1.25 of burnt limestone was added to improve the sintering performance.

Reducing PAH Emissions from the Iron Ore Sintering Process

5/12/2009· This study set out to reduce polycyclic aromatic hydrocarbon PAH emissions from the iron ore sintering process by optimizing its operation parameters obtained from the Taguchi experimental design. Four operating parameters, including the water content Wc range = 6.07.0 wt , suction pressure Ps range = 10001400 mmH2O, bed height Hb range = 500600 mm, and type of hearth

PDF Iron Ore Sintering: Process

Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag forming agents and solid fuel coke.