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chrome ore sintering process

chrome ore sintering process

(PDF) Sintering Characteristics of Indian Chrome Ore Fines

chrome ore sintering process and that lime powder was. more effective than the LD slag. Because the addition of. lime fines or LD slag was made in conjunction with.

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CN103045859B - A kind of chromite fine ore sintering ...

The invention provides a kind of chromite fine ore sintering processing method produced for stainless steel, chromite powder is mainly carried out granulation sintering by the method after laterite, because the wettability of laterite and water is good, in pelletization, laterite just can adhere to as forming core particle and chromite fine ore mutually grows up, granulate agglomerating, thus ...

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(PDF) DIRECT SINTERING OF CHROMITE ORE FINES FOR ...

Chromite ore is available in nature mainly in the form of Cr2O3.FeO which contains 40 - 52% Cr2O3 and 15- 20% FeO by weight. Global annual output of chromite ore is approximately 20 Mt, which has ...

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Sintering Characteristics of Indian Chrome Ore Fines ...

高达12%返现 · Aug 11, 2009 · However, the maximum sintering temperature as well as the sintering time can be decisive factors for chrome ore sintering. The bed height for the chrome ore sintering process should be kept low, owing to the possibility of excessive heat generation during sintering for the deep-bed sintering process, which may eventually damage the sinter machine.

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Sintering Characteristics of Indian Chrome Ore Fines ...

Oct 01, 2009 · Sintering Characteristics of Indian Chrome Ore Fines. Chrome ore concentrate consists of high-temperature melting oxides such as Cr 2 O 3, MgO, and Al 2 O 3. The presence of these refractory constituents makes the ore a very high melting mineral. Hence, it is difficult to produce sinter from chrome ore by a pyrometallurgical route.

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Chromite - an overview | ScienceDirect Topics

Mihail I. Gasik, in Handbook of Ferroalloys, 2013 8.2.3 Chromium Ores and Chromites Processing. Chromite ores, as might many others, be mined by open-pit and underground methods. The share of underground mining varies between countries and deposits. The extracted ore is subjected to crushing and sorting (normally rich ore containing more than 45% Cr 2 O 3 is supplied to the processing plant ...

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CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

The total reaction involved in the process of sintering is the sum of a number of reactions which involve reactions in heating zone, reactions in sintering zone and reactions in cooling zone. These reactions are illustrated schematically for typical sintering of a lime-fluxed haematite ore in Fig. 11. Fig. 11.1: Development of Minerals during ...

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Chromite Ore - an overview | ScienceDirect Topics

Rauf Hurman Eric, in Treatise on Process Metallurgy: Industrial Processes, 2014. 1.10.3.3.3 Phosphorous Content of High-Carbon Ferrochromium. Phosphorous is detrimental to both the mechanical properties and corrosion resistance of stainless steels. In the submerged arc smelting of chromite ore, a portion of the phosphorus contained in the charge is vaporized and removed with the

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Ferrochrome Smelting In Zimbabwe - SAIMM

raw chrome ore on the international markets, particularly on the Chinese market, the country has generally adopted the policy not to export raw chrome ores. . 2 ... During the sintering process, chromite pellets are heated to a temperature where silicates fuse, binding the chromite grains. The reactions take place in an oxidizing environment,

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CN105112663A - Combined production process for high-carbon ...

The invention provides a combined production process for high-carbon ferro-chrome and semi-coke. The combined production process for the high-carbon ferro-chrome and the semi-coke comprises the steps that coal and ferro-chrome fine ore are prepared and used as raw materials; lump coal is subjected to pyrolysis and carbonization to obtain the semi-coke; the ferro-chrome fine ore, pulverized ...

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An investigation into the co-sintering process of ...

Chrome ore properties play a critical role in various pelletisation subprocesses (grinding, filtering, pelletisation and sintering) and slight variation in ore properties significantly affect the ...

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Sintering behaviours of chromite fines and the ...

Because the heat generation during chrome ore sintering is high owing to some exothermic reactions, compared with iron ore, and because chrome ore contains a high amount of fines, shallow-bed ...

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Sintering behaviours of chromite fines and the ...

Mar 28, 2008 · In sintering process, when the temperature is higher than the T r, particles inside the crystal lattice of Cr 2 O 3 obtain enough energy to overcome bond barriers and then diffuse onto the surface, form connecting bridges between the ore particles (by arrowhead in Fig. 10, Fig. 11, Fig. 12), resulting in the recrystallization and crystal growth ...

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Development of Chromite Sinter from Ultra-Fine Chromite ...

9) studied the sintering of chromite ore fines and the effect of various sintering param-eters, and found that the normal sintering process is suitable for the agglomeration of chromium ore fines. They reported a sinter yield of up to 70.6%, a tumbler index of 57.27% of the produced sinter and the incipient formation of 20% mol-ten phase (olivine).

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CN101705317B - Harmless process method for chrome slag by ...

The invention provides a harmless process method for chrome slag by utilizing metallurgy sintering and a blast furnace. In the method, chrome slag to be processed is taken as a raw material, coal dust or coke powder is taken as reducing agent, and adhesive serves as additive to prepare into a spherical core; the raw material of sinter ore or pellet ore is utilized to prepare into a spherical ...

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An investigation into the co-sintering process of ...

May 01, 2021 · Thus, some researchers have advocated for the direct utilization of low-grade chromite ore via the sintering process, which has been proven to be a feasible method [, , , ]. However, some problems remain unresolved, such as poor granulation properties, high solid fuel consumption, low sinter strength and productivity owing to its inferior ...

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CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

The total reaction involved in the process of sintering is the sum of a number of reactions which involve reactions in heating zone, reactions in sintering zone and reactions in cooling zone. These reactions are illustrated schematically for typical sintering of a lime-fluxed haematite ore in Fig. 11. Fig. 11.1: Development of Minerals during ...

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Chromite Beneficiation Process

Apr 12, 2016 · Chromite Ore Crushing. The crushing section for this 250 ton per day chrome mill consists of a coarse ore grizzly, a coarse ore bin with pan feeder to a 1’8″ reduction crusher and a crusher discharge conveyor to a crushed ore bin. On this particular ore, we find that there is no chrome liberated in sizes larger than ¼”.

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Chromite Ore - an overview | ScienceDirect Topics

Rauf Hurman Eric, in Treatise on Process Metallurgy: Industrial Processes, 2014. 1.10.3.3.3 Phosphorous Content of High-Carbon Ferrochromium. Phosphorous is detrimental to both the mechanical properties and corrosion resistance of stainless steels. In the submerged arc smelting of chromite ore, a portion of the phosphorus contained in the charge is vaporized and removed with the

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Sintering - an overview | ScienceDirect Topics

The taxonomy of sintering, showing process differentiation by various branches, starting with the application of pressure-assisted versus pressureless sintering. For pressureless sintering, one major distinction is between solid-state and liquid phase processes. Single phase, solid-state sintering is the best understood form of sintering.

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Study the effect of chromite ore properties on ...

Chrome ore properties play a critical role in various pelletisation subprocesses (grinding, filtering, pelletisation and sintering) and slight variation in ore properties significantly affect the ...

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Sintering Characteristics of Indian Chrome Ore Fines

ore sintering is high owing to some exothermic reactions, compared with iron ore, and because chrome ore contains a high amount of fines, shallow-bed-depth sinter cake production was attempted in ...

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WO2010103343A1 - An improved process for production of ...

A method for improved process for production of High Carbon Ferrochrome (HCFeCr) and Charge Chrome comprising: blending dried chrome concentrate and chromite fines in all possible proportions to form raw feed ore; subjecting the raw feed ore to the step of mixing hydrated lime, molasses and bentonite as the binders to the said mixture to form briquetting mixture feed; forming briquettes from ...

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Development of Chromite Sinter from Ultra-Fine Chromite ...

The schematic of sintering in the pot sintering set up is given in Fig. 1. The 10 kg of sinter mix containing chromite ore fine, coke fine, and fluxes, were balled in a rotating drum (pelletizer) with the required quantity of water spray. The mixed mass gradually bonded to make balls (pellets) of average diameter 2–8 mm.

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Estimating effect of chrome ore granulometry on sintered ...

Jul 18, 2013 · The effect of chromite ore granulometry and sintering process parameters was evaluated to improve the metallurgical performance of pellets in a submerged arc furnace. The drop test, compressive strength and porosity of sintered pellet samples from

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Development of Chromite Sinter from Ultra-Fine Chromite ...

9) studied the sintering of chromite ore fines and the effect of various sintering param-eters, and found that the normal sintering process is suitable for the agglomeration of chromium ore fines. They reported a sinter yield of up to 70.6%, a tumbler index of 57.27% of the produced sinter and the incipient formation of 20% mol-ten phase (olivine).

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Chrome Ore Beneficiation Process | Chromite Processing ...

May 15, 2019 · Chrome process equipment is wet type strong magnetic separator, and spiral chute (chrome spiral plant) of gravity separator. 3 Experimental results and discussion 3.1 Chrome magnetic separation process. The chrome raw ore is a flotation tail ore, which is mainly formed in the chromite, and the chromite is the target recovering mineral.

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Ferrochrome Smelting In Zimbabwe - SAIMM

raw chrome ore on the international markets, particularly on the Chinese market, the country has generally adopted the policy not to export raw chrome ores. . 2 ... During the sintering process, chromite pellets are heated to a temperature where silicates fuse, binding the chromite grains. The reactions take place in an oxidizing environment,

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OUR PROCESSES – Hernic

The -1 mm concentrate is fed to the Pelletising and Sintering plants for the production of sintered pellets. Chrome Recovery Plant (CRP) The Company introduced new technology in the jigging process of the Chrome Recovery Plant,in this process this section of the plant has the ability to

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The Sintering Process of Iron Ore Fines – IspatGuru

Mar 09, 2013 · The process of sintering begins with the preparation of the raw materials consisting of iron ore fines, fluxes, in-plant metallurgical waste materials, fuel and return fines of the sinter plant. These materials are mixed in a rotating pelletizing drum and water is added in order to reach proper agglomeration of the raw materials mix.

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Analysis of flux type variations in the sintering process ...

Sep 17, 2020 · The lack of nickel sulfide ore reserves in the world makes the processing of laterite nickel ore as an alternative raw material even higher. Sintering itself is a pre-treatment process for laterite nickel ore before it is fed into the blast furnace through a heating process below the melting point until agglomeration between particles occurs.

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Direct Metal Laser Sintering and Sintering Laser Melting ...

Like in the Selective Laser Sintering process, your metal part will be created layer by layer, according to your 3D model. A major difference is the sintering temperature. Polyamide needs to be sintered at a temperature of 160°C to 200°C, when metal melts at a temperature around between 1510°C and 1600°C meaning that a more high-wattage ...

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A novel performance assessment method of the carbon ...

Oct 01, 2021 · The sintering process is briefly described first in this section, then some relevant definitions are described in detail. 2.1. Description of sintering process. A downdraft sintering machine with an area of 360 m 2 is employed to be the research object . The iron ore, coke, dolomite, limestone, and returned sinter are combined in the ...

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Kyanite Mining | Processing Equipment | Flow Chart | Cases ...

IMAR 7 th Edition. Kyanite, andalusite, and sillimanite are naturally occurring anhydrous aluminum silicate minerals. Each has the same chemical formula, Al 2 SiO 5, but differing crystal structures, making them mineral polymorphs.These variances in crystal structure give somewhat unique physical properties to each of the three minerals, and each is used in slightly different ways by modern ...

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South Africa Ladle filling Chromite Sand Price of AFS30 ...

May 17, 2021 · Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the ...

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Study the Recycling of Red Mud in Iron Ore Sintering Process

Accordingly, the suitability of recycling this RM in the sintering process of Egyptian iron ore was studied. The effect of adding different amounts of RM to the sinter charge mixture (0-10 wt.%) on the sintering process performance as well as the chemical, physical and mechanical properties of the produced sinter was investigated.

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Iron Ore Sinter - an overview | ScienceDirect Topics

L. Lu, O. Ishiyama, in Iron Ore, 2015. 14.5 Conclusions. Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of sinter is cheaper, and compared with lump ore, fluxed sinter is often more reducible with better softening characteristics.

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USE OF SINTERED PELLETS IN PRODUCTION OF HIGH

by agglomerating chrome ore fines by briquetting , si nce the day of commercial production of High Carbon. 68 INFACON XI Ferro Chrome in 1968. In the process of constant pursuit of energy conservation, FACOR came across several ... After ensuring sintering of the

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