+86 0371 8654 9132

cromite concentrate to smelting

Theprereduction andsmelting ofchromite concentrate ...

chromite ore.TheUG-2oreprovedmorereducible, andsubstantial prereduction (over70percentreduction after ... concentrate should generate some240ktof42percent Cr2O3chromite tailings withachromium-to-iron ratio of ... Smelting Tests The preliminary work, which was aimed at an evaluation ofthe effects ofslag composition, was con- ...

Read More
cromite concentrate to smelting

Mar 14, 2021  cromite concentrate to smelting - Gateway Christian . Cromite Concentrate To Smelting - photolinecoin. Chromite Processing Plant includes areas such as crushing and screening,, Chromite Smelter Process ...

Read More
NIOSHTIC-2 Publications Search - 10003148 - Smelting ...

The Bureau of Mines cooperated with the Nord Resources Corp. to evaluate the feasibility of smelting a lateritic chromite concentrate from New Guinea to produce ferrochromium by electric arc furnace processing. One series of five tests was conducted in a nominal 100-kg furnace to evaluate slag compositions, carbonaceous reductants, and smelting characteristics of the chromite.

Read More
Insight into the Consolidation Mechanism of Oxidized ...

Apr 01, 2016  To produce more competitive stainless steel products, the utilization of low-cost chromite concentrate is of great importance. In a previous study, a high-quality product pellet (CMP) for blast furnace smelting process made from a mixture of 40 wt pct chromite and 60 wt pct magnetite concentrates was manufactured by a high-pressure grinding rollers pretreatment.

Read More
Kinetic Study on Smelting Reduction ofChromite Ore

Smelting reduction ofchromite ore was studied in systems and conditions related to ferrochromium production in submerged arc furnace. Dissolution ofchromite pellets or lumpy ore as well as reduction ofiron, chromium and silicon oxide were studied by immersing chromite samples in a slag melt in a graphite crucible. Experiments were

Read More
Theprereduction andsmelting ofchromite concentrate ...

chromite ore.TheUG-2oreprovedmorereducible, andsubstantial prereduction (over70percentreduction after ... concentrate should generate some240ktof42percent Cr2O3chromite tailings withachromium-to-iron ratio of ... Smelting Tests The preliminary work, which was aimed at an evaluation ofthe effects ofslag composition, was con- ...

Read More
A Brief History of Chromite Smelting

• Chromite is chemically inert, and has a very high melting point (2040°C), making it very useful for use in refractories • World resources are greater than 12 billion tons of shipping-grade chromite, sufficient to meet conceivable demand for centuries Chromite Smelting –highly simplified FeO.Cr2O3 + 4C fi Fe + 2Cr + 4CO ~1700°C

Read More
Insight into the Consolidation Mechanism of Oxidized ...

To produce more competitive stainless steel products, the utilization of low-cost chromite concentrate is of great importance. In a previous study, a high-quality product pellet (CMP) for blast furnace smelting process made from a mixture of 40 wt pct chromite and 60 wt pct magnetite concentrates was manufactured by a high-pressure grinding rollers pretreatment.

Read More
Simulation-based life cycle assessment of ferrochrome ...

May 01, 2021  The chromite concentrate slurry from the mill is filtered using a ceramic filter to bring the moisture content of concentrate to ca. 8.5–9.5%. It is then mixed with a binding agent, typically bentonite and sintering fuel in form of coke. Dusts from either smelting or SBS plant can be added at this stage.

Read More
KPMG commodity insights bulletin chromite

When chromite, the mineral, is extracted from the earth’s mantle, it is referred to as chrome ore. Chrome ore is crushed, screened, jigged into chrome concentrate and then smelted into ferrochrome. Ferrochrome, with nickel, is then processed into stainless steel. The processing of chromite is depicted in Figure 1. As chrome ore,

Read More
v118n6a15 Fluxing of South African chromite ore with ...

of each ore or concentrate is beyond the scope of this paper. The typical compositions of some South African chromite ores are given in Table I (Geldenhuys, 2013). It is very important to point out that ores listed in Table I are just a few examples of what is used by the industry. Several smelting operations rely on various other chromite

Read More
ferrochromium – Pretreatment for smeltinG

• direct smelting at 1800°C for Kazakhstan chromite and 1750° for South African chromite. • pre-heating at 900°C. • sintering at 1300°C for Kazak chromite and 1200°C for South African chromite. • pellet induration at 1100°C, followed by pre-reduction at 1400°C. -10-1)

Read More
OVERVIEW OF PGM PROCESSING - Anglo American Platinum

Union Chromite Recovery Plant PGM Concentrated Residues Tailings Purchased Concentrate Concentrate Furnace Matte Smelting Ore Anglo Converting Process (at Rustenburg) Our configuration differs from our competitors - we have a broad footprint across all 3 Bushveld limbs. Consequently, our integrated production system is more complex (i.e.13

Read More
Chromite - Wikipedia

Chromite is a crystalline mineral composed primarily of iron(II) oxide and chromium(III) oxide compounds. It can be represented by the chemical formula of FeCr 2 O 4.It is an oxide mineral belonging to the spinel group.The element magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr 2 O 4). A substitution of the element aluminium can ...

Read More
Extraction of Platinum Group Metals IntechOpen

Oct 02, 2017  This process involves removing and capturing sulphur from the concentrate prior to smelting in a DC arc furnace. Roasting a concentrate makes smelting more environmentally friendly; it also enables furnaces to accept any proportion of chromite, resulting in more efficient and cost-effective platinum production [9, 23].

Read More
How to Recycle Magnesite Chrome in Copper Smelting Furnaces

Aug 31, 2017  Chromite ore in combination with various quantities of magnesia is the primary constituent in basic refractories. In 1975, about 300,000 tons of chrome refractories were consumed in this country. The refractories are used as linings in steelmaking and copper smelting furnaces, rotary cement calciners and glassmaking tanks.

Read More
Metallurgical and Market Acceptance Test Work - FPX Nickel

The 2013 test work demonstrated that smelting Decar concentrates on a stand-alone basis, with the addition of a reductant and fluxing agents, produces a high-grade product of 35%-50% nickel (the remainder being almost totally iron, plus minor chromite), compared to typical ferronickel products containing 15%-40% nickel.

Read More
WO2014154945A1 - Method and apparatus for recovering pgm ...

In a method for recovering PGMs and ferrochrome from platinum group metals bearing chromite ore, a concentrate is prepared that contains most of PGMs and chromite of the ore and the concentrate is subjected to a heating step to dry and/or preheat the concentrate, after which the preheated concentrate is smelted under reducing conditions in a DC smelting furnace (14) to produce molten

Read More
chromite crusher - josef-deboer.at

chromite crusher specifications roller mills com. chromite crusher. jaw crusher chromite ore Mineral Crusher,Ore Crusher,Stone Crusher,Rock Crusher-- mineral crusher is suitable for hard and mid-hard rocks and ores, such as iron Our basalt crusher includes 5 series: jaw crusher series, cone crusher series,VSI The chromite ore crusher machine is widely applied in mine, metallurgy.

Read More
Ferrochromium from Domestic Lateritic Chromites SpringerLink

Oct 30, 2012  As part of its effort to devise suitable technology for processing low-grade domestic materials and recycling wastes, the U.S. Bureau of Mines has evaluated the feasibility of smelting a chromite concentrate derived from residues generated by the processing of nickel and cobalt from domestic later-ites. The product sought was a high-carbon ferrochromium suitable for stainless- and

Read More
Kinetic Study on Smelting Reduction ofChromite Ore

Smelting reduction ofchromite ore was studied in systems and conditions related to ferrochromium production in submerged arc furnace. Dissolution ofchromite pellets or lumpy ore as well as reduction ofiron, chromium and silicon oxide were studied by immersing chromite samples in a slag melt in a graphite crucible. Experiments were

Read More
An Improved DC-Arc Process for Chromite Smelting

AN IMPROVED DC-ARC PROCESS FOR CHROMITE SMELTING G. M. Denton1, J. P. W. Bennie1 and A. de Jong2 1Mintek, Randburg, South Africa. E-mail: [email protected] and [email protected] ... Chromite ore types 1 and 2 were preheated to 950°C by thermal treatment in a 4-stage cyclone preheater with an integrated calcining loop (Figure 2). The tests ...

Read More
WO2014154945A1 - Method and apparatus for recovering pgm ...

In a method for recovering PGMs and ferrochrome from platinum group metals bearing chromite ore, a concentrate is prepared that contains most of PGMs and chromite of the ore and the concentrate is subjected to a heating step to dry and/or preheat the concentrate, after which the preheated concentrate is smelted under reducing conditions in a DC smelting furnace (14) to produce molten

Read More
v118n6a15 Fluxing of South African chromite ore with ...

of each ore or concentrate is beyond the scope of this paper. The typical compositions of some South African chromite ores are given in Table I (Geldenhuys, 2013). It is very important to point out that ores listed in Table I are just a few examples of what is used by the industry. Several smelting operations rely on various other chromite

Read More
WO2018201218A1 - Carbothermic direct reduction of chromite ...

The reduction of chromite ore or concentrate takes place at much lower temperatures (e.g. 1200 to 1400 °C) compared to the conventional smelting technologies, and the ferrochrome particles formed are segregated from the unwanted residual gangue and spinel

Read More
KPMG commodity insights bulletin chromite

When chromite, the mineral, is extracted from the earth’s mantle, it is referred to as chrome ore. Chrome ore is crushed, screened, jigged into chrome concentrate and then smelted into ferrochrome. Ferrochrome, with nickel, is then processed into stainless steel. The processing of chromite is depicted in Figure 1. As chrome ore,

Read More
Evaluation of net smelter returns in the South African PGE ...

smelting and refining costs, through application of treatment and refining charges1. Penalty charges are applied to account for elements in the concentrate that affect process recoveries or costs. For a copper concentrate this may take the form of: Deductions7 – The amount deducted from concentrate grades to calculate the metal paid for

Read More
Metallurgical and Market Acceptance Test Work - FPX Nickel

The 2013 test work demonstrated that smelting Decar concentrates on a stand-alone basis, with the addition of a reductant and fluxing agents, produces a high-grade product of 35%-50% nickel (the remainder being almost totally iron, plus minor chromite), compared to typical ferronickel products containing 15%-40% nickel.

Read More
(PDF) REDUCTION BEHAVIORS OF CHROMITE AND NIO IN

REDUCTION BEHAVIORS OF CHROMITE AND NIO IN LIQUID FE-C ALLOYS T. Uzunoglu, B. Derin and O. Yücel Istanbul Technical University, Metallurgical and Materials Eng. Department Maslak, Istanbul, Turkey E-mail: [email protected] ABSTRACT In this study, reduction behaviours of Turkish chromite concentrate (48 % Cr2O3, 13.30 % FeO, 18.33 % MgO, 12.37 % Al2O3, 5.76 % SiO2) and

Read More
Electric Smelting Furnace of Ore

May 05, 2017  Smelting Chromite At Ohanga Lake, near the Canadian northern line in Ontario, the Chromium Mining Smelting Corporation has chromite averaging 17 percent chromic oxide and is concentrating it to over 40 percent. The concentrate is railed to Sault Ste. Marie, where the company has three electric furnaces making ferrochromium and other products.

Read More
(PDF) REDUCTION BEHAVIORS OF CHROMITE AND NIO IN

Ding et al. investigated the reduction of chromite by graphite in the presence of a CaO-SiO 2 slag or under CO atmosphere at different temperatures [6,7].In the present study, the reduction of Turkish chromite concentrate and nickel oxide in a carbon saturated iron alloy was studied with flux additions in a carbon crucible at 1600 °C.

Read More
Experiences in the production of J metallurgical and ...

PGM extraction circuit and secondary chromite extraction activity as applied specifically to UG2 ore against a background of actual plant experiences and circuit configurations applied in order achieve a suitable quality of chromite concentrate. Keywords UG2 chromite, spiral concentrators, chromite beneficiation * Xstrata, Rustenburg, South Africa.

Read More
Method for direct use of chromite ore in the production of ...

A three-stage process for obtaining metallic Cr units insitu during the production of stainless steel. Raw chromite ore or a concentrate produced from chromite ore is mixed with a carbonaceous reductant and slagging agents are added to an iron bath (24) for smelting and refining in a refining reactor (10).

Read More