Extraction of Chromium from Chromite Ore

The average grade of the metallurgical chromite ore was 43.4 pct Cr2O3, with 52 pct of the ore havg a chromium-to-iron ratio of 3:1 or over, 17.6 pct havg a ratio between 2:1 and 3:1, and 30.4 pct havg a ratio less than 2:1. Chemical-grade chromite ore generally ranged from 40 to 46 pct Cr2O3 with a chromium-to-iron ratio of 1.5:1 to 2:1.

Recovery of chromium from residue of sulfuric acid ...

One concept for separatg this phase from unreacted chromite powder is to transform it to water-soluble phases, by which chromium recovery and unreacted chromite enrichment could be both achieved. Wenzel et al. (2010) added ammonium sulfate the sulfuric acid leachg process of high carbon ferrochromium alloy at 170 °C to hibit the formation of anhydrous chromium sulfate.

recovery chromium from chromite ore

Flotation of Chromite Procedure. Bench-scale flotation tests were performed on chromium ores usg a Denver laboratory flotation mache. Locked-cycle flotation tests ...

Chromium processg | Britannica

Chromium processg: ... As the meral chromite, chromium is employed extensively as a refractory material. ... The recovery of chromium from the ore varies: ...

recovery chromium from chromite ore

Flotation of Chromite Procedure. Bench-scale flotation tests were performed on chromium ores usg a Denver laboratory flotation mache. Locked-cycle flotation tests ...

Chromite: The only meral ore of chromium metal

Chromium Production and Recyclg the United States. Chromium is not med the United States. The chromium consumed by United States dustry comes from: A) other countries the form of chromite ore, ferrochromium or chromium metal; or, B) chromium recovered from recycled metals.

Chromium processg | Britannica

Although chromium occurs many merals, the only ore exploited commercially is chromite. This spel meral is ideally composed of ferrous oxide and chromic oxide with the chemical composition FeO · Cr 2 O 3, but it is often found nature with magnesia (MgO) substitutg for FeO and aluma (A1 2 O 3) or ferric oxide (Fe 2 O 3) substitutg for Cr 2 O 3.

Meral Commodity Summaries 2001--Chromium

45 CHROMIUM chromium the form of chromite ore and ferrochromium to Western dustrialized countries. Staless steel, the major end use market for chromium, has ...

FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES

Table 1: Particle size distribution of low chromite ore as feed for flotation tests Particle size(mm) Weight% Cum.U.size % -0.180+ 0.076 41.42 100 -0.076 + 0.038 13.7 58.58 -0.038 44.9 44.9 2.2.2 Flotation Tests For each test, a certa weight of ore sample (chromite / serpente / chromite ore) was transferred to a 2-liter flotation cell.