Affiliations 1 State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.; 2 Dept. of Construction Management ...

 — In hydrometallurgy, fusion techniques are considered key in the processing of chromite ore. Salts containing easily ionized elements are often used as flux, which results in solutions with complicated matrices. A matrix correction approach was developed to remove sodium and phosphate ions from a solution obtained from the fusion of chromite …

 — Reduction/immobilization of chromite ore processing residue using composite materials based geopolymer coupled with zero-valent iron Ceram. Int., 44 ( 2018 ), pp. 3454 - 3463, 10.1016/j.ceramint.2017.11.148

A novel process for extraction of chrome oxides from chromite ores has been investigated. The process is based on the carbothermic reduction of chromite ore with solid carbon …

 — Chromate production from chromite ore is an important basic metallurgical process but is usually a source of severe pollution. The traditional chromate production …

MATERIAL SAFETY DATA SHEET Prince Minerals, Inc. 21 West 46th Street, 14th Floor New York, New York 10036 CONTACT NUMBERS: Prince Safety, Health and Environmental: (646) 747-4176 CHEMTREC (24-hrs): (800) 424-9300 Section I: Product Information HMIS Identity: Synonyms: Trade Names: Revision Date: CHROMITE …

Chromite (FeCr 2 O 4) is the main economic source of chromium metal and a raw material required by the metallurgical industry (about 90% of the extracted chromite ore is converted to ferrochrome by the metallurgical industry), ... Typically, chromite ore processing is performed using gravity separation techniques (including shaking table ...

MATERIAL (SARM 131) Chromite Sample The metallurgical-grade chromite ore sample was obtained from a PGE processing plant in Rusten-burg South Africa, situated on the Western limb of the Bushveld complex. The ore (particle size< 75 lm) was processed through physical and chemical steps (not supplied) designated for ferrochrome smelters.

 — DOI: 10.1016/j.jenvman.2020.110350 Corpus ID: 218689365; Detoxification and immobilization of chromite ore processing residue using the alkali-activated cementitious materials mixed with ascorbic acid.

In the presence of NaOH as the flux, chromite ore is reduced to Cr 4.2–4.9 Fe 2.1–2.8 C 3 with 85% Cr metallization after 2 h of reaction at 1300 °C. (5) Similarly, addition of cryolite which is widely used as an electrolyte in …

 — Overview of chromite ore processing. Chromite ore FeO·Cr 2 O 3 is a major ore for Chromium. India accounts for about 10% of world share of shipping grade Chromium ore reserves, having 45% Cr 2 O 3 content. South Africa and Zimbabwe and India are the Top five countries of Chrome ore processing industries in the Word (Indian Minerals …

 — Chromite ore processing residue (COPR) is a waste byproduct of chromate production that contains high levels of hexavalent chromium (Cr(VI)). Although the high temperature chromite process was banned in several countries, its legacy still exists at numerous contaminated sites. For instance, New Jersey alone has over 2 million tons of …

In hydrometallurgy, fusion techniques are considered key in the processing of chromite ore. Salts containing easily ionized elements are often used as flux, which results in solutions with complicated matrices. A matrix correction approach was developed to remove sodium and phosphate ions from a solution obtained from the fusion of chromite using sodium …

 — Considering the tailing disposal problems of chromite gravity concentration plants, the research works of Amer and lbrahim (1996) on hydrometallurgical processing of low-grade chromite ore (Barramiya, Egypt), using mechanical alkaline treatment in an attritor followed by oxidative leaching in an autoclave reveals that single-stage leaching …

Chromite Material Science . Iron Oxide Chemical Engineering . Chromium Material Science 36%. Magnetic Properties Keyphrases 20%. ... AB - This paper summarizes the characteristics of chromite ore processing residue (COPR) in terms of their chemical compositions, phases, and recycling potential of iron and chromium through …

 — 1 Chromite beneficiation: After the processing procedures such as crushing, screening, grinding, and gravity separation, we process chromite ore into chromite concentrate. 2 Grinding : Use a ball mill or a rod mill to grind the chromite concentrate into a fine powder with a fineness of 200 mesh.

 — Other countries with a substantial production from podiform deposits include Albania, Turkey, the Philippines, New Caledonia and India. Podiform chromite may occur as either high-grade massive, or low-grade Chromite--mineralogy and processing 237 disseminated ore, although the amount of massive ore mined has decreased during this …

 — As species we humans generate excessive amounts of waste and hence for sustainability we should explore innovative ways to recover them. The primary objective of this study is to demonstrate an efficient and optimum way to recover chromium and iron from chromite ore processing residues (COPR) for the production of chrome steel and …

DOI: 10.1016/J.APT.2021.05.001 Corpus ID: 236378112; Carbothermic reduction roasting for processing of ferruginous chromite ore using conventional and microwave heating @article{Tripathy2021CarbothermicRR, title={Carbothermic reduction roasting for processing of ferruginous chromite ore using conventional and microwave heating}, …

Chromite ore processing residue (COPR) is a typical hazardous waste, which contains Cr(vi) and poses a great threat to the ecological environment and human health. ... of COPR was carried out by using blast furnace slag (BFS) and fly ash (FA) to prepare alkali-activated cementitious materials (AACM). The influence of different factors (water ...

DOI: 10.1016/J.CERAMINT.2017.11.148 Corpus ID: 140095000; Reduction/immobilization of chromite ore processing residue using composite materials based geopolymer coupled with zero-valent iron

 — In hydrometallurgy, fusion techniques are considered key in the processing of chromite ore. Salts containing easily ionized elements are often used as flux, which results in solutions with ...

 — This process also eliminates the use of chromite ore fines that could result in furnace blow-outs or so-called bed turnovers, yields a high chromium (Cr) recovery, and can produce a low-sulphur (S ...

Semantic Scholar extracted view of "Effects of flux additions on the kinetics of chromite ore reduction with carbon" by D. Neuschütz et al. Skip to search form Skip to main content Skip to account menu

Chromite ore is prepared for processing using several methods, depending on the ore source and the end use requirements. Course clean ore is hand sorted, while fine clean …

Prepared by Ruth F. Schulte [(703) 648–4963, [email protected]] CHROMIUM (Data in thousand metric tons of contained chromium unless otherwise noted) Domestic Production and Use: In 2021, the United States was expected to consume 5% of world chromite ore production in various forms of imported materials, such as chromite ore, chromium …

 — ABSTRACT Lime-free roasting process, instead of high lime roasting process and less lime roasting process, has become the dominant method producing chromate salt all over the world. Remediation process and utilization treatment of chromite ore processing residue (COPR) is an environmental issue which is not solved …

 — DOI: 10.1016/j.chemosphere.2009.08.023 Corpus ID: 34009680; Treatment of chromite ore processing residue by pyrolysis with rice straw. @article{Zhang2009TreatmentOC, title={Treatment of chromite ore processing residue by pyrolysis with rice straw.}, author={Dalei Zhang and Shengbing He and Luwei Dai and …

In the paper are shown the history, processing and applications of chromite. Chromite is an oxide of iron and chromium with the chemical composition FeO.Cr 2 O 3 and belonging …