Chromite ScienceDirect
Wastes of Chromite Mining Chromite mining wastes have the potential to cause serious environmental contamination This occurs in places around the
RocktoMetal Ratio: A Foundational Metric for Understanding
The total attributable ore mined and waste rock removed in the production of these 25 commodities sums to 376 billion metric tons, 83% of which is attributable to
ScienceDirect Characterization of heavy metal migration, the
Waste rock is abandoned lowgrade ore with no mining value Openpit mining activities generate a large amount of waste rock, and these rocks are usually
Recycling of ChromeContaining Waste from a Mining and MDPI
The chromiumcontaining slurry tailings were heattreated at 1100 °C, sintered with ammonium sulfate, water and sulfuric acid in a defined ratio at 300 °C, and
Minerals Free FullText Mine Waste Rock: Insights for
Waste Rock as Unique Class of Mine Waste Mine waste rock and tailings are typically the two major waste types at mine sites, regardless of the mineral commodity (eg, coal or base/precious
Revaluing mine waste rock for carbon capture and storage
43 Determining a mine waste rock value for CO 2 sequestration This section proposes a new, twostep method to determine the valuation of waste rock for CO 2 sequestration
A Sustainable Approach to Transforming Mining Waste
The mine waste is the geological material below the cutoff grade that is generated during mining operations Waste rock, tailings, overburden and other solid
Mining Waste Management for Sustainable Mining Practices
extracted Waste rock is usually stored in heaps, dumps or underwater with tailings especially for those with high sulphide concentrations Resource recovery technologies can beapplied for minerals recovery in the waste rock when the market prices increase Waste rock dumps can also be covered and revegetated post mining closure 33 Tailings
Chromite an overview ScienceDirect Topics
According to data from the International Chromium Development Association (ICDA), global chromite ore and concentrate production totaled 294 metric tons in 2014 (Richard, 2015)Data from the US Geological Survey (USGS) estimated world production in 2014 at 29 metric tons, with South Africa at 15 metric tons, followed by Kazakhstan at 4 metric tons,
(PDF) IMPACT OF CHROMITE MINING ON
The chromite mining activities in Sukinda Valley are creating difficulties for the livelihood as well as for the natural environment due to the discharge of massive amount of contaminants
Role of Chromite Mineralisation in Orissa Odisha
1942 and mining started from 1943 The area around Nuasahi lies at the southeastern fringe of Boula state forest About 70 Kms southwest of BoulaNuasahi lies the Chromite deposits of Sukinda Ultramafic belt of JajpurDhenkanal district In Orissa eighteen leases have been granted for mining of chromite covering an area of 7839sqkms
Characterizing toxic Cr(VI) contamination in chromite mine overburden
1 Introduction Mining of ores and metal production processes result in environmental degradation [1], [2]The metal chromium is used in many industries like electroplating, leather tanning, metallurgical, chemical processes, etc [3], [4]In the last few decades, the amount of chromium in both aquatic and terrestrial ecosystems has
IJERPH Free FullText Groundwater Quality, Health Risk MDPI
However, negated loading variables were depth, turbidity, NO 3, HCO 3, and Ni, with their coefficient (r) values of −0700, −0934, −0503, −0520, and −0514, respectively The chromite mines water contamination originated from extensive chromite mining activities, saline water intrusion, water leakage, weathering of mafic and
(PDF) Assessment and prediction of contaminant migration in
In the Sukinda mining area, around 76million tons of solid waste have been generated in the form of rejected minerals, overburden material/waste rock and subgrade ore that may be resulting in
Towards holistic technology solution to chromite ore
Safe management and disposal of chromite ore processing residue (COPR) is an unsolved global problem In spite of several global research efforts, the problem of safe management of COPR and redemption of dump sites has remained unsolved There is a high risk for all living beings in and around the COPR dump sites
mining amount waste rock chromite
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Chromite Mining in Sukinda Valley in Odisha Countercurrents
The history of chromite exploration in Sukinda valley started way back in 1949 Curiously, some boulders of chrome ore were reported by a local tribal named Kate Purty Soon after, the occurrence
CHROMITE Indian Minerals Yearbook 2020 IBM
of chromite accounted for 52% & above Cr 2 O 3 Fines grade followed by 30% least of 40 –52% Cr 2 O 3 (lumps 2% & fines 28%) grade Minehead closing stocks of chromite in 201920 were 2,411 thousand tonnes as compared to 2,253 thousand tonnes in 201819 The average daily employment of labour in chromite mines during 201920 was 5,891
(PDF) Resource Intensity Trends in the South African
The emergence of a symbiotic relationship with the platinumgroup metals industry was identified as a major development, with chromite ore intensity decreasing from 254 to 198 kg per kg
Potential Toxic Effects of Chromium, Chromite Mining and Ferrochrome
ferrochrome, chromite concentrate is combined with a reductant (coke, coal, charcoal or quartzite) in a high temperature submerged arc furnace or direct current arc furnace See Appendix 1 for resources about ferrochrome production processes ! Chromite ore mining and concentration produces overburden and waste rock, dust, tailings and tailings
Recycling of ChromeContaining Waste from a Mining and
Flotation of the chromecontaining cake is difficult due to the significant amount of fine wasterock slurry N Sulfuric Acid Treatment for the Production of Chromite Concentrates from Donskoy OreMining and Beneficiation Plant Sludge Tailings J Sib Fed Univ Chem 2016, 9, 515–524 [Google Scholar]
Assessment and prediction of contaminant migration in
Sukinda chromite valley is one of the largest chromite deposits of the country and produces nearly 8% of chromite ore It greatly contributes towards the economic development but at the same time deteriorates the natural environment It is generally excavated by opencast mining method In the Sukinda mining area, around
Potential Toxic Effects of Chromium, Chromite Mining and
ferrochrome, chromite concentrate is combined with a reductant (coke, coal, charcoal or quartzite) in a high temperature submerged arc furnace or direct current arc furnace See Appendix 1 for resources about ferrochrome production processes ! Chromite ore mining and concentration produces overburden and waste rock, dust, tailings and tailings
Chromium in Environment, Its Toxic Effect from ChromiteMining
Chromium has long been recognized as a toxic, mutagenic and carcinogenic metal It is toxic to microorganism, plants, animals and humans Chromium exists in environment in two stable forms: Cr(VI) and Cr(III) Cr(III) is less toxic and insoluble, while Cr(VI) is extremely toxic and highly soluble Chromium is used in many industrial
Chromite Northwestern University
Chromite is the only ore of chromium, making it especially important for mining and obtaining chromium Geoscientists claim there are nearly “11 billion tons” of chromite in the world, making it plentiful and abundant With this amount of chromite available, renewable energy sources can be sustained for years
Parameters influencing full scale sublevel caving material recovery
The caved waste from the overlying rock mass fills the void created by ore extraction The original application of the SLC mining method was in soft ground at the Minnesota and Michigan iron ore mines in the early 1900s [3] The method was later adapted to stronger ore bodies (requiring blasting) enclosed by weaker overlying and