emission factor gold ore

Nearly a tonne of CO2 emitted per ounce of gold

“Open pit mines emit on average around twice as much CO2e per ounce of gold produced as underground mines, at 0.85 tCO2e and 0.40 tCO2e, respectively. Open pit

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Emission Estimation Technique Manual

2005-9-13  estimating emissions from facilities engaged in gold ore processing. The scope of this document is to outline methods that can be used by the gold ore processing industry to: • identify which substances they are required to report as part of the National Pollutant Inventory (NPI);

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Emission Factor Development - Air Sciences

Gold Ore Processing and Production Facilities Permitting. In 2011, the United States Environmental Protection Agency (EPA) promulgated National Emissions Standards for Hazardous Air Pollutants (NESHAP) for gold ore processing and production facilities.

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Emission estimation technique manual

facility. It is intended to provide an understanding of the main gold ore processing technologies and their associated inputs and emissions. Facilities will have their own process flow diagrams and these should be used to facilitate emission estimation and NPI reporting requirements. Gold ore processing includes the following steps.

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Mercury flows in large-scale gold production and ...

2018-6-1  The tested emission factor for the roasting process was in the range of 0.5–1.7 kg/ton (Gao et al., 2016, Yang et al., 2016). However, Hg emission characteristics and Hg flows in the refining process were not tested in these two studies.

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Emission Estimation Technique Manual

2005-9-13  In addition gold refining and nickel smelting have been previously covered by the NPI in the Emission Estimation Technique Manual for Gold Ore Processing and the Emission Estimation Technique Manual for Nickel Concentration, Smelting and Refining respectively.

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Guidance on Emission Factors for the Mining Industry

2017-5-31  Crushing Emission Factor is utilized as a conservative estimate because there is no Primary Crushing Emission Factor. Additionally, the use of AP-42 Chapter 11.19.2-2 Controlled Emission Factors is allowed as described in the BAPC AP-42 Chapter 11.19.2 Emission Factor Decision Tree. Finally, multipliers for PM 2.5 are based on AP-42 Chapter 13.2.4.

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The environmental impact of gold production

2019-7-25  For an ore grade (i.e. metal content) of 3.5 gram per tonne of ore, the study estimated that production of each tonne of gold from non-refractory ore used approximately 200,000 gigajoules (GJ) of energy and 260,000 tonnes of water.

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11.24 Metallic Minerals Processing

2015-9-10  material from the bin. The emission factor will usually be applied twice to a storage operation: once for the loading operation and once for the reclaiming operation. If material is stored at multiple points in the plant, the emission factor should be applied

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NPI Emission Estimation Technique Manual for Mining

activities carried out at open-cut ore mines that could lead to emissions to air, water, and land or transfers of NPI listed substances in waste are as follows: • removing vegetation and topsoil • drilling and blasting overburden • drilling and blasting of ore • removing overburden and ore •

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Landmark Australian gold mine emissions study warns

Emission factor is kilograms of carbon dioxide equivalent per kilowatt-hour. The study used figures as of June 30, 2018. The five gold mines that are the least emissions-intensive are Gwalia, Mount Carlton, Agnew, Granny Smith and Tanami, though Ulrich said Agnew could be the best now since Gold Fields Ltd. equipped it with hybrid renewable ...

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Fire Emissions Compliance Study Air Sciences

Gold Ore Processing and Production Facilities Permitting. In 2011, the United States Environmental Protection Agency (EPA) promulgated National Emissions Standards for Hazardous Air Pollutants (NESHAP) for gold ore processing and production facilities. This rule is set forth in Volume 40 of []

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Pressure growing on gold mining firms to up game in

2021-3-20  PRESSURE is increasing on the world’s gold mining sector to improve its greenhouse gas (GHG) emissions, said Reuters.. Citing data from an ESG consultancy, Skarn Associates, the newswire said that gold mining firms have higher Scope 1 and 2 emissions than miners of nickel, copper, iron ore and metallurgical coal before factoring in freight and downstream emissions.

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AP-42: Compilation of Air Emissions Factors Air ...

AP-42, Compilation of Air Pollutant Emissions Factors, has been published since 1972 as the primary compilation of EPA's emissions factor information. It contains emissions factors and process information for more than 200 air pollution source categories.

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(PDF) SME Mining Engineering Handbook, Third Edition

A gold ore may contain as low as . ... emission thresholds exist for these emissions and are strictly . ... the ore in place is not the only factor to be considered, though, the ore plays about 60 ...

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Air Pollution Emission Inventory For 2008 Tourism Season ...

2019-3-9  The N Ox emission rates for these ships were calculated by multiplying the NOx emission factor (g/kw-hr) by the ship-specific hotel power load. No post-combustion control devices were present on any of the cruise ships. If a NOx emission factor was not provided but hotel power was known, the NOx emission factor was assumed to 12.6 g/kw-hr.

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WebFire Search US EPA

Detailed Emission Factor Search. Enter one or more search criteria then "Submit Search." Source Classification Codes should be entered without dashes. Description levels 1 through 4 should be selected in order. Be careful about limiting your search too much with descriptions, control codes and pollutants.

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Methodology - Skarn Associates

Downstream processing: Emissions are modelled based on typical energy consumption intensities for technology type, and grid emission factor for the location of the plant. Scope 3 currently excludes: Upstream emissions and use of products sold by consumers (e.g. downstream emissions from the consumption of metallurgical coal or iron ore in steel ...

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BACKGROUND REPORT PRIMARY ZINC SMELTING

2020-11-2  An emission factor relates the quantity (weight) of pollutants emitted to a unit of activity of the source. The uses for the emission factors reported in AP-42 include: 1. Estimates of area-wide emissions; 2. Emission estimates for a specific facility; and 3. Evaluation of emissions relative to ambient air quality.

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KOBELCO Group's CO2 Reduction Solution: Innovative ...

2021-2-22  The quantity of CO 2 reduced (d) equals (the quantity of reductant reduced × CO 2 emission factor). Typical raw material unit prices are: HBI > coke > iron ore > pulverized coal. The key ...

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Pressure growing on gold mining firms to up game in

2021-3-20  PRESSURE is increasing on the world’s gold mining sector to improve its greenhouse gas (GHG) emissions, said Reuters.. Citing data from an ESG consultancy, Skarn Associates, the newswire said that gold mining firms have higher Scope 1 and 2 emissions than miners of nickel, copper, iron ore and metallurgical coal before factoring in freight and downstream emissions.

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Volumetric geochemical model of Chortovo Koryto gold

Gold samples were analyzed by assaying and atomic-absorbent methods in laboratory environment in Lensk gold-ore company. Method sensitivity is 0.1 gr /tonne and 0.01 gr/tonne, respectively. The trace-element content in mineralization was analyzed by the emission-spectral semi-

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Sector-specific tools to calculate emissions - Canada.ca

2021-3-21  Australia NPI guide for gold ore processing. Australia NPI guide for nickel concentration, smelting and refining. Australia NPI guide for lead concentrating, smelting and refining ... Coal-fired power plants may use the following emission factor to estimate and report hexachlorobenzene (HCB) emissions: 0.013 mg HCB/tonne coal burned 1.

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(PDF) SME Mining Engineering Handbook, Third Edition

A gold ore may contain as low as . ... emission thresholds exist for these emissions and are strictly . ... the ore in place is not the only factor to be considered, though, the ore plays about 60 ...

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Environmental impact of high-value gold scrap

2020-8-25  The gold routes satisfying the global gold supply are mining (74%), recycling of high-value gold (23%), and electronic scraps (3%). Besides its applications in the investment, jewelry, and industrial sector, gold also has a bad image. The gold production in industrial as well as artisanal and small-scale mines creates negative impacts such as resource depletion, extensive chemical use, toxic ...

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(PDF) Greenhouse Gas Emission in Jewelry Industry: A

The ref ore, alte rna tive low-emis sio n sour ces of . ... GHG emission factor (kg CO 2 /kg) Silver, from combined gold-silver production, at refinery / PE S . 110. 57 . Silver, ...

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Air Pollution Emission Inventory For 2008 Tourism Season ...

2019-3-9  The N Ox emission rates for these ships were calculated by multiplying the NOx emission factor (g/kw-hr) by the ship-specific hotel power load. No post-combustion control devices were present on any of the cruise ships. If a NOx emission factor was not provided but hotel power was known, the NOx emission factor was assumed to 12.6 g/kw-hr.

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WebFire Search US EPA

Detailed Emission Factor Search. Enter one or more search criteria then "Submit Search." Source Classification Codes should be entered without dashes. Description levels 1 through 4 should be selected in order. Be careful about limiting your search too much with descriptions, control codes and pollutants.

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KOBELCO Group's CO2 Reduction Solution: Innovative ...

2021-2-22  The quantity of CO 2 reduced (d) equals (the quantity of reductant reduced × CO 2 emission factor). Typical raw material unit prices are: HBI > coke > iron ore > pulverized coal. The key ...

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National Emission Standards for Hazardous Air

2021-3-18  Ethylene Oxide Emission Standards for Sterilization Facilities (see also Hospital Ethylene Oxide Sterilizers) 40 CFR 63 Subpart O: Fabric Printing, Coating and Dyeing: 40 CFR 63 Subpart OOOO: Ferroalloys Production (major sources) 40 CFR 63 Subpart XXX: Ferroalloys Production (area sources) 40 CFR 63 Subpart YYYYYY (6Y)

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