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emission factor gold ore

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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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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Nearly a tonne of CO2 emitted per ounce of gold

2020-8-31  “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  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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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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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 to each operation and should apply to the material

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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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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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Emission Estimation Technique Manual

2005-9-13  Open-Cut Ore Mining The flowsheet at Figure 2 provides a generalised description of open-cut mining. The main activities carried out at open cut ore mines that could lead to emissions to air, water, and land are as follows: • Removing vegetation and topsoil; • Drilling and blasting overburden; • Drilling and blasting of ore;

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AP-42, CH 12.9: Secondary Copper Smelting

2015-9-10  Emission Factor Listing for Criteria Air Pollutants, U.S Environmental Protection Agency, EPA 450/4-90-003, March 1990. These estimates should be considered to have an emission factor rating of E. c References 1,6-7. Expressed as kg of pollutant/Mg product. d ESP = electrostatic precipitator. 11/94 Metallurgical Industry 12.9-7

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Emission Estimation Technique Manual

2005-9-13  16 - Lead Emission Factor for Solder Manufacturing Facilities. 27 17 - Default PM ... the Emission Estimation Technique Manual for Gold Ore Processing and the Emission Estimation ... presence in ore or materials, or exceeds the bulk storage capacity for Category 1a substances), and determine whether the amounts used or handled are above the ...

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Landmark Australian gold mine emissions study warns

2020-6-30  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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Emission Estimation Technique Manual

2005-9-13  9 Inclusion of overall control efficiency factor in Equation 1 (CEi) 12 Major changes to table 1 – Include Wheel generated dust form unpaved roads - Change of emission factors for scrapers – Addition of coefficients for new equation for dust from unpaved roads 14 Alteration in Bauxite emission factor –

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Greenhouse gas and gold mines Nearly 1 ton of CO2

2020-10-7  Australian gold mines have a comparatively high greenhouse gas intensity — emitting more greenhouse gas per kilotonne of ore processed — roughly on par with Russian gold mines. Canadian mines have among the lowest greenhouse gas intensities, in part due to the large proportion of higher-grade underground mines.

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WebFire Search US EPA

Emission Factor Search WebFIRE contains the EPA's emissions factors for criteria and hazardous air pollutants (HAP) for industrial and non-industrial processes. To retrieve emissions factors, select one or more search terms from the dropdown menus below then click on the "Submit Search" button at the bottom of the page.

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12.6 Primary Lead Smelting - United States Environmental ...

2015-9-10  Table 12.6-2 (English Units). EMISSION FACTORS FOR PRIMARY LEAD SMELTINGa EMISSION FACTOR RATING: E Process Particulateb PM-10c Lead SO 2 Ore crushingd (SCC 3-03-010-04) 0.0445 0.036 0.002 NA Ore screeninge (SCC 3-03-010-27) 0.007 0.009 0.002 NA Tetrahedrite drierf (SCC 3-03-010-28)

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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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Transport and coarsening of gold nanoparticles in an ...

2021-3-11  The aqueous transport of primary gold nanoparticles has for some time been shown to be a factor in high-grade, “bonanza-type” gold ore zones in epithermal deposits 8,10,11 and thus may also be ...

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Climate risk and decarbonization: What every mining CEO ...

2020-9-5  location, production, and type of more than 3,000 mines worldwide for four major extracted commodities: copper, gold, iron ore, and zinc. 4 “High” water stress denotes a ratio of water demand to water supply of 40 percent or greater. 2 Climate ris and decarbonization What every mining EO

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Sources and Characteristics of Particulate Matter at

2019-11-30  The sources Sources and characteristics of particulate matter (PM) were determined in a modern underground chrome mine in Finland. Measurements were conducted at five locations in the mine: the maintenance area, blasting area, ore pit dumping area, crushing station and conveyor belt. The measurement set-up consisted of a Soot Particle Aerosol Mass Spectrometer (SP-AMS) for the

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Projection of Atmospheric Mercury Emission in China

2020-11-5  A technology-based emission factor method ... Industrial gold smelting Use of fluorescent lamp ... Hg recovery Hg production from recyclable resources Primary Hg ore mining Primary Hg ore mining Reduction of Hg content in solid wastes Lin et al., National Science Review, 2017, 4: 677–679 5.

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Greenhouse gas and gold mines Nearly 1 ton of CO2

2020-10-7  Australian gold mines have a comparatively high greenhouse gas intensity — emitting more greenhouse gas per kilotonne of ore processed — roughly on par with Russian gold mines. Canadian mines have among the lowest greenhouse gas intensities, in part due to the large proportion of higher-grade underground mines.

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Emission Factor Documentation for AP-42 Section

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 areawide emissions; 2. Estimates of emissions for a specific facility; and 3. Evaluation of emissions relative to ambient air quality.

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Pressure growing on gold mining firms to up game in

2020-11-24  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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Transport and coarsening of gold nanoparticles in an ...

2021-3-11  The aqueous transport of primary gold nanoparticles has for some time been shown to be a factor in high-grade, “bonanza-type” gold ore zones in epithermal deposits 8,10,11 and thus may also be ...

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Productivity in the Mining Industry: Measurement and ...

3.9 Gold ore mining: production and ore grade, 1971-72 to 2006-07 53 3.10 Silver/Lead/Zinc ore mining: smoothed production and ore grade, 1971-72 to 2006-07 54 3.11 Estimated yields in Australian mining, by industry 60 3.12 Estimated yield in Australian mining 61 3.13 Effect of yield changes on mining industry MFP 62 ...

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Remote Sensing Special Issue : Multispectral and ...

Numerous ore deposits such as orogenic gold, porphyry copper, massive sulfide, epithermal gold, podiform chromite, uranium, magnetite and iron oxide copper-gold (IOCG) deposits have been successfully prospected and discovered using remote sensing satellite imagery in the metallogenic provinces and frontier areas around the world.

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Analytical method Validation: ICP-OES

2015-11-12  After the wavelength calibration the following emission wavelengths (nm) were setup and are used by the ICP-OES for analysis of each of the elements: Cu 324.752, Pb 220.353, Zn 213.857, Co 228.616, Cr 205.560, Cd 214.440, Ni 232.003, Fe 238.204,

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Russian Geology and Geophysics GeoScienceWorld

Impact Factor. 1.25. 5 year Impact Factor. 1.582. New Online ... The Aksug Porphyry Cu–Mo Ore-Magmatic System (Northeastern Tuva): Sources and Formation of Ore-Bearing Magma. Specifics of the Caledonian Collision in the Ol’khon Region (Lake Baikal, Russia) ... 12 Solubility of Gold in Common Gold-Concentrating Minerals.

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Sources and Characteristics of Particulate Matter at

2019-11-30  The sources Sources and characteristics of particulate matter (PM) were determined in a modern underground chrome mine in Finland. Measurements were conducted at five locations in the mine: the maintenance area, blasting area, ore pit dumping area, crushing station and conveyor belt. The measurement set-up consisted of a Soot Particle Aerosol Mass Spectrometer (SP-AMS) for the

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