Key Data Set Information | |
Location | JNA-SD-CN |
Reference year | 2018 |
Name |
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Use advice for data set | Users should note that this dataset is representative of the prebaked anode production from 'cradle to gate', including transportation of raw materials and all production phases up to the finished product, but excluding the use and disposal stages. As specific production data for petroleum coke and coal pitch are not provided by prebaked anode companies, the set adopts generic data. The transportation data for raw material is based on regional averages and the environmental impact of less significant elements not having major contributions is not considered. Users are advised to apply caution when extrapolating this data to different geographic or technological contexts and should account for regional variability in transportation, supply chains, and emission factors. |
Technical purpose of product or process | This data represents the life cycle assessment of the prebaked carbon anode production process, primarily used in aluminum electrolysis. Prebaked anodes serve as a key component in aluminum smelters and are essential for the electrolytic reduction of alumina to aluminum metal. The process involves the use of petroleum coke, coal pitch, and other materials which undergo processes such as coarse crushing, calcining, molding, and baking to produce the anodes. |
Classification |
Class name
:
Hierarchy level
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General comment on data set | prebake |
Copyright | No |
Owner of data set | |
Quantitative reference | |
Reference flow(s) |
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Time representativeness | |
Time representativeness description | Literature published on September 20, 2018 |
Technological representativeness | |
Technology description including background system | The anode production system consists of coarse crushing workshop, calcining workshop, molding workshop, baking workshop and auxiliary workshop. The “cradle to gate” system boundary included raw material transportation, coarse crushing process, calcination process, calcining pollutant treatment process, vibration transport process, sieving and grinding process, mixing molding process, roasting process, roasting pollutant treatment process, defective products broken process. |
Flow diagram(s) or picture(s) |
LCI method and allocation | |||||
Type of data set | Unit process, single operation | ||||
Deviation from LCI method principle / explanations | None | ||||
Deviation from modelling constants / explanations | None | ||||
Data sources, treatment and representativeness | |||||
Deviation from data cut-off and completeness principles / explanations | None | ||||
Data selection and combination principles | The petroleum coke and coal pitch were supplied by several suppliers, and the production data cannot be provided by prebaked anode companies. As a result, the petroleum coke and coal pitch data in the database were adopted in this study instead of specific production data. The data of caustic soda came from the literature, the data of petroleum coke, and the LCI data of electric power were drawn from the literature. In the prebaked anode production process, the supply of natural gas in the baking link came from the local natural gas pipeline in Jinan. According to the field investigation, the transportation distance of petroleum coke, pitch and metallurgical coke used in this study was 150 km, 120 km, and 200 km respectively. It is assumed in this study that the load capacity of each transport truck was 20 ton, the average power was 220 kWh, the main energy consumption in the transportation stage was fuel consumption, and the energy consumption per unit of road transportation was 1836 KJ/(t. km). The total consumption of diesel oil in the transport phase was 74.22 L. In this study, the average emission coefficient of unit fuel consumption was used as the standard for the exhaust emission of vehicles to transport the raw materials. | ||||
Deviation from data selection and combination principles / explanations | None | ||||
Deviation from data treatment and extrapolations principles / explanations | None | ||||
Data source(s) used for this data set | |||||
Sampling procedure | A company in Jinan was selected as the research subject in this study. Currently, half of the world's prebaked anode products are produced in China. The production of the commercial prebaked anode in Shandong Province was 5.21 million tons in 2016, which accounts for 59% of the total production in China. As one of the large company in Shandong Province, the company chosen for case study can produce 400 thousand tons of prebaked anode annually. The production process is also typical for prebaked anode production in China. | ||||
Completeness | |||||
Completeness of product model | No statement | ||||
Validation | |||||
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Data generator | |
Data set generator / modeller | |
Data entry by | |
Time stamp (last saved) | 2024-04-19T20:42:09+08:00 |
Publication and ownership | |
UUID | b7e981fd-d6eb-4e39-929f-b2319108b4df |
Date of last revision | 2024-04-20T15:31:45.429935+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=b7e981fd-d6eb-4e39-929f-b2319108b4df&version=01.00.000&stock=TianGong |
Owner of data set | |
Copyright | No |
License type | Free of charge for all users and uses |
Inputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Product flow | Energy carriers and technologies / Electricity | 574.452 MJ | 574.452 MJ | ||||||
Product flow | Energy carriers and technologies / Crude oil based fuels | 20.0 kg | 20.0 kg | ||||||
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Product flow | Materials production / Other mineralic materials | 76.67 kg | 76.67 kg | ||||||
Product flow | Energy carriers and technologies / Hard coal based fuels | 235.3 m3 | 235.3 m3 | ||||||
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Product flow | Materials production / Inorganic chemicals | 0.44 kg | 0.44 kg | ||||||
Product flow | Materials production / Glass and ceramics | 2.22 kg | 2.22 kg | ||||||
0.3 | 0.3 | ||||||||
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Product flow | Materials production / Other mineralic materials | 60.0 kg | 60.0 kg | ||||||
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Product flow | Energy carriers and technologies / Crude oil based fuels | 1330.0 kg | 1330.0 kg | ||||||
Product flow | Materials production / Organic chemicals | 0.00478 kg | 0.00478 kg |
Outputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Product flow | Materials production / Other mineralic materials | 5.4 m3 | 5.4 m3 | ||||||
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Product flow | Materials production / Inorganic chemicals | 22.22 kg | 22.22 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 1.311E-4 kg | 1.311E-4 kg | ||||||
2.9149999999999997E-5 | 2.9149999999999997E-5 | ||||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 1.1648E-4 kg | 1.1648E-4 kg | ||||||
Product flow | Materials production / Metals and semimetals | 1000.0 m3 | 1000.0 m3 |