Close Go back Collapse all sections
Process Data set: Aluminum electrolysis carbon anode production ; carbon anode ; prebaked ; petroleum coke (en) en zh

Key Data Set Information
Location JNA-SD-CN
Reference year 2018
Name
Aluminum electrolysis carbon anode production ; carbon anode ; prebaked ; petroleum coke
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
  • ILCD: Unit processes / Materials production / Inorganic chemicals
General comment on data set prebake
Copyright No
Owner of data set
Quantitative reference
Reference flow(s)
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)
  • M01lb2zqToC0u5xoZgRcVKxAnHg.png Image
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
Type of review
Dependent internal review
Reviewer name and institution
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
Product flow Energy carriers and technologies / Electricity 574.452 MJ574.452 MJ
Product flow
Energy carriers and technologies / Crude oil based fuels 20.0 kg20.0 kg
General comment Metallurgical coke
Product flow Materials production / Other mineralic materials 76.67 kg76.67 kg
Product flow
Energy carriers and technologies / Hard coal based fuels 235.3 m3235.3 m3
General comment Coal pitch
Product flow Materials production / Inorganic chemicals 0.44 kg0.44 kg
Product flow Materials production / Glass and ceramics 2.22 kg2.22 kg
0.3 0.3
General comment water input in calcination process
Product flow
Materials production / Other mineralic materials 60.0 kg60.0 kg
General comment natural gas input in roasting process
Product flow Energy carriers and technologies / Crude oil based fuels 1330.0 kg1330.0 kg
Product flow Materials production / Organic chemicals 0.00478 kg0.00478 kg

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow
Materials production / Other mineralic materials 5.4 m35.4 m3
General comment Calcium sulphate (by-product in Roasting pollutant treatment process)
Product flow
Materials production / Inorganic chemicals 22.22 kg22.22 kg
General comment by-product
Elementary flow Emissions / Emissions to air / Emissions to air, unspecified 1.311E-4 kg1.311E-4 kg
2.9149999999999997E-5 2.9149999999999997E-5
General comment Particulate matter
Elementary flow Emissions / Emissions to air / Emissions to air, unspecified 1.1648E-4 kg1.1648E-4 kg
Product flow Materials production / Metals and semimetals 1000.0 m31000.0 m3