Key Data Set Information | |
Location | CN |
Name |
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Use advice for data set | Users of this data set should note that environmental impacts from the extraction of limestone and gypsum are sourced from the China Life Cycle Reference Database (CLCD). However, due to the lack of specific data for clay and iron ore extraction and considering their lesser quantities, limestone mining emission data are used as estimations. When using this LCA data, attention should be given to the system boundary which consists only of cement production, the extraction and transportation of raw materials, and the production of electricity. The use and end-of-life processing of cement is excluded. The transportation and preparation phases of auxiliary materials such as fly ash are included, but their production stages are omitted from the analysis. For industrial waste, only the transportation and preparation process are considered, with the environmental impacts caused by the production of these materials being allocated to the original producer. The functional unit for the life cycle model is set as 1 ton of cement. |
Technical purpose of product or process | The data set describes the cement production process using a new dry pre-decalciner kiln with a capacity of 4000 tons per day, suitable for the manufacturing of portland fly-ash cement. This technology is identified as a progressive and eco-friendly technique that aligns with the growth trajectory of China's cement industry. It utilizes suspension preheating and pre-decomposition to meet high productivity needs while being more environmentally responsible. The primary usage of the produced cement is large-scale construction and infrastructure development, where portland fly-ash cement offers the desired durability and strength. |
Classification |
Class name
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Hierarchy level
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General comment on data set | The new dry pre-decomposition cement production model is selected. |
Copyright | No |
Owner of data set | |
Quantitative reference | |
Reference flow(s) |
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Technological representativeness | |
Technology description including background system | This article selects a pre-decomposition kiln-drying cement production model. The new dry pre-decomposition cement production technology is based on suspension preheating and pre-decomposition technology. It is a production technology that is more in line with environmental protection requirements and meets high productivity requirements, and has become the future development trend of China's cement industry. Therefore, the selection of new dry pre-decomposition cement production technology as cement model production technology has advanced and environmentally friendly requirements. |
Flow diagram(s) or picture(s) | |
Mathematical model | |
Model description | The life cycle functional unit is selected as 1t of cement to construct the life cycle model.The cement industry system boundary includes the production of cement, the production and transportation of raw materials, and the production of electricity, but does not include the use and processing of cement.For auxiliary materials such as fly ash, only the transportation and preparation process will be considered, and the production process will not be considered. |
LCI method and allocation | |||||
Type of data set | Unit process, black box | ||||
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 | Pollutant emission data from limestone and gypsum mining come from the China Life Cycle Reference Database (CLCD). Due to the lack of mining data for clay and iron ore and the small amount of mining, the pollutant emission data from limestone mining were used as estimates. The pollutant emission data from coal mining adopt the raw coal mining data from the China Life Cycle Reference Database (CLCD).The power production pollutant emission data uses the national average grid power mixing and transmission data from the China Life Cycle Reference Database (CLCD).The transportation stage considers the transportation of all raw materials required for cement production, including limestone, clay, iron powder, gypsum, coal and industrial waste. For the convenience of calculation, a diesel truck with a load of 10t on highway transportation is taken as an example. It is assumed that the average transportation of all raw materials The distance is 100km. The pollutant emission inventory data of diesel trucks with a load of 10 tons in the China Life Cycle Reference Data (CLCD) are used. | ||||
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 | |||||
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) | 2024-04-19T19:59:18+08:00 |
Publication and ownership | |
UUID | 72f576a5-9e18-47f9-b52d-8ae3693ea742 |
Date of last revision | 2024-04-20T14:41:36.950559+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=72f576a5-9e18-47f9-b52d-8ae3693ea742&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 | Materials production / Other mineralic materials | 864.9 kg | 864.9 kg | ||||||
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Elementary flow | Resources / Resources from ground / Non-renewable material resources from ground | 155.51 kg | 155.51 kg | ||||||
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Product flow | Materials production / Metals and semimetals | 28.21 kg | 28.21 kg | ||||||
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Product flow | Materials production / Other mineralic materials | 50.0 kg | 50.0 kg | ||||||
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Elementary flow | Resources / Resources from ground / Non-renewable energy resources from ground | 74.1 MJ | 74.1 MJ | ||||||
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Waste flow | Wastes | 300.0 kg | 300.0 kg | ||||||
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Product flow | Energy carriers and technologies / Electricity | 340.092 MJ | 340.092 MJ | ||||||
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Outputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 642.0 kg | 642.0 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.365 kg | 0.365 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 2.0 kg | 2.0 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.341 kg | 0.341 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.0102 kg | 0.0102 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.269 kg | 0.269 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.754 kg | 0.754 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.0086 kg | 0.0086 kg | ||||||
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Product flow | Materials production / Other mineralic materials | 1000.0 kg | 1000.0 kg | ||||||
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