Gate to Gate
Identity ID
b9b580f4-d82e-41ee-8f62-c4d1519d6d1d
Process class
Associated ID
c88a5cf8-c8e3-401a-84e2-3ca23f807bb1
Included activities starts
Included activities ends
Description
This dataset describes the process of screening 1 kg of crushed raw materials for non-metallic metallurgical auxiliaries during the production of non-metallic metallurgical additives, resulting in 0.96 kg of screened raw materials. This process should be used in conjunction with the production of 1 kg of raw materials for metallurgical auxiliaries. The dataset is compiled from data on screening processes in the production of multiple metallurgical auxiliary products, with data sources including the production of carburizers, exothermic agents, covering agents, and de-siliconizing, desulfurizing, and dephosphorizing agents. Infrastructure such as equipment manufacturing and factory construction is not included within the system boundary of this dataset.
Activity Description
The dataset includes direct electricity consumption and particulate matter emissions from the screening process after crushing.
Process Description
The dataset provides the service of 'screening process, metallurgical auxiliaries, non-metallic materials'. Screening is a method of separating particle groups based on properties such as particle size, specific gravity, electrical charge, and magnetism. This process specifically refers to screening by particle size, i.e., using a perforated screen surface to separate a mixed material of different particle sizes after crushing into different size fractions. This dataset is formed by consolidating data from screening processes in the production of multiple metallurgical auxiliary products. Based on the crushing process of non-metallic metallurgical auxiliaries, assumptions are made regarding the raw material composition of this process: it is assumed that 1 kg of crushed metallurgical auxiliary raw material contains graphite 0. 4g, calcium carbide 0.3, lime 0.3.
Time period
2020
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Screening is the process of separating particles using a sieve. The sieves used in this process can be categorized into vibrating screens, centrifugal screens, pressure screens, etc., among which vibrating screens are the most widely used. A vibrating screen consists of a screening surface and a vibrator. When material enters the sieve from the feed inlet, particles of different sizes are separated through the screening surface: smaller particles pass through the mesh openings, while larger particles move along the surface until they are discharged from the outlet.