Cradle to Consumer
Identity ID
70a3e0c8-fdae-4b2e-b875-1202c5d64dcc
Materials
Associated ID
f5028c11-ed94-456c-ad9f-8422a264f40e
Included activities starts
Included activities ends
Description
This is a market dataset representing the consumption market in the region. It includes transportation of the product from the factory gate to consumption, with transport services calculated according to the regional transportation conditions for the product.
Activity Description
The production process of steel billets includes steps such as converter smelting, molten steel refining, and casting and shaping of molten steel, covering energy consumption, material consumption, waste treatment, and environmental emissions during the production process.
Process Description
A steel billet is a primary product obtained by casting molten steel from a steelmaking furnace, typically in the form of slabs (for producing plates), blooms (for profiles and wire rods), and tube billets. It is an important semi-finished product in the iron and steel industry, possessing good plasticity and workability. Steel billets serve as raw materials for downstream processes and can be transformed through rolling, forging, drawing, and other processing methods into finished steel products of various specifications and shapes, such as steel plates, steel tubes, and steel bars, widely used in construction, machinery manufacturing, shipbuilding, and automobile manufacturing. Bearing steel billets are the preliminary form used to manufacture high-precision bearings, primarily made from high-carbon chromium steel. Their chemical composition generally includes carbon (0. 95% to 1.1%), chromium (1.3% to 1.65%), and small amounts of manganese, silicon, phosphorus, and sulfur. This composition imparts excellent mechanical and heat treatment properties to bearing steel, including high hardness, high wear resistance, and good dimensional stability.
Time period
2021
2026
Geography
China,Inner Mongolia Autonomous Region
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Steelmaking processes mainly include basic oxygen steelmaking and electric arc furnace steelmaking. Basic oxygen steelmaking is a common steel production method that removes impurities such as sulfur and phosphorus from molten steel through high-temperature combustion and oxygen blowing. By controlling the amount of oxygen injected and the processing time, the oxygen atmosphere and reaction conditions inside the furnace are regulated, thereby controlling the composition and quality of the alloy. Subsequently, the molten and refined steel is transferred via ladle to a turret. When the turret rotates to the casting position, the molten steel is poured into a tundish, which then distributes the steel through nozzles into individual molds. After cooling and solidification, this forms shaped crude steel billets. Electric arc furnace (EAF) steelmaking is a steelmaking method that utilizes the thermal effect of an electric arc to heat and melt raw materials. Electrical energy is introduced into the arc furnace through graphite electrodes, with the arc generated between the electrode tips and the furnace charge serving as the heat source. EAF steelmaking primarily uses scrap steel as the main raw material, along with auxiliary materials such as alloys, lime, and carbon raisers. The basic EAF steelmaking process includes slag removal and furnace lining repair, charging of metallic raw materials, power supply, melting, oxidation, reduction refining, and tapping. In this unit process, the scrap steel ratio for electric arc furnace steelmaking is approximately 40%.