Cradle to Gate
Identity ID
e2cfb74c-427e-4458-ad28-9c0bd3077013
Materials
Associated ID
6339ffa3-a72e-45c7-9c4f-776c3f8cc9e9
Included activities starts
Included activities ends
Description
Strontium sulfide is widely used in fields such as the manufacture of luminescent materials, electronic ceramics, metallurgy, chemical synthesis, the preparation of infrared window materials and catalyst carriers; Strontium sulfide is modelled as a pure substance; when modelling this substance the user needs to add a solvent of their choice in the model; the dataset contains the main raw and auxiliary materials, energy, atmospheric emissions and waste of the production process, in which the waste gas treatment process is included within the dataset boundary, and infrastructure such as the manufacture of production equipment and the construction of plant buildings is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product include crushing, screening, batching, roasting, leaching, refining, filter pressing, washing and drying.
Activity Description
The production activities of this product include crushing, screening, batching, roasting, leaching, refining, filter pressing, washing, drying and other processes.
Process Description
The chemical formula of strontium sulfide is SrS, CAS No. 1314-96-1. It is usually a white to light gray crystalline powder. Industrial products often appear light yellow or tan due to impurities. It is odorless and has a cubic crystal structure at room temperature. Slightly soluble in cold water, easily soluble in hot water, the aqueous solution is alkaline and slowly hydrolyzes to generate strontium hydroxide and hydrogen sulfide; it is insoluble in organic solvents such as ethanol and ether, and has relatively active chemical properties. It easily absorbs moisture and carbon dioxide in the air, and gradually transforms into strontium carbonate. It can react with metal oxides at high temperatures to generate corresponding strontium salts and sulfides. Industrially, it is mainly used in the field of luminescent materials (preparation of strontium sulfide-based phosphors, used in the manufacture of luminous powder, fluorescent coatings and light-emitting devices), electronic ceramics industry (used as a ceramic raw material to adjust the electrical properties of materials, and used in the production of electronic components); also used in the metallurgical industry (as a steelmaking desulfurizer to reduce the sulfur content in steel to improve toughness), chemical synthesis (as an intermediate for the preparation of other strontium compounds, such as strontium chloride, strontium nitrate, etc.), and can also be used to prepare infrared window materials, catalyst carriers, etc. .
Time period
2022
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The carbon reduction method is the traditional mainstream technology for strontium sulfide production. It is produced through the high-temperature reduction reaction of celestite ore and coke. The process is adapted to the characteristics of the ore resources and accounts for more than 85% of the domestic strontium sulfide market. This data set represents the mainstream technology: celestite is crushed to about 120 mesh, and after beneficiation to remove impurities, it is mixed with pulverized coal, sent to a roasting furnace, and roasted at 1000-1200°C to reduce strontium sulfate into water-soluble strontium sulfide. Then the strontium sulfide is extracted by water leaching, separated from the insoluble residue, and refined to obtain a strontium sulfide aqueous solution, which is filtered, washed, and dried to obtain the finished product. The main chemical reaction equation involved is: SrSO4 + 2C → SrS + 2CO2↑.