Cradle to Consumer
Identity ID
2dbd4c5a-e76a-4913-919a-bf87aefa5dc4
Materials
Associated ID
20d8c7f2-e3d8-43b7-b98c-9be7ba36bfe9
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumption end, and the transport service is calculated based on the transport situation of the product in the region. Zinc sulfide is an important semiconductor material, widely used in fluorescent material manufacturing, optical coating, white pigments for plastics and coatings, additives for ceramics and glass production and other fields; zinc sulfide is modeled as a pure substance, and when modeling this substance the user needs to add a solvent of their choice in the model; this dataset includes the main raw and auxiliary materials, energy, waste and air emissions of the production process, while infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activity of this product includes reaction, pressure filtration, cleaning, slurrying and other process steps.
Activity Description
The production processes of this product include reaction, filter pressing, cleaning, slurrying, and other steps.
Process Description
The chemical formula of zinc sulfide is ZnS, CAS number 1314-98-3. Its common form is white or slightly yellow powder, and the pure product is colorless and transparent crystals. It is insoluble in water and dilute acid, but soluble in concentrated hydrochloric acid and nitric acid. It will melt at high temperatures (about 1180°C), and will undergo an oxidation reaction to generate zinc sulfate when encountering strong oxidants (such as nitric acid). Zinc sulfide is an important semiconductor material. It is mainly used in the industry for the manufacture of fluorescent materials (such as the preparation of phosphors, used in LEDs and picture tubes), optical coatings (as coating for infrared optical components), and can also be used as a white pigment (replacing lithopone) in the coating, plastic, and rubber industries. It is also used as an additive in the production of ceramics and glass to improve product gloss and mechanical strength.
Time period
2023
2026
Geography
China,Qinghai
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Wet precipitation method is the mainstream technology for the preparation of zinc sulfide. High-purity powder is produced through the precipitation reaction of zinc salt and sulfide. The process is tailored to the needs of fine chemical production and accounts for more than 80% of the domestic zinc sulfide market. This dataset represents this mainstream technology: it uses the classic wet metathesis process, the core of which is to generate soluble zinc salts and directly react them with soluble sulfides in aqueous solution to form insoluble zinc sulfide precipitates, followed by multiple steps of press filtration, cleaning, and slurrying to obtain the finished zinc sulfide product. The main chemical reaction equation involved is: ZnSO4 + Na2S = ZnS↓+ Na2SO4.