Cradle to Consumer
Identity ID
3ec2cc29-290e-41f6-ade3-92134c43ccad
Materials
Associated ID
01d336f9-0576-44e6-a65e-41b99b1e537c
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 consumer end, and the transport service is calculated according to the transport situation of this product in this region. Calcium sulfate dihydrate is widely used in fields such as building materials, medical treatment, agriculture, paper, food and coatings; Calcium sulfate dihydrate 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 solid 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 and grinding.
Activity Description
The production process of this product includes crushing, grinding, and other steps.
Process Description
The chemical formula of calcium sulfate dihydrate is CaSO4·2H2O, CAS number is 10101-41-4, white monoclinic crystal or crystalline powder, odorless, hygroscopic, slightly soluble in acid, sodium thiosulfate and ammonium salt solutions, less soluble in hot water, very slowly soluble in glycerin, insoluble in ethanol and most organic solvents; chemical properties are stable, not easy to deteriorate at room temperature, heated to At 150-170°C, it loses part of its crystal water and generates hemihydrate calcium sulfate (gypsum of paris). When it is continued to be heated to above 200°C, it is completely dehydrated and becomes anhydrous calcium sulfate; it exists in the form of gypsum ore in nature. Industrially, it is mainly used in the field of building materials (raw materials for gypsum boards and gypsum blocks, and cement retarders to adjust setting time), medical fields (making gypsum bandages for fixing fractures, and dental model materials); it is also used in agriculture (improving alkaline soil, supplementing calcium and sulfur elements, or as feed additives), papermaking industry (as a filler to improve paper whiteness and smoothness), and in the food industry (as a coagulant for making tofu), and as a paint additive to improve the texture of the coating.
Time period
2022
2026
Geography
China,Shaanxi
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Calcium sulfate dihydrate production uses the natural gypsum grinding method and the industrial by-product gypsum processing method as the mainstream technologies, which together account for more than 95% of the domestic market. Among them, the natural gypsum grinding method relies on the physical processing of gypsum minerals and has extremely low costs, accounting for about 60%-70%. This data set represents this mainstream technology: first, the raw natural gypsum ore is put into the crusher for preliminary crushing to gypsum particles of 1~10mm size, and then the coarsely broken material is sent to the fine grinder for further crushing to 200~1000 mesh. The crushing is carried out in a closed state; the crushed and screened material is transported to the silo by pneumatic force, and ultrafine calcium sulfate dihydrate is obtained at the discharge port and stored for sale.