Cradle to Gate
Identity ID
03b4fbc0-283c-4f61-91f1-8a4f45d2fd65
Materials
Associated ID
8b79b336-b749-46eb-afee-1da6edfeb3af
Included activities starts
Included activities ends
Description
Calcium nitrate is often used as a raw material for nitrogen fertiliser, playing a role in promoting plant growth and increasing yield in agriculture; it can also be used as a component of combustion agents, explosives and spark-emitting agents; the dataset contains the main raw and auxiliary materials, energy, atmospheric emissions, wastewater and solid waste of the production process, in which the wastewater and waste gas treatment processes are included within the dataset scope, 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 lime nitration, precipitation and filtration, evaporation and melting, and granulation.
Activity Description
The production activities of this product include lime slaking, sedimentation filtration, evaporation and melting, granulation, and other processes.
Process Description
Calcium nitrate, chemical formula: Ca(NO3)2, CAS number is 10124-37-5. Inorganic compound, white crystalline powder. Easily soluble in water, liquid ammonia, acetone, methanol, ethanol, but insoluble in concentrated nitric acid. Calcium nitrate is often used as a raw material for nitrogen fertilizers and plays a role in promoting plant growth and increasing yields in agriculture; it can also be used as a component of incendiary agents, explosive agents and spark launchers.
Time period
2014
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
In the production of calcium nitrate, stones are fed into the calcium dissolution tank, react with 40% dilute nitric acid at 50-60°C, and then filtered to remove impurities to obtain a clear liquid; the clear liquid is concentrated by preheating, first-effect and second-effect evaporation; the concentrated liquid is sprayed into a drum fluidized bed for granulation, and the gas from granulation enters a water washing cooling tower for recycling, and finally returns to the granulation tower, while the granulated solids are screened to obtain calcium nitrate. The core reaction chemical equation of this process is: CaCO3 + 2HNO3 = Ca(NO3)2 + H2O + CO2.