Surface-reacted calcium carbonate can be used in treating dentine hypersensitivity, wherein the surface-reacted calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and at least one acid. Wherein the acid is selected from the group consisting of ...
13.Water. Carbon dioxide . Sulphuric acid. Calcium hydroxide. Alpha. Beta. 水. 二氧化碳.硫酸.氢氧化钙. 阿尔法[α]. 贝塔[β]. 14.The citric acid in the broth solution is neutralized by calcium hydroxide, precipitating insoluble calcium citrate. ...
Elementary calcium reacts with water. Calcium compounds are more or less water soluble. Calcium carbonate has a solubility of 14 mg/L, which is multiplied by a factor five in presence of carbon dioxide. Calcium phosphate solubility is 20 mg/L, and that of calcium fluoride is 16 mg/L. Cal...
Williams FV, Ruehrwein RA. Effect of polyelectrolytes on the precipitation of calcium carbonate. J Am Chem Soc 1957; 79: 4898–4900.10.1021/ja01575a018Search in Google Scholar Yoon J, Lund DB. Magnetic treatment of milk and surface treatment of plate heat exchangers: effects on milk fouling...
The obtained nitric acid is recycled and the calcium sulphate crystals are transferred to an area to be dried and commercialised. The obtained di-calcium phosphate is led to a dryer to be commercialised, or reacted with sodium, ammonium, or potassium acid sulphates so as to be transformed...
Examples of such agents are calcium carbonate, water-aluminium sulphate, and metallic zinc-water-sulphuric acid. They are used in amount up to 4 per cent. No free acid should be left as this interferes with the setting. Additional neutral or alkaline accelerators, e.g. potassium sulphate, ...
Air may be admitted to the calcining furnace to eliminate calcium sulphide but is kept at a minimum to avoid zinc oxide formation; the calcined product may be quenched with water to form a slurry and sulphuric or other mineral acid added until the slurry reacts acid to an indicating means,...
the quantity of obtained calcium aluminates (C12A7, CA, and CA2) ranged from 20 to 40% by weight. Studies on the hydration process of YAC cement samples showed that the main products are hydrated calcium aluminates and dodecahydrate calcium alumino-sulphate. In sinters of YAC and OPC, no...
Oustadakis, P.; Tsakiridis, P.E.; Katsiapi, A.; Agatzini-Leonardou, S. Hydrometallurgical process for zinc recovery from electric arc furnace dust (EAFD): Part I: Characterisation and leaching by diluted sulphuric acid. J. Hazard. Mater. 2010, 179, 1–7. [Google Scholar] [CrossRef]...