Calcined Aluminas: Calcined alumina is widely used in various industries. These aluminas are classified on soda, degree of calcinations, fineness and particle size distribution. These alumina grades are white crystalline powders that are predominantly alpha alumina of high chemical purity and consistent physical properties. The specific properties include extreme hardness, refractoriness, high mechanical strength and resistance to wear abrasion, chemical attack, and corrosion. Low soda grades provide excellent hot strength to the refractory body. Reactive Alumina yield a low water demand with very good flow properties when used in low-cement castables, ULCC and self-flow refractory mixes. Some aluminas have excellent grindability. They are recommended for usage in grinding media, wear resistant ceramic components and liners, owing to their superior packing characteristics. Polishing alumina grades are produced through controlled calcination and processing in order to obtain consistent particle hardness, shape and size distribution. They provide a choice of oil absorption values within the product range. These are recommended for use in solid bars, emulsions and pastes for metal and stone polishing applications. Details of application is given below
Alumina hydrate: Alumina hydrates are classified in based on fineness and particle size distribution. Coarse Alumina hydrate, a crystalline white powder, is available in both moist and dry forms are recommended in the manufacture of water treatment chemicals like aluminium sulphate (alum), PAC (Poly Aluminium Chloride), zeolite, aluminium fluoride, glass, etc. Fine alumina hydrates are fine white powders are used as fillers in paper and in Sheet Moulding Compounds, Dough Moulding Compound etc. They also function as flame retardants and smoke suppressant in cables, rubbers, plastics, etc. Details of application is given below
- Water Treatment (Alum/PAC)
- Fire Retardant Fillers- Cables and Composites