… Calcined or sintered dolomite Dolomite is a natural double carbonate of calcium and magnesium. The heading covers crude … convert it into magnesium and calcium oxides by releasing carbon dioxide. On the other hand, sintered dolomite is …
… ‑ hydrated iron oxide containing iron and calcium carbonates. (b) Limonite , hydrated iron oxide. (c) … , magnetic iron oxide. (d) Siderite or chalybite, iron carbonate. (e) Roasted iron pyrites or pyrites cinders, …
… (otherwise known as plumbago or black lead) is a variety of carbon distinguished by its lustre and its property of … to its degree of purity, between 1.9 and 2.26; the carbon content of the purest grades ranges from 90 to 96 %, …
… in this Chapter are mainly used in the form of alloys or carbides, rather than in the pure state. The classification … follows the rules set out in Note 5 to Section XV; metal carbides are excluded from this Chapter. * * * The …
… According to their working principle, they include : (1) Carbon microphones . These depend on the variations in the electrical resistance of carbon granules, caused by differences in the pressure …
… special steel), etc. The heading does not include : (a) Barbed wire, and loosely twisted, non‑barbed, double fencing wire (“torsades”) ( heading 73.13 ). …
… the type of power unit (steam engine, diesel engine, gas turbine, petrol engine, pneumatic power engine, etc). These … box. (2) Steam locomotives of all types, including turbine locomotives using an electric drive, tank …
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