calcium carbide 50-80mm

Cutting and welding for metal material. To synthesize polyvinyl chloride(PVC). Fruit catalyst.

calcium carbide 50-80mm

(1)The reaction of calcium carbide with water, producing acetylene and calcium hydroxide.[CaC2 + 2 H2O → C2H2 + Ca(OH)2].    This reaction was the basis of the industrial manufacture of acetylene, and is the major industrial use of calcium carbide.    eg.synthetize rubber,synthetic resin,acetone,ketene and carbon blace.Meanwhile oxygen-acetylene flame is widely used in metal welding and cutting.(2)Heating powdered calcium carbide and nitrogen to producing calcium cyanamide,which can react with sodium chloride producing black cyanide.    black cyanide is used in gold mining and non-ferrous metal industry.(3)Steelmaking: as a powerful deoxidizer at ladle treatment facilities.(4)Calcium carbide is used in carbide lamps, in which water drips on the carbide and the acetylene formed is ignited. (5)In the ripening of fruit, calcium carbide is sometimes used as source of acetylene gas, which is a ripening agent similar to ethylene.

ITEM			INDEX
			Special Grade	A grade	Accept Grade	Within the limit of the size,%	2.5mm Siftage,%	Ash,%
Gas yield 20°C   101.3kPa L/kg≥	Size mm	80-200	300	280	255	≥85	≤5	≤1
		50-80	300	280	255	≥85	≤5	≤1
		25-50	300	280	250	≥85	≤5	≤1
		4-25	300	280	250	≥85	≤5	≤1
PH3 %(v/v)≤			0.06	0.08	0.08
H2S%(v/v)≤			0.10	0.10	0.10

calcium carbide 50-80mm