Calcium carbide crushing and screening plant and manufacturing machinery
Calcium carbide is an important chemical consumed in large tonnages by many user industries. Its reaction product with water viz., acetylene finds enormous applications in the welding and cutting of materials like iron and steel. In addition acetylene is also used in the manufacture of P.V.C., plastics, acetylene black and a host of other acetylene based chemicals. A small quantity of calcium carbide is used as desulphuriser in the iron and steel industry. Calcium carbide is the starting material forthe production of cyanamide fertilizer.
Equipments and machinery for Calcium carbide plant
The essential equipments for the carbide industry are all available indigenously. They are (i) A refractory-brick and carbon lined arc furnace, (ii) Step down transformer connected to the furnace by copper busbars and flexible cables. Other equipments include an electrode hoisting system, control panel, a water-cooling tower, jaw crusher, weighing machines and other essentials.
In order to achieve the purpose of crushing calcium carbide, we use two level jaw crushers equipments and tertiary crushing of the process configuration. Fine crushing machines are used Liming heavy-duty horizontal high calcium carbide crusher. During the process of calcium carbide, we must resolve the issues of “over iron “, “sealed”, “crushing”, and make the crushing equipments easy repair and maintenance convenient.
Process for manufacturing calcium carbide
The process for manufacturing calcium carbide is illustrated in Figure 11.4-1. Moisture is removed from coke in a coke dryer, while limestone is converted to lime in a lime kiln. Fines from coke drying and lime operations are removed and may be recycled. The two charge materials are then conveyed to an electric arc furnace, the primary piece of equipment used to produce calcium carbide. There are three basic types of electric arc furnaces: the open furnace, in which the CO burns to carbon dioxide (CO2) when it contacts the air above the charge; the closed furnace, in which the gas is collected from the furnace and is either used as fuel for other processes or flared; and the semi-covered furnace, in which mix is fed around the electrode openings in the primary furnace cover resulting in mix seals. Electrode paste composed of coal tar pitch binder and anthracite coal is fed into a steel casing where it is baked by heat from the electric arc furnace before being introduced into the furnace. The baked electrode exits the steel casing just inside the furnace cover and is consumed in the calcium carbide production process. Molten calcium carbide is tapped continuously from the furnace into chills and is allowed to cool and solidify. Then, the solidified calcium carbide goes through primary crushing by jaw crushers, followed by secondary crushing and screening for size. To prevent explosion hazards from acetylene generated by the reaction of calcium carbide with ambient moisture, crushing and screening operations may be performed in either an air-swept environment before the calcium carbide has completely cooled, or in an inert atmosphere. The calcium carbide product is used primarily in generating acetylene and in desulfurizing iron.
Calcium carbide crushing and screening plant
The Calcium carbide crushing and screening plant includes primary jaw crusher, secondary cone crusher or impact crusher, belt conveyor and vibrating screen. The carbide goes directly from the crushing and screening plant, and then, after purification, to the synthesis of organic chemicals such as acetaldehyde, acetic acid, acetic anhydride vinyl acetate, polyvinyl compounds, butanol, and chlorinated derivatives. Except in manufacturing Calcium Carbide, Our Calcium Carbide Crusher Plant are widely applied in the processing of quartz , limestone , basalt, chrome , dolomite, feldspar, fluorite, kaolin ore, marble , granite , iron ore ,copper ore , sandstone, silica , gold ore , silver ore , lead ore , manganese ore , tin ore and so on.
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