Enhancement of Mechanical properties of recycled Green sand by addition of Bovine feeces (Cow dung)

Foundries for the metal-casting industry plays a vital role to generate byproducts such as used foundry sand. Metal foundries use large amounts of the metal casting process. Foundries successfully recycle and reuse the sand many times in a foundry but by using repeated usage of Used foundry-sand vary due to the type of equipment used for foundry processing, the types of additives, the number of times the sand is reused, and the type and amount of additives which may lead to depletion of the quality of the casted product. In this study additive like Bentonite, this promotes good green strength, moderate dry and hot compression strength. Carbon which provides a reducing atmosphere and a gas film during pouring that protects against oxidation of the metal and reduces burn. Saw dust which controls sand expansion and to broadens the allowable water content was properly mixed to recycled sand to obtain the standard green sand composition. In addition to the said composition, Bovine feeces(Cow dung) which is a refractory material which improves green, dry compression strength and permeability of the recycled sand.The results were compared with green sand and recycled green sand and found that addition of Bovine feeces (Cow dung) in improving the mechanical properties.