Silica Sand Essay

SUITABILITY OF CRUSHER SAND ON CO2 MOULDING PROCESS PrabhuShankar.Na, P.Karunakaranb a PG Scholar, Erode Sengunthar Engineering College, Erode b Assistant Professor, Erode Sengunthar Engineering College, Erode

Abstract
The silica sand as a single source of supply for construction and foundry applications has lead to the depletion of the resource and makes it availability doubtful in the future. Thus the increased consumption rate of silica sand has lead to increase in price of foundry sand and we are in need to search for other resources which suitably replaces silica sand in foundry industry to meet the industrial demands. The “Crusher Sand” that is the available by-product from the manufacture of construction aggregates,

Introduction
Among the various moulding materials being used in metal casting, silica sand is used in more than 85% of cases. The proportion of sand in a moulding sand mixture is generally more than 90%.Hence the role of sand is vital in making a casting, may be ferrous or nonferrous. Various types of sands like silica,zircon,olivine,chromite,chamotte.,etc are used in metal casting. This project is an attempt to find alternative for silica sand which suitably replaces it in foundry mould making and core making.
Crushed Sand is manufactured by granulating good quality stone. The major drawbacks of natural sand like irregular particle sizes, presence of organic impurities etc. are totally overcome. There is a saving of 56% of money if sand is replaced by crusher dust. This also reduces the burden of dumping crusher dust on earth and hence environmental pollution.
2. Crusher Sand
The Indian Standards (IS 383) recognize the use of crushed stone sand (henceforth abbreviated as CSS) in making concrete. The Clause 2.1 identifies three types of fine aggregates, namely Natural Sand, Crushed Stone sand and Crushed Gravel sand.CSS is referred by various other names such as manufactured sand, crushed rock sand etc. Even though these are fine aggregates (based on the particle size), it possesses most of the properties of coarse