What is special iron sand?

Heavy iron sand is a kind of iron sand raw material in weight, it plays the main role is the weight.
For example, the weight in sports equipment and the heavy iron sand in the construction machinery are used for heavy or pressure reuse of iron sand and iron ore.
General counterweight iron ore specific gravity 4.2 7.2 (bulk density of 2.5 to 2.5), and between the clients are drainage density (true specific gravity drainage density), to buy different products need different proportion of balancing the weight of iron ore.
Iron ore
Specification: 0.2 to 2.0 mm
Small proportion of iron sand: 6.2-6.5 tons/m3 pile weight 4.1-4.3 tons/m3.
Heavy weight of iron sand: 6.8-7.2 tons/m3 pile weight 4.8-5.2 tons/m3.
Purpose of balancing
Sports equipment and fitness equipment weight.
Heavy weight of electrical appliances.
Concrete weight
Mechanical weight of large mechanical engineering.

Wear-resisting engineering, such as airport runway, bridge road, wharf, bridge, steel plant, etc.