(Mg/h) [10 tons per hour (tons/h)] or less fixed sand and gravel plants and crushed stone plants with capacities of 23 Mg/h (25 tons/h) or less and portable sand and gravel plants and crushed stone plants with capacities of 136 Mg/h (150 tons/h) or less are exempt from the standards. All nonmetallic mineral processing equipment at lime plants
Typically the uncontrolled emissions from 200 to 600 tons/hr. crushers range between 1000 to 3000 kg./hr which after reduction by over 99% in dry type collection systems such as bag filters reduce to as low as 3 to 6 kg/hr Impact on Water Pollution . Dry collection control techniques generate no water effluent.
The aim of mineral processing is to get the mineral from rock or Ore that has good economic value in the market. Generally the ability of treating crude material from excavation into mineral .