Sand & Gravel Mining Industry in the world
Sand & Gravel Mining Industry in the world
This industry comprises establishments primarily engaged in the mining and quarrying of construction and industrial sand and gravel, the mining and quarrying of clays, ceramic and refractory minerals, and/or the beneficiation by washing, screening, and otherwise preparing the mined sand, gravel and clays. The principal activity of this industry is the production of sand and gravel for use as aggregates in the construction of buildings and infrastructure (e.g. highways) and a significant share of industry revenue (annually around 25 to 30 per cent) is generated from the mining or quarrying of clays, ceramic and refractory minerals for downstream manufacturing applications.This industry comprises four main segments: 1.Construction Sand and Gravel Mining which involves the operation, dredging and preparation of commercial grade sand and gravel. 2.Industrial Sand Mining which involves the operation, dredging and preparation of industrial grade sand, which is used glassmaking, foundry, abrasive, and many other industrial applications. 3.Kaolin and Ball Clay Mining which involves mining and beneficiation of kaolin or ball clay (e.g., china clay, paper clay, and slip clay) mainly used in the production of paper and refractories (kaolin), and sanitary ware and ceramic tiles (ball clays). 4.Clay and Ceramic and Refractory Minerals Mining which involves the mining and beneficiation of clays (except kaolin or ball clays), ceramic and refractory materials such as common clay and shale for production of bricks, lightweight aggregate and cement clinker, fire clay for refractories, drilling mud, foundry bonding agents and iron ore pelletizing.
