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This 140 TPH plant is fed with a mixture of natural sand and crusher fines which is split into four discrete size fractions using hydraulic classification and screening; these fractions are re-blended into various products.
This producer is able to manufacture many types of fine construction aggregates such as concrete, masonry, asphalt, plaster, block and brick. Other specialty sands produced include filter, grouting, play, landscape, and sports (infields and outfields, and golf course sands including for bunkers, root zone, greens and fairways).
Given tighter customer specifications, demanded through job warranties, coupled with other influences such as today’s rising labor costs, difficulty in opening new deposits and increasing environmental requirements, producers look for ways of increasing yield and moving themselves out of the commodity market.
Fractionation plants are answer the needs of the forward looking producer -- LPT Group sales and engineering personnel were intimately involved in the development and refinement of the ‘Recipe’ fractionation concept in the Americas and other countries.

     
Quoting from the end user:

“A rise in the demand for concrete and other building materials to support rapid urban development during the twentieth century has led to the depletion of naturally occurring sand deposits around the world. ……”
“ …Study of current practices in the manufacture of sand from around the world, reveal, in most cases, the technology was based on utilizing surplus stocks of crusher dust. This has meant that generally, the product is produced with poor gradation and shape characteristics. In addition, the utilization of treatment methods which are historically used to remove the deleterious clay component of naturally deposited sands, has meant minimal control over the cut point in manufactured products. …”

This facility is “…the first in the world to combine a dedicated hard rock crushing circuit with extremely accurate wet separation and recombining of crushed sand fractions. …”

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McLanahan Corporation