In-Line Blending Sand Plants

In-Line Blending Sand Plants offer many of the same advantages as Recipe Sand Plants, but with a smaller investment since bins are not utilized. Benefits of using an In-Line Blending Sand Plant over a Classifying Tank Based Sand Plant or even a standard McLanahan Ultra Sand Plant can include higher product yields, more flexibility due to blending options, drier products and improved product consistency.

Evaluating the feed materials and products required will determine the appropriateness of the plant design. Most typically, an In-line Blending Sand Plant will be used where a single cut, or separation point, can be used to create two discrete fractions suitable for re-blending into multiple products. The accuracy of the cut is much greater than that found in a Sand Classifying Tank, so this plant configuration is preferred where specialty final products with tight specifications are targeted.

Inline Blending Sand Plant
Inline Blending Sand Plant Side View
Inline Blending Sand Plant

Why McLanahan In-Line Sand Blending Plants

The key to utilizing an In-Line Sand Blending Plant is to understand the process up front and maintain a balance within the system. McLanahan and our highly experienced personnel have history and knowledge in doing both. Our in-house lab and proprietary simulations ensure a plant can be designed to meet specific needs and capacity requirements. With the full line of McLanahan equipment, industry experts and our world-class Field Service Team, a solution to your application is just a few steps away.

How In-Line Sand Blending Plants Work

Screened -4 mesh (<5mm) sand fractions are pumped to a Hydrocyclone mounted above a Hydrosizer™. The Hydrocyclone serves to concentrate the feed to the Hydrosizer™ for more efficient operation and also to remove amounts of -200 mesh (<75µm). They Hydrosizer™ splits the feed into two streams: nominally coarse and fine. Generally, the cut is between 30-50 mesh (600-300µm). 

After the coarse and fine material is separated as underflow and overflow respectively, the coarse fraction is directed to the product stream while the fine fractions are directed to a blending vessel via a Hydrocyclone. A programmable logic controller-based algorithm then controls the ratios by which the fractions are blended on the fly.

Final products are dewatered using Dewatering Screens for a drip-free discharge. Any sand resulting from controlling the main product is directed to a separate dewatering process. 

Popular Applications for In-Line Sand Blending Plants

In-Line Sand Blending Plants can be used to create various types of sand, including foundry sand, plaster sand, glass sand, concrete sand, filter sand and sports sand.

Benefits of McLanahan In-Line Blending Sand Plants

  • Simple concept, simple operation
  • Accurate splits for accurate products
  • Multiple product outputs — online changes to the mix
  • Separations are automatically maintained
  • Field-proven, all-McLanahan equipment
  • Feed preparation modules are avilable to pretreat the feed
  • Effluent treatment equipment for process water recovery and solids management

Frequently Asked Questions

My deposit is variable. Is this a problem for this plant?

An In-Line Blending Sand Plant can handle some variation if it is understood up front and designed into the plant. In cases of large variation, a Recipe Sand Plant may be a better fit because of the bin capacity built into the plan