United States501 South Cedar Lane / P.O. Box 418 / Greencastle, PA 17225

Harbert's Products, Inc.

Servicing Canada, U.S.A & Global

800-377-3103

717-597-1717

Waste Stream


Over the years there have been three different processes used to Crush (re-process) Submerged Arc Welding (S.A.W.) Flux Slag;

  • Hammer Mills
  • Rotary Cage Mill Pulverizer
  • Fused S.A.W. Flux / Slag Crushing Unit

Hammer Mills

Typical Applications; Alum cake, Animal tankage, Barley shorts, Bran, Coal, Cocoa shells, Dried milk, Fish scrap, Gelatine, Gypsum, Limestone, Meat scraps, Oats, Salt cake, Shelled corn, Soya bean expeller cake, Steam bone.

Hammer mills were the most popular means of crushing SAW slag, however with today’s technology the hammer mill is no longer being used in the United States or Canada.

Rotary Cage Mill Pulverizer

Typical Applications; Range from Asbestos Ore, to Zinc Skimmings. Typically they are mostly used in the fertilizer industry.

Rotary cage mill pulverizers have come into favor do to their being readily available and ease of use. However do to their intended purpose of “pulverizing”, or turning the slag into powder (flour) the addition of new (virgin) flux is almost always required, this addition of new can be as high as 50%.

Fused S.A.W. Flux / Slag Crushing Unit

Typical Applications; Submerged Arc Welding Flux Slag Crushing (only).

Pros & Cons

Hammer Mills Cage Mills Slag Crushing Unit
Readily Available Readily Available Custom Built
No Granular Size Control No Granular Size Control Granular Size Control
Low Production Output Low Production Output High Production Output
No Product Inspection Points No Product Inspection Points Product Inspection Points
Multiple Uses Multiple Uses One Use
Easily Trained Operators Easily Trained Operators Skilled Operators Required

The S.A.W. Flux slag Crushing equipment used at Harbert’s Products, Inc. was designed and built by A. Beck Enterprises.

The Fused S.A.W. Flux / Slag Crushing Units being used at Harbert’s has waste stream of 4% to 10% (7% average), this difference is due to the type and size of the crushed flux.