Articles

Degrees Of Accuracy

Accuracy in screening affects every phase of operations, all the way to the bottom line.

The secret to ROTEX® Screener success is the ability to provide the necessary accuracy, or "sharpness" of separation, on a consistent basis AND at high production rates. Here are three important ways this can help you.

FINES ANALYSIS

Fine's can't be reprocessed; good product is thrown away.
PRODUCT ANALYSIS

Product quality is OK... but production goals can't be met due to low product yeild.
OVERS ANALYSIS

Product must be recycled through mill to improve yield resulting in higher energy costs and more fines.

1. HIGHER YIELDS

Let's be specific about the term yield. Yield is the amount of material separated out as product through screening. By increasing screening accuracy, Rotex helps you maximize the recovery of on-size product from the material being screened. Rotex achieves this high degree of accuracy through a unique gyratory screening motion, which effectively distributes feed material over the full screening surface, without violent agitation or hop. On-size particles readily pass through the screen as larger particles are gently conveyed to the discharge end. This results in less tailover of good product, and consequently higher yields.

The horizontal gyratory motion used on ROTEX Screeners is known to provide the most efficient screening action at high production rates, combining consistent product quality with maximum product yield.

A 1 % greater yield on Rotex Screeners translates into 400 tons per year increased production in this food processing plant. Think about what it would mean to your bottom line if you could increase your product output by just 1 %, without any additional material or energy costs? Rotex can show you how!

FINES ANALYSIS

A screen with a large opening had to be used to reach production goals...
PRODUCT ANALYSIS

...but the customer rejected three shipments due to unacceptable levels of off-spec material
OVERS ANALYSIS

Production goals are met, but product is of low quality.

2. CONSISTENT ON-SPEC QUALITY

Rotex Screeners produce on-spec particle distribution in the finished product through highly efficient fines removal - even when incoming material fluctuates greatly in feed rate or fines level, conditions which commonly cause off-spec product in vibrating screeners and increase the chance of customer reject. The Rotex gyratory motion maintains quality because it stratifies the material and causes the fines to sift down and through the screen, rather than becoming airborne, tailing over and contaminating the good product. This Rotex action provides extreme sharpness of separation without sacrificing yield, assuring consistent quality and profitability.

FINES ANALYSIS
ROTEX screeners produce minimal product loss in fines.
PRODUCT ANALYSIS
Excellent product quality; fines and overs on spec.
OVERS ANALYSIS
ROTEX screeners produce minimal product loss in overs.

3. LESS REJECT OF GOOD MATERIAL

Accurate screening improves your profitability not just because of higher revenues, but also because of lower processing costs. When inefficient screening leaves excessive usable product in the rejects, consider the choices, all of them costly: . Reprocess? - higher energy costs . Substitute uses? - less profitable. Discard? - total loss! The only good alternative is to reduce rejects through more accurate screening.

Whatever your application, ROTEX INC. gives you the advantage of over 80 years' experience plus a dedication to continuing product development and improvement. Call today and let us help you. For the name of your nearest Rotex Representative, call Toll-Free 1-800-453-2321.