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How Chemical Company Improved Uniformity of Chemical Products Using Flexible SWECO Separator
Problem:
Shattuck Chemical Company in Denver processes a wide variety of molybdenum compounds. Among these are Ammonium Dimolybdate, Technical Molybdic Oxide and Purified Molybdic Oxide. The company wanted the most efficient screening units to improve the uniformity of their powdered products.
Solution:
After several conventional screening devices were considered, Shattuck Chemical Company installed an 18" diameter SWECO Separator. This unit was tested for several months -- screening many chemical materials under various conditions. After successful results from the first Separator, the company selected two additional 18" SWECO units.
Results:
Ammonium Dimolybdate -- The first Separator was assigned to handle screening of this chemical. Weight of this material is 80 lbs. per cubic foot. About 5% of the material (+10 mesh oversize) is scalped off top of cloth and discharged into hopper for later reprocessing. Desired undersize passes through cloth to storage bin for packaging.
Except for occasional plant shutdowns, this Separator has operated 24 hours a day for 10 months without any mechanical repairs. During this period, the original screen cloth was used in spite of the abrasive nature of the chemical material handled.
Technical Molybdic Oxide -- The second SWECO Separator screens this high temperature material (250o or higher) at 500 lbs. per hour. Five percent (+20 mesh oversize and foreign matter) is also screened off top deck while desired -20 mesh undersized material drops through cloth. This Separator has operated 24 hours a day for 14 months with no repair maintenance. Same original screen cloth has been used even though subjected to screening out tramp iron and other foreign matter.
Purified Molybdic Oxide -- This material is a final product and is screened by the third SWECO unit at a rate of 300 lbs. per hour. About 99% of desired final product passes through 20 mesh screen cloth while 1% oversize is eliminated.
Comments:
Shattuck Chemical Company management reports complete satisfaction with their SWECO Separators. Units have operated trouble-free in unattended plant locations and under severe conditions. With plant expansion in mind, the company looks forward to using larger production SWECO units.
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Sweco World
Headquarters,
Florence, KY USA
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