April 22, 2020 – Buffalo, New York. Derrick® Corporation is proud to announce that twelve (12) Derrick Stack Sizer® fine screens are being used to produce premium concentrate with 70.5% iron content at Central Iron Ore Enrichment Works (CGOK) of Metinvest Group, Ukraine. CGOK production line was upgraded to incorporate fine screens in the spring of 2019. The fully upgraded concentrator is now capable of producing high-grade pellet for Direct Reduction of Iron (DRI) technology.
Derrick screens have been successfully used in iron ore since the 1950’s processing all types of iron ore, from removing fine impurities in Direct Shipping Ore sinter products to scalping relatively coarse (+45 to 75 µm) middlings and size control in pellet concentrates. Some of the greatest benefits of fine screening have been achieved by replacing hydrocyclones in grinding circuits. The improved classification of fine screens results in a shift in the grind/grade relationship. In other words, a similar grade can be achieved at a coarser grind size or a higher grade at the same grind size compared to cyclone classification. Screen classification also allows for increase mill throughput that results in a lower power and steel consumption per ton. Fine screening can allow for lower grade ores to be processed more economically and can be used to produce higher grade and more valuable products. Typical operating cost is 1 to 2 US cents per ton and paybacks for the capital costs are often measured in weeks.
Derrick Corporation is a family-owned and operated company with a global presence focused on pioneering fine-separation technology. Since 1951, Derrick has manufactured innovative technologies serving the Mining & Industrial, Oil & Gas Drilling, and Civil Construction industries. Derrick offers its clients leading-edge solutions and around-the-clock, award-winning service to maximize separation efficiency. Derrick’s products are renowned for their rugged reliability in industries known for intensely challenging environments and ever-evolving demands.
Vice President – Mining & Industrial Division
590 Duke Road
Buffalo, New York 14225
Office: +1 (716) 683-9010