voestalpine Nortrak replaced its olivine/silica sand system at its Decatur, Illlinois, location with a chromite/silica furan-based nobake operation.
Choosing a New System Te molding system was assigned top priority in the
phased expansion. Sand system scenarios compared were: • Ester-cured phenolic-based, olivine/silica system, mechanical reclamation (the existing system at the time of study).
• Ester-cured phenolic-based, 100% olivine system, mechanical reclamation.
• Ester-cured phenolic-based, 100% olivine system, mechanical and thermal reclamation.
• Ester-cured phenolic-based, chromite/silica system, mechanical reclamation and magnetic separation.
• Furan-based, chromite/silica system, with mechanical reclamation and magnetic separation.
• Ester-cured phenolic-based, chromite/silica, mechanical reclamation, magnetic separation and chromite thermal reclamation. Table 1 shows the sand, treatment costs and investment requirements for each scenario. Te furan bonded chromite/
支і。 选择新系ঞ
型砂系统是фਈ扩ҭ项ऩङ重ИФ重。比较՟ 砂系统方案，ӣӰО： 硅砂系统，机械 砂ी榄橄，ׂ脂树醛酚化֡酯 ș 法Ӈ生（现有系统ङू९）。
％橄榄ी砂系统，机械 ，ׂ脂树醛酚化֡酯 ș 法Ӈ生。
％橄榄ी系统，机械法 ，ׂ脂树醛酚化֡酯 ș չ热法Ӈ生。
硅砂系统，机械 砂矿铁铬，ׂ脂树醛酚化֡酯 ș 法Ӈ生չ्选。
硅砂系统，机械法Ӈ 砂矿铁铬，ׂ脂树喃呋 ș 48 |
FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION June 2016
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