Production of potassium chromate from a low-grade Egyptian chromite ore and potassium carbonate

• Autorzy: El-Roudi A. M. , Othman A. G. , Alla E. M. A. , Zhran R. M.
• Języki publikacji: EN

Abstrakty

EN

The production of K2CrO4 from low-grade chromiteore, its preoxidiscd form and locally available materials has been studied. The roasting of chrome ore-K₂CO₃ mixture with a mole ratio of 1:2.75 for 300 min.at 1000°C was performed to prepare K₂CrO₄ with a recovery of 93%. Increased recovery was obtained when chromitc was preoxidised and roasted up to 975°C. The oxidation rate of roasting with SiO_{2 mole ratio of 2.9 was increased when adding a clay raw material. The reaction mechanism was presented.}

Słowa kluczowe

EN

chromite ore; potassium carbonate; potassium chromate

PL

chromit; węglan potasu; chromian potasu

• Wydawca: Centrum Materiałów Polimerowych i Węglowych PAN
• Czasopismo: Polish Journal of Applied Chemistry
• Rocznik: 2006
• Tom: Vol. 50, nr 3-4
• Strony: 65--73
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

El-Roudi A. M.

autor

Othman A. G.

autor

Alla E. M. A.

autor

Zhran R. M.

• Chemistry Department, Faculty of Science, Minia University, Minia, Egypt,

Bibliografia

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