Patent for Production of Ultra Low Phos Ferrochrome

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Process developed jointly by me allows production of ultra low phos FerroChrome in the SAF. Using the process developed, Tata Steel is the sole supplier of low Phos FerroChrome to Hitachi Metals, and the sole supplier from India to Sumitomo Metal Industries and JFE Steel among other companies.

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Patent for Production of Ultra Low Phos Ferro Chrome
India Patent 00471/CAL/2001
Issued : August 24, 2001
Inventors : Prabhash Gokarn, Goutam Dutta, CVGK Murty, JK Chatterjee, P Roy | Tata Steel, India
The invention provides a process for the production of ultra low phosphorus Ferro Chrome.
The blend of raw materials charge in the furnace is varied by reducing the quantity of friable chrome ore briquettes and correspondingly increasing the quantity
of friable lumps & lumpy ore.
There is a reduction in phosphorus input through lime & molasses; helped by the use of low phosphorus reductants (ULP Coke, LECO and Gas Coke).
This results in reducing the total quantity of phosphorus entering the furnace thereby producing ultra low phosphorus ferro chrome, with Phosphorus in Ferro
Chrome ranging from 0.015%max, 0.018%max and 0.020%max, under various input conditions.
Ultra Low Phos Ferro Chrome was developed for supply for making line pipe steel and razor blade steel, among other high end alloy steels.

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Patent for Production of Ultra Low Phos Ferrochrome

2. Patent for Production of Ultra Low Phos Ferro Chrome India Patent 00471/CAL/2001 Issued : August 24, 2001 Inventors : Prabhash Gokarn, Goutam Dutta, CVGK Murty, JK Chatterjee, P Roy | Tata Steel, India The invention provides a process for the production of ultra low phosphorus Ferro Chrome. The blend of raw materials charge in the furnace is varied by reducing the quantity of friable chrome ore briquettes and correspondingly increasing the quantity of friable lumps & lumpy ore. There is a reduction in phosphorus input through lime & molasses; helped by the use of low phosphorus reductants (ULP Coke, LECO and Gas Coke). This results in reducing the total quantity of phosphorus entering the furnace thereby producing ultra low phosphorus ferro chrome, with Phosphorus in Ferro Chrome ranging from 0.015%max, 0.018%max and 0.020%max, under various input conditions. Ultra Low Phos Ferro Chrome was developed for supply for making line pipe steel and razor blade steel, among other high end alloy steels.

Patent for Production of Ultra Low Phos Ferrochrome

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