Patents

US6702890: Process for the production of fly ash slurry

The invention describes an improved method for forming fly ash slurry by mixing fly ash and water with an additive containing 0.5-2 wt % ammonium salt of humic acid and 0.03 to 0.05 wt % tannin extract. The product slurry does not require large amount of water for transport to storage space due to its enhanced viscosity and stability.

Filing Date: 05-04-2002

Issue Date: 09-03-2004

Applicant: CSIR-Central Institute of Mining and Fuel Research (CSIR-CIMFR), Dhanbad

Patent No: US6702890

Application No: 10/117605

Inventor(s): Rao, Sukuru Ramakrishna (Dhanbad, In); Ghosh, Swapan Kumar (Dhanbad, In); Basu, Sibendra Kumar (Dhanbad, In); Mall, Barun Kumar (Dhanbad, In); Verma, Shreekant (Dhanbad, In); Singh, Gulab (Dhanbad, In); Mazumdar, Satinath (Dhanbad, In)

IPC Classification: C04B 018/06, C04B 018/18

Country: United States of America

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