Dust recycling to rotary kilns

Details Dust recycling to rotary kilns Dust recycling to rotary kilns

1989-12-01

1991-04-16

Yuen, Henry C.

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

432105, 432117, F27B 1500, F27B 732

Patent

active

050078232

ABSTRACT:
A process and apparatus are described for recycling dust generated in rotary kiln processes such as cement manufacture. The invention resides in enriching the atmosphere in the kiln with oxygen so as to increase the heat generated and accommodate the introduction of recycled kiln dust. The oxygen enrichment and dust recycle are balanced so that the kiln operates to produce the same quality product as it did without either oxygen enrichment or dust recycle.

REFERENCES:
patent: 3074707 (1963-01-01), Humphries et al.
patent: 3193266 (1965-07-01), Becker
patent: 3206526 (1965-09-01), Rygaard
patent: 3397256 (1968-08-01), Paul et al.
patent: 4461645 (1984-07-01), Roth et al.
patent: 4517020 (1985-05-01), Steinbiss et al.
patent: 4741694 (1988-05-01), Mason et al.

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