Method for the collection of dust of a high zinc content during

Details Method for the collection of dust of a high zinc content during Method for the collection of dust of a high zinc content during

1974-11-21

1976-03-23

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 3, 75 25, C22B 116, C22B 702

Patent

active

039458172

ABSTRACT:
In the production of reduced iron pellets from a material mainly comprising dust exhausted from metallurgical furnaces for iron and steel production, such as blast furnaces, converters, hearth furnaces and electric furnaces, and/or a mixture thereof, by means of a grate-kiln a furnace including a pretreatment furnace comprising, a drying zone, a preheating zone a hardening zone and travelling grate passing sequentially through said zones, and a rotary kiln receiving the output pellets from the hardening zone, hot exhaust gases from the rotary kiln are first passed through said hardening zone and then through said preheating zone to harden and preheat green pellets moving therein. Said exhaust gases are then introduced into a first dust collector, where dust of a high zinc content is almost completely collected from said exhaust gases. Said exhaust gases so purified are then passed through said drying zone to dry green pellets moving therein. Said exhaust gases are then introduced into a second dust collector, where dust is further collected from said exhaust gases before said exhaust gases are discharged out of a stack to open air. When the temperature of said exhaust gases which have passed said first dust collector is not high enough for a heat source for drying green pellets moving in said drying zone, the temperature of gases for drying is raised by blowing hot gases, which are separately produced by a fuel burner, into said drying zone. The dust of a high zinc content collected by said first dust collector is used as a material for zinc refining.

REFERENCES:
patent: 2805930 (1957-09-01), Udy
patent: 3188201 (1965-06-01), Sontheimer
patent: 3224871 (1965-12-01), Collin
patent: 3414401 (1968-12-01), Fourt
patent: 3756804 (1973-09-01), Stevenson

Affiliated with

Also associated with

Rating

Method for the collection of dust of a high zinc content during does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the collection of dust of a high zinc content during , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the collection of dust of a high zinc content during will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1641648