The production of steel in electric arc furnace (EAF) generates a by-product called EAF dusts. These steelmaking flue dusts are classified in most industrialized countries as hazardous residues because the heavy metals contained in them, tend to leach under slightly acidic rainfall conditions. However, and at the same time they contain zinc species which can be use as a source to obtain valuable by-products. The present investigation shown results on the processing of an EAF flue dust using ammonium carbonate solutions.
Henan Dajia Mining Machinery Co., Ltd specilized in design, produce and install rotary kiln project over 20 years. For responding the demands of today metal and cement industry, our company provides for metal industries rotary kilns up to 6000 tpd with regard to quality, maximum capacity and minimum costs. Beside Cement industry we are also expert in recycling from Electric Arc Furnace Dust to zincoxide (ZnO) in waelz kilns.
Our rotary kilns use pneumatically-operated seals which are designed to ensure a continuous seal despite shifts in the position of the kiln
Our optimizing kiln tube construction ensures optimal safety with regard to material elasticity limits at operating temperature.
The air cooling of particularly large surface ensures the long life of the segments.
All drives for kiln types are designed to secure reliable operations under any operation conditions.
Products and Services:
Rotary Kiln Design
Kiln Shell & under tyre systems
Kiln inlet and outlet sealings
Kiln Tyres & Rollers
Hydraulic thrust roller
Rotary Kiln Main burner
Kiln camera systems
Kiln erection or dismountling
Kiln maintenance service
Rotary Kiln Ovality Measurements
Nominal Capacity (tpd)
Ø 4,0 x 59
Ø 4,2 x 60
Ø 4,4 x 64
Ø 4,6 x 64
Ø 4,8 x 72
Special rotary kiln design and intermediate rotary kiln diameter are designed by Dajia Engineering for special purposes.