This paper introduces the copper concentrate drying technology in Flash Smelting processes,and compares characteristic and application status between the flash dryer and steam dryer,the result makes know that the steam dryer has evident advantage in terms of equipment investment,energy consumption and environment protection,it is provided with extensive use.

This article mainly introduces and analyses the working principal,technological process,technological parameter,production gain,common troubles of KUMERA steam dryer adopted by No.

The conventionalsteam drying, the heatpump (dehumidification)drying andsteam-heatpump combined drying are tested and analyzed.

The paper introduces selection,effect after putting into operation,existing problems and reformation conditions of process equipments reconstruction plan of matched copper concentrate steam drying system,dry ore dense phase conveying system and flue dust dense phase conveying system of 350 kt/a expanding reconstruction project of Jinlong Company.