Other

Ljudmila Nikolaevna Abramova

Nikolai A Kaluzhsky

Gakif Zakirovich Nasyrov

Vladimir Nikolaevich Kostin

Boris Alexandrovich Stolyar

German Abramovich Kaim

Viktor Prokhorovich Lyakhov

Vladimir Ivanovich Tarasov

Faitel Markovich Rubinchik

Vitaly Mikhailovich Averin

Vladislav Mikhailovich Denisov

Muzafar Suleiman-ogly Tagiev

Savely Mikhailovich Milrud

Vladimir Ivanovich Lagno

Garry Vladimirovich Telyatnikov

Dinam Latypovich Nasyrov

A plant, comprising apparatus for sequential fluidized bed roasting, reducing and cooling of powdered alunite, mounted on a support and communicating with devices for supplying gas into each apparatus and with cyclones for trapping powdered alunite from flue gases and returning it into said apparatus. According to the invention, built-in the plant in front of the apparatus for roasting alunite, is a shaft heat exchanger having at least one throat subdividing its interior in height into a top and bottom chamber with the ratio of the passage cross-sectional areas of the wide and narrow parts falling within a range of from 2 to 12. The top chamber of the shaft heat exchanger communicates with a cyclone heat exchanger via a supply pipe to which is connected an initial alunite feeder and a cyclone, the bottom chamber of the shaft heat exchanger being in communication with a means for producing flue gases and a pipe discharging gas from the apparatus for reducing alunite though a cyclone. The plant may comprise the second heat exchanger built-in intermediate of the apparatus for roasting and that for reducing alunite. As compared with the known similar plants, the plant, according to the invention, provides for the production of alunite featuring a higher quality and at much lower expenditures.

Plant for fluidized bed heat treatment of powdered alunite

Growing community of inventors

Saint-Petersburg, Russia

Ljudmila Nikolaevna Abramova