The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1977
Filed:
Feb. 20, 1976
Nikolai Andreevich Kaluzhsky, Leningrad, SU;
Faitel Markovich Rubinchik, Leningrad, SU;
Gakif Zakirovich Nasyrov, Leningrad, SU;
German Abramovich Kaim, Leningrad, SU;
Vitaly Mikhailovich Averin, Leningrad, SU;
Savely Mikhailovich Milrud, Leningrad, SU;
Garry Vladimirovich Telyatnikov, Leningrad, SU;
Viktor Prokhorovich Lyakhov, Leningrad, SU;
Ljudmila Nikolaevna Abramova, Leningrad, SU;
Vladimir Ivanovich Tarasov, Leningrad, SU;
Vladislav Mikhailovich Denisov, Leningrad, SU;
Dinam Latypovich Nasyrov, Leningrad, SU;
Boris Alexandrovich Stolyar, Kirovabad, SU;
Muzafar Suleiman-ogly Tagiev, Kirovabad, SU;
Vladimir Ivanovich Lagno, Kirovabad, SU;
Vladimir Nikolaevich Kostin, Moscow, SU;
Other;
Abstract
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.