Other

Semen Alexandrovich Tager

Nikolai A Kaluzhsky

Nikolai S Shmorgunenko

Nikolai Ivanovich Eremin

Nikolai N Shipkov

Vladimir Nikolaevich Kostin

Elizaveta A Grigorieva

Olga S Chikul

Boris I Tyagunov

Vitaly I Chikul

Alexandr S Smirnov

Mikhail Ivanovich Zaitsev

Gennady A Krasnovsky, Deceased

Mikhail Yakovlevich Shpirt

Vladlen Iosifovich Panin

By Tatyana Krasnovskaya, Administratrix

Viktor Mikhailovich Kozlov

Dmitry A Vorona

Abram Zinovievich Jurovsky

Alexei G Krasnovskaya, Heir

Lev Nikolaevich Bobkov

Fritiof Meerovich Yakhilevich

Arkady V Perepelkin

The invention relates to a process for the production of alumina from mineral component of solid fuels containing aluminum, silicon and iron oxides. The process comprises burning a mixture of a solid fuel with limestone in the following molar ratios of limestone to said oxides: CaO:SiO.sub.2 =2.0, CaO:Al.sub.2 O.sub.3 =1.3-1.8, CaO:Fe.sub.2 O.sub.3 =1.0, at 1700.degree.-1900.degree. C. As a result, a melt is obtained containing calcium compounds: 2CaO.SiO.sub.2, 12CaO.7Al.sub.2 O.sub.3, CaO.Al.sub.2 O.sub.3, CaO.Fe.sub.2 O.sub.3. The melt is cooled and leached with soda solutions for extracting alumina. The sludge remaining after the leaching is suitable for Portland cement production. The invention enables a considerable enlargement of the range of starting products for aluminum and cement industries due to the use of the mineral component of solid fuels, an about twofold reduction of capital investments in the alumina production and reduction of the fuel consumption by 30-40%.

Process for the production of alumina from the mineral component of

The invention is to be used for afterburning of polydisperse high-ash thermal decomposition residues, as well as in the construction of the first stage of power utility furnaces for burning fuel with a low yield of volatile products and with a low reactivity. The furnace comprises a chamber having its bottom part narrowing downwards which is provided with an inlet pipe for admission of air and fuel to the chamber, and the top part of the chamber is provided with an outlet pipe for removal of combustion products from the chamber. A combustion stabilizer is accommodated in the chamber which comprises a blade-type stream swirling device having its blades arranged in the cross-section of the top part of the chamber upstream the outlet pipe in the path of flow of combustion products.

Air-jet furnace

Growing community of inventors

Moscow, Russia

Semen Alexandrovich Tager