Magyar Aluminiumipari Troszt

Aluminiumipari Tervezo Es Kutato Intezet

Krupp Polysius Ag

Aluterv Aluminiumipari Tervezo Vallalat

Aluminiumpari Tervezo Es Kutato Intezet

Janos Steiner

Karoly Solymar

Zsolt Csillag

Geza Szentgyorgyi

Laszlo Mahig

Ferenc Vallo

Laszlo Zsemberi

Ferenc Sitkei

Tibor Legat

Janos Morzal

Mihaly Marton

Istvan Kraxner

Gabor Molnar

Antal Sebok

Jozsef Toth

Balint Szabo

Bela Lajtai

Sandor Czafit

Wolf Goldmann

Peter Tiggesbaumker

Tibor Kalman

Pal Toth

Gergely Veres

Zoltan Osvald

Gyula Odor

Gerhard Butschko

Jozsef T Toth

Ferenc Rosemann

Tibbr Kalman

Ferenc Rosenmann

Jozsef Bona

Pai Toth

Gyorgy Lang

Kalman Wenzly

Apparatus for the classification or separation of solid materials

Air-jet mill and associated pregrinding apparatus for comminuating solid

The invention relates to plant operations for increasing the cycle times of heat exchangers by the digestion of the aluminium oxide content of a slurry according to the Bayer technology, said slurry consisting of bauxite and sodium aluminate liquor, using an equipment in which the material is heated stepwise and in more parallel material streams, then the material streams are combined and further heated, or combined and kept at the same temperature, or after combination further heated and kept at the same temperature, characterized in that a part of the parallel material streams is slurry, another part of same is aqueous sodium hydroxide solution, preferably sodium aluminate liquor containing sodium hydroxide, or water, and the parallel material streams are exchanged in the heat exchangers in a cyclical manner.

Cleaning boiler tubes of digesting heat exchangers used in alum earth

The invention relates to a method of burning, calcining or sintering fine-grain material in which the burnt material separated from the gas flow is supplied to a residence container from which a part of the material is returned to the burning zone and the remainder of the material is supplied to the cooling zone. Such a method is distinguished by a low heat and energy requirement and by a simple construction of the apparatus and permits ideal adaptation of the burning conditions to the particular material.

Method and apparatus for burning fine-grain material

A self-adjusting powder distributor--which is particularly intended for use with alumina calcination apparatus--comprises a casing with a permeable partition, a plurality of outlets, and means for introducing preheated hydrate above the partition and fluidizing air therebelow. The fluidized hydrate withdraws through outlets of the casing for further treatment or partly as final product. The casing is provided with means by which the amounts and mutual ratios of the withdrawing material can be adjusted according to preselected values by altering the cross-sectional flow area or the level of the outlets.

Self-adjusting powder distributor

Self-adjusting power distributor

In a sediment raking device with a centrally arranged rotated torque tube, radially arranged booms and rake arms between said booms at a lower level a link rod is provided between the rake arms and the torque tube which is connected to the rake arm by a hinge and to the torque tube by a universal joint (FIG. 1).

Sediment raking device

Displacement slurry pump equipped with known piston-rod drive, in which on a piston rod expediently three pistons are arranged at a distance of at least one stroke length, they are a liquid piston moving the auxiliary liquid free of solid matter, and on both sides thereof a slurry piston each moving on one side the slurry, on the other side, however, the auxiliary liquid. The liquid piston fits sealed to the liquid cylinder provided with liquid suction valves, whereas the two slurry pistons fit by slot to the slurry cylinders provided with slurry suction valves and slurry delivery valves. The effective section of the liquid cylinder is larger than the effective section of a slurry cylinder each. The slurry pump may be of single-operation or of double-operation, of one-cylinder or two-cylinder or three-cylinder construction. During the operation, at the delivery stroke of the slurry cylinder, auxiliary liquid is pressed from the liquid cylinder through the aperture between the slurry cylinder and slurry piston, preventing thus the slurry from flowing in between the slurry piston and the slurry cylinder, thus the life of these latters will increase.

Displacement slurry pump

Growing community of inventors

Budapest, Hungary

Janos Steiner