Abstract: A process for the preparation of a 2-aminobenzothiazol of the formula ( I ) ##STR1## in which R.sub.1 and R.sub.2 independently of each other are hydrogen, fluorine, chlorine, bromine or iodine, trifluoromethyl or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or nitro groups, by conversion of an arylthiourea of the formula (II) in which R.sub.1 and R.sub.2 have the meaning mentioned, which comprises carrying out the conversion in 99 to 100% strength of sulfuric acid with continuous addition of catalytic amounts of bromine, hydrogen bromide or bromide in the form of aqueous solutions and using an arylthiourea of the formula (II) which contains 1 to 35% water.

Abstract: The invention relates to an elevator, especially an inclined elevator, with a rigid runway on single poles, a load transportable between stations, a motor-driven traction element and if necessary a counterweight. It consists in principle of a single rail (1) used as a runway, said rail being a hollow-tube profile, preferably having a square profile, whose diagonal is in vertical position and in that inside the rail (1) if necessary the counterweight (8) is guided, that the load (11) to be moved and if necessary also the counterweight (8) are suspended on a circular steel chain (5) which is turned by approximately 180.degree. around a sprocket (6) connected to a drive (7).

Abstract: An ignition burner and a pilot burner form part of an ignition system for a fluidized stream of finely-divided coal particles in a pressurized gasifier housing having a slag overflow pipe coupled to a discharge vessel. A fuel supply pipe delivers fuel for combustion by the ignition burner and the pilot burner. A sparkplug or hot wire is used to ignite the fuel delivered to the ignition burner. The flame produced by the ignition burner is widened by a baffle so that ignition by the pilot burner occurs to produce a flame which is monitored through a thermocouple. The parts forming the ignition system are carried by a pair of levers with pivots on the inner wall of a slag overflow pipe for movement between an operative position wherein the ignition burner is situated near the slag-receiving opening of the overflow pipe and an inoperative position wherein the ignition burner is protected from contact by slag and radiation heating.

Abstract: Iron ore pellets on a grid in a treatment chamber are hardened by contact with a heat treated, low calorific gas. The gas is generated in the gasification chamber of a slag bath generator. The generator receives a gasification agent and solid fuel that preferably further includes sulfur-binding materials, such as dolomite for generating a stream of low calorific gas. Inclined water-cooled pipes at the upper end of the slag bath generator extract liquid slag from the gas stream. The slag drips from the pipes into the slag bath generator. A mixing chamber receives the gas at a temperature of about 1450.degree. C passed beyond the inclined water-cooled pipes together with an air supply for heat treating the gas to a temperature of about 1100.degree. C. The heat treated gas is then passed into the treatment chamber for hardening the iron ore pellets contained therein.

Abstract: Fine-grain fuel is carbonized at a low temperature by feeding the fuel from a hopper downwardly into the gap formed between two vertically-arranged, plate-type conveyors. The plates of each conveyor move downwardly while their back face surfaces bear against the wall of a heating chamber. The position of the heating chambers is controlled to maintain a narrow gap, e.g., 10-30 millimeters between the plates of the conveyors. The conveyors and heating chambers are located within a container wherein a pressure of up to 100 bars is maintained and a clear gas is passed countercurrently to the downward advancement of the fuel in the gap between the conveyors. Breaker rollers below the conveyors subdivide the carbonized fuel issuing from the gap for passage into a gasification chamber. Part of the gas yield is used as fuel for the heating chambers.