SU136091A1 - Instrument for the automatic determination of sulfur in metals - Google Patents

Description

Device for automatic analysis by burning a sample in a stream of oxygen according to ed. St. No. 118113 makes it possible to determine only the sulfur content in metals.

The proposed automatic device is different in that it allows determining the content of not only sulfur but also carbon from one sample of the metal under investigation.

For this, the instrument is provided with an additional capacity and a burega for storing and detecting carbon dioxide, and has a system of recording, regulating, and other devices that allow for the automatic execution of various operations necessary for carrying out the analysis. To increase the rate of the reaction of the oxidation of sulfurous acid to sulfuric acid, reduce the time of analysis and increase its accuracy in the titration vessel, partitions were installed at an angle of 8-10 ° relative to the vertical axis, not reaching the bottom of the vessel.

The drawing shows a diagram of the device.

The furnace tube (serves to burn a sample of the metal under study (0.5-1.0 g.) The cooled products are cooled in the surface cooler 2 and are cleaned in filter 3.

A hermetic vessel 4 with a partition wall located at an angle of 8-10 ° serves to titrate the solution. In the cylinder 5 there is a solution of potassium iodate, which is filled with the burette 5 and when it is established that the level of this solution is its izlischki using the siphon 7 is poured into the container 5. The cylinder 9 is filled with a solution of petroleum starch.

No. 136091-2 The acidified solution in equation box 10, which communicates with the burette and eudiometer 11, is stained with methylene blue to a concentration that ensures a clear response of the photoresistance 12. The alkaline solution from the bottle 5, filled into the burette 6, is colored by phenolphthalene to the extent that it provides the photoresistance is clearly triggered 13, without affecting the photoresistance and 14, which determines the end of the titration during the oxidation of sulfuric acid to sulfuric acid. For purification of gaseous products, an alkaline absorber 15 and washing flasks 16 are used.

In the device circuit, various purposes are used: electromagnetic taps: 17 for pouring solutions, 18 for discharging the used solution, 19 for connecting individual components of the circuit with each other, 20 for connecting nodes of the device with the atmosphere, 21 for connecting nodes of the device with an oxygen line , 22 — triggered by titration; 23 — usual two- and three-way adjustment valves, as well as safety valves 24. The resistors of soprotil-ni 25 work in conjunction with photoresistances, lighting lamps, light filters, and final lyuchatel udavnitelnoy motors 26 mi vials 10 and this decline servo drive 6. For automatic burette reacting the individual circuit units 27 are applied, fluid contacts.

Subject invention

Claims (2)

1. Instrument for automatic determination of sulfur in metals according to ed. St. No. 118113, consisting of an electric furnace for burning a sample, a surface refrigerator, a filter, a vessel with titration walls, cylinders-tanks, an eudiometer with a burette and automatic control devices, characterized in that, in order to determine carbon and sulfur from one sample, the device it is equipped with additional capacity and burette for storing and determining the volume of carbon dioxide, as well as an automatic device for recording and transmitting the results of the analysis. 2. An apparatus according to claim 1, characterized in that the non-reaching to the bottom partitions in the titration vessel are set at an angle of 8-10 ° to the vertical pl-brightness. -%. № 136091 about J7 / g 27 . 25 t 20 ,} gz: 16 IS