1.1.5 Stage of activation

The activation stage is done for the preparation of the activated magnesium-bearing alloy.

In a laboratory of department 502, ethyl spirit is absolutised, and airtight calculated quantities of ethyl spirit are loaded under nitrogen into a portable container (pos. Х-301) preliminary ventilated by nitrogen, and representing a portable vertical vessel with capacity 0,002 m³. The container is equipped by a stationary siphon and connecting pipe with a stop valve for connecting through a flexible hose the pipelines of ventilation and nitrogen.

The reactor (pos. Р-302 (Р-402)) is used in the synthesis of the magnesium-bearing alloy in "pos. Р-301 (Р-302)" for the preparation of ethanol and TEOS solutions and dispensing activating solutions in the reactor with the magnesium-bearing alloy through the pump (pos. Н-303).

In the reactor (pos. Р-302 (Р-402)) is given the calculated quantity of heptane from "pos. М-311" or a returnable washing solution from "pos. Е-304/1". The ethanol from "pos. Х-301" is passed over through a flexible hose by nitrogen in "pos. Р-302 (Р-402)"; the mixer is switched on, and the mix is mixed for not less than 5 minutes.

After executing the third washing of the magnesium-bearing alloy in a reactor (pos. Р-301 (Р-302)) the additional portion of heptane from "pos. М-311" or a returnable washing solution from "pos. Е-304/2" is loaded. The system of temperature regulation is turned on and the reactor contents, while being mixed, are thermoestablished at temperature (10-15) ^оС during 0,5 hour. Then while mixing the suspension of the magnesium-bearing alloy in the reactor (pos. Р-301 (Р-302)) from "pos. Р-302 (Р-402)" through a diaphragm dosing pump (pos. Н-303) the ethanol solution is given. Dispensing is executed at a constant temperature during 1 hour. After the dispensing termination, the suspension of the magnesium-bearing alloy is carried out at (10-15) ^оС during 0,5 hour.

In the laboratory of department 502 airtight under nitrogen in the portable container (pos. Х-302), preliminary is ventilated by nitrogen, calculated quantities of TEOT are loaded.

The container (pos. Х-302) represents a portable vertical vessel with capacity 0,007 m³, equipped a stationary siphon and a connecting pipe with a stop valve for connection through a flexible hose of pipelines ventilation and nitrogen.

In the reactor (pos. Р-302 (Р-402)) a calculated quantity of heptane is passed from "pos. М-311" or a returnable washing solution from "pos. Е-304/2". After the washing solution from "pos. Е-304/2" has been sent, the pipeline of the returnable washing solution is ventilated by nitrogen from the reactor (pos. Р-301 (Р-302, Р-402)) through bypass (pos. FQIRSAH-304, HSA-304) in "pos. Е-304/2".

TEOT from "pos. Х-301" through a flexible hose is pressed over by nitrogen in reactor (pos. Р-302 (Р-402)), the mixer is switched on, and the mix is mixed for not less than 10 minutes.

While mixing the suspension of the magnesium-bearing alloy in the reactor (pos. Р-301 (Р-302)) from the reactor (pos. Р-302 (Р-402)) through a diaphragm dosing pump the solution of TEOT is given. Dispensing is executed at the constant temperature (10-15) ^оС during 1 hour.

After the termination of dispensing the solution TEOT, the even raising of temperature, 0,3 ^оС in a minute, is executed in the reactor (pos. Р-301 (Р-302)) from (10-15) ^оС to 30 ^оС during 1 hour.

Further, the reactionary mix is maintained during 2 hours at 30 ^оС.

Then with the switched-off mixer is executed, the sedimentation of the magnesium-bearing alloy during (30-40) minutes. After the sedimentation of the suspension of the magnesium-bearing alloy and decanting the liquid phase from the reactor (pos. Р-301 (Р-302)) into collection-container (pos. Е-303), the magnesium-bearing alloy is washed once by heptane at 30 ^оС (for the washing there is used pure heptane from "pos. Е-311"). After the sedimentation of suspension the washing solution is deleted in the collection (pos. Е-304/2), also is used repeatedly for the preparation of the suspension of the magnesium-bearing alloy for activation in "pos. Р-301 (Р-302)" and preparations of activating solutions in "pos. Р-302 (Р-402)".

The possibility of removal of washing solutions from "pos. Р-301 (Р-302)" is provided through a mobile siphon a filter. In this case the sedimentation of the suspension of the magnesium-bearing alloy is not executed, the reactor mixer is switched off and the mobile siphon falls to the bottom of the reactor. After that the washing solution through a filter, which has been built in a siphon is pressed over by nitrogen in "pos. Е-303" or in "pos. Е-304/2".

The collection-container of washing solutions (pos. Е-304/2) represents a vertical cylindrical device with capacity 1 m³, intended for gathering the washing solution after washing of the activated magnesium-bearing alloy with the following return to "pos. Р-301 (Р-302, Р-402)" as a solvent for the preparation of activation solutions and preparation of suspension of the magnesium-bearing alloy at the stage of activation of the next synthesis.

The possibility of clearing of "pos. Е-304/2" through the pump (pos. Н-304) in collection-container of washing solutions on external installation is provided, and also it is possible to have the recycle of the washing solution from "pos. Е-304/2" through the pump (pos. Н-304) with return to "pos. Е-304/2".

With the synthesis of the activated magnesium-bearing alloy, only the third washing at the stage of synthesis of the magnesium-bearing alloy is used again (through the container (pos. Е-304/1) it goes on the first washing of the magnesium-bearing alloy in the next synthesis). Washing of the activated magnesium-bearing alloy is used again in the next synthesis, which is gathered in the container (pos. Е-304/2) and is used for the preparation of suspension of the magnesium-bearing alloy in the reactor (pos. Р-301 (Р-302)) at the stage of activation and preparation of ethanol and TEOT solutions in "pos. Р-302 (Р-402)".

Washing with pure heptane "pos. Е-303, Е-304/1, Е-304/2" is provided as a variation.