RU1559742C - Method of extracting vanadium from vanadium-containing raw materials - Google Patents

Abstract

The invention relates to methods for extracting vanadium from products (and waste) of oil refining and other industries. The purpose of the invention is to increase the recovery of vanadium from coke obtained from tar rock. The method of extracting vanadium into vanadium-containing raw materials involves processing with the decomposition of the feedstock with argon plasma a high-frequency capacitive discharge with a power of 2-2.7 kW at a pressure in the reactor of 265 Pa and a rock flow rate of 0.5-0.8 g / s and when the target is bombarded with decomposition products . 1 tab.

Description

The invention relates to methods for drawing vanadium from refined products (and waste) and can be used in the metallurgical, refining and other industries.

It is an object of the invention to increase the recovery of vanadium from coke obtained from bituminous rock.

Example. A high frequency plasmatron is connected to a vacuum unit in which the target is located. The target is made of steel 20 material to eliminate the influence of alloying additives on the purity of the experiment. Pumping out of the vacuum unit is carried out by a pumping system. The electrodes of the RF plasma torch are connected to the RF generator. Pre-crushed coke obtained from natural bitumen from the Gorskoye deposit in Tatarstan is poured into a feed device through which it is fed to a device

argon. After pumping out of the vacuum unit and the discharge chamber of the plasma torch and opening the coke valve in a quartz glass, it swells and is discharged by argon into the discharge zone, where coke decomposition occurs. The decomposition products are then removed from the discharge chamber by a plasma stream and bombard the target, whereby vanadium in the form of a film is deposited on the target. In order to clean the surface of the target from impurities, a final cleaning of the target in an argon plasma jet is carried out.

The power of the high frequency capacitive discharge is Wp 2 kW; coke consumption Gx 0.5 g / s; the pressure in the reactor is P 265 Pa; SAG plasma gas flow rate 0.04 g / s; the vanadium content in coke tg 0.3 wt.%. Energy costs for the process itself are: q, 1.2 kWh / kg, at Wp 2 kW, GK 0.8 g / s, P (L

WITH

ate ate

4

ГОь GO

265Pe, SAG -0.04 r / s, mr 0.3 May.%. Q- 1.25 kWh / kg,

In all the examples cited, vanadium recovery is 100%, and 80-90% by vanadium recovery method.

The table shows data on the degree of extraction of vanadium from coke (in%) on process parameters.

Claims (1)

The claims A method of extracting vanadium from vanadium-containing raw materials, comprising  argon plasma, characterized in that, in order to increase the degree of extraction of vanadium from coke obtained from bituminous rock, processing with decomposition of the feedstock is carried out by high-frequency capacitive discharge plasma with a power of 2-2.7 kW at a reactor pressure of 265 Pa, and a flow rate of 0.5-0.8 g / s and when the target is bombarded with decomposition products.