SU1330169A1 - Method of producing vanadium slag - Google Patents

Abstract

The invention relates to the field of ferrous metallurgy, and more specifically to methods for blowing vanadium iron in a converter. The purpose of the invention is to increase vanadium concentration in vanadium slag. The goal is achieved by introducing into the converter a complex o salt-oxidant containing iron ore and calcium or calcium magnesium-containing materials in a ratio of

Description

11330169

The invention relates to ferrous metallurgy, and in particular to methods of blowing vanadium iron in converters ..,

The purpose of the invention is to increase vanadium concentration in vanadium slag.

The essence of the invention is that instead of traditional coolers (iron ore), a complex-iO cooler-oxidizer from two components is used, which is iron ore and Ca- or Ca-Mg-containing materials, taken in the ratio (2-4); (1-1,5) .15

Experiments on blowing vanadium iron in 160-ton oxygen converters and chemically extracting a vannip from these shpaks under laboratory conditions have established that a quantitative ratio of iron ore and cap-type magnesium-containing materials is optimal, since with this ratio vanadium 2b is the most complete in compiling the smallest residual vanadium concentration in the metal — v.);

and about

then why

from ochwa in foss di. Vj neither

for the hall

at 8 in the ry shuko okil

Fo

slag with a ratio of 0.45-0.65

g g

and minimum phosphorus content. Increasing the vanadium concentration in the slag and its ratio to the iron concentration

th

they provide an increase in the productivity of chemical production of technical vanadium pentoxide, electric furnace production of ferrovanadium and vanadium master alloys, and the utilization rate of vanadium in the direct alloying of steel with vanadium slag.

Increasing the concentration of calcium oxides and magnesium allows efficient use of the donkey for the electric melt — a verter of the complex chiller — ferrovanadium oxides and master alloys with an increase in the productivity of the aggregates, a decrease in the power consumption and the duration of the melt. technical grade vanadium vanadium of higher quality. When the ratio of iron ore materials and calcium magnesium / 0 ".. p. wi. ,

holding materials (. more

h c. m. m.

50

lit. The average for 100 heats residual vanadium content in the intermediate product is 0.029%, the average annual residual vanadium content is 0.034%, i.e. higher by 0.005%

Formula

bre shadow

56

The method of semi-1np vanadium 1plaque, which includes blowing vanadium iron in the converter with an oxidizing gas and an additive to cool down the melts and intensifiers of the process of decomposition, I differ from

than

2: 1 optimum ratio is not reached

Because of the residual vanadium content in the metal, the level of metal-binding increases (see table).

It also follows from the table that if the ratio of components of the complex cooler is less than 2: 1.5, the residual vanadium content in the metal increases, the phosphorus and meta-inclusions in the slag increase, the vanadium efflux decreases in the slag, the Vj content increases. Ou in ot1z; shnykh kekakh (pi1am).

Example I, At the bottom of the converter, 4 tons of dcss were loaded onto which they were poured

wah adg; euogogo pig iron. At the beginning of the purge, 8 tons of scale were introduced into the converter. After the iron was blown for 7 years, slag was obtained, which was left in the converter for the next heat. This fusion was introduced into the converter before blowing pig iron 12 of scale. As a result of blowing, slag was obtained with a content of 19.7% with a ratio of

Fo with, 25%

OS 1D.

and

Contents V ,,

in metal

amounted to 0.02%

Example 2. 160 tons of vanadium cast iron were poured into the converter. Before the start of the purge, 2 tons of dolomite were introduced and then 10 tons of scale. After purging 8 for 8 minutes, a pitak was obtained with a content of 18.4%, 0 ,: 21.3% Ge „5ts.

with a ratio of 0.62, residual p

40

The total content of vanadium was 0.03%.

In the metal of the proposed method, 100 experimental heats were carried out with the introduction into the end 50

lit. The average for 100 heats residual vanadium content in the intermediate product is 0.029%, the average annual residual vanadium content is 0.034%, i.e. higher by 0.005%

Formula

bre shadow

56

The method of semi-1np vanadium 1plaque, which includes blowing vanadium iron in the converter with an oxidizing gas and an additive to cool down the melts and intensifiers of the process of decomposition, I differ from

. -, 13301694

in order to increase the concentration of vanadium ores and calcium or calcium magnesium in the slag, complex-containing materials are introduced into the converter in a ratio cooler consisting of iron-2-4): (1-1, 5),

Indicators of the devadation and chemical recovery of vanadium from calcium and the magnesin content of their vanadium slags with a different ratio of the components of the complex flux

 The phosphorus content in the slag.

Editor N.Kishtulinets

Compiled by A.Kahanov Tehred L.Serdyukova

Subscription

. Order 3541/27 Circulation. 549VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader A.Zimokosov

Subscription

Claims (1)

Claim A method of producing vanadium slag With a ratio of the amount of iron ore materials and calcium-magnesium-x — more c. m. than 2: 1, optimal holding materials are not achieved, including the purge of vanadium cast iron in the converter with oxidizing gas and the addition of coolers and intensifiers of the process of cevanation, which differs in that, in order to increase the concentration of vanadium in the slag, a complex cooler is introduced into the converter, consisting of iron ore and calcium- or calcium-magnesium-containing materials in the ratio of '2-4) :( 1-1.5). Indicators of devanadation and chemical extraction of vanadium from calcium and magnesium-containing vanadium slag from various levels of complex flux components Q w. m. m- V.er. . % V fe VtO _r , 2 z Inclusion metal, 1 Removed into the water <eno Y _g C acidic solution G "water .-, sour 2 sludge R\ 2 2: 0.9 0,03 0.47 16.0 24.5 9 64 24 88 2.0 0.12 2: 1,0 0.02 0.55 18.0 24.3 7 85 12. 97 1,6 0.10 2: 1,2 0.02 0.57 19.2 22.5 7 86 eleven 97 1.4 0.09 2: 1.3 0.02 0.59 19.6 24.0 Ί 89 9 98 1,0 0.08 2: 1,5 0.02 0.59 19.0 23.7 7 89 8 97 1.3 0.09 2: 1.6 0,03 0.60 19.8 23.1 9 77 fifteen 92 1.8 0, P 2: 0.9 0,03 0.48 15.0 25.6 10 60 27 87 2,5 0.12 4: 1,0 0.02 0.50 18.1 24.0 7 80 17 97 1,6 0.10 4: 1,1 0.02 0.56 18.0 23.0 7 88 eleven 98 1,0 0.08 4: 1.25 0.02 0.60 19.5 22.5 7 85 12 97 M 0.08 4: 1.4 0,03 0.58 18.5 23.1 9 80 ' fifteen 95 1,2 0.11 4: 1,5 0.04 0.50 18.5 26,4 10 77 16 93 1.4 0.13 * The phosphorus content in the slag Compiled by A. Kakhanov Editor N. Kishtulinets Tehred L. Serdyukova Corrector A. Zimokosov. Order 3541/27 Circulation 549 ’Subscription VNIIIPI of the USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and printing company, Uzhhorod, st. Project, 4