SU1303626A1

SU1303626A1 - Charge for producing fluxed agglomerate

Info

Publication number: SU1303626A1
Application number: SU853978160A
Authority: SU
Inventors: Юрий Александрович Сабинин; Александр Григорьевич Жунев; Михаил Петрович Ершов; Алексей Иванович Медведев; Гавриил Алексеевич Пермяков; Валерий Александрович Морозов
Priority date: 1985-11-20
Filing date: 1985-11-20
Publication date: 1987-04-15

Abstract

) Изобретение относитс к области черной металлургии и может быть использовано при производстве агломерата . Цель изобретени - повьшение механической прочности агломерата и утилизаци отходов. Шихта дл производства агломерата содержит,мае.%: отработанный железохромовый катализатор 2-8; известн к 10-13; окалина 5-7; топливо 5,5-7; железорудна часть - остальное, В результате применени шихты возрастает механическа прочность агломерата на 1,1-1,2% и массова дол железа и хрома в агломерате на 1,41 и Os46% соответственно . 3 табл. S (ЛThe invention relates to the field of ferrous metallurgy and can be used in the production of sinter. The purpose of the invention is to increase the mechanical strength of the sinter and waste utilization. The mixture for the production of sinter contains, in May.%: Spent iron-chromium catalyst 2-8; known to 10-13; dross 5-7; fuel 5.5-7; the iron ore part is the rest. As a result of the use of the charge, the mechanical strength of the agglomerate increases by 1.1-1.2% and the mass fraction of iron and chromium in the agglomerate increases by 1.41 and Os46%, respectively. 3 tab. S (l

Description

Изобретение относитс к черной металлургии и может быть использовано при производстве агломерата.The invention relates to ferrous metallurgy and can be used in the production of sinter.

Цель изобретени - повышение механической прочности агломерата и утилизаци отходов.The purpose of the invention is to increase the mechanical strength of the agglomerate and the disposal of waste.

Железорудна часть шихты может состо ть из нескольких компонентов: аглоруды из бурых, железн ков, агло- руды из сидеритов, высевов обоженно- го сидерита, отсева агломерата, гапа- мов (собственных и привозных), отсева окатышей, концентрата и аглоруды из магнетитовых руд, колошниковой пыпи.The iron ore part of the charge may consist of several components: sinter ore from brown ore, iron ore, sideroit sinter ore, roasted siderite sowing, sinter sifting, hapam (own and imported), oat pellet sifting, concentrate and sinter ore from magnetite ores , blast furnace.

Железорудна часть может быть усреднена и отгружена в шихтовое отделение аглофабрики в виде одного компонента (смеси),The iron ore part can be averaged and shipped to the charge department of the sinter plant as a single component (mixture),

Шихта содержит отработанньш желе- зохромовый катализатор при следующем соотношении компонентов, мас„%:The mixture contains a proven iron-chromium catalyst in the following ratio of components, wt%:

йth

2-8 10-13 5-7 5,5-72-8 10-13 5-7 5.5-7

ОстальноеRest

Отработанный железохромовый катализатор представл ет собой отход производства аммиака. Он имеет благопри тный химический состав (таблЛ), характеризующийс минимальной массовой долей основных шлакообразующих. окислов (СаО, SiO, .) при высокой естественной основности 0,25, минимальной массовой долей вредный прим есей (S и Р), повьшенной массовой долей окислов железа (59,7 - 63,7%), хрома и марганца. Введение в аглошихту отработанного железохро- мового катализатора позвол ет улучшить минеральный состав агломерата и тем самым повысить механическуюThe spent iron-chromium catalyst is an ammonia waste. It has a favorable chemical composition (tabl), characterized by a minimum mass fraction of the main slag-forming agents. oxides (CaO, SiO,.) with a high natural basicity of 0.25, the minimum mass fraction of harmful primes (S and P), the increased mass fraction of iron oxides (59.7 - 63.7%), chromium and manganese. The introduction of spent iron-chromic catalyst into the agglomerate allows to improve the mineral composition of the agglomerate and thereby increase the mechanical

прочность, повысить в агломерациюstrength, increase in agglomeration

массовую долю железа, хрома и марган- сравнению с прототипом увеличиваетца и тем самым увеличить ei o металлургическую ценность, а также использовать отход производства. Введение в аглошихту отработанного железохромового катализатора не требует предварительной его подготовки, так как он представлен материалом крупностью 9-0 мм (гранул крупностью 9-5 мм - 70 мас.%, мелочи 5-0 мм - 30 мас.%),mass fraction of iron, chromium and manganite is compared with the prototype magnifier and thereby increase the ei o metallurgical value, as well as the use of production waste. The introduction of spent iron-chromium catalyst into the agglomerate does not require its preliminary preparation, since it is represented by a material with a particle size of 9-0 mm (granules with a particle size of 9-5 mm - 70 wt.%, Little things 5-0 mm - 30 wt.%),

5555

с на 1,41 % и 0,46 % соответственно . Кроме того, удельна производительность аглоустановки несколько повьшаетс (на 0,02 т/м -ч).with 1.41% and 0.46%, respectively. In addition, the specific capacity of the sintering plant increases slightly (by 0.02 t / m-h).

Claims

Invention Formula

The mixture for the production of fluxed sinter, containing iron

five

0

five

0

five

0

five

The choice of the limits of the content of components in the charge is based on experimental verification.

EXAMPLE A laboratory setup in a 0.3-meter-wide diameter was made of a series of sintering charges of several compositions under vacuum under the grate 116.44 - 139.99 kPa and a layer height of 0.475 m. The mass fraction of the age in the mixture was 22.5%. The ignition of coke in the charge was lost by a coolant with a temperature of 1273–1373 K, obtained from burning natural gas in the furnace. Prepare agglomerate was subjected to the determination of mechanical strength according to GOST 15137-77. After the drum test, an agglomerate sample was taken (according to the output of the classes) to determine the mass fraction F? -OBiu? CaO, SiO, in it.

The studies used averaged sample (a mixture of samples 1 and 2) of the spent iron-chromium catalyst.

The chemical composition of the materials to be sintered is presented in table.

The composition of the proposed proposed and known charge is given in table 2.

Comparative indicators of the process of sintering known and the proposed charge and the quality of the obtained agglomerate are given in Table 3,

Analysis table. 2 and 3 shows that the proposed mixture, as compared with the prototype, makes it possible to increase the mechanical strength of the agglomerate and its metallurgical value, as well as to utilize the spent iron-chromium catalyst.

Thus, the mechanical strength of the agglomerate at the optimum mass fraction of the ingredients of the charge (composition 3) increases in terms of X - by 1.1% (abs.), In terms of X - by 1.2% (abs.). At the same time, the mass fraction of iron and chromium in the final sinter is

55

with 1.41% and 0.46%, respectively. In addition, the specific capacity of the sintering plant increases slightly (by 0.02 t / m-h).

Invention Formula

The mixture for the production of fluxed sinter, containing iron ore, limestone, scale and fuel, characterized by TeMi, which, in order to increase the mechanical strength of the sinter and waste, it additionally contains the spent iron-chromium catalyst in the following ratio of components, wt.%:

Emeates and oxides

Ghosting Mass fraction in fuel,%; ash 15.4, moisture 9.8. Massova

a share in ashes of fuel,%: Fe 6,0; CaO 4.4; SiO 44

Total

100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0

th

2-8 10-13 5-7 5.5-7

Rest

but

Table 1

Table 2

Editor S. Lisin

. ". Iw. m. "..... m, to.".

Compiled by L.Shashenkov Tehred L.Oleinik.

Order 1279/29 Circulation 605 Subscription

VNYIPI USSR State Committee

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

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

Table 3

Proofreader M. Demchik