RU1630239C - Method of melted refractory materials producing - Google Patents

Method of melted refractory materials producing Download PDF

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Publication number
RU1630239C
RU1630239C SU4730432A RU1630239C RU 1630239 C RU1630239 C RU 1630239C SU 4730432 A SU4730432 A SU 4730432A RU 1630239 C RU1630239 C RU 1630239C
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RU
Russia
Prior art keywords
furnace
refractory materials
rotation
bath
melting
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Russian (ru)
Inventor
В.В. Загнойко
Б.П. Александров
В.Н. Коптелов
О.И. Фролов
А.А. Власовец
М.М. Соболь
В.П. Кучеренко
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Комбинат "Магнезит"
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Priority to SU4730432 priority Critical patent/RU1630239C/en
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Publication of RU1630239C publication Critical patent/RU1630239C/en

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Abstract

FIELD: refractory materials. SUBSTANCE: method involves preparation of charge, its melting in electric arc furnace with bath rotating reversely at the rate 15-80 degree/h at the angle 90-120 degree. This rotation is begun at the instant of 0.2-0.6 of the total melt time. Output of furnace is 280-320 kg/h, specific energy consumption is 3000-3400 kw x h/t. EFFECT: increased output of furnace, diminished energy consumption. 1 tbl

Description

Изобретение относится к производству в электродуговых печах плавленых материалов, используемых для производства огнеупоров. The invention relates to the production of fused materials in electric arc furnaces used for the production of refractories.

Целью изобретения является повышение производительности печи и снижение удельных энергозатрат. The aim of the invention is to increase the productivity of the furnace and reduce specific energy consumption.

Получение плавленых огнеупорных материалов проводили на печи с диаметрами: электродов - 400 мм; распада электродов - 860 мм; ванны печи - 2800 мм. Obtaining fused refractory materials was carried out on a furnace with diameters of: electrodes - 400 mm; electrode decay - 860 mm; furnace baths - 2800 mm.

Основные параметры процесса плавки: напряжение на электродах 89-105 В; сила тока 6,6-8,0 кА, время плавки - 20 ч. В качестве исходных материалов использовали брусит или магнезит для получения периклаза и смесь магнезита с хромконцентратом в соотношении 4:1 для получения периклазохромита. Независимо от используемого материала показатели плавок определялись скоростью вращения ванны, углом поворота и временем начала вращения. The main parameters of the melting process: voltage at the electrodes 89-105 V; current 6.6-8.0 kA, melting time - 20 hours. Brucite or magnesite was used as starting materials to produce periclase and a mixture of magnesite with chromium concentrate in a ratio of 4: 1 to obtain periclase-chromite. Regardless of the material used, the melt indices were determined by the rotation speed of the bath, the rotation angle and the time of the start of rotation.

Процесс плавки начинали с розжига, который проводили на максимальном напряжении (105 В). Когда сила тока достигала номинального значения (6,6-8,0 кА), включали требуемое напряжение (89-105 В). The melting process began with ignition, which was carried out at maximum voltage (105 V). When the current reached the nominal value (6.6-8.0 kA), the required voltage (89-105 V) was turned on.

Загрузку шихты осуществляли порциями по 300-900 кг на каждый электрод через 60-120 мин таким образом, чтобы слой шихты над расплавом составлял 200-400 мм. The charge was loaded in batches of 300–900 kg per electrode after 60–120 min so that the charge layer above the melt was 200–400 mm.

Через определенное время от начала плавки включали реверсивное вращение с определенной скоростью на заданный угол поворота. After a certain time from the start of melting, reverse rotation was turned on at a certain speed by a given angle of rotation.

По окончании процесса плавки выключали вращение ванны и напряжение, электроды поднимали и ванну выкатывали на площадку для остывания. Через 70-100 ч остывания блок разбивали, отбирали плавленый материал и взвешивали его. At the end of the melting process, the rotation of the bath and the voltage were turned off, the electrodes were lifted, and the bath was rolled out onto the cooling pad. After 70-100 hours of cooling, the block was broken, the fused material was taken and weighed.

По полученным данным определяли основные показатели процесса плавки. According to the data obtained, the main indicators of the smelting process were determined.

Результаты опытных плавок магнезита при различных скоростях вращения, углах поворота и моментах начала вращения приведены в таблице. Во всех случаях время плавки составляло 20 ч. The results of the experimental melts of magnesite at various speeds of rotation, angles of rotation and the moments of the start of rotation are given in the table. In all cases, the melting time was 20 hours.

Claims (1)

СПОСОБ ПОЛУЧЕНИЯ ПЛАВЛЕНЫХ ОГНЕУПОРНЫХ МАТЕРИАЛОВ путем подготовки шихты, ее плавления в электродуговой печи с вращающейся ванной и охлаждения наплавленного блока, отличающийся тем, что, с целью повышения производительности печи и снижения удельных энергозатрат, ванну вращают реверсивно со скоростью 15 - 80 град/ч на угол 90 - 120o, при этом вращение ванны начинают в момент времени, составляющий 0,2 - 0,6 от общего времени плавки.METHOD FOR PRODUCING FLOATED REFRACTORY MATERIALS by preparing the charge, melting it in an electric arc furnace with a rotating bath and cooling the deposited block, characterized in that, in order to increase the furnace productivity and reduce specific energy consumption, the bath is rotated reversely at a speed of 15 - 80 deg / h 90 - 120 o , while the rotation of the bath begins at a point in time, comprising 0.2 - 0.6 of the total melting time.
SU4730432 1989-08-22 1989-08-22 Method of melted refractory materials producing RU1630239C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU4730432 RU1630239C (en) 1989-08-22 1989-08-22 Method of melted refractory materials producing

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Application Number Priority Date Filing Date Title
SU4730432 RU1630239C (en) 1989-08-22 1989-08-22 Method of melted refractory materials producing

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RU1630239C true RU1630239C (en) 1994-10-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2595120C1 (en) * 2015-06-17 2016-08-20 Общество С Ограниченной Ответственностью "Группа "Магнезит" Method of thermomechanical enrichment of magnesite in indirect heating furnaces

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР N 1431286, кл. C 04B 35/62, 1987. *
Авторское свидетельство СССР N 800168, кл. C 04B 35/60, 1978. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2595120C1 (en) * 2015-06-17 2016-08-20 Общество С Ограниченной Ответственностью "Группа "Магнезит" Method of thermomechanical enrichment of magnesite in indirect heating furnaces

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