SU693100A1

SU693100A1 - Heater of current-conducting loose materials

Info

Publication number: SU693100A1
Application number: SU782612214A
Authority: SU
Inventors: Петр Иванович Новак; Анатолий Иванович Гришин
Original assignee: Новокузнецкий алюминиевый завод
Priority date: 1978-04-07
Filing date: 1978-04-07
Publication date: 1979-10-25

Description

II

Изобретение относитс к металлургии, к устройствам дл предварительного нагрева дисперсных материалов, в частности д-л подогрева сухих компонентов шихтьг при производстве анодной массы.The invention relates to metallurgy, to devices for preheating dispersed materials, in particular, dl heating dry components in the production of anode paste.

Известен подогреватель материалов, содержащий вертикально установленный трубчатый корпус-электрод и коаксиально установленный в нем трубчатый электрод, патрубки дл подачи и выхода материала с приемным устройством 1.A material heater is known, comprising a vertically installed tubular body-electrode and a tubular electrode coaxially mounted therein, branch pipes for supplying and exiting the material with a receiving device 1.

Недостаток известного устройства состоит в невозможности равномерного прогрева электродной массы.A disadvantage of the known device is the impossibility of uniform heating of the electrode mass.

Целью изобретени вл етс повышение равномерности прогрева материала.The aim of the invention is to improve the uniformity of heating of the material.

Это достигаетс тем, что патрубки дл подачи и выхода материала установлены соосно корпусу в верхней и нижней его част х соответственно, а электрод и корпус в верхней и нижней части выполнены конусными . При этом корпус и электрод скреплены трем радиально расположенными полыми изол торами.This is achieved by the fact that the nozzles for supplying and exiting the material are mounted coaxially with the housing in its upper and lower parts, respectively, and the electrode and the housing in the upper and lower portions are tapered. In this case, the housing and the electrode are fastened with three radially arranged hollow insulators.

На чертеже схематически изображен подогреватель , установленный под одним изThe drawing shows schematically a heater installed under one of

сортовых бункеров, обший вид с частичным вырезом стенки.varietal bunkers, general view with a partial cut of the wall.

Подогреватель имеет шиберную заслонку 1, патрубок 2 дл подачи материала, наружный разъемный цилиндрический корпус-электрод 3, переход щий на конус в верхней и нижней част х, внутренний цилиндрический электрод 4, также выполненный конусным в верхней и нижней част х . Три полые изол тора 5, токоподводы 6 (на чертеже показан один ), опорный изол тор 7, патрубок 8 дл выхода материала и приемное устройство 9.The heater has a gate valve 1, a pipe 2 for supplying material, an outer plug-in cylindrical body-electrode 3 passing to a cone in the upper and lower parts, an inner cylindrical electrode 4 also made tapered in the upper and lower parts. Three hollow insulators 5, current leads 6 (one is shown in the drawing), a supporting insulator 7, a nipple 8 for the output of the material and a receiving device 9.

Основные элементы подогревател изготовл ютс из листового металла.The main elements of the preheater are made of sheet metal.

Подогреватель работает следующим образом .The heater works as follows.

Материал, например кокс, при открытой щиберной заслонке 1 поступает из сортового бункера через патрубок 2 в кольцевое междуэлектродное пространство подогревател , равномерно заполн его, нагреваетс до заданной температуры и истекает через патрубок 8 на приемное устройство 9.The material, for example, coke, with an open spike gate 1 enters from the varietal bunker through pipe 2 into the annular inter-electrode space of the preheater, fills it evenly, heats up to a predetermined temperature and expires through pipe 8 at the receiving device 9.

Claims

Supply a single-phase current to the internal electrode 4, which is the working phase. It is realized through radially located in the middle part of the heater at an angle of 120 ° of the conductor into the inside of the insulators 5, which simultaneously act as fixers of the concentric inner electrode 4 relative to the neck to the outer housing-electrode 3, which is the phase Zero. For safety, from premature release of insulators 5, the support insulator 6 is an additional support for the inner electrode 4. Thanks to the coaxiality of the pipes 2 and 7 with electrodes 3 and 4 and the taper of the upper and lower parts of electrodes 3 and 4, the Schets ensure uniform material distribution . The proposed heater is characterized by simplicity of its design, small dimensions and weight, and low cost for its manufacture. The weight of an experienced preheater manufactured in factory workshops was 0.5 tons. . , The temperature of the material at the exit of the preheater with a capacity of from 1.5 to 2.5 t / h, respectively, from 250 to 130 ° C. The efficiency of the heater reaches 90%. All of the preheater currently used in the workshops of the anode paste to preheat the dry solids (coke) components is 11.7 tons. The material temperature at the exit of their preheaters does not exceed 90 ° C, the efficiency is 300/0. Implementation of the invention in the workshops of the anode paste aluminum industry with continuous mixers will ensure reliable and stable operation of the mixers, especially when producing anode paste on a pitch with increased softening temperature, improve the quality of the anode paste per ton of aluminum produced, reduce l power consumption. Claim 1. Preheater of conductive bulk materials, comprising a vertically installed tubular body-electrode and a tubular electrode coaxially mounted therein, branch pipes for supplying and exiting material with a receiving device, characterized in that, in order to increase the uniformity of the material, the branch pipes for supplying and the material outlet is installed coaxially with the housing in its upper and lower parts, respectively, and the electrode and housing in the upper and lower parts are made conical.

2. A heater according to claim 1, characterized in that the housing and the electrode are fastened by three radially arranged hollow insulators. The priority of clause 1 is calculated as of November 24, 2015 according to application 2192176 / 22-02. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 123258, cl. H 05 B 3/60, 1959.