SU1696829A1 - Container for carbon samples firing - Google Patents

Abstract

The invention relates to the construction of containers used in the processes of heat treatment of graphite products. The purpose of the invention is to increase productivity by combining the processes of unloading and cleaning. The container contains a cylindrical body 1 with stops placed along its ends, a lid 2 and a bottom 3 installed in the body with the possibility of longitudinal movement and made with pointed edges along its perimeter. Such an installation of the bottom with the possibility of movement ensures m. Arrangement of unloading the container, and the implementation of the bottom with pointed edges along its perimeter also makes it possible to combine the processes of unloading and cleaning. 2 Il.

Description

4W

 L

I

/ - dosypka

1

s

fe

Zagotobka

O h)

0

00

Yu

45

shaft schA

edge

The invention relates to the design of containers used in heat treatment processes for carbon and graphite products, in particular electrode blanks for electrometallurgical furnaces, and can be used in the electrode, electro carbon, chemical, metallurgical, building materials industries.

A known container construction for firing electrode blanks, comprising a cylindrical body and a lid made of a heat-resistant material.

Thermal processing of the electrode blanks in this container is performed as follows.

The carbonaceous material is poured down the bottom of the body with a layer with a thickness of 100-150 mm, on which the electrode blank is placed vertically.

After the annular gap is filled between the preform and the inner wall of the container, the container is closed with a lid and installed in a thermal unit, for example, in a chamber furnace.

In the process of heating the electrode blanks inside the containers, volatile pyrolysis resinous substances are released from them, contributing to the clogging of the backfill to the inner surface of the container walls and to the blank. As a result, at the end of heat treatment, the extraction of the electrode blank from the container is extremely difficult, and the container itself, after unloading, requires cleaning the internal cavity.

The operation of cleaning the container from the primed filling is very laborious due to the large height of the container and is performed manually.

The task of simplifying the loading and unloading of electrode blanks is solved by using a known container according to the author. St. Ns 821893, Cl, F 27 D 3/12, Zl. 03.30.79, publ. 04/15/81 (prototype).

A container for heat treatment of carbon blanks is known, which contains an inner tube and an outer tube concentrically with it, connected by an annular bottom. The outer tube consists of two detachable parts, which facilitates the loading and unloading of the container.

The disadvantage of the known container is the lack of mechanization of unloading and loading the electrode blanks, as well as the need to clean the container walls of the transfer unit as an additional operation.

In addition, as a result of warping the casing due to the high temperatures and pressure generated by the blanks during the firing of the billet gases, the joining of the upper and lower parts of the outer tube is difficult.

The aim of the invention is to increase productivity by combining the process of unloading and cleaning.

0 The heat treatment container contains a cylindrical body, a lid and an annular bottom. In contrast to the known containers, the bottom of the proposed container is made movable with possible movement along the longitudinal axis of the container and provided with a cleaning edge located around the perimeter of the bottom.

Figure 1 shows the container, the general view; Fig 2 is a scheme for unloading blanks and

0 container cleaning.

The container contains a cylindrical body 1 with stops, a lid 2 and a bottom 3. The bottom 3 of the container, made movable, is mounted on the stops made 5 in the lower part of the container body. Along the perimeter of the bottom 3 there is an edge located at an acute angle to the inner walls of the housing 1.

The container is loaded in a similar way to loading a known container,

The container with the fired electrode blank 4 is placed on the tilter 5 and is placed in a horizontal position. The turntable 5 platform has

5 the opening for the passage of the moving reciprocating rod in the pusher (not shown), by means of which the bottom 3 of the container is moved along its longitudinal axis to the stops 7 installed

0 on the inner walls in the upper part of the housing 1. As a result, the workpiece and backfilling are pushed out, and when the edge at the bottom of the container interacts with the inner walls of the housing 1

5, they are cleaned from coking during firing of the overfilling.

By providing the possibility of introducing mechanized unloading, as well as combining the unloading operation with

By cleaning the inner surface of the container of the proposed design, the productivity increases approximately 2 times.

As the long-term operation shows, cylindrical containers are practically not subject to warping due to the uniform distribution of stresses along the perimeter of circular cross section. The bottom of the proposed container with a cleaning edge is made with a constant gap

between the wall of the container, equal to 6-8 mm per diameter. The operation of cleaning the inner surface of the firing container does not provide for cleaning the walls to the metal. After cleaning, a layer of coked overfill, the thickness of which is determined by the annular gap between the movable bottom and the inner surface of the container, is allowed on the inner surface of the container. This layer not only does not prevent further use of the container, but is a protective layer that protects the metal from burnout.

Thus, the use of the proposed container allows to mechanize the operations of unloading and cleaning

k4

Editor O. Khripta

Compiled by V. Laptev Tehred M. Morgenthal

container and combine them in time, which significantly reduces the complexity of these operations, increases productivity when unloading and cleaning containers, increases the service life of the container.

Claims (1)

Claims The container for firing carbon blanks, comprising a cylindrical body and a bottom, characterized in that, in order to increase productivity by combining the process of unloading and cleaning, the body is made with stops placed along its ends, and the bottom is installed in the body with the possibility of longitudinal movement and made with pointed edges along its perimeter. fig 2 Proofreader A. Osaulenko