CN101985170A

CN101985170A - Method for laying bottom of prefabricated block ladle by using small building blocks

Info

Publication number: CN101985170A
Application number: CN 201010230654
Authority: CN
Inventors: 侯振东
Original assignee: ZHENGZHOU ZHENDONG ABRASIVE MATERLS CO Ltd
Current assignee: ZHENGZHOU ZHENDONG ABRASIVE MATERLS CO Ltd
Priority date: 2010-07-20
Filing date: 2010-07-20
Publication date: 2011-03-16

Abstract

The invention discloses a method for laying the bottom of a prefabricated block ladle by using small building blocks. The method comprises the following steps of: vertically laying the bottom with small upright prefabricated blocks after an inner lining of the wall of the ladle is laid; reserving a gap of 40 to 50mm between the periphery of the bottom and the wall; and filling the gap with corundum-spinel castable and laying two layers of bricks along an annular joint of the bottom and the wall after the bottom is laid. The method has the advantages that: 1, the upright small prefabricated blocks are fired at high temperature, have high strength and low residual moisture, are suitable for rapid baking and quicken the turnover of the ladle; 2, because the bottom of the ladle is formed by laying a plurality of upright small fabricated blocks, the thermal stress can be uniformly dispersed during use and the bottom of the ladle has high high-temperature volumetric stability; 3, a comprehensive laying process is flexibly used to prolong the comprehensive ladle life of the ladle; 4, the bottom of the ladle is convenient to disassemble and maintain, and partial maintenance or replacement is realized; and 5, the use safety of the ladle is improved and a steel drilling accident of the bottom is prevented.

Description

Adopt the method for little building block at the bottom of the prefabricated section ladle bag

Technical field

The present invention relates to be used for the ladle of converter, especially relate to the method that adopts little building block at the bottom of the prefabricated section ladle bag.

Background technology

Routine is used for the prefabricated section ladle of converter, integrated poured, large scale prefabricated or large scale prefabricated method that combines with cast of its general employing in bag end.There is following outstanding problem in said method: 1, large scale prefabricated single-piece weight is big, and surface area is big, and volumetric expansion that produces in baking and use and contraction concentrate on around the prefabricated section; After repeatedly using, easily produce big thermal stress at periphery, easily make peripheral refractory material fall piece and come off.2, peripheral corundum spinelle waters material feeding owing to add water at the scene and mix, and there is bigger performance difference in the prefabricated component of crossing with the refractory factory high-temperature baking, and the coefficient of expansion and water content are inconsistent, is difficult to reach the basically identical of performance at the bottom of the whole bag in the bake process.3, large scale prefabricated periphery uses corundum pouring material in a large number, is subject to factor affecting such as on-the-spot temperature, execution conditions, baking, goods resting period; 5, the ladle baking time long, be unfavorable for ladle turnover; What is more important, the prefabricated section baking needs the rational heating curve of control, could guarantee that implosion does not appear in goods in baking; Cause goods crackle to occur but in the bake process of production scene, often can't accurately control, occur explosion when serious, safety in production is threatened big because of baking temperature.6, ladle remove, difficult in maintenance, can not locally safeguard or change, workman's labour intensity of constructing is big.

Summary of the invention

Adopt the method for little building block at the bottom of the prefabricated section ladle bag that the object of the present invention is to provide long service life at the bottom of a kind of ladle bag, is easy to safeguard.

For achieving the above object, the present invention can take following technical proposals:

Adopt the method for little building block at the bottom of the prefabricated section ladle bag of the present invention, after the ladle wall liner finished building, the little prefabricated section laid on end of keeping straight on was adopted at the bag end; Reserve the gap of 40mm-50mm between bag bottom perimeter and the bag wall, adopt corundum spinelle to water material feeding and fill, the bag end, finishes building the back and builds two-layer brick along the bag end with the girth joint of wrapping wall and get final product.

The cuboid refractory brick that the little prefabricated section of described craspedodrome is made for the corundum spinelle material, its length is of a size of: 200-400mm, 200-400,80-200mm.

The present invention is because the mode that the little prefabricated section of taking at the bottom of the firm bag bag to keep straight on is built by laying bricks or stones, so its advantage is mainly reflected in following several respects:

1, the little prefabricated section of described craspedodrome burns till through high temperature, the intensity height, and residual moisture is little, is suitable for quick baking, has accelerated the turnover of ladle;

2, owing to adopt the polylith little prefabricated section of keeping straight on to be built at the bottom of the ladle bag, so the thermal stress in the use can evenly disperse, and has the good high-temperature volume stability at the bottom of making the ladle bag;

3, can adopt integrated masonry technology flexibly, thereby improve the comprehensive suite age of ladle;

4, the dismounting at the bottom of the ladle bag, easy to maintenance has realized local maintenance or replacing;

5, improve the safety in utilization of ladle, stopped the generation of bag subdrilling steel accident.

Description of drawings

Fig. 1 is the ladle structure of ladle bottom schematic diagram of building by laying bricks or stones according to the inventive method.

The specific embodiment

As shown in the figure, adopt the method for little building block at the bottom of the prefabricated section ladle bag of the present invention, be ladle wall liner 1 build by laying bricks or stones finish after, the bag end little prefabricated section 2 of adopt keeping straight on carries out laid on end; The cuboid refractory brick that the little prefabricated section 2 of described craspedodrome adopts existing corundum spinelle material to make, its length is of a size of: 300mm, 250mm, 100mm.When building by laying bricks or stones, reserve the gap of 40mm-50mm between bag bottom perimeter and the bag wall, adopt corundum spinelle to water material feeding 3 in the gap in and fill, build by laying bricks or stones and finish the edge, back and wrap the end and wrap the girth joint that forms between the wall and build two-layer corundum spinelle refractory brick 4 by laying bricks or stones and get final product at the bag end.

Claims

1. adopt the method for little building block at the bottom of the prefabricated section ladle bag, it is characterized in that: after ladle wall liner (1) finished building, little prefabricated section (2) laid on end of keeping straight on was adopted at the bag end; Reserve the gap of 40mm-50mm between bag bottom perimeter and the bag wall, adopt corundum spinelle to water material feeding (3) and fill, the bag end, finishes building the back and builds two-layer brick (4) along the bag end with the girth joint of wrapping wall and get final product.

2. according to the method that adopts little building block at the bottom of the right 1 described prefabricated section ladle bag, it is characterized in that: the cuboid refractory brick that the little prefabricated section of described craspedodrome (2) is made for the corundum spinelle material, its length is of a size of: 200-400mm, 200-400,80-200mm.