CN101985173B

CN101985173B - Steel ladle lining covering method

Info

Publication number: CN101985173B
Application number: CN2010102306827A
Authority: CN
Inventors: 侯振东
Original assignee: ZHENGZHOU ZHENDONG TECHNOLOGY Co Ltd
Current assignee: ZHENGZHOU ZHENDONG TECHNOLOGY Co Ltd
Priority date: 2010-07-20
Filing date: 2010-07-20
Publication date: 2012-05-30
Anticipated expiration: 2030-07-20
Also published as: CN101985173A

Abstract

The invention discloses a steel ladle lining covering method, which comprises the following steps: 1, selecting alumina bricks, dolomite carbon bricks, alumina magnesia carbon bricks, sintered magnesia bricks or spinel bricks as covering bricks; 2, selecting alumina magnesia pouring materials as covering materials, wherein the content of MgO in the covering materials is more than 10%, and the grain diameter is less than or equal to 5mm; 3, clearing residue steel slag and impurity on the part requiring covering of the steel ladle lining; 4, mediating the covering materials, evenly wiping the covering materials on the part requiring covering, wherein the wiping thickness is 10-20mm; 5, flat laying a layer of covering bricks from top to bottom, laterally laying a layer of covering brick on the basis of flat layering, then starting laying on end and staggering joints between the upper brick layer and the lower brick layer when layering the bricks, wiping refractory mortar on the contact surfaces of the covering bricks and the adjacent covering bricks, and laying bricks and a door according to the width after the laying is finished; and 6, closing up the upmost layer of the covering bricks, laying by using cut covering bricks according to the closing-up height, and screeding the platform between the covering bricks on the upmost layer and the steel ladle lining by using covering materials. The invention has the advantages that the matching corrosion of the whole steel ladle is realized.

Description

Ladle liner subsidizes method

Technical field

The present invention relates to steel-making and use ladle, especially relate to ladle and subsidize method

Background technology

Ladle is the important Thermal Equipment of steel mill, and the selection of tympaning is most important, and its life-span length not only is related to the consumption and the steel-making cost of refractory material, and directly influences the output and the quality of steel.Therefore prolong ladle lining life is focus over the years always.Ladle liner adopts high-alumina brick, magnesia carbon brick, aluminium-magnesia carbon brick, sintered magnesia brick, AluminaSpinel Bricks etc. more at present.Ladle because the stream (stirring) of molten steel and slag is moving, often makes that the ladle liner erosion is inhomogeneous and cause ladle to scrap in use.Cause the above-mentioned reason of scrapping can not use institute to cause by the weakest place of liner often, and this moment, most of position still had more than neededly very greatly, this just causes a large amount of wastes of resource.From the angle of sustainable development, should make ladle liner keep deteriorating synchronously, this will carry out Local treatment to ladle liner.

Summary of the invention

The object of the invention is to provide a kind of ladle liner that prolongs ladle service life to subsidize method.

For realizing above-mentioned purpose, the present invention can take following technical proposals:

Ladle liner of the present invention subsidizes method, is undertaken by following step:

The first step, select for use the existing employed high-alumina brick of ladle, magnesia carbon brick, aluminium-magnesia carbon brick, sintered magnesia brick or AluminaSpinel Bricks as supplement brick;

Second step, to select alumina-magnesia castable for use be supplement, and the MgO content of said supplement is greater than 10%, particle≤5mm;

The 3rd step, remaining slag, the contaminant removal that at first ladle liner need be subsidized the position fall;

The 4th step, be in harmonious proportion said supplement, supplement evenly be put on need subsidize the position, smearing thickness is 10-20mm, and is floating then;

The 5th step, earlier flat one deck supplement brick of building are from bottom to top then built basic upside and are built one deck supplement brick flat, begin the laid on end supplement brick then, the fissure of displacement between the brick layer up and down when building by laying bricks or stones; In the building process on every supplement brick and adjacent supplement brick contact-making surface the thick fire clay of trowelling one deck 0.5-1.5mm; Every layer of clip when building end by laying bricks or stones and door according to width;

The superiors of the 6th step, supplement brick close up, and build by laying bricks or stones according to the supplement brick that usefulness highly of closing up is cut open, get final product the platform between this layer supplement brick and the ladle liner is floating with supplement then.

The invention has the advantages that and take the method for subsidizing that the ladle of scrapping that deteriorates because of the part is repaired; Through select for use MgO content greater than 10%, the alumina-magnesia castable of particle≤5mm is supplement; Take flat earlier one deck supplement brick of building from bottom to top; Then build one deck supplement brick, carry out the technological means of laid on end supplement brick then, realized that the coupling of whole ladle corrodes at the basic upside of flat block.Ladle after repairing still can use more than 15 times, has not only prolonged the service life of ladle, has practiced thrift resource, the ladle liner that do not deteriorate is fully utilized, and greatly reduces the operating cost of ladle.

Description of drawings

Fig. 1 is to the ladle liner part structural representation of position after implementing to subsidize that deteriorate according to the inventive method.

The specific embodiment

As shown in the figure, ladle liner of the present invention subsidizes method, is undertaken by following step:

Second step, to select alumina-magnesia castable for use be supplement 1, and the MgO content of said supplement 1 is greater than 10%, particle≤5mm;

The 3rd step, remaining slag, the contaminant removal that at first ladle liner need be subsidized position 2 fall;

The 4th step, the said supplement 1 that is in harmonious proportion evenly are put on supplement 1 and need subsidize position 2, and smearing thickness is 10-20mm, and is floating then;

The 5th step, the earlier flat one deck supplement brick 3 of building are from bottom to top then built basic upside and are built one deck supplement brick 4 flat, begin laid on end supplement brick 5 then, the fissure of displacement between the brick layer up and down when building by laying bricks or stones; In the building process on every supplement brick and adjacent supplement brick contact-making surface the thick fire clay of trowelling one deck 0.5-1.5mm; Build by laying bricks or stones when finishing according to width clip and door for every layer.Said fire clay is claimed chamotte again; Be often referred to fire clay and cooperate the mixed powder that forms with grog (or refuse clay brick); Grog can a part or is all used replacements such as sand, silica, calcilutite; Sometimes add low amounts of water glass and make adhesive, the building kiln is as the cementing material of building schamotte brick by laying bricks or stones.

The superiors of the 6th step, supplement brick close up, and build by laying bricks or stones according to the supplement brick 6 that usefulness highly of closing up is cut open, get final product the platform between this layer supplement brick and the ladle liner is floating with supplement 1 then.

Claims

1. a ladle liner subsidizes method, it is characterized in that: undertaken by following step:

Second step, to select alumina-magnesia castable for use be supplement (1), and the MgO content of said supplement (1) is greater than 10%, particle≤5mm;

The 3rd step, remaining slag, the contaminant removal that at first ladle liner need be subsidized position (2) fall;

The 4th step, be in harmonious proportion said supplement (1), supplement (1) evenly be put on subsidize position (2), smearing thickness is 10-20mm, and is floating then;

The 5th step, the earlier flat one deck supplement brick (3) of building are from bottom to top then built basic upside and are built one deck supplement brick (4) flat, begin laid on end supplement brick (5) then, the fissure of displacement between the brick layer up and down when building by laying bricks or stones; In the building process on every supplement brick and adjacent supplement brick contact-making surface the thick fire clay of trowelling one deck 0.5-1.5mm; Build by laying bricks or stones when finishing for every layer and close door according to the width clip;

The superiors of the 6th step, supplement brick close up, and build by laying bricks or stones according to the supplement brick (6) that usefulness highly of closing up is cut open, use supplement (1) to get final product the platform between this layer supplement brick and the ladle liner is floating then.