JPH0920567A - Refractory mortar - Google Patents
Refractory mortarInfo
- Publication number
- JPH0920567A JPH0920567A JP7184980A JP18498095A JPH0920567A JP H0920567 A JPH0920567 A JP H0920567A JP 7184980 A JP7184980 A JP 7184980A JP 18498095 A JP18498095 A JP 18498095A JP H0920567 A JPH0920567 A JP H0920567A
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- brick
- magnesia
- zircon
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Ceramic Products (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は溶融金属を保持あるいは
精錬する窯炉等の内張りに使用される耐火れんがを築造
する際に使用されるモルタルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mortar used for constructing a refractory brick used as an inner lining for a kiln for holding or refining molten metal.
【０００２】[0002]
【従来の技術】溶融金属あるいはセメント、ガラスな
ど、高温状態の物質を扱う各種の産業においては、その
搬送あるいは精錬等の処理を行う窯炉の内張りとして耐
火物が使用されている。耐火物は事前に成形されたれん
がと、不定形耐火物に大別される。れんがは不定形耐火
物と比較して高耐用性を有するため、より苛酷な操業条
件で使用される場合が多い。2. Description of the Related Art In various industries that handle high temperature substances such as molten metal, cement, and glass, refractory materials are used as the lining of kilns for carrying or processing refining. Refractories are roughly classified into preformed bricks and irregular refractories. Brick has a high durability compared to amorphous refractories and is often used under more severe operating conditions.
【０００３】れんがの築造の際には、その間の目地に注
意を払わなければならない。目地の種類はモルタル目地
と空目地に大別でき、窯炉の種類や操業条件によって使
い分けられる。モルタル目地の場合、使用する耐火モル
タル（以下簡単にモルタルと呼ぶ）の材質を慎重に選択
しなければならない。すなわち十分な耐火度を有し、溶
湯あるいはスラグによる侵食がなく、築造されるれんが
と反応を起こさないことなどに注意しなければならな
い。When building a brick, attention must be paid to the joints between them. The types of joints can be roughly classified into mortar joints and empty joints, and they are used properly depending on the type of kiln and operating conditions. In the case of mortar joints, the material of the refractory mortar to be used (hereinafter simply referred to as mortar) must be carefully selected. That is, it should be noted that it has a sufficient refractory level, is not eroded by molten metal or slag, and does not react with the bricks to be built.
【０００４】モルタルには大きくわけて三つの機能があ
る。第一は接着剤としてれんがとれんがを接合し、れん
が構造体全体を安定させること、第二は溶湯やスラグの
目地への侵入を抑えること、そして第三はモルタル材自
身がつぶれることでれんがの膨張分を吸収し、れんが構
造全体を安定させることである。Mortar has three main functions. The first is to bond bricks and bricks as an adhesive to stabilize the entire brick structure, the second is to prevent the intrusion of molten metal and slag into the joints, and the third is the mortar material itself to be crushed to make bricks. It absorbs expansion and stabilizes the entire brick structure.
【０００５】ところで、マグネシアを主成分とする塩基
性れんがは、マグネシア自体の膨張係数が大きいため、
れんがの膨張係数も一般に大きい。従って塩基性れんが
を使用して窯炉を内張りする場合、れんがの膨張による
変形を何らかの方法で吸収しないと、れんが構造体全体
が不安定になる。その結果、特定の部位に応力が集中し
たり、あるいは拘束力がなくなることで、れんが同士が
せり割れたり、抜け落ちたりする場合がある。By the way, the basic brick containing magnesia as a main component has a large expansion coefficient, so that
The expansion coefficient of bricks is also generally large. Therefore, when a basic brick is used to line a kiln, the entire brick structure becomes unstable unless the deformation due to the expansion of the brick is absorbed by some method. As a result, the stress may be concentrated on a specific part, or the binding force may be lost, so that the bricks may crack or fall off.
【０００６】前述のように、モルタルの機能の一つは自
身がつぶれてれんがの膨張分を吸収することである。塩
基性れんがからなる内張りの場合も、モルタルはつぶ
れ、れんがの膨張分を吸収する。塩基性れんがの築造に
通常使用されるマグネシアを主成分としたモルタルは、
３０〜６０％程度つぶれる。すなわち３０〜６０％程度
の可縮性を有する。膨張係数の大きなれんがを使用し、
目地の数が少なく、しかも目地厚が薄いと、モルタルが
つぶれる分だけではれんがの膨張を吸収し切れず、れん
が構造体全体が不安定になる。As described above, one of the functions of the mortar is to crush itself and absorb the expansion of the brick. Even with a lining made of basic bricks, the mortar also collapses and absorbs the swelling of bricks. Mortar mainly composed of magnesia, which is usually used for building basic bricks,
Collapse about 30-60%. That is, it has a shrinkability of about 30 to 60%. Use a brick with a large expansion coefficient,
If the number of joints is small and the joint thickness is thin, the expansion of the brick cannot be absorbed only by the crushing of the mortar, and the entire brick structure becomes unstable.
【０００７】通常はこのような問題を避けるため、目地
の数あるいは厚さを調整する。しかし、従来のマグネシ
アモルタルには、スラグが侵入しやすく、侵食を被りや
すい欠点があり、操業条件の厳しい窯炉の内張りでは、
損耗しやすいモルタル目地の数と厚さを減じる必要があ
る。そのため、れんが構造体全体の安定性と目地の損耗
防止の二つの課題を同時に解決することができなかっ
た。塩基性モルタルについては特開昭５７−２７９７８
号公報や特開平３−７５２７５号公報などの発明がある
が、いずれもモルタルの可縮性と耐用性を両立させるも
のではない。Usually, in order to avoid such a problem, the number or thickness of joints is adjusted. However, conventional magnesia mortar has the drawback that slag is easy to invade and is susceptible to erosion, and in the kiln lining under severe operating conditions,
It is necessary to reduce the number and thickness of mortar joints that are prone to wear. Therefore, it was not possible to simultaneously solve the two problems of stability of the brick structure as a whole and prevention of wear of joints. As for the basic mortar, JP-A-57-27978
Although there are inventions such as Japanese Patent Laid-Open No. 3-75275 and Japanese Patent Laid-Open No. 3-75275, none of them makes the mortar shrinkable and durable at the same time.
【０００８】[0008]
【発明が解決しようとする課題】れんがからなる窯炉の
内張りの寿命を延長するためには、れんが構造体全体を
安定させ、なおかつモルタル目地の損耗を抑制しなけれ
ばならない。本発明の目的は、従来両立困難であったこ
の二つの問題を解決するモルタル材を提供することにあ
る。In order to extend the life of the lining of a kiln made of bricks, it is necessary to stabilize the entire brick structure and suppress the wear of mortar joints. An object of the present invention is to provide a mortar material that solves these two problems that have been difficult to achieve at the same time.
【０００９】[0009]
【課題を解決するための手段】この課題を解決するため
に研究を重ねた結果、本発明を得た。すなわち、ジルコ
ン（ＺｒＳｉＯ4） と酸化チタンのうちのどちらか一方
あるいは両者を合計で０．１〜４０重量％含み、残部が
マグネシアと２０重量％以下の他の耐火材とからなる耐
火モルタルである。As a result of repeated studies for solving this problem, the present invention has been obtained. That is, it is a refractory mortar containing one or both of zircon (ZrSiO 4 ) and titanium oxide in a total amount of 0.1 to 40% by weight, and the balance being magnesia and other refractory material of 20% by weight or less. .
【００１０】[0010]
【作用】根本的な問題は従来のモルタルの可縮性にあ
る。モルタルがより高い可縮性を有していれば、目地数
が少なくかつ薄くても、れんがの膨張を吸収できるはず
である。しかし単純に可縮性の大きいモルタルを使用し
ても意味はない。なぜならば、目地が至るところでつぶ
れるため、かえってれんが構造体を不安定にするだけで
ある。本発明になるモルタルは、れんが膨張の起こる部
位のみが可縮性を有するため、れんが構造体全体を安定
させることができる。以下、その作用を詳細に説明す
る。Function: The fundamental problem is the contractibility of conventional mortar. If the mortar has a higher contractibility, it should be able to absorb the expansion of the brick even if it has a small number of joints and is thin. However, there is no point in simply using a highly compressible mortar. Because the joints collapse everywhere, only making the brick structure unstable. In the mortar according to the present invention, only the site where the brick expands has the contractibility, so that the entire brick structure can be stabilized. The operation will be described in detail below.
【００１１】使用中の内張りれんが１の内部には、受熱
面である稼働面から外側の背面にかけて温度勾配があ
る。すなわち稼働面側では温度が高く、背面側では低
い。れんがの膨張は温度が高いほど大きいので、稼働面
に近い部分ほど膨張する。Inside the lining brick 1 in use, there is a temperature gradient from the working surface which is the heat receiving surface to the outer rear surface. That is, the temperature is high on the working surface side and low on the back surface side. The higher the temperature, the greater the expansion of bricks, so the closer they are to the working surface, the more they expand.
【００１２】れんが構造体として、図１のようにれんが
を単純に並べた直線壁を想定する。このとき、稼働面側
が膨張するので、空目地の場合、図２に示すように、構
造体が稼働面側に凸に反ることになる。また、従来のモ
ルタル２を使用した場合、稼働面側でモルタルが少しつ
ぶれるため、図３に示すように、れんがの稼働面近傍の
膨張が幾分緩和され、反りは若干小さくなる。しかし、
十分ではなく、依然として反りが存在する。As a brick structure, a straight wall in which bricks are simply arranged as shown in FIG. 1 is assumed. At this time, since the working surface side expands, in the case of an empty joint, as shown in FIG. 2, the structure warps convexly to the working surface side. Further, when the conventional mortar 2 is used, the mortar is slightly crushed on the working surface side, so that the expansion of the brick in the vicinity of the working surface is somewhat relaxed and the warpage is slightly reduced, as shown in FIG. But,
Not enough, there is still warpage.
【００１３】可縮性の高いモルタルを使用した場合、稼
働面側がつぶれるとともに背面側もつぶれるため、れん
が構造体全体では結局従来のモルタルを使用した場合と
同様に稼働面側に凸の反りが発生する。When a highly compressible mortar is used, the working surface side is crushed and the back surface side is also crushed, so that the entire brick structure eventually has a convex warp on the working surface side as in the case of using conventional mortar. To do.
【００１４】本発明によるモルタルの場合には、そこに
配合されているジルコンあるいは酸化チタンが低温では
マグネシアと反応せず、つぶれにくい。しかし、１００
０℃を越える温度条件下では反応により軟化し、つぶれ
やすくなる。従って、図４に示すように、温度の低い背
面側ではつぶれにくくモルタル非軟化部３を形成し、れ
んがの間隔を確実に保つ。一方、高温の稼働面側では軟
化によりモルタル軟化部４を形成し、れんがの膨張を十
分に吸収し、結果的にはれんが構造体全体を安定した状
態に保つことができる。In the case of the mortar according to the present invention, the zircon or titanium oxide blended therein does not react with magnesia at low temperatures and is not easily crushed. However, 100
When the temperature exceeds 0 ° C, the reaction softens and easily collapses. Therefore, as shown in FIG. 4, the mortar non-softening portion 3 is formed so as not to be easily crushed on the back surface side where the temperature is low, and the interval between the bricks is reliably maintained. On the other hand, on the operating surface side at high temperature, the mortar softening portion 4 is formed by softening, the expansion of the brick is sufficiently absorbed, and as a result, the entire brick structure can be kept in a stable state.
【００１５】ところで、従来のマグネシアモルタルには
スラグが侵入しやすく、これが原因となってしばしば目
地の先行侵食が起こることがあった。しかし本発明のモ
ルタルは、高温条件下で反応した後には、マグネシア、
ジルコニア、フォルステライト（２ＭｇＳｉＯ4）、２
ＭｇＴｉＯ4などを生成する。ここへスラグが侵入して
きた場合、ジルコニアは侵入スラグの粘性を増加させ、
またスラグの主成分の一つであるＣａＯと反応して高融
点物質ＣａＺｒＯ4を生成する。By the way, slag easily penetrates into the conventional magnesia mortar, and this often causes preceding erosion of joints. However, the mortar of the present invention, after reacting under high temperature conditions, magnesia,
Zirconia, forsterite (2MgSiO 4 ), 2
It produces MgTiO 4 . If slag invades here, zirconia will increase the viscosity of the invading slag,
It also reacts with CaO, which is one of the main components of slag, to form a high-melting point material CaZrO 4 .
【００１６】その結果、侵入スラグの見掛け粘度上昇や
液相率低下が起こり、スラグの侵入が抑制されて、モル
タルの侵食が抑制される。２ＭｇＴｉＯ4 もＣａＯと反
応して高融点物質ペロプスカイト（ＣａＴｉＯ4） を生
成する。このためやはりスラグの侵入とモルタルの侵食
は抑制される。またマグネシアとジルコンないしは酸化
チタンとの反応によってモルタル自体が緻密化すること
も、スラグ侵入抑制と耐食性向上に寄与する。As a result, the apparent viscosity of the invading slag is increased and the liquid phase ratio is lowered, the invasion of the slag is suppressed, and the mortar erosion is suppressed. 2MgTiO 4 also reacts with CaO to form a high-melting point material perovskite (CaTiO 4 ). Therefore, slag invasion and mortar erosion are also suppressed. Further, the densification of the mortar itself due to the reaction of magnesia with zircon or titanium oxide also contributes to the suppression of slag intrusion and the improvement of corrosion resistance.
【００１７】本発明のモルタルを製造するために使用す
る原料については以下に述べる。ジルコンは通常耐火物
用として用いられる品質のものを使用できる。ただしジ
ルコン中に不可避的に含まれているＨｆＯ2 は不純物と
しない。酸化チタンはアナターゼ型あるいはルチル型の
いずれも使用可能で、純度は８０重量％以上が望まし
い。マグネシアは電融品あるいは焼結品のどちらでも使
用できる。その純度は通常耐火物用として使用されてい
る８０重量％以上のものが良い。上記の各原料について
は適宜粒度を調整して使用する。The raw materials used to produce the mortar of the present invention are described below. As the zircon, one having a quality usually used for refractories can be used. However, HfO 2 unavoidably contained in zircon is not considered as an impurity. Titanium oxide may be either anatase type or rutile type, and its purity is preferably 80% by weight or more. Magnesia can be used as either an electromelted product or a sintered product. The purity is preferably 80% by weight or more, which is usually used for refractories. The particle size of each of the above raw materials is appropriately adjusted before use.
【００１８】モルタル中ジルコンと酸化チタンのどちら
か一方あるいは両者の含有量を合計で０．１〜４０重量
％とするのは、図５に示すように、０．１重量％以上含
まれていないとモルタルの軟化は起こらず、また耐食性
の向上も認められないこと、一方、４０重量％を越える
とモルタルの耐食性が大きく低下することが理由であ
る。この含有量は、好ましくは５〜２０重量％である。
なお図５の作成に当たっては、焼結マグネシアとジルコ
ンの配合量をいろいろと変化させたモルタルを試作し、
可縮性と侵食量およびスラグ侵入深さを調査した。その
際モルタルには粘土を７重量％添加し、混練時には水分
を２７重量％添加して作成した。As shown in FIG. 5, the content of either one or both of zircon and titanium oxide in the mortar is 0.1 to 40 wt% in total, as shown in FIG. The reason is that the mortar does not soften and the corrosion resistance is not improved. On the other hand, when it exceeds 40% by weight, the corrosion resistance of the mortar is significantly reduced. This content is preferably 5 to 20% by weight.
In addition, in making FIG. 5, mortar with various mixed amounts of sintered magnesia and zircon was manufactured as a prototype,
The contractibility and erosion amount and slag penetration depth were investigated. At that time, 7% by weight of clay was added to the mortar, and 27% by weight of water was added during kneading.
【００１９】可縮性の調査は、モルタルをマグクロれん
がの間に厚さ２ｍｍで挟み込み、モルタル層が水平にな
るようにして上から１ＭＰａの圧力を加えつつ１６００
℃まで昇温し、その際のモルタルの収縮量を測定して行
なった。結果はジルコン無添加のマグネシアモルタルの
場合を１００として指数化した。値が大きいほど可縮性
に優れている。なお用いたマグクロれんがはＣｒ2Ｏ3を
約１０重量％含有し、嵩比重３．０６ｇ／ｃｍ3 、見掛
気孔率１６．０％、常温圧縮強度５３Ｐａのものであっ
た。For the examination of the contractibility, mortar was sandwiched between magcro bricks with a thickness of 2 mm, the mortar layer was made horizontal, and a pressure of 1 MPa was applied from above to 1600.
The temperature was raised to 0 ° C., and the shrinkage amount of the mortar at that time was measured. The result was indexed with the case of magnesia mortar containing no zircon as 100. The larger the value, the better the shrinkability. The mag brick used had a Cr 2 O 3 content of about 10% by weight, a bulk specific gravity of 3.06 g / cm 3 , an apparent porosity of 16.0% and a room temperature compressive strength of 53 Pa.
【００２０】次に、侵食状況の調査は回転侵食試験によ
った。すなわちまず鉄製の横型ドラムの内面にモルタル
を用いて耐火物を築造する。こうして内張りされたドラ
ム内の空間に酸素−プロパンバーナーで火炎を送りなが
らスラグを溶解し、このスラグを耐火物やモルタルと反
応させて侵食させる試験である。モルタルの損耗は目的
の侵食深さとスラグ侵入深さの合計で評価した。すなわ
ち侵食深さとスラグ侵入深さの合計が少ないほど耐食性
に優れるとした。Next, the erosion condition was investigated by a rotary erosion test. That is, first, a refractory is constructed by using mortar on the inner surface of an iron horizontal drum. This is a test in which the slag is melted while sending a flame with an oxygen-propane burner into the space inside the drum lined in this way, and this slag is reacted with refractory and mortar to erode. Mortar wear was evaluated by the sum of the target erosion depth and the slag penetration depth. That is, the smaller the sum of the erosion depth and the slag penetration depth, the better the corrosion resistance.
【００２１】まず、モルタル目地厚さは５ｍｍとし、モ
ルタルの添加水分量は２７重量％とした。用いた耐火物
は可縮性の調査に用いたれんがと同じである。これをド
ラムに内張りする際正十二角形の円筒となるように切削
加工により断面を台形とし、さらに個々の台形れんがを
縦に二分して、その間に供試モルタルを挟み込んだ。こ
うしてドラムを築造した後、乾燥させて侵食試験を行っ
た。First, the joint thickness of the mortar was 5 mm, and the amount of water added to the mortar was 27% by weight. The refractory used is the same as the brick used for the contractibility investigation. When this was lined on a drum, the cross section was made into a trapezoid by cutting so that it became a regular dodecagonal cylinder, and each trapezoidal brick was vertically divided into two, and the sample mortar was sandwiched between them. After building the drum in this way, it was dried and subjected to an erosion test.
【００２２】侵食試験では、内張り耐火物の表面温度が
１７００℃となるように火炎の強さを制御し、４時間ス
ラグと反応させて侵食させた。用いたスラグの組成はＣ
ａＯ／ＳｉＯ2重量比＝３、Ａｌ2Ｏ3＝２０重量％、Ｃ
ａＦ2＝２０重量％である。スラグは３０分毎に排出と
投入を繰り返した。実験終了後、耐火物試料をモルタル
と共に取り外して目地部の侵食深さとスラグ侵入深さを
測定し合計した。結果はジルコン無添加のマグネシアモ
ルタルの場合を１００とし、侵食侵入指数とした。値が
小さいほど耐用性が高い。In the erosion test, the strength of the flame was controlled so that the surface temperature of the lining refractory was 1700 ° C., and the slag was reacted for 4 hours for erosion. The composition of the slag used is C
aO / SiO 2 weight ratio = 3, Al 2 O 3 = 20% by weight, C
aF 2 = 20% by weight. The slag was repeatedly discharged and charged every 30 minutes. After the experiment was completed, the refractory sample was removed together with the mortar, and the erosion depth of the joint and the slag penetration depth were measured and summed. The result was set as 100 in the case of magnesia mortar without addition of zircon, and was taken as the erosion penetration index. The smaller the value, the higher the durability.
【００２３】本発明のモルタルには、ジルコン、酸化チ
タン、マグネシア以外の耐火材を添加しても差し支えな
い。ただしモルタルの耐食性を損なわないように、その
添加量は２０重量％以下としなければならない。添加で
きる耐火物としては、アルミナ、スピネル、ジルコニ
ア、カルシア、ムライト、ドロマイト、ボーキサイト、
礬土頁岩、シャモット、ろう石、粘土などを例示でき
る。これらの内の二種以上を事前処理した複合材であっ
ても差し支えない。A refractory material other than zircon, titanium oxide and magnesia may be added to the mortar of the present invention. However, the addition amount must be 20% by weight or less so as not to impair the corrosion resistance of the mortar. Refractory materials that can be added include alumina, spinel, zirconia, calcia, mullite, dolomite, bauxite,
Examples thereof include gravel shale, chamotte, wax and clay. A composite material obtained by pretreating two or more of these may be used.
【００２４】耐火材の製造に用いるバインダーとして
は、粘土、水ガラス、セメント、燐酸塩、各種樹脂、あ
るいは上で例示した耐火材の超微粉などが例示できる。
また解膠分散剤、消泡剤、界面活性剤、硬化剤、硬化遅
延剤、膨張材、有機質あるいは無機質の繊維などを添加
しても差し支えない。Examples of the binder used for producing the refractory material include clay, water glass, cement, phosphate, various resins, and ultrafine powder of the above-mentioned refractory material.
Further, a peptizing dispersant, a defoaming agent, a surfactant, a curing agent, a curing retarder, an expanding material, an organic or inorganic fiber, etc. may be added.
【００２５】[0025]
（実施例１）本発明によるモルタルを用いてマグクロれ
んがを築造し、回転侵食試験によりモルタルの耐用性を
調査した。回転侵食試験の方法については前述の通りで
ある。結果は比較品（ＡＡ）の場合を１００とした指数
で表１〜６に示した。可縮指数は大きいほど、また侵食
侵入指数は小さいほど優れる。これらの結果によれば、
本発明によるモルタルは比較品と比べて耐食性・耐スラ
グ侵入性に優れていることがわかる。また、これらの結
果をまとめて示した図６によれば、ジルコンと酸化チタ
ンのうちのどちらか一方あるいは両者を０．１〜４０重
量％配合すれば可縮性並びに耐食性・耐スラグ侵入性に
優れた本発明品が得られることがわかる。(Example 1) A magro brick was constructed using the mortar according to the present invention, and the durability of the mortar was investigated by a rotary erosion test. The method of the rotary erosion test is as described above. The results are shown in Tables 1 to 6 as indexes with the comparative product (AA) as 100. The larger the shrinkage index and the smaller the erosion penetration index, the better. According to these results,
It can be seen that the mortar according to the present invention is superior to the comparative product in corrosion resistance and slag penetration resistance. Further, according to FIG. 6 which collectively shows these results, if one or both of zircon and titanium oxide is blended in an amount of 0.1 to 40% by weight, the compressibility and the corrosion resistance and the slag penetration resistance are improved. It can be seen that an excellent product of the present invention can be obtained.
【００２６】[0026]
【表１】 １）アナターゼ型 ２）比較品ＡＡを１００として表示[Table 1] 1) Anatase type 2) Comparative product AA is displayed as 100
【００２７】[0027]
【表２】 １）アナターゼ型 ２）比較品ＡＡを１００として表示[Table 2] 1) Anatase type 2) Comparative product AA is displayed as 100
【００２８】[0028]
【表３】 １）アナターゼ型 ２）比較品ＡＡを１００として表示[Table 3] 1) Anatase type 2) Comparative product AA is displayed as 100
【００２９】[0029]
【表４】 １）アナターゼ型 ２）比較品ＡＡを１００として表示[Table 4] 1) Anatase type 2) Comparative product AA is displayed as 100
【００３０】[0030]
【表５】 １）アナターゼ型 ２）比較品ＡＡを１００として表示[Table 5] 1) Anatase type 2) Comparative product AA is displayed as 100
【００３１】[0031]
【表６】 １）アナターゼ型 ２）比較品ＡＡを１００として表示[Table 6] 1) Anatase type 2) Comparative product AA is displayed as 100
【００３２】（実施例２）実施例１に記載のＡＡ（表
１）、ＢＥ（表３）、ＢＳ（表５）、ＢＭ（表４）の４
種のモルタルを用いてマグクロれんがの直線壁を築造
し、その変形を調査した。用いたれんがは回転侵食試験
に用いたものと同じものであった。形状は６５×１１４
×２３０ｍｍで、２１枚を鉄製の水冷定板上に並べて施
工した。施工は、れんがの６５×１１４ｍｍの面に２ｍ
ｍの厚さでモルタルをこて塗りし、となりのれんがと接
着させることで図１のような直線壁を作った。モルタル
混練時の添加水分量は２７重量％であった。(Example 2) 4 of AA (Table 1), BE (Table 3), BS (Table 5) and BM (Table 4) described in Example 1
A straight wall of magcro brick was constructed using seed mortar and its deformation was investigated. The brick used was the same as that used for the rotary erosion test. The shape is 65x114
Twenty-one pieces were arranged on an iron water-cooled plate with a size of 230 mm and constructed. Construction is 2m on the surface of brick 65 × 114mm
A mortar was troweled to a thickness of m and adhered to a brick next to it to form a straight wall as shown in FIG. The amount of water added during mortar kneading was 27% by weight.
【００３３】形成した直線壁のれんが列両端を固定し、
れんがを一方向から電気ヒーターで加熱した。徐々にヒ
ーターの温度を上げ、１２００℃となったところで保定
した。８時間保定後、列中央（１１枚目）のれんがのせ
り上がり高さを計測した。測定結果を表７に示す。本発
明によるモルタルでは比較品と比べてせり上がり高さが
激減した。By fixing both ends of the line of bricks of the formed straight wall,
The brick was heated from one direction with an electric heater. The temperature of the heater was gradually raised, and the temperature was held at 1200 ° C. After retaining for 8 hours, the height of the brick in the center of the row (11th sheet) was measured and the height was measured. Table 7 shows the measurement results. In the mortar according to the present invention, the rising height was drastically reduced as compared with the comparative product.
【００３４】[0034]
【表７】 [Table 7]
【００３５】（実施例３）実施例１と２に記載のモルタ
ルＢＥ（表３）を用いてマグクロれんがからなるＲＨ下
部槽の敷すなわち槽底の内張りを築炉した。約４５０ｃ
ｈ使用後に敷の状況を調査した結果、従来のマグネシア
モルタル（実施例１および２のＡＡ）を用いていたとき
には、れんがのせり上がりに起因すると思われるれんが
の浮上が頻発していたのに対し、ＢＥを使用した場合は
浮上は全く見られず、敷は極めて健全な状態にあった。(Example 3) The mortar BE (Table 3) described in Examples 1 and 2 was used to construct a furnace lining for the RH lower tank, that is, a tank bottom, which is made of magro brick. About 450c
h As a result of investigating the condition of the floor after use, when the conventional magnesia mortar (AA of Examples 1 and 2) was used, the rising of the brick, which is considered to be caused by the rising of the brick, frequently occurred. When BE was used, no levitation was observed and the floor was in a very healthy state.
【００３６】[0036]
【発明の効果】本発明はれんが構造体を安定させ得る高
耐用性モルタルを提供でき、耐火物内張り全体の寿命を
大幅に延長できる。これにより窯炉を用いて行なう鉄鋼
を含めた金属、あるいはセメント、ガラスなどの製造コ
ストを大きく引き下げることができる。INDUSTRIAL APPLICABILITY The present invention can provide a highly durable mortar that can stabilize a brick structure, and can significantly extend the life of the entire refractory lining. As a result, it is possible to greatly reduce the manufacturing cost of metal including steel, cement, glass, etc., which is carried out using a kiln.
【図１】直線壁におけるれんがとモルタルの配置を示す
図である。FIG. 1 is a diagram showing an arrangement of bricks and mortar on a straight wall.
【図２】空目地を採用したれんが直線壁の変形を示す図
である。FIG. 2 is a diagram showing a deformation of a straight wall of a brick that employs an empty joint.
【図３】従来モルタルを用いたれんが直線壁の変形を示
す図である。FIG. 3 is a diagram showing a deformation of a straight wall of a brick using conventional mortar.
【図４】本発明によるモルタルを用いたれんが直線壁の
変形を示す図である。FIG. 4 is a diagram showing the deformation of a straight wall of a brick using mortar according to the present invention.
【図５】ジルコン配合量と可縮指数、侵食侵入指数の関
係を示す図である。FIG. 5 is a diagram showing the relationship between the amount of zircon compounded, the shrinkage index, and the erosion penetration index.
【図６】ジルコン及び酸化チタンの配合量とモルタルの
性質の関係を示す図である。FIG. 6 is a diagram showing the relationship between the blending amounts of zircon and titanium oxide and the properties of mortar.
１ れんが ２ モルタル ３ モルタル非軟化部 ４ モルタル軟化部 1 brick 2 mortar 3 mortar non-softened part 4 mortar softened part
Claims (1)
一方あるいは両者を合計で０．１〜４０重量％含み、残
部がマグネシアと２０重量％以下の他の耐火材とからな
る耐火モルタル。1. A refractory mortar containing one or both of zircon and titanium oxide in a total amount of 0.1 to 40% by weight, and the balance being magnesia and another refractory material of 20% by weight or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7184980A JPH0920567A (en) | 1995-06-29 | 1995-06-29 | Refractory mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7184980A JPH0920567A (en) | 1995-06-29 | 1995-06-29 | Refractory mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0920567A true JPH0920567A (en) | 1997-01-21 |
Family
ID=16162701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7184980A Withdrawn JPH0920567A (en) | 1995-06-29 | 1995-06-29 | Refractory mortar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0920567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195529A (en) * | 2020-09-17 | 2022-03-18 | 宝山钢铁股份有限公司 | High-strength magnesium refractory mortar for refining steel ladle |
-
1995
- 1995-06-29 JP JP7184980A patent/JPH0920567A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195529A (en) * | 2020-09-17 | 2022-03-18 | 宝山钢铁股份有限公司 | High-strength magnesium refractory mortar for refining steel ladle |
| CN114195529B (en) * | 2020-09-17 | 2023-08-11 | 宝山钢铁股份有限公司 | High-strength magnesia refractory mortar for refining ladle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20040157725A1 (en) | Crack-resistant dry refractory | |
| US20040157724A1 (en) | Crack-resistant insulating dry refractory | |
| AU2007291593B2 (en) | Fired refractory ceramic product | |
| EP2307131B1 (en) | Gasifier reactor internal coating | |
| JP6259643B2 (en) | High chromia castable refractory, precast block using the same, and waste melting furnace lined with one or both of them | |
| JP2011241093A (en) | Inner lining pouring material | |
| US8138110B2 (en) | Fireproof ceramic mix, fireproof ceramic molded body formed of said mix and use thereof | |
| US20210331982A1 (en) | Dry refractory compositions with reduced levels of respirable crystalline silica | |
| Othman et al. | Recycling of spent magnesite and ZAS bricks for the production of new basic refractories | |
| Silva et al. | Castable systems designed with powders reclaimed from dismantled steel induction furnace refractory linings | |
| JP5712888B2 (en) | Lined lining structure for steelmaking containers | |
| US3303032A (en) | Magnesia-zircon refractories | |
| KR101100269B1 (en) | General castable for turn-dish using wasted refractory | |
| JPH0920567A (en) | Refractory mortar | |
| JP2004203702A (en) | Monolithic refractory containing serpentine or talc, applied body of the same, and furnace lined with the same | |
| US10093576B2 (en) | Unshaped refractory material | |
| JP2021004160A (en) | Brick for hot metal ladle, and hot metal ladle lined with the same | |
| JPH06345550A (en) | Castable refractory | |
| US20070213198A1 (en) | Refractory composition | |
| JP6204825B2 (en) | Immersion nozzle | |
| JP2022184504A (en) | Shaped refractory for lining induction furnace and construction method of induction furnace using lining shaped refractory | |
| KR101087203B1 (en) | Castable for permanent lining of laddle using wasted refractory | |
| JP3157310B2 (en) | Refractory | |
| JP4124864B2 (en) | Ramming material for induction furnace | |
| JP2005213120A (en) | Monolithic refractory for waste melting furnace and waste melting furnace using the same for lining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020903 |