JP5058595B2 - Lining material construction method, construction equipment, and joint spacer for lining material construction - Google Patents

Description

  The present invention relates to a construction method for lining an irregular refractory material in a cylindrical heat-resistant container such as a ladle, a construction apparatus, and a joint spacer for forming a lining joint.

The refractory is a member indispensable for processing and holding a high-temperature substance such as a molten metal, and the refractory is exposed to a thermal shock due to the entry and exit of high-temperature contents and is in an environment that is easily destroyed.
In particular, in the ladle which is a transport container used in the molten metal refining process, refractory is constructed on the inner surface of the iron skin, but lining such as castable is used as the refractory used in such a molten metal refining container. The material is used.

The lining material can be applied to the inner surface of the container by various methods such as spraying. However, from the viewpoint of obtaining sufficient durability and resistance to erosion, it is preferable to adopt a casting method.
As a method of constructing the lining material by pouring into a cylindrical container such as a ladle, conventionally, a mold having a height dimension from the bottom of the ladle to the upper opening is formed, and between the inner surface of the container and the outer surface of the mold A method has been proposed in which a lining material is poured into the substrate (for example, see Patent Document 1).
In addition, as an apparatus for lining the inner surface of a cylindrical container while moving the mold, an apparatus using a plurality of endless belt bodies attached in the vertical direction of the mold body is disclosed. (For example, refer to Patent Document 2).
By adopting such a lining material construction method, it is only necessary to pour the lining material at once, and it is possible to efficiently construct the lining material, ensuring a sufficient thickness of the lining material, and durability of the ladle. There is an advantage that the melt resistance can be improved.

JP-A-8-159667 JP-A-2005-308285

However, in the technique described in Patent Document 1, since the lining material is poured into the inner surface of the container at once, it takes time to pour, and the construction using the quick setting agent cannot be performed. Accordingly, after the lining material is applied, a sufficient curing period must be taken until the lining material is cured, and the container cannot be used for the smelting process.
Also, since the lining material is poured all at once, the lining material construction surface is continuous on the inner surface of the container, but when the molten metal is poured into the container, it may be broken and lost due to a sudden temperature change. There is a problem that it must be repaired by construction.
Furthermore, since containers such as ladle have a height of 4 to 5 m, it is difficult to sufficiently wrap them even when using a vibrator or the like in order to sufficiently turn the lining material into the gap between the mold and the inner surface of the container. There is a problem that there is.
On the other hand, the technique described in Patent Document 2 cannot be said to be sufficiently efficient because the container lining operation is performed in the circumferential direction.

  An object of the present invention is to provide a lining material construction method, a lining material construction device, and a lining material construction joint, which have good workability and can ensure sufficient durability even when molten metal is poured into a container after construction. It is to provide a spacer.

  In the present invention, by applying a lining material to the inner surface of the container while forming joints that serve as cushions at appropriate intervals, it is possible to cause cracks on the lining material construction surface due to shrinkage during curing and expansion / contraction due to heat. The surface of the lining material construction that prevents this and forms the joint is efficiently formed. Specifically, the gist is as follows.

(1) A lining material construction method in which a lining material is constructed by pouring into the inner surface of a cylindrical container that expands in diameter toward the top ,
A step of forming a plurality of mold members having a height dimension smaller than the depth dimension of the container concentrically around the center of the container cylinder to form a mold body spaced apart from the inner surface of the container by a fixed dimension. Carried out, then
Pouring a lining material containing a rapid setting agent along the circumferential direction into the gap between the inner surface of the container and the outer surface of the mold body; and
After the poured lining material is cured, the step of separating the plurality of mold members from the construction surface of the lining material and demolding the mold body;
The plurality of mold members are raised, and the process from forming the mold body to the process of removing the mold body are alternately and repeatedly performed.
A method for constructing a lining material, comprising performing a step of forming vertical joints at predetermined intervals in a circumferential direction on the poured lining material either before or after the step of pouring the lining material.

(2) In the lining material construction method of (1),
The step of forming the joint is performed as a pre-step of the step of pouring each of the lining materials,
By placing a joint spacer having a plate-like horizontal portion and a plate-like vertical portion standing vertically from this horizontal portion on the upper surface of the part where the lower lining material is constructed, and pouring the lining material, A method for constructing a lining material characterized by forming vertical joints.
(3) In the construction method of the lining material of (1),
The step of forming the vertical joint is performed as a subsequent step of the step of pouring the lining material,
Construction of lining material characterized in that a vertical joint is formed by projecting a plate-like pushing member from the outer surface of each formwork member into the poured lining material and forming a cut on the construction surface of the lining material Method.

(4) In the lining material construction method of (1),
The step of forming the vertical joint is carried out as a subsequent step of the step of pouring each of the lining materials,
A method for constructing a lining material, wherein a longitudinal joint is formed by projecting a plate-like joint spacer from an outer surface of the mold member into the poured lining material and embedding the joint spacer in the lining material.
(5) In the construction method of the lining material according to (3) or (4),
A method for constructing a lining material, wherein a step of forming a horizontal joint by arranging plate-like joint spacers on the upper surface of the poured lining material is carried out.
(6) In the construction method of the lining material according to any one of (1) to (5),
The construction method of a lining material, wherein the height of the mold member is 300 mm to 1000 mm.

(7) In the lining material construction method according to any one of (1) to (6),
A jointing method for forming a lining material, wherein a joint is formed by pouring the lining material while combining the raising and turning of the mold body.
(8) A lining material construction device for constructing a lining material by pouring into the inner surface of a cylindrical container whose diameter increases toward the top,
A post disposed in the center of the container cylinder and extending in a vertical direction;
A disk-shaped pedestal supported by the post so as to be movable up and down;
A platform raising / lowering mechanism for raising and lowering the platform along the post;
A plurality of mold members that are arranged so that their ends overlap each other along the outer peripheral edge of the gantry, and are provided so as to be able to advance and retreat in the radial direction of the disk of the gantry,
A formwork advancing / retreating mechanism for advancing and retreating each formwork member from the outer peripheral edge of the frame;
A lining material construction apparatus comprising the joint forming means for forming joints at predetermined intervals.

(9) In the lining material construction device of (8),
The joint forming means is
A joint spacer having a plate-like horizontal portion and a plate-like vertical portion standing upright from the horizontal portion is provided between the inner surface of the container and the formwork (8). Lining material construction equipment described in).
(10) In the lining material construction apparatus according to (8), the joint forming means includes:
A jointing push member provided so as to be movable forward and backward in an out-of-plane direction from the outer surface of the mold member;
A lining material construction apparatus comprising: a pushing member advancing / retreating mechanism for advancing and retracting the pushing member with respect to the outer surface of the mold member.
(11) In the lining material construction apparatus according to (8), the joint forming means includes:
A spacer holding member that is provided so as to be movable forward and backward in an out-of-plane direction from the outer surface of the mold member, and holds joint spacers for forming vertical joints;
A lining material construction apparatus comprising a holding member advancing / retreating mechanism for advancing / retreating the spacer holding member with respect to the outer surface of the mold member.

(12) In the lining material construction apparatus according to any one of (8) to (11),
A lining material construction apparatus comprising a gantry rotating mechanism for rotating the gantry around the post.
(13) In the lining material construction apparatus according to any one of (8) to (12),
A lining material construction apparatus, comprising: a lining material discharge mechanism which is provided on the gantry, is rotatably supported by the post, and discharges the lining material.

(14) A joint spacer for lining material construction used for a lining material construction method in which a lining material is constructed by pouring into the inner surface of a cylindrical container that expands in diameter toward the top, and for forming joints at predetermined intervals on the lining material. Because
A plate-like horizontal portion in which one end edge in the width direction is formed in an arc shape following the arc of the inner surface of the container, and the other end edge is formed in a concentric arc shape smaller than the arc;
With a plate-like vertical part rising from this horizontal part,
A joint spacer for lining material construction, wherein the horizontal portion and the vertical portion are formed with holes penetrating the plate-like front and back surfaces.

According to the present invention, when a lining material is applied to the inner surface of a container, a longitudinal joint is formed at a predetermined interval in the circumferential direction, so that if the material has a contractibility in the longitudinal joint portion, it becomes a cushion. The rapid change in temperature when the metal is poured into the container absorbs the expansion and contraction of the lining material at the vertical joint, making it difficult for cracks to occur on the surface of the lining material, greatly improving the durability of the lining material. . In addition, even if the starting point of the crack occurs, the joint becomes a discontinuous surface, so that the stress is released and the growth of the crack does not progress, and the crack and the defect are hardly generated.
In addition, since the lining material is poured into the lining material for casting, the curing period after casting can be shortened, and the lining material can be efficiently constructed in a short time.
Furthermore, since the mold body can be formed simply by advancing and retracting a plurality of mold members arranged in a circular shape with respect to the inner surface of the container, the mold body can be easily disassembled and assembled. The work efficiency of frame formation is also improved.

In addition, because the height of the formwork member is smaller than the depth of the container and the lining material is poured in multiple times in the height direction, horizontal joints can be easily formed even in the horizontal seam of the lining material. The joint cushioning effect can be produced also in the vertical direction.
Furthermore, the lining material can be efficiently constructed in a short time by alternately and repeatedly performing the pouring of the lining material in the height direction and the work of raising the formwork.
Since the material and lining thickness of the lining material can be changed as appropriate according to the height position of the inner surface of the container, for example, the lining material of a portion that is prone to melting damage such as a molten metal slag line in a container such as a ladle The durability of the container can be further improved by changing the material or adjusting the thickness of the lining material.

In addition, by setting the height of the mold member to about 300 mm to 1000 mm, the lining material can be sufficiently distributed to the gap portion between the inner surface of the container and the outer surface of the mold frame using a vibrator or the like when the lining material is poured. In addition, since the casting can be performed reliably even when a large aggregate is used, the durability of the lining material construction surface can be improved and the durability can be further improved.
Furthermore, since the size of the mold member can be easily carried, the time required for forming the mold can be further shortened.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
[1] Structure of Lining Material Construction Device 1 FIGS. 1 to 3 show a lining material construction device 1 according to a first embodiment of the present invention. 1 and 2 are side views in the vertical direction of the construction apparatus 1, and FIG. 3 is a plan view of the construction apparatus 1.
This construction apparatus 1 is an apparatus for constructing a casting lining material such as a castable refractory by pouring inside a cylindrical ladle T for conveying molten metal.
2 and a gantry 13, a plurality of formwork members 14, and a lining material discharge mechanism 15.
The ladle T has a cylindrical shape that increases in diameter as it goes to the upper part, but has an iron skin that slightly increases in diameter as it goes to the upper part, a backing brick that is constructed inside the iron skin, and the inner side of this back-hooked brick The construction equipment 1 is used to construct a lining material such as castable on the inner surface of the refractory brick.

The base 11 is composed of a circular plate-like body installed at the bottom of the ladle T, and is a part that supports the load of the entire construction apparatus 1.
The post 12 is composed of a steel pipe columnar body that stands upright at the circular center of the base 11.
The gantry 13 is supported by the post 12 so as to be movable up and down, and is a disk-like body that supports the formwork member 14 and the lining material discharge mechanism 15. As shown in FIG. 4, the gantry 13 has a central cylindrical outer shape. A guide 131 and a ring-shaped form member holding body 132 surrounding the support guide 131 are provided, and these are provided on the bottom substrate 133.

The support guide 131 is composed of a cylindrical body inserted through the post 12 and is not shown. However, a plurality of bearings are exposed on the inner surface of the cylinder, and each bearing is provided on the outer peripheral surface of the post 12. It is in contact.
The formwork member holding body 132 is connected to the support guide 131 via the bottom substrate 133, and a plurality of guide grooves 134 are formed radially from the center of the ring so as to penetrate the inside and outside of the ring.
Although such a gantry 13 is not shown, the gantry 13 can be moved in the vertical direction of the post 12 and the rotation direction around the post 12 by a drive source as a gantry driving mechanism provided in the upper part.

As shown in FIGS. 5A and 5B, the mold member 14 can be moved forward and backward in the radial direction of the disk-shaped body of the gantry 13 in the guide groove 134 of the mold member holding body 132 of the gantry 13. A plurality of mold members 14 are mounted, and the end surfaces on the outer side in the radial direction of the mold members 14 are formed in a cylindrical surface shape along the circumference of the gantry 13.
Both ends in the circumferential direction of the mold member 14 are thin plate-like, and the adjacent end portions come into contact with each other in a state where the mold member 14 is projected most from the mold member holding body 132. In a state where the protruding amount is smaller than that, the thin plate portions of the adjacent formwork members overlap each other.

This is because the shape of the ladle T described above is slightly enlarged as it goes upward, so that the lining material is applied to the bottom of the ladle T and the lining material is applied to the upper end of the ladle T. This is because the circumferential length is different in order to absorb this.
The height of the mold member 14 can be about 300 mm to 1000 mm, but it is most efficient to set it to about 500 mm to 700 mm considering transportation, workability and the like.
A hydraulic cylinder 16 as a holding member advancing / retreating mechanism is provided on the base end side of each mold member 14, and the mold member 14 is advanced and retracted along the guide groove 134 by the hydraulic cylinder 16. The base end of the hydraulic cylinder 16 is connected to the outer peripheral surface of the support guide 131 of the gantry 13.

Although not shown in FIGS. 5A and 5B, the mold member 14 is provided with a pushing member for forming a vertical joint.
Specifically, as shown in FIG. 6, the pushing member 17 is made of a metal plate-like body, and is inserted into two through grooves formed on the outer peripheral surface of the mold member 14, thereby pushing the pushing member. The hydraulic cylinder 18 provided on the base end side 17 can be moved back and forth with respect to the outer peripheral surface of the mold member 14.

The vertical joint is formed by the pushing member 17 at a timing at which the pushing member 17 is placed outside the outer peripheral surface of the mold member 14 after the lining material L is poured by the lining material discharge mechanism 15 and before the lining material L starts to harden. When the lining material L starts to harden after being protruded and held for a certain period of time, it is pulled out to form a vertical joint. At this time, a joint spacer may be attached to the tip of the push-in member, and left behind when being pulled out and embedded.
The joint depth can freely change the protruding amount of the push-in member 17, but usually, the joint width is preferably about half of the casting thickness of the lining material.
Moreover, in this embodiment, although the pushing member 17 of two places is provided with respect to the formwork member 14, not only this but only one place is provided in the circumferential direction center of the outer peripheral surface of the formwork member 14. Also good.
By absorbing the thermal expansion of the joint, cracks or the like hardly occur on the lining material construction surface, and the durability of the lining material is greatly improved. Further, even if a crack starting point occurs on the surface with the most severe thermal stress, the joint becomes a discontinuous surface, so that the stress is released and the growth of the crack does not progress, and cracks and defects do not easily occur.

The lining material discharge mechanism 15 is a device that pours a lining material between the inner surface of the ladle T and a mold body formed by the plurality of mold members 14, and as shown in FIG.
1, a screw auger 152 provided on the rotating table 151, and a hopper 153 provided on the upper portion of the screw auger 152.
The turntable 151 is rotatably supported on the outer periphery of the support guide 131 of the gantry 13 and is rotated by a driving means (not shown).

  The screw auger 152 is a device that is provided on the turntable 151 and discharges a lining material to the outer periphery of a mold body formed by combining a plurality of mold member 14, and as shown in FIG. A structure is provided in which the screw 155 is rotatably supported inside the tube 154, and a discharge port 156 for discharging the lining material is provided at the tip of the cylindrical body 154.

A pulley 157 is provided on the proximal end side of the screw 155, and the screw is rotated by a motor 158 (see FIGS. 1 and 2) provided in parallel with the screw auger 152.
The hopper 153 is a material supply means for supplying a lining material into the screw auger 152, and is connected to the vicinity of the proximal end side of the screw auger 152 via a charging port 156 ′.
Further, immediately after the downstream side of the insertion port 156 ′ of the screw auger 152, a plurality of curing aid input ports 159 are formed around the circumferential direction of the cylindrical body 151, and from the curing aid input port 159, abruptly. Binder is supplied.

In such a lining material discharge mechanism 15, a paste-like lining material in which water is added to the powder material of the lining material in advance and a setting retarder is added to the hopper 153 from the lining material kneading supply tank, The auger 152 is supplied.
In the screw auger 152, by rotating the screw 155, the lining material raw material is agitated and conveyed, the rapid setting agent is introduced in the intermediate portion, further agitated and conveyed, and the lining material is discharged from the discharge port 156. It has become. In addition, as a quick setting agent, any of a liquid form and a powder form can be used, and a specific kind is not limited at all. Examples of the main setting agent include sodium aluminate, potassium aluminate, sodium silicate, potassium silicate, and sodium phosphate.

[2] Raw material of amorphous refractory First, the raw material used as the lining material is not limited to the material of the target refractory raw material, but the main refractory raw materials are alumina, siliceous, and alumina-silica. , Alumina-spinel, alumina-magnesia, alumina-carbon, alumina-SiC, alumina-SiC-carbon, magnesia, magnesia-carbon, etc., carbon, carbonaceous, silicon nitride, zirconia , Calcia, dolomite, chromium, chromium-magnesia, magnesia-lime, magnesia-alumina and combinations thereof can be applied without any problem.

As the binder for curing, alumina cement, phosphate, sodium silicate, clay, resin, and pitch are generally used.
Furthermore, a dispersant is used for the purpose of reducing moisture. Dispersants include phosphate-based (sodium pyrophosphate, sodium tripolyphosphate, sodium hexametaphosphate, sodium acid pyrophosphate, sodium ultrapolyphosphate), carboxylic acid (sodium citrate, sodium gluconate), acrylic acid (poly It can be applied to any material which is a combination of sodium acrylate, polyacrylic acid, polyacrylic acid ester), others (polyalcohol-based, ligninsulfonic acid-based), and the like, and combinations thereof.

In order to adjust the timing of curing, a curing accelerator (rapid curing agent) or a curing retarder may be used.
Hardeners include Na, K, Ca hydroxide, Na, K silicate, dilute sulfuric acid, 0.5-1.0mass% sulfate, nitrate, Li salt, organic bases such as triethanolamine, Portland cement, Alumina cement hydrate is exemplified.
On the other hand, as a retarder, Mg, Ba hydroxide, Na, K, Ba, Mg, Ca chloride, 0.25 wt% or less sulfate, nitrate, citric acid, tartaric acid, glucose acid salt, boron Examples include sand, lead salts, phosphates, sugars, flour, glycerin, glucose, and cellulose.
Although the above chemicals can be used, this is not restrictive.
A hardening accelerator, a hardening retarder, and a dispersing agent may be added when kneading an amorphous refractory when mixing in an alumina cement in advance, when mixing in an amorphous refractory in advance. The quick setting agent, curing accelerator, curing retarder and dispersant are basically used as powder or liquid.

[3] Construction Procedure of Lining Material Next, the construction procedure of the lining material on the ladle T by the construction apparatus 1 described above will be described based on the flowchart shown in FIG.
The construction apparatus 1 is installed so that the cylindrical center of the pan T and the center of the post 12 coincide (step S1).
When the installation position of the construction apparatus 1 is finished, the frame is set at the bottom position of the lowermost stage, and the protruding amount of the mold member 14 is adjusted according to the construction thickness of the lining material to form the mold body (step) S2).

Subsequently, the screw auger 152 is guided by guiding the discharge port 156 of the screw auger 152 to the gap between the inner surface of the pan T and the outer peripheral surface of the mold body (step S3).
A lining material is put into the hopper 153 (step S4), and the screw auger 152 is driven (step S5). The lining material may be input intermittently by an operator, or may be continuously supplied from a tank using a piping member.
When the lining material is discharged from the discharge port 156 of the screw auger 152, the lining material starts to be poured into the gap between the inner surface of the ladle T and the outer peripheral surface of the mold body (step S6).

The screw auger 152 is appropriately rotated during the pouring (step S7), and if necessary, a rod-like vibrator or the like is inserted into the gap portion to vibrate the lining material that has been poured in, so that the lining material is sufficiently spread.
The lining material is poured and rotated by the screw auger 152 as described above until the lining material is poured all around the inner surface of the pan T (step S8).
When the lining material has been poured all around, a horizontal joint spacer 19 is installed on the top surface of the poured lining material (step S9), and the pushing member 17 is projected by operating the hydraulic cylinder 18 to form a vertical joint ( Step S10).

For example, as shown in FIG. 9, the horizontal joint spacer 19 is formed of a plate-like body having an outer peripheral edge formed in an arc shape along the arc of the ladle T and an inner peripheral edge smaller than the circular arc. Those having holes 191 penetrating the front and back surfaces can be employed. The hole 191 is formed when the upper lining material is supplied, so that the hole 191 is filled with the lining material, the joint spacer is fixed by the lining material, and the upper and lower lining materials are joined together. .
The joint spacer may be made of a plate-like porous body made of refractory particles, a board made of ceramic fibers, or a plate-like material made of a mixture of refractory particles and a heat-dissipating substance (for example, refractory mortar and resin are mixed and kneaded. , Or the like formed into a plate shape) can be employed. As refractory particles, alumina, mullite, silica, spinel, magnesia, chrome ore, zircon, zirconia, clay or fired ones such as alumina, mullite, silica, spinel, magnesia, etc. are generally used as refractory raw materials. You can use what you have.
Further, as described above, the formation of the vertical joint by the protrusion of the pushing member 17 is preferably performed according to the cured state of the lining material since the lining material is mixed with the rapid setting agent. The vertical joint may be formed so as to follow the pouring from the portion where the ending is completed.

The pushing member 17 is held for a certain period of time in a protruding state, and the lining material is cured (step S11). After the lining material has been removed to some extent, the pushing member 17 is pulled out from the outer surface of the mold member 14 (step S12).
When it is confirmed that the poured lining material has been cured, the hydraulic cylinder 16 is operated to release the mold members 14 from the lining material construction surface (step S13).
When removal of the mold body is completed, the gantry 13 is raised by a gantry driving mechanism (not shown), and the gantry 13 is slightly rotated (step S14). The amount of rotation at that time is preferably about half of the pitch of the vertical joints. By rotating in this way, a staggered vertical joint can be formed.
After the gantry 13 is raised, the lining material is sequentially poured by repeating the process S2 and thereafter.

By adopting such a lining material construction method according to this embodiment, vertical joints are formed at predetermined intervals in the vertical direction, and horizontal joints are also formed in the horizontal direction. Therefore, it is possible to form a construction surface of a highly durable lining material that is difficult to crack due to shrinkage or the like.
Moreover, since the lining material is poured while mixing the quick setting agent using the screw auger 152, the lining material can be cured in a short time, and the time required for the construction of the lining material can be greatly reduced. Can do.
Furthermore, by performing construction using the construction apparatus 1 described above, the work load on the worker can be greatly reduced, and in some cases, all can be automated.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the following description, members that are the same as members or portions already described are assigned the same reference numerals, and descriptions thereof are omitted.
In the first embodiment described above, as shown in FIG. 6, the pushing member 17 is projected from the outer peripheral surface of the mold member 14 to form the vertical joint.
In contrast, the lining material construction method according to the second embodiment is different in that the vertical joint and the horizontal joint are simultaneously formed by the joint spacer.

As shown in FIG. 10, the joint spacer 21 in the present embodiment is configured in a side L shape including a horizontal portion 211 and a vertical portion 212.
The horizontal portion 211 is a belt-like plate-like body, and one end edge in the width direction of the belt is formed in an arc shape that follows the arc of the inner surface of the cylindrical ladle T that is the work surface, and the other end edge is this It is formed in a concentric arc shape having a smaller radius than the arc. A plurality of holes 213 penetrating the front and back surfaces of the plate-like body are formed in the approximate center of the horizontal portion 211. As with the horizontal joint spacer 19 of the first embodiment, the plurality of holes 213 are used to join the upper and lower lining materials and to fix the joint spacers 21 by the lining material when the upper lining material is poured. Is formed.

The vertical portion 212 is configured as a plate-like body that stands substantially vertically from the end portion in the longitudinal direction of the horizontal portion 211. Like the horizontal portion 212, a plurality of holes 214 that penetrate the front and back surfaces of the plate-like body are formed. .
In addition to the effect aimed by the hole 213 formed in the horizontal portion 211, the hole 214 prevents the lining material from being blocked by the vertical portion 212 when the lining material is poured. It is formed in order to sufficiently wrap the lining material into adjacent portions partitioned by.

  The joint spacer 21 has a horizontal portion 211 and a vertical portion 212 integrally formed, and is made of a plate-like porous body made of refractory particles and ceramic fibers, as in the case of the horizontal joint spacer 19 described above. A board or a plate of a mixture of refractory particles and a heat extinguishing substance (for example, a mixture of refractory mortar and resin kneaded) can be used. As refractory particles, alumina, mullite, silica, spinel, magnesia, chrome ore, zircon, zirconia, clay or fired ones such as alumina, mullite, silica, spinel, magnesia, etc. are generally used as refractory raw materials. You can use what you have.

The joint spacer 21 shown in FIG. 10 is merely an example, and the joint spacer of the present invention is not limited to this. For example, an inverted T-shaped spacer can be adopted. Any material can be used as long as it can be formed simultaneously.
In addition, the width dimension of the joint spacer 21 is arbitrary as long as it can be set on the work surface. However, from the viewpoint of absorbing the hot behavior of the lining material work surface and the workability, It is preferable to set the dimension slightly smaller than the thickness dimension.

When such joint spacers 21 are installed on the work surface, an operator may put them in a box or the like and sequentially install them manually. At this time, it is desirable that sufficient space, handrails, and the like are provided for safety considerations. As shown in FIG. 11, a joint construction device 22 is attached to the post 12 on the construction device 1 so as to be movable up and down, and the joint spacer 21 is removed between the inner surface of the pan T and the formwork using this. It may be possible to set.
The joint construction device 22 includes a support portion 221 that is supported by the post 12 so as to be movable up and down and rotatable, a supply portion 222 that extends vertically and can supply the joint spacer 21 from above, and a lower end of the supply portion 222. A construction part 223 that protrudes to the outside and sets joint spacers 21 on the construction surface is provided. As a result, joint spacers 21 can be continuously supplied, so that workability is greatly improved.

Next, the construction method of the lining material of this embodiment is demonstrated based on the flowchart shown by FIG.
Basically, the steps S1 to S15 are carried out in the same manner as in the first embodiment, but after the positioning step S3 of the screw auger 152, the step S21 of setting the joint spacer 21 to the entire circumference of the construction surface is carried out, Thereafter, the lining material pouring step S6 is performed.
Further, after the cast lining material is hardened and the mold member 14 is removed from the mold, the gantry 13 is rotated when the gantry 13 is raised. In the first embodiment, the gantry 13 is rotated. The point which implements process S22 raised without making it different is different.

By adopting such a lining material construction method, the lining material construction surface can be formed as shown in FIG. 13, and the joint spacers 21 can be formed vertically at predetermined intervals. . In the case of staggered joints, in step S21, the placement position of joint spacers 21 may be arranged by shifting substantially half of the length dimension of joint spacers 21 in the upper and lower stages.
By employing the lining material construction method according to this embodiment, the vertical joint and the horizontal joint can be formed simultaneously by simply setting the joint spacer 21 on the construction surface, thereby further simplifying the construction work. Can be.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.
In 1st Embodiment mentioned above, the vertical joint was formed by making the pushing member 17 protrude from the outer surface of the formwork member 14. As shown in FIG.
On the other hand, in the third embodiment, as shown in FIG. 14, the spacer holding member 23 is protruded from the outer surface of the mold member 14, and the joint spacer 25 is embedded in the lining material. .
The spacer holding member 23 includes a chuck for gripping the end portion of the joint spacer 25, and a hydraulic cylinder 24 is provided on the base end side thereof. The base end of the hydraulic cylinder 24 is supported by the mold member 14, and the spacer holding member 23 and the hydraulic cylinder 24 constitute a holding member advance / retreat mechanism.
The joint spacer 25 is formed of a rectangular plate-like body made of the same material as the horizontal joint spacer 19 in the first embodiment described above, but the hole 191 is not formed unlike the horizontal joint spacer 19.

When the lining material is constructed with the construction apparatus having such a spacer holding member advance / retreat mechanism, as shown in FIG. 15, the steps S1 to S15 are performed in the same manner as in the first embodiment. After the completion of pouring, a step S31 of operating the hydraulic cylinder 24 to project the spacer holding member 23 to embed the joint spacer 25 in the lining material, and a step of pulling out the spacer holding member 23 from the outer surface of the mold member 14 immediately after the filling. The difference is that S32 is executed.
Further, the timing of embedding the joint spacers 25 is different from the case of the first embodiment. Immediately after the lining material is poured, that is, while the lining material is soft, the joint spacers 25 are easily embedded in the lining material. It is preferable because it is possible.
As the joint spacers in the second and third embodiments, it is desirable to use the above-mentioned amorphous refractory dried and solidified. In this case, even if a crack starting point is generated in the joint due to a difference in shrinkage from the lining material, it is considered that the stress is released at the discontinuous surface, so that it is less likely to cause cracking or chipping.
Therefore, according to the second and third embodiments, the same or more operational effects as those of the first embodiment can be obtained.

The side view showing the construction apparatus of the lining material which concerns on 1st Embodiment of this invention. The side view showing the construction apparatus of the lining material in the said embodiment. The top view showing the construction apparatus of the lining material in the said embodiment. The top view and side view showing the structure of the mount frame in the said embodiment. The top view and side view showing the structure of the mount frame and formwork member in the said embodiment. The top view showing the structure of the pushing member advance / retreat mechanism in the said embodiment. Sectional drawing showing the structure of the lining material discharge mechanism in the said embodiment. The flowchart showing the process of the construction method of the lining material in the said embodiment. The top view showing the structure of the horizontal joint spacer in the said embodiment. The perspective view showing the structure of the joint spacer used for the construction method of the lining material which concerns on 2nd Embodiment of this invention. The side view showing the construction apparatus of the lining material in the said embodiment. The flowchart showing the process of the construction method of the lining material in the said embodiment. The front view showing the lining material construction surface constructed | assembled by the construction method of the lining material in the said embodiment. The top view showing the structure of the holding member advance / retreat mechanism in the said embodiment. The flowchart showing the process of the construction method of the lining material in the said embodiment.

Explanation of symbols

1 ... construction unit, 11 ... base, 12 ... post, 13 ... frame, 14 ... frame members, 15 ... lining material discharge mechanism, 16 ... hydraulic cylinder, 17 ... pushing member, 18 ... hydraulic cylinder, 19 ... horizontal joint Spacer, 21 ... Joint spacer, 22 ... Joint construction device, 23 ... Spacer holding member, 24 ... Hydraulic cylinder, 25 ... Joint spacer, 131 ... Support guide, 132 ... Formwork member holder, 133 ... Bottom substrate, 134 ... Guide Groove, 151 ... rotating table, 152 ... screw auger, 153 ... hopper, 154 ... cylindrical body, 155 ... screw, 156 ... discharge port, 156 '... charging port, 157 ... pulley, 158 ... motor, 159 ... curing aid inlet, 191 ... hole, 211 ... horizontal section, 212 ... vertical portion, 2 13 ... hole, 214 ... hole, 221 ... support portion, 222 ... supply portion, 223 ... construction unit, L ... La Training material, T ... ladle

Claims (14)

A lining material construction method in which a lining material is constructed by pouring into the inner surface of a cylindrical container that expands in diameter toward the top ,
A step of forming a plurality of mold members having a height dimension smaller than the depth dimension of the container concentrically around the center of the container cylinder to form a mold body spaced apart from the inner surface of the container by a fixed dimension. Carried out, then
Pouring a lining material containing a rapid setting agent along the circumferential direction into the gap between the inner surface of the container and the outer surface of the mold body; and
After the poured lining material is cured, the step of separating the plurality of mold members from the construction surface of the lining material and demolding the mold body;
The plurality of mold members are raised, and the process from forming the mold body to the process of removing the mold body are alternately and repeatedly performed.
A method for constructing a lining material, comprising performing a step of forming joints having a predetermined shape on the poured lining material either before or after the step of pouring the lining material. In the construction method of the lining material of Claim 1,
The step of forming the joint is performed as a pre-step of the step of pouring each of the lining materials,
By placing a joint spacer having a plate-like horizontal portion and a plate-like vertical portion standing vertically from this horizontal portion on the upper surface of the part where the lower lining material is constructed, and pouring the lining material, A method for constructing a lining material characterized by forming vertical joints. In the construction method of the lining material of Claim 1,
The step of forming the joint is performed as a subsequent step of the step of pouring each of the lining materials,
Construction of lining material characterized in that a vertical joint is formed by projecting a plate-like pushing member from the outer surface of each formwork member into the poured lining material and forming a cut on the construction surface of the lining material Method. In the construction method of the lining material of Claim 1,
The step of forming the joint is performed as a subsequent step of the step of pouring each of the lining materials,
A plate-like joint spacer is projected from the outer surface of the mold member into the poured lining material,
A method for constructing a lining material, wherein a longitudinal joint is formed by embedding the joint spacer in a lining material. In the construction method of the lining material according to claim 3 or claim 4,
A method for constructing a lining material, wherein a step of forming a horizontal joint by arranging plate-like joint spacers on the upper surface of the poured lining material is carried out. In the construction method of the lining material in any one of Claims 1 thru | or 5,
The construction method of a lining material, wherein the height of the mold member is 300 mm to 1000 mm. In the construction method of the lining material in any one of Claims 1 thru | or 6,
A jointing method for forming a lining material, wherein a joint is formed by pouring the lining material while combining the raising and turning of the mold body. A lining material construction device for constructing a lining material by pouring into the inner surface of a cylindrical container that expands in diameter toward the top ,
A post disposed in the center of the container cylinder and extending in a vertical direction;
A disk-shaped pedestal supported by the post so as to be movable up and down;
A platform raising / lowering mechanism for raising and lowering the platform along the post;
A plurality of formwork members arranged so that both ends thereof overlap each other along the outer peripheral edge of the frame, and are provided so as to be able to advance and retreat in the radial direction of the disk of the frame;
A formwork advancing / retreating mechanism for advancing and retreating each formwork member from the outer peripheral edge of the frame;
A lining material construction apparatus comprising the joint forming means for forming joints at predetermined intervals. In the lining material construction apparatus according to claim 8,
The joint forming means is
A lining material characterized by having a function of installing a joint spacer having a plate-like horizontal portion and a plate-like vertical portion standing vertically from the horizontal portion between the inner surface of the container and the formwork Construction equipment . In the lining material construction apparatus according to claim 8,
The joint forming means is
A pushing member for joint cutting provided so as to be able to advance and retreat in the out-of-plane direction from the outer surface of the mold member;
A lining material construction apparatus comprising: a pushing member advancing / retreating mechanism for advancing and retracting the pushing member with respect to the outer surface of the mold member. In the lining material construction apparatus according to claim 8,
The joint forming means is
A spacer holding member that is provided so as to be movable forward and backward in an out-of-plane direction from the outer surface of the mold member, and holds joint spacers for forming vertical joints;
A lining material construction apparatus comprising a holding member advancing / retreating mechanism for advancing / retreating the spacer holding member with respect to the outer surface of the mold member. In the lining material construction apparatus according to any one of claims 8 to 11,
A lining material construction apparatus comprising a gantry rotating mechanism for rotating the gantry around the post. In the lining material construction apparatus according to any one of claims 8 to 12,
A lining material construction apparatus, comprising: a lining material discharge mechanism which is provided on the gantry, is rotatably supported by the post, and discharges the lining material. A joint spacer for lining material construction that is used in a lining material construction method in which a lining material is constructed by pouring into the inner surface of a cylindrical container that expands in diameter toward the top. ,
One edge in the width direction is formed in an arc shape that follows the arc of the inner surface of the container, and the other end edge is formed in a concentric arc shape having a smaller radius than the arc, and a plate-like horizontal portion,
With a plate-like vertical part rising from this horizontal part,
A joint spacer for lining material construction, wherein the horizontal portion and the vertical portion are formed with holes penetrating the plate-like front and back surfaces.

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