WO2014041658A1

WO2014041658A1 - Method for producing solidified sulfur, and apparatus for producing solidified sulfur

Info

Publication number: WO2014041658A1
Application number: PCT/JP2012/073461
Authority: WO
Inventors: 義文富永; 山口　泰範; 真仁福島; 善久山下; 山▲崎▼　浩一; 伸悦阿曽
Original assignee: 不二コンクリート工業株式会社; 日本ゼニスパイプ株式会社
Priority date: 2012-09-13
Filing date: 2012-09-13
Publication date: 2014-03-20
Also published as: KR101528322B1; RU2013157945A; JPWO2014041658A1; KR20140065379A; JP5536290B1

Abstract

A method for producing solidified sulfur, comprising: a warming step of warming at least the inside part of a mold form having an approximately circular cross-section and having a given space formed therein to a temperature equal to or higher than the melting point of sulfur; and a molten-sulfur-containing material introduction step of introducing a molten-sulfur-containing material, which is a material containing molten sulfur, into the inside of the mold form while rotating the mold form that has been warmed in the warming step.

Description

Method for producing sulfur solidified body and apparatus for producing sulfur solidified body

The present invention relates to a method for producing a sulfur solidified body and a sulfur solidified body producing apparatus. Specifically, the present invention relates to a method for producing a sulfur solidified body and a sulfur solidified body producing apparatus used for various structures.

Sulfur solidified body (sulfur material) obtained by cooling and solidifying molten sulfur-containing material containing molten sulfur and aggregates is called “sulfur concrete”, which has higher strength, acid resistance, Since it is excellent in terms of corrosion resistance, it tends to be used in various structures for harbor civil engineering, fisheries, and sewerage.

As a method for producing a sulfur solidified body, for example, Patent Document 1 discloses that a material containing coarse aggregate preheated to 120 to 200 ° C., 100 parts by mass of fine aggregate having a particle size of 5 mm or less, sulfur and / or modified. There is a method for producing a sulfur material that contains 30 to 400 parts by mass of a sulfur material composed of carbonaceous sulfur, is charged with a melt of an intermediate sulfur material having a maximum dimension of 101.6 mm or less with a JIS standard sieve, and is mixed and then solidified. Are listed.
Patent Document 1 describes a method of solidifying by cooling into a mold as a specific method of solidification, and describes that vibration is appropriately applied to the molding at the time of solidification. .

JP 2005-82475 A

However, as described in Patent Document 1, in the method of simply pouring into the mold and applying vibration, when the melt of the sulfur intermediate material is rapidly cooled and cured by the mold, due to the contraction of sulfur, Since voids remain on the surface in contact with the formwork, a defective portion is generated in the obtained sulfur solidified body, and a large amount of labor is required for finishing work for repairing the defective portion.

The present invention was devised in view of the above points, and is capable of producing a sulfur solidified body with high surface accuracy with reduced defects and a sulfur solidified body production method and sulfur solidified body production apparatus. The purpose is to provide.

In order to achieve the above object, the method for producing a sulfur solidified body according to the present invention is such that at least the inner part of a mold having a substantially circular cross section and a predetermined space formed therein has a melting point of sulfur or higher. A heating process for heating, and a molten sulfur-containing material in which a molten sulfur-containing material, which is a material containing molten sulfur, is introduced into the mold while rotating the mold heated in the heating process. And a charging process.

Here, by heating at least the inner part of the mold above the melting point of sulfur, the inner part of the mold that contacts the molten sulfur-containing material is heated above the melting point of sulfur. It is possible to suppress solidification by being rapidly cooled and solidify gradually.

In addition, the molten sulfur-containing material is introduced into the mold while rotating the mold, so the molten sulfur-containing material is solidified while being uniformly pressed against the inner surface of the mold by centrifugal force, and the surface is solidified with sulfur. The body can be manufactured.

Further, in the method for producing a sulfur solidified body of the present invention, the temperature of the inner surface opposite to the outer surface which is the surface in contact with the semi-solidified formwork in which the molten sulfur-containing material is partially solidified is 110 to 115. When it is at 0 ° C., it can be provided with a finishing step of smoothing the inner surface with a spatula.

In this case, when the temperature of the inner surface of the semi-solidified body is 110 to 115 ° C, it is not completely solidified, so the inner surface can be smoothed by pressing with a spatula, and finishing after removing the sulfur solidified body from the formwork Work can be greatly reduced.

In the method for producing a sulfur solidified body of the present invention, when the inner surface is reheated and smoothed by pressing the inner surface with a spatula, even after the inner surface is completely solidified, the finishing step is again performed by reheating. It can be softened to smooth the inner surface.

Moreover, in the manufacturing method of the sulfur solidified body of this invention, a finishing process is rotating with the centrifugal force of 5G or more, when pressing and smoothing an inner surface with a spatula while rotating a formwork with a centrifugal force of 5G or more. Therefore, a sufficient centrifugal force can be applied to the semi-solidified body, and the non-solidified portion of the semi-solidified body can be made uniform.

In the method for producing a sulfur solidified body of the present invention, when the finishing step is smooth by pressing the inner surface with a spatula with a heating function, a spatula without a heating function is used by using the spatula with a heating function. Compared to the case, the solidified molten sulfur-containing material is less likely to adhere to the spatula, and it is possible to suppress a decrease in the surface accuracy of the sulfur solidified body.

Further, in the method for producing a sulfur solidified body of the present invention, when the heating step is heated while rotating the mold, a uniform heating temperature is obtained, and at least the inner part of the mold is equal to or higher than the melting point of sulfur. Time until heating can be shortened.

Further, in the method for producing a sulfur solidified body of the present invention, when the heating step is to be 120 to 150 ° C., the temperature of the mold is suppressed to 150 ° C. or lower. It is possible to suppress loss of fluidity due to deterioration.

In order to achieve the above-mentioned object, the sulfur solidified body production apparatus of the present invention has a sulfur melting point at least an inner part of a mold having a substantially circular cross section and a predetermined space formed therein. A heating unit that heats the above, a rotating unit that rotates the mold, and a molten sulfur-containing material that is a material containing molten sulfur are placed inside the mold that is rotated by the rotating unit. A molten sulfur-containing material input section.

Here, since the inner part of the mold that is in contact with the molten sulfur-containing material is heated above the melting point of sulfur by the heating part that heats at least the inner part of the mold above the melting point of sulfur, It is possible to suppress the material from being rapidly cooled and solidify to be gradually solidified.

In addition, the molten sulfur-containing material charging unit for charging the molten sulfur-containing material into the rotated formwork solidifies the molten sulfur-containing material while being uniformly pressed against the inner surface of the formwork by centrifugal force. A uniform sulfur solidified body can be produced.

The method for producing a sulfur solidified body according to the present invention can produce a sulfur solidified body with high surface accuracy with reduced defects.
The apparatus for producing a sulfur solidified body according to the present invention can produce a sulfur solidified body with reduced surface portions and high surface accuracy.

It is a schematic flowchart of the manufacturing method of the sulfur solidified body to which this invention is applied. It is the schematic for demonstrating an example of the heating process of the formwork in the manufacturing method of the sulfur solidified body to which this invention is applied. It is the schematic which shows an example of the molten sulfur containing material injection machine used in the molten sulfur containing material injection | throwing-in process of the manufacturing method of the sulfur solidified body to which this invention is applied. It is a schematic sectional drawing of the principal part of the molten sulfur containing material injection machine shown in FIG. It is the schematic for demonstrating an example of the molten sulfur containing material injection | throwing-in process in the manufacturing method of the sulfur solidified body to which this invention is applied. It is the schematic for demonstrating an example of the finishing process in the manufacturing method of the sulfur solidified body to which this invention is applied. It is the schematic which shows an example of the spatula with a heater used in a finishing process.

Hereinafter, embodiments of the present invention will be described with reference to the drawings to facilitate understanding of the present invention.
FIG. 1 is a schematic flow diagram of a method for producing a sulfur solidified body to which the present invention is applied.

In the method for producing a sulfur solidified body to which the present invention is applied, at least an inner part of a mold having a substantially circular cross section and having a predetermined space formed therein is heated to a melting point (119 ° C.) or higher of sulfur. A molten sulfur-containing material that is a material (including aggregates) containing molten sulfur inside the mold while rotating the mold heated in the heating process (step S1) and the heating process. The temperature of the inner surface opposite to the outer surface, which is the surface in contact with the mold of the semi-solidified body in which the molten sulfur-containing material is partially solidified, and the molten sulfur-containing material charging step (step S2) And a finishing step (step S3) for smoothing the inner surface with a spatula at 115 ° C.

FIG. 2 is a schematic diagram for explaining an example of a heating process of a mold in the method for producing a sulfur solidified body to which the present invention is applied.
As shown in FIG. 2, the heating process of the mold in the method for producing a sulfur solidified body to which the present invention is applied includes the mold 2 having a substantially circular cross section and a predetermined space formed therein. The mold is heated to 120 to 150 ° C. by heating with the gas burner 3 while being rotated by the rotating unit 4.

At this time, at least the inner part of the mold 2 (the part where the molten sulfur-containing material comes into contact) is heated to the melting point of sulfur (119 ° C.) or higher.
Further, as long as the mold can be heated, the gas burner is not necessarily used. For example, an electric heater can be used.

The rotating unit 4 includes a shaft rod 4C, a first rotating wheel 4A attached to one end side of the shaft rod 4C, a second rotating wheel 4B attached to the other end side of the shaft rod 4C, The shaft rod 4C is rotated via the rotation belt 4E hooked on the rod 4C, and as a result, the first rotation wheel 4A and the second rotation wheel 4B are rotated in the rotation direction 2A.

Further, two shaft rods 4C to which the first rotating wheel 4A and the second rotating wheel 4B are respectively attached are arranged substantially in parallel with each other, and both ends are fixed to the wheel base 5 so as to be rotatable.
Two rotary motors 4D are also arranged, but only one of them is shown in the figure.

Further, as shown in FIG. 2, the mold 2 is placed on two first rotating wheels 4A arranged in parallel to each other and two second rotating wheels 4B arranged in substantially parallel to each other. Has been.

Since the mold frame 2 is placed on the pair of first rotating wheels 4A and the pair of second rotating wheels 4B in this way, the first rotating wheel 4A and the second rotating wheel 4B are rotated. By doing so, the mold 2 can be rotated in the rotation direction 2A, for example.
At this time, the rotation speed of the mold 2 can be, for example, 50 to 60 times / minute.

FIG. 3 is a schematic view showing an example of a molten sulfur-containing material charging machine used in the molten sulfur-containing material charging process of the method for producing a sulfur solidified body to which the present invention is applied. FIG. 4 is a schematic cross-sectional view of the main part of the molten sulfur-containing material charging machine shown in FIG.

The molten sulfur-containing material charging machine 6 is connected to the hopper 7 into which the molten sulfur-containing material is put, the hopper support frame 8 that supports the hopper 7, and the lower part of the hopper 7, and the inside of the hopper 7 is connected to the inside. And a sending unit 9.

Also, two front wheels 8A and two rear wheels 8B are attached to the lower four corners of the hopper support frame 8.

Further, the molten sulfur-containing material charging machine 6 is mounted on a movable table 10 on which a first hopper support frame rail 10C and a second hopper support frame rail 10D are provided.

Here, one front wheel 8A and one rear wheel 8B are placed on the first hopper support frame rail 10C, and the other front wheel 8A and the other rear wheel 8B are placed on the second hopper support frame rail 10D. Put it on.

Thereby, the molten sulfur-containing material charging machine 6 can move in the horizontal direction 8C on the moving table 10.

Further, two front wheels 10A and two rear wheels 10B are attached to the lower part of the movable table 10. Further, for example, a first moving table rail 11 and a second moving table rail 12 are provided substantially parallel to each other on the floor surface, and the front wheel 10A of the moving table 10 is placed on the first moving table rail 11. The rear wheel 10 </ b> B of the moving table 10 is mounted on the second moving table rail 12.

Thereby, the movable table 10 on which the molten sulfur-containing material charging machine 6 is placed can move in the vertical direction 10E.

Further, on the upper surface of the hopper 7, a material input port 7B for supplying molten sulfur-containing material into the hopper 7 is formed, and a lid 7A covering the material input port 7B is attached along the material input port 7B. ing.

FIG. 4 is a schematic cross-sectional view of the hopper 7 and the delivery unit 9 that are the main parts of the molten sulfur-containing material charging machine 6.
As shown in FIG. 4, the inside of the hopper 7 and the inside of the delivery part 9 are connected, and the delivery part 9 is connected to the lower part of the hopper 7, so that the molten sulfur containing inside the hopper 7 is contained. The material can be moved into the delivery unit 9 by gravity or the like.

As shown in FIG. 4, a heater 13 is attached to the innermost side of the hopper 7, and a heat insulating material 14 is attached to the outside of the heater 13, that is, between the heater 13 and the wall surface of the hopper 7. It has been.

Further, as shown in FIG. 4, the delivery unit 9 is disposed inside the screw case 9 </ b> A provided with the discharge port 9 </ b> C through which the molten sulfur-containing material is discharged, and is moved by the drive motor 15. And a screw 9B for feeding the molten sulfur-containing material to the discharge port 9C.

Further, as shown in FIG. 4, a heater 13 is also attached to the innermost side of the screw case 9A, and a heat insulating material 14 is also attached to the outside of the heater 13, that is, between the heater 13 and the screw case 9A. ing.

Thus, since the heater 13 and the heat insulating material 14 are attached to the inside of the hopper 7 and the screw case 9A of the delivery unit 9, the inside of the hopper 7 and the delivery unit 9 is heated to 120 to 150 ° C., for example. The molten sulfur-containing material can be put into the mold while maintaining fluidity without causing solidification due to a rapid temperature drop.
As a result, the molten sulfur-containing material becomes uniform, and a high-quality sulfur solidified body can be produced.

As shown in FIG. 4, a valve 16 for adjusting the amount of the molten sulfur-containing material transferred from the hopper 7 to the delivery unit 9 is disposed at the communication port between the hopper 7 and the delivery unit 9.

FIG. 5 is a schematic view for explaining an example of a molten sulfur-containing material charging step in the method for producing a sulfur solidified body to which the present invention is applied.
As shown in FIG. 5, while the mold 2 heated in the heating process is rotated in the rotation direction 2 </ b> A, the sending unit 9 of the molten sulfur-containing material charging machine 6 is inserted into the mold 2 to melt the sulfur. Input the contained materials.

In addition, since the molten sulfur-containing material charging machine 6 can move in the horizontal direction 8C on the moving table 10, the discharge port 9C of the delivery unit 9 is moved to a desired position in the longitudinal direction of the mold 2. The molten sulfur-containing material can be introduced into the mold 2.

As shown in FIG. 5, the sulfur solidified body manufacturing apparatus 1 to which the present invention is applied has at least an inner portion of a mold 2 having a substantially circular cross section and a predetermined space formed therein. A gas burner (heating unit) 3 for heating above the melting point is provided.

Moreover, the manufacturing apparatus 1 of the sulfur solidified body to which this invention is applied is provided with the rotation part 4 which rotates the formwork 2. FIG.
Here, the rotating unit 4 includes a shaft rod 4C, a first rotating wheel 4A attached to one end side of the shaft rod 4C, a second rotating wheel 4B attached to the other end side of the shaft rod 4C, The rotating shaft 4C is rotated via the rotating belt 4E hooked on the rod 4C, and as a result, the rotating motor 4D that rotates the first rotating wheel 4A and the second rotating wheel 4B in the rotation direction 2A is provided. .

Moreover, the sulfur solidified body manufacturing apparatus 1 to which the present invention is applied includes a molten sulfur-containing material charging machine (a molten sulfur-containing material input device) that inputs a molten sulfur-containing material into a mold 2 rotated by a rotating unit 4. Part) 6.

FIG. 6 is a schematic diagram for explaining an example of a finishing step in the method for producing a sulfur solidified body to which the present invention is applied. FIG. 7 is a schematic view showing an example of a spatula with a heater used in the finishing process.

Before the molten sulfur-containing material is introduced, at least the inner part of the mold 2 is heated to the melting point of sulfur (119 ° C.) or more, but the mold 2 and the molten sulfur-containing material gradually decrease in temperature. As a result, the molten sulfur-containing material begins to solidify as the temperature decreases.

In addition, by the heating step and the molten sulfur-containing material input step of the method for producing a sulfur solidified body to which the present invention is applied, it is possible to produce a sulfur solidified body with high surface accuracy with reduced defects, but the solidification process Therefore, since the shrinkage phenomenon of sulfur occurs on the inner surface of the semi-solidified body in which the molten sulfur-containing material is partially solidified, the inner surface of the semi-solidified body is required to produce a sulfur solidified body with higher surface accuracy. It is preferable to perform a finishing process of smoothing by pressing with a spatula.

Therefore, in the method for producing a sulfur solidified body to which the present invention is applied, the temperature of the inner surface opposite to the outer surface, which is the surface in contact with the semi-solidified formwork in which the molten sulfur-containing material is partially solidified, is 110. At ~ 115 ° C, it has a finishing process to smooth the inner surface with a spatula.

Specifically, a finishing process is performed using a spatula 18 with a heater, a part of which is omitted in FIG. As shown in FIG. 7, the spatula with heater 18 includes a rod-shaped main body 18A, a steel plate-like spatula portion 18D attached to one end of the main body 18A, and a heat insulating material attached to the other end of the main body 18A. And a transformer 18F connected to the main body 18A.

The main body 18A is obtained by winding a heat-resistant rod 18B with a heat insulating material. In addition, an electric heater 18C is attached to the heat-resistant rod 18B at a position close to the spatula portion 18D, and the spatula portion 18D can be heated.

Then, the spatula portion 18D of the spatula 18 with a heater is inserted into the mold 2 that is rotated by a pair of first rotating wheels 4A or the like with a centrifugal force of 5G or more, preferably a centrifugal force of 5G or more and 15G or less, The inner surface of the semi-solidified body 17 of the molten sulfur-containing material is pressed and smoothed by the spatula portion 18D, and the finishing process is performed.

Further, when the temperature of the inner surface of the semi-solidified body is 110 to 115 ° C, the inner surface may be smoothed by pressing with a spatula, so that even if the temperature of the inner surface of the semi-solidified body falls below 110 ° C, the gas The inner surface of the semi-solidified body can be reheated with a burner or the like to raise the temperature of the inner surface of the semi-solidified body to 110 to 115 ° C., and the inner surface of the semi-solidified body can be smoothed by pressing with a spatula.

Here, in the method for producing a sulfur solidified body to which the present invention is applied, heating is performed by heating at least an inner part of a mold having a substantially circular cross section and having a predetermined space formed therein to a temperature equal to or higher than the melting point of sulfur. And a molten sulfur-containing material charging step for charging molten sulfur-containing material, which is a material containing molten sulfur, into the inside of the mold while rotating the mold heated in the heating process. If necessary, the finishing step is not necessarily required.

However, it is preferable to perform the finishing step because a sulfur solidified body with higher surface accuracy can be produced and the finishing work after the sulfur solidified body is taken out from the mold can be greatly reduced.

In addition, the finishing process does not necessarily have to be performed using a spatula with a heating function, but by using a spatula with a heating function, solidified molten sulfur-containing material than when a spatula without a heating function is used. Is preferable because it is difficult to adhere to the spatula and the surface accuracy of the sulfur solidified body can be prevented from being lowered.

Further, the finishing step does not necessarily have to be performed while rotating the mold with a centrifugal force of 5 G or more. However, if the inner surface is pressed with a spatula and smoothed while the mold is rotated with a centrifugal force of 5 G or more, the finishing process is 5 G or more. Therefore, a sufficient centrifugal force can be applied to the semi-solidified body, and the non-solidified portion of the semi-solidified body can be made uniform, which is preferable.

Further, the heating step does not necessarily have to be performed while rotating the mold, but if the heating is performed while rotating the mold, a uniform heating temperature can be obtained, and at least the inner part of the mold can be obtained. It is preferable because the time required for heating to the melting point of sulfur or higher can be shortened.

Further, the method for producing a sulfur solidified body to which the present invention is applied is a heating method in which at least an inner part of a mold having a substantially circular cross section and having a predetermined space formed therein is heated above the melting point of sulfur. And a molten sulfur-containing material charging step for charging molten sulfur-containing material, which is a material containing molten sulfur, into the mold while rotating the mold heated in the heating process. For example, another process may be provided before and after the heating process and before and after the molten sulfur-containing material charging process.

As described above, the method for producing a sulfur solidified body of the present invention heats at least the inner part of a mold having a substantially circular cross section and a predetermined space formed therein to a temperature equal to or higher than the melting point of sulfur. The inner part of the mold that is in contact with the molten sulfur-containing material is heated to a temperature higher than the melting point of sulfur, and the molten sulfur-containing material is prevented from being rapidly cooled and solidified to be gradually solidified.

Further, in the method for producing a sulfur solidified body of the present invention, the molten sulfur-containing material, which is a material containing molten sulfur, is introduced into the mold while rotating the mold heated in the heating step. The molten sulfur-containing material is solidified while being uniformly pressed to the inner surface of the mold by centrifugal force, and a sulfur solidified body having a uniform surface can be produced.

Therefore, the shrinkage phenomenon of sulfur is greatly suppressed, and the method for producing a sulfur solidified body of the present invention can produce a sulfur solidified body with a reduced surface area and high surface accuracy (smooth surface).

In addition, the sulfur solidified body manufacturing apparatus of the present invention includes a heating unit that heats at least an inner part of a mold having a substantially circular cross section and a predetermined space formed therein to a melting point of sulfur or higher. Since it is provided, the inner part of the mold that is in contact with the molten sulfur-containing material is heated above the melting point of sulfur, the molten sulfur-containing material is rapidly cooled and solidification starts, and solidification can be performed gradually. .

In addition, the sulfur solidified body production apparatus of the present invention includes a molten sulfur-containing material input unit that inputs molten sulfur-containing material, which is a material containing molten sulfur, into the mold that is rotated by the rotating unit. Therefore, the molten sulfur-containing material is solidified while being uniformly pressed to the inner surface of the mold by centrifugal force, and a sulfur solidified body having a uniform surface can be produced.

Therefore, the shrinkage phenomenon of sulfur is greatly suppressed, and the sulfur solidified body production apparatus of the present invention can produce a sulfur solidified body having a reduced surface area and high surface accuracy (smooth surface).

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus of sulfur solidified body 2 Formwork 2A Rotating direction 3 Gas burner 4 Rotating part 4A 1st rotating wheel 4B 2nd rotating wheel

4C Axle rod

4D Rotating motor 4E Rotating belt 5 Wheel base 6 Molten sulfur containing material input Machine 7 Hopper 7A Lid 7B Material inlet 8 Hopper support frame

8A Front wheel

8B Rear wheel

8C Lateral direction 9 Outlet

9A Screw case 9B Screw

9C Discharge port 10 Moving table 10A Front wheel 10B Rear wheel 10C Rail for first hopper support frame 10D Rail for second hopper support frame 10E Longitudinal direction 11 Rail for first moving table 12 Rail for second moving table 13 Heating heater 14 Heat insulating material 15 Drive motor 16 Valve 17 Semi-solidified body of molten sulfur-containing material 18 Heater Spatula 18A body 18B heat rod 18C electric heater 18D spatula part 18E gripper 18F transformer per

Claims

A heating step of heating at least the inner part of the mold having a substantially circular cross section and having a predetermined space formed therein to a temperature equal to or higher than the melting point of sulfur;
A molten sulfur-containing material charging step for charging a molten sulfur-containing material, which is a material containing molten sulfur, into the mold frame while rotating the mold frame heated in the heating step. Manufacturing method.
When the temperature of the inner surface opposite to the outer surface, which is the surface in contact with the mold, of the semi-solidified material in which the molten sulfur-containing material is partially solidified is 110 to 115 ° C., the inner surface is covered with a spatula. The method for producing a sulfur solidified body according to claim 1, further comprising a finishing process for pressing and smoothing.
The method for producing a sulfur solidified body according to claim 2, wherein in the finishing step, the inner surface is reheated and the inner surface is pressed and smoothed with a spatula.
The method for producing a sulfur solidified body according to claim 2, wherein in the finishing step, the inner surface is pressed with a spatula while the mold is rotated at a centrifugal force of 5 G or more to make it smooth.
The method for producing a sulfur solidified body according to claim 2, wherein in the finishing step, the inner surface is smoothed by a spatula with a heating function.
The method for producing a sulfur solidified body according to claim 1, wherein the heating step is performed while heating the mold.
The method for producing a solidified sulfur according to claim 1, wherein in the heating step, the mold is set to 120 to 150 ° C.
A heating unit that heats at least an inner part of a mold having a substantially circular cross-sectional shape and a predetermined space formed therein to a melting point of sulfur or higher;
A rotating part for rotating the formwork;
An apparatus for producing a sulfur solidified body, comprising: a molten sulfur-containing material input unit that inputs a molten sulfur-containing material, which is a material containing molten sulfur, into the mold frame rotated by the rotating unit.