JPH0717751A - Cement clinker manufacturing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] A cement clinker manufacturing device that can lower the firing temperature of cement clinker, which produces pollution prevention effects and cost reduction effects, and is high even when fired at low temperatures without adding flux. The purpose is to obtain a strong mortar or concrete. [Structure] A cement clinker manufacturing apparatus is configured to include at least one rapid temperature rising furnace for heating a cement clinker raw material at a temperature rising rate of 100 ° C./min or more. The rapid heating furnace in the cement clinker manufacturing apparatus is configured to raise the temperature from at least the preheating temperature to the firing reaction temperature. Further, the rapid temperature raising furnace in the cement clinker manufacturing apparatus may raise the temperature at a temperature raising rate of 100 ° C./min or more, raise the temperature to 1300 to 1400 ° C., and then maintain the temperature in this temperature range. Configure so that you can.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing cement clinker capable of lowering the firing temperature of cement clinker.

[0002]

2. Description of the Related Art Conventionally, Portland type cement clinker is mainly used in a rotary kiln (rotary firing furnace) and the temperature is 1
It is baked at about 400 to 1600 ° C. That is,
Firing is aimed at a firing temperature of 1500 ° C., and the allowable firing temperature range in this case is about 50 to 100 ° C., and maintaining the firing temperature is a heavy burden not only on energy cost but also on pollution prevention. There is.

As shown in FIG. 6, a conventional cement clinker manufacturing apparatus includes a preheating device 1 in which preheating furnaces are combined in a plurality of stages, and a calcination furnace 2 for calcination of raw materials preheated by the preheating device 1. A rotary kiln 3 for calcining the calcined raw material to form a clinker, a clinker cooler 4 for cooling the calcined clinker, and a clinker cooler 4
And a blower 5 for blowing cooling air.

And, the cooled cement clinker is
After that, it is conveyed to a commercialization process (not shown), pulverized and classified, and commercialized. When firing the cement clinker in such a cement clinker manufacturing apparatus, the cement clinker raw material is heated at a temperature of 8 in the preheating device 1 and the calcining furnace 2.
The temperature is raised to 00 to 900 ° C. and charged into the rotary kiln 3 to raise the temperature to about 1500 ° C. In this rotary kiln 3, since the thermal conductivity to the raw material is low,
Since it takes at least 10 minutes or more to raise the temperature to 0 to 1400 ° C, the rate of temperature rise is about 50 ° C / min or less.

[0005]

In the firing technique using the above conventional manufacturing apparatus, the cement clinker is fired at about 1500 ° C., which saves energy in the manufacturing apparatus and nitrogen oxidation. The firing temperature is 1300 to 1400 ° C in order to reduce pollution by reducing substances.
It is desirable to fire at a lower temperature, but for firing at a low temperature, chlorine-based flux must be added or the firing time must be lengthened, so pollution prevention and cost reduction There is a problem that the mortar and concrete using cement produced by low temperature firing with long firing time have low strength.

The present invention is intended to solve the above-mentioned problems in the prior art, and a problem therefor is to produce a pollution prevention effect and a cost reduction effect, which is high even if it is fired at a low temperature without adding a flux. It is an object of the present invention to provide a cement clinker manufacturing apparatus that produces a cement clinker that can obtain a strong mortar or concrete.

[0007]

In order to achieve the above object, the present invention configures a cement clinker manufacturing apparatus like the apparatus of the embodiment shown in FIG. Here, in the cement clinker manufacturing apparatus, after the cement clinker raw material is charged, the cement clinker raw material is preheated, calcined, and then fired to produce a cement clinker. It is characterized in that at least one rapid heating furnace for raising the temperature at a temperature rate is provided.

The rapid heating furnace in the cement clinker manufacturing apparatus is characterized in that it can raise the temperature from at least the preheating temperature to the firing reaction temperature. Further, the rapid temperature rising furnace in the cement clinker manufacturing apparatus heats up at a temperature rising rate of 100 ° C./min or more to a temperature range of 1300 to 1400 ° C.,
It is characterized in that it can be maintained in this temperature range.

The rapid heating furnace in the cement clinker manufacturing apparatus is any one of a fluidized bed furnace, a spouted bed furnace, a spouted fluidized bed furnace, a plasma furnace, and an electromelting furnace. Further, the cement clinker manufacturing apparatus is characterized in that the raw material for cement clinker is charged into the firing furnace (13) via at least one rapid temperature rising furnace (12).

The cement clinker manufacturing apparatus is characterized in that the firing furnace is a rotary kiln. And again, in the cement clinker manufacturing device,
The firing furnace is any one of a fluidized bed furnace, a spouted bed furnace, a spouted fluidized bed furnace, a plasma furnace, and an electromelting furnace.

[0011]

With this configuration, when the cement clinker manufacturing apparatus is applied, the raw material for cement clinker charged into the rapid heating furnace is heated at a temperature rising rate of 100 ° C./min or more, and the charged raw material is quickly supplied. Then, the temperature is raised above the melt reaction temperature to proceed with the firing reaction.

Then, the raw material for the cement clinker charged by the rapid temperature rising furnace in the cement clinker manufacturing apparatus is preheated by a calcination furnace or the like (800 to 90).
Target firing reaction temperature (1300 to 140
The temperature is raised to 0). And, by the rapid temperature rising furnace in the cement clinker manufacturing apparatus, the temperature of the introduced cement clinker raw material is increased to a firing temperature range of 1300 to 1400 ° C. at a temperature increase rate of 100 ° C./min or more, and then, The temperature is maintained in this temperature range to promote the firing reaction.

Further, as the rapid heating furnace in the cement clinker manufacturing apparatus, a fluidized bed furnace, a spouted bed furnace,
By using one of the jet fluidized bed furnace, plasma furnace, and electromelting furnace, the charged raw material for cement clinker is
The temperature is raised at a heating rate of 00 ° C./min or more. In addition, the cement clinker manufacturing apparatus is introduced after preheating in a calcination furnace or the like by introducing the cement clinker raw material into the firing furnace (13) via at least one rapid temperature rising furnace (12). The raw material for cement clinker is heated by a rapid heating furnace (12) at a heating rate of 100 ° C / min or more to a firing temperature range of 1300 to 1400 ° C, and then the firing temperature is held by a firing furnace (13). Then, the cement clinker containing a small amount of free lime (f-CaO) is fired.

In the cement clinker manufacturing apparatus, the firing furnace is a rotary kiln or a fluidized bed furnace, a spouted bed furnace, a spouted fluidized bed furnace, a plasma furnace, or an electric melting furnace, so that the temperature rises rapidly. The cement clinker is fired by holding the raw material heated to the firing temperature range by the furnace (12) in a rotary kiln as the firing furnace (13) at a firing temperature of 1300 to 1400 ° C.

[0015]

Embodiments of the present invention will be illustrated and described below. [Structure of First Embodiment] First of Cement Clinker Manufacturing Apparatus
The example is a cement clinker manufacturing apparatus in which a fluidized bed furnace is provided as a rapid heating furnace and a rotary kiln is provided as a firing furnace. A block diagram thereof is shown in FIG. 1 and an apparatus configuration is shown in FIG.

The cement clinker manufacturing apparatus of the first embodiment includes a preheating apparatus 1 in which preheating furnaces are combined in a plurality of stages, and a calcination furnace 2 for calcination of preheated raw materials to raise the temperature to about 800 to 900 ° C. , 100 when the calcined raw material is added
1300 ° C to 1400 ° C at a heating rate of ℃ / min or more
It comprises a rapid heating furnace 12 for raising the temperature to 1, and a firing furnace 13 for carrying out the firing reaction while maintaining the raw material temperature of 1300 to 1400 ° C. for a certain time when the rapidly heated raw material is transferred.

The fired cement clinker is transferred to the clinker cooler 14 and cooled by the cooling air supplied from the blower 15. The air from the blower 15 is heated in the clinker cooler 14 to raise its temperature, and is branched into air blown from the clinker cooler 14 to the firing furnace 13 side and air blown to the calcination furnace 2 side. The air blown from the clinker cooler 14 to the firing furnace 13 side is further heated in the firing furnace 13 to raise the temperature,
It is sent to the rapid heating furnace 12 connected to the firing furnace 13 and used as fluidizing heating gas and combustion air for fluidizing the raw material deposited in the rapid heating furnace 12. Also,
The air blown to the side of the calcination furnace 2 branched by the clinker cooler 14 is used as heating gas for calcination and combustion air.

The rapid heating furnace 12 constitutes a fluidized bed furnace as shown in FIG. The raw material from the calcination furnace 2 is introduced from the side wall, heated air for powder fluidization is introduced from the side of the firing furnace 13, fuel is introduced from the lower side and burned, and the combustion gas is flowed. The powder is heated to raise the temperature of the powder, and the powder that has risen is transferred from the discharge pipe 12a at the center of the side wall to the inlet side of the firing furnace 13 according to the flow of gas.

The temperature raising capability of this rapid temperature raising furnace 12 is 100
It has a temperature raising capacity of up to 200 ° C / min and can reach a raw material reaching temperature of 1400 ° C. The firing furnace 13 is a rotary kiln formed by shortening the drum length for a processing time corresponding to the elapsed time required for the rapid heating furnace 12. The firing furnace 13 is exclusively used for the firing reaction treatment and is operated so as to constantly maintain the target treatment temperature (maximum temperature ≤ 1400 ° C). In connection with the fact that the processing temperature in the firing furnace 13 can be kept low, the amount of cooling air blown to the clinker cooler 14 can be reduced, and the cooling performance can be kept lower than before. Like

[Operation of the First Embodiment] In the first embodiment configured as described above, the raw material for cement clinker is preheated by the preheating device 1 and is heated to 800 to 900 ° C. by the calcining furnace 2.
Then, the temperature is raised to calcination, and then it is put into the rapid heating furnace 12. In the rapid heating furnace 12, heated air is introduced from the lower side and fuel is introduced from the lower side, the fuel is mixed with air and burned, and the heated air and combustion gas introduced accumulate in the furnace. Fluidizing the powder, and heating the powder to a target processing temperature of 1300 to 1400 ° C. at a temperature rising rate of 100 to 200 ° C./min, and
The powder soared is placed on the flow of gas to be discharged through a discharge pipe 12a provided in the central portion of the side wall, and is transferred to a firing furnace 13 connected thereto. In the firing furnace 13 in which the rapidly heated raw material was introduced, the temperature was continuously increased to 1300 to 1
The temperature is maintained at 400 ° C., and the calcination reaction is continued until the content of free lime (f-CaO) is reduced to a predetermined range.

[Effects of the First Embodiment] As described above, in the first embodiment, the firing reaction can be rapidly advanced by rapidly raising the temperature. Therefore, the firing temperature is about 100 to You can lower it by 200 degrees,
Compared with the conventional method, the maximum firing temperature can be lowered, the heat consumption can be reduced by 3 to 5%, and the nitrogen oxide generation amount can be reduced to 20%.
It can be suppressed by -30%.

[Structure of Second Embodiment] A second embodiment of the cement clinker manufacturing apparatus is a cement clinker manufacturing apparatus which includes a fluidized bed furnace as a rapid heating furnace and a fluidized bed furnace in a firing furnace. A block diagram is shown in FIG. The cement clinker manufacturing apparatus of the second embodiment has a preheating device 1 in which preheating furnaces are combined in a plurality of stages, and a preheated raw material is approximately 8
A calcination furnace 2 for raising the temperature to 00 to 900 ° C. to perform calcination, and a first example of raising the temperature to 1300 to 1400 ° C. at a temperature raising rate of 100 ° C./min or more when the calcinated raw material is charged. The rapid temperature raising furnace 12 having the same performance as that of the fluidized bed firing furnace 1 for maintaining the raw material temperature of 1300 to 1400 ° C. for a certain period of time when the rapidly heated raw material is charged to continue the firing reaction.
3a.

The fluidized bed firing furnace 13a is a rapid heating furnace 1.
Although it is an apparatus of the same type as 2, it is used exclusively for the firing reaction treatment and is operated so as to constantly maintain the target treatment temperature (maximum temperature ≤ 1400 ° C). When the cement clinker fired in the fluidized bed firing furnace 13a is transferred to a clinker cooler (not shown), it is cooled to a predetermined temperature by cooling air supplied from a blower (not shown).

[Operation of Second Embodiment] In the second embodiment configured as described above, the raw material for cement clinker is preheated by the preheating device 1 and 800 to 90 by the calcination furnace 2.
After the temperature is raised to 0 ° C. and calcined, it is put into the rapid heating furnace 12. In the rapid heating furnace 12, heated air is introduced from the lower side and fuel is introduced from the lower side, the fuel is mixed with air and burned, and the heated air and combustion gas introduced are deposited in the furnace. The powder is fluidized and the powder is heated to a target processing temperature of 1300 to 1400 ° C. at a temperature rising rate of 100 to 200 ° C./min, and
The powder soared is placed on the flow of gas and discharged through a discharge pipe (not shown) provided at the center of the side wall,
It is transferred to the connected fluidized bed firing furnace 13a. In the fluidized bed firing furnace 13a in which the raw material for cement clinker is introduced, the treatment temperature is continuously maintained at 1300 to 1400 ° C., and the firing reaction is continued until the content of free lime (f-CaO) is reduced to a predetermined range. .

[Effects of the Second Embodiment] As described above, in the second embodiment, the firing reaction can be rapidly advanced and the maximum firing temperature can be lowered as compared with the conventional case, by rapidly raising the temperature. Therefore, the heat consumption amount can be reduced, and the nitrogen oxide generation amount can be reduced. Further, as a firing furnace, a fluidized bed firing furnace 13
By using a, the temperature can be controlled more precisely and the components can be easily adjusted as compared with the case where the rotary kiln is used.

[Structure of Third Embodiment] A third embodiment of the cement clinker manufacturing apparatus is provided with a fluidized bed furnace as a preheating device, a calcination furnace, and a rapid heating furnace to form a multistage rapid heating furnace. Fig. 4 shows a block diagram of the cement clinker manufacturing device. The cement clinker manufacturing apparatus of the third embodiment is a fluidized bed furnace 21 for preheating that preheats the raw material for cement clinker, and a fluid for calcination that preheats the preheated raw material to about 800 to 900 ° C. The layer furnace 22 and the calcined raw material are heated to 1300 to 300 ° C at a temperature rising rate of 100 ° C / min or more.
It comprises a rapid temperature raising furnace 12 for raising the temperature to 1400 ° C., and a fluidized bed firing furnace 13a for keeping the temperature of the rapidly raised raw material 1300 to 1400 ° C. for a certain period of time to continue the firing reaction.

The fluidized bed firing furnace 13a is a rapid heating furnace 1.
Although it is an apparatus of the same type as 2, it is used exclusively for the firing reaction treatment and is operated so as to constantly maintain the target treatment temperature (maximum temperature ≤ 1400 ° C). When the cement clinker fired in the fluidized bed firing furnace 13a is transferred to a clinker cooler (not shown), it is cooled by cooling air supplied from a blower (not shown).

[Operation of the Third Embodiment] In the third embodiment configured as described above, the raw material for cement clinker is preheated by the fluidized bed furnace 21 for preheating, and the fluidized bed furnace 2 for calcination is used.
Then, the temperature is raised to 800 to 900 ° C. by 2 and calcined, and then charged into the rapid heating furnace 12. In the rapid heating furnace 12, heated air is introduced from the lower side and fuel is introduced from the lower side, the fuel is mixed with air and burned, and the heated air and combustion gas introduced accumulate in the furnace. Fluidize the powder that is flowing and the powder at 100 to 200 ° C /
Target processing temperature 1300 to 140 depending on the temperature increase rate of min
The temperature is raised to 0 ° C., and the soaring powder is placed on the flow of gas and discharged through a discharge pipe (not shown) provided at the center of the side wall, and the fluidized bed firing furnace is connected. Transfer to 13a. In the fluidized bed firing furnace 13a in which the raw material for cement clinker was introduced, the temperature was continuously raised to 1300.
The temperature is maintained at ˜1400 ° C., and the calcination reaction is continued until the content of free lime (f-CaO) is reduced to a predetermined range.

[Effects of the Third Embodiment] As described above, in the third embodiment, the firing reaction can be rapidly advanced and the maximum firing temperature can be lowered by rapidly raising the temperature, as compared with the prior art. Therefore, the heat consumption amount can be reduced, and the nitrogen oxide generation amount can be reduced. Further, the fluidized bed furnace 21 for preheating, the fluidized bed furnace 22 for calcination, the rapid heating furnace 12, and the fluidized bed firing furnace 13a are all fluidized bed furnaces, and devices of the same type are provided in multiple stages to form them. As a result, the equipment to be installed will be unified, and each furnace will be easier to manage, more precise temperature control will be possible, energy conservation will be promoted, pollution prevention effect will be enhanced, and cement clinker component adjustment Can be made easier.

[Structure of Fourth Embodiment] A fourth embodiment of the cement clinker manufacturing apparatus is a multi-stage type in which a single fluidized bed furnace is used as both the rapid heating furnace and the fluidized bed firing furnace in the third embodiment. FIG. 5 shows a block diagram of a cement clinker manufacturing device in which a rapid heating furnace is formed. The cement clinker manufacturing apparatus according to the third embodiment includes a fluidized bed furnace 21 for preheating that preheats the raw material for cement clinker, and 800 preheated raw materials.
Fluidized bed furnace 22 for calcination that heats up to 900 ° C and calcinates
Then, the calcined raw material is heated to a target processing temperature of 1300 to 1400 ° C. at a heating rate of 100 to 200 ° C./min, and the target processing temperature is maintained for a certain period of time to continue the firing reaction. And the heating furnace 12. Others are the same as in the third embodiment.

[Operation of Fourth Embodiment] In the fourth embodiment configured as described above, the raw material for cement clinker is preheated by the fluidized bed furnace 21 for preheating, and the fluidized bed furnace 2 for calcination is used.
After being calcined by 2, it is put into the rapid heating furnace 12. In the rapid heating furnace 12, the calcined raw material is heated to 100 ° C./min.
With the above heating rate, the temperature is raised to 1300 to 1400 ° C., the temperature is maintained for a certain time, and free lime (f-Ca
The calcination reaction is continued until the content of O) is reduced to a predetermined range.

[Effects of Fourth Embodiment] As described above, in the fourth embodiment, the firing reaction can be rapidly advanced by rapidly raising the temperature, and the firing temperature can be continuously maintained, as compared with the conventional case. However, the maximum firing temperature can be lowered, the thermal efficiency can be further improved and the heat consumption amount can be reduced as compared with the devices up to the third embodiment, and the generation amount of nitrogen oxides can be reduced. Further, by using all fluidized bed furnaces and forming the same type of apparatus in multiple stages and reducing the number of apparatuses as compared with the third embodiment, it is possible to reduce the equipment cost, and further more than each of the third embodiment. The furnace can be easily managed.

[Other Embodiments] The device configurations of the above embodiments are merely examples, and do not limit other embodiments. Therefore, specifically, it is also possible to adopt another device configuration. For example, in addition to a fluidized bed furnace, a spouted bed furnace, a spouted fluidized bed furnace, a plasma furnace, or an electromelting furnace, etc. is matched to the purpose of use, as long as its performance and economic efficiency are sufficiently exhibited.
You may select suitably and install.

[0034]

As described above, in the cement clinker manufacturing apparatus of the present invention, at least one rapid heating furnace (12) for heating the cement clinker firing apparatus to raise the temperature of the cement clinker raw material at a heating rate of 100 ° C./min or more. ), The raw material for cement clinker put into the rapid heating furnace (12) can be quickly heated to a temperature higher than the melt reaction temperature to proceed to the firing reaction, without adding flux. The quality of the cement clinker can be improved even if it is fired, the heat consumption can be reduced, the operating cost can be reduced, and the generation of pollutants such as nitrogen oxides can be reduced.

In the cement clinker manufacturing apparatus, since the rapid heating furnace (12) can raise the temperature from at least the preheating temperature to the firing reaction temperature, the cement clinker put in the rapid heating furnace (12). The temperature of the raw materials used for preheating in a calcining furnace (800-9
The temperature (130 ° C) required for the target firing reaction (130 ° C)
The temperature can be raised efficiently from 0 to 1400), and the thermal efficiency can be improved.

Further, in the cement clinker manufacturing apparatus, the cement clinker raw material is charged by the rapid heating furnace (12) at a temperature rising rate of 100 ° C./min or more and a firing reaction temperature range of 1300 to 1400 ° C. By raising the temperature up to, and then maintaining this temperature range, it is possible to hold the cement clinker raw material in the rapid heating furnace (12) until a predetermined firing reaction proceeds, and at a lower temperature than before, Higher quality cement clinker can be efficiently fired.

Further, in the cement clinker manufacturing apparatus, by using any one of the fluidized bed furnace, the spouted bed furnace, the spouted fluidized bed furnace, the plasma furnace and the electromelting furnace as the rapid heating furnace (12), It is possible to raise the temperature at a temperature rising rate of 100 ° C./min or more, which was not possible with the rotary kiln alone in the firing apparatus, and to realize a rapid transition to the firing reaction.

In the cement clinker manufacturing apparatus, the raw material for the cement clinker is introduced into the firing furnace (13) via at least one rapid temperature rising furnace (12), so that it is preheated by the calcination furnace or the like. The supplied cement clinker raw material is heated by the rapid heating furnace (12) to 10
1300 to 1400 ° C at a heating rate of 0 ° C / min or more
The temperature is raised to the firing temperature range of, and then the firing furnace (13)
By maintaining the calcination temperature by, the calcination reaction can be continued with good thermal efficiency, and the cement clinker with less free lime (f-CaO) can be calcined.

In the cement clinker manufacturing apparatus, the firing furnace (13) is a rotary kiln or a fluidized bed furnace.
The raw material heated up to the firing temperature range by the rapid heating furnace (12) by any one of the spouted bed furnace, the spouted fluidized bed furnace, the plasma furnace and the electromelting furnace is used as a firing furnace (13). Kiln, fluidized bed furnace, spouted bed furnace, spouted fluidized bed furnace,
Cement clinker can be fired by maintaining the firing temperature of 1300 to 1400 ° C in a plasma furnace or an electric melting furnace, and a high-quality cement clinker can be fired at a lower temperature than before, and energy-saving and low-pollution firing Reaction processing is possible.

[Brief description of drawings]

FIG. 1 shows a first cement clinker manufacturing apparatus according to the present invention.
It is a block diagram which shows an Example.

FIG. 2 shows a first cement clinker manufacturing apparatus according to the present invention.
It is a block diagram which shows an Example.

FIG. 3 is a second embodiment of the cement clinker manufacturing apparatus according to the present invention.
It is a block diagram which shows an Example.

FIG. 4 is a third embodiment of the cement clinker manufacturing apparatus according to the present invention.
It is a block diagram which shows an Example.

FIG. 5 is a fourth embodiment of the cement clinker manufacturing apparatus according to the present invention.
It is a block diagram which shows an Example.

FIG. 6 is a configuration diagram showing a conventional cement clinker manufacturing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Preheating furnace (preheating device) 2 Calcining furnace 12 Rapid heating furnace 12a Discharge path 13 Firing furnace 13a Firing furnace 14 Clinker cooler 15 Blower 21 Preheating furnace 22 Calcining furnace

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Mikio Murao 3-1-1 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo Kawasaki Heavy Industries, Ltd. Kobe factory (72) Inventor Shozo Kanamori Higashikawasaki, Chuo-ku, Kobe-shi, Hyogo 3-1-1, Kawasaki Heavy Industries Ltd. Kobe factory (72) Inventor Futoshi Sato Sumitomo Cement Co., Ltd. (72) Inventor Katsuharu Mukai, Chiyoda-ku, Tokyo Kanda Midoshiro-cho 1 Sumitomo Cement Co., Ltd. (72) Inventor Toshiyuki Ishibachi Kanda Midoshiro-cho 1 Tokyo Chiyoda-ku Sumitomo Cement Co., Ltd.

Claims (7)

[Claims] 1. An apparatus for producing a cement clinker by charging a cement clinker raw material, preheating, calcining and then firing the cement clinker raw material.
A cement clinker manufacturing apparatus comprising at least one rapid heating furnace (12) for heating at a heating rate of 00 ° C./min or more. 2. The cement clinker manufacturing apparatus according to claim 1, wherein the rapid heating furnace (12) can raise the temperature from at least the preheating temperature to the firing reaction temperature. 3. The rapid heating furnace is capable of raising the temperature at a temperature rising rate of 100 ° C./min or more, raising the temperature to a temperature range of 1300 to 1400 ° C., and then maintaining the temperature range. The cement clinker manufacturing apparatus according to claim 1 or 2. 4. The cement clinker according to claim 1, wherein the rapid heating furnace is one of a fluidized bed furnace, a spouted bed furnace, a spouted fluidized bed furnace, a plasma furnace, and an electromelting furnace. Manufacturing equipment. 5. A cement clinker raw material of at least 1
The cement clinker manufacturing apparatus according to any one of claims 1 to 4, wherein the cement clinker manufacturing apparatus is charged into the firing furnace through two rapid heating furnaces. 6. The cement clinker manufacturing apparatus according to claim 5, wherein the firing furnace is a rotary kiln. 7. The cement clinker manufacturing apparatus according to claim 5, wherein the firing furnace is any one of a fluidized bed furnace, a spouted bed furnace, a spouted fluidized bed furnace, a plasma furnace, and an electromelting furnace.