JPH09249416A - Activated calcined shell powder and calcified calcined shell powder and device for calcining the shell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain activated or calcified porous calcined shell powder enhanced in the pulverizing calcination performance of the shells and diversified in the uses by calcining roughly crushed shells at a proper calcination temperature with stirring. SOLUTION: This activated porous dry calcined shell powder is obtained by calcining roughly crushed shells at a calcination temperature controlled to approximately 300-800 deg.C with agitation. The another objective dry and porous calcified shell powder is obtained by calcining roughly crushed shells at a calcination temperature controlled to approximately 850-1,150 deg.C with agitation. The device for calcining shells is provided with a roughly crushing machine 2 having a conveyer 3 for feeding shells, a rotary kiln 5 for continuously stirring and calcining the roughly crushed shells into the activated calcined shell powder or the calicified shell powder, and a conveyer 6 used for feeding the powder into a storage tank 7 and simultaneously for cooling the powder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an activated calcined shell powder, a calcined calcined shell powder and an apparatus for calcining the shell, which are characterized in that various shells are calcined to be activated or calcined.

[0002]

2. Description of the Related Art A large amount of oysters (oysters), scallops, pearl oysters and other shells used in fishing lines, fisheries processing plants, aquaculture plants, etc. It is used as a cleaning material for oyster farms, and in the case of pearl oysters, it is used as a drainage material under the road surface after being stored in seawater for about one year, or it is also used as a fertilizer, feed, etc. However, there is a limit to the amount of use of these. Recently, it has become difficult to secure a place for open storage, and it has been dumped into the sea.

[0003]

Conventionally, various types of shells such as oysters, scallops, and pearl oysters have a limit even if they are used as cleaning materials, drainage materials, fertilizers, feeds, etc. It has become necessary to stack shellfish in the open field or dump it into the sea, and the development of utilization of shellfish is an issue.

The present invention was developed in order to address the above-mentioned problems. The object of the present invention is to activate coarsely crushed shells by agitating them at an appropriate calcination temperature while stirring them. Or provide activated calcined shell powder, calcined calcined shell powder and its shell calcining device, which are made of calcined and porous calcined shell powder to enhance the powder calcining performance of shells and enable various uses to be effectively utilized. There is.

[0005]

According to the present invention, roughly 300 to 800 ° C. or 850 to 1 ° C. is used while stirring roughly crushed shells.
It is highly efficiently and accurately fired as an activated fired shellfish powder or a quicklime calcined shellfish powder, which is made into a porous fired shellfish powder that is activated or quick-calcified and dried at a controlled firing temperature of about 150 ° C. . This activated calcined shellfish powder or quick-calcined calcined shellfish powder is a smooth, calcined shellfish powder that has a large surface area and has a layered structure, does not contain harmful impurities, and has high alkalinity and excellent moisture absorption or heat drying properties. Has sterilization and deodorizing performance, and also has absorption performance for NOx, SO ₂ , ammonia, etc.,
It is easy to handle, and it is suitable as a feed, fertilizer, etc. as a filtering agent, a drying aid, an additive for chemicals, beverages, foods, feeds, etc., and it is added to various foods, heat-dried, sterilized and deodorized to make fungus-free pasapa. The usage will be diversified.

Further, the shell firing apparatus is a coarse crusher equipped with a shell feeding conveyor, and the coarsely crushed shell fed from the coarse crusher is stirred at about 300 ° C to 800 ° C or 850 ° C to 11 ° C.
A rotary kiln that is continuously fired at a controlled firing temperature of about 50 ° C. to obtain activated or quick-calcified porous silky molasses powder, and an activated or quick-calcified porous calcined shell powder that is calcined by a rotary kiln Equipped with a cooling and conveyor that cools and supplies to the storage tank,
A soft shell is roughly crushed by a crusher and put into a rotary kiln.The rotary kiln is activated or quick-calcified by accurately crushing the roughly crushed shell while appropriately pulverizing it at an appropriate stirring and heating temperature. The fired shellfish powder is cooled, and the fired shellfish powder is cooled by a cooling / conveyor to efficiently produce the activated fired shellfish powder or quick calcified fired shellfish powder.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION FIGS. 1A and 1B show an embodiment of a shell baking apparatus for producing activated baked shell powder and quick calcified baked shell powder. In the figure, 1 is a shell material tank, 2
Is a shell crusher, 2a is a shell crushing means incorporated in the crusher, 3 is a conveyor for feeding the crushed shells, 5 is a rotary kiln in which a prime mover 5a is appropriately rotated at a low speed and the firing temperature is controlled, 6 is a cooling / conveyor of activated or quick-calcined baked shellfish powder, 7 is a storage tank for activated baked shellfish powder or activated baked shellfish powder, 8 is a secondary storage tank, 9 is a kneaded granule of the baked shellfish powder It is a chemical machine.

According to the present invention, 30 pieces of coarsely crushed shells are stirred and stirred.
The activated fired shellfish powder is characterized in that it is made into a dry and porous fired fired shellfish powder which is fired at a firing temperature controlled to about 0 ° C to 800 ° C.

Further, while stirring the roughly crushed shells, the temperature is 850 ° C.
The calcined calcined shell powder is characterized in that it is calcined at a calcining temperature controlled to about 1150 ° C. to obtain a calcined, porous calcined shell powder that is calcined.

Further, the coarse crusher 2 with the shell feeding conveyor 3 and the coarsely crushed shell fed from the coarse crusher 2 are stirred at a firing temperature controlled to about 300 ° C to 800 ° C or 850 ° C to 1150 ° C. A rotary kiln 5 that is continuously fired to obtain activated or quick-calcined fired shellfish powder, and a cooling / conveyor 6 that cools the activated or quick-calcined fired shellfish powder fired in the rotary kiln 5 and supplies it to a storage tank 7. It is a shell firing device equipped with and.

The raw material tank 1 stores various kinds of shells (not shown) such as oysters (oysters), scallops, and pearl oysters (not shown). It is a tank that is fed to the crusher 2 by the conveyor 1a. Further, the crusher 2 has a crushing means 2a including a fixed blade and a rotary blade at the bottom, and crushes the shells fed from the raw material tank 1 to an appropriate degree and crushes the shells into a feeding conveyor (screw). It is structured so that it is charged into the rotary kiln 5 by a conveyor 3).

Further, the rotary kiln 5 basically has a function of firing at a firing temperature in the range of 200 ° C. to 1200 ° C., and controls the firing temperature by an appropriate control means (not shown) and also the prime mover 5a. It is controlled to rotate at a moderately low speed as shown by the arrow. Specifically, the roughly crushed shell is stirred at a moderately low speed while stirring at 300 ° C to 800 ° C.
Firing at a controlled firing temperature, or 850 ° C to 1
The structure is such that the shell is baked at a baking temperature controlled to about 150 ° C., and the shell is baked into activated or quick-calcined baked shell powder.

The cooling / conveyor 6 is preferably a fan 6a.
Apply a screw conveyor with a jacket for air-cooling or water-cooling with, and air-cooling or water-cooling the fired shellfish powder that has been activated or calcined by firing in the rotary kiln 5.
It is transferred to the storage tank 7 as activated baked shellfish powder or quick calcified shellfish powder.

The activated calcined shellfish powder or quick-calcified shellfish powder stored in the storage tank 7 is sized or the like as a product, or transferred to the secondary storage tank 8 by the conveyor 7a and stored to be sized or the like. The product is then processed into a product, or is supplied to an appropriate kneading and granulating machine 9 to which additives such as rice bran and starch syrup are mixed in an appropriate amount to appropriately increase the diameter of the product. These products are weighed and packed as needed.

In the illustrated shell burning apparatus, various shells such as oysters, scallops and pearl oysters are stored in the raw material tank 1 and a predetermined amount thereof is supplied to the crusher 2. The shell is roughly crushed by the crushing means 2a of the crusher 2 into, for example, 8 mmφ and 10 mm in length, and then the roughly crushed shell is continuously charged into the rotary kiln 5 by the charging conveyor 3 at a predetermined speed and crushed. And is fired.

In the rotary kiln 5, coarsely crushed shells are stirred at a moderately low speed while being calcined at a calcining temperature controlled to about 300 ° C to 800 ° C, or 850 ° C to 1150.
Firing is performed at a firing temperature controlled to about ℃ to obtain activated or quick-calcified fired shell powder. That is, the roughly crushed shells are continuously agitated at a moderately low speed and calcined, and in the case of a calcining temperature of about 300 ° C. to 800 ° C., they are crushed to about 200 μmφ and calcined with high accuracy to activate the silky smoothness. It becomes a porous baked shellfish powder. Also, the firing temperature is 850 ° C.
In the case of about 1150 ° C., it is finely pulverized into fine particles of about 45 μmφ and calcined with high precision to give a dry calcined, porous calcined shell powder. The activated or quick-calcined baked shellfish powder is air-cooled or water-cooled by the cooling / conveyor 6 and stored in the storage tank 7 as activated baked shellfish powder or quick-calcified baked shellfish powder. The activated calcined shellfish powder or quick-calcined calcined shellfish powder is sized by appropriate means (not shown), weighed, and packaged before shipment as a product.

The activated calcined shellfish powder or quick-lime calcined shellfish powder is stored in the secondary storage tank 8 by the conveyor 7a as necessary and shipped as a product, or further sent to the kneading and granulating machine 9. An appropriate amount of rice bran or starch syrup is added to moderately increase the diameter, and then processed into activated calcined or quick-calcined calcined shell grains and shipped as a product.

Further, in the above-mentioned activated calcined shellfish powder and calcined calcined shellfish powder, the shell does not contain harmful impurities as compared with quicklime produced from limestone (hard mineral), is a raw material and is soft and porous. Because it is a material,
When the shells are appropriately roughly crushed and put into the rotary kiln 5, the roughly crushed shells are stirred at a moderately low speed in the rotary kiln 5 and adjusted to a firing temperature of about 300 ° C to 800 ° C or 850 ° C to 1150 ° C. Then fired,
Compared with quicklime made from limestone (calcining temperature of 1200 ° C to 1300 ° C), it becomes activated or quickcalcified baked shellfish powder that is appropriately crushed at a relatively low temperature and accurately baked.
This calcined shellfish powder contains no particularly harmful impurities, is highly alkaline with a pH of 11 or higher, and has a CaO (91.71)
wt%) is the main component, and MgO (1.47 wt%) and other trace amounts of SiO ₂ , Al ₂ O ₃ , FeO and S are contained in the component, which are cooled to activate the calcined shellfish powder and calcined calcined shellfish. It can be efficiently manufactured as a powder.

Further, the activated calcined shellfish powder calcined at a calcining temperature of 300 ° C. to 800 ° C. is relatively coarse (20
0 μmφ) Activated by being formed into a smooth porous powder, it becomes smoother than quicklime made from limestone (mineral), and it is a highly porous powder and has a large surface area, making it a laminated structure that is easy to handle and highly alkaline quicklime made from limestone. It has better moisture absorption, sterilization and deodorizing performance than NOx,
It also exhibits absorption performance of SO ₂ , ammonia, etc., and various sizes such as sizing as necessary or addition of additives to increase the diameter to a suitable size, various filters, drying aids, chemicals, beverages, foods, feeds, etc. It is widely and effectively used as an additive for foods, and as feed and fertilizer.

The calcined calcined shell powder powder calcined at a calcining temperature of about 850 ° C. to 1150 ° C. is finer (45 μm).
mφ) It is formed into a smooth, porous powder and is quick calcified. Basically, it has excellent moisture absorption and sterilization as described above.
It has deodorizing performance as well as absorption performance for NOx, SO ₂ , ammonia, etc., and exhibits excellent exothermic performance through hydration reaction. It is easy to handle and used by sizing as needed, and together with the above-mentioned applications, for example, this appropriate amount is added to foods such as leftover rice and dried by heat to sterilize and deodorize, and dry mildew-proofed foods. The powder can be easily dried and is suitable for feed and fertilizer. It is also moisture-proof with a bag or the like.

In the illustrated example, the rotary kiln has a horizontally long structure in which the rotary kiln is slanted. However, if necessary, various kinds of firing devices having a sales promotion mechanism inside may be similarly applied as the rotary kiln. It is possible.

[0022]

INDUSTRIAL APPLICABILITY The present invention is about 300 ° C. to 800 ° C. or 850 ° C. to 11 ° C. while stirring roughly crushed shells as described above.
An activated calcined shellfish powder or a calcined calcined shellfish powder, which is made into a porous calcined shell powder that is activated or calcined by calcining at a controlled calcining temperature of about 50 ° C. Quicklime calcined shellfish powder is a smooth porous shellfish powder that has a layered structure with a large surface area, and has high alkalinity and excellent moisture absorption or heat drying as well as sterilization and deodorizing performance without containing harmful impurities. Also exhibits absorption performance of NOx, SO ₂ , ammonia, etc., and is used as a filtering agent, a drying aid, a chemical or a beverage,
Additives such as foods and feeds, as well as various foods, can be sterilized and deodorized by heat generation to sterilize and deodorize, making them suitable as feeds and fertilizers. To be done.

Further, the shell firing apparatus is constructed as described above, and the shell is appropriately crushed by the crusher equipped with the feeding conveyor and put into the rotary kiln, and the rotary kiln appropriately stirs the crushed shell 300 times. Efficiently with a highly accurate activated or quick-calcined, smooth-baked porous shellfish powder that is baked with high accuracy continuously at a baking temperature controlled to about ℃ to 800 ℃ or about 850 ℃ to 1150 ℃. After being well processed, these baked shellfish powders are cooled in a cooling / conveyor and stored in a storage tank as activated baked shellfish powders or quick-calcified baked shellfish powders. The accuracy of pulverization and baking can be improved by moderately stirring with a rotary kiln and baking at an appropriate temperature, so that the activated baked shellfish powder or quick-calcified baked shellfish powder can be produced with high efficiency and high accuracy.

[Brief description of drawings]

FIG. 1 is a side view (A) and a plan view (B) showing an embodiment of a shell firing apparatus of the present invention.

[Explanation of symbols]

 2 Crusher 3 Input conveyor 5 Rotary kiln 6 Cooling / conveyor 7 Storage tank

Claims (3)

[Claims] 1. A crushed shell is stirred at 300 ° C. to 8 ° C.
An activated calcined shell powder characterized in that it is made into a dry, porous, calcined shellfish powder that has been calcined at a calcining temperature controlled to about 00 ° C. 2. The 850 ° C. to 1 while stirring the roughly crushed shell
A calcined calcareous shell powder which is characterized by being calcined at a calcining temperature controlled to about 150 ° C. to form a calcined, porous calcined shellfish powder. 3. A crusher equipped with a shell feeding conveyor and a crushed shell fed from the crusher at 300 ° C. while stirring.
A rotary kiln that is activated or quick calcified by a rotary kiln that is activated or quick calcified by continuous firing at a controlled firing temperature of about 800 ° C. or 850 ° C. to 1150 ° C. A shell burning apparatus, comprising: a cooling and conveyor that cools the baked shell powder and supplies it to a storage tank.