KR100401067B1 - A hopper for reducing dust from law lime stone - Google Patents

A hopper for reducing dust from law lime stone

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Publication number
KR100401067B1
KR100401067B1 KR10-1999-0064077A KR19990064077A KR100401067B1 KR 100401067 B1 KR100401067 B1 KR 100401067B1 KR 19990064077 A KR19990064077 A KR 19990064077A KR 100401067 B1 KR100401067 B1 KR 100401067B1
Authority
KR
South Korea
Prior art keywords
quicklime
hopper
storage
amount
reservoir
Prior art date
Application number
KR10-1999-0064077A
Other languages
Korean (ko)
Other versions
KR20010061581A (en
Inventor
이시형
Original Assignee
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR10-1999-0064077A priority Critical patent/KR100401067B1/en
Publication of KR20010061581A publication Critical patent/KR20010061581A/en
Application granted granted Critical
Publication of KR100401067B1 publication Critical patent/KR100401067B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
    • B65D88/28—Construction or shape of discharge section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

본 발명은 호퍼내 생석회 저장시의 낙하충격을 감소시킬 수 있는 새로운 형상의 호퍼를 창안하여 생석회 저장시 발생하는 낙하 충격에 의한 분 발생량을 감소시키는 데 그 목적이 있다.콘베이어 벨트에 의하여 이송된 생석회가 저장되는 저장소와 상기 저장소 하부에 불출피더를 구비한 생석회 저장호퍼에 있어서, 상기 저장호퍼의 저장소의 상부 1/2이 수직방향으로부터 40°이상의 경사를 가짐으로써 생석회의 분발생량을 감소시킬 수 있는 생석회의 분발생량을 감소시킬 수 있는 저장호퍼를 제공하는 것을 요지로 한다.An object of the present invention is to reduce the amount of dust generated by drop impact generated during the storage of quicklime by creating a hopper having a new shape that can reduce the drop impact when storing the quicklime in the hopper. In the quicklime storage hopper having a reservoir to be stored and a discharge feeder at the bottom of the reservoir, the upper half of the reservoir of the storage hopper has an inclination of more than 40 ° from the vertical direction, thereby reducing the amount of quicklime generated. It is an object of the present invention to provide a storage hopper capable of reducing the amount of dust generated.

본 발명에 의하면, 생석회 저장호퍼의 형상을 상부 1/2이 수직방향으로부터 약 40°이상의 경사를 주도록 개선함으로써 제품 저장시 낙하 충격에 의한 분발생율을 저하시킬 수 있는 효과가 있다.According to the present invention, by improving the shape of the quicklime storage hopper so that the upper half is inclined at about 40 ° or more from the vertical direction, there is an effect that the generation rate due to the drop impact during product storage can be reduced.

Description

생석회의 분발생량을 감소시킬 수 있는 저장호퍼{A hopper for reducing dust from law lime stone}A hopper for reducing dust from law lime stone}

본 발명은 저장호퍼에 관한 것으로서, 특히 로터리 킬른(rotary kiln)로에서 제조된 생석회의 제품호퍼 저장시에 낙하충격에 의한 분 발생량을 감소시키기 위해 호퍼의 형상을 개선시켜 생석회와 같이 입도가 크고 강도가 상대적으로 낮은 입자의 저장 및 이동시 분발생량 저감에 이용될 수 있는 생석회의 분발생량을 감소시킬 수 있는 저장호퍼에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage hopper, and in particular, to improve the shape of a hopper to reduce the amount of dust generated by drop impact when storing a product hopper of quicklime manufactured in a rotary kiln, the particle size is large and the strength is high. The present invention relates to a storage hopper that can reduce the generation of quicklime that can be used to reduce the generation of dust during storage and transport of relatively low particles.

일반적으로, 생석회는 제강공정에서 탈황 등의 정련을 위한 조재제로 사용되고 있으며, 고청정강의 제조를 위해서는 고품위의 생석회가 요구된다. 이러한 생석회는 일반적으로 COG의 연소열을 이용하여 석회석을 소성시킴으로써 제조된다. 소성된 생석회는 냉각이 된 후 호퍼에 저장되어 일정시간이 경과된 후 제강에서 사용하게 되며, 호퍼에는 통상적으로 호퍼 전체 체적의 약 50% 정도의 생석회가 저장된다. 킬른(kiln)로에서 소성된 생석회는 1000℃이상에서 소성되어 CaCO3에서 CO2가 휘발된 상태이므로 강도가 낮기 때문에 이송 및 저장시에 분발생을 피할 수 없다. 도 1은 기존의 생석회 저장호퍼에 대한 개념도를 나타낸 것으로써, 생석회(16)는 콘베이어 벨트(14)로 호퍼(10) 상부까지 이송되어 저장조(10-1)내로 자연낙하하기 때문에 낙하충격에 의해 조대한 생석회가 부숴지는 현상이 발생하며, 호퍼(10)내 저장레벨이 낮을 경우, 이러한 낙하충격은 더 클 수 밖에 없고 분발생량도 증가하는 문제가 있으며, 도면 중 미설명 부호 10-2는 불출피더이다.In general, quicklime is used as a refining agent for refining such as desulfurization in the steelmaking process, and high-quality quicklime is required to manufacture high clean steel. Such quicklime is generally produced by calcining limestone using the heat of combustion of COG. The calcined quicklime is stored in the hopper after cooling and used in steelmaking after a certain time has elapsed. The hopper typically stores about 50% of the quicklime in the hopper. Quicklime calcined in kiln furnace is calcined at 1000 ℃ or higher and CO 2 is volatilized in CaCO 3 , so its strength is low, so it is inevitable to generate dust during transportation and storage. 1 is a conceptual diagram of a conventional quicklime storage hopper, the quicklime 16 is transported to the upper portion of the hopper 10 by the conveyor belt 14, because it falls naturally into the reservoir (10-1) by drop impact Coarse quicklime breaks out, and when the storage level in the hopper 10 is low, such a drop impact is not only larger, the amount of dust generation is also increased, the reference numeral 10-2 in the figure is issued Feeder.

본 발명은 상기의 문제점을 해결하기 위하여 안출된 것으로서, 호퍼내 생석회 저장시의 낙하충격을 감소시킬 수 있는 새로운 형상의 호퍼를 창안하여 생석회 저장시 발생하는 낙하 충격에 의한 분 발생량을 감소시킬 수 있는 생석회의 분발생량을 감소시킬 수 있는 저장호퍼를 제공하는 데 그 목적이 있다.The present invention has been made to solve the above problems, by creating a new hopper that can reduce the drop impact when storing the quicklime in the hopper to reduce the amount of dust generated by the drop impact generated during the quicklime storage It is an object of the present invention to provide a storage hopper that can reduce the generation amount of.

본 발명은 상기 목적을 달성하기 위하여, 콘베이어 벨트에 의하여 이송된 생석회가 저장되는 저장소와 상기 저장소 하부에 불출피더를 구비한 생석회 저장호퍼에 있어서, 상기 저장호퍼의 저장소의 상부 1/2이 수직방향으로부터 약 40°이상의 경사를 가짐으로써 생석회의 분발생량을 감소시킬 수 있는 생석회의 분발생량을 감소시킬 수 있는 저장호퍼를 제공하는 것을 특징으로 한다.In the present invention, in order to achieve the above object, in the quicklime storage hopper having a reservoir in which the quicklime transported by the conveyor belt is stored and a discharge feeder in the lower portion of the reservoir, the upper half of the reservoir of the storage hopper is in a vertical direction. It is characterized by providing a storage hopper that can reduce the amount of quicklime generated by having an inclination of about 40 ° or more from the quicklime.

도 1은 종래 기술에 관한 생석회 저장호퍼의 개략도.1 is a schematic diagram of a quicklime storage hopper according to the prior art;

도 2는 본 발명에 관한 생석회 저장호퍼의 개념도.2 is a conceptual diagram of a quicklime storage hopper according to the present invention.

이하 본 발명을 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the drawings.

도 2는 본 발명에 관한 생석회 저장호퍼의 개념도를 나타낸 것으로서, 도면 에 나타낸 바와 같이 콘베이어 벨트(54)로 호퍼(50) 상부로 이송된 생석회(56)는 호퍼(50)내 저장소(50-1) 장입시 이미 저장되어 있는 생석회(56)의 저장 높이에 따라 낙하되는 거리가 달라지며, 저장되는 양이 적을수록 낙하충격에 의한 분발생량은 증가한다. 최근에는 생석회 제조이후 제강사용시까지 대기중의 수화반응을 억제할 목적으로 호퍼내 재고량을 점점 감소시키는 추세여서 이러한 분발생량은 점점 증가할 수 밖에 없다. 하기 표 1은 호퍼(50)내 생석회 높이(재고레벨)에 따른 불출피더(50-2)를 통한 불출 후 분 발생량을 나타낸 것이다. 호퍼(50)에 장입되는 생석회(56)의 입도는 약 20∼40mm이며, 5mm 이하의 생석회의 비를 아래 식 1의 분발생율로 정의하였다.FIG. 2 is a conceptual diagram of the quicklime storage hopper according to the present invention, and the quicklime 56 transferred to the upper portion of the hopper 50 by the conveyor belt 54, as shown in the drawing, is stored in the reservoir 50-1 in the hopper 50. The distance to drop depends on the storage height of the quicklime (56) already stored at the time of charging, the smaller the amount stored, the greater the amount of dust generated by the drop impact. In recent years, the amount of inventories in the hopper is gradually decreased to suppress the hydration reaction in the atmosphere from the quicklime production until the use of steelmaking. Table 1 shows the amount of minutes generated after discharging through the dispensing feeder 50-2 according to the quicklime height (stock level) in the hopper 50. The particle size of the quicklime 56 charged in the hopper 50 is about 20 to 40 mm, and the ratio of quicklime of 5 mm or less is defined as the generation rate of Equation 1 below.

재고레벨(%) 분발생율(%) 20 23 30 22 40 20 50 18 경사각도(°) 재고레벨에 따른 분발생율(%) 20 30 40 50 0(종래 형상) 23 22 20 18 10 24 22 20 19 20 23 21 21 18 30 22 22 20 17 40 18 18 16 15 50 15 12 10 8 60 10 6 4 3 표에서 알 수 있는 바와 같이 경사각도가 30°까지는 재고레벨별로 생석회(56) 분발생율의 저하가 뚜렷하게 나타나지 않으나 40°이상에서는 분발생율이 현저히 개선되는 것을 확인할 수 있었다. 즉, 호퍼(50)의 형상을 상부 1/2이 수직방향으로부터 약 40°이상의 경사를 갖도록 개선함으로써 제품 저장시 생석회(56)의 낙하충격에 의한 분발생량을 저하시킬 수 있음을 확인하였다. Inventory Level (%) Incidence rate (%) 20 23 30 22 40 20 50 18 Tilt angle (°) Incidence rate according to inventory level 20 30 40 50 0 (conventional shape) 23 22 20 18 10 24 22 20 19 20 23 21 21 18 30 22 22 20 17 40 18 18 16 15 50 15 12 10 8 60 10 6 4 3 As can be seen from the table, the inclination angle up to 30 ° did not show a sharp decrease in the quick release rate of quicklime (56) by inventory level, but it was confirmed that the release rate was significantly improved above 40 °. That is, it was confirmed that by improving the shape of the hopper 50 such that the upper half has an inclination of about 40 ° or more from the vertical direction, the amount of dust generated by the drop impact of the quicklime 56 can be reduced during product storage.

상술한 바와 같이 생석회 저장 호퍼의 형상을 상부 1/2이 수직방향으로부터 약 40°이상의 경사를 주도록 개선함으로써 제품 저장시 생석회의 낙하 충격에 의한 분발생율을 저하시킬 수 있는 효과가 있다.As described above, by improving the shape of the quicklime storage hopper so that the upper half is inclined by about 40 ° or more from the vertical direction, there is an effect of reducing the generation rate due to the drop impact of the quicklime during storage of the product.

Claims (1)

콘베이어 벨트에 의하여 이송된 생석회가 저장되는 저장소와 상기 저장소 하부에 불출피더를 구비한 생석회 저장호퍼에 있어서,In the storage of the quicklime transported by the conveyor belt and the quicklime storage hopper having a discharge feeder in the lower portion of the reservoir, 상기 저장호퍼(50)의 저장소(50-1)의 상부 1/2이 수직방향으로부터 40°이상의 경사를 가짐으로써 상기 생석회(56)의 분발생량을 감소시킬 수 있는 것을 특징으로 하는 생석회의 분발생량을 감소시킬 수 있는 저장호퍼.Occurrence amount of quicklime, characterized in that the upper half of the reservoir 50-1 of the storage hopper 50 has an inclination of 40 ° or more from the vertical direction to reduce the amount of dust generated from the quicklime 56 Storage hopper that can reduce the
KR10-1999-0064077A 1999-12-28 1999-12-28 A hopper for reducing dust from law lime stone KR100401067B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-1999-0064077A KR100401067B1 (en) 1999-12-28 1999-12-28 A hopper for reducing dust from law lime stone

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Application Number Priority Date Filing Date Title
KR10-1999-0064077A KR100401067B1 (en) 1999-12-28 1999-12-28 A hopper for reducing dust from law lime stone

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KR100401067B1 true KR100401067B1 (en) 2003-10-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53126185U (en) * 1977-03-11 1978-10-06
JPS58147905U (en) * 1982-03-30 1983-10-04 石川島播磨重工業株式会社 Powder loading device
JPS59178291U (en) * 1983-05-11 1984-11-28 株式会社荏原製作所 Hotupa
JPH08258889A (en) * 1995-03-27 1996-10-08 Kubota Corp Structure of feeding part in storage hopper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53126185U (en) * 1977-03-11 1978-10-06
JPS58147905U (en) * 1982-03-30 1983-10-04 石川島播磨重工業株式会社 Powder loading device
JPS59178291U (en) * 1983-05-11 1984-11-28 株式会社荏原製作所 Hotupa
JPH08258889A (en) * 1995-03-27 1996-10-08 Kubota Corp Structure of feeding part in storage hopper

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