JPH0648539A - Regulated powder volume taking-out device - Google Patents
Regulated powder volume taking-out deviceInfo
- Publication number
- JPH0648539A JPH0648539A JP22094292A JP22094292A JPH0648539A JP H0648539 A JPH0648539 A JP H0648539A JP 22094292 A JP22094292 A JP 22094292A JP 22094292 A JP22094292 A JP 22094292A JP H0648539 A JPH0648539 A JP H0648539A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- scraping plate
- metal layer
- carbide
- raw material
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Pusher Or Impeller Conveyors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種粉体を定量切り出
す為の装置、特に、非鉄金属製錬の製錬炉に粉状原料を
装入する為に粉体貯蔵用ビンから粉体を定量切り出す為
の装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for quantitatively cutting out various powders, and more particularly, for loading powdered raw materials into a smelting furnace for non-ferrous metal smelting, to extract powders from a powder storage bottle. The present invention relates to a device for quantitatively cutting out.
【０００２】[0002]
【従来の技術】銅やニッケルの非鉄製錬において製錬炉
へ供給する粉状原料は、平均粒子直径が４０〜６０μｍ
の精鉱、煙灰、銅滓、微粉炭、硅酸鉱等を３００℃で水
分率０．３％以下まで乾燥したものであり、一担貯蔵ビ
ン中に貯蔵された後、貯蔵ビンの下部に配置されたチェ
ーンコンベヤーにより搬送速度および鉱層を変化させる
ことにより、約８５℃の温度で定量的に切り出されて製
錬炉に供給される。2. Description of the Related Art Powdery raw materials supplied to a smelting furnace in the non-ferrous smelting of copper and nickel have an average particle diameter of 40 to 60 μm.
Concentrate, smoke ash, copper slag, pulverized coal, silicate ore, etc. are dried at a temperature of 300 ° C to a moisture content of 0.3% or less. By changing the conveying speed and the ore layer by the chain conveyor arranged, the material is cut out quantitatively at a temperature of about 85 ° C. and supplied to the smelting furnace.
【０００３】例えばセトラーの内側寸法が幅７ｍ及び長
さ２０ｍ程度の商業用自熔炉を用いて約２０００トン／
日の粉状原料を処理する操業で、貯蔵ビンから粉状原料
を定量切り出す為の装置は、図５に示す如く、７０００
ｍｍ×４５００ｍｍ×４８００ｍｍの寸法で約２００ト
ンの粉状原料を貯蔵する貯蔵ビン１、貯蔵ビン１の下端
部に水平に直結し仕切り板２によりケーシング上室３と
ケーシング下室４とに分割されているケーシング５、ケ
ーシング５内に設置され矢印Ａ方向に移動する掻板付チ
ェーンコンベヤー６、貯蔵ビン１から切り出す粉状原料
の鉱層の厚さを調整する鉱層ダンパー７、掻板付チェー
ンコンベヤー６により切り出された粉状原料がケーシン
グ上室３からケーシング下室４に移動し、次いで自熔炉
中へ供給するための投入シュート９から構成されてい
る。For example, a settler having an inner dimension of about 7 m in width and about 20 m in length is used for about 2000 tons / min.
An apparatus for quantitatively cutting out the powdery raw material from the storage bottle in the operation for processing the powdery raw material of the day is 7,000 as shown in FIG.
A storage bottle 1 having a size of mm × 4500 mm × 4800 mm for storing about 200 tons of powdery raw material, which is horizontally directly connected to the lower end of the storage bottle 1 and divided into a casing upper chamber 3 and a casing lower chamber 4 by a partition plate 2. The casing 5, the chain conveyor 6 with scraping plate installed in the casing 5 and moving in the direction of arrow A, the ore layer damper 7 for adjusting the thickness of the ore layer of the powdery raw material cut out from the storage bin 1, and the chain conveyor 6 with scraping plate. The powdered raw material is moved from the casing upper chamber 3 to the casing lower chamber 4 and then comprises a charging chute 9 for supplying it into the flash furnace.
【０００４】前記掻板付チェーンコンベヤー６は図１、
図２の如く左右に平板状の掻板８が定ピッチで取付けら
れており、掻板の形状がチェーンコンベヤの搬送能力を
決定する一因になっている。The chain conveyor 6 with a scraping plate is shown in FIG.
As shown in FIG. 2, flat plate-shaped scraping plates 8 are attached to the left and right at a constant pitch, and the shape of the scraping plates is one of the factors that determine the carrying capacity of the chain conveyor.
【０００５】銅やニッケルの非鉄製錬において製錬炉へ
供給する粉状原料は前記の如く微細で低水分率で高温で
しかも硬質の摩耗性の粉末なので、掻板はチェーンコン
ベヤー６と粉状原料との摩擦、およびケーシング内壁と
粉状原料との摩擦により各種のトラブルが生じる。In the non-ferrous smelting of copper and nickel, the powdery raw material supplied to the smelting furnace is a fine, low moisture content, high temperature and hard abrasive powder as described above. Various troubles occur due to friction with the raw material and friction between the casing inner wall and the powdery raw material.
【０００６】掻板８はクロム・モリブデン鋼等の強靭鋼
で作られているのであるが、掻板８と粉状原料との摩擦
により、図４の如く掻板８の先端部が著しく摩耗し、長
さが１年間で１０〜２０％も短くなり、切り出し精度が
低下したり、極端な場合はチェーンが切断し、操業が数
時間に渡って停止し、生産性が低下するといった問題が
あった。又、ケーシング内壁も摩耗が進行するとケーシ
ング５に穴が開いてしまい粉状原料がもれ出してしまい
作業環境を悪化させたり、操業が継続出来なくなるとい
った問題があった。The scraping plate 8 is made of a strong steel such as chrome / molybdenum steel, but due to the friction between the scraping plate 8 and the powdery raw material, the tip of the scraping plate 8 is significantly worn as shown in FIG. However, there is a problem that the length is shortened by 10 to 20% in one year, the cutting accuracy is lowered, and in extreme cases, the chain is cut, the operation is stopped for several hours, and the productivity is lowered. It was Further, when the inner wall of the casing also wears, holes are opened in the casing 5 and the powdery raw material leaks out, deteriorating the working environment and making it impossible to continue the operation.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、摩耗性の粉
末原料による切り出し精度の低下が少なく、又各種のト
ラブルの発生の少ない粉体用定量切り出し装置を提案す
ることを目的としている。SUMMARY OF THE INVENTION It is an object of the present invention to propose a powder quantitative cutting device in which the cutting accuracy due to an abradable powder raw material is less likely to decrease and various troubles are less likely to occur.
【０００８】[0008]
【課題を解決するための手段】本発明の粉体用定量切り
出し装置は、粉体貯蔵用ビンの下端部に水平に直結し、
仕切り板により上下２室に分割されているケーシング内
に掻板付チェーンコンベヤーを有する粉体用定量切り出
し装置であって、その外先端部に高硬度炭化物含有金属
層を有する該掻板と、その内側壁下部に高硬度炭化物含
有金属層を有する該ケーシング上室とを具備する点に特
徴がある。The powder quantitative slicing device of the present invention is horizontally connected directly to the lower end of a powder storage bottle,
A quantitative powder cutting device having a chain conveyor with a scraping plate in a casing divided into upper and lower chambers by a partitioning plate, the scraping plate having a high hardness carbide-containing metal layer at its outer tip and its inside. It is characterized in that the casing upper chamber having a metal layer containing high-hardness carbide is provided in the lower portion of the wall.
【０００９】[0009]
【作用】掻板８は寸法が約３００×９０×２２ｍｍであ
り、その先端部分に高硬度炭化物含有金属層１０が有る
ので粉状原料との摩擦による掻板先端部の急速な摩耗を
防止して、掻板先端とケーシング内側壁との隙間の拡大
を防止してチェーンコンベヤーの切り出し精度を維持す
ることが出来る。The scraping plate 8 has a size of about 300 × 90 × 22 mm, and has the high-hardness carbide-containing metal layer 10 at the tip thereof, so that the rapid wear of the tip of the scraping plate due to friction with the powdery raw material is prevented. Thus, it is possible to prevent the gap between the tip of the scraping plate and the inner wall of the casing from expanding and maintain the cutting accuracy of the chain conveyor.
【００１０】掻板８の高硬度炭化物含有金属層１０を設
ける部分は、ケーシング内側壁と対面する先端面および
掻板付チェーンコンベヤー６の粉状原料搬送方向側に位
置する掻板８の側面のみで良く、又、その範囲およびそ
の厚さは、ボイラー等の官庁検査の為の操業停止の間
隔、すなわち約１年間の連続操業で粉状原料の切り出し
精度が悪くならないように、掻板８の長さの減少が５％
を超えないようにするのが望ましいので、高硬度炭化物
含有金属層１０の種類、厚さおよび粉末原料搬送速度等
を考慮して決定すれば良く、少なくとも外先端から１０
ｍｍまでの距離の部分、最大で外先端から７５ｍｍまで
の距離の部分で良い。又その厚さが２ｍｍ未満では上記
の１年間の掻板の長さの減少が５％以上となるので好ま
しくなく、厚さが多い程良いが高硬度炭化物含有金属は
高価な材料なので５〜６ｍｍの厚さまでにするのが好ま
しい。The portion of the scraping plate 8 where the high-hardness carbide-containing metal layer 10 is provided is only on the tip surface facing the inner wall of the casing and the side surface of the scraping plate 8 located on the powdery raw material conveying direction side of the chain conveyor 6 with scraping plates. Good, and the range and the thickness of the scraping plate 8 are set so that the cutting accuracy of the powdery raw material does not deteriorate in the interval of the operation stop for the inspection of the boiler and other government offices, that is, the continuous operation for about one year. Reduction of 5%
Since it is desirable that it does not exceed 10, it may be determined in consideration of the type and thickness of the high-hardness carbide-containing metal layer 10, the feed rate of the powder raw material, and the like.
The distance may be up to mm, or the distance from the outer tip up to 75 mm. Further, if the thickness is less than 2 mm, the reduction of the length of the scraping plate in the above-mentioned one year becomes 5% or more, which is not preferable. The thicker the thickness, the better, but the high hardness carbide-containing metal is an expensive material. Up to the thickness of.
【００１１】ここで高硬度炭化物含有金属層１０として
は、タングステンカーバイド、クロム炭化物、その他少
量の各種炭化物粒子を約２０％の鉄をバインダーとして
作成された焼結合金や、炭素、クロム、ニオブの含有量
が高くその他の炭化物粒子をオーステナイトをバインダ
ーとして作成された焼結合金等が好ましい。The high-hardness carbide-containing metal layer 10 is made of tungsten carbide, chromium carbide, or a small amount of various carbide particles, such as a sintered alloy prepared by using about 20% of iron as a binder, carbon, chromium, and niobium. A sintered alloy or the like having a high content of other carbide particles and using austenite as a binder is preferable.
【００１２】前記の如く貯蔵ビン１は２００トンも粉状
原料を貯蔵し図５の如く掻板付チェーンコンベヤー６の
ケーシング５に直結した構造なので、粉状原料の荷重が
ケーシング５および掻板付チェーンコンベヤー６にかか
り、その結果、ケーシング内壁、特にケーシング上室３
の内側壁に通称いっきと呼ばれる粉状原料が固着したも
のが生じ、この為にケーシング上室３内のチェーンコン
ベアが蛇行し、極端な場合は跳び上る現状が生じる。こ
の様な状況では掻板付チェーンコンベヤー６の掻板８が
ケーシング上室３の内側壁にかなり強く接触し、極端な
場合はケーシング側壁に開孔部が発生してしまう。特に
掻板先端部に前記の如く高硬度炭化物含有金属層１０を
設けた場合はなおさらであるので、ケーシング上室３の
内側壁にも同様な高硬度炭化物含有金属層１０を設ける
必要がある。As described above, the storage bin 1 stores 200 tons of powdery raw material and is directly connected to the casing 5 of the chain conveyor 6 with a scraping plate as shown in FIG. 5, so that the load of the powdery raw material is the casing 5 and the chain conveyor with a scraping plate. 6 and consequently the inner wall of the casing, in particular the upper casing 3 of the casing.
The powdery raw material commonly referred to as "Ikki" adheres to the inner wall of the casing, which causes the chain conveyor in the casing upper chamber 3 to meander, and in extreme cases, jumps up. In such a situation, the scraping plate 8 of the chain conveyor 6 with scraping plates comes into considerable contact with the inner side wall of the casing upper chamber 3, and in an extreme case, an opening is formed in the side wall of the casing. In particular, when the high hardness carbide-containing metal layer 10 is provided at the tip of the scraping plate as described above, this is even more so, it is necessary to provide the same high hardness carbide-containing metal layer 10 on the inner wall of the casing upper chamber 3 as well.
【００１３】このケーシング上室３の内側壁に設ける高
硬度炭化物含有金属層１０は、掻板付チェーンコンベヤ
ー６の跳び上り現状を考慮するとケーシング上室３の内
側壁の最下部から掻板８の巾の３〜４倍の高さまでで良
く、又その厚さは５〜６ｍｍ程度で良い。尚、ケーシン
グ下室４の中では前記のような内側壁に固着物が生じる
ことが少ないので高硬度炭化物含有金属層は設けなくて
も良い。又、摩耗状況を調査した結果ケーシング上室３
およびケーシング下室４の底面は高硬度炭化物含有金属
層を設けなくても耐え得る状況であった。The high-hardness carbide-containing metal layer 10 provided on the inner side wall of the casing upper chamber 3 has a width of the scraping plate 8 from the lowermost portion of the inner side wall of the casing upper chamber 3 in consideration of the current jumping-up of the chain conveyor 6 with a scraping plate. 3 to 4 times as high as the above, and its thickness may be about 5 to 6 mm. In the lower casing 4 of the casing, since the adhered substance is unlikely to be generated on the inner wall as described above, the metal layer containing high hardness carbide may not be provided. Moreover, as a result of investigating the wear condition, the casing upper chamber 3
The bottom surface of the casing lower chamber 4 was able to withstand without providing the high hardness carbide containing metal layer.
【００１４】このケーシング上室３の内側壁に設ける高
硬度炭化物含有金属層１０としては施行上からは帯状の
ものが良く、例えばクロム、タングステン、モリブデン
等の炭化物を鋼でクラッドしたものが良い。The high hardness carbide-containing metal layer 10 provided on the inner side wall of the casing upper chamber 3 is preferably in the form of a strip from the practical point of view, for example, a material in which a carbide such as chromium, tungsten or molybdenum is clad with steel.
【００１５】[0015]
【実施例】図１、図２、図３は掻板付チェーンコンベヤ
ー６の掻板８の外先端部およびケーシング上室３の内側
壁に高硬度炭化物含有金属層１０を設けた図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 are diagrams in which a high hardness carbide containing metal layer 10 is provided on the outer tip end of a scraping plate 8 of a chain conveyor 6 with a scraping plate and the inner side wall of an upper casing 3 of a casing.
【００１６】実施例１ ケーシング上室３の内側壁に高硬度炭化物含有金属層１
０として巾３００ｍｍ、厚さ６ｍｍのＩＮＧプレート
（ＩＮＧ商事製、高Ｃｒ，Ｗ，Ｍｏ炭化物合金を軟鋼板
を母板としてクラッドした鋼帯、全合金元素４０％、炭
化物硬度ＨＶ１，６００以上）を固着させ、かつ、図１
に示した様に掻板８の先端面および側面（７５×９０×
２．５ｍｍ）に高硬度炭化物含有金属層としてＡＢＲＡ
ＳＯＤＵＲ−４５（ＩＮＧ商事製、高Ｃ，Ｃｒ，Ｍｏ，
Ｎｂ，Ｗ，Ｖの特許合金、オーステナイト＋炭化物）を
電気溶接法により設け、これらを設置した粉体用定量切
り出し装置を１年間操業した。その結果掻板８の長さの
減少量は３．２％と少なく、ケーシング５の壁に穴が開
くこともなく順調な操業が出来た。Example 1 A metal layer 1 containing a high-hardness carbide is formed on the inner wall of the casing upper chamber 3.
An ING plate having a width of 300 mm and a thickness of 6 mm is set to 0 (a steel strip clad with a soft steel plate of a high Cr, W, Mo carbide alloy manufactured by ING Corporation, a total alloy element 40%, and a carbide hardness HV1,600 or more). Fixed and Fig. 1
As shown in Fig. 7, the tip surface and side surface (75 x 90 x
ABRA as a metal layer containing high hardness carbide (2.5 mm)
SODUR-45 (manufactured by ING Corporation, high C, Cr, Mo,
Nb, W, V patented alloys, austenite + carbide) were provided by an electric welding method, and the powder quantitative cutting device equipped with these was operated for one year. As a result, the amount of reduction in the length of the scraping plate 8 was as small as 3.2%, and smooth operation was possible without forming holes in the wall of the casing 5.
【００１７】実施例２ ケーシング上室３の内側壁には同じ高硬度炭化物含有金
属層１０を設け、掻板８には実施例１で設けた高硬度炭
化物含有金属層の上に、すなわち掻板８の先端面および
側面（２０×９０×２．５ｍｍ）に高硬度炭化物含有金
属層としてＩＮＧＤＩＡＲＯＤ−１０００（ＩＮＧ商事
製、タングステン炭化物約６８％〜７８％、各種炭化物
約１３％〜８％、マトリックス・鉄１９％〜２０％の組
成を有する焼結合金タングステンカーバイド溶接棒）を
電気溶接し、これらを設置した粉体用定量切り出し装置
を１年間操業した。その結果掻板８の長さの減少量は
１．１％と少なく、ケーシング５の壁に穴が開くことも
なく、順調な操業が出来た。Example 2 The same high hardness carbide containing metal layer 10 is provided on the inner wall of the casing upper chamber 3, and the scraping plate 8 is provided on the high hardness carbide containing metal layer provided in Example 1, that is, the scraping plate. INGDIAROD-1000 (manufactured by ING Corporation, tungsten carbide approximately 68% to 78%, various carbides approximately 13% to 8%, matrix as a high hardness carbide-containing metal layer on the tip surface and side surface (20 × 90 × 2.5 mm) of 8 -A sintered alloy tungsten carbide welding rod having a composition of iron 19% to 20%) was electrically welded, and a quantitative cut-out device for powders equipped with these was operated for one year. As a result, the amount of reduction in the length of the scraping plate 8 was as small as 1.1%, and the wall of the casing 5 was not punctured, and the operation was smoothly performed.
【００１８】比較例 実施例１および２で使用した高硬度炭化物含有金属層を
用いない粉体用定量切り出し装置を１年間操業した。そ
の結果掻板８の長さの減少量は、９．６％と高く、粉状
原料の切り出し精度が充分でなかった。Comparative Example The quantitative slicing device for powder, which did not use the metal layer containing high hardness carbide used in Examples 1 and 2, was operated for one year. As a result, the reduction amount of the length of the scraping plate 8 was as high as 9.6%, and the cutting accuracy of the powdery raw material was not sufficient.
【００１９】[0019]
【発明の効果】本発明により、掻板付チェーンコンベヤ
ーの粉状原料の切り出し精度を維持することができる、
又、これに伴ない、銅やニッケルの非鉄製錬における製
錬炉の操業の安定性確保につながり、燃料のバラツキ等
もなくなり良好な炉況を維持していくことが可能とな
る。According to the present invention, it is possible to maintain the accuracy of cutting out powdery raw materials on a chain conveyor with a scraping plate.
Along with this, the stability of the operation of the smelting furnace in the non-ferrous smelting of copper and nickel is ensured, and it is possible to maintain a good furnace condition without variations in fuel.
【図１】本発明を実施した掻板付チェーンコンベヤーの
一部分を示す正面図および側面図である。FIG. 1 is a front view and a side view showing a part of a chain conveyor with scraping plates according to the present invention.
【図２】本発明を実施した掻板の部分のみを示す概略図
である。FIG. 2 is a schematic view showing only a portion of a scratch plate according to the present invention.
【図３】本発明を実施した粉体用定量切り出し装置（図
５）のＢ−Ｂ′断面を示す概略図である。FIG. 3 is a schematic diagram showing a BB ′ cross section of the powder quantitative cutting device (FIG. 5) embodying the present invention.
【図４】掻板の摩耗状態を示す概略図である。FIG. 4 is a schematic view showing a worn state of a scratch plate.
【図５】非鉄金属製錬の製錬炉に粉状原料を装入する為
の粉体用定量切り出し装置の側面図である。FIG. 5 is a side view of a powder quantitative dispensing device for charging a powdered raw material into a smelting furnace for smelting non-ferrous metals.
１ 貯蔵ビン ２ 仕切り板 ３ ケーシング上室 ４ ケーシング下室 ５ ケーシング ６ 掻板付チェーンコンベヤー ７ 鉱層ダンパー ８ 掻板 ９ 投入シュート １０ 高硬度炭化物含有金属層 1 Storage bin 2 Partition plate 3 Casing upper chamber 4 Casing lower chamber 5 Casing 6 Chain conveyor with scraping plate 7 Mining layer damper 8 Scraping plate 9 Input chute 10 High hardness carbide containing metal layer
Claims (1)
し、仕切り板により上下２室に分割されているケーシン
グ内に掻板付チェーンコンベヤーを有する粉体用定量切
り出し装置であって、その外先端部に高硬度炭化物含有
金属層を有する該掻板と、その内側壁下部に高硬度炭化
物含有金属層を有する該ケーシング上室とを具備するこ
とを特徴とする粉体用定量切り出し装置。1. A powder quantitative slicing device which has a chain conveyor with a scraping plate in a casing which is directly connected to the lower end of a powder storage bottle horizontally and is divided into two chambers by a partition plate. A quantitative cutting device for powders, comprising: the scraping plate having a high-hardness carbide-containing metal layer at an outer tip portion and the casing upper chamber having a high-hardness carbide-containing metal layer at an inner wall lower portion thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22094292A JPH0648539A (en) | 1992-07-29 | 1992-07-29 | Regulated powder volume taking-out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22094292A JPH0648539A (en) | 1992-07-29 | 1992-07-29 | Regulated powder volume taking-out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0648539A true JPH0648539A (en) | 1994-02-22 |
Family
ID=16758974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22094292A Pending JPH0648539A (en) | 1992-07-29 | 1992-07-29 | Regulated powder volume taking-out device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648539A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008162784A (en) * | 2006-12-28 | 2008-07-17 | Nippon Steel Engineering Co Ltd | Powder conveyance device |
| JP2014047060A (en) * | 2012-09-03 | 2014-03-17 | Hitachi Plant Mechanics Co Ltd | Chain conveyer |
| JP2014047061A (en) * | 2012-09-03 | 2014-03-17 | Hitachi Plant Mechanics Co Ltd | Chain conveyer |
| CN105346932A (en) * | 2015-11-24 | 2016-02-24 | 华电重工股份有限公司 | Scraper fetcher and scraper thereof |
| CN106966118A (en) * | 2017-05-22 | 2017-07-21 | 平湖光明机械设备制造有限公司 | A kind of conveyer of bulk cargo |
| CN109097613A (en) * | 2018-10-14 | 2018-12-28 | 昆山建金工业设计有限公司 | A kind of composite device of copper and aluminium, lead element |
-
1992
- 1992-07-29 JP JP22094292A patent/JPH0648539A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008162784A (en) * | 2006-12-28 | 2008-07-17 | Nippon Steel Engineering Co Ltd | Powder conveyance device |
| JP2014047060A (en) * | 2012-09-03 | 2014-03-17 | Hitachi Plant Mechanics Co Ltd | Chain conveyer |
| JP2014047061A (en) * | 2012-09-03 | 2014-03-17 | Hitachi Plant Mechanics Co Ltd | Chain conveyer |
| CN105346932A (en) * | 2015-11-24 | 2016-02-24 | 华电重工股份有限公司 | Scraper fetcher and scraper thereof |
| CN105346932B (en) * | 2015-11-24 | 2018-12-14 | 华电重工股份有限公司 | A kind of scraper reclaimer and its scraper plate |
| CN106966118A (en) * | 2017-05-22 | 2017-07-21 | 平湖光明机械设备制造有限公司 | A kind of conveyer of bulk cargo |
| CN109097613A (en) * | 2018-10-14 | 2018-12-28 | 昆山建金工业设计有限公司 | A kind of composite device of copper and aluminium, lead element |
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