JPWO2020025227A5

JPWO2020025227A5 -

Info

Publication number: JPWO2020025227A5
Application number: JP2021503905A
Authority: JP
Publication date: 2022-05-06

Description

適切な計算アルゴリズムを併用したデータ取得読み取り（図５参照）は、運搬装置４を用いて開口部４’を通す、リアルタイムの炉殻１内へのスクラップ金属供給の工程監視を可能にする。データ取得システム（図５）は、続いて、炉入口におけるエネルギーにも応じてその情報を処理し、それをラインオペレータに利用可能にするとともに、（例えば、コンスチール（Ｃｏｎｓｔｅｅｌ（登録商標））システムにおけるような）図５に記載される連続スクラップ金属供給制御システムにおいても利用可能にする。 Data acquisition and reading (see FIG. 5) combined with an appropriate calculation algorithm enables real-time process monitoring of scrap metal supply into the furnace shell 1 through the opening 4'using the conveyor 4. The data acquisition system (FIG. 5) subsequently processes that information in response to the energy at the furnace inlet and makes it available to line operators (eg, the Constel® system). Also available in the continuous scrap metal supply control system described in FIG.

あるいは、（現在の最先端技術によるバージョンである図２に示すタイプのような）車輪のない傾動式炉の場合、容易に測定するにはほど遠い重量を有するが、本発明によるソリューションを適用することで、装入材料のリアルタイム測定（図４）が可能になり、（例えば、コンスチール（Ｃｏｎｓｔｅｅｌ（登録商標））システムにおけるような）考えられる連続供給装置を備えたＥＡＦシステムの構築の単純化にかなりの影響を与える。 Alternatively, in the case of a wheelless tilting furnace (such as the type shown in FIG. 2, which is the current state-of-the-art version), the weight is far from easy to measure, but the solution according to the invention is applied. Allows real-time measurement of charged materials (Figure 4), simplifying the construction of EAF systems with conceivable continuous feeders (eg, in Constel® systems). It has a considerable impact.

一方、下部プレート１４は、傾動式プラットフォーム１２に固定的に係合するように構成されている。静止位置において、下部プレート１４は、上部プレート１３と実質的に平行であり、一実施形態では、ボルトを用いて傾動式プラットフォーム１２に係合され得る。 On the other hand, the lower plate 14 is configured to be fixedly engaged with the tilting platform 12. In the stationary position, the lower plate 14 is substantially parallel to the upper plate 13 and, in one embodiment, can be engaged with the tilting platform 12 using bolts.

リング壁１６は、上部および下部プレート１３，１４に垂直な長手方向軸を有し、その内側において、隔壁のような形態でリング構造１５全域に渡って内在するリングプレート１７を、好ましくは上部および下部プレート１３，１４に平行な方向に支持する。リングプレート１７は、リング壁１６の高さよりも小さい厚さを有し、必ずしもリング壁１６の上端と下端との間の中央位置に内在するわけではない。図示した実施形態では、例えば、リングプレート１７は、リング壁１６の高さの約２／３のところで、リング壁１６の上端寄りに内在する。 The ring wall 16 has a longitudinal axis perpendicular to the upper and lower plates 13, 14, and inside it is a ring plate 17 that is internal throughout the ring structure 15 in the form of a bulkhead, preferably the upper and lower plates. Support in a direction parallel to the lower plates 13 and 14. The ring plate 17 has a thickness smaller than the height of the ring wall 16 and is not necessarily located in the central position between the upper end and the lower end of the ring wall 16. In the illustrated embodiment, for example, the ring plate 17 resides near the top edge of the ring wall 16 at about 2/3 of the height of the ring wall 16.

さらに、傾動式プラットフォーム１２は、除滓および出湯作業のためにＥＡＦを傾斜させるように構成され得、また、ＥＡＦの傾斜が、出湯前の重量の１０％と５０％との間の重量を有する、ＥＡＦ内の溶融液体材料のヒールを維持するように配置され得る。 In addition, the tilting platform 12 can be configured to tilt the EAF for slag removal and hot water removal operations, and the EAF tilt has a weight between 10% and 50% of the pre-drainage weight. , May be arranged to maintain the heel of the molten liquid material in the EAF.

Claims

A device that measures and controls the charged material supplied into an electric arc furnace (EAF) mounted on a tilted platform.
An automatic control device that supplies the charged material according to the energy supplied to the tank, and
A measuring device for measuring the charged material, which is operably connected to the automatic control device, for measuring the shell of the EAF, its contents, and other components supported by the shell.
Equipped with
The measuring device is configured to be located between the EAF and the tilted platform.
An upper plate having an upper surface configured to slide with respect to the lower surface of the EAF,
A lower plate with a bottom surface configured to engage the tilting platform, and
A ring structure connected to the upper surface of the lower plate.
With a peripheral ring wall having a longitudinal axis perpendicular to the upper and lower plates,
A ring plate that is connected to the inside of the ring wall and extends over the entire ring structure.
A contact member connected to the ring plate and extending along the longitudinal axis of the ring structure, the upper part of which contacts the lower surface of the upper plate and the lower part of the contact member which contacts the upper surface of the lower plate. With contact members that approach without
With a ring structure and
One or more sensors coupled to the ring plate to measure the deformation of the ring plate when a load is applied to the top surface of the top plate.
The device.

The apparatus according to claim 1, wherein the upper surface of the upper plate is made of wear-resistant steel.

The device according to claim 1 or 2 , wherein the lower surface of the EAF in contact with the upper surface of the upper plate is made of wear-resistant steel.

The device according to any one of claims 1 to 3 , wherein the ring wall has a circular outer circumference.

The device according to any one of claims 1 to 4 , wherein the ring plate is parallel to the upper and lower plates and is closer to the upper end of the ring wall than the lower end of the ring wall.

The device according to any one of claims 1 to 5, wherein the contact member has a convex upper end, thereby minimizing the contact area between the contact member and the upper plate.

The device according to any one of claims 1 to 6, wherein the contact member has a flat lower end that functions as a limit of a moving distance in the case of an overload, thereby suppressing breakage of the measuring device.

The device according to any one of claims 1 to 7, wherein a plurality of sensors are arranged on opposite sides of the contact member.

One of claims 1-8 , wherein the one or more sensors are one or more strain gauges that measure the strain of the ring plate when the load is applied to the top surface of the top plate. The device described in the section .

The apparatus according to any one of claims 1 to 9 , further comprising a plurality of bars connecting the upper plate to the lower plate on opposite sides of the upper and lower plates.

The device according to claim 10, wherein the plurality of bars include two bars arranged obliquely in opposite directions.

The plurality of bars include three bars connected in a stepped manner on each of the opposite sides of the upper and lower plates, the three bars downward from the first outer end of the upper plate. A first bar extending into the lower plate, a second bar extending upward from the opposite outer end of the lower plate, and parallel to the upper and lower plates, the lower end of the first bar and the said. 10. The apparatus of claim 10, comprising a third bar connecting the upper end of the second bar.

The apparatus according to claim 1, further comprising a data acquisition system for reading one or more measurements provided by the one or more sensors.

The device according to claim 1, wherein the automatic control device is configured to continuously supply the charged material into the EAF.

A system for refining steel, the system is
An electric arc furnace (EAF) that produces steel by smelting and refining the materials charged in the EAF.
A conveyor connected to the EAF to introduce the charged material into the EAF.
A pre-combustion station that preheats the charged material in the conveyor in cooperation with the conveyor.
A tilting platform for tilting the EAF for slag removal and hot water removal operations, the tilting platform being arranged such that the tilt of the EAF maintains the heel of the molten liquid material within the EAF. The heel has a tilting platform with a weight between 10% and 50% of the pre-bath weight.
A device configured to measure and control the supply of the charge material to the EAF, located between the EAF and the tilted platform.
An automatic control device that supplies the charged material according to the energy supplied to the tank, and
A measuring device for measuring the charged material, which is operably connected to the automatic control device, for measuring the shell of the EAF, its contents, and other components supported by the shell.
With a device equipped with
Equipped with
The measuring device is arranged between the electric arc furnace and the tilting platform.
An upper plate having an upper surface configured to slide with respect to the lower surface of the EAF,
A lower plate with a bottom surface configured to engage the tilting platform, and
A ring structure connected to the upper surface of the lower plate.
With a peripheral ring wall having a longitudinal axis perpendicular to the upper and lower plates,
A ring plate that is connected to the inside of the ring wall and extends over the entire ring structure.
A contact member connected to the ring plate and extending along the longitudinal axis of the ring structure, with no contact with the lower surface of the upper plate at the top and without contact with the top surface of the lower plate at the bottom. With the approaching contact members,
With a ring structure and
One or more sensors coupled to the ring plate to measure the deformation of the ring plate when a load is applied to the top surface of the top plate.
The system.

The contact member has a convex upper end thereby minimizing the contact area between the contact member and the upper plate and also has a flat lower end thereby downward of the ring plate. 15. The system of claim 15, which maximizes the contact area between the contact member and the lower plate when deformed.

15. The system of claim 15 or 16 , further comprising a plurality of bars connecting the upper plate to the lower plate on opposite sides of the upper and lower plates.

17. The system of claim 17, wherein the plurality of bars include two bars that are diagonally arranged in opposite directions.

The plurality of bars include three bars connected in a stepped manner on each of the opposite sides of the upper and lower plates, the three bars downward from the first outer end of the upper plate. A first bar extending into the lower plate, a second bar extending upward from the opposite outer end of the lower plate, and parallel to the upper and lower plates, the lower end of the first bar and the said. 17. The system of claim 17, comprising a third bar connecting the top of the second bar.