JPS6152327A - Spout for high-temperature melt - Google Patents

Abstract

PURPOSE:To provide a spout for a high-temp. melt which heats uniformly the high-temp. melt and can avert the aggravation of working environment by provoding fine pipes which are diagonally confluent with respect to the top ends of the nozzles of plural gas burners disposed to a spout cap and open at the other end to the outside of the spout cap to the spout body for the high-temp. melt along the longitudinal direction thereof. CONSTITUTION:For example, the blister copper flowing in the spout for the high-temp. melt is satisfactorily and uniformly heated over the entire part by the plural burners which are branched near the spout, are provided at the narrow intervals in the spout body 15 and blow off flames. The droso height of the molten Fe to be formed to a magnetite state is thus kept low overall and the clogging of the cap is prevented. The tertiary air sucked into the fine pipes 20 confluent diagonally with respect to the top ends of the burner nozzles 19 by the jet flow effect of the burners plays the role of cooling the nozzles 19 and prevents the damage of the nozzles owing to overheating. The presence or absence of the clogging of the nozzles 19 can be inspected through the pipes 20 from the outside in the operating condition of the spout and the cleaning of the nozzles from the outside by fine bars which can be inserted into the pipes 20 is also possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a gutter for high-temperature solutions that uniformly heats high-temperature solutions and allows them to flow smoothly while maintaining their high-temperature state.

(Prior art) In general, when am using a continuous steelmaking furnace, !1/@furnace (
In Furnace C), 65% Cu matte is oxidized to produce crude steel with a Cu grade of about 9 g and 5%.

This at steel continuously flows out of the siphon and %
During the operation of the 11m furnace, when the steel is turned into the final crude steel, the 0° potential is high and F. exists as magnetite. When this magnetite mixes with the crude steel and comes out of the furnace, the temperature drops in the gutter, and the magnetite is cast into @2 as a so-called gutter, as shown in FIG. This causes the gutter 2 to become clogged and the crude steel 3 to overflow from (42).

Therefore, in the past, the gutter 2 was heated with an LPG burner 4 as shown in FIG. 6 to minimize the occurrence of gutter.

This burner 4 is equipped with a large burner nozzle 6 directly at the end of a relatively thick introduction pipe 5, and the burner nozzle 6 is arranged in
1) There are few reasons and the intervals between them are long.

Therefore, the crude steel 3 flowing in the gutter 2 is locally heated by the flames from the few burner ports 6, and between the relatively large burner ports 6, the gutter volume of the steel wire 3 increases as shown in FIG. ).

For this reason, a large amount of the gutter 1 was deposited on the gutter 2, especially in areas where the gutter volume was high, and the gutter 2 was often blocked. In addition, the horizontal axis of Fig. 3 (&) is 1 anchor in the longitudinal direction of @2, the vertical axis is the gutter, and the AR burner jJl in the figure.
One mouth 6 flame is shown.

By the way, as a method to completely eliminate the clogging of the gutter 2 by the gutter 1, a method such as melting the gutter 1 with a jet lance is necessary. However, this method was time-consuming due to the high-temperature work, and was extremely labor-intensive. Moreover, the use of jet lances was uneconomical and rare.

Therefore, the present applicant first proposed a heating method for a gutter for high-temperature solutions (Japanese Patent Application No. 57-221552).

This heating method branches the fuel flow of the heating burner near the gutter into a plurality of flows that line up in the longitudinal direction of the gutter and head toward the gutter, and guides these branched fuel flows further near the gutter. The flame is emitted from the burner openings at the branch points of these branches to uniformly heat the entire high-temperature solution flowing through the gutter. In carrying out the heating method, for example, as shown in FIG. By ejecting the fuel as a flame from the burner mouth 10, the high-temperature solution flowing through @2 is heated sufficiently uniformly as a whole. As a result, the gutter height in the longitudinal direction of @20 is reduced as shown in Fig. 5(b). was suppressed to a low level overall, preventing gutter l from sticking to gutter 2, and clogging @2 was eliminated.

[Problem that the invention seeks to solve]

Although gutter blockage could be avoided by using the above heating method proposed earlier, the hot air from the exhaust gas from the entire gutter (particularly in a work environment where it is difficult for inspection workers to get close to the burner end) There was still some food left over.The present invention solves these 11!5 problems.
The aim is to reliably solve the problem without causing any problems.

[Means for solving problems]

In the high-temperature solution gutter according to the present invention, the upper part of the gutter body through which the high-temperature solution flows is suspended by 41, and a plurality of gas burners for blowing out flames into the gutter body are arranged along the longitudinal direction of the heel body. , a thin tube for inspecting the gas burner crater and for air suction, which has one end merging obliquely with the tip of the gas burner crater and the other end opening to the outside of the stack, is provided in the column 4. do.

〔Example〕

Hereinafter, prior to a detailed explanation of the present invention, first, a high temperature solution test carried out on a trial basis during its development will be explained based on FIGS. 9 to 12.

In other words, this high-temperature solution gutter branches the burner fuel flow to the burner small openings 13 of the ff number, as shown in Figure @g.
477 fa) r of the former.
In the case shown in FIG. 72(b), the burner edges 13 are arranged in a row along the longitudinal direction of the bridge body 11, and the latter shown in FIG. 72(a),
(b) The one shown in K is provided with burner openings 13 in three rows along the longitudinal direction of the bridge body 11. Further, a hole 14 for inspecting the burner is provided in the frame 12. However,
In such a gutter for high temperature solution, in addition to avoiding gutter clogging,
Although the working environment could be improved by the heat of the exhaust gas from the burner nozzle 13, the burner opening 13 became damaged in about a week due to splashes of melt and condensation of fume.

This invention was made in advance of all of this. Hereinafter, the embodiment will be described based on FIGS. 1 to 7.

1 to 3 show an embodiment of the present invention.

In the figure, reference numeral 15 is the bridge body, the upper part of which is covered by a ridge 16. This gutter 816 is equipped with a configuration in which LP gas and secondary air for fuel are guided from the tube 17 and branched from the branch '#18 to the vents 19 of the plurality of gas burners,
The plurality of craters 19 are arranged at narrow intervals along the longitudinal direction VC of the bridge body 15 and blow out flames into the gutter body 15. °Furthermore, the four dishes 16 are provided with a thin tube 20 whose one end intersects with the crater 19 and the other end opens to the outside. This allows the air to be sucked in as tertiary air. In this example, the JA*20s are arranged in a row on both sides of the branch -R18 in a row, and the dNt20 on both sides of the branch stomach 18 are arranged in a row with respect to the Nirubu crater 19. They are designed to intersect alternately.

Therefore, the high-temperature solution (2) thus constructed is prevented from being cast into the gutter by the plurality of burners that are branched near the gutter and emit flames at narrow intervals within the gutter body 15. Blockage of the bridge will be avoided. In addition, the tertiary air sucked into the narrow W20 by the jet stream effect of the burner serves to cool the tip of the burner, the nozzle 19, and prevent damage to the nozzle due to +74 heat. Also,
2 Pass the Tsukuda pipe 20 through the V of the gutter to check whether the crater 190 is clogged or not.
It is possible to inspect the nozzle from the outside in difficult situations, and the nozzle can also be cleaned from the outside by using the thin zelkova that goes into the thin tube 20.Therefore, the 20 thin tubes are for gas burner crater inspection and air suction. It can be said.

Figure 1 shows another embodiment of the invention. In this example,
A nozzle part of the burner is arranged diagonally above the gutter heating part, and a thin tube 20 is provided which diagonally intersects with the nozzle 19 at the tip of the nozzle part.

Since the nozzle part of the burner is located diagonally above the storage heating part, the combustion gas rising directly above in the gutter,
There is no head-on collision with the blown gas or air, and a good flow of combustion gas is maintained. Moreover, the nozzle of the burner may be closed due to the spray of solution generated by increasing the flow t of the combustion gas. In addition, in this example, by removing the gutter brick 21 provided in the 'Jit 16 so as to line up with the burner and opening that part, the combustion flame condition can be directly inspected, and the gutter can be removed as necessary. The process of melting, cleaning, and soaking inside the pot is also easy to carry out.

It goes without saying that the gutter for high-temperature solution according to the present invention can be widely applied not only to paulownia wood in the inkstone making clearing furnace, but also to U, 4R, and other general high-temperature demolition gutter! It is an island.

[Reducing the Invention As explained above, the high-temperature solution I according to the present invention covers the upper part of the t4 body with a tank lid, so that the temperature rises due to the hot air of the exhaust gas coming out of the t4 body. It is possible to give up on the deterioration of the condition once. What's more, the town grew in one go! Because it has a narrow tube for air suction for inspection of the burner crater that is diagonally aligned with the gas burner crater, the secondary air sucked within 4JH'd by the burner's jet stream attack. It is possible to cool the crater and drain the river, and through this thin tube, it is possible to check whether the nozzle is clogged or not and to check the nozzle from the outside. Nozzle eye due to fight = ta b
can be avoided.

[Brief explanation of drawings]

Figures 47 to No. 31 No. 1 show one embodiment of this invention. Figure S/ is a longitudinal cross-sectional view, Figure 2 is an enlarged view of the burner's crater, Figure 3 is a partial cutout of the Tachibana 9j# + Shukuzu, 1Xb
The figure is a diagram to explain and emphasize the conventional Ren's 11 heating method, Figure 7 is a diagram to explain the gutter heating method proposed earlier by the applicant, and Figure g (&) V. The graph showing the bulk of crude steel in the longitudinal direction when using the conventional heating method (4 g + mfb) is the longitudinal direction of the steel when using the heating method described by Motokawa and Hijingan. Figures 9 to 1 show the results of a trial run of this invention in the middle of four shots; Figure 7 is a longitudinal decoy; Schematic plan view, Figure 471 (&
) is a side view of one row of gutter A, Figure + b) is its bottom view, and Figure 72 (,) is a side view of (11) of the pond in Table 1. 15... Gutter body, 16... Pieces xi, 19
・・River/Burna Fire 1'', 20...tubule. Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] The upper part of the gutter body through which the high-temperature solution flows is covered with a gutter cover, and on the gutter cover, a plurality of gas burners for blowing out flames into the gutter body are arranged along the longitudinal direction of the gutter body, and one end is attached to the gutter cover. A gutter for high-temperature solution, characterized in that a thin tube for gas burner vent inspection and air suction is provided, which joins obliquely to the tip of the gas burner's vent and has the other end open to the outside of the gutter cover.