JPS6086378A - Method of removing molten metal slag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bath water slag removal method in which slag on top of a bath water is removed by suction using a decoction head.

Conventionally, in the bath water slag removal method described above, the slag is placed close to the bath water slag, and the slag is sucked together with air from the suction head suction port, and cooling water is jetted against the suction slag flow in the suction head to break the slag into particles. The assimilated slag, cooling water, air, and water vapor generated due to water cooling are sucked and transported to the separator Vc in a three-phase mixed state while solidifying and preventing the extra cooling water from adhering the slag inside the pipes. The separator separates and recovers the solidified slag from the gas along with water, but the entire process of slag suction work involves jetting out cooling water from the suction head, which can cause problems such as excessive suction of slag. If a suction transport problem occurs, the cooling water supply will be automatically stopped, but the excess cooling water that has already been spouted out will reach a high temperature from the suction port! The ff falls into the hot water & the steepness cuts down,
There was still some room for safety.

In view of the above-mentioned circumstances, it is an object of the present invention to improve the efficiency of cooling water during slag suction work by using a rational improvement method while maintaining good slag removal and recovery performance. The purpose is to greatly improve the safety against falling onto the hot water, and to make it possible to avoid the suction slag conduit route 7f.

The characteristic means of the method of the present invention is that a suction head suction port is located in a pufferfish above the bath water, and the slag from the suction head suction port is disposed near a separator that separates cooling water and assimilated slag from gas. The sardine slag'
It solidifies and is sucked and transported to the ``C'' separator, and its functions and effects are as follows.

In other words, is it water when the suction slag is placed in the suction head? i
＃Transport it in liquid form to the seventh pallet without turning it into a garden,
Cooling water is supplied to the liquid slag near the separator or near the separator to solidify the slag into granules. Similarly, it can function against granular solidification and severe cooling, and the slag removal and recovery performance is as high as before (
Needless to say, it is possible to maintain cooling water unexpectedly during slag suction work. :@I have come to be able to completely avoid ξ taking a bath.

Moreover, after air begins to be sucked from the suction head suction port due to the descent of the slag surface, cooling water is flowed from the suction head to the slab water cooling section, solidifying the logging slag in the electric circuit into particles, and suctioning and transporting the slag to the separator. In particular, m# of cooling water during the above-mentioned slag suction operation.
It is possible to avoid assimilation and adhesion of logging slag into the pipeline without compromising the prevention of edema, and it is possible to maintain high suction and transportability of slag, making it possible to prevent overall binding and collapsing slag. It has been possible to greatly improve the safety of slag removal work while maintaining high removal efficiency.

Next, an embodiment of the present invention will be described in detail based on illustrative drawings.As shown in Fig. # # (L) Place i in the slag (g) floating above! At the same time, the slag (S) is suctioned and removed from the Dekujon head suction port (21), and the suctioned slag (S)
is suctioned and transported via the suction tube (4) to the separator +i).

Then, throw it into the inlet of the separator (6) -fC cooling section t
el Kν, cooling water (W
The solidified slag (&) separated from the gas (G) by the separator 151 and water are collected in a water tank +71 K,
Further, the slag #solidified slag (8) is lifted and recovered by a conveyor (8) equipped in the water tank (2012).

Note that (9) in the figure is a condenser t that discharges water vapor generated in the water cooling q out of the gas (G) separated by the separator (6) into condensate water.

The slag suction removal method using the suction head (2) will be explained in more detail in Figures 1 and 2 (A), (
As shown in (b) and (c), first, while supplying approximately the same amount of air (A) as the suction air volume from the air supply MI pipe 4 connected to the suction head (in the suction operating state), ,
Lower the suction head (2) vertically and open the suction head [the state where the end S of the inlet (ga) is close to the interface between the bath water (L) and the slag (S). 2) into the molten metal slag (S).

Then, the air supply pipe is interposed with a self-help control device (gradually throttles the flow rate).
By reducing the amount of air supplied during operation, the degree of vacuum inside the comb head (2) and the suction tube (4) is increased, and the
When the suction of the slag (s) is gradually and smoothly started at m#, the suction slag (S) is transferred to the separator (8).
The slag is transported under static pressure toward the Il side, and the slag is solidified and recovered as described above.

When the suction removal of the slag is almost complete and the slag surface descends until a gap is formed between the suction head suction port (gm) and the upper surface of the slag slag (S) above the casting metal,
A decrease in the degree of vacuum in the nine suction optical path due to the external air (A) being sucked together with the slag (S) from the gap is detected by a vacuum degree sensor attached to the front end of the suction tube (4), and Based on the detection results, the suction head (
2) and then operate the enclosure valve (Vw) of the cooling water supply pipe O barrel by the automatic control system * (11), thereby controlling the cooling water (W) supplied by the t-suction head (
2) to the cooling section (11), the flowing cooling water (w) causes the slag (g) to be sucked from the suction head suction port (ga), and
In the above-mentioned static pressure transportation process, the cut fc residual slag (S) is solidified into particles in the suction pipe (4), and the solidified slag (S) is
) is suctioned and transported to the sepacita lit to complete the slag removal and recovery work.

In most of the suction removal process of pickles and slag,
By eliminating the cooling water supply f to the suction head (S), the risk of cooling water accidentally falling from the VC suction head inlet (21) onto # # (L) is avoided, and safety is improved. By flowing the cooling water (W) from the suction head (2) toward the separator V-fil side only after air starts to be sucked out from the suction head suction port (21) due to the descent of the slag bare surface, Suction tube for residual slag (S) (Ilt with assimilation into 4y)
This is to prevent suction'l (4+) and maintain good transportability.

In addition, there is a suction head inlet (2) in the casting slag (S).
m), when positioning the suction head inlet (
2a) is VCed so that it can be brought precisely close to the interface between the bath water (L) and the slag (S) within a range where bath # (L) will not be inhaled, as shown in Figure 2. Bath water slag (!3) due to slag suction during static pressure transport
't- can be almost completely removed by rc@, so even if the cooling water is supplied to the suction head (2) at the final stage of the work after the suction head (2) is evacuated from above the bath water (L). As a result, it is possible to reliably prevent the cooling water from accidentally falling onto the groove during the entire work process, and safety t'' can be further improved.

Furthermore, the cooling water supply operation to the comb head (2) may be performed manually instead of being performed dramatically based on the degree of vacuum detection as described above.

Furthermore, instead of transporting the suction slag (S) to the separator (5) side by complete static pressure transport, by maintaining an appropriate amount of air supplied to the suction rad, pneumatic transport ° You may do so.

[Brief explanation of drawings]

The drawings show an example of the hot water slag vA* method according to the present invention, Figure #I1 is a schematic system diagram of the bath water slag removal device, and Figures 8 (a), (b), and (c) are slag removal devices, respectively. It is a figure showing an inhalation procedure. (2)...Suction head, (ga)...
...Suction head inlet, (6) ...Separator, (Champion ...Water, cold part, (L) ...
...*#, (S)...Slag, (W)...
··Cooling water. Procedural amendment l Indication of the case 1981 Patent application No. 19159165; 2, Name of the invention Molten metal slag removal method 3, Person making the amendment Relationship to the case Patent Applicant address Masatsu Higashi/Chome Koban, Naniwa-ku, Osaka-shi, Osaka Prefecture y2 name (105) Kubota Iron Works Co., Ltd. 4 Agent Showa Year Month Day (Delivery date) 7. Contents of the amendment In the detailed statement, page C // line ~ lj line ``Cooling water supply...''
Old... There was room. Correct J into the translation.

Claims (1)

[Claims] The suction head suction port (g-) is located in the slag (S) above the bath water (L), and the suction head suction port (
The slag (S) from No. 20 is transferred to a water cooling section (
There is air transport in 6) - static pressure transport', and as the slag surface descends, air begins to be sucked from the synapse head (gate 1) and then from the suction head (2) to the water cooling section (6). ) is a method for removing slag from hot springs, in which the cooling water (W) is flowed through the slag (W) to solidify the slag (S) and the slag (S) is sucked and transported to the separator 1r11.