KR19990013130A - Large Waterway Cover Refractory Wear Control - Google Patents

Abstract

The present invention relates to a wear control apparatus by the refractory temperature uniformity of the furnace large-scale waterway cover, in the past, by connecting the refractory cooling of the large waterway cover with the atmosphere in a natural cooling method, local cooling is not possible, the refractory wear state with the naked eye In the present invention, it is impossible to check the refractory abrasion condition due to the radiant heat of the melt. However, in the present invention, a thermometer is installed between the refractory and the refractory by dividing the cover surface into three sections. And a flow meter for detecting the flow rate in the control valve and a flow meter for detecting the flow rate in accordance with the opening degree of the control valve, and the drainage pipe being drained, and the temperature and the water supply and drainage of the thermometer. Melting by configuring the control unit to control the flow rate and control valve of the flow meter By daetang also uniformly cooled cover according to the refractory temperature is a daetang also control the wear of the refractory material of the cover.

Description

Large Waterway Cover Refractory Wear Control

The present invention relates to a refractory wear control device for a large hot water cover, and more specifically, to divide the large hot water cover into three lengthwise directions to locally install a cooling pipe of a water-cooling method between the refractory to refractory by uniformly cooling the temperature of the refractory. It relates to a refractory wear control device for preventing the wear of the.

In general, the melt melt reduced in the furnace passes through the exit port and is discharged together out of the furnace by the pressure in the furnace and slag (SLAG) furnace.

The discharged melt moves along the flowing passage (hereinafter referred to as the large bath), and the slag having a small specific gravity is separated to the top of the skimmer through the SKIMMER, and the heavy waste is separated to the bottom of the skimmer. Therefore, the separated molten iron is repaired and moved to the molten iron car through the water run, while the slag separated through the skimmer is processed by the ash processing facility to finely granulate the treatment plant. The melt discharged at high temperature (1520 ℃) protects the operator by installing a refractory cover with a refractory to block radiant heat and prevent scattering. It also blocks dust and dust dust and moves it to one side. Environmental pollution is prevented.

In the related art, as shown in FIG. 1, a large hot water cover through which a melt flows is always fixed in a fixed state, and the temperature of the cover refractory itself is increased due to the radiant heat of the hot melt discharged at the same time as the starting line. When the operation of discharging the melt is finished, it is stagnated with the naturally flowing melt, and the large bath is cooled in contact with the air like the lid refractory material. Therefore, through the above work to identify and replace the refractory wear state of the large hot water cover, but there are the following problems.

First: During the melt flow, it is impossible to visually check the internal wear of the refractory of the large hot water cover due to radiant heat.

Second: The cover of Daetangdo has an iron shell surrounding the refractory, but it is almost lost due to the refractory abrasion of the cover, so the radiant heat affects the iron shell and replaces the cover.

Third: When the melt flows in the large bath and when the melt is blocked and solidified, it is made of natural cooling by contact with air, so the cooling capacity is insufficient and local cooling adjustment is impossible.

Fourth: As the air temperature around the large hot water cover increases due to the radiant heat, the refractory wear rate is accelerated, causing frequent problems of the large hot water cover being replaced.

Therefore, the present invention was devised to solve such a conventional problem, and the large hot water cover for preventing the wear of the refractory by uniformly cooling the temperature of the refractory by installing a cooling pipe of the water cooling method locally between the refractory of the large hot water cover. The object is to provide a refractory wear control device.

1 is a cross-sectional view of the air-cooled large bath cover according to the prior art.

Figure 2 is a water-cooled perspective view of the refractory portion of the large hot water cover according to the present invention.

Figure 3 is a refractory water-cooled detailed view of the large bath cover according to the present invention.

Figure 4 is a process chart for the operation of the large water repellent cover refractory water cooling apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

1: Furnace 2: Outlet

3: large bath degree 4: large bath degree cover

5: left side 6: top side

7: right side 8: refractory

9: iron shell 10: main water supply pipe

11 ~ 19: Water supply pipe 20 ~ 28: Water supply flow meter

29 ~ 37: Control valve 38 ~ 46: Drainage pipe

45 ~ 53: Drainage flowmeter 54 ~ 62: Thermometer

66: control unit 63 ~ 65: cooling piping

The apparatus for controlling wear of a large-scale waterway cover refractory wear of the present invention for achieving the above object comprises: a pipe portion for transferring cooling water for refractory cooling of the large-waterway cover;

A flow meter for detecting a flow rate of the cooling water to be transferred;

A flow rate controller configured to control the flow rate of the coolant;

A detection unit detecting a large hot water cover refractory temperature;

And a control unit for controlling the devices.

The above and other objects and features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a water-cooled perspective view of the refractory portion of the large bath cover according to the present invention.

Figure 3 is a detail view of the refractory water-resistant refractory cover in accordance with the present invention.

The lid 4 is divided into three equal parts in the longitudinal direction (hereinafter, referred to as a front end, a middle part, and a rear end), that is, a left side surface 5, a front end portion, a middle portion, a tail portion, and an upper surface 6 ) Insert the water supply pipe (11-19) into the front end part, middle part, rear part and right side (7) to the end part, middle part, and rear part by a certain depth so as to enter between the refractory (8), and connect the pipe again. The refrigeration pipe (63-65) is installed in a streamlined form between the refractory (8) and the refractory (8) and then protrudes out of the cover (4) to connect the drain pipe (38-46).

Therefore, the water supply flowmeter 20-28 for detecting the cooling water flow rate is installed in the water supply pipe 11-19 connected to the main water supply pipe 10, and the control valve 29-37 is coupled to allow the flow rate adjustment. On the other hand, the drain pipe (38-46) is coupled to the drain flow meter (45-53) to detect the flow rate is drained.

And (3) cover (4) left side (5) tip part, middle part, tail part, right side (7) tip part, middle part, tail part, top part (6) tip part, middle part, tail part The hole (9) of the iron bar and the refractory (8) is grooved to a certain depth and then the thermometer (54-62) is seated. And controlling the deviation of the flow rate indication value of the water supply pipe 11-19 and the flow rate indication value of the discharge pipe 45-53, the opening state of the control valve 29-37, and the temperature of the refractory 8 of the cover 3 for each section. The control unit 66 is installed.

The operation according to the present invention having the above configuration will be described with reference to FIGS. 2 and 3.

That is, when the starting line is started at the outlet port 2 of the furnace 1 and the melt begins to flow along the large bath 3, the refractory 8 of the lid 4 of the large bath 3 has a high temperature due to the radiant heat of the melt. When the thermometer 54-62 provided between the refractory 8 and the refractory 8 detects an increase and reaches a constant temperature, the control unit 66 controls the water supply pipe 11-19 and the control valve 29-37. ), The cooling water flows in.

Therefore, the flow rate of the coolant flowed in is discharged through the direction of the flow meter (45-53), at which time the flow rate of the water supply flowmeter (20-28) and the flow rate of the drainage flowmeter (45-53) are compared and detected. The cooling pipe (63-65) provided between the (8) is detected by the controller 66 that the cooling water leaked by the melted hand to close the corresponding control valve (29-37).

Since the refractory (8) temperature is continuously increased by the continuously flowing melt, the control unit 66 controls the flow rate of the coolant to be high and low to prevent the refractory 8 from accumulating. On the other hand, the left side (5) leading part, middle part, tail part, upper surface (6) leading part, middle part, tail part, and right side (7) leading part, middle part, tail part are maintained so that the temperature is kept constant. (3) In the section in which the refractory (8) for each section of the cover (4) is worn out, the temperature rises quickly so that the thermometer (54-62) detects the control valve (29-37) in the control unit (66). Increasing the opening degree to supply more coolant flow rate to suppress the temperature rise, and the portion of the less refractory (8) wear is reduced to the flow rate (20-28) by gradually increasing the temperature rise rate The control unit 66 adjusts the opening degree of the control valves 29 to 37.

When the starting line is finished, the flowing melt is blocked, and the remaining melt is stagnant in the large tap water (3), so that the temperature of the refractory (8) of the cover of the large water bath (3) cooled by the cooling pipe (63-65) gradually drops for each section. The control unit 66 detects that the controller 66 controls the cooling temperature uniformly for each section, and when the refractory 8 temperature is lower than a certain level, the control valves 29 to 37 for each section are closed to cut off the coolant to abruptly change the temperature. It is set to prevent.

Figure 4 is a flow chart showing the operation relationship of the present invention, when the melt of the furnace is discharged to the large tap through the exit port to detect the temperature of the refractory temperature of the large tap cover cover in the thermometer (54 ~ 62) installed in each part do.

Next, the control unit 66 detects this, opens the control valves 29 to 37 of each unit, and compares and detects the temperature for each section in the thermometers 54 to 62 again.

Next, the controller 66 detects the temperature for each section and adjusts the opening value of the control valves 29 to 37 for each section based on the data, and supplies the water flowmeters 20 to 28 and the drainage flowmeters 45 to 53. Detect the flow rate. At this time, if a deviation between the water supply and the drain flow rate occurs more than a predetermined time, the controller 66 closes the corresponding control valves 29 to 37.

Subsequently, when the discharge of the melt is finished, the temperature is detected for each section. At this time, when the temperature of each section inside the cover is lowered by a predetermined temperature or less by natural cooling, the control unit 66 crushes the control valves 29 to 37.

Conventionally, while the melt of the high temperature (1520 ℃) flows while going out, it was not possible to check the wear condition of the refractory cover of the large hot water due to the radiant heat, but in the present invention, by installing a thermometer for each of nine sections, even in the local wear state It can be monitored automatically, so it is possible to know when to replace the large hot water cover.In addition, the cooling water flow rate is supplied to each section according to the temperature to suppress the refractory temperature imbalance at each section, and the temperature change rate is slowed to extend the life of the refractory. In addition, by inserting a cooling pipe between the refractory and the refractory to control the refractory temperature by the cooling water flowing into the pipe has the effect that can reduce the number of replacement of the hot water cover as long as the refractory life.

Preferred embodiments of the present invention are for the purpose of illustration and various modifications, changes, substitutions and additions are possible to those skilled in the art through the spirit and scope of the present invention as set forth in the appended claims.

Claims (1)

Left side, right side, top side, In the refractory wear control device of the large hot water cover is divided into a plurality, The large bath is also provided in the refractory of the left, right, and upper surface of the cover, From the exit, Daetang is divided into the tip, middle and tail in the longitudinal direction. A refractory wear control device for a large hot-water cover, comprising a water-cooled cooling system provided at each of the parts.