TWI826274B - Method for evaluating slurry of repair material of blast furnace and method for repairing runner of blast furnace - Google Patents

Abstract

The present invention relates to a method for evaluating slurry of a repair material of a blast furnace and a method for repairing a runner of the blast furnace. In the method for evaluating the slurry of the repair material of the blast furnace, a water retention analysis is performed on the slurry of the repair material for the blast furnace to smoothly delivery the slurry through a delivering pipe. Besides, in the method for repairing the runner of the blast furnace, an inner well of the delivering pipe is totally coated with a mortar to prevent the delivering pipe from clogging. Moreover, a feeding frequency of a binding liquid is adjusted via a remote-control device, such that a mixture of the repair material of the blast furnace is immediately adhered to the working lining of the runner, thereby shortening time for repairing the runner of the blast furnace.

Description

Evaluation method of blast furnace repair material slurry and repair method of blast furnace runner

The present invention relates to a method of evaluating the slurry of a blast furnace repair material and a method of repairing a blast furnace runner, and in particular, to a method of using the water retention property of a slurry of a blast furnace repair material to evaluate whether it is suitable for repairing a blast furnace runner. A method for evaluating slurry, and a method for repairing blast furnace flow channels using the evaluated slurry.

Blast furnace repair materials include slurry and bonding fluid. In the method of repairing the blast furnace flow channel, the slurry is transported to the mixing zone in the spray gun head through one transportation pipeline, and the combined liquid is transported to the aforementioned mixing area through another transportation pipeline to mix the two and obtain the blast furnace repair mixed material. . Immediately, the blast furnace repair mixed material is sprayed onto the damaged residual lining of the blast furnace flow channel to repair the damaged residual lining.

In terms of repairing the blast furnace runner, the key is to smoothly spray the blast furnace repair mixture onto the damaged remaining lining of the blast furnace runner, and to have the blast furnace repair mixture quickly adhere to the damaged remaining lining. However, the conventional repair method of blast furnace flow channels does not evaluate the slurry material, so the slurry material often blocks the transportation pipeline during construction.

In addition, during the repair of the mixed materials in the blast furnace, two construction workers are required because the distance between the injection device and the blast furnace flow channel is 5 to 10 meters. One construction worker is located close to the blast furnace flow channel, and another construction worker is located close to the injection device. The construction workers close to the blast furnace flow channel observed the situation after the blast furnace repair mixed material was sprayed onto the damaged residual lining, and reported back to the construction workers close to the injection device. The construction workers close to the injection device adjust the discharging frequency of the binding fluid based on the feedback, so that the slurry of the blast furnace repair mixed material injected contains an appropriate amount of binding fluid and has appropriate adhesion, so that it can immediately adhere to the damaged damage. Lining. However, due to the high noise in the construction environment and poor visibility, communication between the two construction workers was difficult, so the discharging frequency of the binding fluid could not be adjusted immediately, resulting in a waste of slurry, or the poor adhesion of the slurry, which reduced the repair effect. .

In view of this, there is an urgent need to develop a new slurry evaluation method for blast furnace repair materials and a new blast furnace runner repair method to improve the above shortcomings.

In view of the above problems, one aspect of the present invention is to provide a method for evaluating blast furnace repair material slurry. This method of evaluating the slurry of blast furnace repair materials analyzes the water retention of the slurry of blast furnace repair materials to ensure that the transportation pipeline can transport the slurry smoothly.

Another aspect of the present invention provides a method for repairing blast furnace runner. The method of repairing the blast furnace runner is to completely cover the inner pipe wall of the conveying pipeline with refractory slurry before spraying the blast furnace repair mixture to lubricate the inner pipe wall and avoid blockage of the conveying pipeline. During the injection of the blast furnace repair mixed material, the discharging frequency of the combined fluid is controlled through a remote remote control device so that the blast furnace repair mixed material can quickly adhere to the damaged remaining lining of the blast furnace runner, thereby shortening the repair time of the blast furnace runner.

According to one aspect of the present invention, a method for evaluating the slurry of blast furnace repair materials is proposed, which is used to evaluate whether the slurry of blast furnace repair materials is suitable for repairing blast furnace flow channels. Slurry is provided in the evaluation method of slurry for blast furnace repair materials. A water retention analysis of the slurry was performed to evaluate the suitability of the slurry for repairing blast furnace runners.

In water retention analysis, a test setup is provided. The test device includes cylinder, piston and hydraulic system. The cylinder has a screen and a drain valve, wherein the screen is disposed in the cylinder and horizontally divides the cylinder into an accommodation space and a drain space. The piston is movably arranged in the cylinder. The bottom surface of the piston, the top surface of the screen and part of the side wall of the cylinder surround it to form a receiving space. The bottom surface of the screen, the other part of the side wall of the cylinder and the bottom surface of the cylinder surround it in a row. Liquid space, the accommodation space is located on the drain space, and the drain valve is located at the bottom of the drain space. The hydraulic system connects the piston. Next, fill the accommodation space with slurry, and then perform a pressurization step on the slurry, using a hydraulic system to apply pressure to the slurry through the piston. When the pressure reaches the threshold, the drain valve is opened. After the pressure holding time, if the water of the slurry flows out from the drain valve, it is judged that the slurry of the blast furnace repair material is not suitable for repairing the blast furnace flow channel, or if the water of the slurry does not flow out from the drain valve, it is judged that the slurry of the blast furnace repair material is not suitable for repairing the blast furnace flow channel. Suitable for repairing blast furnace runners.

According to an embodiment of the present invention, the operation of filling the slurry in the accommodation space is to cover the entire top surface of the screen with the slurry.

According to another embodiment of the present invention, the slurry includes a solid composition and water, wherein the solid composition is selected from the group consisting of alumina, silicon oxide, silicon carbide, carbonaceous materials and combinations thereof.

According to another embodiment of the present invention, based on the usage amount of slurry being 100 weight percent, the usage amount of water is 7 to 9 weight percent.

According to another embodiment of the present invention, the threshold value is 3.0MPa to 3.5MPa.

According to another embodiment of the present invention, the pressure holding time is 8 minutes to 12 minutes.

According to another aspect of the present invention, a method for repairing a blast furnace runner is proposed. In the repair method of blast furnace runner, a slurry approved by the aforementioned evaluation method of slurry for blast furnace repair materials is provided. Then, use refractory mud to completely cover the inner wall of the transportation pipeline. Mix the slurry and the binding liquid to obtain the blast furnace repair mixed material, in which the slurry is transported to the mixing area through a conveying pipeline covered with refractory mud, and the binding liquid is transported to the mixing area through a remote remote control device at a discharging frequency. Subsequently, the blast furnace repair mixture is sprayed onto the damaged residual lining of the blast furnace flow channel to form a repair layer on the damaged residual lining.

According to another embodiment of the present invention, when the blast furnace repair mixture material adheres to the damaged tube wall, the discharging frequency of the combined liquid is maintained.

According to another embodiment of the present invention, when the blast furnace repair mixed material slips from the damaged residual lining, the discharging frequency of the combined liquid is increased.

According to another embodiment of the present invention, when the blast furnace repair mixed material rebounds from the damaged residual lining, the discharging frequency of the combined liquid is reduced.

According to another embodiment of the present invention, the discharging frequency is 10Hz to 60Hz.

The evaluation method of the slurry of the blast furnace repair material and the repair method of the blast furnace runner of the present invention are applied. The evaluation method of the slurry of the blast furnace repair material performs a water retention analysis on the slurry of the blast furnace repair material, so as to smoothly transport the slurry through the transportation pipeline. material. In addition, the blast furnace flow channel repair method requires the refractory mud to completely cover the inner pipe wall of the transportation pipeline before spraying the blast furnace repair mixture to lubricate it and avoid blockage of the transportation pipeline. Furthermore, during the blast furnace repairing process of the mixed material, the discharging frequency of the binding liquid is controlled through a remote remote control device, so that the blast furnace repairing mixed material can quickly adhere to the damaged lining of the blast furnace flow channel, thereby shortening the blast furnace flow channel. Patching time.

The making and using of embodiments of the invention are discussed in detail below. It is to be appreciated, however, that the embodiments provide many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are illustrative only and are not intended to limit the scope of the invention.

Please refer to Figure 1. The evaluation method 100 of blast furnace repair material slurry is used to evaluate whether the blast furnace repair material slurry is suitable for repairing blast furnace flow channels. In detail, in the method 100 for evaluating slurry of blast furnace repair material, slurry is provided, as shown in operation 110 . The slurry of blast furnace repair material may include blast furnace repair material (solid composition) and a solvent, wherein the solid composition may be selected from the group consisting of alumina, silicon oxide, silicon carbide, carbonaceous materials and combinations thereof, and the solvent May contain water. For example, the carbonaceous material may be a carbonaceous material commonly used by those with ordinary knowledge in the technical field to which the present invention belongs. In some embodiments, the slurry may be a commercially available slurry formulated with water (as a solvent).

After operation 110 , a water retention analysis is performed on the slurry to evaluate whether the slurry is suitable for repairing blast furnace flow channels, as shown in operation 120 . If the slurry is stored for too long or is prepared incorrectly, solid-liquid separation will occur in the slurry. This solid-liquid separated slurry will block the delivery pipeline, making it impossible to deliver the slurry. Therefore, before repairing the blast furnace flow channel, the water retention of the slurry should be analyzed to avoid the aforementioned blockage.

Referring to Figures 2 and 3, in the water retention analysis method 200, a test device 300 is provided, as shown in step 210. The test device 300 includes a cylinder 310, a piston 320 and a hydraulic system 330. The cylinder 310 has a screen 311 and a drain valve 312. The screen 311 is disposed in the cylinder 310 and horizontally divides the cylinder 310 into an accommodation space 313 and a drain space 314.

The piston 320 is movably disposed in the cylinder 310, wherein the bottom surface 320b of the piston 320, the top surface 311t of the screen 311, and a part of the side wall 310sa of the cylinder 310 surround a receiving space 313. The bottom surface 311b of the screen 311, the other side wall 310sb of the cylinder 310 and the bottom surface 310b of the cylinder 310 surround a drainage space 314. The accommodating space 313 is located on the drainage space 314, and the drainage valve 312 is located in the drainage space. The bottom of 314. In addition, the hydraulic system 330 is connected to the piston 320 .

After step 210, the slurry is filled into the receiving space 313, as shown in step 220. After step 220, the slurry is pressurized, as shown in step 230. For example, a hydraulic system 330 applies pressure to the slurry through a piston 320 . In some embodiments, the slurry can cover the entire top surface 311t of the screen 311 to improve the accuracy of water retention analysis.

After step 230 , when the pressure exerted by the hydraulic system 330 reaches the threshold, the drain valve 312 is opened, as shown in step 240 . If the drain valve 312 is opened when the applied pressure does not reach the threshold, the result of the water retention analysis will be inaccurate. In some embodiments, the threshold may be 3.0MPa to 3.5MPa, and the pressure holding time may be 8 minutes to 12 minutes. When the threshold value is within the aforementioned range, the accuracy of water retention analysis can be improved. In addition, when the pressure holding time is within the aforementioned range, the accuracy of water retention analysis can be further improved.

After the pressure holding time, observe whether the water of the slurry flows out from the drain valve 312, as shown in step 250. If the water contained in the slurry flows out from the drain valve 312 (or is called water bleeding), it is determined that the slurry of the blast furnace repair material is not suitable for repairing the blast furnace flow channel, as shown in step 261. On the contrary, if the water contained in the slurry does not flow out through the drain valve 312, it is determined that the slurry of the blast furnace repair material is suitable for repairing the blast furnace flow channel, as shown in step 262.

Referring to FIG. 4 , in the blast furnace runner repair method 400 , a slurry approved by the above-mentioned evaluation method of blast furnace repair material slurry is provided, as shown in operation 410 . In some embodiments, the blast furnace repair mixture includes a blast furnace repair material slurry and a bonding fluid. In some specific examples, the solid composition of the refractory slurry used to lubricate the pipeline may include aluminum compounds, silicates, phosphates and lignosulfonates, and the binding liquid may include a saturated aqueous solution of inorganic salts.

The salts contained in the binding fluid can form bonds with the composition of the blast furnace repair material slurry to increase the adhesion of the blast furnace repair material. When the combined fluid and blast furnace repair material slurry are mixed in an appropriate proportion to form a blast furnace repair mixture, the blast furnace repair mixture has appropriate adhesion. This adhesion allows the blast furnace repair mixture to adhere to the damaged remaining lining of the blast furnace runner. , and the blast furnace repair mixture attached to the damaged residual lining can be solidified at high temperatures of the damaged residual lining to form a repair layer described later.

The injection device used in the blast furnace runner repair method 400 is not particularly limited, but it can be used for the purpose of injecting the blast furnace repair mixture material to the damaged remaining lining of the blast furnace runner, and can be used by those with ordinary knowledge in the technical field to which the present invention belongs. Common spray device.

For example, the injection device has three tanks, which are a mixing tank, a pumping tank and a combined liquid tank. The mixing tank is used to mix the solid composition of the blast furnace repair material slurry and the solvent (such as water) to form the blast furnace repair material slurry. The pumping tank is used to contain the slurry of blast furnace repair materials after stirring in the mixing tank, and pump the slurry to the delivery pipeline and then to the spray gun head. The combined liquid tank is used to transport the combined liquid to the spray gun head, so that the slurry of the blast furnace repair material and the combined liquid are quickly mixed into the blast furnace repair mixed material in the mixing zone in the spray gun head. The blast furnace repair mix is then sprayed onto the remaining lining of the flow channels. Specifically, the slurry and bonding liquid of blast furnace repair materials can be transported through pumps.

After operation 410, before injecting the blast furnace to repair the mixed material, the inner pipe wall of the transportation pipeline is completely covered with refractory slurry to lubricate the inner pipe wall of the transportation pipeline, as shown in operation 420. In some embodiments, the water content of the refractory mud is 45 to 60 weight percent, and preferably 500 weight percent. If the inner pipe wall of the transportation pipeline is not covered with refractory mud, the friction between the slurry of the blast furnace repair material and the inner pipe wall cannot be reduced, so the slurry of the blast furnace repair material is easily blocked in the transportation pipeline.

After operation 420 , during the injection of the blast furnace repair mixed material, the slurry and the bonding liquid are mixed to obtain the blast furnace repair mixed material, as shown in operation 430 . Specifically, when the slurry of the blast furnace repair material is pumped to the delivery pipeline and the spray gun head, the combined liquid is simultaneously transported to the spray gun head. In some embodiments, the slurry of the blast furnace repair material and the binding liquid are rapidly mixed in the mixing zone in the spray gun head to form the blast furnace repair mixed material, wherein the usage amount of the slurry based on the blast furnace repair material is 100 wt. percentage, the usage amount of the binding fluid is 0.1% by weight to 1% by weight, so that the blast furnace repair mixed material formed by mixing the binding fluid and the slurry of the blast furnace repair material can easily adhere to the damaged residual lining of the blast furnace flow channel.

After operation 430 , the blast furnace repair mixture is sprayed onto the damaged residual lining of the blast furnace flow channel to form a repair layer on the damaged residual lining, as shown in operation 440 . In detail, the slurry of the blast furnace repair material is transported to the mixing zone in the spray gun head through the transportation pipeline, and the discharging frequency is controlled through the remote remote control device to transport the combined liquid to the mixing zone in the spray gun head. Since the construction personnel can adjust the discharging frequency of the binding fluid through the remote remote control device, the construction personnel can control the amount of the binding fluid entering the mixing zone, that is, the mixing ratio of the binding fluid and the slurry of the blast furnace repair material can be controlled. This mixing ratio can Control the adhesion of the blast furnace repair mixture formed by mixing the two.

In some specific examples, the combined liquid is delivered to the mixing zone via a remote remote control device at a discharging frequency, where the discharging frequency may be, but is not limited to, 10 Hz to 60 Hz. This discharging frequency can make the blast furnace repair mixed material formed by mixing the combined liquid and the blast furnace repair material slurry to easily adhere to the damaged residual lining of the blast furnace flow channel.

When the adhesion of the blast furnace repair material is within a suitable range, after the blast furnace repair mixed material is sprayed onto the damaged remaining lining of the blast furnace runner, the blast furnace repair mixed material can adhere to the damaged remaining lining without falling off. In addition to the mixing ratio of the binding fluid and the slurry of the blast furnace repair material, the adhesion of the blast furnace repair mixture will also be affected by the temperature of the damaged lining of the blast furnace flow channel. Therefore, the mixing ratio of the binding fluid and the slurry of the blast furnace repair material It can also be adjusted according to the temperature of the damaged residual lining. The temperature of the damaged residual lining is affected by the residual heat remaining in the blast furnace runner after the high-temperature molten iron is tapped. Specifically, the greater the residual heat, the higher the temperature of the damaged residual lining, and vice versa. Adjusting the discharging frequency of the binding fluid through a remote remote control device can avoid the problem of poor communication of manual feedback of spraying conditions caused by high noise in the construction environment and poor visibility.

Incidentally, the aforementioned remote remote control device may be a remote remote control device commonly used by those with ordinary skill in the technical field to which the present invention belongs, such as a remote remote control. It is understandable that the injection device is equipped with a signal receiver to receive the discharging frequency input from the remote remote control by the construction personnel.

In addition, as those with ordinary skill in the technical field of the present invention can understand, during the injection of the blast furnace repair mixed material, the slurry and the combined liquid of the blast furnace repair material are continuously transported to the mixing zone in the injection gun head to continuously It is mixed into a blast furnace repair mixed material, and then the blast furnace repair mixed material is continuously supplied until the injection is terminated. Therefore, the above-mentioned operation 430 and the later-described operation 440 can be performed simultaneously.

The blast furnace repair material is sprayed onto the damaged residual lining of the blast furnace runner to form a repair layer on the damaged residual lining, as shown in operation 440 . Therefore, the construction personnel can be close to the blast furnace flow channel to be repaired to easily observe the situation after the blast furnace repair material is sprayed onto the damaged pipe wall, and adjust the discharging frequency of the binding fluid through the remote remote control device according to the spray situation. For example, in some embodiments, when the blast furnace repair mixture adheres to the damaged residual lining, an appropriate amount of binding fluid is mixed with the slurry of the blast furnace repair material, so that the blast furnace repair mixture has appropriate adhesion, so There is no need to adjust the discharging frequency of the combined solution, the original discharging frequency is maintained.

In other embodiments, when the blast furnace repair mixture slips from the damaged residual lining, too little binding fluid is mixed with the slurry of the blast furnace repair material, and the adhesion of the blast furnace repair mixture is too low, so it is necessary to increase the output of the binding fluid. Feed frequency. In some embodiments, when the blast furnace repair mixture rebounds from the damaged residual lining, too much bonding liquid is mixed with the slurry of the blast furnace repair material. The adhesion of the blast furnace repair mixture is too high, so the output of the bonding liquid needs to be reduced. Feed frequency.

Accordingly, in the blast furnace runner repair method 400 of the present invention, the water retention of the slurry is measured before construction to ensure that the slurry of the blast furnace repair material can be smoothly transported through the transportation pipeline. In addition, before spraying, lubricate the inner pipe wall of the transportation pipeline with refractory mud and make the refractory mud completely cover the inner pipe wall of the transportation pipeline to avoid blockage of the transportation pipeline. Furthermore, during grouting, a remote remote control device is used to adjust the discharging frequency of the binding fluid to control the mixing ratio with the slurry of the blast furnace repair material. This remote remote control method can help construction workers adjust the discharging frequency of the binding fluid according to the spraying situation in noisy construction environments and when the spraying device is far away, thereby avoiding waste of materials and shortening the repair time of the blast furnace flow channel.

Application of evaluation method for blast furnace repair material slurry

Examples 1 to 2 and Comparative Example 1

The test device of the present invention was used to conduct water retention analysis on the three slurries in Table 1. The specific conditions and evaluation results are as shown in Table 1 below. Taking the usage amount of slurry as 100 weight percent, calculate the additional amount of water added to the slurry (weight percent). Furthermore, the gravity value is based on the testing method of GB/T 4513.4-2017.

Table 1 slurry Amount of water added (%) Artesian value (mm) Water retention On-site usage Example 1 normal slurry 7.3 170 No secretion No clogging in the tube, smooth spraying Example 2 normal slurry 8.0 160 No secretion No clogging in the tube, smooth spraying Comparative example 1 Abnormal slurry 8.6 150 Bleeding occurred at 2 minutes and 30 seconds stopper tube

Please refer to Table 1. The evaluation method of slurry for blast furnace repair materials of the present invention can eliminate slurry materials with poor construction performance before construction, thereby avoiding blockage of the transportation pipeline during on-site construction and delaying the tapping time.

In summary, the evaluation method of the slurry of the blast furnace repair material of the present invention analyzes the water retention of the slurry of the blast furnace repair material, so as to smoothly transport the slurry through the transportation pipeline. In addition, the blast furnace flow channel repair method of the present invention uses refractory mud to completely cover the inner pipe wall of the transportation pipeline to avoid blockage of the transportation pipeline. Furthermore, the discharging frequency of the combined liquid is controlled through a remote remote control device, so that the blast furnace repair mixed material can quickly adhere to the damaged remaining lining of the blast furnace flow channel, thereby shortening the repair time of the blast furnace flow channel.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended patent application scope.

100,200,400:Method 110,120,410,420,430,440: Operation 210,220,230,240,250,261,262: Steps 300:Test device 310:Cylinder block 311:Screen 311t:Top surface 310b, 320b, 311b: bottom surface 310sa, 310sb: side wall 312: Drain valve 313: Accommodation space 314: Drainage space 320:piston 330:Hydraulic system

In order to have a more complete understanding of the embodiments of the present invention and its advantages, please refer to the following description together with the corresponding drawings. It must be emphasized that various features are not drawn to scale and are for illustration purposes only. The relevant diagram content is explained as follows: FIG. 1 is a flow chart illustrating a method for evaluating slurry of blast furnace repair materials according to one embodiment of the present invention. Figure 2 is a flow chart illustrating water retention analysis according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a testing device according to an embodiment of the present invention. Figure 4 is a flow chart illustrating a method for repairing a blast furnace runner according to an embodiment of the present invention.

100:Method

110,120: Operation

Claims (11)

An evaluation method for the slurry of blast furnace repair material, used to evaluate whether the slurry of the blast furnace repair material is suitable for repairing a blast furnace runner, wherein the evaluation method includes: provide the slurry; and A water retention analysis is performed on the slurry to evaluate whether the slurry is suitable for repairing the blast furnace flow channel, where the water retention analysis includes: A test device is provided, wherein the test device includes: A cylinder has a screen and a drain valve, wherein the screen is arranged in the cylinder and horizontally divides the cylinder into an accommodation space and a drain space; A piston is movably arranged in the cylinder, wherein a bottom surface of the piston, a top surface of the screen and a part of the side wall of the cylinder surround the accommodation space, and a bottom surface of the screen, the cylinder Another part of the side wall and a bottom surface of the cylinder surround the drain space, the accommodating space is located on the drain space, and the drain valve is located at a bottom of the drain space; and a hydraulic system connected to the piston; Fill the slurry in the accommodation space; performing a pressurizing step on the slurry, wherein a pressure is applied to the slurry through the piston by the hydraulic system; and When the pressure reaches a threshold, the drain valve is opened, and After a pressure holding time, if the water of the slurry flows out from the drain valve, it is judged that the slurry of the blast furnace repair material is not suitable for repairing the blast furnace flow channel; or After the pressure holding time, if the water of the slurry does not flow out from the drain valve, it is judged that the slurry of the blast furnace repair material is suitable for repairing the blast furnace flow channel. The method for evaluating the slurry of blast furnace repair materials as described in claim 1, wherein the operation of filling the slurry in the accommodating space is to cover the entire top surface of the screen with the slurry. The evaluation method of blast furnace repair material slurry as claimed in claim 1, wherein the slurry contains a solid composition and the water, wherein the solid composition is selected from the group consisting of alumina, silicon oxide, silicon carbide, carbon A group composed of qualitative materials and their combinations. The evaluation method of blast furnace repair material slurry as described in claim 3, wherein based on the usage amount of the slurry being 100 weight percent, the usage amount of water is 7 to 9 weight percent. The evaluation method of blast furnace repair material slurry as described in claim 1, wherein the threshold is 3.0MPa to 3.5MPa. The evaluation method of blast furnace repair material slurry as described in claim 1, wherein the pressure holding time is 8 minutes to 12 minutes. A method for repairing blast furnace runner, including: Providing the slurry approved by the evaluation method of slurry for blast furnace repair materials described in any one of claims 1 to 6; Use a refractory mud to completely cover an inner pipe wall of a transportation pipeline; Mix the slurry and a binding liquid to obtain a blast furnace repair mixed material, wherein the slurry is transported to a mixing area through the delivery pipeline covering the refractory slurry, and the slurry is transported at a discharging frequency through a remote remote control device Combine the liquid to the mixing zone; and The blast furnace repair mixture is sprayed onto a damaged residual lining of the blast furnace flow channel to form a repair layer on the damaged residual lining. The method for repairing blast furnace flow channels as described in claim 7, wherein the discharging frequency is maintained when the blast furnace repair mixed material adheres to the damaged residual lining. The method for repairing blast furnace flow channels as described in claim 7, wherein when the blast furnace repair mixed material slips from the damaged residual lining, the discharging frequency is increased. The method for repairing blast furnace flow channels as described in claim 7, wherein when the blast furnace repair mixed material rebounds from the damaged residual lining, the discharging frequency is reduced. The method for repairing blast furnace flow channels as described in claim 7, wherein the discharging frequency is 10Hz to 60Hz.

Images