Mud amount

Choosing the appropriate amount of mud when clogging is to ensure the proper depth of the iron mouth and the integrity of the mud pack. It should be combined with the changes of the previous conditions of the tapping, the amount of mud and the depth of the iron to determine the maintenance or increase slowly. Reduce the amount of mud. It is generally believed that the suitable depth of the iron mouth is 45% of the radius of the hearth. It is also believed that the depth of the iron mouth is about 1.2-1.3 times the thickness of the furnace wall. Depending on the furnace capacity, the depth of the iron mouth, and the quality of the mud, the optimum amount of mud is different and needs to be explored. The actual situation is sometimes worse: some blast furnaces are seriously insecure when they are muddy. Whether the depth of the iron mouth is sufficient, whether the mud mud is excellent in erosion resistance and scouring performance, they all want to hit the whole gun every time; and some use the mud on the blast furnace. In the province, the number of irons per day is close to 15 times, and only 1t of gun mud is used. Excessive mud is pure waste, and the excess cannon is floating and scattered. In the end, it only makes more slag. However, if the mud is too little, the formed mud package is incomplete. It is prone to false fractures and pseudo-osmotic iron during use. problem.

Sanding method

The timing of the blockage after the end of the iron is very important. There have always been some different opinions. Some people think that the wind is the best, and some people think it is appropriate to block the wind when it comes to the wind. The method of splitting mud and multiple pressures during the mud process is more conducive to the formation and densification of the mud pack, and is beneficial for preventing the iron break, the iron seepage, and prolonging the iron discharge time.

Iron

The choice of the diameter of the drill bit at the opening determines the speed of tapping and the time of tapping, and also affects the erosion of the lining of the slag iron. It is generally considered that the iron tapping is about 12 times per day. It is found that the sinter of the mud is slightly poor, and when there is a tidal iron mouth, it is opened first, and then ironed and then opened, or a large drill bit is used outside the iron mouth. The drill bit can alleviate the splash phenomenon in the initial stage of iron production; it is found that the strength of the gun mud is high, the slight iron is infiltrated, etc., and the alloy drill bit and water mist are used for cooling, which makes it easier to open smoothly; when it is necessary to oxygen the iron mouth, it is necessary to prevent the cause Improper operation and greatly expand the cross-sectional area of the tunnel; unless it is absolutely necessary, try to avoid the operation of the gun, because it is easy to damage the integrity of the mud pack and the tunnel; minimize the phenomenon of secondary tapping or gunning. This series is easy to affect the stability of the iron mouth and slag iron emissions, affecting the service life of the hearth lining brick.