A molten iron smelting transfer protection process

Abstract

The present invention provides a molten iron smelting and transfer protection process, which comprises the following steps: a furnace mouth cover is sleeved on the furnace mouth of a molten iron smelting furnace, and the inner ring of the furnace mouth cover is attached to the outer surface of the furnace mouth; the smelting furnace is rotatably sealed by a protruding block of a cover plate arranged at the outer edge of the furnace mouth cover; threaded holes are provided on the protruding block of the cover plate for threaded fixation, and the molten iron is poured into the molten iron smelting furnace after smelting; the furnace mouth cover separates the molten iron that flows out and splashes when the molten iron is poured into the molten iron smelting furnace from the furnace mouth, and a guide groove is provided at the furnace mouth cover to guide the excess molten iron out, thereby effectively preventing the furnace mouth of the molten iron smelting furnace from being easily damaged during the pouring process.

Description

Technical Field

[0001] The present invention relates to the field of molten iron smelting, transfer and protection technology, and in particular to a molten iron smelting, transfer and protection technology. Background Art

[0002] Molten iron smelting can be manufactured into any shape according to different modeling requirements for later processing and production. However, there are some shortcomings in the existing molten iron smelting furnace mouth during use that need to be improved. The shortcomings are as follows: First, the existing molten iron smelting furnace mouth is easily damaged during the pouring process. Therefore, we have made process improvements and proposed a molten iron smelting transfer protection process. Summary of the Invention

[0003] The purpose of the present invention is to address the problems raised by the existing background technology. In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions: a molten iron smelting transfer protection process to improve the above-mentioned problems. The specific application is as follows: comprising the following steps: Step 1: a furnace mouth cover is placed at the furnace mouth of the molten iron smelting furnace, and the inner ring of the furnace mouth cover is attached to the outer surface of the furnace mouth; Step 2: the smelting furnace is rotatably sealed by a protruding block of a cover plate provided at the outer edge of the furnace mouth cover; Step 3: threaded fixation is performed through a threaded hole provided on the protruding block of the cover plate; Step 4: after molten iron smelting, the molten iron is poured into the molten iron smelting furnace; Step 5: the furnace mouth cover separates the molten iron splashing out when the molten iron smelting furnace is poured from the furnace mouth; Step 6: a guide groove is provided at the furnace mouth cover to guide out excess molten iron.

[0004] As the preferred technical solution of the present application, the furnace mouth cover in the step one is first polished on the inner surface of the furnace mouth cover during the process of inserting the furnace mouth, so that the furnace mouth cover and the furnace mouth form an interference fit, wherein the lower surface of the furnace mouth cover is in contact with the outer surface of the furnace mouth.

[0005] As a preferred technical solution of the present application, in the step 2, the protruding blocks of the covering plate are connected to the rotary wrench during the rotary sealing process, and the protruding blocks of the covering plate are arranged in a ring array on the outer surface of the covering plate, and gaps are provided between the protruding blocks of the covering plate.

[0006] As a preferred technical solution of the present application, in step three, threaded holes are provided on the protruding block of the cover plate to engage with bolts and fix them on the lower surface of the furnace mouth.

[0007] As a preferred technical solution of the present application, after the molten iron is smelted in step 4, the molten iron is poured into a molten iron smelting furnace and the temperature of the molten iron is set at 1600°C-1800°C.

[0008] As a preferred technical solution of the present application, the pressure of the molten iron in the smelting furnace in step 4 is set to 2400-6400 Pa.

[0009] As the preferred technical solution of the present application, in step five, the molten iron is first introduced into the ladle for pre-cooling when pouring into the molten iron smelting furnace, and is poured into the molten iron smelting furnace 20-30 cm away from the furnace mouth during the inversion process.

[0010] As a preferred technical solution of the present application, in the process of the guide trough in step six guiding out the excess molten iron, the molten iron is diverted out through the molten iron diversion channel.

[0011] As a preferred technical solution of the present application, it also includes step seven, when the molten iron furnace is subjected to a long-term impact on the furnace mouth cover, the furnace mouth cover is replaced to protect the furnace mouth.

[0012] As a preferred technical solution of the present application, in step six, a silicon-chromium alloy lining is provided at the furnace mouth cover.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the scheme of this application:

[0015] 1. A furnace mouth cover is placed over the furnace mouth of a molten iron smelting furnace, and the inner ring of the furnace mouth cover is attached to the outer surface of the furnace mouth; a convex block of a cover plate is provided at the outer edge of the furnace mouth cover to rotatably seal the smelting furnace; the molten iron is screwed into the furnace mouth after smelting by threaded holes provided on the convex block of the cover plate; the molten iron is poured into the molten iron smelting furnace after smelting; the furnace mouth cover separates the molten iron that flows out of the molten iron smelting furnace when pouring the molten iron from the furnace mouth, and a guide groove is provided at the furnace mouth cover to guide the excess molten iron, thereby effectively preventing the furnace mouth of the molten iron smelting furnace from being easily damaged during the pouring process;

[0016] 2. During the process of putting the furnace mouth cover on the furnace mouth in the step 1, the inner surface of the furnace mouth cover is first polished so that an interference fit is formed between the furnace mouth cover and the furnace mouth, which can effectively improve the tightness, wherein the lower surface of the furnace mouth cover is in contact with the outer surface of the furnace mouth, and during the process of rotating the cover plate protrusion block in the step 2, the cover plate protrusion block is connected to the rotary wrench and fixed by the rotary wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure provided for this application. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is a specific implementation of the present invention and is not limited to all embodiments.

[0019] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] like Figure 1 , a molten iron smelting transfer protection process, step 1: a furnace mouth cover is placed on the furnace mouth of the molten iron smelting furnace, and the inner ring of the furnace mouth cover is attached to the outer surface of the furnace mouth; step 2: the smelting furnace is rotatably sealed by a cover plate protrusion block provided at the outer edge of the furnace mouth cover; step 3: threaded fixation is performed through a threaded hole provided on the cover plate protrusion block; step 4: after molten iron smelting, the molten iron is poured into the molten iron smelting furnace; step 5: the furnace mouth cover separates the molten iron splashing out of the molten iron smelting furnace when the molten iron is poured into the furnace mouth; step 6: a guide groove is provided at the furnace mouth cover to guide out excess molten iron.

[0021] In the process of putting the furnace mouth cover on the furnace mouth in step one, the inner surface of the furnace mouth cover is first polished to make the furnace mouth cover and the furnace mouth form an interference fit, wherein the lower surface of the furnace mouth cover is in contact with the outer surface of the furnace mouth, and in the process of rotating the sealing block of the cover plate in step two, the cover plate protrusion block is connected to the rotary wrench, and the cover plate protrusion block is arranged in an annular array on the outer surface of the cover plate, and a gap is provided between the cover plate protrusion blocks, and in step three, the threaded holes are provided on the cover plate protrusion block to be bolted with the bolts and fixed to the lower surface of the furnace mouth, and in step four, after the molten iron is smelted, the molten iron is poured into the molten iron smelting furnace and the molten iron temperature is set At 1600℃-1800℃, after the molten iron is smelted in step 4, the molten iron is poured into the molten iron smelting furnace and the molten iron temperature is set at 1600℃-1800℃. In step 5, the molten iron is first introduced into the molten iron ladle for pre-cooling when poured into the molten iron smelting furnace. During the inversion process, the molten iron smelting furnace is poured 20-30cm away from the furnace mouth. In step 6, the guide groove diverts the excess molten iron through the iron water diversion channel during the process of diverting the excess molten iron. It also includes step 7. When the molten iron furnace is subjected to a long-term impact on the furnace mouth cover, the furnace mouth cover is replaced to protect the furnace mouth. In step 6, a silicon-chromium alloy lining is provided at the furnace mouth cover.

[0022] Working principle: During use, the present invention comprises the following steps: Step 1: a furnace mouth cover is placed on the furnace mouth of a molten iron smelting furnace, and the inner ring of the furnace mouth cover is attached to the outer surface of the furnace mouth. In the process of placing the furnace mouth cover in Step 1, the inner surface of the furnace mouth cover is first polished so that an interference fit is formed between the furnace mouth cover and the furnace mouth, wherein the lower surface of the furnace mouth cover is in contact with the outer surface of the furnace mouth;

[0023] Step 2: The smelting furnace is rotary sealed by the protruding blocks of the cover plate provided at the outer edge of the furnace cover. In step 2, the protruding blocks of the cover plate are connected to the rotary wrench during the rotary sealing process. The protruding blocks of the cover plate are arranged in a circular array on the outer surface of the cover plate, and gaps are provided between the protruding blocks of the cover plate.

[0024] Step three: fix the cover plate by screw thread through the screw thread hole provided on the protruding block of the cover plate. In step three, the screw thread hole provided on the protruding block of the cover plate is matched with the bolt and fixed to the lower surface of the furnace mouth.

[0025] Step 4: After the molten iron is smelted, the molten iron is poured into the molten iron smelting furnace. In step 4, the molten iron is poured into the molten iron smelting furnace after smelting. The molten iron temperature is set at 1600° C.-1800° C. In step 4, the pressure of the molten iron in the smelting furnace is set at 2400-6400 Pa;

[0026] Step 5: The furnace mouth is sealed to separate the molten iron that splashes out when the molten iron is poured into the smelting furnace from the furnace mouth. In step 5, when pouring the molten iron into the smelting furnace, first introduce it into the molten iron ladle for pre-cooling. During the inversion process, pour the molten iron into the smelting furnace 20-30 cm away from the furnace mouth.

[0027] Step six: A guide groove is provided at the furnace mouth cover to discharge excess molten iron. In step six, the guide groove discharges excess molten iron and diverts the molten iron through the molten iron diversion channel. In step six, a silicon-chromium alloy lining is provided at the furnace mouth cover.

[0028] Step seven: when the molten iron furnace is subjected to a long-term impact on the furnace mouth cover, the furnace mouth cover is replaced to protect the furnace mouth.

[0029] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A molten iron smelting transfer protection process, characterized in that: The following steps are involved: Step 1: A furnace mouth cover is placed on the furnace mouth of the molten iron smelting furnace, and the inner ring of the furnace mouth cover is attached to the outer surface of the furnace mouth; Step 2: The smelting furnace is rotatably sealed by a cover plate protrusion provided on the outer edge of the furnace mouth cover; Step 3: The cover plate is screwed and fixed through a threaded hole provided on the protrusion of the cover plate; Step 4: After molten iron smelting, the molten iron is poured into the molten iron smelting furnace; Step 5: The furnace mouth cover separates the molten iron that flows out of the molten iron smelting furnace and splashes out when the molten iron is poured into the furnace mouth; Step 6: A diversion groove is provided at the furnace mouth cover to guide out excess molten iron; In the process of placing the furnace mouth cover on the furnace mouth in the step 1, the inner surface of the furnace mouth cover is first polished so that the furnace mouth cover and the furnace mouth form an interference fit, wherein the lower surface of the furnace mouth cover is in contact with the outer surface of the furnace mouth; in the process of rotating the sealing plate in the step 2, the protruding blocks of the cover plate are connected to the rotary wrench, and the protruding blocks of the cover plate are arranged in an annular array on the outer surface of the cover plate, and gaps are provided between the protruding blocks of the cover plate; In the step three, the cover plate protruding block is provided with threaded holes which are bolted together with bolts and fixed to the lower surface of the furnace mouth; in the step four, after the molten iron is smelted, the molten iron is poured into the molten iron smelting furnace, and the molten iron temperature is set at 1600℃-1800℃.

2. The molten iron smelting and transfer protection process according to claim 1, characterized in that: In the step 5, when pouring the molten iron into the smelting furnace, the molten iron is first introduced into the molten iron ladle for pre-cooling, and during the inversion process, the molten iron is poured into the smelting furnace at a distance of 20-30 cm from the furnace mouth.

3. The molten iron smelting and transfer protection process according to claim 1, characterized in that: In the process of the guide trough guiding the excess molten iron in step six, the molten iron is diverted out through the molten iron diversion channel.

4. The molten iron smelting and transfer protection process according to claim 1, characterized in that: The method further includes step seven, wherein the furnace mouth cover is replaced to protect the furnace mouth when the molten iron furnace is subjected to a long-term impact on the furnace mouth cover.

5. The molten iron smelting and transfer protection process according to claim 1, characterized in that: In step six, a silicon-chromium alloy lining is provided at the furnace mouth cover.

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