15results about "Internal forms" patented technology

The invention relates to a blast furnace bottom flat steel rapid leveling construction method, which comprises the following steps that a plurality of support units are welded on a furnace bottom plate, each support unit comprises a plurality of support angle steels, and the plurality of support angle steels are arranged in a positive and negative staggered manner; the multiple flat steel meshes are installed on the multiple supporting units respectively, each flat steel mesh comprises multiple pieces of flat steel, the multiple pieces of flat steel are sequentially installed on the supporting units, and the length of each piece of flat steel and the distance between every two adjacent supporting angle steel in each supporting unit keep the corresponding modulus; the length of the flat steel and the distance between every two adjacent pieces of supporting angle steel in each supporting unit are set to keep the corresponding modulus, it is ensured that the flat steel connector always falls in the center line area of the supporting angle steel, the area is high in supporting rigidity and uniform in stress, welding misalignment is avoided from the structure root, meanwhile, the vibration resistance of the connector after welding is greatly improved, and the product quality is improved. And the ramming desoldering problem is thoroughly solved.

The present application relates to iron-making technology field, propose a kind of for vanadium-titanium magnetite smelting blast furnace hearth structure and cooling control method, the blast furnace structure includes furnace bottom brick lining, hearth side wall brick lining and be located in the hearth side wall brick lining below furnace base;Furnace bottom brick lining and the outside of the hearth side wall brick lining is provided with smooth cast iron cooling wall, the inside of the furnace base is provided with cooling device;The furnace bottom brick lining is successively provided with heat preservation brick layer and heat-conducting brick layer from hearth bottom to furnace base direction, heat preservation brick layer includes dense clay brick and composite mullite brick, the heat-conducting brick layer is semi-graphite carbon brick;Hearth side wall brick lining is built with the composite mullite brick, and in the corner of hearth and furnace bottom, hearth side wall brick lining extends to form brick lining reinforcing structure in the direction of furnace in.The present application solves the problem of excessive deposition of titanium carbonitride caused by improper temperature gradient when smelting vanadium-titanium magnetite, inhibits the accumulation of hearth center and edge bonding, maintains the hearth active and blast furnace smooth.

The present invention discloses a blast furnace, comprising a hearth, a belly, a waist and a furnace body. A furnace cover is provided on the top of the furnace body, and a first feeding port, a first feeding channel and a second feeding channel are respectively provided on the furnace cover. A slot is provided on the mouth wall of the first feeding port, and a feeding joint is embedded in the slot. A feeding elbow is provided at the lower end of the feeding joint, and the feeding elbow is connected to the discharge hopper. A butt joint is connected to the upper end of the feeding joint, and the butt joint is connected to the feeding hopper. A rotating motor is also provided on the furnace cover, and a rotating shaft of the rotating motor is connected to a gear. A gear ring is provided on the outer wall of the feeding joint, and the gear teeth and the gear ring are meshed with each other. The gear is used to drive the feeding joint to rotate, and at this time, the feeding hopper on the feeding elbow will make a circular motion, so that the iron ore is evenly distributed in the furnace body. While the iron ore is being fed, coke and limestone are regularly added from the first feeding channel and the second feeding channel to ensure that the three raw materials are evenly mixed, which can effectively accelerate the reaction efficiency, shorten the smelting cycle, and effectively improve the production efficiency.

The utility model provides a leak-proof blast furnace top structure and blast furnace equipment, the leak-proof blast furnace top structure comprises: a furnace top steel ring having a first water cooling structure, the top of the furnace top steel ring having an annular groove, the bottom of the annular groove having a plurality of first water holes communicated with the first water cooling structure; the distributing device is provided with a second water cooling structure, the bottom of the distributing device is connected with the top of the furnace top steel ring, and second water holes corresponding to the first water holes and distributed in the circumference are formed in the bottom of the distributing device; a first sealing ring and a second sealing ring are arranged between the furnace top steel ring and the distributing device, and the annular groove is located between the first sealing ring and the second sealing ring. The blast furnace top structure capable of preventing water leakage can reduce the risk of water leakage.

The present application relates to a kind of blast furnace hearth hearth structure, belong to metallurgical industry field.The hearth structure is composed of hearth bottom (4) and hearth side wall (3), the inboard of hearth structure is provided with elephant foot gasket (5), the outside of hearth structure is provided with cooling wall (2) and furnace shell (1), the outside of furnace shell (1) is arranged with several reinforcing rib plates (7) in one circle interval, and the effect of strengthening support is formed to hearth structure.The present application is by the outer wall of hearth structure being set as circular arc, and make cooling wall (2) and furnace shell (1) present concentric circular arc, so that the cooling intensity of cooling wall (2) to hearth structure is greater, more uniform, beneficial to the solidification line (9) of molten iron to hearth structure inside direction shift, form circular arc shape in hearth structure inside and iron layer, effectively weaken or prevent the formation of elephant foot shape erosion, prolong the life of hearth.

The embodiments of this specification provide a method, device, storage medium, and computing device for evaluating the furnace type state. The method includes: based on the historical slag skin thickness profile reference data, determining the target historical slag skin thickness profile reference data and the target reference mapping degree value corresponding to the blast furnace section angle slag skin value according to the blast furnace section angle slag skin value; generating an average reference mapping degree based on the target reference mapping degree value; determining the blast furnace section angle furnace type grade according to the corresponding relationship between the target historical slag skin thickness profile reference data and the furnace type grade when the average reference mapping degree is within the mapping standard threshold range; generating a full-angle operating furnace type activity index based on the blast furnace section angle furnace type grade; generating a full-angle furnace type state based on the full-angle operating furnace type activity index; and generating an evaluation result of the operating furnace type state based on the full-angle furnace type state and the blast furnace section angle furnace type grade, so as to evaluate the result accurately, conform to the actual situation, and have strong adaptability based on the actual blast furnace data.

The utility model relates to the technical field of blast furnace shell construction, and discloses an auxiliary device for blast furnace shell internal structure construction, which comprises a construction platform arranged in a blast furnace shell, and a plurality of chain blocks connected with the top of the blast furnace shell are arranged on the periphery of the construction platform; the climbing derrick is fixedly arranged in the blast furnace shell along the vertical direction and comprises a cylindrical bracket and a ladder stand in the bracket; one end of the horizontal channel is connected to the climbing derrick, and the other end of the horizontal channel is connected to an iron notch of a blast furnace shell. By means of the auxiliary device for construction of the internal structure of the blast furnace shell, constructors can safely and rapidly enter and exit from the blast furnace shell, and the construction efficiency of the internal structure of the blast furnace shell is improved.

The embodiment of the invention provides a furnace profile state evaluation method and device, a storage medium and computing equipment, and the method comprises the steps that based on historical slag skin thickness contour reference data, according to a blast furnace section angle slag skin value, target historical slag skin thickness contour reference data and a target reference mapping degree value corresponding to the blast furnace section angle slag skin value are determined; generating a reference mapping degree mean value based on the target reference mapping degree value; based on the fact that the reference mapping degree mean value is within the mapping standard threshold value range, the blast furnace section angle furnace profile grade is determined according to the corresponding relation between the target historical slag skin thickness contour reference data and the furnace profile grade; generating an all-angle operation furnace profile activity index based on the blast furnace section angle furnace profile grade; generating a full-angle furnace profile state based on the full-angle operation furnace profile activity index; and an operation furnace profile state evaluation result is generated based on the full-angle furnace profile state and the blast furnace section angle furnace profile grade, so that on the basis of actual blast furnace data, the evaluation result is accurate and is close to reality, and the self-adaptive capacity is high.

A stave protection system for a metallurgical furnace comprises: a stave (100) comprising a plurality of recesses (110) arranged on a front face (102) of the stave (100); and a plurality of inserts (200) each being received by a respective one of the recesses (110), the inserts (200) so received projecting from the front face (102) of the stave (100) such that, in use, furnace burden material is trapped by the inserts (200) so as to provide a protective layer of the burden material on the front face (102) of the stave (100). Each insert (200) comprises a set of segments (202a-f) and a retainer which forces the segments (202a-f) against a surface (110b) of the respective recess (110), such that the segments (202a-f) are secured in the recess (110) by frictional contact with the surface (110b) of the recess (110).

The utility model belongs to the technical field of blast furnace ironmaking, and particularly relates to a blast furnace profile. The long-life blast furnace profile is composed of a cylinder and a circular truncated cone and comprises a furnace throat, a furnace body, a bosh and a hearth, and the bosh blast furnace is 50% of a conventional blast furnace; the included angle between the side wall of the furnace throat and the horizontal line is 85-90 degrees; the included angle between the side wall of the furnace body and the horizontal line is 81-84 degrees; the included angle between the side wall of the bosh and the horizontal line is 74-80 degrees. Compared with the prior art, the utility model has the advantages that: 1, a furnace bosh straight tube section is removed, the height of the furnace body is increased, and the diameter of the furnace body is gradually increased from top to bottom, so that furnace charge can be well absorbed to be heated and expanded; the height of the bosh is reduced, the bosh is located below a soft melting zone and located in a wet zone, stable slag crust can be hung on the hot face of the cooling wall easily, and the service life of the cooling wall can be longer than 15 years;

The invention discloses a blast furnace inner wall wear-resistant coating and a preparation method thereof, and belongs to the technical field of metallurgical equipment protection. The coating is composed of nickel powder, chromium powder, molybdenum powder, niobium powder, boron powder, silicon powder, tungsten carbide powder, two innovative reinforcement phases, core-shell structure tungsten carbide boron nitride nanocapsules, yttrium-chromium-aluminum-nitrogen-oxygen high-entropy nanocrystals and yttrium oxide. The preparation process comprises the following steps: firstly, carrying out sand blasting and cleaning pretreatment on the inner wall of a blast furnace, then uniformly mixing and drying the powder mixture, cladding the powder mixture on the surface of the inner wall under the condition of controlling the temperature of a matrix by adopting a laser cladding technology, and finally, carrying out annealing treatment to obtain the compact coating. According to the method, two uniquely designed compounds are introduced, so that the wear resistance and thermal shock resistance of the coating at high temperature and the bonding strength of the coating and a matrix are remarkably improved, the service life of the inner wall of the blast furnace under harsh working conditions is effectively prolonged, and the key problem that the coating is easy to wear and peel off in the prior art is solved.

The utility model discloses a blast furnace structure for preventing a blast furnace bottom plate from upwarping. The blast furnace structure comprises a furnace bottom sealing plate and a hearth furnace shell, the furnace bottom sealing plate is located at the bottom of the furnace cylinder furnace shell, the furnace cylinder furnace shell is in a straight cylinder shape, and the furnace bottom sealing plate is in arc connection with the furnace cylinder furnace shell; a furnace bottom refractory material is arranged above the furnace bottom sealing plate; the furnace bottom refractory material comprises furnace bottom carbon bricks and two layers of furnace bottom semi-heat-conducting castable poured on the furnace bottom carbon bricks; a side wall refractory material is arranged on the inner side of the hearth shell and above the furnace bottom refractory material; the side wall refractory material comprises a side wall carbon brick, a side wall semi-heat-conducting castable positioned on the inner side of the side wall carbon brick and a high-heat-conducting castable positioned on the outer side of the side wall carbon brick; a side wall ring carbon and a middle sleeve are arranged above the hearth and the furnace shell, buffer layers are laid on the upper surface of the side wall ring carbon and the lower half circle of the middle sleeve, and the problem that the bottom plate of the blast furnace warps upwards can be effectively solved.

The invention relates to a stave (2) for a vertical blast furnace comprising: an inner face (6) configured for contacting an inner surface of the blast furnace wall; and an outer face (8) intended to come into contact with burden inside the blast furnace; wherein the stave comprising a plurality of cavities (4) of a shape that is elongated along a vertical direction (Y) of the blast furnace, corresponding to a direction of burden flow, said cavities being arranged to form ribs (10) extending on the outer face substantially along the vertical direction.

A blast furnace for ironmaking production wherein iron ore is at least partly reduced by a reducing gas which is injected in the stack of the blast furnace. The blast furnace comprises an external wall, an internal wall in contact with matters charged into the blast furnace, said internal wall comprising several rows of staves having a parallelepipedal shape. At least one row of staves comprises staves with a hole drilled in a least one of the corners of the parallelepipedal stave wherein an injection device may be partly inserted in.

To provide a blast furnace which has productivity equal to or higher than that of a conventional blast furnace, and has reduced influence on the environment.SOLUTION: A blast furnace (1) for iron ore production, wherein iron ore is at least partially reduced by reducing gas blown in a stack of the blast furnace in a blowing zone, wherein the blast furnace (1) comprises an outer wall (2) and an inner wall in contact with material charged into the blast furnace, wherein in the blowing zone the inner wall comprises a local inward widening (6), and wherein reducing gas blowing is performed below the inward widening.SELECTED DRAWING: Figure 3