CN114543529A - Material distribution method of sintering machine - Google Patents
Material distribution method of sintering machine Download PDFInfo
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- CN114543529A CN114543529A CN202210228009.2A CN202210228009A CN114543529A CN 114543529 A CN114543529 A CN 114543529A CN 202210228009 A CN202210228009 A CN 202210228009A CN 114543529 A CN114543529 A CN 114543529A
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- 238000005245 sintering Methods 0.000 title claims abstract description 87
- 239000000463 material Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000009826 distribution Methods 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 claims abstract description 58
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 230000008569 process Effects 0.000 abstract description 14
- 230000006872 improvement Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005204 segregation Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The application provides a material distribution method of a sintering machine, which is characterized in that the moisture content of a mixture is controlled through the limonite content of the mixture and the production load of the sintering machine, and the ore blending process and the production control of sintered ores are optimized; the sintering machine stops laying the bed charge, and directly lays the mixture on the grate bar of the trolley; a reflecting plate is arranged below the multi-roller distributing device to form a roller-plate combined distributing device, the inclination angle of the reflecting plate, the inclination angle and the rotating speed of the multi-roller distributing device can be adjusted, and specific adaptive strain adjustment can be performed according to changes of production actual conditions such as production load of a sintering machine and the like; the material distribution method provides favorable technical support for high-quality production of the sintering machine, improvement of main indexes and reduction of production cost, and generates great economic and social benefits.
Description
Technical Field
The invention relates to the technical field of ironmaking sintering machines, in particular to a material distribution method of a sintering machine.
Background
The distribution state of the sintering material on the sintering trolley has great influence on the sintering process and the quality of a sintered product, the granularity and the carbon content of the mixture are reasonably distributed along the height direction of a material layer according to the requirement of a sintering process, the granularity of the mixture is gradually thickened from top to bottom, and the carbon content is high and low, namely segregation type material distribution. At present, the following distributing devices are available for sintering machines: belt distributors, baffle distributors, multi-roll distributors, etc.
The material distribution system of the sintering machine is an important ring in the sintering production process, the conventional bedding material production process is adopted in the existing sintering machine, finished ore with the granularity of 8-12 mm is used as the bedding material, and the finished ore is obtained by screening through a secondary bar screen in the finished product screening system, and the sintering machine has the following outstanding problems when the bedding material is used: (1) the material distributor is in inching control, and the material quantity cannot be accurately controlled in actual operation; meanwhile, the upper part of the bottom laying bin has influence on the estimation of the material level due to serious dust raising, so that the phenomenon of bin overflow of the bottom laying bin is often caused, and manual cleaning is needed; (2) the thickness of the bedding materials on the sintering machine is controlled to be about 30mm, the lower edge of a bottom steel plate of the bedding material bin is only 30mm away from a trolley grate, the bottom steel plate is easy to collide with the overburnt sintering ore on the surface of the trolley, and the bedding materials are continuously scoured and worn during falling, so that the bottom steel plate is easy to deform or even break, if the deformation and the breakage of the bottom steel plate are in the vertical direction, the blanking amount of the bedding materials is increased, the thickness of the bedding materials is increased, the end point temperature of the sintering process is greatly fluctuated, and the yield is excessive; if the deformation and the fracture of the bottom steel plate occur in the horizontal direction, the bottom material of the paving trolley is unevenly distributed at the bottom of the paving trolley, the uniformity of the sintering process in the vertical direction is seriously affected, and the improvement of the strength and the ore forming rate of the sintering ore is not facilitated.
Disclosure of Invention
The invention aims to provide a material distribution method of a sintering machine.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a material distribution method of a sintering machine is characterized in that when the content of limonite in a mixture is more than 0 and less than or equal to 10%, the content of water in the mixture is controlled to be 7.40% -7.60%;
when the limonite content in the mixture is more than 10% and less than or equal to 20%, controlling the water content in the mixture to be 7.50% -7.70%;
when the limonite content in the mixture is more than 20% and less than or equal to 30%, controlling the water content in the mixture to be 7.60% -7.80%;
when the limonite content in the mixture is more than 30% and less than or equal to 40%, the water content in the mixture is controlled to be 7.65% -7.85%.
Preferably, when the production load of the sintering machine is more than 60% and less than or equal to 70%, the moisture content in the mixture is controlled to be 7.40% -7.60%;
when the production load of the sintering machine is more than 70% and less than or equal to 80%, controlling the moisture content in the mixture to be 7.50% -7.70%;
when the production load of the sintering machine is more than 80% and less than or equal to 90%, controlling the moisture content in the mixture to be 7.60% -7.80%;
when the production load of the sintering machine is more than 90% and less than or equal to 100%, the moisture content in the mixture is controlled to be 7.65% -7.85%.
Preferably, the sintering machine stops laying the bottom material, and the mixture is directly laid on the grate bars of the trolley.
Preferably, a reflecting plate for distributing is arranged below the multi-roller distributor to form the roller-plate combined distributor.
Preferably, the multi-roller distributor is an eight-roller distributor, and the length of the reflecting plate is 340 mm.
Preferably, when the production load of the sintering machine is more than 60% and less than or equal to 70%, the inclination angle of the multi-roller distributor is controlled to be 45 degrees, the rotating speed of the multi-roller distributor is 35.3r/min, and the inclination angle of the reflecting plate is controlled to be 38 degrees;
when the production load of the sintering machine is more than 70% and less than or equal to 80%, controlling the inclination angle of the multi-roller distributor to be 43.5 degrees, controlling the rotating speed of the multi-roller distributor to be 37r/min, and controlling the inclination angle of the reflecting plate to be 40.6 degrees;
when the production load of the sintering machine is more than 80% and less than or equal to 90%, controlling the inclination angle of the multi-roller distributor to be 42.7 degrees, controlling the rotating speed of the multi-roller distributor to be 38.8r/min, and controlling the inclination angle of the reflecting plate to be 42.5 degrees;
when the production load of the sintering machine is more than 90% and less than or equal to 100%, the inclination angle of the multi-roller distributing device is controlled to be 40.5 degrees, the rotating speed of the multi-roller distributing device is 40r/min, and the inclination angle of the reflecting plate is controlled to be 45 degrees.
The application provides a material distribution method of a sintering machine, which controls the water content in a mixture through the limonite content in the mixture and the production load of the sintering machine, and optimizes the ore blending process and production control of sintered ores; the sintering machine stops using the bottom material, and the mixture is directly paved on the grate bars of the trolley; a reflecting plate is arranged below the multi-roller distributing device to form a roller-plate combined distributing device, the inclination angle of the reflecting plate, the inclination angle and the rotating speed of the multi-roller distributing device can be adjusted, and specific adaptive strain adjustment can be performed according to changes of production actual conditions such as production load of a sintering machine and the like; the material distribution method provides favorable technical support for high-quality production of the sintering machine, improvement of main indexes and reduction of production cost, and generates great economic and social benefits.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The application provides a material distribution method of a sintering machine, when the content of limonite in a mixture is more than 0 and less than or equal to 10 percent, the content of water in the mixture is controlled to be 7.40 to 7.60 percent;
when the limonite content in the mixture is more than 10% and less than or equal to 20%, controlling the water content in the mixture to be 7.50% -7.70%;
when the limonite content in the mixture is more than 20% and less than or equal to 30%, controlling the water content in the mixture to be 7.60% -7.80%;
when the limonite content in the mixture is more than 30% and less than or equal to 40%, the water content in the mixture is controlled to be 7.65% -7.85%.
In one embodiment of the application, when the production load of the sintering machine is more than 60% and less than or equal to 70%, the moisture content in the mixture is controlled to be 7.40% -7.60%;
when the production load of the sintering machine is more than 70% and less than or equal to 80%, controlling the moisture content in the mixture to be 7.50% -7.70%;
when the production load of the sintering machine is more than 80% and less than or equal to 90%, controlling the moisture content in the mixture to be 7.60% -7.80%;
when the production load of the sintering machine is more than 90% and less than or equal to 100%, the moisture content in the mixture is controlled to be 7.65% -7.85%.
In one embodiment of the present application, the sintering machine deactivates the bed charge and lays the mix directly on the grate bars of the pallet.
In one embodiment of the application, a reflecting plate for distributing is arranged below the multi-roller distributor to form a roller-plate combined distributor.
In one embodiment of the present application, the multi-roller distributor is an eight-roller distributor, and the length of the reflecting plate is 340 mm.
In one embodiment of the application, when the production load of the sintering machine is more than 60% and less than or equal to 70%, the inclination angle of the multi-roller distributor is controlled to be 45 degrees, the rotating speed of the multi-roller distributor is 35.3r/min, and the inclination angle of the reflecting plate is controlled to be 38 degrees;
when the production load of the sintering machine is more than 70% and less than or equal to 80%, controlling the inclination angle of the multi-roller distributor to be 43.5 degrees, controlling the rotating speed of the multi-roller distributor to be 37r/min, and controlling the inclination angle of the reflecting plate to be 40.6 degrees;
when the production load of the sintering machine is more than 80% and less than or equal to 90%, controlling the inclination angle of the multi-roller distributor to be 42.7 degrees, controlling the rotating speed of the multi-roller distributor to be 38.8r/min, and controlling the inclination angle of the reflecting plate to be 42.5 degrees;
when the production load of the sintering machine is more than 90% and less than or equal to 100%, the inclination angle of the multi-roller distributing device is controlled to be 40.5 degrees, the rotating speed of the multi-roller distributing device is 40r/min, and the inclination angle of the reflecting plate is controlled to be 45 degrees.
In the application, 1) the ore blending process and production control of the sinter are optimized, the appropriate moisture content of the mixture is selected, and the appropriate moisture content control value of the mixture is determined according to the variety characteristics (including hydrophilicity, density and granularity) of the ore powder and the control requirements (including production load, flue gas temperature and the like) of the production process, so that stable process technical support is provided for the material distribution operation on a sintering machine;
2) the method is characterized in that the method is combined with actual production, and optimizes the sintering machine bottom-laying material and the on-machine material distribution process according to local conditions, so that the material distribution process of the sintering machine has the capability of being flexibly adjusted along with the change of production conditions; secondly, a reflecting plate is additionally arranged on the existing multi-roller distributing device, the roller plate combined distributing device is used for replacing a round roller and an eight-roller distributing device which are relatively single in structure originally, the condition that the reflecting plate is not installed cannot be met due to insufficient free space above the eight-roller distributing device caused by design reasons, and the reflecting plate is installed under the eight-roller distributing device under the selection on the premise that the thickness of sintered cloth is not influenced because the lower edge of the last roller of the eight-roller distributing device is 30cm away from the upper edge of a trolley breast board;
3) reflector design: the length of the reflecting plate is preferably 340mm, the width of the reflecting plate is preferably 3050mm, and in order to realize the adjustment of the inclination angle of the reflecting plate, the reflecting plate is arranged on a left rotating shaft and a right rotating shaft, and the reflecting plate is driven to rotate through the rotation of the rotating shafts, so that the inclination angle of the reflecting plate is increased or decreased;
4) carrying out an industrial application test on site, testing the application condition of the roll plate combined distributor to determine the optimal operation parameters of the new process, carrying out particle size classification and carbon content detection on the mixture in the test, analyzing the influence of the new distribution process on the segregation effect of the mixture according to the index conditions of the particle size and the carbon content of the mixture corresponding to different sintered material layer thicknesses, and determining the reasonable control parameters of the eight-roll distributor and the reflecting plate in the actual operation; according to the principle that the beneficial segregation maximization is generated on the mixture by a new material distribution process, the angle and the rotating speed of the multi-roller material distributor and the material distribution angle of the reflecting plate are solidified and applied:
5) because the material distribution angle of the reflecting plate and the angle and the rotating speed of the eight-roller material distributor are adjustable, the new material distribution process can carry out specific strain adjustment according to the condition change conditions such as the production load of the sintering machine; under the condition of full-load production of the sintering machine, the inclination angle of the multi-roller distributor is controlled to be 40.5 degrees, the rotating speed of the multi-roller distributor is 40r/min, the inclination angle of the reflecting plate is controlled to be 45 degrees, and the mixture can obtain the optimal distribution segregation effect.
In the present application, all the contents are mass percentages, for example, when the limonite content in the mixed material is more than 0 and less than or equal to 10 wt%, the moisture content in the mixed material is controlled to be 7.40 wt% to 7.60 wt%.
Methods and devices not described in detail in the present invention are all the prior art and are not described in detail.
In order to further understand the present invention, the following detailed description is made on a material distribution method of a sintering machine according to the present invention with reference to the following examples, and the scope of the present invention is not limited by the following examples.
Example 1
Embodiment 1 provides a material distribution method for a sintering machine, wherein when the content of limonite in a mixture is more than 0 and less than or equal to 10%, the content of water in the mixture is controlled to be 7.45% -7.55%;
when the limonite content in the mixture is more than 10% and less than or equal to 20%, controlling the water content in the mixture to be 7.55% -7.65%;
when the limonite content in the mixture is more than 20% and less than or equal to 30%, controlling the water content in the mixture to be 7.65% -7.75%;
when the limonite content in the mixture is more than 30% and less than or equal to 40%, the water content in the mixture is controlled to be 7.70% -7.80%.
Example 2
Embodiment 2 provides a material distribution method for a sintering machine, when the limonite content in the mixture is greater than 0 and less than or equal to 10%, and when the production load of the sintering machine is greater than 60% and less than or equal to 70%, the moisture content in the mixture is controlled to be 7.45% -7.55%;
when the limonite content in the mixture is more than 10% and less than or equal to 20%, and when the production load of a sintering machine is more than 70% and less than or equal to 80%, the water content in the mixture is controlled to be 7.55% -7.65%;
when the limonite content in the mixture is more than 20% and less than or equal to 30%, and when the production load of the sintering machine is more than 80% and less than or equal to 90%, the water content in the mixture is controlled to be 7.65% -7.75%;
when the limonite content in the mixture is more than 30% and less than or equal to 40%, and when the production load of the sintering machine is more than 90% and less than or equal to 100%, the water content in the mixture is controlled to be 7.70% -7.80%;
the sintering machine stops using the bottom material, and the mixture is directly paved on the grate bars of the trolley.
Example 3
Embodiment 3 provides a material distribution method for a sintering machine, wherein when the limonite content in the mixture is greater than 0 and less than or equal to 10%, and when the production load of the sintering machine is greater than 60% and less than or equal to 70%, the moisture content in the mixture is controlled to be 7.45% -7.55%;
when the limonite content in the mixture is more than 10% and less than or equal to 20%, and when the production load of a sintering machine is more than 70% and less than or equal to 80%, the water content in the mixture is controlled to be 7.55% -7.65%;
when the limonite content in the mixture is more than 20% and less than or equal to 30%, and when the production load of the sintering machine is more than 80% and less than or equal to 90%, the water content in the mixture is controlled to be 7.65% -7.75%;
when the limonite content in the mixture is more than 30% and less than or equal to 40%, and when the production load of a sintering machine is more than 90% and less than or equal to 100%, controlling the water content in the mixture to be 7.70% -7.80%;
the sintering machine stops using the bottom material, and the mixture is directly paved on the grate bars of the trolley;
a reflecting plate for distributing is arranged below the multi-roller distributing device to form a roller-plate combined distributing device;
the multi-roller distributor is an eight-roller distributor, and the length of the reflecting plate is 340 mm;
when the production load of the sintering machine is more than 60% and less than or equal to 70%, controlling the inclination angle of the multi-roller distributor to be 45 degrees, controlling the rotation speed of the multi-roller distributor to be 35.3r/min, and controlling the inclination angle of the reflecting plate to be 38 degrees;
when the production load of the sintering machine is more than 70% and less than or equal to 80%, controlling the inclination angle of the multi-roller distributor to be 43.5 degrees, controlling the rotation speed of the multi-roller distributor to be 37r/min, and controlling the inclination angle of the reflecting plate to be 40.6 degrees;
when the production load of the sintering machine is more than 80% and less than or equal to 90%, controlling the inclination angle of the multi-roller distributor to be 42.7 degrees, controlling the rotation speed of the multi-roller distributor to be 38.8r/min, and controlling the inclination angle of the reflecting plate to be 42.5 degrees;
when the production load of the sintering machine is more than 90% and less than or equal to 100%, controlling the inclination angle of the multi-roller distributor to be 40.5 degrees, controlling the rotation speed of the multi-roller distributor to be 40r/min, and controlling the inclination angle of the reflecting plate to be 45 degrees;
under the condition of full-load production of the sintering machine, the inclination angle of the multi-roller distributor is controlled to be 40.5 degrees, the rotating speed of the multi-roller distributor is 40r/min, the inclination angle of the reflecting plate is controlled to be 45 degrees, and the mixture can obtain the optimal distribution segregation effect.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A material distribution method of a sintering machine is characterized in that when the content of limonite in a mixture is more than 0 and less than or equal to 10 percent, the content of water in the mixture is controlled to be 7.40 to 7.60 percent;
when the limonite content in the mixture is more than 10% and less than or equal to 20%, controlling the water content in the mixture to be 7.50% -7.70%;
when the limonite content in the mixture is more than 20% and less than or equal to 30%, controlling the water content in the mixture to be 7.60% -7.80%;
when the limonite content in the mixture is more than 30% and less than or equal to 40%, the water content in the mixture is controlled to be 7.65% -7.85%.
2. The method for distributing the sintering machine according to claim 1, wherein when the production load of the sintering machine is more than 60% and less than or equal to 70%, the moisture content in the mixture is controlled to be 7.40% -7.60%;
when the production load of the sintering machine is more than 70% and less than or equal to 80%, controlling the moisture content in the mixture to be 7.50% -7.70%;
when the production load of the sintering machine is more than 80% and less than or equal to 90%, controlling the moisture content in the mixture to be 7.60% -7.80%;
when the production load of the sintering machine is more than 90% and less than or equal to 100%, the moisture content in the mixture is controlled to be 7.65% -7.85%.
3. The method for distributing the sintering machine as claimed in claim 1, wherein the sintering machine stops the bottom material laying and the mixture is directly laid on the grate bars of the trolley.
4. The method of distributing a sintering machine according to claim 1, wherein a roller-plate combination distributor is formed by installing a reflection plate for distribution below the multi-roller distributor.
5. The method of claim 4, wherein the multi-roller distributor is an eight-roller distributor, and the length of the reflection plate is 340 mm.
6. The method for distributing materials for a sintering machine according to claim 5, wherein when the production load of the sintering machine is more than 60% and not more than 70%, the inclination angle of the multi-roller distributor is controlled to be 45 °, the rotation speed of the multi-roller distributor is 35.3r/min, and the inclination angle of the reflecting plate is controlled to be 38 °;
when the production load of the sintering machine is more than 70% and less than or equal to 80%, controlling the inclination angle of the multi-roller distributor to be 43.5 degrees, controlling the rotating speed of the multi-roller distributor to be 37r/min, and controlling the inclination angle of the reflecting plate to be 40.6 degrees;
when the production load of the sintering machine is more than 80% and less than or equal to 90%, controlling the inclination angle of the multi-roller distributor to be 42.7 degrees, controlling the rotating speed of the multi-roller distributor to be 38.8r/min, and controlling the inclination angle of the reflecting plate to be 42.5 degrees;
when the production load of the sintering machine is more than 90% and less than or equal to 100%, the inclination angle of the multi-roller distributing device is controlled to be 40.5 degrees, the rotating speed of the multi-roller distributing device is 40r/min, and the inclination angle of the reflecting plate is controlled to be 45 degrees.
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| CN202210228009.2A CN114543529A (en) | 2022-03-08 | 2022-03-08 | Material distribution method of sintering machine |
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