CN111442951A - Method for layered material taking of mixture of sintering machine and layered sampling device - Google Patents
Method for layered material taking of mixture of sintering machine and layered sampling device Download PDFInfo
- Publication number
- CN111442951A CN111442951A CN202010301163.9A CN202010301163A CN111442951A CN 111442951 A CN111442951 A CN 111442951A CN 202010301163 A CN202010301163 A CN 202010301163A CN 111442951 A CN111442951 A CN 111442951A
- Authority
- CN
- China
- Prior art keywords
- sintering machine
- layered
- mixture
- sampling device
- trolley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1006—Dispersed solids
Abstract
A method for layered material taking of a mixture of a sintering machine and a layered sampling device belong to the technical field of sintering machines, wherein the layered material taking method is characterized in that a fire nozzle of an ignition furnace is closed during normal material distribution, and the mixture of 2-3 trolleys is ensured not to be ignited; placing a layered sampling device after the non-ignition trolley is out of the heat preservation cover; pressing the layered sampling device into the bottom of the mixture layer; stopping and hoisting the trolley for placing the layered material taking device, and replacing an empty trolley to perform machine-turning sintering production; layered sampling, and detecting and analyzing the granularity, the carbon content and the chemical components; the layered sampling device is formed by overlapping and sleeving the base cylinder and the plurality of sleeves, and has the advantages of simple integral structure and low manufacturing cost, and the sampling method using the sampling device has small influence on the sintering production process, has few times of shutdown of the sintering machine, has small influence on the original distribution state of the mixture, more truly reflects the original distribution state of the mixture of the sintering machine, and improves the reliability of the layered sampling detection result.
Description
Technical Field
The invention relates to the technical field of sintering machines, in particular to a method for taking materials from a mixture of a sintering machine in a layering manner and a layering sampling device.
Background
With the large-scale of the sintering system and the development of the ultra-thick material layer sintering technology, the granulation capacity of the sintering system and the reasonable segregation level of the material distribution equipment directly determine the cold and hot air permeability of the mixture on the sintering trolley, and further directly influence the yield and the quality of the sintering ore. The most ideal material distributing method is to make the mixture become coarse in granularity from top to bottom along the height of the material layer and reduce the carbon content, thus being beneficial to increasing the air permeability of the material layer and improving the quality of the sinter. Therefore, the research on the distribution strength, moisture, chemical composition, carbon segregation and the like of the mixture on the sintering pallet has important practical significance for guiding the optimization of the sintering production process and improving the sintering production capacity.
The existing mixture sampling method is characterized in that a sampling device is placed after a sintering machine needs to be stopped before sampling, then material distribution operation is carried out, the sampling device is taken out after the sintering machine needs to be stopped again after the material distribution is finished, and then layered sampling operation is carried out.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for taking materials from a mixture of a sintering machine in a layering manner and a layering sampling device, wherein the layering sampling device is simple in integral structure and low in manufacturing cost, the sampling method using the sampling device has small influence on the sintering production process, the shutdown frequency of the sintering machine is low, the influence on the original distribution state of the mixture is small, the original distribution state of the mixture of the sintering machine is reflected more truly, and the reliability of the layering sampling detection result is improved.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the layered material taking method for the mixture of the sintering machine comprises the following steps:
1) normally distributing materials on the sintering machine trolley, closing a nozzle of an ignition furnace for a period of time after distributing the materials, and ensuring that the mixture of 2-3 sections of sintering machine trolleys is not ignited;
2) after the sintering machine trolley which is not ignited goes out of the heat preservation cover, flatly placing a plurality of layered sampling devices at different positions of the charge level;
3) a weight with a flat bottom surface is hung by a travelling crane and placed on the layered sampling device, after the travelling crane unloads force, the layered sampling device is pressed into the bottom of the mixed material layer by the weight, and the travelling crane hangs the weight;
4) turning the sintering machine trolley which is not ignited and is provided with the layered sampling device to a position for replacing the sintering machine trolley, stopping the sintering machine, and hoisting out the whole sintering machine trolley;
5) cleaning scattered blanking materials on the sintering machine, replacing an empty trolley of the sintering machine, and then turning the sintering machine to perform sintering production;
6) carrying out layered sampling on the mixture in the layered sampling device which is lifted out of the trolley;
7) and (3) detecting and analyzing the granularity, the carbon content and the chemical composition of the mixture taken out from each layer of the sintering machine trolley at different positions, and comparing the segregation effects of the material distribution in the horizontal direction and the vertical direction respectively.
Further, in the step 1), the time for closing the ignition nozzle of the ignition furnace after distributing is 2min to 3 min.
Further, in the step 2), the plurality of stratified sampling devices are uniformly distributed on the charge level of the central line of the non-ignited sintering machine trolley in the width direction.
Further, the heavy object in the step 3) is set to be a turnover box for conveying the grate bars, and the weight of the turnover box is 1 t-3 t.
The layered sampling device used in the method for layered material taking of the mixture of the sintering machine comprises a base cylinder and sleeves, wherein a plurality of sleeves are sequentially detachably sleeved above the base cylinder, and positioning sleeve lugs for preventing the sleeves from sliding up and down are arranged on the sleeves in a stacked mode.
Furthermore, the positioning sleeve lugs are of a strip-shaped steel plate structure, one end of the sleeve is welded with a plurality of positioning sleeve lugs along the circumferential direction, and the positioning sleeve lugs extend outwards by 40-80 mm along the length direction of the sleeve.
Further, the base cylinder and the sleeve are respectively formed by cutting a round steel pipe with the same length, the pipe diameter of the round steel pipe is 300-450 mm, the wall thickness of the round steel pipe is 3-5 mm, and the length of the base cylinder and the length of the sleeve are 200-400 mm.
Further, the lower part of the base barrel is provided with a conical insertion part, and the edge of the conical insertion part is in smooth transition.
Furthermore, the base barrel and the one end of the sleeve are both provided with an annular clamping groove, and the other end of the sleeve is provided with an annular bulge connected with the annular clamping groove in a clamped mode.
Further, the number of the sleeves is 2-5.
The invention has the beneficial effects that:
1. according to the layered sampling method, the sintering machine trolley is normally distributed, the mixture of 2-3 sections of the sintering machine trolley is not ignited only by closing the fire nozzle of the furnace after the distribution, and the layered sampling device is placed after the un-ignited sintering machine trolley comes out of the heat-insulating cover; the hoisting weight is placed on the layered sampling device and presses the layered sampling device into the bottom layer of the mixture, then the sintering machine trolley with the layered sampling device is hoisted out after the machine is stopped, sintering production is carried out when the empty sintering machine trolley is replaced, layered sampling is carried out in the hoisted layered sampling device, compared with the prior art, the sampling mode does not need to take out the sampling device integrally, the influence on the original distribution state of the mixture is small, the original distribution state of the mixture of the sintering machine is reflected more truly, and the reliability of the detection result of the layered sampling is improved.
2. The layered sampling device is formed by overlapping the base barrel and the sleeves, the positioning sleeve lugs arranged on the sleeves play a role in positioning, sleeving and sliding prevention, the number of the sleeves to be overlapped can be selected according to the material thickness of a mixture, the layered sampling device is simple in integral structure, can be formed by cutting a round steel pipe, is low in manufacturing cost and high in universality, and is convenient to take materials in a layered mode.
In conclusion, the layered sampling device provided by the invention has the advantages that the overall structure is simple, the manufacturing cost is low, the sampling method using the sampling device has small influence on the sintering production process, the shutdown frequency of the sintering machine is low, the influence on the original distribution state of the mixture of the sintering machine is small, the original distribution state of the mixture of the sintering machine is reflected more truly, and the reliability of the layered sampling detection result is improved.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic structural diagram of a layered sampling apparatus according to the present invention;
FIG. 2 is a schematic view of the base cartridge of FIG. 1;
FIG. 3 is a schematic view of the sleeve of FIG. 1;
FIG. 4 is a material bed particle size distribution rule at the position 1 of the sintering pallet in the present invention;
FIG. 5 is a material bed particle size distribution rule at position 2 of the sintering machine trolley in the invention;
FIG. 6 is a material bed particle size distribution rule at position 3 of the sintering machine trolley in the invention;
the labels in the above figures are: 1. the base comprises a base barrel, 11 conical insertion parts, 2 sleeves, 3 positioning sleeve lugs, 4 annular clamping grooves and 5 annular bulges.
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 will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific implementation scheme of the invention is as follows: as shown in fig. 1 to 3, the layered sampling device according to the present invention includes a base cylinder 1 and sleeves 2, wherein a plurality of sleeves 2 are detachably sleeved above the base cylinder 1 in sequence, the base cylinder 1 and the sleeves 2 are formed by cutting a round steel pipe with the same length, the diameter of the round steel pipe is 300mm to 450mm, the wall thickness is 3mm to 5mm, and the lengths of the base cylinder 1 and the sleeves 2 are 200mm to 400mm, and the layered sampling device has a simple overall structure, is easy to manufacture, and has a low manufacturing cost, wherein the number of the sleeves 2 is determined by the thickness of a mixed material layer of a sintering machine, and the number of the common sleeves 2 is 2 to 5; in order to prevent the sleeves 2 from sliding after being sleeved, one end of each sleeve 2 is provided with a plurality of positioning sleeve lugs 3 which prevent the sleeves 2 which are arranged in a stacked mode from sliding up and down along the circumferential direction, each positioning sleeve lug 3 is of a strip-shaped steel plate structure, the thickness of each positioning sleeve lug 3 is 3-5 mm, the length of each positioning sleeve lug is 80-120 mm, and the width of each positioning sleeve lug is 40-80 mm, each positioning sleeve lug 3 extends outwards along the length direction of each sleeve 2 by 40-80 mm, in order to enable the overall structure of the stacked base barrel 1 and the sleeves 2 to be more stable, annular clamping grooves 4 are formed in one ends of the base barrel 1 and the sleeves 2, annular bulges 5 connected with the annular clamping grooves 4 in a clamped mode are arranged at the other ends of the sleeves 2, the stacked placement is completed in a clamped mode, and the circumferential positioning; in addition, in order to reduce the resistance of the layered sampling device entering the mixed material layer, the lower edge of the base cylinder 1 at the lowest layer is subjected to grinding and sharpening treatment, so that the lower part of the base cylinder 1 forms a conical insertion part 11, and the edge of the conical insertion part 11 is in smooth transition.
The method for taking materials of the mixture of the sintering machine in a layering manner by using the layering sampling device comprises the following steps:
1) normally distributing materials on the sintering machine trolley, closing a fire nozzle of an ignition furnace for 2-3 min after distributing the materials, and ensuring that the mixture of 2-3 sections of sintering machine trolleys is not ignited;
2) after the sintering machine trolley which is not ignited goes out of the heat preservation cover, a corresponding number of sleeves 2 are selected according to the material thickness of the mixture to be stacked and built on the base cylinder 1 to form the layered material taking device, a plurality of layered sampling devices are evenly distributed on the material surface of the central line in the width direction of the sintering machine trolley which is not ignited, the layered sampling devices can be respectively arranged at the two sides and the middle position of the central line, and more than 3 layered sampling devices can be arranged to enable the detection to be more comprehensive;
3) a travelling crane is used for hanging a weight with a flat bottom surface and placing the weight on a layered sampling device, the weight can be set as a turnover box for conveying grate bars, the weight of the turnover box is 1 t-3 t, after the travelling crane unloads force, the layered sampling device is pressed into the bottom of a mixture layer by the weight, and the travelling crane hangs the weight;
4) turning the sintering machine trolley which is not ignited and is provided with the layered sampling device to a position for replacing the sintering machine trolley, stopping the sintering machine, and hoisting out the whole sintering machine trolley;
5) cleaning scattered blanking materials on the sintering machine, replacing an empty trolley of the sintering machine, and then turning the sintering machine to perform sintering production;
6) the method comprises the following steps of carrying out layered sampling on a mixture in a layered sampling device hung out of a trolley, namely carrying out intercepting sampling on the mixture on a layer where each sleeve 2 is located and a layer where a base barrel 1 is located from top to bottom, disassembling the mixture on one layer of sleeve 2 after sampling is finished, and continuing sampling on the next layer until the mixture in the base barrel 1 is taken;
7) and (3) detecting and analyzing the granularity, the carbon content and the chemical composition of the mixture taken out from each layer of the sintering machine trolley at different positions, and comparing the segregation effects of the material distribution in the horizontal direction and the vertical direction respectively.
Example (b): the layered sampling method is carried out in a sintering plant with the thickness of 300m2The operation is carried out on a sintering machine, the specification of a single-section trolley of the sintering machine is 4m × 1.5.5 mm, the machine speed is about 1.7m/min, the thickness of a mixed material layer is 850mm (containing a bottom material laying layer is 50mm), and the heights of a base barrel and a sleeve barrel are 200mm, so that the number of the sleeves of the sampling device is designed to be 3, and the specification of a round steel pipe is phi 380mm × 3.5.5 mm.
The specific layered sampling process is as follows: 1. normally distributing materials on a sintering machine trolley before sampling, closing a fire nozzle of an ignition furnace for 2-3 min after distributing the materials, and observing that the mixture of 2-3 trolleys is not ignited from the charge level; 2. after the non-ignition trolley is taken out of the heat-insulation cover, flatly placing the layered sampling devices on the material surface, wherein a specific drop point is close to the central line of the material surface of the non-ignition section along the advancing direction of the trolley, particularly placing the layered sampling devices on the central line of the non-ignition section in the width direction of the trolley at the middle to ensure the integrity of a taken sample, and uniformly placing 3 layered sampling devices in the width direction of the sintering machine trolley so as to simultaneously compare whether the mixture material distribution along the width direction of the sintering machine trolley is uniform, namely respectively placing one layered sampling device at each of two ends and the middle position in the width direction of the sintering machine trolley; 3. the conveying grate bar turnover box which is maintained on site is hung by a travelling crane and is arranged at the upper end of the layered sampling device, the layered sampling device is pressed into the bottom of the mixture layer after the travelling crane unloads force, and the travelling crane hangs away the conveying grate bar turnover box; 4. and transferring the sintering machine trolley which is not ignited and is provided with the layered sampling device to a position for replacing the sintering machine trolley, stopping the sintering machine, lifting out the whole trolley, cleaning scattered blanking on the sintering machine, replacing an empty sintering machine trolley, and transferring the sintering machine to perform sintering production.
On site, the mixture lifted out of the layered sampling device at three positions in the width direction of the sintering pallet is sampled in 4 layers respectively, and the mixture taken out of each layer is subjected to detection and analysis of granularity, carbon content of the mixture, chemical components and the like, as shown in fig. 4-6 and table 1, wherein the position 1 and the position 3 are edge positions in the width direction of the sintering pallet, and the position 2 is a middle position in the width direction of the sintering pallet.
Wherein, fig. 4-6 are the particle size distribution rules of the material layer at different positions respectively, according to fig. 4-6, the average particle size and the +3mm (>3mm) particle size fraction content of the material layer mixture at three positions in the width direction of the sintering pallet increase layer by layer from the upper part of the material layer to the lower part of the material layer, the-0.5 mm (<0.5mm) particle size fraction content decreases layer by layer from the upper part of the material layer to the lower part of the material layer, and the particle size distribution rules meet the particle size distribution requirement that the particle size of the mixture becomes coarse from top to bottom along the height of the material layer. However, the average particle sizes of the mixture at the three positions are 2.832mm, 3.293mm and 3.595mm, respectively, and the average particle sizes at the three positions are equal in an ideal distribution state, and the normal range of segregation is-0.1 mm to 0.1mm, which indicates that the distribution of the sintering mixture in the horizontal direction has large segregation, and it is necessary to carefully observe the installation positions, the degree of wear and the operation state of the round rolls and the nine rolls, and to find out the cause of the distribution segregation in the horizontal direction of the mixture.
Table 1 shows the distribution of chemical components of the mixture at different positions of the material bed, and it can be seen from table 1 that there is no obvious rule for the distribution of total carbon content (TC) of different material beds at each position, and the sintered material fuel requires that the carbon content of the mixture decreases from top to bottom along the height of the material bed, and the distribution rule is not matched with the sintered material fuel, so that the reason for unreasonable fuel distribution needs to be further found out to improve the fuel distribution of the material bed; wherein the total iron (TFe), ferrous oxide (FeO) and alkalinity distribution (CaO and SiO)2The ratio) has no obvious rule, meets the requirement of homogeneous sintering with uniformly distributed mass and chemical components, is favorable for the quality and the component stability of the sinter, but does not meet the requirement of soaking sintering because the total carbon content (TC) distribution has no obvious rule, and the two need to be balanced and improved to a certain extent according to the actual situation.
TABLE 1
In conclusion, the layered sampling device provided by the invention has the advantages that the overall structure is simple, the manufacturing cost is low, the sampling method using the sampling device has small influence on the sintering production process, the shutdown frequency of the sintering machine is low, the influence on the original distribution state of the mixture of the sintering machine is small, the original distribution state of the mixture of the sintering machine is reflected more truly, and the reliability of the layered sampling detection result is improved.
While the foregoing is directed to the principles of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. A method for layered material taking of mixture of a sintering machine is characterized in that: the method comprises the following steps:
1) normally distributing materials on the sintering machine trolley, closing a nozzle of an ignition furnace for a period of time after distributing the materials, and ensuring that the mixture of 2-3 sections of sintering machine trolleys is not ignited;
2) after the sintering machine trolley which is not ignited goes out of the heat preservation cover, flatly placing a plurality of layered sampling devices at different positions of the charge level;
3) a weight with a flat bottom surface is hung by a travelling crane and placed on the layered sampling device, after the travelling crane unloads force, the layered sampling device is pressed into the bottom of the mixed material layer by the weight, and the travelling crane hangs the weight;
4) turning the sintering machine trolley which is not ignited and is provided with the layered sampling device to a position for replacing the sintering machine trolley, stopping the sintering machine, and hoisting out the whole sintering machine trolley;
5) cleaning scattered blanking materials on the sintering machine, replacing an empty trolley of the sintering machine, and then turning the sintering machine to perform sintering production;
6) carrying out layered sampling on the mixture in the layered sampling device which is lifted out of the trolley;
7) and (3) detecting and analyzing the granularity, the carbon content and the chemical composition of the mixture taken out from each layer of the sintering machine trolley at different positions, and comparing the segregation effects of the mixture distributed in the horizontal direction and the vertical direction respectively.
2. The method for layered material taking of mixed materials of a sintering machine according to claim 1, characterized by comprising the following steps: in the step 1), the time for closing the ignition furnace nozzle after distributing is 2-3 min.
3. The method for layered material taking of mixed materials of a sintering machine according to claim 1, characterized by comprising the following steps: in the step 2), a plurality of layered sampling devices are uniformly distributed on the charge level of the central line of the non-ignited sintering machine trolley in the width direction.
4. The method for layered material taking of mixed materials of a sintering machine according to claim 1, characterized by comprising the following steps: the heavy object in the step 3) is set as a turnover box for conveying the grate bars, and the weight of the turnover box is 1 t-3 t.
5. The layered sampling device used in the layered material taking method of the mixture of the sintering machine according to any one of claims 1 to 4 is characterized by comprising a base cylinder (1) and sleeves (2), wherein a plurality of sleeves (2) are sequentially detachably sleeved above the base cylinder (1), and positioning sleeve lugs (3) for preventing the sleeves (2) which are stacked and arranged from sliding up and down are arranged on the sleeves (2).
6. The stratified sampling apparatus of claim 5, wherein: the utility model discloses a sleeve, including sleeve (2), location cover ear (3), one end of sleeve (2) has a plurality of along the welding of circumference the location cover ear (3), location cover ear (3) along the length direction of sleeve (2) outwards stretches out 40mm ~ 80 mm.
7. The stratified sampling apparatus of claim 5, wherein: the base barrel (1) and the sleeve (2) are formed by cutting a round steel pipe in equal length, the pipe diameter of the round steel pipe is 300-450 mm, the wall thickness of the round steel pipe is 3-5 mm, and the length of the base barrel (1) and the length of the sleeve (2) are 200-400 mm.
8. The stratified sampling apparatus of claim 7, wherein: the lower part of the base barrel (1) is provided with a conical insertion part (11), and the edge of the conical insertion part (11) is in smooth transition.
9. The stratified sampling apparatus of claim 7, wherein: the base barrel (1) and the one end of sleeve (2) all are provided with ring groove (4), the other end of sleeve (2) set up with ring groove (4) joint annular arch (5) that link to each other.
10. The stratified sampling apparatus of claim 5, wherein: the number of the sleeves (2) is 2-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010301163.9A CN111442951A (en) | 2020-04-16 | 2020-04-16 | Method for layered material taking of mixture of sintering machine and layered sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010301163.9A CN111442951A (en) | 2020-04-16 | 2020-04-16 | Method for layered material taking of mixture of sintering machine and layered sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111442951A true CN111442951A (en) | 2020-07-24 |
Family
ID=71654108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010301163.9A Pending CN111442951A (en) | 2020-04-16 | 2020-04-16 | Method for layered material taking of mixture of sintering machine and layered sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111442951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933338A (en) * | 2021-10-15 | 2022-01-14 | 马鞍山钢铁股份有限公司 | Sintering layered dissection test equipment and test method |
-
2020
- 2020-04-16 CN CN202010301163.9A patent/CN111442951A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933338A (en) * | 2021-10-15 | 2022-01-14 | 马鞍山钢铁股份有限公司 | Sintering layered dissection test equipment and test method |
| CN113933338B (en) * | 2021-10-15 | 2024-02-09 | 马鞍山钢铁股份有限公司 | Sintering layered anatomical test equipment and test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111442951A (en) | Method for layered material taking of mixture of sintering machine and layered sampling device | |
| CN106239778B (en) | A kind of Novel lining auto-necking machine | |
| CN111440919B (en) | Argon station scrap steel adding method and argon station scrap steel adding system | |
| CN101963446A (en) | Vanadium and nitrogen alloy full-automatic vertical medium frequency induction heating furnace | |
| CN212007930U (en) | Layered sampling device for mixture of sintering machine | |
| CN205851016U (en) | A kind of ball mill steel ball adding device | |
| CN102617053B (en) | Manufacturing technology of ultra-low carbon active lime | |
| CN206478986U (en) | A kind of utilization sheet billet continuous casting waste heat dries the device of iron scale | |
| CN214488721U (en) | Full-automatic hot heading bolt production facility | |
| CN216190299U (en) | Heavy shaft coupling shaft sleeve hot charging device | |
| CN209716141U (en) | It is a kind of for making the device of long radius elbow | |
| CN201897378U (en) | Vanadium-nitrogen alloy fully-automatic vertical intermediate-frequency induction heating furnace | |
| CN206300469U (en) | A kind of submerged arc furnace system | |
| CN210945670U (en) | Electric furnace body for smelting steel slag | |
| CN107062860A (en) | A kind of utilization sheet billet continuous casting waste heat dries the device and method of iron scale | |
| CN202089604U (en) | Automatic graphite feeder | |
| CN210426042U (en) | Large-size push plate nitrogen atmosphere protection sintering furnace | |
| CN203595387U (en) | Rotary chute distributing device | |
| CN207051241U (en) | A kind of single probe all positon EDDY CURRENT machine | |
| CN219200004U (en) | Sintering material level flattening device | |
| CN201424269Y (en) | Feeding device | |
| CN217031979U (en) | Rotary kiln capable of rapidly replacing check ring | |
| CN204188003U (en) | A kind of feeding and conveying device of charging stock for electric furnace | |
| CN117346536A (en) | Device and method for taking mixture sample by trolley of sintering machine without stopping | |
| CN217007081U (en) | Melt test device with lower discharging function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |