CN109022643B - Method for separating slag and iron in ferrotungsten smelting process by external furnace method - Google Patents
Method for separating slag and iron in ferrotungsten smelting process by external furnace method Download PDFInfo
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- CN109022643B CN109022643B CN201810904481.7A CN201810904481A CN109022643B CN 109022643 B CN109022643 B CN 109022643B CN 201810904481 A CN201810904481 A CN 201810904481A CN 109022643 B CN109022643 B CN 109022643B
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- iron
- ferrotungsten
- slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a method for separating slag and iron in an out-of-furnace ferrotungsten smelting process, which comprises the following steps: 1) naturally cooling ferrotungsten for 2h after the ignition reaction of the cylindrical furnace with small top and big bottom is finished, taking out the furnace sleeve, clamping out the iron ingot, placing the ferrotungsten upwards with the slag surface facing downwards and the ferrotungsten surface facing upwardsPutting the basket into a hanging basket; 2) the stainless steel lifting pier for the hanging basket is supported and put in the position of 0.05-0.25mol/L H2SO4In the dilute sulphuric acid pool, adjusting a lifting pier to ensure that the liquid level completely submerges the boundary between the iron ingot and the residue, and waiting for the residue layer to automatically explode and crack into fragments; 3) and lifting the hanging basket, and directly pouring out slag fragments after picking up the tungsten discus. The invention adopts a new water cooling mode to promote the slag to be fully cracked, and the ferrotungsten still keeps the shape of an iron cake, so that the ferrotungsten and the iron cake are separated more quickly, and the separation effect is obvious.
Description
Technical Field
The invention relates to a method for separating slag and ferrotungsten alloy after ferrotungsten reduction, in particular to a method for separating slag and iron in the process of smelting ferrotungsten by an external furnace method.
Background
At present, a small amount of residues are generated in the ferrotungsten smelting process, the residues and ferrotungsten are difficult to separate, a good separating device is not provided in the prior art, many enterprises still adopt an ancient method, the separation effect can be achieved by directly using a magnet to suck or manually sorting, the labor intensity is high, the efficiency is low, part of enterprises also adopt a water-cooling mode to separate, the two residues are simultaneously broken, and the separation effect is poor.
Disclosure of Invention
In order to solve the problems existing in the background technology, the invention aims to provide a slag-iron separation method in the smelting process of ferrotungsten by an external furnace method, a new water cooling mode is adopted to promote the slag to be fully cracked, and the ferrotungsten still keeps an iron cake shape, so that the slag and the iron are separated more quickly, and the separation effect is obvious.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method for separating slag and iron in the process of smelting ferrotungsten by an external furnace method comprises the following steps:
1) naturally cooling the ferrotungsten for 2 hours after the ignition reaction of the cylindrical furnace with small upper part and large lower part is finished, taking out the furnace sleeve, clamping out the iron ingot, placing the ferrotungsten upwards into the hanging basket with the slag surface facing downwards;
2) the stainless steel lifting pier for the hanging basket is supported and put in the position of 0.05-0.25mol/L H2SO4In the dilute sulphuric acid pool, adjusting a lifting pier to ensure that the liquid level completely submerges the boundary between the iron ingot and the residue, and waiting for the residue layer to automatically explode and crack into fragments;
3) and lifting the hanging basket, and directly pouring out slag fragments after picking up the tungsten discus.
Preferably, in the step 1), the iron ingot is clamped by a clamp crane and transferred to a turnover machine, then the iron ingot is rapidly clamped by the turnover machine and is turned over by 180 degrees, so that the iron ingot is turned over in a large-size and small-size mode, the iron ingot is lifted by the clamp crane and placed in a hanging basket, and the size of the hanging basket is matched with that of the iron ingot.
Preferably, the hanging basket is provided with two movable covers which are arranged oppositely, and the outer sides of six surfaces of the hanging basket are provided with hanging rings.
Preferably, the turnover machine is provided with a clamping plate, the length and the width of the clamping plate are larger than 1/2 section sizes of the iron ingots, the clamping plate is clamped at a half position of the iron ingots, the turnover machine is roughly adjusted through a lifting rod, the iron ingots are finely adjusted and clamped through the clamping plate, a rotating rod of the turnover machine rotates, and 180-degree turnover of the turnover machine is achieved.
Preferably, the bottom of the turnover machine is provided with wheels which can move freely.
Preferably, the step 2) can also wait for the slag layer to automatically explode into fragments by establishing a dilute acid adjusting pool and controlling the liquid level of the dilute acid cooling pool to replace by using a pump.
Preferably, the liquid level of the dilute sulfuric acid is 0.1-1cm above the boundary between the iron ingot and the slag.
Preferably, the outer part of the lifting pier is integrally wrapped by the fluororubber, and the fluororubber is pulled or contracted when the lifting pier rises or falls; silicon carbide refractory bricks are laid on the top of the fluororubber; the surface of the silicon carbide refractory brick is sprayed with inorganic high-temperature resistant coating.
Preferably, the upset machine can be replaced by the clamp formula fork truck of embracing that has fork truck paper roll to press from both sides, the clamp formula fork truck directly presss from both sides the iron ingot upset 180, realizes that the iron ingot is big-end-up upset.
Preferably, the forklift paper roll clamp is made of 310S stainless steel, a 310S stainless steel grid hollowed-out plate is connected to the side face of one paper roll clamp, three columns are welded to the side face of the other paper roll clamp, an iron ingot can be received when the iron ingot is turned over and broken, a gap is formed in the middle of the grid hollowed-out plate, and when the iron ingot is clamped, the 310S stainless steel plate is arranged above.
Through the technical scheme, the method for separating the slag and the iron in the smelting process of the ferrotungsten by the external furnace method provided by the invention adopts a new water cooling mode to promote the slag to be fully cracked, and the ferrotungsten still keeps an iron cake shape, so that the slag and the iron can be separated more quickly, and the separation effect is obvious.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below.
The first embodiment is as follows:
the invention provides a method for separating slag and iron in the process of smelting ferrotungsten by an external furnace method, which comprises the following steps:
1) naturally cooling the ferrotungsten for 2 hours after the ignition reaction of the cylindrical furnace with small upper part and large lower part is finished, taking out the furnace sleeve, clamping out the iron ingot, placing the ferrotungsten upwards into the hanging basket with the slag surface facing downwards; clamping an iron ingot by a clamp crane, transferring the iron ingot to a turnover machine, rapidly clamping the iron ingot by the turnover machine, reversing the iron ingot by 180 degrees to realize turnover of the iron ingot, lifting the iron ingot by the clamp crane and putting the iron ingot into a hanging basket, wherein the size of the hanging basket is matched with that of the iron ingot, the hanging basket cannot be too large and is similar to that of the iron ingot, the hanging basket is provided with two movable oppositely-arranged covers instead of adjacent surfaces, the six outer surfaces of the hanging basket are provided with hanging rings, the hanging rings are clamped by the clamp crane, the iron ingot can be turned upside down by turning twice in principle, a clamping plate is arranged on the turnover machine, the length and width of the clamping plate are larger than the 1/2 sectional dimension of the iron ingot, the clamping plate is clamped at a half position of the iron ingot, and the position is reserved for subsequently lifting the iron ingot by the clamp crane; the turnover machine is roughly adjusted through a lifting rod, the iron ingot is clamped through fine adjustment of a clamping plate, a rotating rod of the turnover machine rotates to realize 180-degree turnover of the turnover machine, and wheels are arranged at the bottom of the turnover machine and can freely move;
2) the stainless steel lifting pier for the hanging basket is supported and put in the position of 0.05-0.25mol/L H2SO4In the dilute sulphuric acid pool, a lifting pier is adjusted to ensure that the liquid level completely submerges the boundary between the iron ingot and the residue, and the slag layer is automatically exploded into fragments without breaking the ferrotungsten cake;
3) and lifting the hanging basket, and directly pouring out slag fragments after picking up the tungsten discus.
The outer part of the lifting pier is integrally wrapped by fluororubber, the elasticity of the fluororubber is high, and the fluororubber is pulled or contracted when the lifting pier rises or falls; because the fluororubber is not high-temperature resistant, a silicon carbide refractory brick is laid on the top of the fluororubber (the part in contact with the basket); the silicon carbide refractory brick is not resistant to acid corrosion, and the surface of the silicon carbide refractory brick is sprayed with an inorganic high-temperature-resistant coating.
Example two:
the method for separating the slag from the iron in the process of smelting ferrotungsten by the external furnace method is different from the first embodiment in that the step 2) can also wait for the slag layer to automatically explode into fragments by establishing a dilute acid adjusting tank and controlling the liquid level of the dilute acid cooling tank to replace the liquid level by using a pump, and the liquid level of the dilute sulfuric acid is 0.1-1cm higher than the boundary line between an iron ingot and the slag.
Example three:
the invention provides a method for separating slag and iron in an out-of-furnace tungsten-iron smelting process, which is different from the first embodiment in that a turnover machine can be replaced by a clamping forklift with a forklift paper roll clamp, the clamping forklift directly clamps an iron ingot to turn over for 180 degrees to realize the turning of the iron ingot in the vertical direction, the forklift paper roll clamp is made of 310S stainless steel, a 310S stainless steel grid hollowed-out plate is connected to the side surface of one paper roll clamp of the forklift paper roll clamp, and the grid hollowed-out plate is used for good observation; three columns are welded on the side face of the paper roll clamp on the other side, the columns are connected with the plate, the columns are about 1-2cm high, the opening and closing of the clamp cannot be affected, if the iron ingot is broken in a turnover mode, the iron ingot can be received, a gap is formed in the middle of the grid hollowed-out plate, the width of the gap is about 3cm, the gap is used for passing through a hanging chain or a clamp of a clamp crane, and when the iron ingot is clamped, a 310S stainless steel plate is arranged above the gap, so that the broken iron ingot can be received.
The invention discloses a slag-iron separation method in the smelting process of ferrotungsten outside an furnace, which adopts a new water cooling mode to promote the slag to be fully cracked, and the ferrotungsten still keeps an iron cake shape, so that the slag and the iron are separated more quickly, and the separation effect is obvious. The invention also utilizes the principle of cooling dilute sulphuric acid, the sulphuric acid can react with the residue to accelerate the fracture of the slag, and the dilute sulphuric acid only submerges the slag layer and can keep the ferrotungsten cake basically not to fracture.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for separating slag and iron in the process of smelting ferrotungsten by an external furnace method is characterized by comprising the following steps:
1) naturally cooling the ferrotungsten for 2 hours after the ignition reaction of the cylindrical furnace with small upper part and large lower part is finished, taking out the furnace sleeve, clamping out the iron ingot, placing the ferrotungsten upwards into the hanging basket with the slag surface facing downwards;
2) the stainless steel lifting pier for the hanging basket is supported and put in the position of 0.05-0.25mol/L H2SO4In the dilute sulphuric acid pool, adjusting a lifting pier to ensure that the liquid level completely submerges the boundary between the iron ingot and the residue, and waiting for the residue layer to automatically explode and crack into fragments;
3) and lifting the hanging basket, and directly pouring out slag fragments after picking up the tungsten discus.
2. The method for separating iron and slag in the process of smelting ferrotungsten outside the furnace as claimed in claim 1, wherein in step 1), the iron ingot is clamped by a clamp crane and transferred to a turnover machine, then the iron ingot is rapidly clamped by the turnover machine and is turned over by 180 degrees, so that the iron ingot is turned over in a large and small mode, the iron ingot is lifted by the clamp crane and placed in a hanging basket, and the size of the hanging basket is matched with that of the iron ingot.
3. The method of claim 2, wherein the basket is provided with two removable opposed lids, and the basket is provided with lifting rings mounted on six outer sides of the basket.
4. The method for separating slag and iron in the out-of-furnace ferrotungsten smelting process according to claim 2, wherein the turnover machine is provided with a clamping plate, the length and the width of the clamping plate are larger than 1/2 section size of an iron ingot, the clamping plate is clamped at a half position of the iron ingot, the turnover machine is roughly adjusted through a lifting rod, the clamping plate is finely adjusted to clamp the iron ingot, and a rotating rod of the turnover machine rotates to realize 180-degree turnover of the turnover machine.
5. The method for slag-iron separation in the out-of-furnace ferrotungsten smelting process as claimed in claim 4, wherein the bottom of the tilter is provided with wheels which can move freely.
6. The method for separating slag and iron in the out-of-furnace ferrotungsten smelting process according to claim 1, wherein the step 2) can also wait for the slag layer to automatically explode into fragments by establishing a dilute acid adjusting pool and controlling the liquid level of the dilute acid cooling pool to replace by using a pump.
7. The method of claim 1, wherein the level of said dilute sulfuric acid is 0.1-1cm above the ingot-slag boundary.
8. The method for slag-iron separation in the out-of-furnace ferrotungsten smelting process as claimed in claim 1, wherein the outside of the lifting pier is wholly wrapped by fluororubber, and the fluororubber is pulled or contracted along with the lifting pier when the lifting pier rises or falls; silicon carbide refractory bricks are laid on the top of the fluororubber; the surface of the silicon carbide refractory brick is sprayed with inorganic high-temperature resistant coating.
9. The method for slag-iron separation in the out-of-furnace ferrotungsten smelting process as claimed in claim 2, wherein the turning machine can be replaced by a clamping forklift with a forklift paper roll clamp, the clamping forklift directly clamps the iron ingot to turn 180 degrees, and the iron ingot is turned upside down.
10. The method of claim 9, wherein said forklift paper roll holder is made of 310S stainless steel, a 310S stainless steel grid plate is attached to the side of one paper roll holder, three posts are welded to the side of the other paper roll holder, for example, an iron ingot can be received when the iron ingot is turned over and broken, a gap is opened in the middle of said grid plate, and the 310S stainless steel plate is placed above the iron ingot when the iron ingot is held.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810904481.7A CN109022643B (en) | 2018-08-09 | 2018-08-09 | Method for separating slag and iron in ferrotungsten smelting process by external furnace method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810904481.7A CN109022643B (en) | 2018-08-09 | 2018-08-09 | Method for separating slag and iron in ferrotungsten smelting process by external furnace method |
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| CN109022643A CN109022643A (en) | 2018-12-18 |
| CN109022643B true CN109022643B (en) | 2020-06-23 |
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| CN201810904481.7A Expired - Fee Related CN109022643B (en) | 2018-08-09 | 2018-08-09 | Method for separating slag and iron in ferrotungsten smelting process by external furnace method |
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| CN101270399A (en) * | 2008-04-30 | 2008-09-24 | 武汉科技大学 | Method for producing metallic iron grain with iron containing waste slag dust |
| CN104046782B (en) * | 2014-07-02 | 2015-10-07 | 李海波 | Tungstenic, iron industrial waste and low difficulty select ferberite recovery method |
| CN104046800B (en) * | 2014-07-11 | 2016-01-20 | 谭春波 | A kind of from containing the technique extracting white tungsten fine ore ferberite or tungstenic waste residue |
| CN105460981B (en) * | 2015-12-24 | 2019-04-05 | 湖南力天高新材料股份有限公司 | A method of tungsten carbide and cobalt chloride are prepared with tungsten waste |
| CN106854707B (en) * | 2016-12-02 | 2018-10-23 | 陕西友力实业有限公司 | A kind of method of microwave heating production ferro-tungsten |
| KR101765465B1 (en) * | 2017-03-17 | 2017-08-08 | 주식회사 볼텍코리아 | Manufacturing method of ferro-tungsten |
| CN107099718B (en) * | 2017-06-13 | 2018-08-28 | 东北大学 | The method for preparing ferro-tungsten with wash heat refining based on the reduction of aluminothermy self- propagating gradient |
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