CN101988168A - Smelting device of nickel-based intermediate alloy and preparation method thereof - Google Patents
Smelting device of nickel-based intermediate alloy and preparation method thereof Download PDFInfo
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- CN101988168A CN101988168A CN 201010552904 CN201010552904A CN101988168A CN 101988168 A CN101988168 A CN 101988168A CN 201010552904 CN201010552904 CN 201010552904 CN 201010552904 A CN201010552904 A CN 201010552904A CN 101988168 A CN101988168 A CN 101988168A
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Abstract
The invention belongs to the technical field of smelting of a nickel-based intermediate alloy, specifically a smelting device of the nickel-based intermediate alloy and a preparation method thereof. The method is characterized by comprising the steps of: placing waste nickel and other required metal materials in a smelting device consisting of a smelting furnace and a casting pool by starting the smelting furnace to smelt and adding clean water in the casting pool, wherein depth of the clean water is not smaller than 6m; and pouring the alloy water which is at 1480-1580 DEG C in the smelting furnace to a water pool of the casting pool to form nickel-based intermediate alloy fragments. The device and the method of the invention not only solve the problems of extreme environmental pollution generated in process of manufacturing nickel-based intermediate alloy fragments, but more significantly solve the problem that in process of casting nickel-based intermediate alloy molten steel, the sluice is necessary to be filled to cause low molten steel utilization rate and wastes materials. The silicon content of the prepared nickel-based intermediate alloy fragments with particle diameter between 10 and 100mm is below 0.5% and can be added preciously in the steel-smelting furnace so as to smelt stainless steel with precious nickel-based alloy content.
Description
Technical field
The invention belongs to the Metal smelting technical field, relate in particular to a kind of melting method and specific equipment thereof of Ni-based master alloy.
Background technology
Ni-based master alloy is mainly used in metallic substance such as Stainless Steel Alloy and smelts, promptly in smelting process as the additive of various matrix alloies, after the Ni-based master alloy melting as additive all be with blocky form store, transportation and using.The preparation of present Ni-based master alloy piece is that the Ni-based master alloy after the melting is at first poured in the casting ladle by smelting furnace, and then pour in the chute that is built into by refractory brick by casting ladle, pour in down a chimney in the mould via chute, cooling forms standby Ni-based master alloy piece.There are following defective in the equipment and the preparation technology of the Ni-based master alloy piece of above-mentioned preparation: one, owing to use forming mould during the Ni-based master alloy piece of casting, and the mould volume is bigger, the alloy block minimum that is cast into is also more than 10 kilograms, obviously when smelting stainless steel, once at least also to add 10 kilograms Ni-based master alloy and be difficult to smart amount control, therefore can not melt out the accurate stainless steel of Ni-based master alloy content; They are two years old, because constituting the forming mould of the Ni-based master alloy piece of above-mentioned casting is made by cast iron materials, when silicone content in the Ni-based master alloy water of melting is difficult to depanning less than 10% the time, the silicone content in the therefore made Ni-based master alloy piece is higher, can not satisfy the melting of low silicon stainless steel; Its three owing to when the Ni-based master alloy piece of casting, must pour in the chute that is built into by refractory brick, pour in down a chimney in the mould by chute again by casting ladle, therefore, the Ni-based master alloy water that remains in the refractory brick chute solidifies waste because of not entering mould; Its four, the Ni-based master alloy alloy block in the Ni-based centre of above-mentioned casting also can produce extremely serious environmental and pollute.
Summary of the invention
First purpose of the present invention just provides a kind ofly can produce the less smelting apparatus that can satisfy the Ni-based master alloy that the different size stainless steel produces of particle diameter.
Second purpose of the present invention just provides a kind of method of utilizing said apparatus to produce the less Ni-based master alloy fragment of particle diameter.
Realize that the technical scheme that above-mentioned first purpose of the present invention is adopted is:
A kind of smelting apparatus of Ni-based master alloy comprises
Smelting furnace and
By barrel shape pond and supporting with it border be provided with back-up ring, the bottom is the casting pond that mesh-structured runout constitutes;
Place suitable for reading, described pond is provided with water-in, and its bottom is provided with water outlet, and described filling pipe end and water outlet are by the cooling body and the UNICOM of mechanism of drawing water.
In addition, the additional technical feature that constitutes above-mentioned Ni-based master alloy smelting furnace comprises:
The open top place in described pond is provided with the lid that axle connects;
Described lid is two and is arranged at open both sides, described pond respectively;
The pond in described pond is deeply greater than 6 meters;
At described pond sidepiece an active is set and adjusts plate, the actuating unit that the shaft end of described adjustment plate and drive axle rotate is fixed in the two side in the described pond;
Described adjustment plate is made by stainless steel plate;
Between described smelting furnace and casting pond, be provided with the alloy water flow grooves.
Realize that the technical scheme that above-mentioned second purpose of the present invention is adopted is:
The method of promptly utilizing above-mentioned smelting apparatus to prepare Ni-based master alloy fragment comprises the following steps:
The first step, open smelting furnace, at first will be tubulose, flaky useless nickel metal and other metallic substance that needs and insert melting in the body of heater, its add-on is not less than 1/2nd of smelting furnace capacity, and while adding degree of depth in the pond that constitutes the casting pond is not less than six meters clear water;
Second step, after tubulose in adding smelting furnace, the fusing of flaky shape metallic substance, with tilting furnace 30-miter angle, then with useless nickel metal and other metal block or the sheet material that needs of solid shape of surplus smelting furnace capacity insert in the body of heater, again body of heater is set upright, this metal charge of newly acquiring is buried fusing by the metal water of being refined;
The 3rd step, when smelting furnace alloy water temp reaches 1480-1580 ℃, the alloy water of being refined is poured into by body of heater or by described alloy water flow grooves in the pond in casting pond, in casting, started the cooling body in described pond and the mechanism of drawing water and make the water temperature in the pond keep constant;
In the 4th step, the Ni-based master alloy fragment that will form in the pond is pulled out by runout and to be got final product.
In addition, in above-mentioned preparation method, the water temperature in the pond, described casting pond is arranged between 40-60 ℃; By body of heater or when pouring in the pond in casting pond by described alloy water flow grooves, described body of heater or alloy water flow grooves get head piece and are flat mouthful, and the thickness of effusive alloy water is 10 with the alloy water refined---between 100 millimeters.
Description of drawings
Fig. 1: for constituting the structural representation of Ni-based master alloy smelting furnace body of heater;
Fig. 2: for constituting the structural representation in Ni-based master alloy casting pond;
Fig. 3: for constituting the structural representation of above-mentioned alloy casting pond runout;
Fig. 4: for constituting the structural representation in above-mentioned big opening alloy casting pond;
Fig. 5: for constituting the structural representation of above-mentioned smelting furnace body of heater.
Embodiment
Below in conjunction with the accompanying drawings the structure of the Ni-based master alloy smelting furnace of formation provided by the present invention and the principle of work of utilizing this smelting furnace to prepare Ni-based master alloy fragment thereof being described in further detail:
Be illustrated in figure 1 as the structural representation that constitutes Ni-based master alloy smelting apparatus provided by the present invention.Promptly this smelting apparatus comprises smelting furnace 24 and casting pond 25 and constitutes in the alloy water flow grooves 26 of the two setting.
Be illustrated in figure 2 as the structural representation that constitutes the casting pond in the Ni-based master alloy smelting apparatus.Promptly the structure in this casting pond comprise bucket dark be at least six meters be loaded with the degree of depth be at least 6 meters cold water 14 barrel shape pond 1 and can sink to the pond at the bottom of and can hang out the runout 2 in pond, wherein the place suitable for reading in barrel shape pond is provided with water-in 3, its bottom is provided with water outlet 4, filling pipe end is communicated with by the cooling body 15 that is connected by water pipe 5 with water outlet, and is provided with the mechanism 6 of drawing water; 7 be mesh 8 structures that can leak at the bottom of the case of runout as shown in Figure 3, its border is provided with the back-up ring 10 that is used for the Ni-based master alloy fragment 9 that splendid attire casts of certain altitude (its highly can be from 10 centimetres to 100 centimetres be provided with).
When utilizing above-mentioned Ni-based master alloy smelting apparatus to prepare the alloy fragment, open smelting furnace, at first will be tubulose, the useless nickel metal of flaky easy fusing and other metallic substance that needs are inserted melting in the body of heater, its add-on is not less than 1/2nd of smelting furnace capacity, in the pond that constitutes the casting pond, add simultaneously the degree of depth and be six meters to eight meters (depth of water can be set according to the volume of smelting furnace---the alloy water that is about to melting in the smelting furnace is poured in the pond, the formed alloy fragment tool pond water surface is not less than six meters---when alloy fragment particle diameter 10---in the time of 100 millimeters, do not sticked together if can effectively not cool off when the depth of water is lower than six meters, make the alloy of pouring in the pond can not form fragment), water temperature is at 40-60 ℃ clear water, and the clear water of this temperature can guarantee to satisfy the particle diameter of the alloy fragment that forms 0.5---between 10 centimetres; Then, after tubulose in adding smelting furnace, the fusing of flaky shape alloy metal material, with tilting furnace 30-miter angle, again with the useless nickel metal of solid shape and other metal block or the sheet material that needs of difficult fusing of surplus smelting furnace capacity insert in the body of heater, body of heater is set upright, by the alloyed metal water of having refined this metal charge of newly acquiring is buried fusing (can effectively improve the burn-off rate of solid useless nickel metal, reach the purpose of save energy); The 3rd step, when smelting furnace alloy water temp reaches 1480-1580 ℃, the alloy water of being refined come down in torrents by body of heater and from fire door, pour in the pond in casting pond, in casting, start the cooling body in pond and the mechanism of drawing water; The 4th step after the alloy water in the smelting furnace alloy has been fallen, can form the Ni-based master alloy fragment of particle diameter between 10-100 millimeters, and it is air-dry then runout to be sling, and promptly is met the Ni-based master alloy grain piece of requirement.
When above-mentioned Ni-based master alloy smelting apparatus prepares the alloy fragment,, can an active alloy water flow grooves be set at the two if it is fixing respectively to constitute the smelting furnace and the casting pond of Ni-based master alloy smelting apparatus.Be after smelting furnace alloy water temp reaches 1480-1580 ℃, alloy current truss between the two, is come down in torrents the alloy water of being refined and to pour into from fire door in the alloy water flow grooves by body of heater, flow in the pond in casting pond by the alloy water flow grooves again.
In above-mentioned Ni-based master alloy smelting apparatus, producing high temperature in order to prevent to pour into Ni-based master alloy water in the casting pond water dabbles and causes the accident, respectively be provided with the lid 12 that axle 11 flexibly connects at the open top place in pond sidepiece, the length of this lid is less than open length, forms alloy water when uncovered and pours hole 13 into when lid covers.When Ni-based master alloy water was poured in the water in casting pond by pouring the hole into, this lid can effectively prevent spilling of high-temperature water.
As shown in Figure 4, when the uncovered bore in designed pond is big, the lid at open top place, pond can be for splitting structure, promptly respectively be provided with the lids 17,19 that axle 16,18 flexibly connects, and this lid sidepiece of splitting is formed with Ni-based master alloy molten steel and pours hole 13 in uncovered corresponding both sides.
In order to prevent that Ni-based master alloy water from pouring that the back forms a stone roller piece in the casting pond water into, pour the pond sidepiece setting in hole into and make by slick stainless steel plate by rotating shaft 21 movable fixed and adjust plate 22 and drive the actuating unit 23 that rotating shaft is rotated being provided with alloy water.During use, start actuating unit and drive and adjust plate 22 and rotate and adjust angles, come down in torrents and the Ni-based master alloy molten steel of going at first enters and forms the particulate state alloy block in the water, in the runout in slipping at the bottom of the pond along the slick adjustment plate of making by stainless material then.The rotational angle of constantly adjusting plate can be so that the particulate state alloy block be evenly distributed in the runout.The back rotation of having worked is adjusted plate or is faced upward or downward on the wall that is attached to the casting pond, the runout of studded shape alloy block can be sling.
When alloying, when smelting furnace alloy water temp reached 1480-1580 ℃, flowability is the not easy moulding of sticking bag wall preferably, poured in the casting pond and can make particle diameter 10---100 millimeters alloy fragment.When smelting furnace alloy water temp is lower than 1480 ℃, alloy water adhesion bag wall phenomenon not only can occur, and the diameter that alloy water is poured formed alloy block behind the pond into becomes big; Otherwise when smelting furnace alloy water temp was higher than 1580 ℃, alloy water poured that the diameter of formed alloy block diminishes behind the pond into, all can not meet the demands.
Utilize the Ni-based master alloy casting pond of said structure, water temperature that the degree of depth is at least 6 meters is housed in the pond remains on cold water between 40-60 ℃, and when pouring the casting pond into by body of heater or by the alloy water flow grooves, the thickness of effusive alloy water should be controlled at 10---between 100 millimeters (for this reason as shown in Figure 5, the open-mouth setting of smelting furnace alloying furnace have and pouring gate 13 width in the pond of casting are complementary and the degree of depth 10---the alloy water pouring spout 27 between 100 millimeters), after this moment, Ni-based master alloy molten steel was directly poured in the cold water, volume sharply shrinks owing to cool off fast, therefore can form particle diameter 10---granular Ni-based master alloy fragment between 100 millimeters.During the water temperature of the water in above-mentioned casting pond is provided with,, can makes alloy water enter behind the pond and sharply shrink fast and form the minimum fragment of particle diameter, in the time of can making the refining stainless steel and form the waste of additive if water temperature is low excessively; And when water temperature is too high above 60 ℃, after alloy water enters the pond, can makes that the water electrode in the pond is prone to boiling phenomenon, and accident occur that fierce ebullient water also causes the fragmentation of alloy block easily simultaneously, cause the particle of alloy fragment to diminish.
Utilize smelting apparatus that the present invention proposes and preparation method thereof preparation nickel-based intermediate alloy fragment, compared with prior art, the first, solved and utilized prior art to produce the great problem of environmental pollution that produces in the production process of nickel-based intermediate alloy fragment; The second, solved in the nickel-based intermediate alloy molten steel casting process because filling the problem of the low waste of material of molten steel Utilization rate that chute causes; The 3rd, prepared particle diameter is 10---and nickel-based intermediate alloy fragment between 100 millimeters can be realized making steel in the body of heater smart amount and add, and melts out the accurate stainless steel of nickel-base alloy content; The 4th, because the production technology of this nickel-based intermediate alloy fragment does not re-use the mould of being made by cast iron materials, therefore can realize the low silicon content that nickel-base alloy contains, and can produce silicone content at the nickel-based intermediate alloy fragment below 0.5%, satisfy the needs of low silicon stainless steel refining.
Claims (10)
1. the smelting apparatus of a Ni-based master alloy is characterized in that: comprise
Smelting furnace and
By barrel shape pond and supporting with it border be provided with back-up ring, the bottom is the casting pond that mesh-structured runout constitutes;
Place suitable for reading, described pond is provided with water-in, and its bottom is provided with water outlet, and described filling pipe end and water outlet are by the cooling body and the UNICOM of mechanism of drawing water.
2. the smelting apparatus of a kind of Ni-based master alloy as claimed in claim 1 is characterized in that: the open top place in described pond is provided with the lid that axle connects.
3. the smelting apparatus of a kind of Ni-based master alloy as claimed in claim 2 is characterized in that: described lid is two and is arranged at open both sides, described pond respectively.
4. the smelting apparatus of a kind of Ni-based master alloy as claimed in claim 1, it is characterized in that: the pond in described pond is deeply greater than 6 meters.
5. the smelting apparatus of a kind of Ni-based master alloy as claimed in claim 4 is characterized in that: at described pond sidepiece an active is set and adjusts a plate, the shaft end of described adjustment plate and drive actuating unit that axle rotates and be fixed in two side in the described pond.
6. the smelting apparatus of a kind of Ni-based master alloy as claimed in claim 5, it is characterized in that: described adjustment plate is made by stainless steel plate.
7. the smelting apparatus of a kind of Ni-based master alloy as claimed in claim 1 is characterized in that: be provided with the alloy water flow grooves between described smelting furnace and casting pond.
8. the method for utilizing above-mentioned smelting apparatus to prepare Ni-based master alloy fragment comprises the following steps:
The first step, open smelting furnace, at first will be tubulose, flaky useless nickel metal and other metallic substance that needs and insert melting in the body of heater, its add-on is not less than 1/2nd of smelting furnace capacity, and while adding degree of depth in the pond that constitutes the casting pond is not less than six meters clear water;
Second step, after tubulose in adding smelting furnace, the fusing of flaky shape metallic substance, with tilting furnace 30-miter angle, then with useless nickel metal and other metal block or the sheet material that needs of solid shape of surplus smelting furnace capacity insert in the body of heater, again body of heater is set upright, this metal charge of newly acquiring is buried fusing by the metal water of being refined;
The 3rd step, when smelting furnace alloy water temp reaches 1480-1580 ℃, the alloy water of being refined is poured into by body of heater or by described alloy water flow grooves in the pond in casting pond, in casting, started the cooling body in described pond and the mechanism of drawing water and make the water temperature in the pond keep constant;
In the 4th step, the Ni-based master alloy fragment that will form in the pond is pulled out by runout and to be got final product.
9. the method for the Ni-based master alloy fragment of preparation as claimed in claim 8 is characterized in that: the water temperature in the pond, described casting pond is arranged between 40-60 ℃.
10. the method for the Ni-based master alloy fragment of preparation as claimed in claim 8, it is characterized in that: with the alloy water refined by body of heater or when pouring in the pond in casting pond by described alloy water flow grooves, described body of heater or alloy water flow grooves get head piece and are flat mouthful, and the thickness of effusive alloy water is 10---between 100 millimeters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010552904 CN101988168A (en) | 2010-11-22 | 2010-11-22 | Smelting device of nickel-based intermediate alloy and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010552904 CN101988168A (en) | 2010-11-22 | 2010-11-22 | Smelting device of nickel-based intermediate alloy and preparation method thereof |
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| CN 201010552904 Pending CN101988168A (en) | 2010-11-22 | 2010-11-22 | Smelting device of nickel-based intermediate alloy and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068283A (en) * | 1991-07-08 | 1993-01-27 | 埃以凯姆公司 | Make the method for particle |
| CN1335412A (en) * | 2000-06-28 | 2002-02-13 | 米德雷克斯国际公司苏黎世分公司 | Method for producing granulated metal iron |
| WO2003106012A1 (en) * | 2002-06-17 | 2003-12-24 | Elkem Asa | Method and apparatus for granulating molten metal |
| CN101528949A (en) * | 2006-11-14 | 2009-09-09 | 株式会社神户制钢所 | Process for production of granular metallic iron and equipment for the production |
-
2010
- 2010-11-22 CN CN 201010552904 patent/CN101988168A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068283A (en) * | 1991-07-08 | 1993-01-27 | 埃以凯姆公司 | Make the method for particle |
| CN1335412A (en) * | 2000-06-28 | 2002-02-13 | 米德雷克斯国际公司苏黎世分公司 | Method for producing granulated metal iron |
| WO2003106012A1 (en) * | 2002-06-17 | 2003-12-24 | Elkem Asa | Method and apparatus for granulating molten metal |
| CN101528949A (en) * | 2006-11-14 | 2009-09-09 | 株式会社神户制钢所 | Process for production of granular metallic iron and equipment for the production |
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Application publication date: 20110323 |