CN1847421A - Method of producing Ni-Cr pellet with industrial Ni-Cr waste - Google Patents
Method of producing Ni-Cr pellet with industrial Ni-Cr waste Download PDFInfo
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- CN1847421A CN1847421A CN 200610039993 CN200610039993A CN1847421A CN 1847421 A CN1847421 A CN 1847421A CN 200610039993 CN200610039993 CN 200610039993 CN 200610039993 A CN200610039993 A CN 200610039993A CN 1847421 A CN1847421 A CN 1847421A
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- chromium triangle
- nickel
- nickel chromium
- trade waste
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Abstract
The method of producing Ni-Cr pellet with industrial Ni-Cr waste includes the following steps: mixing industrial Ni-Cr waste and additive in the weight ratio of 100 to 0.5-1.2 in a mixer, pelletizing in a pelletizing machine, sieving to obtain raw pellet and returned material, roasting raw pellet in a vertical furnace at high temperature of 1100-1300 deg.c, sieving to obtain Ni-Cr pellet and returned material. The present invention realizes the circular utilization of industrial waste.
Description
Technical field
The invention belongs to the raw material technical field of blast-furnace smelting nichrome, relate to the method for producing the Ni and Cr contained pellet with the trade waste of Ni and Cr contained particularly.
Background technology
Up to now, discard nickel chromium triangle trade wastes such as tailings behind dedusting ash that the granularity that stainless steel smelting process produces is superfine and the wet extraction nickel, because of utilizing a large amount of discarded severe contaminations that cause environment.And valuable nickel chromium triangle resource also goes out of use and is not used.
Summary of the invention
The object of the invention provides a kind of method of utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet, and described nickel chromium triangle pellet will be as the raw material of blast-furnace smelting nichrome.
The present invention is implemented by the following technical programs, a kind of method of utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet, and it comprises the steps: nickel chromium triangle trade waste and additive together sent into to send into after mixing machine mixes to make ball on the pelletizer; The product that obtains on the pelletizer sieved obtain green pellets and make the ball returning charge, described green pellets is sent to palletizing shaft furnace, and green pellets is burnt in baking under 1100-1300 ℃ of high temperature, the product after baking is burnt sieves nickel chromium triangle pellet and the sintering returning charge that obtains; The weight ratio of wherein said nickel chromium triangle trade waste and additive is: 100: 0.5～1.2.
Described nickel chromium triangle trade waste is the stainless steel roll scale, carry the nickel tailings, at least a or two above mixtures in the stainless steel steel-making dedusting ash.
Described nickel chromium triangle trade waste is a mixture of putting forward nickel tailings and stainless steel steel-making dedusting ash, and its weight ratio is: 1: 1; The weight content that mixes following each composition in back is: iron: 42%; Iron protoxide: 5.0%; Sulphur: 0.06%; Phosphorus: 0.047%; Manganese: 0.57%; Silicon-dioxide: 7.0%; Calcium oxide: 5.8%; Magnesium oxide: 4.4%; Nickel: 1.04%; Chromium: 8.2%; Aluminum oxide: 4.45%; Water: 20%.
The composition weight content of described stainless steel roll scale is: iron: 54%; Ferric oxide: 2.57%; Sulphur: 0.064%; Phosphorus: 0.028%; Manganese: 3.08%; Silicon-dioxide: 4.43%; Calcium oxide: 1.70%; Magnesium oxide: 0.76%; Nickel: 0.82%; Chromium: 7.74%; Aluminum oxide: 0.8%; Water: 3～5%;
The described composition weight content of carrying the nickel tailings is: iron: 46～50%; Sulphur: 0.02%; Phosphorus: 0.07%; Manganese: 0.8%; Silicon-dioxide: 8～10%; Calcium oxide: 0.1%; Magnesium oxide: 5～6%; Nickel: 0.29～0.35%; Chromium: 2.5～3.2%; Aluminum oxide: 6～7%; Water: 20%;
Described stainless steel steel-making dedusting ash composition weight content is: iron: 34.05%; Ferric oxide: 9.82%; Sulphur 0.095%; Phosphorus: 0.023%; Manganese: 0.34%; Silicon-dioxide: 5.05%; Calcium oxide: 11.50%; Magnesium oxide: 3.24%; Nickel: 1.74%; Chromium: 13.58%; Aluminum oxide: 2.39%; Water: 20%.
Describedly make the ball returning charge and described nickel chromium triangle trade waste, additive after mixing on the mixing machine together sent into pelletizer as the raw material of making ball next time.
With described sintering returning charge levigate after, together send into mixing machine as next raw materials mixed with described nickel chromium triangle trade waste, additive.
Described additive is a wilkinite.
The present invention compared with prior art has following advantage: the present invention produces the nickel chromium triangle pellet of natural alkalinity with the nickel chromium triangle trade waste, and the nickel chromium triangle pellet is used as the raw material of blast-furnace smelting nichrome, be the good method that realizes the trade waste cycling and reutilization.
Embodiment
Embodiment 1:
At first with the stainless steel steel-making dedusting ash of granularity below 200 orders, to carry nickel tailings and wilkinite be that 50: 50: 0.8 ratio is prepared burden by weight.
The described composition weight content of carrying the nickel tailings is: iron: 46～50%; Sulphur: 0.02%; Phosphorus: 0.07%; Manganese: 0.8%; Silicon-dioxide: 8～10%; Calcium oxide: 0.1%; Magnesium oxide: 5～6%; Nickel: 0.29～0.35%; Chromium: 2.5～3.2%; Aluminum oxide: 6～7%; Water: 20%;
Described stainless steel steel-making dedusting ash composition weight content is: iron: 34.05%; Ferric oxide: 9.82%; Sulphur 0.095%; Phosphorus: 0.023%; Manganese: 0.34%; Silicon-dioxide: 5.05%; Calcium oxide: 11.50%; Magnesium oxide: 3.24%; Nickel: 1.74%; Chromium: 13.58%; Aluminum oxide: 2.39%; Water: 20%.
The weight content that following each composition in back is mixed in the batching back is: iron: 42%; Iron protoxide: 5.0%; Sulphur: 0.06%; Phosphorus: 0.047%; Manganese: 0.57%; Silicon-dioxide: 7.0%; Calcium oxide: 5.8%; Magnesium oxide: 4.4%; Nickel: 1.04%; Chromium: 8.2%; Aluminum oxide: 4.45%; Water: 20%.
Then it is sent into mixing machine and mix, send into after mixing and make ball on the pelletizer; The product that obtains on the pelletizer sieved obtain green pellets and make the ball returning charge, described green pellets is sent to common 4m
2Or 8m
2In the palletizing shaft furnace and will make ball returning charge foldback and return pelletizer and carry out secondary and make ball, green pellets is burnt in baking under 1200 ℃ of high temperature, product is burnt in baking sieve pellet and the sintering returning charge that obtains natural alkalinity about 0.8, the sintering returning charge is levigate, and foldback returns and carries out secondary in the mixing machine and mix, and promptly finishes whole technology.
Describedly make the ball returning charge and described nickel chromium triangle trade waste, additive after mixing on the mixing machine together sent into pelletizer as the raw material of making ball next time.
With described sintering returning charge levigate after, together send into mixing machine as next raw materials mixed with described nickel chromium triangle trade waste, additive.
Claims (7)
1, a kind of method of utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet is characterized in that: it comprises the steps: nickel chromium triangle trade waste and additive together sent into to send into after mixing machine mixes to make ball on the pelletizer; The product that obtains on the pelletizer sieved obtain green pellets and make the ball returning charge, described green pellets is sent to palletizing shaft furnace, and green pellets is burnt in baking under 1100-1300 ℃ of high temperature, the product after baking is burnt sieves nickel chromium triangle pellet and the sintering returning charge that obtains; The weight ratio of wherein said nickel chromium triangle trade waste and additive is: 100: 0.5～1.2.
2, the method for utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet according to claim 1 is characterized in that: described nickel chromium triangle trade waste is the stainless steel roll scale, carry at least a or two above mixtures in nickel tailings, the stainless steel steel-making dedusting ash.
3, the method for utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet according to claim 2 is characterized in that: described nickel chromium triangle trade waste is a mixture of putting forward nickel tailings and stainless steel steel-making dedusting ash, and its weight ratio is: 1: 1; The weight content that mixes following each composition in back is: iron: 42%; Iron protoxide: 5.0%; Sulphur: 0.06%; Phosphorus: 0.047%; Manganese: 0.57%; Silicon-dioxide: 7.0%; Calcium oxide: 5.8%; Magnesium oxide: 4.4%; Nickel: 1.04%; Chromium: 8.2%; Aluminum oxide: 4.45%; Water: 20%.
4, the method for utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet according to claim 2, it is characterized in that: the composition weight content of described stainless steel roll scale is: iron: 54%; Ferric oxide: 2.57%; Sulphur: 0.064%; Phosphorus: 0.028%; Manganese: 3.08%; Silicon-dioxide: 4.43%; Calcium oxide: 1.70%; Magnesium oxide: 0.76%; Nickel: 0.82%; Chromium: 7.74%; Aluminum oxide: 0.8%; Water: 3～5%;
The described composition weight content of carrying the nickel tailings is: iron: 46～50%; Sulphur: 0.02%; Phosphorus: 0.07%; Manganese: 0.8%;
Silicon-dioxide: 8～10%; Calcium oxide: 0.1%; Magnesium oxide: 5～6%; Nickel: 0.29～0.35%; Chromium: 2.5～3.2%; Aluminum oxide: 6～7%; Water: 20%;
Described stainless steel steel-making dedusting ash composition weight content is: iron: 34.05%; Ferric oxide: 9.82%; Sulphur 0.095%; Phosphorus: 0.023%; Manganese: 0.34%; Silicon-dioxide: 5.05%; Calcium oxide: 11.50%; Magnesium oxide: 3.24%; Nickel: 1.74%; Chromium: 13.58%; Aluminum oxide: 2.39%; Water: 20%.
5, the method for utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet according to claim 1 is characterized in that: describedly make the ball returning charge and described nickel chromium triangle trade waste, additive after mixing on the mixing machine together sent into pelletizer as the raw material of making ball next time.
6, the method for utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet according to claim 1, it is characterized in that: with described sintering returning charge levigate after, together send into mixing machine as next raw materials mixed with described nickel chromium triangle trade waste, additive.
7, the method for utilizing the nickel chromium triangle trade waste to produce the nickel chromium triangle pellet according to claim 1, it is characterized in that: described additive is a wilkinite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610039993 CN1847421A (en) | 2006-04-25 | 2006-04-25 | Method of producing Ni-Cr pellet with industrial Ni-Cr waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610039993 CN1847421A (en) | 2006-04-25 | 2006-04-25 | Method of producing Ni-Cr pellet with industrial Ni-Cr waste |
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| Publication Number | Publication Date |
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| CN1847421A true CN1847421A (en) | 2006-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610039993 Pending CN1847421A (en) | 2006-04-25 | 2006-04-25 | Method of producing Ni-Cr pellet with industrial Ni-Cr waste |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392331B (en) * | 2008-10-10 | 2010-08-25 | 建德市新安江镍合金有限公司 | Smelting technique for processing nickel ore by rotary kiln |
| CN105349801A (en) * | 2015-10-10 | 2016-02-24 | 中国钢研科技集团有限公司 | Method for chromium slag co-processing by means of smelting of laterite-nickel ores through ore-smelting electric furnace |
| CN106755981A (en) * | 2016-11-25 | 2017-05-31 | 江苏省沙钢钢铁研究院有限公司 | A kind of method that utilization iron ore mine produces metallized pellet |
| CN107236861A (en) * | 2017-05-08 | 2017-10-10 | 浙江特力再生资源有限公司 | A kind of method that utilization industrial residue produces stainless steel smelting sintering deposit |
-
2006
- 2006-04-25 CN CN 200610039993 patent/CN1847421A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392331B (en) * | 2008-10-10 | 2010-08-25 | 建德市新安江镍合金有限公司 | Smelting technique for processing nickel ore by rotary kiln |
| CN105349801A (en) * | 2015-10-10 | 2016-02-24 | 中国钢研科技集团有限公司 | Method for chromium slag co-processing by means of smelting of laterite-nickel ores through ore-smelting electric furnace |
| CN105349801B (en) * | 2015-10-10 | 2017-09-29 | 中国钢研科技集团有限公司 | A kind of method that chromium slag is put in ore-smelting electric furnace smelting red clay nickel ore coexistence |
| CN106755981A (en) * | 2016-11-25 | 2017-05-31 | 江苏省沙钢钢铁研究院有限公司 | A kind of method that utilization iron ore mine produces metallized pellet |
| CN106755981B (en) * | 2016-11-25 | 2019-07-19 | 江苏省沙钢钢铁研究院有限公司 | A method of metallized pellet is produced using iron ore mine |
| CN107236861A (en) * | 2017-05-08 | 2017-10-10 | 浙江特力再生资源有限公司 | A kind of method that utilization industrial residue produces stainless steel smelting sintering deposit |
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