CN107805707A - A kind of cold press composite pellet and preparation method thereof - Google Patents
A kind of cold press composite pellet and preparation method thereof Download PDFInfo
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- CN107805707A CN107805707A CN201711074574.3A CN201711074574A CN107805707A CN 107805707 A CN107805707 A CN 107805707A CN 201711074574 A CN201711074574 A CN 201711074574A CN 107805707 A CN107805707 A CN 107805707A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to stainless steel smelting technical field, and in particular to a kind of cold press composite pellet and preparation method thereof.Technical scheme is to include the raw material composition of following mass fraction：60~95 parts of nickel pig iron powder, 0~40 part of dedusting ash of stainless steel, 0~15 part of binding agent.Specific preparation method：The first step：Calcium oxide therein is subjected to resolution processing by heating water or high-temperature steam by the dedusting ash of stainless steel of above-mentioned mass fraction, calcium oxide resolution is turned into calcium hydroxide；Second step：The dedusting ash of stainless steel of nickel pig iron powder, binding agent and the first step of above-mentioned mass fraction after resolution is handled is mixed and stirred；3rd step：Appropriate water is added during stirring；4th step：The mixture that 3rd step is stirred is suppressed as cold press composite pellet finished product by press device.The present invention has the advantages that nickel pig iron powder processing cost is low, harmless recycling dedusting ash of stainless steel.
Description
Technical field
The invention belongs to stainless steel smelting technical field, and in particular to a kind of cold press composite pellet and preparation method thereof.
Background technology
China is stainless steel big producer, a large amount of in producing stainless steel process to use metallic nickel as primary raw material, gold
The use cost of category nickel directly influences the smelting cost of stainless steel.Begin to use a kind of New Nickel pig iron smelting in the world at present
Refining technology, the smelting cost of the nickel pig iron is considerably reduced, reduced for stainless steel smelting cost and provide possibility.But this is new
The nickel pig iron that nickel pig iron smelting technology is produced is powdery, and stainless steel smelting can not be used directly, it is necessary to add this nickel pig iron
Work, which turns into bulk, to be used, and be that the process technology of this bulk nickel pig iron turns into key.It can be produced in stainless steel smelting process
A large amount of dedusting ash, due to containing plurality of heavy metal in dedusting ash, directly discharge can produce serious environmental pollution, while the dedusting
It is larger containing substantial amounts of useful component recovery value in ash, but the recovery and reuse technology of the dedusting ash is to work as the previous item world
Problem, how to handle is a problem that many mechanisms actively research and develop.By we for many years constantly explore by the nickel pig iron with it is stainless
It is fine that steel dedusting ash combines progress treatment effect.
The content of the invention
The purpose of the present invention is the problem of presence for above-mentioned technology, and provides a kind of cold press composite pellet and its preparation side
Method.
To achieve the above object, the technical solution used in the present invention is：
A kind of cold press composite pellet, wherein, the raw material for including following mass fraction forms：
60~95 parts of nickel pig iron powder, 0~40 part of dedusting ash of stainless steel, 0~15 part of binding agent.
Preferably, described binding agent is any one in cement, amylan.
Preferably, described nickel pig iron powder is a kind of nickel that nickel minerals directly smelting is index required by meeting stainless steel smelting
Pig iron powder；
Preferably, a kind of dedusting ash that described dedusting ash is emitted by stainless steel smelting.
A kind of method for preparing the cold press composite pellet of the present invention：Wherein, comprise the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：By the stainless steel of nickel pig iron powder, binding agent and the first step of above-mentioned mass fraction after resolution is handled
Dedusting ash is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Preferably, described binding agent is any one in cement, amylan.
Preferably, described nickel pig iron powder is a kind of nickel that nickel minerals directly smelting is index required by meeting stainless steel smelting
Pig iron powder；A kind of dedusting ash that described dedusting ash is emitted by stainless steel smelting.
A kind of cold press composite pellet, wherein, the raw material for including following mass fraction forms：
60~95 parts of nickel pig iron powder, 0~40 part of dedusting ash of stainless steel.
A kind of method for preparing the cold press composite pellet, wherein, comprise the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：Dedusting ash of stainless steel of the nickel pig iron powder of above-mentioned mass fraction with the first step after resolution is handled is entered
Row is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
A kind of cold press composite pellet, wherein, the raw material for including following mass fraction forms：
60~95 parts of nickel pig iron powder, 0~15 part of binding agent.
A kind of method for preparing the cold press composite pellet, wherein, comprise the following steps：
The first step：Nickel pig iron powder, the binding agent of above-mentioned mass fraction are mixed and stirred；
Second step：Appropriate water is added during stirring；
3rd step：The mixture that second step is stirred by press device suppressed as cold press composite pellet into
Product.
Compared with prior art, the present invention has advantages below and good effect：
Nickel pig iron powder due to its physical property determine in the case where not adding other binding agents can not extrusion forming,
When dedusting ash of stainless steel can use as binding agent completely after resolution, at the same can by dedusting ash of stainless steel it is contained as
The element of the various great recovery values such as nickel, chromium, iron, carbon is handled together while nickel pig iron powder is handled, both by nickel pig iron powder
Cold press composite pellet is processed into, reduces nickel pig iron powder processing cost, while harmlessly recycled dedusting ash of stainless steel.For
Ensure that the normal temperature strength of handled nickel pig iron cold press composite pellet adds a small amount of binding agent in processing procedure.
Embodiment
Embodiment 1
A kind of cold press composite pellet described in the present embodiment, wherein, the raw material for including following mass fraction forms：
60 parts of nickel pig iron powder, 25 parts of dedusting ash of stainless steel, 15 parts of amylan.
The specific preparation method of the present embodiment：Wherein, comprise the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；Calcium hydroxide after resolution has certain cementation, utilizes it
Caking property is so that nickel pig iron powder be bonded together under a certain pressure；
Second step：By the stainless steel of nickel pig iron powder, amylan and the first step of above-mentioned mass fraction after resolution is handled
Dedusting ash is mixed and stirred；The initial strength for the cold press composite pellet that addition amylan is processed by guarantee.
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Embodiment 2
A kind of cold press composite pellet described in the present embodiment, wherein, the raw material for including following mass fraction forms：
85 parts of nickel pig iron powder, 13 parts of dedusting ash of stainless steel, 2 parts of amylan.
The specific preparation method of the present embodiment：Wherein, comprise the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：By the stainless steel of nickel pig iron powder, amylan and the first step of above-mentioned mass fraction after resolution is handled
Dedusting ash is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Embodiment 3
A kind of cold press composite pellet described in the present embodiment, wherein, the raw material for including following mass fraction forms：
65 parts of nickel pig iron powder, 30 parts of dedusting ash of stainless steel, 5 parts of amylan.
The specific preparation method of the present embodiment：Comprise the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：By the stainless steel of nickel pig iron powder, amylan and the first step of above-mentioned mass fraction after resolution is handled
Dedusting ash is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Embodiment 4
A kind of cold press composite pellet described in the present embodiment, wherein, the raw material for including following mass fraction forms：
95 parts of nickel pig iron powder, 2 parts of dedusting ash of stainless steel, 3 parts of amylan.
The specific preparation method of the present embodiment：Comprise the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：By the stainless steel of nickel pig iron powder, amylan and the first step of above-mentioned mass fraction after resolution is handled
Dedusting ash is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Nickel pig iron powder described in embodiment 1 to 4 is that nickel minerals is directly smelted to meet index required by stainless steel smelting
A kind of nickel pig iron powder；
A kind of dedusting ash that described dedusting ash is emitted by stainless steel smelting.
Described amylan can also be that cement substitutes.
Embodiment 5
A kind of cold press composite pellet described in the present embodiment, include the raw material composition of following mass fraction：
60 parts of nickel pig iron powder, 40 parts of dedusting ash of stainless steel.
The specific preparation method of the present embodiment, comprises the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：Dedusting ash of stainless steel of the nickel pig iron powder of above-mentioned mass fraction with the first step after resolution is handled is entered
Row is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Embodiment 6
A kind of cold press composite pellet described in the present embodiment, include the raw material composition of following mass fraction：
85 parts of nickel pig iron powder, 15 parts of dedusting ash of stainless steel.
The specific preparation method of the present embodiment, comprises the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：Dedusting ash of stainless steel of the nickel pig iron powder of above-mentioned mass fraction with the first step after resolution is handled is entered
Row is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Embodiment 7
A kind of cold press composite pellet described in the present embodiment, include the raw material composition of following mass fraction：
70 parts of nickel pig iron powder, 30 parts of dedusting ash of stainless steel.
The specific preparation method of the present embodiment, comprises the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：Dedusting ash of stainless steel of the nickel pig iron powder of above-mentioned mass fraction with the first step after resolution is handled is entered
Row is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Embodiment 8
A kind of cold press composite pellet described in the present embodiment, include the raw material composition of following mass fraction：
95 parts of nickel pig iron powder, 5 parts of dedusting ash of stainless steel.
The specific preparation method of the present embodiment, comprises the following steps：
The first step：By the dedusting ash of stainless steel of above-mentioned mass fraction by heating water or high-temperature steam by calcium oxide therein
Resolution processing is carried out, calcium oxide resolution is turned into calcium hydroxide；
Second step：Dedusting ash of stainless steel of the nickel pig iron powder of above-mentioned mass fraction with the first step after resolution is handled is entered
Row is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：By the mixture that the 3rd step is stirred by press device suppressed as cold press composite pellet into
Product.
Nickel pig iron powder described in embodiment 5 to 8 is that nickel minerals is directly smelted to meet index required by stainless steel smelting
A kind of nickel pig iron powder；
A kind of dedusting ash that described dedusting ash is emitted by stainless steel smelting.
Embodiment 9
A kind of cold press composite pellet described in the present embodiment, include the raw material composition of following mass fraction：
85 parts of nickel pig iron powder, 15 parts of cement.
The specific preparation method of the present embodiment, comprises the following steps：
The first step：Nickel pig iron powder, the cement of above-mentioned mass fraction are mixed and stirred；
Second step：Appropriate water is added during stirring；
3rd step：The mixture that second step is stirred by press device suppressed as cold press composite pellet into
Product.
Embodiment 10
A kind of cold press composite pellet described in the present embodiment, include the raw material composition of following mass fraction：
95 parts of nickel pig iron powder, 5 parts of cement.
The specific preparation method of the present embodiment, comprises the following steps：
The first step：Nickel pig iron powder, the cement of above-mentioned mass fraction are mixed and stirred；
Second step：Appropriate water is added during stirring；
3rd step：The mixture that second step is stirred by press device suppressed as cold press composite pellet into
Product.
Nickel pig iron powder described in embodiment 9 to 10 is that nickel minerals is directly smelted to meet index required by stainless steel smelting
A kind of nickel pig iron powder；
A kind of dedusting ash that described dedusting ash is emitted by stainless steel smelting.
Described cement can also be that amylan substitutes.
To show the performance of cold press composite pellet of the embodiment of the present invention, as shown in table 1：
The cold press composite pellet performance indications of table 1.
| Sequence number | Project name | Technical indicator |
| 1 | Normal temperature strength | ≥9N/mm2 |
| 2 | Elevated temperature strength | >=800 DEG C, do not split, be not broken |
Claims (10)
1. a kind of cold press composite pellet, it is characterized in that, the raw material for including following mass fraction forms：
60~95 parts of nickel pig iron powder, 0~40 part of dedusting ash of stainless steel, 0~15 part of binding agent.
2. a kind of cold press composite pellet according to claim 1, it is characterized in that, described binding agent is cement, amylan
In any one.
3. a kind of cold press composite pellet according to claim 1, it is characterized in that, described nickel pig iron powder is the direct smelting of nickel minerals
Refine as a kind of nickel pig iron powder of index required by meeting stainless steel smelting；Described dedusting ash is emitted by stainless steel smelting
A kind of dedusting ash.
A kind of 4. method for preparing any one of claims 1 to 3 cold press composite pellet：It is characterized in that comprise the following steps：
The first step：The dedusting ash of stainless steel of above-mentioned mass fraction is carried out calcium oxide therein by heating water or high-temperature steam
Resolution is handled, and calcium oxide resolution is turned into calcium hydroxide；
Second step：By the stainless steel dedusting of nickel pig iron powder, binding agent and the first step of above-mentioned mass fraction after resolution is handled
Ash is mixed and stirred；
3rd step：Appropriate water is added during stirring；
4th step：The mixture that 3rd step is stirred is suppressed as cold press composite pellet finished product by press device.
5. a kind of preparation method of cold press composite pellet according to claim 4, it is characterized in that, described binding agent is water
Any one in mud, amylan.
6. a kind of preparation method of cold press composite pellet according to claim 4, it is characterized in that, described nickel pig iron powder is
Nickel minerals directly smelting is a kind of nickel pig iron powder of index required by meeting stainless steel smelting；Described dedusting ash is stainless steel smelting
A kind of dedusting ash emitted.
7. a kind of cold press composite pellet according to claim 1, it is characterized in that, include the raw material group of following mass fraction
Into：
60~95 parts of nickel pig iron powder, 0~40 part of dedusting ash of stainless steel.
8. a kind of method for preparing cold press composite pellet described in claim 7, it is characterized in that, comprise the following steps：
The first step：The dedusting ash of stainless steel of above-mentioned mass fraction is carried out calcium oxide therein by heating water or high-temperature steam
Resolution is handled, and calcium oxide resolution is turned into calcium hydroxide；
Second step：Dedusting ash of stainless steel of the nickel pig iron powder of above-mentioned mass fraction with the first step after resolution is handled is mixed
Merging stirs；
3rd step：Appropriate water is added during stirring；
4th step：The mixture that 3rd step is stirred is suppressed as cold press composite pellet finished product by press device.
9. a kind of cold press composite pellet according to claim 1, it is characterized in that, include the raw material group of following mass fraction
Into：
60~95 parts of nickel pig iron powder, 0~15 part of binding agent.
10. a kind of method for preparing cold press composite pellet described in claim 9, it is characterized in that, comprise the following steps：
The first step：Nickel pig iron powder, the binding agent of above-mentioned mass fraction are mixed and stirred；
Second step：Appropriate water is added during stirring；
3rd step：The mixture that second step is stirred is suppressed as cold press composite pellet finished product by press device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711074574.3A CN107805707A (en) | 2017-11-06 | 2017-11-06 | A kind of cold press composite pellet and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711074574.3A CN107805707A (en) | 2017-11-06 | 2017-11-06 | A kind of cold press composite pellet and preparation method thereof |
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| CN107805707A true CN107805707A (en) | 2018-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118300A (en) * | 2020-01-19 | 2020-05-08 | 中冶宝钢技术服务有限公司 | Dust removal ball pressing forming method |
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| CN101629237A (en) * | 2009-07-30 | 2010-01-20 | 山西太钢不锈钢股份有限公司 | Method for utilizing stainless steel dust and laterite as iron making materials |
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| CN102212678A (en) * | 2011-05-08 | 2011-10-12 | 山西太钢不锈钢股份有限公司 | Method for manufacturing stainless steel dedusting ash pressure ball |
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2017
- 2017-11-06 CN CN201711074574.3A patent/CN107805707A/en not_active Withdrawn
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| CN101067180A (en) * | 2007-06-09 | 2007-11-07 | 山西太钢不锈钢股份有限公司 | Chronium-nickel alloy element electric furnace smelting recovery method from stainless steel dedusting ash |
| CN101629237A (en) * | 2009-07-30 | 2010-01-20 | 山西太钢不锈钢股份有限公司 | Method for utilizing stainless steel dust and laterite as iron making materials |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111118300A (en) * | 2020-01-19 | 2020-05-08 | 中冶宝钢技术服务有限公司 | Dust removal ball pressing forming method |
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Application publication date: 20180316 |