CN101491831B - Forming method of ferro-silicon alloy powder - Google Patents
Forming method of ferro-silicon alloy powder Download PDFInfo
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- CN101491831B CN101491831B CN2008100567454A CN200810056745A CN101491831B CN 101491831 B CN101491831 B CN 101491831B CN 2008100567454 A CN2008100567454 A CN 2008100567454A CN 200810056745 A CN200810056745 A CN 200810056745A CN 101491831 B CN101491831 B CN 101491831B
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Abstract
The invention discloses a method for forming ferro-silicon alloy powder. The method comprises: mixing 90 to 110 portions of ferro-silicon alloy powdered scrap, 3 to 5 portions of adhesive, 0.5 to 1 portion of curing agent, 0.15 to 1 portion of crosslinking agent and 0.5 to 1 portion of initiator according to certain steps; and releasing heat through reaction between unformed silicon in the ferro-silicon powdered scrap and the initiator, activating the curing agent to reinforce the reaction, and allowing the released heat to promote crosslinking of the adhesive, so that finished products are quickly dried and consolidated and the compressive strength of the finished products can reach between 2,200 and 3,200 newtons within 0.25 to 3 hours. The formed ferro-silicon alloy powdered scrap has high grade, small adhesive addition and high wet bulb strength.
Description
Technical field
The present invention relates to a kind of metallurgical raw material of regeneration, relate in particular to a kind of forming method of ferro-silicon alloy powder, belong to field of metallurgy.
Background technology
Ferroalloy (ferrosilicon, fero-manganesesilicon etc.) is widely used in steel-making and casting field.Different application purposes has different granularity requirements (10-350mm) to alloy, thus the ferroalloy ingot casting dispatch from the factory and practical application in need carry out fragmentation, screening, the big appointment of ingot casting per ton produces about particle, break flour below about 7% 5 millimeters in this process.The method of handling at present these break flours mainly contains: (1) handles (per ton be lower than thousand yuan of finished product valence mumbers) at a low price by solid waste; (2) melt down melting, this not only increases energy consumption cost also can worsen the working of a furnace, also can cause economic loss when serious; (3) use with finished product,, be difficult to operation during production application owing to reasons such as bulk density are little; (4), make the product that conforms with application requirements fully with the break flour moulding.
Waterglass (sodium metasilicate or potassium silicate) is generally used in the moulding of present various iron alloy powders, and drying forms.This method advantage is that cost is low medium temperature intensity preferably, but content of binder big (10%-17%), its result: the one, seriously reduce the alloy grade; The 2nd, easy-formation not, wet bulb intensity is extremely low, and the 3rd, it is too many to worsen normal smelting factor.
Summary of the invention
Technical problem to be solved by this invention provides a kind of new ferro-silicon alloy powder forming method, this forming method content of binder few (4%～5%), and wet bulb intensity height (1 meter fall＞3 times), heating is solidified naturally, and rate of drying is fast.
Technical problem to be solved by this invention is achieved through the following technical solutions:
A kind of forming method of ferro-silicon alloy powder may further comprise the steps:
(1), take by weighing each component by following weight portion:
Antaciron break flour: 90～110 parts
Adhesive: 3～5 parts
Curing agent: 0.5～1 part
Crosslinking agent: 0.15～1 part
Initator: 0.5～1 part
Water: 6～8 parts;
(2), with ferro-silicon alloy powder, adhesive, curing agent abundant mixing in machine,massing, compound 1, standby;
(3), crosslinking agent, initator are dissolved in the water, the aqueous solution, standby;
(4), the resulting aqueous solution of step (3) is sprayed on the compound 1 while stirring, compound 2;
(5), with compound 2 make-up machine moulding, pile up naturally after the moulding, be finished product.
In the said method, the weight portion of each component of step (1) is preferably: 100 parts of Antaciron break flours, and 4 parts of adhesive, 0.6 part in curing agent, 0.5 part of crosslinking agent, initator: 0.5 part, 7 parts in water;
Wherein, described adhesive is the water soluble polymer organic matter that contains hydroxyl, aldehyde radical or carboxyl functional group; The preferred mixture formed by arbitrary proportion of any one or more in polyvinyl acetate, polyvinyl alcohol, polyacrylamide, sodium carboxymethylcellulose;
Described curing agent is preferably prodan or sodium phosphate trimer;
Described crosslinking agent is preferably N ', N-methylene-bisacrylamide, epoxy chloroethanes or epoxychloropropane;
Described initator is preferably sodium or KP1, modulus 1～3;
Mixing time described in the step (4) is preferably 5～10 minutes;
Moulding described in the step (5) is with make-up machine compound 2 to be caused ball-type or piece type; The described accumulation naturally is preferably accumulation 0.25～3 hour.
Used various raw materials can obtain from domestic and international Chemical market among the present invention, and its specification meets industry standard and gets final product.
Mechanism of the present invention is: unformed silicon in the ferrosilicon powder and initiator for reaction heat release, activate curing agent and make further aggravation of reaction, liberated heat promotes that adhesive is crosslinked, thereby it is fixed to make finished product be able to rapid draing, and finished product compression strength can reach 2200～3200 newton (N) in 0.25～3 hour.
The specific embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage of the present invention and characteristics will be more clear along with description.But these embodiment only are exemplary, scope of the present invention are not constituted any restriction.It will be understood by those skilled in the art that and down can make amendment or replace without departing from the spirit and scope of the present invention, but these modifications and replacing all fall within the scope of protection of the present invention the details of technical solution of the present invention and form.
Embodiment 1
Take by weighing following each material (unit: kg): Antaciron break flour 100, polyvinyl acetate 4, prodan 0.6, N ', 0.5 part of N-methylene-bisacrylamide, sodium silicate (modulus 2～3) 0.5, water 7 by weight; With Antaciron break flour, polyvinyl acetate and prodan (the powerful stirring conveyor of common vertical mortar mixer or horizontal spiral) abundant mixing in power's mixer, get compound 1, standby: with crosslinking agent N ', after N-methylene-bisacrylamide, initator sodium silicate are dissolved in the water, be sprayed on the compound 1 while stirring, stirred 8 minutes, and got compound 2; Compound 2 usefulness make-up machines are caused ball-type, piled up 2 hours naturally after the moulding, promptly.Present embodiment is made finished product detect, its chemical composition sees Table 1.
The chemical composition testing result of table 1 product
After testing, the compression strength of product can reach 2200～3200 newton (N), wet bulb intensity height (1 meter fall＞3 times)
Embodiment 2
Take by weighing following each material (unit: kg): Antaciron break flour 90, polyacrylamide 3, sodium phosphate trimer 0.5, epoxychloropropane 0.15, KP1 (modulus 2～3) 0.5, water 6 by weight; With Antaciron break flour, polyacrylamide and sodium phosphate trimer (the powerful stirring conveyor of common vertical mortar mixer or horizontal spiral) abundant mixing in homogenizer, get compound 1, standby: after crosslinking agent epoxychloropropane, initator KP1 be dissolved in the water, be sprayed on the compound 1 while stirring, stirred 5 minutes, and got compound 2; Compound 2 usefulness make-up machines are caused ball-type, piled up 3 hours naturally after the moulding, promptly.
Present embodiment is made finished product detect, its chemical composition sees Table 2.
The chemical composition testing result of table 2 product
After testing, the compression strength of product can reach 2200～3200 newton (N), wet bulb intensity height (1 meter fall＞3 times).
Embodiment 3
Take by weighing following each material (unit: kg): Antaciron break flour 110, sodium carboxymethylcellulose 5, prodan 1, N ', N-methylene-bisacrylamide 1, sodium silicate (modulus 2～3) 1, water 8 by weight; With Antaciron break flour, sodium carboxymethylcellulose and prodan (the powerful stirring conveyor of common vertical mortar mixer or horizontal spiral) abundant mixing in homogenizer, get compound 1, standby: with crosslinking agent N ', after N-methylene-bisacrylamide, initator sodium silicate are dissolved in the water, be sprayed on the compound 1 while stirring, stirred 10 minutes, and got compound 2; Compound 2 usefulness make-up machines are caused the piece type, piled up 0.25 hour naturally after the moulding, promptly.Present embodiment is made finished product detect, its chemical composition sees Table 3.
The chemical composition testing result of table 3 product
After testing, the compression strength of product can reach 2200～3200 newton (N), wet bulb intensity height (1 meter fall＞3 times).
Claims (5)
1. the forming method of a ferro-silicon alloy powder comprises:
(1), takes by weighing each component by following weight portion: 90～110 parts of Antaciron break flours, 3～5 parts of adhesive, 0.5～1 part in curing agent, 0.15～1 part of crosslinking agent, 6～8 parts in 0.5～1 part of initator and water;
(2), with ferro-silicon alloy powder, adhesive, curing agent abundant mixing in machine,massing, compound 1, standby;
(3), crosslinking agent, initator are dissolved in the water, the aqueous solution, standby;
(4), the resulting aqueous solution of step (3) is sprayed on the compound 1 while stirring, compound 2;
(5), with compound 2 make-up machine moulding, pile up naturally after the moulding, promptly;
Wherein, described adhesive is more than one mixtures formed by arbitrary proportion in polyvinyl acetate, polyvinyl alcohol, polyacrylamide, the sodium carboxymethylcellulose;
Described curing agent is prodan or sodium phosphate trimer;
Described crosslinking agent is N ', N-methylene-bisacrylamide, epoxy chloroethanes or epoxychloropropane;
Described initator is sodium or KP1, modulus 1～3.
2. according to the forming method of claim 1, it is characterized in that the weight portion of each component is: 100 parts of Antaciron break flours, 4 parts of adhesive, 0.6 part in curing agent, 0.5 part of crosslinking agent, 0.5 part of initator, 7 parts in water.
3. according to the forming method of claim 1 or 2, it is characterized in that: the mixing time described in the step (4) is 5～10 minutes.
4. according to the forming method of claim 1 or 2, it is characterized in that: the moulding described in the step (5) is with make-up machine compound 2 to be caused ball-type or piece type.
5. according to the forming method of claim 1 or 2, it is characterized in that: the described natural accumulation time is 0.25～3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100567454A CN101491831B (en) | 2008-01-24 | 2008-01-24 | Forming method of ferro-silicon alloy powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100567454A CN101491831B (en) | 2008-01-24 | 2008-01-24 | Forming method of ferro-silicon alloy powder |
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| Publication Number | Publication Date |
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| CN101491831A CN101491831A (en) | 2009-07-29 |
| CN101491831B true CN101491831B (en) | 2011-02-02 |
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| CN2008100567454A Expired - Fee Related CN101491831B (en) | 2008-01-24 | 2008-01-24 | Forming method of ferro-silicon alloy powder |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768664B (en) * | 2010-01-11 | 2012-09-05 | 北京中科圣宝荷新材料科技有限公司 | Binder for metal powder ore cold consolidation so as to substitute for sinter ore and application method thereof |
| CN102451908A (en) * | 2010-10-29 | 2012-05-16 | 惠州万磁电子有限公司 | Insulating iron powder and production method thereof |
| CN102418031A (en) * | 2011-12-06 | 2012-04-18 | 常熟市碧溪新城特种机械厂 | Silicon-iron alloy and manufacturing method thereof |
| CN103667692B (en) * | 2014-01-02 | 2016-01-27 | 嘉峪关市园通新型保温材料有限责任公司 | A kind of combined Fluorspar Powder pelletizing binder and application thereof |
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