CN103667692B - A kind of combined Fluorspar Powder pelletizing binder and application thereof - Google Patents

A kind of combined Fluorspar Powder pelletizing binder and application thereof Download PDF

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Publication number
CN103667692B
CN103667692B CN201410000621.XA CN201410000621A CN103667692B CN 103667692 B CN103667692 B CN 103667692B CN 201410000621 A CN201410000621 A CN 201410000621A CN 103667692 B CN103667692 B CN 103667692B
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inorganic adhesive
organic binder
fluorspar powder
massfraction
supersaturated solution
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CN201410000621.XA
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Chinese (zh)
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CN103667692A (en
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张凤林
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嘉峪关市园通新型保温材料有限责任公司
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Abstract

A kind of combined Fluorspar Powder pelletizing binder and application thereof, combined Fluorspar Powder pelletizing binder, be made up of supersaturated solution two portions of organic binder bond and inorganic adhesive, its massfraction is: described organic binder bond 15%-20%, the supersaturated solution 80%-85% of described inorganic adhesive; Described organic binder bond is one or more the mixture in Xylo-Mucine, sodium starch glycolate, Vltra tears, hydroxypropyl starch ether, hydroxypropylguar gum, pre-gelatinized starch, re-dispersible glue powder, polyvinyl alcohol; In the supersaturated solution of described inorganic adhesive, inorganic adhesive is the one in Starso and water glass, and its massfraction is 50%-60%.The Fluorspar Powder pelletizing wet bulb water content 5%-10% utilizing the present invention program to produce, balling ratio is more than 96%, and percentage of damage 1%-1.5%, pelletizing crushing strength is good.

Description

A kind of combined Fluorspar Powder pelletizing binder and application thereof
Technical field
The invention belongs to STEELMAKING PRODUCTION field, be specifically related to a kind of for the tackiness agent of Fluorspar Powder balling-up of colding pressing and the application in Fluorspar Powder cold pressing forming process thereof.
Background technology
Natural Fluorite is fusing assistant important in smelting iron and steel, and it can reduce slag melting, improves slag fluidity, strengthens the surface reaction ability between molten steel and slag, improves dephosphorization, desulfuration efficiency, is one of furnace charge indispensable in smelting technology.Every melting one ton of iron, needs 6 ~ 9 kilograms, fluorite according to statistics, often produces one ton of steel, needs 2 ~ 9 kilograms, fluorite.In recent years, higher-grade fluorite raw ore is exploited in a large number, and reserves constantly reduce, and can not meet smelter demand, and hold at high price, cause steel-making cost to rise, industry uses Fluorspar Powder instead one after another, but metallurgy industry limits by technology condition, Fluorspar Powder can not directly be entered stove application by steel mill, fine ore pressure ball technology is operated and gives birth to, and fluorite cold-curing pelletizing, by smelter Successful utilization, replaces lump ore substantially.
Fluorspar Powder pelletizing binder is the important source material in Fluorspar Powder solidification balling technique, often use sodium metasilicate solution, commercial water glass, water soluble phenolic glue as Fluorspar Powder pelletizing binder in the market, in general, use organic tackiness agent, product physical strength is high but poor heat stability, water-repellancy are poor; Use inorganic adhesive, often cause when colloid solid content meets the demands wet bulb moisture large, affect the physical strength of the finished product, percentage of damage, and inorganic adhesive add the ash content adding product, add the grade that too much can affect Fluorspar Powder pelletizing.The production of Fluorspar Powder pelletizing is also relevant with its production technique, and the Fluorspar Powder pelletizing ubiquity wet bulb initial strength of producing at present is poor, and balling ratio is low, the problem that finished ball percentage of damage is high.
Summary of the invention
The present invention is directed to deficiency of the prior art, a kind of combined Fluorspar Powder pelletizing binder comprising organic binder bond and inorganic adhesive is provided, and the application of described Fluorspar Powder pelletizing binder is provided.
Technical scheme of the present invention: a kind of combined Fluorspar Powder pelletizing binder, be made up of supersaturated solution two portions of organic binder bond and inorganic adhesive, its massfraction is: described organic binder bond 15%-20%, the supersaturated solution 80%-85% of described inorganic adhesive; Described organic binder bond is one or more the mixture in Xylo-Mucine, sodium starch glycolate, Vltra tears, hydroxypropyl starch ether, hydroxypropylguar gum, pre-gelatinized starch, re-dispersible glue powder, polyvinyl alcohol; The supersaturated solution of described inorganic adhesive be at 35 DEG C of-60 DEG C of temperature, be scattered in by described inorganic adhesive, solidifying agent, initiator and linking agent the aqueous solution formed in water, described inorganic adhesive is the one in Starso and water glass, and the massfraction of described inorganic adhesive is 50%-60%.
Further, solidifying agent described in the supersaturated solution of described inorganic adhesive is Sodium Silicofluoride, and described initiator is the one in ammonium persulphate and methylene-succinic acid, and described linking agent is the one in N,N methylene bis acrylamide and polyacrylamide; Massfraction in described inorganic adhesive supersaturated solution is: described solidifying agent 1.5%-2.5%, described initiator 0.3%-0.4%, described linking agent 0.5%-0.6%.
The one of described organic binder component and massfraction is chosen as: described Vltra tears 30%-70%, described hydroxypropyl starch ether 30%-70%.
Another of described organic binder component and massfraction is chosen as: Xylo-Mucine 10%-40%, sodium starch glycolate 20%-60%, hydroxypropylguar gum 20%-60%.
Another of described organic binder component and massfraction is chosen as: Vltra tears 10%-40%, sodium starch glycolate 20%-60%, polyvinyl alcohol 20%-60%.
The another kind of described organic binder component and massfraction is chosen as: described organic binder component and massfraction are: Vltra tears 5%-25%, pre-gelatinized starch 30%-60%, polyvinyl alcohol 15%-45%.
The application of combined Fluorspar Powder pelletizing binder in Fluorspar Powder cold pressing forming process, comprises the steps:
(1) Fluorspar Powder is added stirrer, moisture content 0.6%-2.2% in described Fluorspar Powder, add organic binder bond, be uniformly mixed 2-10 minute, described organic binder bond is one or more the mixture in Xylo-Mucine, sodium starch glycolate, Vltra tears, hydroxypropyl starch ether, hydroxypropylguar gum, pre-gelatinized starch, re-dispersible glue powder, polyvinyl alcohol;
(2) inorganic adhesive supersaturated solution is added, control organic binder bond and the total add-on of inorganic adhesive supersaturated solution account for massfraction≤5 of total raw material amount, stir, send into chilling press compacting balling-up, the supersaturated solution of described inorganic adhesive be at 35 DEG C of-60 DEG C of temperature, be scattered in by described inorganic adhesive, solidifying agent, initiator and linking agent the aqueous solution formed in water, described inorganic adhesive is the one in Starso and water glass, and the massfraction of described inorganic adhesive is 50%-60%;
(3) loft drier is sent into, 150 DEG C-200 DEG C, dry 30-60 minute.
Further, described in the supersaturated solution of described inorganic adhesive, Sodium Silicofluoride selected by solidifying agent, and the one in ammonium persulphate and methylene-succinic acid selected by described initiator, and the one in N,N methylene bis acrylamide and polyacrylamide selected by described linking agent; When preparing described inorganic adhesive supersaturated solution, Mass Control mark is: described solidifying agent 1.5%-2.5%, described initiator 0.3%-0.4%, described linking agent 0.5%-0.6%.
Preferably, described organic binder particle size attrition process is to 600-1200 order.
The solution of the present invention, select organic binder bond and inorganic adhesive supersaturated solution with the use of, use front organic binder bond and inorganic adhesive supersaturated solution to be two portions separately.Normally used sodium metasilicate solution and sodium silicate solution, comprise commercially available water glass, and its Solute mass fraction is less than 50%, do not reach the requirement of inorganic adhesive supersaturated solution in the present invention.The preparation method of the supersaturated solution of inorganic adhesive is: inorganic adhesive and solidifying agent Sodium Silicofluoride are added to the water, Heating temperature arrives 60 DEG C, stirs and makes it all dissolve, then add described initiator and described linking agent, stir after forming single solution, heat preservation for standby use.Solution uses and keeps temperature 35 DEG C-40 DEG C, otherwise can produce recrystallize, heats to 50 DEG C when there is recrystallize, and crystallization disappears.
Beneficial effect: the organic binder bond 1, selected, there are bonding, thickening and dredge the effect of moisture, the interparticle Jiao Qiao of Fluorspar Powder can be increased, strengthen the physical strength of Fluorspar Powder pelletizing wet bulb, technological operation is more simple, be conducive to scale operation, improve the physical strength of balling ratio and finished product simultaneously.
2, utilize the massfraction 50%-60% of the supersaturated solution-inorganic adhesive of inorganic adhesive, adhesive effect does not well bring excess moisture into again, and the water content of wet bulb is controlled in 5%-10%.
3, tackiness agent adds the grade too much having a strong impact on Fluorspar Powder pelletizing, use organic binder bond and inorganic adhesive with the use of, under the prerequisite ensureing bonding quality, the always amount of being added into≤5%, product ash content is few, and grade is higher.
4, balling ratio is more than 96%, wet bulb list ball ultimate compression strength 150-200N, anti-drop intensity >=2 meter, finished ball water content 2%, percentage of damage 1%-1.5%, finished ball list ball ultimate compression strength 1500N ± 100, anti-drop intensity >=10 meter.
Embodiment
Below utilize a kind of combined Fluorspar Powder pelletizing of the present invention and be applied in illustrating in Fluorspar Powder pellet formation.
Embodiment one
Fluorite fine ore: 500kg water content 1%; Organic binder bond (weight ratio): Vltra tears and hydroxypropyl starch ether each 50% all mixed, Ultrafine Grinding is machined to 600-1200 order.
Inorganic adhesive saturated solution: 120kg Starso, 5kg Sodium Silicofluoride are joined in 100kg water, heated and stirred in high speed dispersor, makes supersaturated solution, Heating temperature 60 DEG C, after all dissolving, add methylene-succinic acid 0.8kg, polyacrylamide 1.2kg, stop heating and thermal insulation stand-by.
Fluorspar Powder is added stirrer, adds organic binder bond 5kg, be uniformly mixed 3 minutes, then add the inorganic adhesive supersaturated solution 20kg of preparation, stir, send into chilling press compacting balling-up; Wet bulb sends into loft drier, 200 DEG C, dry 40 minutes.
Effect: wet bulb water content 10%, wet bulb list ball ultimate compression strength 150N-200N; Anti-drop intensity >=2 meter; Balling ratio 97%; Finished ball water content 2%; Pelletizing crushing strength 1500N ± 100N; Anti-drop intensity >=10 meter.
Embodiment two
Fluorite fine ore: 500kg water content 1%; Organic binder bond (weight ratio): Xylo-Mucine 20%, sodium starch glycolate 40%, hydroxypropylguar gum 40% 3 raw material is all mixed, and Ultrafine Grinding is machined to 600-1200 order.
Inorganic adhesive saturated solution: 120kg Starso, 5kg Sodium Silicofluoride are joined in 100kg water, heated and stirred in high speed dispersor, makes supersaturated solution, Heating temperature 60 DEG C, after all dissolving, add methylene-succinic acid 0.8kg, polyacrylamide 1.2kg, stop heating and thermal insulation stand-by.
Fluorspar Powder is added stirrer, adds organic binder bond 4kg, be uniformly mixed 3 minutes, then add the inorganic adhesive supersaturated solution 19kg of preparation, stir, send into chilling press compacting balling-up; Wet bulb sends into loft drier, 200 DEG C, dry 40 minutes.
Effect: wet bulb water content 9%, wet bulb list ball ultimate compression strength 150N-200N; Anti-drop intensity >=2 meter; Balling ratio 97%; Finished ball water content 2%; Single ball ultimate compression strength 1500N ± 100N; Anti-drop intensity >=10 meter.
Embodiment three
Fluorite fine ore: 500kg water content 1%; Organic binder bond (weight ratio): Vltra tears 20%, sodium starch glycolate 40%, polyvinyl alcohol 40% 3 raw material is all mixed, and Ultrafine Grinding is machined to 600-1200 order.
Inorganic adhesive saturated solution: 120kg water glass, 5kg Sodium Silicofluoride are joined in 100kg water, heated and stirred in high speed dispersor, make supersaturated solution, Heating temperature 60 DEG C, ammonium persulphate 0.8kg, N is added after all dissolving, N-methylene-bisacrylamide 1.2kg, stops heating and thermal insulation stand-by.
Fluorspar Powder is added stirrer, adds organic binder bond 4kg, be uniformly mixed 3 minutes, then add the inorganic adhesive supersaturated solution 19kg of described preparation, stir, send into chilling press compacting balling-up; Wet bulb sends into loft drier, 200 DEG C, dry 40 minutes.
Effect: wet bulb water content 9%, wet bulb list ball ultimate compression strength 150N-200N; Anti-drop intensity >=2 meter; Balling ratio 97%; Finished ball water content 2%; Percentage of damage 1%-1.5%; Single ball ultimate compression strength 1500N ± 100N; Anti-drop intensity >=10 meter.
Embodiment four
Fluorite fine ore: 500kg water content 1%; Organic binder bond (weight ratio): Vltra tears 5-15%, pre-gelatinized starch 30-60%, polyvinyl alcohol 10-35% tri-raw material is all mixed, and Ultrafine Grinding is machined to 600-1200 order.
Inorganic adhesive saturated solution: 120kg water glass, 5kg Sodium Silicofluoride are joined in 100kg water, heated and stirred in high speed dispersor, make supersaturated solution, Heating temperature 60 DEG C, ammonium persulphate 0.8kg, N is added after all dissolving, N-methylene-bisacrylamide 1.2kg, stops heating and thermal insulation stand-by.
Fluorspar Powder is added stirrer, adds organic binder bond 4kg, be uniformly mixed 3 minutes, then add the inorganic adhesive supersaturated solution 19kg of described preparation, stir, send into chilling press compacting balling-up; Wet bulb sends into loft drier, 200 DEG C, dry 40 minutes.
Effect: wet bulb water content 9%, wet bulb list ball ultimate compression strength 150N-200N; Anti-drop intensity >=2 meter; Balling ratio 97%; Finished ball water content 2%; Percentage of damage 1%-1.5%; Single ball ultimate compression strength 1500N ± 100N; Anti-drop intensity >=10 meter.

Claims (7)

1. a combined Fluorspar Powder pelletizing binder, be made up of supersaturated solution two portions of organic binder bond and inorganic adhesive, its massfraction is: described organic binder bond 15%-20%, the supersaturated solution 80%-85% of described inorganic adhesive;
Described organic binder bond is one or more the mixture in Xylo-Mucine, sodium starch glycolate, Vltra tears, hydroxypropyl starch ether, hydroxypropylguar gum, pre-gelatinized starch, re-dispersible glue powder, polyvinyl alcohol;
The supersaturated solution of described inorganic adhesive be at 35 DEG C of-60 DEG C of temperature, be scattered in by described inorganic adhesive, solidifying agent, initiator and linking agent the aqueous solution formed in water, described inorganic adhesive is the one in Starso and water glass, described solidifying agent is Sodium Silicofluoride, described initiator is the one in ammonium persulphate and methylene-succinic acid, described linking agent is the one in N,N methylene bis acrylamide and polyacrylamide; Massfraction in described inorganic adhesive supersaturated solution is: described inorganic adhesive 50%-60%, described solidifying agent 1.5%-2.5%, described initiator 0.3%-0.4%, described linking agent 0.5%-0.6%.
2. a kind of combined Fluorspar Powder pelletizing binder as claimed in claim 1, described organic binder component and massfraction are: described Vltra tears 30%-70%, described hydroxypropyl starch ether 30%-70%.
3. a kind of combined Fluorspar Powder pelletizing binder as claimed in claim 1, described organic binder component and massfraction are: described Xylo-Mucine 10%-40%, described sodium starch glycolate 20%-60%, described hydroxypropylguar gum 20%-60%.
4. a kind of combined Fluorspar Powder pelletizing binder as claimed in claim 1, described organic binder component and massfraction are: described Vltra tears 10%-40%, described sodium starch glycolate 20%-60%, described polyvinyl alcohol 20%-60%.
5. a kind of combined Fluorspar Powder pelletizing binder as claimed in claim 1, described organic binder component and massfraction are: described Vltra tears 5%-25%, described pre-gelatinized starch 30%-60%, described polyvinyl alcohol 15%-45%.
6. the application of combined Fluorspar Powder pelletizing binder in Fluorspar Powder cold pressing forming process, comprises the steps:
(1) Fluorspar Powder is added stirrer, moisture content 0.6%-2.2% in described Fluorspar Powder, add organic binder bond, be uniformly mixed 2-10 minute, described organic binder bond is one or more the mixture in Xylo-Mucine, sodium starch glycolate, Vltra tears, hydroxypropyl starch ether, hydroxypropylguar gum, pre-gelatinized starch, re-dispersible glue powder, polyvinyl alcohol;
(2) inorganic adhesive supersaturated solution is added, control organic binder bond and the total add-on of inorganic adhesive supersaturated solution account for massfraction≤5 of total raw material amount, stir, send into chilling press compacting balling-up, the supersaturated solution of described inorganic adhesive be by described inorganic adhesive, solidifying agent, initiator and linking agent are scattered in the aqueous solution formed in water at 35 DEG C of-60 DEG C of temperature, described inorganic adhesive is the one in Starso and water glass, described solidifying agent is Sodium Silicofluoride, described initiator is the one in ammonium persulphate and methylene-succinic acid, described linking agent is N, one in N-methylene-bisacrylamide and polyacrylamide, massfraction in described inorganic adhesive supersaturated solution is: described inorganic adhesive 50%-60%, described solidifying agent 1.5%-2.5%, described initiator 0.3%-0.4%, described linking agent 0.5%-0.6%,
(3) loft drier is sent into, 150 DEG C-200 DEG C, dry 30-60 minute.
7. the application of a kind of combined Fluorspar Powder pelletizing binder as claimed in claim 6 in Fluorspar Powder cold pressing forming process, described organic binder particle size attrition process is to 600-1200 order.
CN201410000621.XA 2014-01-02 2014-01-02 A kind of combined Fluorspar Powder pelletizing binder and application thereof CN103667692B (en)

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CN104451031B (en) * 2014-10-24 2016-09-14 广德县瑞龙新型材料有限公司 A kind of preparation technology of Fluorite pellet
CN105483370B (en) * 2015-11-30 2017-06-09 滦县永恒粘合剂有限公司 Iron powder coal-pressing ball exempts to dry adhesive
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