CN103467111B - Compound bonding agent for baking-free magnesium vibration material - Google Patents
Compound bonding agent for baking-free magnesium vibration material Download PDFInfo
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- CN103467111B CN103467111B CN201310369326.7A CN201310369326A CN103467111B CN 103467111 B CN103467111 B CN 103467111B CN 201310369326 A CN201310369326 A CN 201310369326A CN 103467111 B CN103467111 B CN 103467111B
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- bonding agent
- magnesia
- vibration material
- composite binder
- toast
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Abstract
The invention discloses a compound bonding agent for a baking-free magnesium vibration material. The compound bonding agent is composed of the following components by mass percent: 86.35 wt% of anhydrous dextrose, 4.55 wt% of borax, 4.55 wt% of tropine and 4.55 wt% of industrial salt. The bonding agent is the non-toxic, tasteless and nuisanceless white crystalline particles or powder, has strong basicity, is easily dissolved in water, and is insoluble in alcohol and acid, the aqueous solution of the bonding agent is alkaline, and the bonding agent belongs to inorganic salt products. No elements polluting molten steel exist, no toxic or harmful gas is produced during heating the bonding agent, occupational safety and health of workers cannot be influenced, and no pollution to the environment is caused.
Description
Technical field
The present invention relates to for exempting to toast the composite binder of magnesia vibration material.
Background technology
It is raw material that the bonding agent of current magnesia vibration material generally adopts solid phenolic resin, discharges toxic and harmful amount large during Baking out, and contaminate environment is unfavorable for the requirements such as clean steel-making and environmental protection, brings healthy hidden danger to construction operation personnel simultaneously.
Summary of the invention
Technical problem to be solved by this invention is just to provide and a kind ofly for exempting to toast the composite binder of magnesia vibration material, meets environmental requirement, also can guarantee workmen's safety.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of for exempting to toast the composite binder of magnesia vibration material, described composite binder is comprised of dextrose anhydrous, borax, tropine, Industrial Salt.
Preferably, the batching of described composite binder is by mass percentage: dextrose anhydrous: 86.35wt%; Borax: 4.55wt%; Tropine: 4.55wt%; Industrial Salt: 4.55wt%.
Preferably, after the first pre-mixing of described composite binder and setting accelerator and water reducer, mix with other feed particles of exempting to toast magnesia vibration material again.
Bonding agent of the present invention is a kind of nontoxic, tasteless, non-harmful white crystals particle or powder, has strong basicity, soluble in water, is insoluble to alcohol and acid, and the aqueous solution is alkalescence, belongs to inorganic salt product.Containing pollute molten steel composition, heating time can not produce toxic and harmful, there is not the factor that affects workman's occupational safety and health, environmentally safe.
Embodiment
Below in conjunction with exempting to toast magnesia vibration material and preparation method explains to composite binder wherein.
Exempting to toast magnesia vibration material is comprised of the raw material of following components by weight percent: magnesia 93～96%, composite binder 3～6%, setting accelerator 0.2～0.8%, polycarboxylate water reducer 0.2～0.8%, described composite binder is comprised of dextrose anhydrous, borax, tropine (urotropine), Industrial Salt, and the particle diameter of described magnesia is greater than 0mm and is less than or equal to 2mm.The batching of described composite binder is by mass percentage: dextrose anhydrous: 86.35wt%; Borax: 4.55wt%; Tropine: 4.55wt%; Industrial Salt: 4.55wt%.
Specific embodiment 1, in this vibration material, the weight percent of each component is: magnesia 94%, composite binder 5%, setting accelerator 0.5%, polycarboxylate water reducer 0.5%.
Specific embodiment 2, in this vibration material, the weight percent of each component is: magnesia 96%, composite binder 3%, setting accelerator 0.8%, polycarboxylate water reducer 0.2%.
Specific embodiment 3, in this vibration material, the weight percent of each component is: magnesia 95%, composite binder 4%, setting accelerator 0.6%, polycarboxylate water reducer 0.4%.
Above-mentionedly exempt to toast magnesia vibration material preparation method and comprise the following steps successively:
A) block magnesia is broken into macrobead with jaw crusher;
B) with roller crusher, macrobead is ground into the small-particle that particle diameter is 0～2mm;
C) small-particle is sieved by particle diameter difference, the small-particle that particle diameter is 0～2mm is acceptable material;
D) get particle diameter non-zero～small-particle of 2mm steams again, with roller crusher, non-acceptable material pulverized;
E) small-particle is sieved by particle diameter difference, the small-particle that particle diameter is 0～2mm is acceptable material;
F) repeating step d) and e), until all particle diameters are 0～2mm;
G) take batching and carry out composite binder pre-mixing, batching is by mass percentage: dextrose anhydrous: 86.35wt%; Borax: 4.55wt%; Tropine: 4.55wt%; Industrial Salt: 4.55wt%; Pour above-mentioned batching into forced stirrer stirring and carry out pre-mixing in 50～60 minutes, after pre-mixing, get 5wt% and be delivered to mixing system;
H) take 0.5wt% setting accelerator and be delivered to mixing system;
I) take 0.5wt%SN-II water reducer and be delivered to mixing system;
J) by the composite binder in step g), step h) in setting accelerator, step I) in water reducer in mixing system, carry out pre-mixing, batch mixing 8～10 minutes;
K) by f) small-particle in step gets 94wt% and is filled in Preblend system PBS tank, and batch mixing was delivered to mixing system after 6～8 minutes;
L) by step j) in premixed bonding agent, water reducer and setting accelerator and step k) in magnesia particle in mixing system, stir and after 8～10 minutes, carry out packing and obtain exempting to toast magnesia vibration material finished product.
Wherein said g) in step, churning time is 55 minutes; G) in step, mixing time is 9 minutes; K) in step, churning time is 7 minutes, and l) in step, churning time is 9 minutes.
In foregoing description, in composite binder, each component is that part by weight is to occupy the weight percent of composite binder, and other are and occupy the weight percent of exempting to toast magnesia vibration material gross weight.
The technical performance index of product of the present invention is as follows:
1、MgO（%）≥85
2、SiO
2（%）≤5
3, volume density (g/cm3): room temperature 20 ℃ >=2.0
1500℃×3h≥2.0
4, folding strength (MPa) room temperature 20 ℃ >=0.5
1500℃×3h≥2.0
5, compressive strength (MPa) room temperature 20 ℃ >=2.0
1500℃×3h≥8。
Above-mentionedly exempt to toast magnesia vibration material and have the following advantages:
1, starting material are single, reduce production process, reduce overstocking of materials, warehousing management, etc. every cost:
Product starting material are single, do not exist because transportation, the minimum amount of stocking up etc. are former thereby carry out various types of materials deposit, and reduce raw materials inventory and overstock, and stock the trucking costs cost, warehousing management cost, the financial cost that produce;
2, exempt from baking, save baking medium, improve tundish turnover utilization ratio:
Amount of water approximately 1.5～2% during product construction, composite binder combination, polycarboxylate water reducer has excellent water-reducing rate, mobility, perviousness, can obviously strengthen the intensity of construction body, reduces product moisture.Reasonably formula allows product really realize short period of time combination, to have reduced, construct and within 1 hour, can exempt to toast demoulding and be delivered for use, omitted roasting procedure, saved baking medium cost, stopped to dry package operation accident generation, reduced labor strength, improved the turnover utilization ratio of tundish, exempt to toast magnesia vibration material and be the type material that meets the efficient energy-saving and emission-reducing that country advocates;
3, environmental protection:
Exempt to toast that magnesia vibration material adopts is the composite binder combination that self-control coordinates, this bonding agent is a kind of nontoxic, tasteless, non-harmful white crystals particle or powder, has strong basicity; soluble in water; be insoluble to alcohol and acid, the aqueous solution is alkalescence, belongs to inorganic salt product.Containing pollute molten steel composition, heating time can not produce toxic and harmful, there is not the factor that affects workman's occupational safety and health, environmentally safe;
4, reduce steel-making cost:
First, exempt from baking: 280 yuan of/hour * 4=1120.00 units of saving medium, baking 10 yuan of/hour * 4 hours * 2 people=80 of wage directly reduce costs 1200 yuan of/tundish; With the bag of merely hitting minimum consumption every day one, adjust, year save 43.2 ten thousand yuan; Secondly, the economic benefit that raising equipment turnover rate brings is directly fallen this benefit considerably beyond product.Year economic benefit surpasses more than 1,000,000.
Claims (2)
1. one kind for exempting to toast the composite binder of magnesia vibration material, it is characterized in that: described composite binder is comprised of dextrose anhydrous, borax, urotropine, Industrial Salt, the batching of described composite binder is by mass percentage: dextrose anhydrous: 86.35wt%; Borax: 4.55wt%; Urotropine: 4.55wt%; Industrial Salt: 4.55wt%, exempts to toast magnesia vibration material and is comprised of the raw material of following components by weight percent: magnesia 93 ~ 96%, composite binder 3 ~ 6%, setting accelerator 0.2 ~ 0.8%, polycarboxylate water reducer 0.2 ~ 0.8%.
2. according to claim 1 for exempting to toast the composite binder of magnesia vibration material, it is characterized in that: after the first pre-mixing of described composite binder and setting accelerator and water reducer, mix with other feed particles of exempting to toast magnesia vibration material again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310369326.7A CN103467111B (en) | 2013-08-22 | 2013-08-22 | Compound bonding agent for baking-free magnesium vibration material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310369326.7A CN103467111B (en) | 2013-08-22 | 2013-08-22 | Compound bonding agent for baking-free magnesium vibration material |
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| Publication Number | Publication Date |
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| CN103467111A CN103467111A (en) | 2013-12-25 |
| CN103467111B true CN103467111B (en) | 2014-09-03 |
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| CN201310369326.7A Active CN103467111B (en) | 2013-08-22 | 2013-08-22 | Compound bonding agent for baking-free magnesium vibration material |
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| CN104119681B (en) * | 2014-07-14 | 2016-08-24 | 浙江汉维通信器材有限公司 | A kind of fire-resisting cable insulant preparation method |
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| CN100453211C (en) * | 2007-06-22 | 2009-01-21 | 河北理工大学 | Method for preparing dry working lining |
| CN101328071B (en) * | 2008-07-31 | 2011-05-18 | 武汉科技大学 | Magnesia-calcia dry type working liner for tundish and preparation thereof |
| CN102010215A (en) * | 2010-12-17 | 2011-04-13 | 武汉科技大学 | Tundish dry type vibration material taking waste magnesia carbon bricks as raw materials and preparation method thereof |
| CN102910924B (en) * | 2012-11-19 | 2014-01-15 | 长兴攀江冶金材料有限公司 | Dry material using waste magnesia carbon brick as main raw material and preparation method of dry material |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 313103, Huzhou, Zhejiang province Changxing County peace Town sand port village Zhejiang Sheng Metallurgical Materials Co., Ltd. Patentee after: Zhejiang Panxi Metallurgical Material Co., Ltd. Address before: 313103, Zhejiang, Changxing County, Huzhou province Wu Shan township sand port village Changxin Panzhihua Metallurgical Materials Co., Ltd. Patentee before: Changxing Panjiang Metallurgy Material Co., Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20131225 Assignee: Panzhihua Shunteng Group Metallurgical Materials Co., Ltd. Assignor: Zhejiang Panxi Metallurgical Material Co., Ltd. Contract record no.: 2018510000030 Denomination of invention: Compound bonding agent for baking-free magnesium vibration material Granted publication date: 20140903 License type: Exclusive License Record date: 20180718 |