CN105481389A - Energy-saving environmentally-friendly dry material for tundish and preparation method of energy-saving environmentally-friendly dry material - Google Patents
Energy-saving environmentally-friendly dry material for tundish and preparation method of energy-saving environmentally-friendly dry material Download PDFInfo
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- CN105481389A CN105481389A CN201410478184.2A CN201410478184A CN105481389A CN 105481389 A CN105481389 A CN 105481389A CN 201410478184 A CN201410478184 A CN 201410478184A CN 105481389 A CN105481389 A CN 105481389A
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Abstract
The invention relates to energy-saving environmentally-friendly dry material for a tundish and a preparation method of the energy-saving environmentally-friendly dry material. The technical scheme adopted by the invention lies in that the preparation method comprises the following steps of according to the theory content of MgO being 50-80wt% and the theory content of CaO being 15-45wt%, mixing mixture granules of 50-70wt% of magnesite and limestone of 0-3mm, with mixture powder of 25-45wt% of magnesium sand and slaked lime which are smaller than 0.088mm, 0.5-10wt% of a mixing agent of silicon micro powder and sodium borate, and 5-15wt% of a bonding agent so as to obtain a mixture, performing stirring and vibration for shaping, and performing baking under the condition of 220-320 DEG C; and performing demouding so as to obtain the dry working lining for the tundish. The energy-saving environmentally-friendly dry working lining disclosed by the invention is simple in technology, convenient in construction, low in cost, environmentally-friendly, and low in consumption of energy resources; the prepared energy-saving environmentally-friendly dry working lining for the tundish has excellent metallurgy effects and the characteristic of being easy to disintegrate after being used.
Description
Technical field
The invention belongs to amorphous refractory technical field.Particularly relate to a kind of energy saving and environment friendly tundish dry material and preparation method thereof.
Background technology
Tundish is last metallurgical tank of process for making, and it is very large on the impact of steel quality.So, people are to this has been a large amount of research work: as reduced tundish refractory consumption rate, give full play to the metallurgical function (Li Nan of refractory materials, the reaction of refractory materials and iron and steel and the impact [M] on steel quality. Beijing: metallurgical industry press, 2005.158-215.: Wu Huajie, Cheng Zhiqiang, Kingsoft is same, Deng, calcareous and the magnesia tundish paint of magnesium is on the impact [J] of molten steel cleanness. refractory materials, 2002, 36 (3): 145-147.): reduce construction labor capacity, improve with rear disintegration performance (Shen Wei, Huang Wenxi, cut off from dish flourish, cement technology [M]. Beijing: China Construction Industry Press, 1986.19., Li Yousheng, Jiang Hua, Li Nan. Wingdale on the impact of Mg0 matter tundish dry material performance, Wuhan University Of Technology's journal (natural science edition), 2006,29 (5): 455-481.), and improve tundish working efficiency, reduce environmental pollution, development environment-friendly and energy-efficient product, and require to select suitable material according to slab quality.
Liner in dundish experienced by heat-insulating shield and after the coating stage, along with the breakthrough of continuous casting production Quick changing gate technology, have developed tundish dry vibratory material.Such as: " alkaline dry liner for intermediate ladle of continuous casting " technology (CN01115190.0), it is the unsetting composition based on magnesia, its component is by weight percentage: magnesia 85-95%, boride 0.5-3.0%, thermoplastic material 2-10%, phosphoric acid salt 1-3%, fluorochemical 1-3%." the calcareous dry-type working lining of a kind of novel tundish magnesium " (CN02117935.2) is for calcareous raw material with synthetic magnesia-calcium clinker, passivation dolomite sand, passive lime stone sand, calcined dolomite sand, lime kilning stone sand etc., with iron scale, clay, silicon powder etc. for sintering aid, with resin, malt sugar, PVC for bonding agent, obtain dry type lining material through Homogeneous phase mixing." tundish dry type work lining mass of magnesiodolomite " (CN200610066295.8) then primarily of magnesia, rhombspar aggregate and magnesia, a-A1
2o
3fine powder and composite additive, resol are mixed in proportion and form." a kind of preparation method of tundish dry vibratory material " (CN200610018503.7) by weight percentage composition by the magnesia of 85 ~ 97% or forsterite with 3 ~ 15% Starso mix, fetal membrane vibratory compaction is adopted after stirring, 100 ~ 400 DEG C of bakings, the demoulding obtains tundish dry vibratory material." a kind of novel dry working lining " (CN02117371.0) it with magnesia, olivine sand, synthetic magnesia-calcium clinker, passivation dolomite sand, passive lime stone sand, calcining olivine sand for basic raw material, with Tai-Ace S 150 (A12 (S04) 3-18H20), polymerize aluminum chloride (AIC13-6H20), halogen (MgC12-6H20) are bonding agent, with iron scale, clay, silicon powder for sintering aid." magnesium calcium carbon tundish dry working lining " (CN200510059787.X) is electrosmelted magnesite clinker, calcium magnesia sand, graphite, composite additive, the uniform mixtures such as resol.The magnesia of 85-95% mixes with the glucose of 5-15% or citric acid by " a kind of preparation method of dry working lining " (CN200710062203.3) by weight percentage composition, mixes evenly and adopts the vibratory compaction of mould tire.
Above-mentioned dry materials is non-water system material, though there is easy construction, energy input be little, the life-span is long, improve the feature of tundish working efficiency, but there is following shortcoming: resol not only expensive, cost is high, and the generation such as irritant gas ammonia, formaldehyde, free phenol in bake process, contaminate environment, harm workers ' health, the carbon after charing, hydrogen have obvious carburetting to increase hydrogen effect; The dry materials being bonding agent with phosphoric acid salt, muriate, vitriol has strong and stimulating gas to produce equally in baking and use procedure, contaminate environment, harm workers ' health; With single Starso for bonding agent, guarantee dry materials low temperature intensity need be added in a large number, cause eutectic to increase, and the applied at elevated temperature performance of remarkably influenced material and by rear disintegration performance; With magnesia, forsterite for main raw material is to reduction foreign substance in molten steel, the effect of raising billet quality is very micro-; Introduce calcium magnesia sand, unslaked lime etc. containing Ca0 material, because Ca0 preventing hydration technology is not perfect, and very easily aquation, produce expansion and cause the efflorescence such as calcium magnesia sand or unslaked lime, cause material to occur crackle or cracking.
Summary of the invention
The present invention is intended to the deficiency overcoming existing dry materials, object be to provide a kind of low price, environmental friendliness, save energy, have excellent metallurgical effect and use after be easy to disintegrate tundish dry material.
For completing above-mentioned task, the technical solution used in the present invention is: by the theoretical content of Mg0 to be 50-80wt% and Ca0 be 15-45wt%, by the bonding agent mixing being less than 0.088mm magnesia and slaked lime mixture powder, the silicon powder of 0.5-10wt% and the mixture of borax and 5 ~ 15wt% of the compound particles pellet of 3 ~ 0mm magnesite of 50 ~ 70wt% and Wingdale, 25 ~ 45wt%, after stirring and vibratory compaction, toast under 220-320 DEG C of condition, the demoulding obtains dry working lining material.
Described bonding agent or be the mixture of glucide and its ramification and moisture water glass, or be the mixture of glucide and its ramification and Starso, or be the mixture of glucide and its ramification, moisture water glass and Starso.
Described glucide and its ramification is one or more the mixture in glucose, wood sugar, semi-lactosi, fructose, glucuronic acid.
Owing to adopting technique scheme, present invention process is simple, easy construction, and baking time is short, intensity is high, quick baking is substantially smokeless, free from environmental pollution without explosion and obscission, bake process, does not endanger workers ' health; In a small amount of inorganic salt in cheap, the combined binder of combined binder adopted, warm acceleration of sintering ability is strong, high temperature also can with substrate material generating portion high temperature substrate phase, improve working lining high-temperature behavior; The calcic raw material sources adopted are extensive, and without calcination processing save energy, low price and non-aquation, be convenient to depositing of material: the Ca0 decomposed under calcium raw material high temperature exists with f-Ca0 form, is conducive to purifying of steel, the A1 in absorption molten steel
20
3.Si0
2etc. being mingled with and reducing harmful element in steel [S], [P] content, this smelts Clean Steel is very important; Meanwhile, also can according to the kind of raw material and purity and the needs smelting steel grade, adjustment additive add kind and quantity, meet different demand.Prepared working lining has that high, the resistance to molten steel impact capacity of middle adiabator bonding strength is strong, high-temperature anti-corrosion and impermeabilisation ability is strong, the feature of long service life; Use rear intensity low, disintegration performance is good, is easy to turn over bag.
Embodiment
Below in conjunction with concrete embodiment, the present invention will be further described, not limiting the scope of the invention.
Embodiment 1
A kind of energy saving and environment friendly tundish dry material and preparation method thereof: by the theoretical content of Mg0 to be 50-80wt% and Ca0 be 15-45wt%, by the bonding agent mixing being less than 0.088mm magnesia and slaked lime mixture powder, the silicon powder of 6wt% and the mixture of borax and 9wt% of the compound particles pellet of 3 ~ 0mm magnesite of 55wt% and Wingdale, 30wt%, after stirring and vibratory compaction, toast under 220-320 DEG C of condition, the demoulding obtains dry working lining material.
Described bonding agent is the mixture of glucose, semi-lactosi and moisture water glass; Additive is the mixture of iron scale, silicon powder and graphite.
Embodiment 2
A kind of energy saving and environment friendly tundish dry material and preparation method thereof: by the theoretical content of Mg0 to be 50-80wt% and Ca0 be 15-45wt%, by the bonding agent mixing being less than 0.088mm magnesia and slaked lime mixture powder, the silicon powder of 4wt% and the mixture of borax and 14wt% of the compound particles pellet of 3 ~ 0mm magnesite of 57wt% and Wingdale, 25wt%, after stirring and vibratory compaction, toast under 220-320 DEG C of condition, the demoulding obtains dry working lining material.
Described bonding agent is the mixture of glucose, semi-lactosi and Starso: additive is the mixture of iron scale, silicon powder and graphite.
Embodiment 3
A kind of energy saving and environment friendly tundish dry material and preparation method thereof: by the theoretical content of Mg0 to be 50-80wt% and Ca0 be 15-45wt%, by the bonding agent mixing being less than 0.088mm magnesia and slaked lime mixture powder, the silicon powder of 2.5wt% and the mixture of borax and 11.5wt% of the compound particles pellet of 3 ~ 0mm magnesite of 60wt% and Wingdale, 27wt%, after stirring and vibratory compaction, toast under 220-320 DEG C of condition, the demoulding obtains dry working lining material.
Described bonding agent is the mixture of glucose, wood sugar, semi-lactosi and Starso: additive is the mixture of iron scale, silicon powder and graphite.
Embodiment 4
A kind of energy saving and environment friendly tundish dry material and preparation method thereof: by the theoretical content of Mg0 to be 50-80wt% and Ca0 be 15-45wt%, by the bonding agent mixing being less than 0.088mm magnesia and slaked lime mixture powder, the silicon powder of 1.5.wt% and the mixture of borax and 8.5wt% of the compound particles pellet of 3 ~ 0mm magnesite of 62wt% and Wingdale, 28wt%, after stirring and vibratory compaction, toast under 220-320 DEG C of condition, the demoulding obtains dry working lining material.
Described bonding agent is the mixture of glucose, glucuronic acid, moisture water glass and Starso.
Embodiment 5
A kind of energy saving and environment friendly tundish dry material and preparation method thereof: by the theoretical content of Mg0 to be 50-80wt% and Ca0 be 15-45wt%, by the bonding agent mixing being less than 0.088mm magnesia and slaked lime mixture powder, the silicon powder of 1wt% and the mixture of borax and 6wt% of the compound particles pellet of 3 ~ 0mm magnesite of 65wt% and Wingdale, 28wt%, after stirring and vibratory compaction, toast under 220-320 DEG C of condition, the demoulding obtains dry working lining material.
Described bonding agent is the mixture of glucose, fructose and Starso; Additive is the mixture of iron scale, silicon powder and graphite.
Claims (3)
1. energy saving and environment friendly tundish dry material and preparation method thereof, it is characterized in that the theoretical content by Mg0 to be 50-80wt% and Ca0 be 15-45wt%, by the bonding agent mixing being less than 0.088mm magnesia and slaked lime mixture powder, the silicon powder of 0.5-10wt% and the mixture of borax and 5 ~ 15wt% of the compound particles pellet of 3 ~ 0mm magnesite of 50 ~ 70wt% and Wingdale, 25 ~ 45wt%, after stirring and vibratory compaction, toast under 220-320 DEG C of condition, the demoulding obtains dry working lining material.
2. energy saving and environment friendly tundish dry material according to claim 1 and preparation method thereof, it is characterized in that described bonding agent or the mixture for glucide and its ramification and moisture water glass, or be the mixture of glucide and its ramification and Starso, or be the mixture of glucide and its ramification, moisture water glass and Starso.
3. energy saving and environment friendly tundish dry material according to claim 2 and preparation method thereof, is characterized in that described glucide and its ramification is one or more the mixture in glucose, wood sugar, semi-lactosi, fructose, glucuronic acid.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658586A (en) * | 2018-06-26 | 2018-10-16 | 伊川县华银耐火材料有限公司 | A kind of dry materials and preparation method thereof for continuous casting production |
| CN109133874A (en) * | 2018-09-10 | 2019-01-04 | 上海宝明耐火材料有限公司 | A kind of bakie working lining fireproof coating |
| CN110642604A (en) * | 2019-11-07 | 2020-01-03 | 湖北安耐捷炉衬材料有限公司 | Ladle slag-proof coating material for casting and preparation method thereof |
| CN111960833A (en) * | 2020-08-26 | 2020-11-20 | 廊坊森德科技有限公司 | Environment-friendly dry type vibration bonding agent |
-
2014
- 2014-09-19 CN CN201410478184.2A patent/CN105481389A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658586A (en) * | 2018-06-26 | 2018-10-16 | 伊川县华银耐火材料有限公司 | A kind of dry materials and preparation method thereof for continuous casting production |
| CN109133874A (en) * | 2018-09-10 | 2019-01-04 | 上海宝明耐火材料有限公司 | A kind of bakie working lining fireproof coating |
| CN110642604A (en) * | 2019-11-07 | 2020-01-03 | 湖北安耐捷炉衬材料有限公司 | Ladle slag-proof coating material for casting and preparation method thereof |
| CN111960833A (en) * | 2020-08-26 | 2020-11-20 | 廊坊森德科技有限公司 | Environment-friendly dry type vibration bonding agent |
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