CN1115313C - Draining sand - Google Patents
Draining sand Download PDFInfo
- Publication number
- CN1115313C CN1115313C CN 99114722 CN99114722A CN1115313C CN 1115313 C CN1115313 C CN 1115313C CN 99114722 CN99114722 CN 99114722 CN 99114722 A CN99114722 A CN 99114722A CN 1115313 C CN1115313 C CN 1115313C
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- CN
- China
- Prior art keywords
- forsterite
- drainage sand
- tapping
- magnesite clinker
- electrosmelted magnesite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention relates to indispensable fireproofing material for the tapping of an eccentric furnace, namely to draining sand, which is prepared by the following main steps: adopting forsterite in Henan and fused magnesite in Dashiqiao, Liaoning as principal raw materials; adopting carbon material in Yichang, Hubei as an additive agent; combining the principal raw materials and the additive agent according to a certain particle diameter and weight percentage; mixing the principal raw materials and the additive agent. Proved by probation, the draining sand has the advantages of good dispersing flowability, high refractability, no sintering, no clogging, tapping rate and draining rate of 100%, service temperature of at least 1750 DEG C, no chemically reaction with molten steel and alloy composition and no variability of storage quality, and thus, the draining sand as the optimal fireproofing material for the tapping of an eccentric furnace can satisfy the requirement of steelmaking technology.
Description
The present invention relates to a kind of eccentric stove tapping and use requisite refractory materials, especially relate to a kind of refractory materials that when tapping, plays the drainage guide effect.
Increase along with the metallurgy industry product category, quality improves gradually, in order to improve steel tapping casting efficient and quality, the consistent development of attaching great importance to drainage sand of each side, enforcement for many years and probationary certificate, it is the principal element of decision drainage effect that the quality of drainage sand and particle diameter are formed, and the drainage sand that present domestic many producers are produced will produce the eutectic material and fusion when (〉=1650 ℃) use under high-temperature situation, bond, stop up tapping, so that must burn and to tap, thereby strengthened Master Cost and labor strength with the logical oxygen of oxygen lance, increased production cost, use the safety coefficient of these drainage sand low, dispersion flows is poor, and the drainage rate is low.
Patent Office of the People's Republic of China discloses a kind of diversion sands for ladle with publication number CN1165798A, its main raw material comprises refining quartz sand, kyanite, superfine yellow, white aluminium vanadine, graphite, feldspar etc., though advantages such as hardness is big, fusing point is high, reusability is good that the drainage sand that utilizes above-mentioned raw materials to make has, it selects materials, prepares burden very complicated.
The refractory materials that the objective of the invention is to overcome above-mentioned the deficiencies in the prior art and provide a kind of batching is simple, refractoriness is high, dispersion flows is good, safety coefficient is high, the drainage rate is high eccentric stove of selecting materials to use.
The refractory materials that eccentric stove provided by the present invention is used, adopting the electrosmelted magnesite clinker of Henan forsterite and Dashiqiao, Liaoning is main raw material, the Yichang carbon materials is an additive, the particle diameter and the weight percent of composition are as follows: raw material particle size weight percent forsterite 3-5mm 30-50% electrosmelted magnesite clinker 3-5mm 5-10% forsterite 0.5-2mm 10-25% electrosmelted magnesite clinker 0.5-2mm 20-30% carbon element 100 order 3-6% wherein, above-mentioned forsterite, the chemical constitution of electrosmelted magnesite clinker is as follows respectively:
Wherein, summation igloss≤3% of above-mentioned forsterite, electrosmelted magnesite clinker, these three kinds of compositions of carbon element.
| MgO | SiO 2 | Fe 2O 3 | Al 2O 3 | CaO | Impurity | |
| Forsterite | 40-45％ | 38-40％ | 6-8％ | 0.1-1％ | 1-2％ | Surplus |
| Electrosmelted magnesite clinker | 90-92％ | 2-3％ | 0.1-1％ | 2-3％ | Surplus |
Simultaneously, Fe in the drainage sand that makes by above-mentioned raw materials
2O
3Weight content≤5.66%, the weight content of C 〉=5%;
In addition, in above-mentioned drainage sand, also comprise 100 purpose resole 0.2-1% (weight percent).
This drainage sand adopts following production method to produce: at first respectively various raw materials are carried out fragmentation, screening, prepare burden by above-mentioned prescription then, then forsterite and electrosmelted magnesite clinker are carried out premix, add the carbon element mixing at last and promptly get this drainage sand.
The physicochemical property of this drainage sand is as follows:
| Chemical ingredients | MgO | SiO 2 | CaO | Fe 2O 3 | C |
| Weight percent % | ≥55.35 | ≤26.12 | ≤2.16 | ≤5.66 | ≥5.0 |
Physicals
| Volume density (g/Cm 3) | ℃ |
| ≥2.80 | ≥1700 |
This drainage sand adds the interpolation carbon materials because adopt natural magnesium, magnesium siliceous raw material, and when steel-making, this drainage sand plays the furnace charge filling effect, plays the effect of drainage during tapping.When the steel-making operation, SiO
2Produce liquid phase (on a small quantity) and reach and fill the effect of stopping up, make and between the steel-making operational period seepage molten steel does not take place and burn out tap system device and other utility appliance, thereby improved safety coefficient greatly; During tapping, because carbon materials refractoriness height, greater than 1750 ℃, and not with other composition generation chemical reaction, be difficult for by moistening and be sintered, so increased dispersion flows, simultaneously, because the purity height of raw material, total impurities is low, crystal development is good and fine and close, and forsterite, electrosmelted magnesite clinker and the igloss of three kinds of raw material summations of carbon element are not more than 3%, have reduced irony content, make content≤5.66% of its compound, avoided effectively thereby the situation generation of pottery in conjunction with the effect that influences drainage not taking place, thereby guaranteed good dispersion flows, made the tapping rate reach 100% because of low fire-resistant phase is not melted, and then saved fuel indirectly, material has reduced production cost.Outside inferior, the present invention also has the simple advantage of batching preparation.
The invention will be further described below in conjunction with embodiment:
Embodiment 1: at first forsterite, electrosmelted magnesite clinker are carried out fragmentation respectively, sieve out two kinds of different-grain diameter raw materials of 3-5mm particle diameter and 0.5-2mm particle diameter then, and after the breeze powder crossed 100 purposes sieves, get the raw materials ready by following prescription: 50 kilograms in 300 kilograms of breeze powder of 300 kilograms of electrosmelted magnesite clinker 3-5mm of forsterite 3-5mm double centner, 250 kilograms of electrosmelted magnesite clinker 0.5-2mm of forsterite 0.5-2mm, 100 orders
Then forsterite and electrosmelted magnesite clinker are carried out premix, mix back adding breeze powder and mix, promptly get this drainage sand after mixing.
Embodiment 2: the method for pressing among the embodiment 1 is prepared raw material, and prepares by following prescription:
500 kilograms of forsterite 3-5mm
50 kilograms of electrosmelted magnesite clinker 3-5mm
160 kilograms of forsterite 0.5-2mm
250 kilograms of electrosmelted magnesite clinker 0.5-2mm
40 kilograms in wooden carbon 100 orders
And make this drainage sand by the method among the embodiment 1.
Embodiment 3: the method for pressing among the embodiment 1 is prepared forsterite and electrosmelted magnesite clinker, then graphite is crossed 100 purposes sieve, again resole is crossed 100 purposes sieve after, by getting the raw materials ready as the below:
430 kilograms of forsterite 3-5mm
Electrosmelted magnesite clinker 3-5mm double centner
200 kilograms of forsterite 0.5-2mm
200 kilograms of electrosmelted magnesite clinker 0.5-2mm
60 kilograms in graphite 100 orders
10 kilograms in resole 100 orders
At first electrosmelted magnesite clinker and forsterite are carried out premix then, add graphite and resole behind the mixing again and carry out mixing and promptly get this drainage sand.
Embodiment 4: the method by embodiment 3 prepares raw material and preparation drainage sand, and concrete composition of raw materials changes following proportioning into:
420 kilograms of forsterite 3-5mm
80 kilograms of electrosmelted magnesite clinker 3-5mm
208 kilograms of forsterite 0.5-2mm
260 kilograms of electrosmelted magnesite clinker 0.5-2mm
30 kilograms in graphite 100 orders
2 kilograms in resole 100 orders
This drainage sand is tested on No. 5 stoves in refining workshop of steel-making subsidiary factory of Chengdu metallurgical test factory, consistently think through on probation repeatedly: this drainage sand have good dispersion flows, refractoriness height, not sintering, do not stop up, tapping rate drainage rate reaches 100%, use temperature 〉=1750 ℃, not with molten steel and alloying constituent generation chemical reaction, store quality mutability does not take place, be that eccentric stove is made steel optimal refractory materials, can satisfy process for making requirement (every stove steel-making time 180-200min).
Claims (8)
1, a kind of drainage sand is characterized in that comprising the composition of following particle diameter, weight percent:
Forsterite 3-5mm 30-50%
Electrosmelted magnesite clinker 3-5mm 5-10%
Forsterite 0.5-2mm 10-25%
Electrosmelted magnesite clinker 0.5-2mm 20-30%
Carbon element 100 order 3-6%
2, drainage sand according to claim 1 is characterized in that summation igloss≤3% of forsterite, electrosmelted magnesite clinker, these three kinds of compositions of carbon element.
3, drainage sand according to claim 1 is characterized in that forsterite comprises the chemical constitution composition of following weight percent:
MgO 40-45％
SiO
2 38-40％
Fe
2O
3 6-8％
Al
2O
3 0.1-1％
CaO 1-2％
Surplus is an impurity.
4,, it is characterized in that electrosmelted magnesite clinker comprises the chemical constitution composition of following weight percent according to claim 1,2 described drainage sand:
MgO 90-92％
SiO
2 2-3％
Fe
2O
3 0.1-1％
CaO 2-3％
Surplus is an impurity.
5, drainage sand according to claim 1 is characterized in that content≤5.66% of Fe2O3.
6, drainage sand according to claim 1 is characterized in that content 〉=5% of C.
7, drainage sand according to claim 1 is characterized in that also comprising 100 purpose resole 0.2-1% of following weight percent.
8,, it is characterized in that described carbon element is breeze powder, wooden carbon or graphite according to claim 1,2 described drainage sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114722 CN1115313C (en) | 1999-03-23 | 1999-03-23 | Draining sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114722 CN1115313C (en) | 1999-03-23 | 1999-03-23 | Draining sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1267652A CN1267652A (en) | 2000-09-27 |
| CN1115313C true CN1115313C (en) | 2003-07-23 |
Family
ID=5277771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99114722 Expired - Fee Related CN1115313C (en) | 1999-03-23 | 1999-03-23 | Draining sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1115313C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100475387C (en) * | 2007-09-03 | 2009-04-08 | 武汉科技大学 | White olivine ladle draining sand and method for preparing the same |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508586B (en) * | 2009-03-27 | 2011-09-07 | 武汉钢铁(集团)公司 | Paint for continuous casting pouring box work liner and preparing technique thereof |
| TWI458830B (en) * | 2011-11-09 | 2014-11-01 | China Steel Corp | Evaluation method of sliding door |
| CN102584278B (en) * | 2012-01-12 | 2013-09-04 | 浙江铭德新材科技有限公司 | Forsterite seating brick and production method of forsterite seating brick |
| CN104086189B (en) * | 2014-06-26 | 2016-02-10 | 浙江锦诚耐火材料有限公司 | A kind of stuffing sand |
| EP3103780A1 (en) * | 2015-06-10 | 2016-12-14 | Refractory Intellectual Property GmbH & Co. KG | Refractory ceramic product, use of such a product, electric arc furnace with tapping sput, process of filling the tapping sput of an electric arc furnace and formulation for producing a refractory ceramic product |
| CN108164273A (en) * | 2017-12-29 | 2018-06-15 | 郭舒洋 | A kind of ladle draining sand |
| CN111283181B (en) * | 2020-02-27 | 2022-05-24 | 北京首钢股份有限公司 | Filling method of double-layer drainage sand and application thereof |
| CN112247131A (en) * | 2020-09-16 | 2021-01-22 | 德龙钢铁有限公司 | Ladle drainage sand and sand adding method |
| CN114315321A (en) * | 2021-12-22 | 2022-04-12 | 河南通宇冶材集团有限公司 | Special drainage agent for cord steel and preparation method thereof |
| CN115772027A (en) * | 2022-12-16 | 2023-03-10 | 河南玄同新材料技术有限公司 | Preparation method of alkaline drainage agent |
-
1999
- 1999-03-23 CN CN 99114722 patent/CN1115313C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100475387C (en) * | 2007-09-03 | 2009-04-08 | 武汉科技大学 | White olivine ladle draining sand and method for preparing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1267652A (en) | 2000-09-27 |
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