CN102492803A - Heat treatment method of slag-removing agent with obsidian as raw material - Google Patents
Heat treatment method of slag-removing agent with obsidian as raw material Download PDFInfo
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- CN102492803A CN102492803A CN2011104461183A CN201110446118A CN102492803A CN 102492803 A CN102492803 A CN 102492803A CN 2011104461183 A CN2011104461183 A CN 2011104461183A CN 201110446118 A CN201110446118 A CN 201110446118A CN 102492803 A CN102492803 A CN 102492803A
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- obsidian
- slag
- raw material
- removing agent
- deslagging agent
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Abstract
The invention belongs to the field of metallurgy, and specifically relates to a heat treatment method of a slag-removing agent with obsidian as a raw material. According to the invention, an obsidian powdery material obtained by two-stage crushing and sieving is heated to a temperature of 300 to 850 DEG C; the temperature is maintained for 1-50min; the powdery material is cooled to room temperature, such that the heat-treated slag-removing agent provided by the invention is obtained. According to the invention, the slag-removing agent with obsidian as the raw material is subject to heat treatment, such that included water inside the material can be removed, and an appropriated water content satisfying a slag-removing agent requirement is obtained. Also, the mineral structure of the material is changed, a high-strength covering crust layer is formed, such that slag can be effectively agglomerated. Therefore, the slag can be prevented from entering a casting mould with molten iron.
Description
Technical field
The invention belongs to field of metallurgy, being specifically related to a kind of is the heat treating method of the deslagging agent of raw material with the obsidian.
Background technology
More than 3,500 ten thousand tons of foundry goods of the annual production of China at present, wherein cast iron and cast steel spare accounts for more than 3,000 ten thousand tons, needs the 2kg deslagging agent to calculate 100,000 tons of deslagging agents of 1 year needs by foundry goods per ton.Deslagging agent is the material that casting and metallurgical industry fusion process use, and can remove the slag of molten iron or molten steel surface fast, and form tectum, prevents molten metal oxidization, and insulation reduces calorific loss.The present deslagging agent that uses mainly makes and adopts perlite to prepare through preparing burden, and it covers lack of homogeneity, and it is slow to form tectum speed, and crust intensity is low, and result of use is undesirable.
The mineral composition and the perlite of obsidian are approaching, form 20-100 purpose powder through two-stage crushing screening back, but with after this undressed powder adding hot metal ladle, disperse slowly can not form the successive mulch film slagging-off poor.
Summary of the invention
To the problem that existing technology exists, of the present invention to provide a kind of be the heat treating method of the deslagging agent of raw material with the obsidian, and purpose is to obtain the good efficient deslagging agent of residue eliminating performance.
Technical scheme of the present invention is:
To pass through the obsidian powder-material that two-stage crushing screening back forms and be heated to 300-850 ℃, and insulation 1min～50min, and be cooled to room temperature then, and promptly obtain the deslagging agent after the thermal treatment of the present invention, its water ratio is 0.2-5.1%.
The moity of the powder-material of described obsidian is: SiO by mass percentage
2: 72～76%; Al
2O
3: 10～15%; CaO:0.5～1.5%; K
2O:3.0～5.5%; Na
2O:3.0～4.5%, Fe
2O
3: 1.0～3.0%, MgO:0.03 ~ 0.06%, TiO
2: 0.1 ~ 0.3%, MnO:0.1 ~ 0.3, S≤0.06%, P≤0.06%, impurity≤0.5%, H
2O:5.4-5.6%.
The wherein said granularity of crossing the obsidian powder-material after two-stage crushing sieves is: 150-800 μ m.
Compared with prior art, characteristics of the present invention and beneficial effect are:
(1) obsidian mostly is distributed in the volcanics area, wide material sources, therefore with obsidian as the deslagging agent low price;
(2) water in the ore has: three types in planar water, combination water and inclusion water, and experimental study shows, deslagging agent is played a role, what produce volumetric expansion mainly is inclusion water; Therefore, what influence deslagging agent slagging-off effect is effective water cut of deslagging agent, different to the Heating temperature of deslagging agent, and the content of the inner moisture that keeps of material is also different after the thermal treatment; Technical scheme of the present invention is to being that the deslagging agent of raw material is heat-treated with the obsidian, and its effect mainly is to remove the inner moisture of material, reaches the suitable water yield requirement of deslagging agent; Change the mineral structure of material simultaneously, form high-intensity covering crust layer, have good expanded feature on the molten iron surface, cover soon; Adaptive temperature wide ranges, the expanded slag blanket that removes are even, and intensity is high, and be difficult for breaking, satchel not; Remove easily, through on-the-spot probationary certificate, it is respond well to remove the gred.
Description of drawings
Fig. 1: thermal treatment temp of the present invention and percentage of water loss graph of a relation;
Fig. 2: the graph of a relation of soaking time of the present invention and percentage of water loss.
Embodiment
Obsidian powder source used in the embodiment of the invention is the obsidian mineral resources of Fuxin and forntier region, the Inner Mongol, and its moity is by mass percentage:: SiO
2: 72～76%; Al
2O
3: 10～15%; CaO:0.5～1.5%; K
2O:3.0～5.5%; Na
2O:3.0～4.5%, Fe
2O
3: 1.0～3.0%, MgO:0.03 ~ 0.06%, TiO
2: 0.1 ~ 0.3%, MnO:0.1 ~ 0.3, S≤0.06%, P≤0.06%, impurity≤0.5%, H
2O:0.5-5.5%.
To pass through the obsidian powder-material that two-stage crushing screening back forms and be heated to 200 ℃-700 ℃, and insulation 50min, be cooled to room temperature then, promptly obtain the deslagging agent after the thermal treatment of the present invention.
To pass through the obsidian powder-material that two-stage crushing screening back forms and be heated to 400 ℃, and insulation 45min, be cooled to room temperature then, promptly obtain the deslagging agent after the thermal treatment of the present invention.
Embodiment 3
To pass through the obsidian powder-material that two-stage crushing screening back forms and be heated to 500 ℃, and insulation 30min, be cooled to room temperature then, promptly obtain the deslagging agent after the thermal treatment of the present invention.
To pass through the obsidian powder-material that two-stage crushing screening back forms and be heated to 600 ℃, and insulation 20min, be cooled to room temperature then, promptly obtain the deslagging agent after the thermal treatment of the present invention.
To pass through the obsidian powder-material that two-stage crushing screening back forms and be heated to 700 ℃, and insulation 10min, be cooled to room temperature then, promptly obtain the deslagging agent after the thermal treatment of the present invention.
Among the embodiment 1-5, under differing temps, the obsidian powder-material is heat-treated, its water ratio change as table 1 with shown in Figure 1, in order to contrast water removal effect, also chosen 200 ℃ routine as a comparison to the thermal treatment of obsidian powder-material.Can find out: Heating temperature is high more, and percentage of water loss is many more, in the time of 200 ℃ only less than 0.05%; Lose 5.2% when losing 2%, 700 ℃ in the time of 400 ℃, visible; Heating temperature is different, and the moisture that material loses is different, so the present invention confirms the temperature of technical scheme at 300-850 ℃.
Table 1 water ratio is with the variation of thermal treatment temp
| Thermal |
200 | 300 | 400 | 500 | 600 | 700 |
| Percentage of water loss/% | 0.0466 | 0.4253 | 2.0094 | 3.9640 | 4.7238 | 5.1998 |
| Water ratio/% | 5.4507 | 5.1107 | 3.5630 | 1.6152 | 0.8207 | 0.3226 |
| Initial condition/% | 5.4948 | 5.5143 | 5.5008 | 5.5152 | 5.5052 | 5.5057 |
To pass through the obsidian powder-material that two-stage crushing screening back forms and be heated to 850 ℃, and insulation 1min, be cooled to room temperature then, promptly obtain the deslagging agent after the thermal treatment of the present invention.
Embodiment 7
The obsidian powder-material that will pass through two-stage crushing screening back formation is heated to 400 ℃ and 500 ℃, is incubated 10 min respectively, 20min; 30min, the percentage of water loss that records is seen table 2 and Fig. 2, as can beappreciated from fig. 2; Heating temperature is to the influence of the percentage of water loss influence greater than soaking time; At 550 ℃ of insulation 10min, be equivalent to percentage of water loss at 400 ℃ of insulation 30min, can accurately control effective water-content of deslagging agent through heating and soaking time.
Table 2 percentage of water loss is with the variation of thermal treatment soaking time
| Soaking time/ |
10 | 20 | 30 |
| 400℃ | 1.0874 | 2.5347 | 3.349 |
| 550℃ | 3.3874 | 4.6497 | 4.9534 |
Claims (3)
1. one kind is the heat treating method of the deslagging agent of raw material with the obsidian; It is characterized in that carrying out according to following steps: the obsidian powder-material that will pass through two-stage crushing screening back formation is heated to 300-850 ℃; And insulation 1min～50min; Be cooled to room temperature then, promptly obtain the deslagging agent after the thermal treatment of the present invention, its water ratio is 0.2-5.1%.
2. according to claim 1 a kind of be the heat treating method of the deslagging agent of raw material with the obsidian, it is characterized in that described obsidian moity, be by mass percentage: SiO
2: 72～76%; Al
2O
3: 10～15%; CaO:0.5～1.5%; K
2O:3.0～5.5%; Na
2O:3.0～4.5%, Fe
2O
3: 1.0～3.0%, MgO:0.03 ~ 0.06%, TiO
2: 0.1 ~ 0.3%, MnO:0.1 ~ 0.3, S≤0.06%, P≤0.06%, impurity≤0.5%, H
2O:5.4-5.6%.
3. according to claim 1 a kind of be the heat treating method of the deslagging agent of raw material with the obsidian, it is characterized in that the described granularity of crossing the obsidian powder-material after the two-stage crushing screening is: 150-800 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104461183A CN102492803A (en) | 2011-12-28 | 2011-12-28 | Heat treatment method of slag-removing agent with obsidian as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104461183A CN102492803A (en) | 2011-12-28 | 2011-12-28 | Heat treatment method of slag-removing agent with obsidian as raw material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102492803A true CN102492803A (en) | 2012-06-13 |
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|---|---|---|---|
| CN2011104461183A Pending CN102492803A (en) | 2011-12-28 | 2011-12-28 | Heat treatment method of slag-removing agent with obsidian as raw material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817635A (en) * | 2016-05-25 | 2016-08-03 | 安徽省春谷3D打印智能装备产业技术研究院有限公司 | Medical cobalt, tantalum and molybdenum alloy 3D printing metal powder with biocompatibility and preparation method of medical 3D printing metal powder |
| CN106041105A (en) * | 2016-05-25 | 2016-10-26 | 安徽省春谷3D打印智能装备产业技术研究院有限公司 | High-strength cobalt-tantalum-molybdenum alloy medical 3D-printing metal powder and preparation method thereof |
| CN107130083A (en) * | 2017-05-17 | 2017-09-05 | 丹晟实业（上海）有限公司 | A kind of efficient iron liquid slagging-off thermal-insulating covering agent of aluminosilicate |
| CN107460277A (en) * | 2017-06-21 | 2017-12-12 | 河池市森机械有限责任公司 | The preparation method of deslagging agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883849A (en) * | 2005-06-24 | 2006-12-27 | 叶和辉 | Thermal insulation deslagging agent for liquid metal |
| CN102114531A (en) * | 2009-12-31 | 2011-07-06 | 常熟市电力耐磨合金铸造有限公司 | Method for producing wear-resistant hammer head |
-
2011
- 2011-12-28 CN CN2011104461183A patent/CN102492803A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883849A (en) * | 2005-06-24 | 2006-12-27 | 叶和辉 | Thermal insulation deslagging agent for liquid metal |
| CN102114531A (en) * | 2009-12-31 | 2011-07-06 | 常熟市电力耐磨合金铸造有限公司 | Method for producing wear-resistant hammer head |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817635A (en) * | 2016-05-25 | 2016-08-03 | 安徽省春谷3D打印智能装备产业技术研究院有限公司 | Medical cobalt, tantalum and molybdenum alloy 3D printing metal powder with biocompatibility and preparation method of medical 3D printing metal powder |
| CN106041105A (en) * | 2016-05-25 | 2016-10-26 | 安徽省春谷3D打印智能装备产业技术研究院有限公司 | High-strength cobalt-tantalum-molybdenum alloy medical 3D-printing metal powder and preparation method thereof |
| CN107130083A (en) * | 2017-05-17 | 2017-09-05 | 丹晟实业（上海）有限公司 | A kind of efficient iron liquid slagging-off thermal-insulating covering agent of aluminosilicate |
| CN107460277A (en) * | 2017-06-21 | 2017-12-12 | 河池市森机械有限责任公司 | The preparation method of deslagging agent |
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Application publication date: 20120613 |