CN1032960A - Exothermic, slag trapping and insulating covering agent - Google Patents
Exothermic, slag trapping and insulating covering agent Download PDFInfo
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- CN1032960A CN1032960A CN 87107622 CN87107622A CN1032960A CN 1032960 A CN1032960 A CN 1032960A CN 87107622 CN87107622 CN 87107622 CN 87107622 A CN87107622 A CN 87107622A CN 1032960 A CN1032960 A CN 1032960A
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- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention is a kind of novel exothermic, slag trapping and insulating covering agent cast material, be added in the preceding casting ladle of casting, the function that the metal that dissolves is had simultaneously heating, collection slag, insulation, deoxidation, desulfurization, its heating temp reaches as high as 1650 ℃, can eliminate the casting flaw such as slag inclusion, pore, crackle of foundry goods effectively, thereby be again a kind of ideal molten iron purification treatment agent.Can improve process yield about 15% effectively.
Description
The present invention relates to topped dose of product of a kind of heating slag-collecting thermal-insulating, it belongs to the improvement of deposite metal in the casting ladle before the metal casting being handled used material.
At China's ferrous metal casting industry, traditional plant ash is continued to use in deposite metal insulation before the casting in the casting ladle always, China's early eighties begins to develop perlite and replaces plant ash to do topped dose, external topped dose of also developing the casting special use, the topped dose of product that in the middle of above these existing technology, is provided, though the technical requirements of deposite metal body temperature in the time of can satisfying casting, but, that abroad provide cost an arm and a leg for topped dose with perlite domestic development, its purifying molten iron effect is not obvious, heating, desulfurization, desoxydatoin does not possess, though topped dose of function that the collection slag is arranged of perlite, but collection slag blanket wall built-up is serious, often causes and waters the ladle-lining damage.So people want to seek topped dose of a kind of ideal always.
The objective of the invention is: a kind of have simultaneously heating, collection slag, insulation, purifying molten iron are provided, desulfurization, deoxygenation function topped dose, it is big to make it thermal value, and thermosteresis is little, and collection slag blanket surface tension is big, and topped dose of raw material sources of wall built-up are not extensive, with low cost.
The present invention is achieved in that topped dose of slag-collecting thermal-insulating of heating is made up of heat-generating agent, skim agent, heat preserving agent and mixed aid, through selecting materials, pulverize, oven dry, mix processing and preparing.
Characteristics of the present invention are: one, heat-generating agent is that heating deoxidizing agent aluminum-silver powder and saltpetre are formed by heating sweetening agent-silicon calcium powder.Two, skim agent is by prepared by pearlite.Three, heat preserving agent be by
Stone and perlite are formed.Four, mixed aid is by oxygenant-ferric oxide iron powder, ignition dope-saltpetre, and tackiness agent-fluorite, weighting agent-red sand are formed.Five, the proportioning of various auxiliary agent mixes is: silicon calcium powder 1-5%, and aluminium silver powder 1-5%, perlite 45-70%,
Stone 15-25%, brown iron oxide 1-5%, saltpetre 4-7%, fluorite 1-3%, red sand 8-15%.Six, topped dose various compositions will be ground into Powderedly or granular, and its granularity is less than 3 millimeters.Seven, the perlite in topped dose,
Stone, fluorite, red sand and ferric oxide brown iron oxide will dried under the temperature more than 20 ℃.
Further specify in conjunction with the accompanying drawings.Accompanying drawing 2 is topped dose of composition synoptic diagram of heating slag-collecting thermal-insulating.1 is heating reductor aluminium silver powder among the figure, and 2 are heating sweetening agent silicon calcium powder, and 3 is the skim agent perlite, and 4 is heat preserving agent
Stone and perlite, 5 is oxygenant ferric oxide iron powder, and 6 is ignition dope saltpetre, and 7 is the tensio-active agent fluorite, and 8 is the weighting agent red sand.
The present invention compares with traditional technology and has the following advantages: one, have heating function, its heating temp can reach 1650 ℃, and fever time is 2 minutes and 12 seconds. Two, the technical performance that has desulfurization, deoxidation has further purified molten iron. Three, heat loss is little, and heat-insulating property is good, can emit a large amount of reaction heat, forms good heat-insulation layer, drops to 1450 ℃ from 1550 ℃ and takes time 19 minutes, shown in accompanying drawing one. Accompanying drawing 1 is the grey cast-iron molten iron, 125 kilograms of casting ladles adopt the keeping temprature curve of plant ash, perlite and heating slag-collecting thermal-insulating covering agent, among the figure, 1 is that plant ash covering agent keeping temprature curve 2 is the insulation line taking of pearlite insulation covering agent, 3 keeping temprature curves for heating slag-collecting thermal-insulating covering agent. Four, integrate that the slag blanket surface tension is big, the present invention is as 0.2kg/cm2, the perlite covering agent is 0.07kg/cm2, the present invention collects slag blanket and wall built-up not. Five, pore, slag inclusion and the crackle of eliminating foundry goods had significant effect, can obviously improve the yield rate of product, general comparable perlite covering agent improves product yield ratio, about 15%. Six, free from environmental pollution, nontoxic, dustless, free from extraneous odour in use, and easy to operate. Seven, metallographic structure and the mechanical performance for foundry goods has certain benefit, especially spheroidal graphite cast-iron had the good elimination ball effect of declining.
Contriver's a embodiment is: be applicable to topped dose of the heating slag-collecting thermal-insulating of spheroidal graphite cast iron, through selecting materials by following proportioning: aluminium silver powder 3%, silicon calcium powder 3%, brown iron oxide 3.5%, saltpetre 2.5%, fluorite 1.5%, perlite 56.5%,
Stone 19%, red sand 11%, solid composition that respectively will be wherein is ground into the granular or powdery less than 3 millimeters of granularities, and perlite that will be wherein,
Stone, warm up under 0 ℃ of temperature of ⒀ wholesale Feng top ㄊ and dry, mix according to the above ratio stirs then, through quality test, packs with moisture barrier bag and to form.Its Applicable temperature is 1300 ℃-1650 ℃, and its add-on is 0.3% of a metal liquid weight, the adding mode: mill or special tool spreads casting ladle metal liquid surface equably with iron.Through the product yield rate 15% that improved on probation.
The present invention can be widely used in the ferrous metal casting industry, be specially adapted to cast steel, hold steel, spheroidal graphite cast-iron and casting pig, can be applied to the various forging types such as conventional cast, hot investment casting and continuous casting, can also make the heating slag-collecting thermal-insulating covering agent that is applicable to that cast steel, special steel and spheroidal graphite cast-iron etc. are special-purpose according to the material difference of metal liquid. Such as cast steel heating slag-collecting thermal-insulating covering agent etc.
Claims (8)
1, a kind of heating slag-collecting thermal-insulating is characterized in that for topped dose: be made up of heat-generating agent, skim agent, heat preserving agent and mixed aid.Through selecting materials, pulverize, oven dry and mix processing and preparing.
2, topped dose according to claim 1, it is characterized in that said heat-generating agent is that heating deoxidizing agent aluminum-silver powder and saltpetre are formed by heating sweetening agent-silicon calcium powder.
3, topped dose according to claim 1, it is characterized in that said skim agent is by prepared by pearlite.
4, topped dose according to claim 1, its feature said heat preserving agent be by
Stone and perlite are formed.
5, topped dose according to claim 1, it is characterized in that said mixed aid is made up of oxygenant ferric oxide iron powder, ignition dope saltpetre, tackiness agent fluorite, weighting agent red sand.
6, topped dose according to claim 1, it is characterized in that its proportioning of said mix is: silicon calcium powder 1-5%, aluminium silver powder 1-5%, perlite 45-70%,
Stone 15-25%, brown iron oxide 1-5%, saltpetre 4-7%, fluorite 1-3%, red sand 8-15%.
7, topped dose according to claim 1, it is characterized in that said pulverizing is that topped dose various compositions will be ground into powdery or granular, its granularity is less than 3 millimeters.
8, topped dose according to claim 1, it is characterized in that said oven dry, be with wherein perlite,
Stone, red sand fluorite and brown iron oxide composition are being dried under the temperature more than 20 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87107622 CN1008798B (en) | 1987-11-04 | 1987-11-04 | Exothermic, slag trapping and insulating covering agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87107622 CN1008798B (en) | 1987-11-04 | 1987-11-04 | Exothermic, slag trapping and insulating covering agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032960A true CN1032960A (en) | 1989-05-17 |
| CN1008798B CN1008798B (en) | 1990-07-18 |
Family
ID=4816172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87107622 Expired CN1008798B (en) | 1987-11-04 | 1987-11-04 | Exothermic, slag trapping and insulating covering agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008798B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060107C (en) * | 1995-08-21 | 2001-01-03 | 中国科学院金属研究所 | Efficient heat-generating agent for delay solidification of molten metal |
| CN1327994C (en) * | 2005-03-22 | 2007-07-25 | 浙江湖州红鹰企业集团有限公司 | Heat preservation agent in use for molded casting, and producing technique |
| CN102554141A (en) * | 2012-02-24 | 2012-07-11 | 上海市机械制造工艺研究所有限公司 | Heating covering agent for casting steel piece |
| CN102757240A (en) * | 2011-04-25 | 2012-10-31 | 宝山钢铁股份有限公司 | Heating panel used in steel ingot head heat insulation |
| CN102814475A (en) * | 2012-07-31 | 2012-12-12 | 马鞍山科润冶金材料有限公司 | Heating agent for casting stainless steel ingot heads and preparation method of heating agent |
| CN104308106A (en) * | 2014-10-08 | 2015-01-28 | 吴江市液铸液压件铸造有限公司 | Steel ladle covering agent |
| CN106311999A (en) * | 2015-06-30 | 2017-01-11 | 上海梅山钢铁股份有限公司 | Premelting type heating casting slag |
| CN111069543A (en) * | 2019-12-23 | 2020-04-28 | 山东钢铁股份有限公司 | Low-carbon alkaline molten steel heat-preservation covering agent and preparation method thereof |
-
1987
- 1987-11-04 CN CN 87107622 patent/CN1008798B/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060107C (en) * | 1995-08-21 | 2001-01-03 | 中国科学院金属研究所 | Efficient heat-generating agent for delay solidification of molten metal |
| CN1327994C (en) * | 2005-03-22 | 2007-07-25 | 浙江湖州红鹰企业集团有限公司 | Heat preservation agent in use for molded casting, and producing technique |
| CN102757240A (en) * | 2011-04-25 | 2012-10-31 | 宝山钢铁股份有限公司 | Heating panel used in steel ingot head heat insulation |
| CN102554141A (en) * | 2012-02-24 | 2012-07-11 | 上海市机械制造工艺研究所有限公司 | Heating covering agent for casting steel piece |
| CN102814475A (en) * | 2012-07-31 | 2012-12-12 | 马鞍山科润冶金材料有限公司 | Heating agent for casting stainless steel ingot heads and preparation method of heating agent |
| CN104308106A (en) * | 2014-10-08 | 2015-01-28 | 吴江市液铸液压件铸造有限公司 | Steel ladle covering agent |
| CN104308106B (en) * | 2014-10-08 | 2016-07-06 | 吴江市液铸液压件铸造有限公司 | A kind of ladle covering agent |
| CN106311999A (en) * | 2015-06-30 | 2017-01-11 | 上海梅山钢铁股份有限公司 | Premelting type heating casting slag |
| CN111069543A (en) * | 2019-12-23 | 2020-04-28 | 山东钢铁股份有限公司 | Low-carbon alkaline molten steel heat-preservation covering agent and preparation method thereof |
| CN111069543B (en) * | 2019-12-23 | 2021-11-09 | 山东钢铁股份有限公司 | Low-carbon alkaline molten steel heat-preservation covering agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1008798B (en) | 1990-07-18 |
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