CN100392113C - Strengthening, increasing temp., sulphur and phosphorus removing composite powder spraying agent for interal cupola iron melt - Google Patents
Strengthening, increasing temp., sulphur and phosphorus removing composite powder spraying agent for interal cupola iron melt Download PDFInfo
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- CN100392113C CN100392113C CNB2006100201881A CN200610020188A CN100392113C CN 100392113 C CN100392113 C CN 100392113C CN B2006100201881 A CNB2006100201881 A CN B2006100201881A CN 200610020188 A CN200610020188 A CN 200610020188A CN 100392113 C CN100392113 C CN 100392113C
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- powder
- sulphur
- composite powder
- spraying agent
- molten iron
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture Of Iron (AREA)
Abstract
The present invention discloses one kind of composite powder preparation for being sprayed into molten iron inside cupola to intensify, raise temperature, desulfurize and dephosphorize. The composite powder preparation is made with forsterite powder, wood powder, calcium carbonate, calcium carbide powder and iron oxide powder in certain weight proportion, and through mixing and crushing. It is sprayed into molten iron inside cupola to raise temperature, desulfurize and dephosphorize in high effect. It has also the capacity of lowering coke consumption and lowering production cost.
Description
Technical field:
Molten iron heats scavenging agent when the present invention relates to molten refining, specifically in the cupola furnace stove molten iron strengthen heat, sulphur removal, dephosphorization composite powder spraying agent.
Background technology:
At present, cast the boundary both at home and abroad and often adopt sulphur removal or the interior dephosphorization of bag in the outer hot metal ladle of stove, and both can not carry out this sulphur removal or phosphorus removing method simultaneously: 1, labour intensity height; 2, environmental pollution is serious; 3, material such as sweetening agent such as calcium carbide, yellow soda ash consumption is big, and specific absorption is low, causes molten iron cost significantly to increase; 4, molten iron temperature and flowability decline to a great extent, and the foundry goods dreg defect is serious, and sulphur removal, phosphor-removing effect are poor, and scrap rate increases.
Summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art, and disclose a kind of in stove spray add and operate simple and easy light, free from environmental pollution, save coke, sulphur and phosphorus removing and heat in the stove that can carry out simultaneously, effective, that cost is low molten iron strengthen heat, sulphur removal, dephosphorization composite powder spraying agent.
This composite powder spraying agent is made up of forsterite powder, wood powder, lime carbonate, calcium carbide powder and brown iron oxide.The formula material amount ranges is by weight percentage:
Forsterite powder 15～20% wood powders 13～15%
Lime carbonate 20～25% calcium carbide powders 15～20%
Brown iron oxide 32～36%
MgO, CaO, the CaC that forsterite powder described in the prescription, lime carbonate, calcium carbide powder decomposes produce can combine with the sulphur in the molten iron and generate sulfide alkalescence scum silica frost, after phosphorus association reaction in oxidation iron rule and the molten iron generates phosphide scum silica frost inflow forehearth, scum separates, and reaches the effect of automatic sulphur removal and dephosphorization stove in;
Described forsterite powder (2MgOSiO
2) have the molten iron of raising flowability, improve the interior metallurgical state of stove, reinforcement heats, powerful effect of gathering slag and remarkable saving coke;
Described calcium carbide (CaC) and wood powder can play overheavy firing and the effect of heating and do not contain sulfur, and playing coke can not role;
Described CaCO
3Not only can desulfurization, also have slag making and assemble the effect of sulphur, phosphorus inclusion;
The comprehensive action of 5 kinds of above-mentioned raw materials can realize that overheavy firing in the stove, molten iron heat, the best effect of sulphur removal, dephosphorization, purification.
Production technique of the present invention, making method are simple, during production, take by weighing above-mentioned raw materials in proportion, after mixing, pulverize 100 mesh sieves again; During use, this powder is put in the storage tank of spray feeder apparatus, at the cupola furnace fusion process feed valve is opened, powder sprays in the thorax from the air-flow that the spray feeder apparatus blows in company with gas blower, pulvis with drop down the molten iron that drips and contact with maximum surface area, and can play overheavy firing in the moment at several seconds zero point reaction decomposes, heat, sulphur removal, dephosphorization, purification effects.The pulvis consumption is controlled by valve, is 0.5～1.5% of weight of molten iron for metal charge weight only generally.
The invention has the advantages that:
1, because in the composition of raw materials, contain can play heat, forsterite powder, wood powder, Paris white, brown iron oxide and the calcium carbide powder of sulphur removal, dephosphorization and purifying molten iron effect, so heat, sulphur removal, dephosphorization can carry out synchronously, and owing to absorb fully, reaction fast, so heat, sulphur removal, phosphor-removing effect be good;
2, pulvis adopts the spray feeder apparatus to spray in company with air blast, and is convenient and easy, greatly reduces working strength of workers;
3, owing in the prescription wood powder and calcium carbide are arranged, its combustion-supporting effect in burner hearth is equivalent to more than 3 times of feed way of coke tradition, so can reduce the usage quantity of coke, reduces production costs greatly;
4, this powdery spray, raw material is easy to get, and the preparation method is simple, and is with low cost.
Description of drawings:
Fig. 1 is technological process of production figure of the present invention.
Embodiment:
The raw materials used commercialization outsourcing powder that all belongs in the present invention's prescription.
Preparation 1000kg heats, sulphur removal, dephosphorization composite powder spraying agent: take by weighing after forsterite powder 150kg, wood powder 130kg, lime carbonate 200kg, calcium carbide powder 170kg, brown iron oxide 350kg mix, pulverized 100 mesh sieves and get product.During use, this powder is put in the storage tank of spray feeder apparatus, in the cupola furnace fusion process, feed valve is opened, fine powder sprays in the burner hearth at a high speed in company with the gas blower air-flow, realize contacting with maximum surface area with molten iron, and can reach overheavy firing in the moment at several seconds zero point reaction decomposes, heat, the effect of sulphur removal, dephosphorization.
Claims (1)
- In the cupola furnace stove molten iron strengthen heat, sulphur removal, dephosphorization composite powder spraying agent, it is characterized in that: mixed to pulverize forming by forsterite powder, wood powder, lime carbonate, calcium carbide powder and brown iron oxide, its raw material amount ranges is by weight percentage:Forsterite powder 15～20%Wood powder 13～15%Lime carbonate 20～25%Calcium carbide powder 15～20%Brown iron oxide 32～36%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100201881A CN100392113C (en) | 2006-01-15 | 2006-01-15 | Strengthening, increasing temp., sulphur and phosphorus removing composite powder spraying agent for interal cupola iron melt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100201881A CN100392113C (en) | 2006-01-15 | 2006-01-15 | Strengthening, increasing temp., sulphur and phosphorus removing composite powder spraying agent for interal cupola iron melt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN100999772A CN100999772A (en) | 2007-07-18 |
| CN100392113C true CN100392113C (en) | 2008-06-04 |
Family
ID=38258597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100201881A Expired - Fee Related CN100392113C (en) | 2006-01-15 | 2006-01-15 | Strengthening, increasing temp., sulphur and phosphorus removing composite powder spraying agent for interal cupola iron melt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100392113C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851429A (en) * | 2011-06-30 | 2013-01-02 | 王中博 | Technology for comprehensively removing harmful impurity elements of sulfur and phosphorus from iron in iron melting furnace |
| CN103537636B (en) * | 2013-10-29 | 2016-01-20 | 新疆华莎能源股份有限公司 | There is the steel of sulfur phosphorus eliminating function, molten iron slag gathering heat insulating covering agent |
| CN103589824B (en) * | 2013-10-29 | 2015-02-25 | 新疆华莎能源股份有限公司 | Sulfur and phosphor removing stoking material for cupola furnaces |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061438A (en) * | 1990-11-16 | 1992-05-27 | 祁阳县冶金熔剂材料厂 | Cast steel and cast iron refining agent |
| JP2002048307A (en) * | 2000-05-22 | 2002-02-15 | Denso Corp | Fuel burning heater |
| CN1384213A (en) * | 2001-04-30 | 2002-12-11 | 沈阳东北大学冶金技术研究所 | Binary deactivated blown non-metal powder and its prepn |
| CN1532294A (en) * | 2003-03-20 | 2004-09-29 | 四川奥龙铸造材料有限公司 | Heating high efficiency sweetening agent |
-
2006
- 2006-01-15 CN CNB2006100201881A patent/CN100392113C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061438A (en) * | 1990-11-16 | 1992-05-27 | 祁阳县冶金熔剂材料厂 | Cast steel and cast iron refining agent |
| JP2002048307A (en) * | 2000-05-22 | 2002-02-15 | Denso Corp | Fuel burning heater |
| CN1384213A (en) * | 2001-04-30 | 2002-12-11 | 沈阳东北大学冶金技术研究所 | Binary deactivated blown non-metal powder and its prepn |
| CN1532294A (en) * | 2003-03-20 | 2004-09-29 | 四川奥龙铸造材料有限公司 | Heating high efficiency sweetening agent |
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| Publication number | Publication date |
|---|---|
| CN100999772A (en) | 2007-07-18 |
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