CN101565770A - Fluorite powder pressing block and preparation method thereof - Google Patents
Fluorite powder pressing block and preparation method thereof Download PDFInfo
- Publication number
- CN101565770A CN101565770A CNA2009100510179A CN200910051017A CN101565770A CN 101565770 A CN101565770 A CN 101565770A CN A2009100510179 A CNA2009100510179 A CN A2009100510179A CN 200910051017 A CN200910051017 A CN 200910051017A CN 101565770 A CN101565770 A CN 101565770A
- Authority
- CN
- China
- Prior art keywords
- fluorite
- pressing block
- powder pressing
- content
- fluorite powder
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention particularly relates to a fluorite powder pressing block as well as a preparation method and applications thereof in AOD converter steelmaking. The method for preparing the fluorite powder pressing block is characterized in that the fluorite fine powder, the fluorite powder and a sodium silicate adhesive accounting for 10% of the total weight are added by proportion, mixed uniformly, pressurized, formed and dried. The content of the calcium fluoride in the fluorite fine powder is more than 90%. The weight ratio of the water to silicon dioxide in the sodium silicate adhesive is 1:1. The fluorite powder pressing block and the preparation method have the beneficial effects that the fluorite powder pressing block prepared by the method has the CaF2 with the content of 91.4%, belongs to the specification of 90 degree fluorite and is slightly higher than the fluorite purchase standard (85 degree) of the stainless steel smelting plant; furthermore, the content of the SiO2 is only 4.00% and is lower about 8.0% than the normal fluorite content; and according to 30 batches of site tests of steelmaking AOD furnace, compared results of fluorite powder pressing block with the normal fluorite results, the fluorite powder pressing block is slightly better than the normal fluorite and the usage amount is lowered, which indicates that the fluorite powder pressing block completely meets the stainless steel smelting requirement of the AOD furnace.
Description
Technical field
The invention belongs to the STEELMAKING PRODUCTION technical field, be specifically related to a kind of fluorite powder pressing block and preparation method thereof and the application in the AOD converter steelmaking.
Background technology
Fluorite has important application in Steel industry is produced, as adding natural fluorite in the STEELMAKING PRODUCTION, can reduce fusing point, the dissolving of acceleration lime of lime, improve the flowability of basic slag, improve desulfurization, dephosphorization efficient simultaneously, strengthen the interface reflection ability between the slag steel, play help, flux, fluxing effect.But owing to exploit for a long time, need the natural fluorite of higher-grade of usefulness in the steel-making, quite in short supply on the market, mine resources is overexploitation, and turnout can not satisfy the smelting industry needs; And a large amount of low-grade fluorites ore deposit can't be used again in STEELMAKING PRODUCTION, causes a large amount of low-grade fluorite ore resources wastes.
Summary of the invention
The objective of the invention is: substitute---fluorite powder pressing block and preparation method thereof that the natural fluorite of using in a kind of Steel industry of higher-grade is provided.
For achieving the above object, the technical scheme of employing is: the preparation method of fluorite powder pressing block is characterized in that: add the smart powder of fluorite, fluorite powder by proportioning, and the bubble flower alkali tackiness agent that accounts for gross weight 10%, stir, extrusion forming, oven dry.
The content of Calcium Fluoride (Fluorspan) reaches more than 90% in the smart powder of described fluorite.
The weight ratio of water and silicon-dioxide is 1: 1 in the described bubble flower alkali tackiness agent.
The invention has the beneficial effects as follows: by the fluorite powder pressing block that present method makes, CaF
2Content is high and stable, reaches 90 ° of fluorite specifications, a little more than stainless steel smelting factory fluorite buying standard (85 °), and SiO
2Content only 4.00%, about 8% level of more common fluorite is low.The test of AOD smelting furnace 30 heats shows that fluorite powder pressing block meets the requirement of AOD stove smelting stainless steel fully.
Embodiment
Embodiment 1
Add in the container and fluoridize the smart powder 93.24kg of calcium contents 97% fluorite, Calcium Fluoride (Fluorspan) content 60% fluorite powder 6.8kg, bubble flower alkali tamanori 10kg YJ150 disk stirrer stirring 15min, ZZXM-4 four roller secondary adding pressure type ball press compression mouldings, it is spherical to be 50-60mm, at temperature 180-200 ℃ of oven dry 1h, make fluorite powder pressing block CaF
2Content reaches more than 90%.
Embodiment 2
Add the smart powder 64.87kg of fluorite of Calcium Fluoride (Fluorspan) content 97%, the fluorite powder 35.13kg and the bubble flower alkali tamanori 10kg of Calcium Fluoride (Fluorspan) content 60% in the container, by embodiment 1 identical method stir, extrusion forming, oven dry, make fluorite powder pressing block CaF
2Content is more than 80%.
Described bubble flower alkali tamanori composition is water 50%, silicon-dioxide 50%.
Because natural fluorite quality fluctuation, it is unstable to cause stainless steel to be produced, and the content of Calcium Fluoride (Fluorspan) can require preparation as required according to client's difference in the fluorite powder pressing block.The fluorite powder pressing block that makes as stated above on probation in the stainless steel AOD converter, fluorite powder pressing block composition (weight %) analytical results on probation is: CaF
291.40%; S 0.157%; P 0.012%; SiO
24.00%.Through smelting AOD stove 30 heat test in places, steel grade is austenite and ferrite, facts have proved that using behind the fluorite powder pressing block AOD stove to smelt relevant index all slightly is better than using common fluorite.30 heat terminal point compositions all hit, and terminal point sulphur composition can reach 0.001%, and fluorite powder pressing block meets the requirement of AOD stove smelting stainless steel.
Claims (3)
1. the preparation method of a fluorite powder pressing block is characterized in that: add the smart powder of fluorite, fluorite powder by proportioning, and the bubble flower alkali tackiness agent that accounts for gross weight 10%, stir, extrusion forming, oven dry.
2. according to the preparation method of the described a kind of fluorite powder pressing block of claim 1, it is characterized in that: the content of Calcium Fluoride (Fluorspan) reaches more than 90% in the smart powder of described fluorite.
3. according to the preparation method of the described a kind of fluorite powder pressing block of claim 1, it is characterized in that: the weight ratio of water and silicon-dioxide is 1: 1 in the described bubble flower alkali tackiness agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100510179A CN101565770A (en) | 2009-05-12 | 2009-05-12 | Fluorite powder pressing block and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100510179A CN101565770A (en) | 2009-05-12 | 2009-05-12 | Fluorite powder pressing block and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101565770A true CN101565770A (en) | 2009-10-28 |
Family
ID=41282131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100510179A Pending CN101565770A (en) | 2009-05-12 | 2009-05-12 | Fluorite powder pressing block and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101565770A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634718A (en) * | 2012-04-28 | 2012-08-15 | 广州德曼冶金材料有限公司 | Preparation process for organically-combined fluorite ball |
| CN102703686A (en) * | 2012-05-02 | 2012-10-03 | 佛冈德宇萤石球有限公司 | Production process of inorganically combined fluorite balls |
| CN103789511A (en) * | 2014-01-22 | 2014-05-14 | 红安县生伦冶金矿产科技实业有限公司 | Fluorite spheres and preparation method thereof |
| CN110202823A (en) * | 2019-05-29 | 2019-09-06 | 广德林峰科技有限公司 | A kind of pressure setting of Fluorite pellet |
-
2009
- 2009-05-12 CN CNA2009100510179A patent/CN101565770A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634718A (en) * | 2012-04-28 | 2012-08-15 | 广州德曼冶金材料有限公司 | Preparation process for organically-combined fluorite ball |
| CN102634718B (en) * | 2012-04-28 | 2013-10-30 | 广州德曼冶金材料有限公司 | Preparation process for organically-combined fluorite ball |
| CN102703686A (en) * | 2012-05-02 | 2012-10-03 | 佛冈德宇萤石球有限公司 | Production process of inorganically combined fluorite balls |
| CN103789511A (en) * | 2014-01-22 | 2014-05-14 | 红安县生伦冶金矿产科技实业有限公司 | Fluorite spheres and preparation method thereof |
| CN110202823A (en) * | 2019-05-29 | 2019-09-06 | 广德林峰科技有限公司 | A kind of pressure setting of Fluorite pellet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101760276B (en) | Binder for coke powder molding and application method thereof | |
| CN101560586B (en) | Compound dephosphorization agent with converter slag as raw material and preparing method thereof | |
| CN103667692B (en) | A kind of combined Fluorspar Powder pelletizing binder and application thereof | |
| CN103030311B (en) | A kind of high additive blast-furnace cement and preparation method thereof | |
| CN101565770A (en) | Fluorite powder pressing block and preparation method thereof | |
| CN102732680A (en) | Pre-smelting type iron calcium aluminate complex dreg dephosphorizing agent as well as preparation and application methods thereof | |
| CN101928806A (en) | Composite slagging agent for semi-steel making and preparation method thereof and semi-steel making method | |
| CN105399349A (en) | High-activity iron and steel slag powder and preparation method thereof | |
| CN102296153A (en) | Novel premelting dephosphorization agent for steel making and preparation method thereof | |
| CN104230354A (en) | Durable alkaline spraying-repairing material and applications | |
| CN102776325A (en) | Fluorite pellet and method for producing same | |
| CN108486315A (en) | It is a kind of using pneumatic steelmaking dedusting ash as dephosphorization of molten iron desulfurizing agent of base-material and preparation method thereof | |
| CN110526604A (en) | A kind of energy saving cement and preparation method thereof | |
| CN104651605B (en) | A kind of preparation method of cooled agglomerated pellet | |
| CN108002769A (en) | A kind of concrete prepared using desulfurizing byproduct | |
| CN101586184A (en) | A kind of fast binder that utilizes ferrous material to produce cooled agglomerated pellet | |
| CN105669054A (en) | Special composite liquid grinding aid for blast furnace slag and preparation method of special composite liquid grinding aid | |
| CN108048615A (en) | A kind of desulfurizing agent for hot-metal preprocess and preparation method thereof | |
| CN110357480A (en) | Low alkali accelerator of a kind of gunite concrete polymer and preparation method thereof | |
| CN104017985A (en) | Boron mud powder additive for improving performance of pelletizing ores and sintering ores and preparation method and application method of additive | |
| CN100422086C (en) | Synthotic fluospar | |
| CN102758054A (en) | Calcium-aluminium-silicon molten steel external refining agent and preparation method thereof | |
| CN108823404A (en) | A kind of iron ore pellets bentonite adhesive formula and preparation method thereof | |
| CN102399979A (en) | Manufacturing method of low-alkalinity agglomerate | |
| CN105036586A (en) | Iron-steel slag powder composite grinding aid and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091028 |