CN102703686B - Production process of inorganically combined fluorite balls - Google Patents
Production process of inorganically combined fluorite balls Download PDFInfo
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- CN102703686B CN102703686B CN 201210131761 CN201210131761A CN102703686B CN 102703686 B CN102703686 B CN 102703686B CN 201210131761 CN201210131761 CN 201210131761 CN 201210131761 A CN201210131761 A CN 201210131761A CN 102703686 B CN102703686 B CN 102703686B
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Abstract
The invention discloses a production process of inorganically combined fluorite balls. The production process of inorganically combined fluorite balls includes the steps of mixing well fluorite floatation powder, fluorite powder, inorganic binder, water and sodium fluosilicate, feeding the mixture into a high-power double-roller ball press to press the mixture into balls, and baking and cooling the balls. The inorganically combined fluorite balls have high grade (content of CaF2 is not less than 85wt%), stable quality and reasonable reaction specific surface area, and have performance and mechanical strength required by stainless steel and high-strength pressure-resisting (blast furnaces and nonferrous metals) smelting of superlow-carbon 300 series and above. By applying the inorganically combined fluorite balls to smelting of special steel, the stainless steel, the blast furnaces and the nonferrous metals, slagging speed can be increased, smelting time can be shortened, and production cost can be lowered.
Description
Technical field
The present invention relates to the inorganic preparation technology in conjunction with the fluorite ball.
Background technology
Fluorite has the fusing point of infusibility material in Metal smelting processes such as reducing special steel, stainless steel, iron alloy, promote slag to flow, make the fine characteristic of separating of slag and metal, at Melting of Special Steels, iron alloy production, change iron process and nonferrous metallurgical process in as fusing assistant, be widely used in desulfurization, dephosphorization, the forging property of enhancing metal and tensile strength etc.Smelting is CaF by fluorite ore general requirement grade
2the above lump ore of content>=70wt%, but be subject to resource limit, in be becoming tight high-grade fluorite lump ore day, and cost is unprecedented soaring, and the former nugget of fluorite, the powder of the oxide compounds such as low-grade, high FeO, MnO are a lot, and particularly with the nonferrous metals ore symbiosis, through the low-grade high impurity fluorite ore mine tailing of ore dressing generation, pile up like a mountain, hopeless, how waste resource and contaminate environment, dispose these wastes, and proposing a kind of effective method of resource becomes the problem that society extremely pays close attention to.
For effective head it off, at first low-grade fluorite piece, powder mine tailing are carried out to flotation, grade is brought up to CaF
2content>=80wt%, secondly the higher-grade fluorite powder after flotation being carried out to suitable agglomeration processes, so that it can be used for Metal smelting, must find a kind of rational technique so that the fluorite ball made has than higher-grade, higher-strength, to can be used for special steel, stainless steel, blast furnace, non-ferrous metal metallurgy urgently to be resolved hurrily.
Summary of the invention
The purpose of this invention is to provide the inorganic preparation technology in conjunction with the fluorite ball.
The technical solution used in the present invention is:
The inorganic preparation technology in conjunction with the fluorite ball comprises the following steps:
Fluorite powder, fluorite breeze, mineral binder bond, water, Sodium Silicofluoride are mixed, then this mixture is placed in to the powerful ball press of pair roller suppresses balling-up, then by ball cure, cooling getting final product.
The order number of described fluorite powder is the 100-300 order; Granularity≤the 3mm of fluorite breeze, in described fluorite breeze, the mass percent of the fluorite breeze of 1-3mm granularity is greater than 70% and be less than 100%.
Take fluorite breeze, fluorite powder quality and be 100% calculating, the mass percent of fluorite breeze is 0-10%, surplus is the fluorite powder.
The mass percent of mineral binder bond in mixture is 4-6%.
The mass percent of water in mixture is 3.5-4.5%.
The mass percent of Sodium Silicofluoride in mixture is 0.8-1.2%.
CaF in described fluorite powder
2content more than 85wt%, CaF in the fluorite breeze
2content more than 80wt%.
Described mineral binder bond is the sodium silicate solution that modulus is 3, and strength of solution is 40 ° of B é; The sodium silicate solution that is perhaps 2.8 for modulus, strength of solution is 50 ° of B é.
The volume of described fluorite ball is 12.51-36.56cm3, and density is 2.75-2.85g/cm3.
The invention has the beneficial effects as follows: the inorganic (CaF of high grade in conjunction with the fluorite ball of the present invention
2content>=85wt%), steady quality, have rational reaction specific surface area, has the Ultra-low carbon of the meeting 300 above stainless steels of series and high strength resistance to compression (blast furnace, non-ferrous metal) simultaneously and smelt desired performance and physical strength.Of the present inventionly inorganicly in conjunction with the fluorite ball, can be widely used in the smeltings such as special steel, stainless steel, blast furnace, non-ferrous metal, can raising slag speed, shorten the heat, reduce production costs.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further:
embodiment 1:
By fluorite powder (the order number is the 100-300 order), fluorite breeze, (granularity is≤3mm, in this fluorite breeze, the mass percent of the fluorite breeze of 1-3mm granularity be greater than 70% and be less than 100%), mineral binder bond, water, Sodium Silicofluoride (99% purity) mix in drum mixer, again this mixture is placed in to the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up, ball is placed at 350-400 ℃ of temperature and cures 3.0h again, naturally cool to room temperature and get final product.
Take fluorite powder, fluorite breeze quality and be 100% calculating, the mass percent of fluorite breeze is 10%.
CaF in described fluorite powder
2content>=88wt%, SiO
2content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
In described fluorite breeze, CaF
2content>=80wt%, SiO
2content≤14wt%, content≤0.15wt% of S, content≤0.06wt% of P.
Described mineral binder bond is the sodium silicate solution that modulus is 3, and strength of solution is 40 ° of B é, and the mass percent of sodium silicate solution in mixture is 5%.
The mass percent of Sodium Silicofluoride in mixture is 1%.
The mass percent of water in mixture is 4%.
embodiment 2:
Fluorite powder (the order number is the 100-300 order), sodium silicate solution, water, Sodium Silicofluoride (99% purity) are mixed in drum mixer, again this mixture is placed in to the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up, ball being placed in to temperature is to cure 3.0h under 350 ℃-400 ℃ again, naturally cools to room temperature and gets final product.
In described fluorite powder, CaF
2content>=88wt%, SiO
2content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
Described mineral binder bond is the sodium silicate solution that modulus is 2.8, and strength of solution is 50 ° of B é, and the mass percent of sodium silicate solution in mixture is 6%.
The mass percent of Sodium Silicofluoride in mixture is 1%.
The mass percent of water in mixture is 4%.
embodiment 3:
By fluorite powder (the order number is the 100-300 order), fluorite breeze, (granularity is≤3mm, in this fluorite breeze, the mass percent of the fluorite breeze of 1-3mm granularity be greater than 70% and be less than 100%), sodium silicate solution, water, Sodium Silicofluoride (99% purity) mix in drum mixer, again this mixture is placed in to the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up, ball being placed in to temperature is to cure 3.0h under 350 ℃-400 ℃ again, naturally cools to room temperature and gets final product.
Take fluorite powder, fluorite breeze quality and be 100% calculating, the mass percent of fluorite breeze is 6%.
In described fluorite powder, CaF
2content>=88wt%, SiO
2content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
In described fluorite breeze, CaF
2content>=80wt%, SiO
2content≤14wt%, content≤0.15wt% of S, content≤0.06wt% of P.
Described mineral binder bond is the sodium silicate solution that modulus is 2.8, and strength of solution is 50 ° of B é, and the mass percent of sodium silicate solution in mixture is 5.5%.
The mass percent of Sodium Silicofluoride in mixture is 1.0%.
The mass percent of water in mixture is 3.5%.
embodiment 4:
By fluorite powder (the order number is the 100-300 order), fluorite breeze, (granularity is≤3mm, in this fluorite breeze, the mass percent of the fluorite breeze of 1-3mm granularity be greater than 70% and be less than 100%), sodium silicate solution, water, Sodium Silicofluoride (99% purity) mix in drum mixer, again this mixture is placed in to the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up, ball being placed in to temperature is to cure 3.0h under 350 ℃-400 ℃ again, naturally cools to room temperature and gets final product.
Take fluorite powder, fluorite breeze quality and be 100% calculating, the mass percent of fluorite breeze is 3%.
In described fluorite powder, CaF
2content>=88wt%, SiO
2content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
In described fluorite breeze, CaF
2content>=80wt%, SiO
2content≤14wt%, content≤0.15wt% of S, content≤0.06wt% of P.
Described mineral binder bond is the sodium silicate solution that modulus is 3.0, and strength of solution is 40 ° of B é, and the mass percent of sodium silicate solution in mixture is 4.5%.
The mass percent of Sodium Silicofluoride in mixture is 1.2%.
The mass percent of water in mixture is 4.5%.
The inorganic ultimate compression strength in conjunction with the fluorite ball that embodiment 1-4 makes is at 5.5N-6.3 N ∕ mm
2between, by the fluorite ball, the place high in 2m freely dropped on steel plate, measures dropping strength, after tested, repeats to fall 4 times, all not broken.
Embodiment 1-4 is prepared inorganic in conjunction with the CaF in the fluorite ball
2content is all more than 85wt%.
Of the present inventionly inorganicly in conjunction with fluorite ball quality, reach the Ultra-low carbon 300 above stainless steels of series and desired performance and physical strength are smelted in high strength resistance to compression (blast furnace, non-ferrous metal).It can raising slag speed, shortens the heat, and reduces production costs.
The present invention is prepared inorganic in conjunction with the fluorite ball, and wherein contained binding agent is fallen by high temperature evaporation can in stove, can not cause molten steel to pollute, and nontoxic; In addition, of the present invention inorganic in conjunction with the alternative high-grade fluorite lump ore of fluorite ball for metallurgy industry, globule size is more unified, best in quality, is highly suitable for steel mill's digitizing and smelts.
The inorganic volume in conjunction with the fluorite ball that the present invention makes is between 12.51-36.56cm3, and density is at 2.75-2.85g/cm3.
The present invention's powerful ball press model of pair roller used is: XMQ-10.
Claims (1)
1. the inorganic preparation technology in conjunction with the fluorite ball, it is characterized in that: comprise the following steps: fluorite powder, fluorite breeze, mineral binder bond, water, Sodium Silicofluoride are mixed, again this mixture is placed in to the powerful ball press of pair roller and suppresses balling-up, then by ball cure, cooling getting final product; The order number of described fluorite powder is the 100-300 order; Granularity≤the 3mm of fluorite breeze, in described fluorite breeze, the mass percent of the fluorite breeze of 1-3mm granularity is greater than 70% and be less than 100%; Take fluorite breeze, fluorite powder quality and be 100% calculating, the mass percent of fluorite breeze is 0-10%, surplus is the fluorite powder; The mass percent of mineral binder bond in mixture is 4-6%; The mass percent of water in mixture is 3.5-4.5%; The mass percent of Sodium Silicofluoride in mixture is 0.8-1.2%; CaF in described fluorite powder
2content more than 85wt%, CaF in the fluorite breeze
2content more than 80wt%; Described mineral binder bond is the sodium silicate solution that modulus is 3, and strength of solution is 40 ° of B é; The sodium silicate solution that is perhaps 2.8 for modulus, strength of solution is 50 ° of B é; The volume of described fluorite ball is 12.51-36.56cm3, and density is 2.75-2.85g/cm3.
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| CN102703686B true CN102703686B (en) | 2013-12-18 |
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| CN103060525B (en) * | 2012-12-26 | 2015-02-25 | 佛冈德宇萤石球有限公司 | Process for high pressure compaction of fluorite ball with sodium silicate as binder |
| CN103146914B (en) * | 2013-04-06 | 2014-11-05 | 江西理工大学 | Cold-pressed high-strength fluorite pellet binder and use method thereof |
| CN104745831B (en) * | 2013-12-30 | 2017-12-01 | 大冶特殊钢股份有限公司 | A kind of carbonaceous Conductive Slag of electroslag steel smelting |
| CN103667692B (en) * | 2014-01-02 | 2016-01-27 | 嘉峪关市园通新型保温材料有限责任公司 | A kind of combined Fluorspar Powder pelletizing binder and application thereof |
| 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 |
| CN104451031B (en) * | 2014-10-24 | 2016-09-14 | 广德县瑞龙新型材料有限公司 | A kind of preparation technology of Fluorite pellet |
| CN104451190B (en) * | 2014-11-14 | 2016-09-14 | 广德林峰科技有限公司 | A kind of production technology of Fluorite pellet |
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| CN101407860B (en) * | 2008-11-20 | 2012-07-25 | 云南文山斗南锰业股份有限公司 | Cold press composite pellet binder |
| CN101565770A (en) * | 2009-05-12 | 2009-10-28 | 上海申燃物资有限公司 | Fluorite powder pressing block and preparation method thereof |
| CN101899566B (en) * | 2009-05-27 | 2012-05-30 | 宝山钢铁股份有限公司 | High polymer binder for cold bond pellet and preparation method thereof |
| CN101863504B (en) * | 2010-06-09 | 2012-05-23 | 鞍山市量子炉材集团有限公司 | Foamed high-purity fluorite and production process thereof |
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