CN102703686A - Production process of inorganically combined fluorite balls - Google Patents
Production process of inorganically combined fluorite balls Download PDFInfo
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- CN102703686A CN102703686A CN2012101317611A CN201210131761A CN102703686A CN 102703686 A CN102703686 A CN 102703686A CN 2012101317611 A CN2012101317611 A CN 2012101317611A CN 201210131761 A CN201210131761 A CN 201210131761A CN 102703686 A CN102703686 A CN 102703686A
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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 preparation technology of inorganic combination fluorite ball.
Background technology
Fluorite has the fusing point of infusibility material in the Metal smelting processes such as reducing special steel, stainless steel, iron alloy; Promote slag to flow; Make the characteristic of slag and metal well separated; In special steel smelting, iron alloy production, change iron process and nonferrous metallurgical process,, be widely used in desulfurization, dephosphorization, the forging property of enhancing metal and tensile strength etc. as fusing assistant.Smelting uses fluorite ore general requirement grade to be CaF
2The above lump ore of content>=70wt%, but receive 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 oxide compounds such as low-grade, high FeO, MnO are a lot, and particularly pile up like a mountain through the low-grade high impurity fluorite ore deposit mine tailing of ore dressing generation with the nonferrous metals ore symbiosis; Hopeless; How waste resource and contaminate environment dispose these wastes, and proposing a kind of efficient resource method 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 flotation, grade is brought up to CaF
2Content>=80wt%; Secondly the higher-grade fluorite powder after the flotation being carried out suitable agglomeration handles; So that it can be used for Metal smelting, must find a kind of reasonable technology so that the fluorite ball that makes has than higher-grade, higher-strength, can be used for special steel, stainless steel, blast furnace, non-ferrous metal metallurgy and then need to be resolved hurrily.
Summary of the invention
The preparation technology who the purpose of this invention is to provide inorganic combination fluorite ball.
The technical scheme that the present invention taked is:
The preparation technology of inorganic combination fluorite ball may further comprise the steps:
Fluorite powder, fluorite breeze, mineral binder bond, water, Sodium Silicofluoride 98min are mixed, place the powerful ball press of pair roller to suppress balling-up this mixture again, again ball is cured, cools off and get final product.
The order number of said fluorite powder is the 100-300 order; Granularity≤the 3mm of fluorite breeze, in said fluorite breeze, the mass percent of the fluorite breeze of 1-3mm granularity is greater than 70% and less than 100%.
With the quality of fluorite breeze, fluorite powder be 100% to calculate, the mass percent of fluorite breeze is 0-10%, and 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 98min in mixture is 0.8-1.2%.
CaF in the described fluorite powder
2Content more than 85wt%, CaF in the fluorite breeze
2Content more than 80wt%.
Described mineral binder bond is that modulus is 3 sodium silicate solution, and strength of solution is 40 ° of B é; Perhaps be 2.8 sodium silicate solution for modulus, strength of solution is 50 ° of B é.
The volume of said fluorite ball is 12.51-36.56cm3, and density is 2.75-2.85g/cm3.
The invention has the beneficial effects as follows: (the CaF of high grade of inorganic combination fluorite ball of the present invention
2Content>=85wt%), steady quality has rational reaction specific surface area, have the Ultra-low carbon of the satisfying 300 above stainless steels of series and HS resistance to compression (blast furnace, non-ferrous metal) desired performance of smelting and physical strength simultaneously.Inorganic combination fluorite ball of the present invention can be widely used in smeltings such as special steel, stainless steel, blast furnace, non-ferrous metal, can raising slag speed, shorten the heat, and reduce production costs.
Embodiment
Below in conjunction with specific embodiment the present invention is done further explanation:
Embodiment 1:
(granularity is≤3mm with fluorite powder (the order number is the 100-300 order), fluorite breeze; In this fluorite breeze; The mass percent of the fluorite breeze of 1-3mm granularity is greater than 70% and less than 100%), mineral binder bond, water, Sodium Silicofluoride 98min (99% purity) mix in drum mixer; Again this mixture is placed the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up; Again ball is placed under the 350-400 ℃ of temperature and cure 3.0h, naturally cool to room temperature and get final product.
With the quality of fluorite powder, fluorite breeze be 100% to calculate, the mass percent of fluorite breeze is 10%.
CaF in the described fluorite powder
2Content>=88wt%, SiO
2Content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
In the described fluorite breeze, CaF
2Content>=80wt%, SiO
2Content≤14wt%, content≤0.15wt% of S, content≤0.06wt% of P.
Described mineral binder bond is that modulus is 3 sodium silicate solution, 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 98min 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 98min (99% purity) are mixed in drum mixer; Again this mixture is placed the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up; Again ball being placed temperature is to cure 3.0h under 350 ℃-400 ℃, naturally cools to room temperature and gets final product.
In the described fluorite powder, CaF
2Content>=88wt%, SiO
2Content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
Described mineral binder bond is that modulus is 2.8 sodium silicate solution, 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 98min in mixture is 1%.
The mass percent of water in mixture is 4%.
Embodiment 3:
(granularity is≤3mm with fluorite powder (the order number is the 100-300 order), fluorite breeze; In this fluorite breeze; The mass percent of the fluorite breeze of 1-3mm granularity is greater than 70% and less than 100%), sodium silicate solution, water, Sodium Silicofluoride 98min (99% purity) mix in drum mixer; Again this mixture is placed the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up; Again ball being placed temperature is to cure 3.0h under 350 ℃-400 ℃, naturally cools to room temperature and gets final product.
With the quality of fluorite powder, fluorite breeze be 100% to calculate, the mass percent of fluorite breeze is 6%.
In the described fluorite powder, CaF
2Content>=88wt%, SiO
2Content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
In the described fluorite breeze, CaF
2Content>=80wt%, SiO
2Content≤14wt%, content≤0.15wt% of S, content≤0.06wt% of P.
Described mineral binder bond is that modulus is 2.8 sodium silicate solution, 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 98min in mixture is 1.0%.
The mass percent of water in mixture is 3.5%.
Embodiment 4:
(granularity is≤3mm with fluorite powder (the order number is the 100-300 order), fluorite breeze; In this fluorite breeze; The mass percent of the fluorite breeze of 1-3mm granularity is greater than 70% and less than 100%), sodium silicate solution, water, Sodium Silicofluoride 98min (99% purity) mix in drum mixer; Again this mixture is placed the powerful ball press of the pair roller (linear pressure of machine: 2.5t/cm) compacting balling-up; Again ball being placed temperature is to cure 3.0h under 350 ℃-400 ℃, naturally cools to room temperature and gets final product.
With the quality of fluorite powder, fluorite breeze be 100% to calculate, the mass percent of fluorite breeze is 3%.
In the described fluorite powder, CaF
2Content>=88wt%, SiO
2Content≤9wt%, content≤0.1wt% of S, content≤0.06wt% of P.
In the described fluorite breeze, CaF
2Content>=80wt%, SiO
2Content≤14wt%, content≤0.15wt% of S, content≤0.06wt% of P.
Described mineral binder bond is that modulus is 3.0 sodium silicate solution, 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 98min in mixture is 1.2%.
The mass percent of water in mixture is 4.5%.
The ultimate compression strength of the inorganic combination fluorite ball that embodiment 1-4 makes is at 5.5N-6.3 N ∕ mm
2Between, the fluorite ball in high local freely the dropping on the steel plate of 2m, is measured dropping strength, through test, repeat to fall 4 times, all not broken.
CaF in the prepared inorganic combination fluorite ball of embodiment 1-4
2Content is all more than 85wt%.
Inorganic combination fluorite ball quality of the present invention reaches the Ultra-low carbon 300 above stainless steels of series and desired performance and physical strength are smelted in HS resistance to compression (blast furnace, non-ferrous metal).It can raising slag speed, shortens the heat, and reduces production costs.
The prepared inorganic combination fluorite ball of the present invention, wherein contained sticker is fallen by high temperature evaporation in stove, can, can not cause molten steel to pollute, and nontoxic; In addition, the alternative high-grade fluorite lump ore of inorganic combination fluorite ball of the present invention is used for metallurgy industry, and globule size is more unified, and is best in quality, is highly suitable for steel mill's digitizing and smelts.
The volume of the inorganic combination fluorite ball that the present invention makes is between 12.51-36.56cm3, and density is at 2.75-2.85g/cm3.
The used powerful ball press model of pair roller of the present invention is: XMQ-10.
Claims (9)
1. the preparation technology of inorganic combination fluorite ball; It is characterized in that: may further comprise the steps: fluorite powder, fluorite breeze, mineral binder bond, water, Sodium Silicofluoride 98min are mixed; Place the powerful ball press of pair roller to suppress balling-up this mixture again, again ball is cured, cools off and get final product.
2. the preparation technology of inorganic combination fluorite ball according to claim 1 is characterized in that: the order number of said fluorite powder is the 100-300 order; Granularity≤the 3mm of fluorite breeze, in said fluorite breeze, the mass percent of the fluorite breeze of 1-3mm granularity is greater than 70% and less than 100%.
3. the preparation technology of inorganic combination fluorite ball according to claim 1 is characterized in that: with the quality of fluorite breeze, fluorite powder be 100% to calculate, the mass percent of fluorite breeze is 0-10%, and surplus is the fluorite powder.
4. the preparation technology of inorganic combination fluorite ball according to claim 1 is characterized in that: the mass percent of mineral binder bond in mixture is 4-6%.
5. the preparation technology of inorganic combination fluorite ball according to claim 1 is characterized in that: the mass percent of water in mixture is 3.5-4.5%.
6. the preparation technology of inorganic combination fluorite ball according to claim 1 is characterized in that: the mass percent of Sodium Silicofluoride 98min in mixture is 0.8-1.2%.
7. the preparation technology of inorganic combination fluorite ball according to claim 1 is characterized in that: CaF in the described fluorite powder
2Content more than 85wt%, CaF in the fluorite breeze
2Content more than 80wt%.
8. the preparation technology of inorganic combination fluorite ball according to claim 4 is characterized in that: described mineral binder bond is that modulus is 3 sodium silicate solution, and strength of solution is 40 ° of B é; Perhaps be 2.8 sodium silicate solution for modulus, strength of solution is 50 ° of B é.
9. the preparation technology of inorganic combination fluorite ball according to claim 1 is characterized in that: the volume of said fluorite ball is 12.51-36.56cm3, and density is 2.75-2.85g/cm3.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103060525A (en) * | 2012-12-26 | 2013-04-24 | 佛冈德宇萤石球有限公司 | Process for high pressure compaction of fluorite ball with sodium silicate as binder |
CN103146914A (en) * | 2013-04-06 | 2013-06-12 | 江西理工大学 | Cold-pressed high-strength fluorite pellet binder and use method thereof |
CN103667692A (en) * | 2014-01-02 | 2014-03-26 | 嘉峪关市园通新型保温材料有限责任公司 | Combined fluorite powder palletizing adhesion agent 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 |
CN104451190A (en) * | 2014-11-14 | 2015-03-25 | 广德林峰科技有限公司 | Process for producing fluorite ball |
CN104451031A (en) * | 2014-10-24 | 2015-03-25 | 广德县瑞龙新型材料有限公司 | Process for preparing fluorite ball |
CN104745831A (en) * | 2013-12-30 | 2015-07-01 | 大冶特殊钢股份有限公司 | Carbon conductive slag for electroslag steel smelting |
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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 |
CN101863504A (en) * | 2010-06-09 | 2010-10-20 | 鞍山市量子炉材集团有限公司 | Foamed high-purity fluorite and production process thereof |
CN101899566A (en) * | 2009-05-27 | 2010-12-01 | 宝山钢铁股份有限公司 | High polymer binder for cold bond pellet and preparation method thereof |
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CN101407860A (en) * | 2008-11-20 | 2009-04-15 | 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 |
CN101899566A (en) * | 2009-05-27 | 2010-12-01 | 宝山钢铁股份有限公司 | High polymer binder for cold bond pellet and preparation method thereof |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103060525A (en) * | 2012-12-26 | 2013-04-24 | 佛冈德宇萤石球有限公司 | Process for high pressure compaction of fluorite ball with sodium silicate as binder |
CN103146914A (en) * | 2013-04-06 | 2013-06-12 | 江西理工大学 | Cold-pressed high-strength fluorite pellet binder and use method thereof |
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 |
CN104745831A (en) * | 2013-12-30 | 2015-07-01 | 大冶特殊钢股份有限公司 | Carbon conductive slag for electroslag steel smelting |
CN103667692A (en) * | 2014-01-02 | 2014-03-26 | 嘉峪关市园通新型保温材料有限责任公司 | Combined fluorite powder palletizing adhesion agent and application thereof |
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 |
CN104451031A (en) * | 2014-10-24 | 2015-03-25 | 广德县瑞龙新型材料有限公司 | Process for preparing fluorite ball |
CN104451190A (en) * | 2014-11-14 | 2015-03-25 | 广德林峰科技有限公司 | Process for producing fluorite ball |
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