CN103215486A - Method for preparing phosphorus iron alloy by utilizing high-phosphorus iron ore and medium and low-grade phosphorus ore - Google Patents

Method for preparing phosphorus iron alloy by utilizing high-phosphorus iron ore and medium and low-grade phosphorus ore Download PDF

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CN103215486A
CN103215486A CN2013101232482A CN201310123248A CN103215486A CN 103215486 A CN103215486 A CN 103215486A CN 2013101232482 A CN2013101232482 A CN 2013101232482A CN 201310123248 A CN201310123248 A CN 201310123248A CN 103215486 A CN103215486 A CN 103215486A
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phosphorus
ore
phosphate rock
phosphorus iron
grade
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CN103215486B (en
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李光辉
姜涛
张元波
张树辉
饶明军
欧阳崇钟
范晓慧
郭宇峰
陈许玲
黄柱成
杨永斌
许斌
李骞
朱忠平
游志雄
梁斌珺
曾精华
罗骏
刘臣
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Central South University
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Abstract

The invention discloses a method for preparing a phosphorus iron alloy by utilizing high-phosphorus iron ores and medium and low-grade phosphorus ores, and the method comprises the following steps of: uniformly mixing high-phosphorus oolitic hematites previously crushed into -3mm with the medium and low-grade phosphorus ores according to a certain proportion, and then agglomerating; carrying out reduction roasting on dried blocks by using coal as a reducing agent, wherein the roasting temperature is 1150-1200 DEG C, and the roasting time is 90-120 minutes; and grinding cooled reduction blocks to obtain a phosphorus iron alloy product. The method disclosed by the invention can be used for directly preparing the phosphorus iron alloy by taking poor oolitic hematites which are not effectively utilized at present and in an idle state and medium and low-grade phosphorus ore resources as raw materials, and has the advantages of short process flow, low cost, high product additional value, wide application prospect and easiness for industrialization realization.

Description

Utilize high-phosphorus iron ore and mid low grade phosphate rock to prepare the method for ferrorphosphorus
Technical field
The present invention relates to a kind of preparation method of ferrorphosphorus, particularly a kind of method of utilizing high-phosphorus iron ore and mid low grade phosphate rock to prepare ferrorphosphorus.
Background technology
In recent years, domestic Iron And Steel Industry development rapidly, cause iron ore price to go up day by day, and China is because high-quality iron ore deposit scarcity, complicated refractory ore utilization ratio is low, therefore domestic most of iron and steel enterprises high grade iron ores of states such as a large amount of high price import Australia, Brazil, India of having to have had a strong impact on the sound development of China's steel industry.The complicated refractory ore of development and use China is imperative.
The complicated difficult iron ore deposit that China has total amount to surpass 30,000,000,000 tons is not utilized effectively as yet, wherein high-phosphor oolitic hematite (being commonly called as " Ningxiang's formula " iron ore) accounts for about 1/9 of domestic iron ore deposit reserves, be distributed widely in Hunan, Hubei, Jiangxi, Sichuan, Guizhou, Guangxi and SOUTH OF GANSU area, now verified such ore deposit at China's reserves up to 4,000,000,000 tons (wherein the west place in Hubei oolitic hematite is about 2,200,000,000 tons), prospective reserves is above 10,000,000,000 tons.The development and use of such iron ore are subjected to extensive concern always.
High-phosphor oolitic hematite is one of the most difficult iron ore type of selecting smelting of generally acknowledging both at home and abroad at present.Its phosphorous height (0.4%~1.8%), iron grade lower (35%~50%), phosphorus in the iron ore is mainly composed and is stored in the collophanite, and it is mixed in together with the chamosite that is rich in ferric oxide, form the alternate oolith structure of concentric layered shell polysaccharide, the ferric oxide crystallite size is trickle in the ore, and complicated with gangue embedding cloth relation, the difficulty of dissociating.
Low based on the full iron grade of high-phosphor oolitic hematite, to the high characteristics of the deleterious foreign matter of phosphor equal size of steel product quality, numerous scientific and technical personnel put forward the key issue that phosphorus falls in iron at it and have carried out big quantity research.Main method has: conventional beneficiating method, chemical sorting method, steel-making dephosphorization method, biological lixiviation process, magnetizing roasting method, direct reduction roasting method etc.But result of study shows: adopt the iron ore concentrate iron grade of traditional ore-dressing technique gained low, iron recovery is low, problems such as harmful element P content height can't be used as iron-smelting raw material.Adopt the method for solid state reduction, add an amount of dephosphorizing agent at high-phosphor oolitic hematite, with the coal is that reductive agent carries out reducing roasting, adopts ore grinding-low intensity magnetic separation method to reclaim wherein metallic iron again, and this flow process can obtain the product of iron grade more than 90%, phosphorus content about 0.08%.Though this technology dephosphorization effect is good, the added value of the direct reducing metal of product iron powder is higher than iron ore concentrate, its processing cost is still higher, and is infeasible economically.
The prior art of handling high-phosphor oolitic hematite exists that iron concentrate grade is low, iron recovery is low, problems such as harmful element content height, processing cost height.Simultaneously, though prior art can be recycled iron component wherein, phosphorus is removed and is not utilized as harmful element.Therefore, its iron of comprehensive reutilization, phosphorus component, the exploitation high value added product is significant to the development and use of high-phosphor oolitic hematite.
Aspect phosphorus ore, China's phosphate rock resource reserves are big, account for 30% of world's phosphor resource, occupy the second place of the world.By the end of the year 2008, find out 177.62 hundred million tons of resource reserves, mainly be distributed in Yunnan (40.87 hundred million tons), Hubei (30.39 hundred million tons), Guizhou (28.03 hundred million tons), Hunan (20.44 hundred million tons) and Sichuan (16.37 hundred million tons), five provinces find out that total resources accounts for more than 76% of the whole nation.
Though domestic phosphate rock resource amount is bigger, rich ore is few, and lean ore is many.Whole nation phosphorus ore average grade only is 17%, and grade only accounts for 7% of total reserves, P greater than 30% rich ore 2O 5Grade is that the mid low grade phosphate rock below 26% accounts for 90%.For many years, phosphorate rock mining is based on rich ore, and the phosphate rock resource that selects along with rich ore and Yi Caiyi reduces day by day, and reserves consume fast.In order to satisfy the development of phosphate fertilizer phosphorus chemical industry, most of enterprises have begun low-grade transition in utilizing, explore the processing and utilization method and the approach of mid low grade phosphate rock, strengthen the degree of depth and the range of phosphor resource development and use.
Most of phosphorus ore must could satisfy phosphoric acid and high concentration phosphate fertilizer production requirement behind beneficiation enrichment, but there is following problem in the beneficiation enrichment of phosphorus ore: on the one hand, phosphorus ore is based on the appositional pattern phosphorite, free-milling ore is few, difficulty selects collophanite many, and the ore dressing difficulty is big, the beneficiation cost height; On the other hand, will lose a considerable amount of phosphorus in the ore dressing process, and the phosphorus ore grade is low more, concentrate grade is high more, and the loss of phosphorus is big more in the ore dressing process; In addition, a large amount of mine tailings that ore dressing stays have bigger environmental risk as not dealing carefully with, and can cause severe contamination to soil and water body environment; Also contain a large amount of phosphorus, magnesium and other elements in addition in the mine tailing and can not get effective utilization, cause resource to waste in a large number.
Kiln-process phosphoric acid can directly utilize mid low grade phosphate rock to produce high-concentration phosphoric acid.It adds bentonite with Rock Phosphate (72Min BPL), silica, carbonaceous reducing agent and makes the carbon element pelletizing.Phosphorous vapor is overflowed from pellet during about 1450 ℃ of reduction zone hot-gas temperature in rotary kiln, is oxidized to P 2O 5, emit heat simultaneously and supply with reduction reaction.Gaseous state P 2O 5Generate phosphoric acid after hydration, circulation absorbs the back and becomes strong phosphoric acid.But, cause loss, the P of reduction carbon in the pelletizing thus because reduction reaction and the required atmosphere of oxidizing reaction are conflicting 2O 5Reaction and problem such as the easy ring formation of low melting point, this has limited kiln-process phosphoric acid in industrial application.
The salt acid system is handled low-grade phosphate ore, in the process of decomposing phosphate rock by chlorhydric acid, by the CONTROL PROCESS condition, separate out the calcium chlorophosphate intermediate, decompose preparation phosphoric acid by calcium chlorophosphate then, low-grade phosphorus ore in can making full use of, adaptability to Rock Phosphate (72Min BPL) is strong, adopts organic solvent extraction, can reach the specification of quality of PHOSPHORIC ACID TECH.GRADE, and can utilize the waste white residue to produce siliceous fertilizer, realize the comprehensive utilization of resource.
Utilize wet process leaching low-grade phosphate ore production high-quality phosphoric acid aspect to obtain important progress, particularly tiny difficult ore dressing can be taked the directly way of extraction at crystal grain, its basic ideas are that phosphoric acid wet processing and associated minerals enrichment are combined, and shorten Production Flow Chart, reduce investment.But realize that large-scale industrial application still has many technical problems still unresolved.
Along with the phosphorus ore abundant ore source reduces day by day, the development and use of mid low grade phosphate rock are imperative, and the non-ore dressing of particularly developing mid low grade phosphate rock directly utilizes technology significant.There are problems such as environmental pollution is serious, technology is not mature enough in existing mid low grade phosphate rock treatment technology, remains further to be furtherd investigate.
Ferrophosphorus is a kind of grey, slightly glossiness alloy, and its main component is the metal mixture of iron and iron phosphide.Iron phosphide is formed by phosphorus and iron chemical combination, and molecular formula is generally Fe 3P, Fe 2P, FeP and FeP 2, chemically stable under the normal temperature is insoluble to acid, non-corrosive.
Ferrophosphorus is mainly derived from the production of electric furnace process yellow phosphorus, one ton of yellow phosphorus of every production, by-product ferrophosphorus 100kg~200kg.The system phosphorus general w of by-product ferrophosphorus (P)=18%~26%, w (Fe) ≈ 70% also contains a spot of silicon, manganese and residual carbon, sulphur etc.The main application of ferrophosphorus is the alloying constituent as metallurgy industry, also can be used for industries such as chemical industry, building materials, oil.
Adding ferrophosphorus can be simply and accurately adjust in the metal phosphorus content to the level of any needs.Atmospheric corrosion resistance steel, freight container are with steel with the high phosphorus steel plate of phosphorus as strengthening element, by add a certain amount of phosphorus and other some elements in steel, to improve the weather resistance of steel.Metal alloy with ferrophosphorus makes all has casting properties preferably.Ferrophosphorus added to produce phosphoric pig iron in the blast furnace, can be used for refining and produce a kind of free-cutting steel.High tensile steel plate is widely used in automotive industry, RP steel plate wherein, and promptly phosphorous (claim again to phosphorate, rephosphorization, phosphorization or high phosphorus) steel plate consumption is maximum, has accounted for 80% of car load high tensile steel plate consumption.
The ferrophosphorus ultrafine powder has good electrical conductivity, thermal conductivity, advantages such as distinctive rust protection, wear-resisting, strong adhesion, can improve the welding characteristic of coating property and heavy anticorrosion zinc-rich paint, reduce zinc-rich paint welding cutting and produce the zinc mist, improve Working environment, welcome by coating industry and applying unit.This product can partly substitute (20%~40%) zinc powder, is widely used in automobile, freight container, vessel, steel construction production electric conduction paint, and heavy anticorrosion zinc rich paint is the ideal product that coating industry reduces cost, updates.
In addition, ferrophosphorus has been successfully applied to produces Sodium phosphate dibasic and tertiary sodium phosphate etc., with the production method contrast that utilizes the soda ash neutralising phosphoric acid, can save sulphur, phosphor resource and the energy; Prepare electrode materials by ferrophosphorus and also obtained deep research.
Yet the byproduct that domestic ferrophosphorus is mainly derived from phosphorus production obtains through the hot stove remelting process of broken finishing method or ore deposit, is subjected to the restriction of electric furnace process phosphorus production scale, and the gained ferrophosphorus can't satisfy the demand of growing ferrophosphorus.Therefore develop a kind of new less energy-consumption, low cost, the output height, up-to-standard ferrophosphorus production technique is significant to the demand that satisfies domestic and international ferrophosphorus.
In sum, high-phosphor oolitic hematite is owing to ore character complexity, though prior art can be recycled iron component wherein, phosphorus is removed and is not utilized as harmful element, also has problems such as processing cost height, and this resource is not utilized effectively as yet; And mid low grade phosphate rock causes problems such as environmental pollution easily owing to the beneficiation cost height, and the non-ore dressing of mid low grade phosphate rock simultaneously directly utilizes technology still immature, can't realize effective industrial application.In order effectively to utilize this two kinds of difficult ores of complexity, satisfy growing ferrophosphorus demand simultaneously, special proposition the present invention.
Summary of the invention
Technical problem to be solved by this invention provides utilize high-phosphorus iron ore and the mid low grade phosphate rock that a kind of technology is simple, environmental pollution is little, production cost is low and prepares the method for ferrorphosphorus.
In order to solve the problems of the technologies described above, the method for utilizing high-phosphorus iron ore and mid low grade phosphate rock to prepare ferrorphosphorus provided by the invention, its concrete steps are as follows:
The first step: agglomeration
Be crushed in advance-high-phosphorus iron ore of 3mm and mid low grade phosphate rock by mass ratio 3~7:3~7 mixings after agglomeration;
Second step: reducing roasting
Dried briquetting coal carries out reducing roasting as reductive agent, and maturing temperature is 1150 ℃~1200 ℃, and roasting time is 90min~120min;
The 3rd step: the mill choosing separates
Cooled reduction agglomerate is not less than 90% through broken, ore grinding to accounting for mass percent less than the 0.074mm grade, and the concentrate that adopts low intensity magnetic separation to obtain is the thick ferrorphosphorus of the finished product.
Described mid low grade phosphate rock is P 2O 5Content is lower than 26% phosphate rock resource.
The magneticstrength of described low intensity magnetic separation is 900Oe~1300Oe.
Described high-phosphorus iron ore is a high-phosphor oolitic hematite, or adopts other high-phosphorus iron ores partly to substitute or the described high-phosphor oolitic hematite of replacing whole.
Adopt the utilize high-phosphorus iron ore and the mid low grade phosphate rock of technique scheme to prepare the method for ferrorphosphorus, its know-why is summarized as follows:
Make reductive agent with coal, iron-bearing mineral can be reduced to metallic iron more than 800 ℃; Phosphorus ore containing 1000 ℃~can be reduced and generate gaseous state P more than 1100 ℃ 2, gangue content SiO 2, Al 2O 3Can effectively promote the reduction of phosphorus ore containing, reduce the beginning reduction temperature of phosphorus ore containing; The metallic iron that reduction generates is active high, easy and P 2Chemical combination and generate ferrorphosphorus; Simultaneously, gaseous state P 2Be dissolved in the metallic iron and can reduce its fusing point, can produce Partial Liquid Phase when being higher than 1050 ℃, thereby promote the gathering of iron granule to grow up.The chemical reaction that above process mainly takes place is as follows:
3Fe 2O 3+CO=2Fe 3O 4+CO 2
Fe 3O 4+CO=3FeO+CO 2
FeO+CO=Fe+CO 2
2Ca 5(PO 4) 3F+9Al 2O 3+18SiO 2+15CO=9(CaO·Al 2O 3·2SiO 2)+CaF 2+3P 2+15CO 2
3Fe+1/2P 2=Fe 3P
2Fe+1/2P 2=Fe 2P
Two ore deposit reduction methods prepare in the ferrorphosphorus, and the iron grade of the thick ferrorphosphorus of acquisition can reach 70%~85%, and phosphorus content can reach 5%~20%, can reach the phosphorus content of electric furnace process yellow phosphorus by-product ferrophosphorus.
Technological merit of the present invention is:
1) be raw material with high-phosphor oolitic hematite and the mid low grade phosphate rock that still is in " dull " state at present, the direct ferrorphosphorus of preparation with high added value is for the development and use of these two kinds of difficult ores of complexity provide novel method; In addition, high-phosphor oolitic hematite also can adopt other high-phosphorus iron ores partly to substitute or replacing whole.
2) high-phosphorus iron ore inferior in the comprehensive reutilization raw material and iron, the phosphorus component in the mid low grade phosphate rock, and utilized gangue content SiO cleverly 2, Al 2O 3To phosphorus ore thing reductive promoter action;
3) the present invention adopts two ore deposit reduction methods directly to prepare ferrorphosphorus, rather than to adopt electric furnace yellow phosphorus, molten iron be raw material, and technology is simple, environmental pollution is little;
4) the present invention directly is reductive agent with the coal, does not rely on expensive metallurgical coke, can reduce under solid conditions, has characteristics such as reduction temperature is lower, the time is short, production cost is low;
5) the present invention can be according to the requirement of following process, by changing iron ore and the proportioning of Rock Phosphate (72Min BPL) and the content that the reducing roasting condition is adjusted iron, phosphorus in the crude iron phosphorus alloy flexibly.The iron grade of thick ferrorphosphorus can reach 70%~85%, and phosphorus content can reach 5%~20%, can reach the phosphorus content of electric furnace process yellow phosphorus by-product ferrophosphorus.
In sum, the present invention is that utilize high-phosphor oolitic hematite and the mid low grade phosphate rock that a kind of technology is simple, environmental pollution is little, production cost is low, added value of product is high prepares the method for ferrorphosphorus, has broad application prospects, and is easy to realize industrialization.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Fig. 2 is the backscattered electron figure of reducing roasting agglomerate.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment 1:
Referring to Fig. 1, be crushed in advance-high-phosphor oolitic hematite of 3mm and mid low grade phosphate rock carry out agglomeration after by mass ratio 4:6 mixing, mid low grade phosphate rock is P 2O 5Content is lower than 26% phosphate rock resource; Dried briquetting coal carries out reducing roasting as reductive agent, and maturing temperature is 1180 ℃, and roasting time is 100min; Cooled reduction agglomerate extremely accounts for 92.3% of mass percent less than the 0.074mm grade through broken, ore grinding, and the employing magneticstrength is that the low intensity magnetic separation of 1100Oe obtains the thick ferrorphosphorus of the finished product, and its iron grade is 79.2%, and phosphorus content is 14.8%.
Embodiment 2:
Referring to Fig. 1, be crushed in advance-high-phosphor oolitic hematite of 3mm and mid low grade phosphate rock carry out agglomeration after by mass ratio 7:3 mixing, mid low grade phosphate rock is P 2O 5Content is lower than 26% phosphate rock resource; Dried briquetting coal carries out reducing roasting as reductive agent, and maturing temperature is 1150 ℃, and roasting time is 120min; Cooled reduction agglomerate extremely accounts for 90% of mass percent less than the 0.074mm grade through broken, ore grinding, and the employing magneticstrength is that the low intensity magnetic separation of 900Oe obtains the thick ferrorphosphorus of the finished product, and its iron grade is 88.3%, and phosphorus content is 5.0%.
Embodiment 3:
Referring to Fig. 1, be crushed in advance-high-phosphor oolitic hematite of 3mm and mid low grade phosphate rock carry out agglomeration after by mass ratio 3:7 mixing, mid low grade phosphate rock is P 2O 5Content is lower than 26% phosphate rock resource; Dried briquetting coal carries out reducing roasting as reductive agent, and maturing temperature is 1200 ℃, and roasting time is 90min; Cooled reduction agglomerate extremely accounts for 94.8% of mass percent less than the 0.074mm grade through broken, ore grinding, and the employing magneticstrength is that the low intensity magnetic separation of 1300Oe obtains the thick ferrorphosphorus of the finished product, and its iron grade is 74.4%, and phosphorus content is 20.0%.
Embodiment 4:
Referring to Fig. 1, be crushed in advance-high-phosphorus iron ore of 3mm and mid low grade phosphate rock carry out agglomeration after by mass ratio 5:5 mixing, mid low grade phosphate rock is P 2O 5Content is lower than 26% phosphate rock resource; Dried briquetting coal carries out reducing roasting as reductive agent, and maturing temperature is 1160 ℃, and roasting time is 110min; Cooled reduction agglomerate extremely accounts for 97.4% of mass percent less than the 0.074mm grade through broken, ore grinding, and the employing magneticstrength is that the low intensity magnetic separation of 1000Oe obtains the thick ferrorphosphorus of the finished product, and its iron grade is 82.4%, and phosphorus content is 11.8%.
The main chemical compositions of raw material sees Table 1 among the embodiment 1~4:
Main chemical compositions/the % of table 1 raw material
Chemical ingredients TFe P 2O 5 SiO 2 Al 2O 3 CaO MgO
Western Hunan oolitic hematite 51.28 2.98 9.53 5.66 3.57 0.18
Certain high-phosphorus iron ore 47.79 2.57 17.32 6.33 4.78 0.29
Mid low grade phosphate rock 2.98 16.45 43.02 1.83 24.64 1.33
Fig. 2 is the backscattered electron figure of 600 times of the magnifications of reducing roasting agglomerate, and test conditions: the mass ratio of high-phosphor oolitic hematite and mid low grade phosphate rock is 4:6, and maturing temperature is 1200 ℃, and roasting time is 90min.Test-results: the Dark grey zone phosphorus content at point 1,2,3 places is Fe about 22% 2The P phase; The canescence zone phosphorus content at point 4,5,6 places is Fe about 15% 3The P phase.

Claims (4)

1. method of utilizing high-phosphorus iron ore and mid low grade phosphate rock to prepare ferrorphosphorus, it is characterized in that: its concrete steps are as follows:
The first step: agglomeration
Be crushed in advance-high-phosphorus iron ore of 3mm and mid low grade phosphate rock by mass ratio 3~7:3~7 mixings after agglomeration;
Second step: reducing roasting
Dried briquetting coal carries out reducing roasting as reductive agent, and maturing temperature is 1150 ℃~1200 ℃, and roasting time is 90min~120min;
The 3rd step: the mill choosing separates
Cooled reduction agglomerate extremely is not less than 90% less than the shared mass percent of 0.074mm grade through broken, ore grinding, and the concentrate that adopts low intensity magnetic separation to obtain is the thick ferrorphosphorus of the finished product.
2. the method for utilizing high-phosphorus iron ore and mid low grade phosphate rock to prepare ferrorphosphorus according to claim 1 is characterized in that: described mid low grade phosphate rock is P 2O 5Content is lower than 26% phosphate rock resource.
3. the method for utilizing high-phosphorus iron ore and mid low grade phosphate rock to prepare ferrorphosphorus according to claim 1 and 2 is characterized in that: the magneticstrength of described low intensity magnetic separation is 900Oe~1300Oe.
4. the method for utilizing high-phosphorus iron ore and mid low grade phosphate rock to prepare ferrorphosphorus according to claim 1 and 2, it is characterized in that: described high-phosphorus iron ore is a high-phosphor oolitic hematite, or adopts other high-phosphorus iron ores partly to substitute or the described high-phosphor oolitic hematite of replacing whole.
CN201310123248.2A 2013-04-10 2013-04-10 Method for preparing phosphorus iron alloy by utilizing high-phosphorus iron ore and medium and low-grade phosphorus ore Expired - Fee Related CN103215486B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397126A (en) * 2013-08-01 2013-11-20 河南豫中铁合金有限公司 Ferrophosphorous and preparation method thereof
CN104561765A (en) * 2013-10-13 2015-04-29 徐广哲 Iron alloy additive containing low titanium and phosphorus and use method of iron alloy additive
CN107377204A (en) * 2017-07-11 2017-11-24 甘肃酒钢集团宏兴钢铁股份有限公司 A kind of refractory iron ore closed circuit shaft roasting dry grinding dry separation craft online
CN109811125A (en) * 2019-01-21 2019-05-28 湖南邦普循环科技有限公司 The method of ferrorphosphorus and lithium compound is recycled from waste lithium iron phosphate material
CN110117745A (en) * 2019-05-30 2019-08-13 贵州大学 A method of ferrorphosphorus is prepared using mid low grade phosphate rock and copper ashes
CN114032439A (en) * 2021-11-23 2022-02-11 河南豫中新材料有限公司 Material and refining method for refining ferrophosphorus
CN114606379A (en) * 2022-03-04 2022-06-10 中南大学 Smelting method of high-phosphorus iron ore

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CN101693948A (en) * 2009-10-14 2010-04-14 中南大学 Method for preparing steel smelting furnace materials from phosphorus-containing globulitic hematite
CN103014315A (en) * 2012-12-28 2013-04-03 东北大学 Method for preparing high-phosphorus iron powder from high-phosphorus oolitic hematite

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CN1154418A (en) * 1996-01-11 1997-07-16 牟品文 Process for producing ferro-phosphorus
CN101693948A (en) * 2009-10-14 2010-04-14 中南大学 Method for preparing steel smelting furnace materials from phosphorus-containing globulitic hematite
CN103014315A (en) * 2012-12-28 2013-04-03 东北大学 Method for preparing high-phosphorus iron powder from high-phosphorus oolitic hematite

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397126A (en) * 2013-08-01 2013-11-20 河南豫中铁合金有限公司 Ferrophosphorous and preparation method thereof
CN103397126B (en) * 2013-08-01 2016-01-20 河南豫中铁合金有限公司 A kind of ferrophosphorus and preparation method thereof
CN104561765A (en) * 2013-10-13 2015-04-29 徐广哲 Iron alloy additive containing low titanium and phosphorus and use method of iron alloy additive
CN107377204A (en) * 2017-07-11 2017-11-24 甘肃酒钢集团宏兴钢铁股份有限公司 A kind of refractory iron ore closed circuit shaft roasting dry grinding dry separation craft online
CN107377204B (en) * 2017-07-11 2019-03-12 甘肃酒钢集团宏兴钢铁股份有限公司 Closed circuit shaft roasting is dry grinded dry separation craft online for a kind of refractory iron ore
CN109811125A (en) * 2019-01-21 2019-05-28 湖南邦普循环科技有限公司 The method of ferrorphosphorus and lithium compound is recycled from waste lithium iron phosphate material
CN109811125B (en) * 2019-01-21 2020-11-10 湖南邦普循环科技有限公司 Method for recovering ferro-phosphorus alloy and lithium compound from waste lithium iron phosphate material
CN110117745A (en) * 2019-05-30 2019-08-13 贵州大学 A method of ferrorphosphorus is prepared using mid low grade phosphate rock and copper ashes
CN114032439A (en) * 2021-11-23 2022-02-11 河南豫中新材料有限公司 Material and refining method for refining ferrophosphorus
CN114606379A (en) * 2022-03-04 2022-06-10 中南大学 Smelting method of high-phosphorus iron ore

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