TW201107243A - Method for extracting vanadium from an vanadium/phosphorus containing iron - Google Patents

Abstract

A method for extracting vanadium from an vanadium/phosphorus containing iron comprises following steps: a blending step for mixing vanadium/phosphorus containing iron, sodium carbolate (Na2CO3) and calcic material to generate a mixture; a roasting step to roast the mixture for obtaining a clinker; a liberating step for mixing the clinker with water to liberate vanadium into the water from the clinker and further generating an liberating liquid through percolation; a dephosphorizing step for removing the phosphorus from the liberating liquid by dephosphorize pharmaceuticals to obtain a vanadic solution; and a depositing step for depositing reaction of vanadate ion to get the final product, vanadium pentoxide.

Description

201107243 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method for containing the iron filling #1, and more particularly to a method for simplifying the hunger process and reducing the loss of defects in the process. [Prior Art] In the engineering material t '鈒, the application is quite extensive. In the general steelmaking re-order, the hunger has the function of deoxidation and defluorination, and can also improve the strength, hardness and ductility of the steel. Therefore, in recent years, the industry has paid more and more attention to vanadium, and has invested in research to improve the recovery rate of the hunger. Common hunger-filled irons contain 24 to 2*7〇/discs, 5 to 9% vanadium, 3 to 5% chromium, 1 to 5% 5% nickel, 〇2〇 to 0.5% of bismuth and 50 to 55% of iron. Such ferrophosphorus is low in price and can be extracted by high-volume vanadium by general roasting, which makes the bismuth-containing phosphorus iron highly economical, but contains vanadium. The phosphorus content of ferrophosphorus is too high, and it is difficult to remove it in a general chemical manner in the process, which leads to a vanadium extraction efficiency of only 50 or less. Therefore, the decanting is the primary focus of the refinery process. In general, the vanadium-containing phosphorus iron extraction method uses the bismuth-phosphorus iron to be oxidized in an oxygen-containing environment and then reacted with sodium carbonate. Therefore, the conventional method for extracting vanadium from the hunthless phosphorus and iron will firstly contain vanadium-containing phosphorus. The iron is oxidized and calcined at a high temperature of 6 to 8 ° C for 4 to 6 hours, and then sodium carbonate is added for 2 to 3 hours of calcination. After high temperature roasting, the vanadium in the vanadium-containing ferrophosphorus can be converted into Sodium vanadate, which is a water-soluble salt, so that the vanadium in the vanadium-containing ferrophosphorus can be poured into the water as a vanadium ion type by simply pouring the water. Get a liquid, and finally, through the amine salt vanadium 201107243 or acid immersion method, the gorge ion is converted into bismuth pentoxide, making progress. However, during the calcination process, the phosphorus containing vanadium-phosphorus iron is also converted into 4 acid sodium, and the sodium phosphate is also a water-soluble salt, so the sulphide in the iron-containing dish will also appear in large numbers. In the decanting liquid, the decanting liquid is changed into a mixed solution containing a dish, and the phosphorus in the mixed solution is removed by the addition of a large amount of de-stone removing agent, which causes trouble in the refining process. The above-mentioned method for using the iron-plated iron tray in the above-mentioned 4, in the refining process, the _,, and the consumption of the burning process of the day, makes the refining process not only complicated and lengthy, but also requires a large refining cost. In addition, the phosphorus in the decanting liquid needs to be removed by a large amount of phosphorus removing agent, which not only increases the descaling cost, but also easily causes the precipitation of calcium vanadate to cause a loss of bismuth, thereby reducing the recovery rate of vanadium. Furthermore, during the roasting process, sodium carbonate will form a highly viscous fluid due to high temperature melting, and adhere to the kiln wall to cause the kiln phenomenon. In severe cases, it is necessary to stop the roasting to clean the kiln body, which not only causes the refining process. The troubles are also easy to cause damage to the kiln and reduce the service life of the kiln. • For the above reasons, the conventional method of extracting vanadium from vanadium, phosphorus and iron is indeed necessary. SUMMARY OF THE INVENTION The object of the present invention is to improve the disadvantages of the prior art to provide a method for extracting vanadium from vanadium, phosphorus and iron, in order to simplify the process of extracting and shortening the time for the preparation of the crucible. The method of extracting vanadium from phosphorus iron can shorten the baking time to effectively reduce the cost of the baking. A further object of the present invention is to provide a method for extracting vanadium from vanadium, phosphorus and iron, and 201107243 can reduce the amount of the phosphorus removal agent to save the cost of the phosphorus removal process. Another object of the present invention is to provide a method for extracting vanadium from vanadium, phosphorus and iron to reduce hunger loss and improve the recovery rate. Another object of the present invention is to provide a method for extracting vanadium from vanadium, phosphorus and iron, which can delay the formation of kilns due to high temperature of sodium carbonate, so as to prolong the use of the carcass. According to the method of the present invention, the method comprises the steps of: mixing a vanadium-containing ferrophosphorus, sodium carbonate (Na2CO3) and a calcium-containing auxiliary material uniformly to form a mixture; a calcining step, The mixture is subjected to calcination to obtain a clinker; a decanting step, the clinker is mixed with water, so that the hunger in the clinker is poured out of water, and then filtered to obtain a decanted liquid; In the phosphorus removal step, a dephosphorization agent is added to the decanting solution to obtain a hunger solution; and a Shenkai step is used to carry out a hunger reaction on the sulphate ion in the sputum solution to obtain pentoxide germanium. The above and other objects, features, and advantages of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; As shown in the figure, the method for frustrating a vanadium-containing phosphorus iron according to a preferred embodiment of the present invention comprises a mixing step S1, a calcining step S2, a pouring step S3, a dephosphorization step S4, and a vanadium precipitation step S5. . In the mixing step S1, the bismuth-containing phosphorus iron, the sodium carbonate (Na2C03) and the lysine are uniformly mixed to form a mixture, wherein the dance-containing auxiliary material is selected to be CaO, Ca(OH)2, CaCl2 or CaC03. The mixing step si 201107243 is preferably performed by first crushing and grinding the bismuth-containing phosphorus iron to increase the surface area of the vanadium-containing ferrophosphorus to uniformly mix with the two auxiliary materials to increase the mixing uniformity of the mixture. , wherein the addition amount of the sodium carbonate NhCO is #1_« (U to 3 times better) the amount of the added carbon steel Na2C〇3 is G.2 i ! times; the amount of the touch-containing material is 鈒The weight of the phosphorus iron is 3 times, and the amount of the calcium-containing auxiliary material is 〇2 to i times. The baking step S2

That is, to 3, the vanadium-containing ferrophosphorus, sodium carbonate (tanzan 3) and the mixture containing the material are subjected to money to obtain a dip. In this embodiment, the mixture is placed in a rotary kiln, and the reaction mechanism utilizes the difference between the hunger, the filling, the nano- and the ionic affinity of the ionic, and the reaction is excellent for the scorpion. In the dish ion, the affinity of the t-dissociation to the (iv) ion is better than that of the _, and further, the formation of -filled W and -Nodium, the chemical reaction formula is as shown in the a&amp;b formula. P4+6CaO+l〇〇2-&gt;2Ca3(P04)2................(8) 4V+2Na2C〇3+502-&gt;4NaV〇3+c〇2 .............(b)

In this way, the air can be transported in, and f S Weijing 'to facilitate the burning process, the burning, W ..., between: two more time =: when boiling water, to 3 Hours, the two. II.: calcium and water-soluble sodium vanadate, in the roasting + = ; =:, can be - iron transfer 提 refining costs, ^ large 'to reduce the process time and reduce it and The large ^ _ will be dissolved in water 4 acid dance, so that the vanadium and phosphorus in the vanadium-phosphorus iron of 201107243 is separated to simplify the phosphorus removal process, in addition, the added content contains a large amount of mascara, _ It has a high-hyun point and a low-stagnation dragon, which can increase the secret of the money, so that the carbon _ is not easily melted and adhered to the kiln wall to cause crusting, so as to prolong the service life of the f body.

The pouring step S3' is to mix the cooked clinker and the water in a pouring f, which is soluble in water +, and then transitions to obtain a decanting liquid. In step S3, the clinker is first subjected to thirst grinding and then poured out to increase the depreciation rate and the pouring speed. If the above (4) is a water-soluble salt, the hunger will dissolve in the water, respectively: the sulphate ion and the _ subtype exist in the water. The pouring step S3: the water is added in an amount of 3 to 4 times the weight of the clinker, and the preferred pouring time is 〇 5 to 2 hours, and the temperature in the pouring tank is preferably controlled at % C Between, after filtration, most of the phosphorus is removed by the solid of the dish acid' greatly reduces the phosphorus content of the decanted liquid t, so that the decanting liquid: sharp ratio (P / V) SG. 〇 5, Simply remove the disc with a simple program.

Therefore, the amount of the phosphorus removal agent can be reduced in the subsequent phosphorus removal step to save the cost of the large amount of the phosphorus removal agent. μ - the division _ step S4 is after the pouring green + adding _ agent to fill: a containing solution. Since most of the filling is in the above-mentioned pouring step S3, two ==... a small amount of addition is required. • The f example is selected from magnesium chloride and chlorine. The Wei ratio (p/v) in the solution containing the solution after ^ 4 treatment is only in the discussion 3". Between the two, due to the small amount of phosphorus removal agent in the phosphorus removal process, the loss of the ^ is significantly reduced, and the rate of hunger recovery is also improved. 201107243 The step S5 is carried out by reacting with the yoghurt ion in the solution containing the sulphate ion to obtain the bismuth pentoxide, which can be permeable to the amine salt or the acid sulphate. Oxidation and hunger, this embodiment is selected to contain ammonium chloride to form ammonium sulphate, and then deamination of the ammonium sulphate to obtain high purity pentoxide.

In order to determine the effect of the operating conditions of the present invention on the vanadium extraction efficiency, the experiment was carried out under the conditions of the weight ratio of the auxiliary material to the iron-containing iron, the calcination temperature and the calcination time, and the extraction efficiency under different control conditions was analyzed. The culture evaluates the optimal operating conditions of the refining method. In this example, the calcium-containing adjuvant is selected to be CaO for the following experiment. Referring to Table 1, the basic example is tested at different ratios of vanadium-containing ferro-phosphorus and auxiliary materials at a fixed calcination temperature and firing time, and found that the first, &quot; Under the reaction conditions, the recovery rate is higher than 7〇〇/0, and the recovery rate is the highest in the ratio of the second group and the fourth group, up to 85'5/. . According to the data of the results of the test, the optimum condition of the present invention is that the weight ratio of the auxiliary material to the vanadium-containing ferrophosphorus is 0.2 to 1. Table, different proportions of sputum-containing scales and auxiliary materials on the efficiency of hunger

201107243 The ratio is not the same as in this example. Under the fixed containing iron and auxiliary makeup, the test of different baking temperatures is carried out. It is found that the time rate of the first and the A_four groups is higher than the temperature.鸠, the recovery rate of the group is the highest, up to 85.5%. : The data is divided into 9〇5 fruit. The optimal firing temperature of the present invention is 700. The effect of efficiency is not included in the ''and does not contain slave warfare ΠΓΤΓ ΠΓΤΓ'''**f~-1--

The ratio of materials is 1 and 2, and the other is not tested. In this example, the test is carried out under the fixed temperature of vanadium-containing ferrophosphorus and ruthenium and money. Under the condition of cultivating, the recovered material was higher than the view, and the recovery rate of the third group and the fourth group was the highest, up to '/. ° According to the data of the group test results, the optimum condition of the present invention is that the burning time is 2 to 3 hours. The effect of the vanadium extraction efficiency.||Manpower n r everywhere T &quot;&quot;Τ Τ'--1

^~~^ I (10) /uu-uuu 5 7L 5 According to the above experimental series, the bismuth pentoxide extract of the present invention can be obtained: 201107243 The simmering condition is the second qing and the amount of the contact iron 3, and the simmering temperature is _ to The ratio is from 0.1 to hour; the preferred condition for firing is from 5 to 0.2, and the weight ratio of the chaotic and three-faced is from 3 hours to 900 ° c and the burning time is 2 by w. Can verify the hair in the process of burning

Adding calcium-containing auxiliary materials from ice does increase the recovery rate of the cockroaches by a known error. The recovery rate can reach 85%::=;===The negative impact caused by the refining process, and the second = the rate of the missing material However, it is necessary to shorten the process of daily burning to achieve a simplification of the narrative process; Carry out the method of (4) tr containing _ iron, by adding (4) material = after 'can make the disc to form a phosphate feed after the temple is removed, reduce the amount of the dump ==, and then reduce the amount of the side to reduce the 鈒Loss and deduct the effect of vanadium recovery. The method for stimulating hunger in the present invention can delay the formation of party phenomenon by high temperature of sodium carbonate by adding auxiliary materials containing a large amount of halogen, thereby achieving the effect of prolonging the service life of the kiln. Although the present invention has been disclosed in the above-described preferred embodiments, it is not intended to be used in the present invention. Any one of the skilled in the art will be able to make various changes and modifications with respect to the above embodiments without departing from the scope of the invention. The technical scope of the invention is the same as that defined in the appended patent application. 201107243 [Simplified description of the drawings] Fig. 1 is a flow chart showing the steps of the method for extracting vanadium from vanadium, phosphorus and iron according to the present invention. - [Main component symbol description] [Invention] S1 mixing step S2 baking step S3 pouring step S4 phosphorus removal step · S5 vanadium precipitation step

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Claims (1)

201107243 VII. Patent application scope: 1. A method for extracting vanadium from vanadium phosphorus iron, the steps thereof comprise: a mixing step of uniformly mixing vanadium-containing ferrophosphorus, sodium carbonate (Na2CO3) and a calcium-containing auxiliary material to form a mixture. a calcination step, the mixture is calcined to obtain a clinker; a decanting step, the clinker is mixed with water, so that the clinker is poured into the water, and filtered to be poured out a step of removing a vanadium-containing solution by adding a filler to the decanting solution; and a vanadium precipitation step to perform a sinking reaction on the vanadate ion in the vanadium-containing solution to obtain a solution Five oxidations. 2. The method for extracting vanadium from vanadium-containing phosphorus iron according to claim 1 of the patent application scope, wherein the calcium-containing auxiliary material is CaO, Ca(OH)2, CaCl2 or CaC03 3, according to the patent application scope 1 In the step, the weight of the vanadium phosphorus iron is 0.1 to 4, according to the third scope of the patent application, wherein the mixing step, the weight of the vanadium phosphorus iron is 0.2 to 5, according to the scope of the patent application, wherein the mixing step, the weight is 0.1 to 3 Times. 6. According to the scope of the patent application, in the mixing step, According to the method of the invention, the method for adding hunger to the hunger is to increase the amount of the sodium carbonate Na2C03 by three times. In the method described in the section, the amount of the sodium carbonate Na2C03 is 1 time. The method for containing the iron-filled iron extract L, the method for adding the calcium-containing auxiliary material is a method for extracting iron containing the vanadium-phosphorus iron, and the calcium-containing auxiliary material is added with vanadium-containing phosphorus. Iron - 13 — 201107243 The weight is 0.2 to 1 times. 7. The method according to claim 1, wherein the calcination step has a calcination temperature of 6 〇〇 to n〇〇t:. 8. The method according to claim 7, wherein the calcination step has a calcination temperature of 700 to 900 Torr. 9. The method according to claim 1, wherein the roasting step has a calcination time of 0.5 to 5 hours. The method of (4) iron contact according to Item 9 of the above-mentioned application, wherein the calcination step has a calcination time of 2 to 3 hours. The method for sharpening iron-containing iron according to item 1 of the patent scope of the invention, wherein in the pouring step, the clinker is first subjected to wet grinding and then poured out. 12. According to the patent scope of the patent, the method of _ iron mosquito extraction, wherein the water addition amount is 3 to 4 times the weight of the clinker. 13. The method according to claim 1, wherein the pouring time of the raking step is 0.5 to 2 hours. 14. The method according to claim 1, wherein the pouring temperature of the pouring step is 70 to 95. (:.