阅读说明：本技术 一种从工业废料中提取高纯锡的方法 (Method for extracting high-purity tin from industrial waste ) 是由 陈萍姬 周莉 陈华 于 2019-04-02 设计创作，主要内容包括：本发明公开了一种从工业废料中提取高纯锡的方法,将工业废料加入碳酸钠、氢氧化钠、硫酸盐进行混合,随后加入溶剂制成湿料,升温至650℃-800℃,使工业废料中金属锡的流动性最好,使金属锡与其他渣料分离；将上述金属锡与其他渣料通过20目筛子后放入50-60℃烘箱中烘干至恒重；在金属锡与其他渣料加入工业甘油水溶液搅匀,在恒温加热套内常压升温蒸煮,升温时间约4℃/min,蒸煮温度150℃-250℃,本发明所述的一种从工业废料中提取高纯锡的方法,通过加入多种化学制剂,能够将工业废料中的物质稀释完全,利用化学物质的特性,析出金属锡,利用该工艺能够使制得金属锡的纯度高达98%,同时操作简单,流程不复杂,具有很好的推广价值。(The invention discloses a method for extracting high-purity tin from industrial waste, which comprises the steps of adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste for mixing, then adding a solvent to prepare a wet material, heating to 650-800 ℃, and separating the metal tin from other slag materials, wherein the fluidity of the metal tin in the industrial waste is the best; passing the metallic tin and other slag materials through a 20-mesh sieve, and then putting the sieved metallic tin and other slag materials into a drying oven at 50-60 ℃ for drying until the weight is constant; adding industrial glycerin aqueous solution into metal tin and other slag materials, stirring uniformly, heating and stewing in a constant-temperature heating jacket at normal pressure, wherein the heating time is about 4 ℃/min, and the stewing temperature is 150-250 ℃, and the method for extracting high-purity tin from industrial waste can completely dilute substances in the industrial waste by adding various chemical agents, and can separate out the metal tin by utilizing the characteristics of the chemical substances, so that the purity of the prepared metal tin can reach 98 percent by utilizing the process, and the method is simple to operate, has uncomplicated flow and has good popularization value.)

1. A method for extracting high-purity tin from industrial waste is characterized by comprising the following steps:

s1, adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste, mixing, then adding a solvent to prepare a wet material, heating to 650-800 ℃, and enabling the metal tin in the industrial waste to have the best fluidity and to be separated from other slag materials;

s2, passing the metallic tin and other slag through a 20-mesh sieve, and drying in an oven at 50-60 ℃ to constant weight;

s3, adding industrial glycerol aqueous solution into the metallic tin and other slag materials, stirring uniformly, heating and stewing in a constant-temperature heating jacket at normal pressure for about 4 ℃/min at the stewing temperature of 150-250 ℃ for 2.5-5 h;

s4, dipping the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag;

s5, slowly adding the prepared tin metal into boiling water 30 times of the weight of the tin metal, quickly stirring and fully dissolving, then starting suction filtration by using a G3 sand core funnel, washing by using glycerol aqueous solution 40 times of the weight of the tin metal at the temperature of 400 ℃, carrying out suction filtration twice, washing by using distilled water, carrying out suction filtration twice again, and obtaining a filter cake which is pure metal tin after washing.

2. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the sodium hydroxide is in water solution, and the density is 5.130L/m.

3. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the industrial glycerol aqueous solution was dissolved in 12 times of ethyl acetate.

4. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate.

5. The process of claim 1, wherein the extraction of high purity tin from industrial waste comprises: the density of the glycerol aqueous solution is 3.75g/cm³。

6. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the concentration of the industrial glycerol aqueous solution is 0.9-1.2 mol/L.

Technical Field

The invention belongs to the field of new materials, and particularly relates to a method for extracting high-purity tin from industrial waste.

Background

Industrial waste refers to solid waste discharged during the production process of machinery, light industry and other industries. Such as cutting chips, grinding chips, waste molding sand and the like in the mechanical industry, activated carbon residues in the food industry, bricks, tiles, gravel, concrete fragments and the like in the silicate industry and the construction industry;

however, the prior art has the defects of complicated industrial waste treatment method, high cost and unsatisfactory purity of the prepared metal, and therefore, a method for extracting high-purity tin from industrial waste is provided.

Disclosure of Invention

The invention mainly aims to provide a method for extracting high-purity tin from industrial waste, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a method for extracting high-purity tin from industrial waste comprises the following steps:

s1, adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste, mixing, then adding a solvent to prepare a wet material, heating to 650-800 ℃, and enabling the metal tin in the industrial waste to have the best fluidity and to be separated from other slag materials;

s2, passing the metallic tin and other slag through a 20-mesh sieve, and drying in an oven at 50-60 ℃ to constant weight;

s3, adding industrial glycerol aqueous solution into the metallic tin and other slag materials, stirring uniformly, heating and stewing in a constant-temperature heating jacket at normal pressure for about 4 ℃/min at the stewing temperature of 150-250 ℃ for 2.5-5 h;

s4, dipping the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag;

s5, slowly adding the prepared tin metal into boiling water 30 times of the weight of the tin metal, quickly stirring and fully dissolving, then starting suction filtration by using a G3 sand core funnel, washing by using glycerol aqueous solution 40 times of the weight of the tin metal at the temperature of 400 ℃, carrying out suction filtration twice, washing by using distilled water, carrying out suction filtration twice again, and obtaining a filter cake which is pure metal tin after washing.

Preferably, the sodium hydroxide is in aqueous solution and has a density of 5.130L/m for thin film cultivation.

Preferably, the industrial glycerol aqueous solution is dissolved in 12 times of ethyl acetate.

Preferably, the sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate.

Preferably, the glycerol aqueous solution thereofThe density was 3.75g/cm³。

Preferably, the concentration of the industrial glycerol aqueous solution is 0.9 to 1.2 mol/L.

Compared with the prior art, the invention has the following beneficial effects: according to the method for extracting the high-purity tin from the industrial waste, various chemical agents are added, the substances in the industrial waste can be completely diluted, the metal tin is separated out by utilizing the characteristics of the chemical substances, the purity of the prepared metal tin can reach 98% by utilizing the process, and meanwhile, the method is simple to operate, simple in process and high in popularization value.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The method for extracting high-purity tin from industrial waste comprises the steps of adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste for mixing during preparation, wherein the sodium hydroxide is aqueous solution and has the density of 5.130L/m, then adding a solvent for preparing wet materials, heating to 650-800 ℃, and enabling the metal tin in the industrial waste to have the best fluidity and to be separated from other slag materials; passing the metallic tin and other slag materials through a 20-mesh sieve, and then putting the sieved metallic tin and other slag materials into a drying oven at 50-60 ℃ for drying until the weight is constant; adding industrial glycerol aqueous solution into metal tin and other slag materials, stirring uniformly, dissolving the industrial glycerol aqueous solution in 12 times of ethyl acetate, wherein sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate, heating and cooking at normal pressure in a constant-temperature heating sleeve, wherein the concentration of the industrial glycerol aqueous solution is 0.9-1.2mol/L, the heating time is about 4 ℃/min, the cooking temperature is 150-250 ℃, and the cooking time is 2.5-5 hours; soaking the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag; the prepared tin metal is slowly added into boiling water which is 30 times of the weight of the tin metal, the boiling water is quickly stirred and fully dissolved, then the filtration is started by using a G3 sand core funnel, the glycerol aqueous solution which is 40 times of the weight of the tin metal at the temperature of 400 ℃ is used for washing and filtration twice, the distilled water is used for washing and filtration twice again, and the attachments on the surface of the tin metal can be completely removed through filtration for many times, so that the purity is higher, and the obtained filter cake is pure tin metal after the washing is finished.