CN112024123B - Homogenization iron removal process for improving basalt fiber raw material - Google Patents
Homogenization iron removal process for improving basalt fiber raw material Download PDFInfo
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- CN112024123B CN112024123B CN202010784110.7A CN202010784110A CN112024123B CN 112024123 B CN112024123 B CN 112024123B CN 202010784110 A CN202010784110 A CN 202010784110A CN 112024123 B CN112024123 B CN 112024123B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/32—Magnetic separation acting on the medium containing the substance being separated, e.g. magneto-gravimetric-, magnetohydrostatic-, or magnetohydrodynamic separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
Abstract
The invention discloses a homogenizing iron removal process for improving basalt fiber raw materials, which comprises the following steps: step (1), adopting high-iron basalt minerals as basalt fiber raw materials; step (2), finely grinding the high-speed rail basalt minerals, wherein the grinding granularity is 200 meshes and accounts for 55-70%; after grinding, the mixture is added into dilute sulfuric acid solution (C=1-5%) and the liquid-solid ratio is 1:1, and fully mixing for 12-28h in a stirring tank; filtering and separating out solution and solid slag after the mixed solution is treated by acid; step (4), adding 10-50mg/L of magnetic fluid into the leaching solution to perform magnetic flocculation precipitation, forming suspended small particles in the solution, and finally removing the small particles through magnetic separation; and (5) fully mixing the solution from which the magnetic precipitate is removed with the solid slag in the step (3). The invention has simple process, wide sources of adopted raw materials and low production cost, so the waste generated in the whole process is very little, and the invention is green and pollution-free.
Description
Technical Field
The invention relates to the technical field of basalt fiber raw material treatment, in particular to a homogenization iron removal process for improving basalt fiber raw materials.
Background
Basalt is rock in which the inside of the volcanic erupted magma is foamed or compact after condensation, and is magma rock, also called igneous rock, from the viewpoint of the properties of geological rock. Basalt is an indispensable part of the crust, and has huge natural reserve. Experimental researches of related researchers show that the basalt fiber can be prepared from basalt as a raw material. The basalt fiber is a new mineral fiber, and although the stock basalt has huge accumulation on the earth, the discovery in related research and production practice proves that not all basalt can be used as the stock-drawing continuous basalt fiber. The quality of the basalt fiber raw material is generally that of SiO 2 The contents of Fe, ca, mg, etc. were evaluated. The Fe content is used as a main judgment parameter: preferably, the basalt fiber raw material has an iron content of 6-8%. However, because of the great difference between the iron content in basalt ores in various areas, the iron content is too highThe stability of the basalt melt fiberizing process is reduced, and the production is impossible due to the problems of broken wires and the like. Therefore, how to controllably reduce the iron content in basalt fiber raw materials and to require high applicability becomes a problem to be solved.
Disclosure of Invention
The invention aims to provide a homogenizing iron removal process for improving basalt fiber raw materials, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a homogeneous iron removal process for improving basalt fiber raw materials comprises the following steps:
step (1), adopting high-iron basalt minerals as basalt fiber raw materials;
step (2), finely grinding the high-speed rail basalt minerals, wherein the grinding granularity is 200 meshes and accounts for 55-70%; after grinding, the mixture is added into dilute sulfuric acid solution (C=1-5%) and the liquid-solid ratio is 1:1, and fully mixing for 12-28h in a stirring tank;
filtering and separating out the solution and solid slag after the mixed solution is treated by acid, and standing the leaching solution for a period of time, wherein the pH value of the solution tends to be neutral;
step (4), adding 10-50mg/L of magnetic fluid into the leaching solution to perform magnetic flocculation precipitation, forming suspended small particles in the solution, and finally removing the small particles through magnetic separation;
and (5) fully mixing the solution from which the magnetic precipitate is removed with the solid slag from the step (3), so as to ensure the invariance of other components except the iron of basalt, and drying the basalt at 65 ℃ for 24 hours to obtain qualified basalt fiber raw materials.
Preferably, the basalt mineral contains SiO 2 ：45-52%；FeO+Fe：10-15%；CaO：5-13%；MgO：6-12%。
Preferably, in the step (3), the acid treatment process is leaching at normal temperature.
Preferably, the leachate is subjected to magnetic flocculation to form small particles in suspension in the solution in an amount of about 5-15%.
Preferably, in the step (4), the magnetic product after magnetic flocculation is recovered by magnetic separation (600 GS).
Compared with the prior art, the invention has the beneficial effects that: the invention has simple process, wide sources of adopted raw materials and low production cost, the dilute sulfuric acid is adopted for treatment, after the magnetic fluid is subjected to magnetic flocculation for deironing, the solution and the solid slag are mixed and dried into a sample, and the magnetic fluid can be recycled continuously, so that the waste generated in the whole process is very little, and the method is green and pollution-free.
Detailed Description
The present invention is described in further detail below to enable those skilled in the art to practice the invention by reference to the specification.
The following description is made for different formulations:
example 1
A homogeneous iron removal process for improving basalt fiber raw materials comprises the following steps:
step (1), adopting high-iron basalt minerals as basalt fiber raw materials;
step (2), finely grinding the high-speed rail basalt minerals, wherein the grinding granularity is 200 meshes and accounts for 55%; after grinding, the mixture was added to a dilute sulfuric acid solution (c=2%) with a liquid-solid ratio of 1:1, and fully mixing for 12 hours in a stirring tank;
filtering and separating out the solution and solid slag after the mixed solution is treated by acid, and standing the leaching solution for a period of time, wherein the pH value of the solution tends to be neutral;
step (4), adding 20mg/L of magnetic fluid into the leaching solution to perform magnetic flocculation precipitation, forming suspended small particles in the solution, and finally removing the small particles through magnetic separation;
and (5) fully mixing the solution from which the magnetic precipitate is removed with the solid slag from the step (3), so as to ensure the invariance of other components except the iron of basalt, and drying the basalt at 65 ℃ for 24 hours to obtain qualified basalt fiber raw materials.
Example two
A homogeneous iron removal process for improving basalt fiber raw materials comprises the following steps:
step (1), adopting high-iron basalt minerals as basalt fiber raw materials;
step (2), finely grinding the high-speed rail basalt minerals, wherein the grinding granularity is 200 meshes and accounts for 60%; after grinding, the mixture was added to a dilute sulfuric acid solution (c=3%) with a liquid-solid ratio of 1:1, and fully mixing for 18h in a stirring tank;
filtering and separating out the solution and solid slag after the mixed solution is treated by acid, and standing the leaching solution for a period of time, wherein the pH value of the solution tends to be neutral;
step (4), adding 30mg/L of magnetic fluid into the leaching solution to perform magnetic flocculation precipitation, forming suspended small particles in the solution, and finally removing the small particles through magnetic separation;
and (5) fully mixing the solution from which the magnetic precipitate is removed with the solid slag from the step (3), so as to ensure the invariance of other components except the iron of basalt, and drying the basalt at 65 ℃ for 24 hours to obtain qualified basalt fiber raw materials.
Example III
A homogeneous iron removal process for improving basalt fiber raw materials comprises the following steps:
step (1), adopting high-iron basalt minerals as basalt fiber raw materials;
step (2), finely grinding the high-speed rail basalt minerals, wherein the grinding granularity is 200 meshes and accounts for 65%; after grinding, the mixture was added to a dilute sulfuric acid solution (c=5%) with a liquid-solid ratio of 1:1, and fully mixing for 24 hours in a stirring tank;
filtering and separating out the solution and solid slag after the mixed solution is treated by acid, and standing the leaching solution for a period of time, wherein the pH value of the solution tends to be neutral;
step (4), adding 40mg/L of magnetic fluid into the leaching solution to perform magnetic flocculation precipitation, forming suspended small particles in the solution, and finally removing the small particles through magnetic separation;
and (5) fully mixing the solution from which the magnetic precipitate is removed with the solid slag from the step (3), so as to ensure the invariance of other components except the iron of basalt, and drying the basalt at 65 ℃ for 24 hours to obtain qualified basalt fiber raw materials.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The homogenizing iron removing process for improving basalt fiber raw materials is characterized by comprising the following steps of:
step (1), adopting high-iron basalt minerals as basalt fiber raw materials;
step (2), finely grinding the high-speed rail basalt minerals, wherein the grinding granularity is 200 meshes and accounts for 55-70%; grinding, adding into 1-5% dilute sulfuric acid solution, wherein the liquid-solid ratio is 1:1, and fully mixing for 12-28h in a stirring tank;
filtering and separating out leaching liquid and solid slag after the mixed solution is treated by acid, and standing the leaching liquid for a period of time, wherein the pH value of the solution tends to be neutral;
step (4), adding 10-50mg/L of magnetic fluid into the leaching solution to perform magnetic flocculation precipitation, forming a suspended magnetic product in the leaching solution, and finally removing the magnetic product through magnetic separation;
and (5) fully mixing the solution from which the magnetic precipitate is removed with the solid slag from the step (3), so as to ensure the invariance of other components except the iron of basalt, and drying the basalt at 65 ℃ for 24 hours to obtain qualified basalt fiber raw materials.
2. The process for improving the uniform iron removal of basalt fiber raw materials according to claim 1, wherein the basalt mineral contains SiO 2 ：45-52%；FeO+Fe：10-15%；CaO：5-13%；MgO：6-12%。
3. The process for improving the homogenization of basalt fiber raw material to remove iron of claim 1, wherein in step (3), the acid treatment process is leaching at normal temperature.
4. The process for improving the uniform iron removal of basalt fiber raw materials according to claim 1, wherein the content of suspended small particles formed in a solution after the leaching solution is subjected to magnetic flocculation is 5-15%.
5. The process for improving the homogenization of basalt fiber raw materials to remove iron of claim 1, wherein in the step (4), the magnetic product after magnetic flocculation is recovered by 600GS magnetic separation.
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| US4199336A (en) * | 1978-09-25 | 1980-04-22 | Corning Glass Works | Method for making basalt glass ceramic fibers |
| RU2118300C1 (en) * | 1996-11-19 | 1998-08-27 | Людмила Григорьевна Асланова | Method and device for production of basalt fiber |
| CN101492243A (en) * | 2009-03-13 | 2009-07-29 | 宋朋泽 | Method for producing ultra-fine basalt continuous filament |
| CN101875129B (en) * | 2010-06-08 | 2012-01-25 | 中南大学 | Method for comprehensive utilization of high-iron bauxite |
| CN102786220B (en) * | 2012-08-07 | 2014-12-03 | 宋朋泽 | Production method for ultrafine continuous basalt fibers |
| CN105776878B (en) * | 2016-03-28 | 2018-10-09 | 四川力久知识产权服务有限公司 | A kind of preparation method of continuous basalt fiber |
| WO2019138307A1 (en) * | 2018-01-09 | 2019-07-18 | Kadam Subhash | Extraction of palladium from basalt |
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