CN108831663A - A kind of preparation method and device of ferrofluid for ore dressing - Google Patents
A kind of preparation method and device of ferrofluid for ore dressing Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000011554 ferrofluid Substances 0.000 title description 7
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000011553 magnetic fluid Substances 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 26
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims description 45
- 239000000498 cooling water Substances 0.000 claims description 37
- 239000011324 bead Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 12
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 8
- 239000004115 Sodium Silicate Substances 0.000 claims description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 10
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 6
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 6
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- JCCZVLHHCNQSNM-UHFFFAOYSA-N [Na][Si] Chemical compound [Na][Si] JCCZVLHHCNQSNM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/445—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a compound, e.g. Fe3O4
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1815—Cooling or heating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
技术领域technical field
本发明涉及磁流体制备技术领域，尤其涉及一种选矿用磁流体的制备方法及其装置。The invention relates to the technical field of magnetic fluid preparation, in particular to a method for preparing magnetic fluid for ore dressing and a device thereof.
背景技术Background technique
磁流体是一种既具有液体的流动性又具有固体磁性材料的磁性的功能材料，它是由直径为纳米量级（10nm）的磁性固体颗粒、基载液以及界面活性剂三者混合而成的一种稳定的胶状液体。该流体在静态时无磁性吸引力，当外加磁场作用时，才表现出磁性，正因如此，它才广泛应用于各种苛刻条件的磁性流体密封、减震、医疗器械、声音调节、光显示、磁流体选矿等领域。然而，目前常用的磁流体的制备工艺复杂、效率低、成本高昂，极大的限制了磁流体应用的推广，尤其是在选矿领域的应用。选矿过程中对磁流体的用量极大，相应的损失也比较大，因此需要制备工艺简单、效率高、成本低廉的制备工艺。传统的球磨制备方法直接对磁铁矿（Fe3O4）进行研磨，由于球磨机能量利用率低，在这一过程中所需时间长、能耗高，且Fe3O4会被氧化为Fe2O3，从而使制备的磁流体效果变差，因此有必要开发一种选矿用磁流体的制备方法及其装置来解决上述技术问题。Magnetic fluid is a functional material that has both the fluidity of a liquid and the magnetic properties of a solid magnetic material. It is a mixture of magnetic solid particles with a diameter of nanometers (10nm), a base carrier liquid, and a surfactant. A stable colloidal liquid. The fluid has no magnetic attraction when it is static, and it shows magnetism when an external magnetic field is applied. Because of this, it is widely used in magnetic fluid sealing, shock absorption, medical equipment, sound adjustment, and light display under various harsh conditions. , Magnetic fluid beneficiation and other fields. However, the preparation process of commonly used ferrofluids is complicated, low in efficiency, and high in cost, which greatly limits the promotion of ferrofluid applications, especially in the field of mineral processing. The amount of magnetic fluid used in the beneficiation process is extremely large, and the corresponding loss is also relatively large. Therefore, a preparation process with simple, high efficiency and low cost is required. The traditional ball mill preparation method directly grinds magnetite (Fe 3 O 4 ). Due to the low energy utilization rate of the ball mill, the process requires a long time and high energy consumption, and Fe 3 O 4 will be oxidized to Fe 2 O 3 , so that the effect of the prepared magnetic fluid becomes worse, so it is necessary to develop a method and device for preparing magnetic fluid for ore dressing to solve the above technical problems.
发明内容Contents of the invention
本发明的目的之一在于提供一种选矿用磁流体的制备方法，该方法适宜于制备选矿用磁流体，具有工艺简单、操作方便、制备效率高、节约成本的优点。One of the objectives of the present invention is to provide a method for preparing magnetic fluid for mineral processing, which is suitable for preparing magnetic fluid for mineral processing, and has the advantages of simple process, convenient operation, high preparation efficiency and cost saving.
为解决上述技术问题，本发明采用如下技术方案：In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:
一种选矿用磁流体的制备方法，其特征在于：包括如下步骤：A preparation method of ferrofluid for ore dressing, characterized in that: comprising the following steps:
步骤一：将研磨腔的搅拌装置与变频电机连接，研磨腔与物料循环装置连通，研磨腔外部加装冷却水循环装置；Step 1: Connect the stirring device of the grinding chamber to the frequency conversion motor, connect the grinding chamber to the material circulation device, and install a cooling water circulation device outside the grinding chamber;
步骤二：在研磨腔内填入氧化锆珠，冷却水循环装置内加入冷却水；Step 2: Fill the grinding chamber with zirconia beads, and add cooling water to the cooling water circulation device;
步骤三：在物料循环装置内加入按重量比计为95-85份的蒸馏水和5-15份的Fe3O4粉末搅拌均匀，得到Fe3O4粉末浆液，其中Fe3O4粉末的细度为200目；Step 3: Add 95-85 parts of distilled water and 5-15 parts of Fe 3 O 4 powder in the material circulation device and stir evenly to obtain Fe 3 O 4 powder slurry, wherein the Fe 3 O 4 powder fine The degree is 200 mesh;
步骤四：打开物料循环装置，使Fe3O4粉末浆液进入研磨腔，启动变频电机带动研磨腔的拨杆转动，通过变频器控制变频电机转速，对Fe3O4粉末浆液进行研磨；Step 4: Open the material circulation device, let the Fe 3 O 4 powder slurry enter the grinding chamber, start the frequency conversion motor to drive the lever of the grinding chamber to rotate, control the speed of the frequency conversion motor through the frequency converter, and grind the Fe 3 O 4 powder slurry;
步骤五：在研磨的同时，按先后顺序加入硅酸钠、六偏磷酸钠,铁粉、硅铁粉、油酸钠。Step 5: While grinding, add sodium silicate, sodium hexametaphosphate, iron powder, ferrosilicon powder, and sodium oleate in sequence.
进一步的，所述步骤二中加入的氧化锆珠为0.2-0.3mm的氧化锆珠和0.4-0.6mm的氧化锆珠按1：2的质量比例混合所得。Further, the zirconia beads added in the second step are obtained by mixing 0.2-0.3 mm zirconia beads and 0.4-0.6 mm zirconia beads in a mass ratio of 1:2.
进一步的，步骤五中硅酸钠、六偏磷酸钠、油酸钠的添加量分别按步骤二中每升Fe3O4粉末浆液计，其中硅酸钠为0.1~2g/L，六偏磷酸钠0.05~1g/L，油酸钠0~12g/L；铁粉按添加后整体固体含量在5-20%之间的量添加，硅铁粉按添加后整体固体含量在10-35%之间的量添加。Further, the addition amount of sodium silicate, sodium hexametaphosphate, and sodium oleate in step five is calculated according to each liter of Fe3O4 powder slurry in step two, wherein sodium silicate is 0.1 ~ 2g/L, and hexametaphosphoric acid Sodium 0.05~1g/L, sodium oleate 0~12g/L; iron powder is added according to the amount of the overall solid content between 5-20% after adding, and ferrosilicon powder is added according to the overall solid content after adding between 10-35% The amount added between.
本发明选矿用磁流体的制备方法工艺简单，设备结构简单、能耗低；采用纯铁粉和硅铁粉做为辅助材料，减少了制备过程中Fe3O4被氧化的现象，提高了选矿用磁流体的品质。The preparation method of the magnetic fluid for mineral processing of the present invention has simple process, simple equipment structure and low energy consumption; pure iron powder and ferrosilicon powder are used as auxiliary materials, which reduces the phenomenon of Fe3O4 being oxidized during the preparation process and improves the mineral processing efficiency . The quality of the ferrofluid used.
本发明的另一目的在于提供一种利用上述方法制备选矿用磁流体的装置。Another object of the present invention is to provide a device for preparing magnetic fluid for ore dressing using the above method.
为解决上述技术问题，本发明采用如下技术方案：一种选矿用磁流体的制备装置，其特征在于：包括研磨腔、位于研磨腔内的拨杆、通过传动轴与拨杆连接的变频电机、通过电缆线与变频电机连接的变频器及控制线路板，所述研磨腔外部设有冷却水循环装置，所述研磨腔腔体与物料循环装置连通。In order to solve the above technical problems, the present invention adopts the following technical solutions: a preparation device for magnetic fluid for mineral processing, characterized in that it includes a grinding chamber, a driving rod located in the grinding chamber, a frequency conversion motor connected to the driving rod through a transmission shaft, The frequency converter and the control circuit board are connected to the frequency conversion motor through the cable, the cooling water circulation device is arranged outside the grinding chamber, and the grinding chamber cavity is communicated with the material circulation device.
进一步地，所述冷却水循环装置包括套在研磨腔外部的冷却水夹层套通过冷却水管路与冷却水夹层套连接的冷却水池和冷却水循环泵；所述物料循环装置包括与研磨腔通过物料循环管路连接的混料斗、位于混料斗内的搅拌装置，物料循环管路中间设有物料循环泵。Further, the cooling water circulation device includes a cooling water interlayer jacket set outside the grinding chamber, a cooling water pool and a cooling water circulation pump connected to the cooling water interlayer jacket through a cooling water pipeline; the material circulation device includes a The mixing hopper connected with the road, the stirring device located in the mixing hopper, and the material circulation pump is arranged in the middle of the material circulation pipeline.
本发明选矿用磁流体的制备装置通过变频器调整变频电机转速，可以使拨杆达到一个相对平衡的转速，再利冷却水循环装置进行冷却，利用物料循环装置循环物料，可以大大提高选矿用磁流体的制备速度，同时可有效避免氧化锆珠的过快磨损，用具有设备投资少，能耗低，生产效率高，产品质量高的优点。The magnetic fluid preparation device for mineral processing of the present invention adjusts the speed of the variable frequency motor through a frequency converter, so that the lever can reach a relatively balanced rotational speed, and then uses the cooling water circulation device for cooling, and uses the material circulation device to circulate materials, which can greatly improve the magnetic fluid used for mineral processing. The preparation speed is high, and at the same time, it can effectively avoid the excessive wear of zirconia beads. It has the advantages of less equipment investment, low energy consumption, high production efficiency and high product quality.
附图说明Description of drawings
图1为本发明所述选矿用磁流体的制备装置结构示意图。Fig. 1 is a schematic structural diagram of a preparation device for ferrofluid for ore dressing according to the present invention.
图中符号说明：1研磨腔；2拨杆；3传动轴；4变频电机；5变频器；6控制线路板；7冷却水夹层套；8冷却水管路；9冷却水池；10冷却水循环泵；11物料循环管路；12混料斗；13搅拌装置；14物料循环泵。Explanation of symbols in the figure: 1 grinding chamber; 2 lever; 3 transmission shaft; 4 frequency conversion motor; 5 frequency converter; 6 control circuit board; 7 cooling water interlayer sleeve; 8 cooling water pipeline; 11 Material circulation pipeline; 12 Mixing hopper; 13 Stirring device; 14 Material circulation pump.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明的技术方案做进一步说明。The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
本发明提供一种选矿用磁流体的制备方法，包括如下步骤：The present invention provides a kind of preparation method of ferrofluid for ore dressing, comprising the following steps:
步骤一：将研磨腔的搅拌装置与变频电机连接，研磨腔与物料循环装置连通，研磨腔外部加装冷却水循环装置；Step 1: Connect the stirring device of the grinding chamber to the frequency conversion motor, connect the grinding chamber to the material circulation device, and install a cooling water circulation device outside the grinding chamber;
步骤二：在研磨腔内填入氧化锆珠，冷却水循环装置内加入冷却水；Step 2: Fill the grinding chamber with zirconia beads, and add cooling water to the cooling water circulation device;
步骤三：在物料循环装置内加入按重量比计为95-85份的蒸馏水和5-15份的Fe3O4粉末搅拌均匀，得到Fe3O4粉末浆液，其中Fe3O4粉末的细度为200目；Step 3: Add 95-85 parts of distilled water and 5-15 parts of Fe 3 O 4 powder in the material circulation device and stir evenly to obtain Fe 3 O 4 powder slurry, wherein the Fe 3 O 4 powder fine The degree is 200 mesh;
步骤四：打开物料循环装置，使Fe3O4粉末浆液进入研磨腔，启动变频电机带动研磨腔的拨杆转动，通过变频器控制变频电机转速，对Fe3O4粉末浆液进行研磨；Step 4: Open the material circulation device, let the Fe 3 O 4 powder slurry enter the grinding chamber, start the frequency conversion motor to drive the lever of the grinding chamber to rotate, control the speed of the frequency conversion motor through the frequency converter, and grind the Fe 3 O 4 powder slurry;
步骤五：在研磨的同时，按先后顺序加入硅酸钠、六偏磷酸钠,铁粉、硅铁粉、油酸钠。Step 5: While grinding, add sodium silicate, sodium hexametaphosphate, iron powder, ferrosilicon powder, and sodium oleate in sequence.
在本发明中，添加铁粉和硅铁粉做为辅助材料，减少了制备过程中Fe3O4被氧化的现象，提高了磁流体的品质。In the present invention, iron powder and ferrosilicon powder are added as auxiliary materials, which reduces the oxidation of Fe 3 O 4 during the preparation process and improves the quality of the magnetic fluid.
其中步骤二中加入的氧化锆珠为经过配级计算的氧化锆珠，由0.2-0.3mm的氧化锆珠和0.4-0.6mm的氧化锆珠按1：2的质量比例混合所得。The zirconia beads added in step 2 are graded and calculated zirconia beads, obtained by mixing 0.2-0.3mm zirconia beads and 0.4-0.6mm zirconia beads in a mass ratio of 1:2.
步骤五中各成分的添加量根据不同选矿磁流体的要求控制，其中硅酸钠、六偏磷酸钠、油酸钠的添加量分别按步骤二中每升Fe3O4粉末浆液计，其中硅酸钠为0.1~2g/L，六偏磷酸钠0.05~1g/L，油酸钠0~12g/L；铁粉按添加后整体固体含量在5-20%之间的量添加，硅铁粉按添加后整体固体含量在10-35%之间的量添加。The addition amount of each composition in the step five is controlled according to the requirement of different ore dressing magnetic fluids, wherein the addition amount of sodium silicate, sodium hexametaphosphate, and sodium oleate is calculated by every liter of Fe3O4 powder slurry in step two respectively, wherein silicon Sodium hexametaphosphate is 0.1~2g/L, sodium hexametaphosphate is 0.05~1g/L, sodium oleate is 0~12g/L; Add according to the amount of overall solid content between 10-35% after adding.
一种选矿用磁流体的制备装置，包括研磨腔1、位于研磨腔内的拨杆2、通过传动轴3与拨杆连接的变频电机4、通过电缆线与变频电机连接的变频器5及控制线路板6，所述研磨腔外部设有冷却水循环装置，所述研磨腔腔体与物料循环装置连通。所述冷却水循环装置包括套在研磨腔外部的冷却水夹层套7通过冷却水管路8与冷却水夹层套连接的冷却水池9和冷却水循环泵10；所述物料循环装置包括与研磨腔通过物料循环管路11连接的混料斗12、位于混料斗内的搅拌装置13，物料循环管路中间设有物料循环泵14。A preparation device for magnetic fluid for mineral processing, comprising a grinding chamber 1, a driving rod 2 located in the grinding chamber, a frequency conversion motor 4 connected to the driving rod through a transmission shaft 3, a frequency converter 5 connected to the frequency conversion motor through a cable, and a control The circuit board 6, a cooling water circulation device is provided outside the grinding chamber, and the grinding chamber cavity is communicated with the material circulation device. The cooling water circulation device includes a cooling water interlayer sleeve 7 placed outside the grinding chamber, a cooling water pool 9 and a cooling water circulation pump 10 connected to the cooling water interlayer sleeve through a cooling water pipeline 8; The mixing hopper 12 connected by the pipeline 11, the stirring device 13 located in the mixing hopper, and the material circulation pump 14 are arranged in the middle of the material circulation pipeline.
研磨腔1分别连接冷却水循环装置和物料循环装置，由控制线路板6控制变频电机4的开停和转速。冷却水夹层套7环绕在研磨腔1外，物料从研磨腔1中流入混料斗12，再从混料斗12流回研磨腔1完成物料循环，搅拌装置13对混料斗12中的物料进行搅拌。在此过程中，可从混料斗12处观察物料的研磨情况、取样和加物料；冷水经冷却水管路8从下部流入冷却水夹层套7，对研磨腔1进行冷却后从上部流出排入冷却水池9；冷却水的流量通过阀门控制；通过变频器5控制变频电机转速，可以使拨杆达到一个相对平衡的转速；在混料斗12中按顺序加入物料进行研磨，得到选矿用磁流体。The grinding chamber 1 is respectively connected to the cooling water circulation device and the material circulation device, and the control circuit board 6 controls the start, stop and rotation speed of the frequency conversion motor 4 . The cooling water jacket 7 surrounds the grinding chamber 1, the material flows into the mixing hopper 12 from the grinding chamber 1, and then flows back from the mixing hopper 12 to the grinding chamber 1 to complete the material circulation, and the stirring device 13 stirs the materials in the mixing hopper 12. During this process, the grinding condition, sampling and feeding of materials can be observed from the mixing hopper 12; the cold water flows into the cooling water interlayer sleeve 7 from the lower part through the cooling water pipeline 8, cools the grinding chamber 1, and then flows out from the upper part into the cooling The water pool 9; the flow of cooling water is controlled by a valve; the speed of the variable frequency motor is controlled by the frequency converter 5, so that the lever can reach a relatively balanced speed; materials are added in order in the mixing hopper 12 for grinding to obtain a magnetic fluid for mineral processing.
以上所述，仅是本发明的最佳实施例而已，并非对本发明作任何形式上的限制，任何熟悉本领域的技术人员，在不脱离本发明技术方案范围情况下，利用上述揭示的方法内容对本发明技术方案做出许多可能的变动和修饰，均属于权利要求书保护的范围。The above is only the best embodiment of the present invention, and does not limit the present invention in any form. Any person skilled in the art can use the method content disclosed above without departing from the scope of the technical solution of the present invention. Many possible changes and modifications to the technical solution of the present invention belong to the protection scope of the claims.
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