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Arthur MANELAS, et al.

NanoMagnetic Power




https://www.lenr-forum.com/forum/thread/2448-nanomagnetism-and-lenr/

Nanomagnetism and LENR
Brian Ahern

I began a replication of Arata in early 2009 under sponsorship of EPRI. I completed that work with a report dated August 2012. It was a collaborative effort among 6-8 LENR experts.

We found excess energy in 14 consecutive experiments, but the power output was only on the order of 100-200 milliwatts. This result was real, but it was dwarfed by Rossi's claims. At that time Rossi had failed in over ten consecutive experiments to demonstrate his claims.

The Lugano effort was the Mount Everest of bad Science. I and others demanded that the Lugano test not use optical pyrometry. Levi and his noble band did us one better by refusing to use thermocouples to corroborate their own data.

I had abandoned all hope of the Rossi claims when Parkhomov announced his replication of Lugano. I dropped everything and began my own replication since I had all the equipment set up from the EPRI experience.

I found no excess energy in 7 consecutive experiments. Then I learned that Parkhomov had trouble replicating his own claims. This followed with a Chinese claim, but that too was withdrawn.

At the end of my EPRI study I discussed adding high voltage pulses through the nanopowders to enhance energy output. I burned out the power supply and I was introduced to Arthur Manelas (Pelham NH) to fix the supply as he was an expert on high voltage pulsed power. He showed me a device that seemingly violated the First Law of Thermodynamics. He had an electric car powering itself with a supply based on Tesla and Floyd Sweet.

I and two other talented engineers set out to make independent measurements of the performance. We found a large ferrite billet (1" x 4" x 6") weighing one kilogram. The billet was highly insulating. It was also ferromagnetic with unusual field characteristics.

The billet was wound around each of its 3 axises with about 150 feet of magnet wire. High voltage pulses were sent in through two windings and power was extracted from the third winding to charge the battery pack of the car. We found an excess electrical power out put of 60 watts for the 6 days of the test. During this period the billet ran 5 degrees C below ambient.

This is the first report of any transformer showing a Negative Hysterisis. This has caused us to believe that LENR has magnetism at it core.

Arthur Manelas took the device apart to rebuild two new ones.In the interim he suffered a stroke and died without leaving a circuit diagram or notes on the operation. I remain baffled by the operation in 2011-2012 period and believe that the excess comes from a new magnetic interaction.



https://www.youtube.com/watch?time_continue=641&v=0PS2v1kN1U8

Brian Ahern -- Nanomagnetism for Energy Production

Brian Ahern, Vibronic Energy Technologies Corp "Nanomagnetism for Energy Production" March 22, 2014 CF/LANR Colloquium at MIT

Comment -- ROGER JOHNSON -- During the 2014 CF/LANR colloquium at MIT Dr. Ahern mentioned that there seemed to be a correlation between northern lights and the voltage fluctuations in the Manelas circuit.  I compared the Manelas data with the fluctuations in earth's magnetic field at Fredericksburg, VA and Saint John's NFLD (intermagnet.org).  While the field was active during the first test as expected when northern lights are visible this far south  I can not see anything that suggests a connection between the field and the voltage drops.  I also do not see any connection between the two phenomena in the second set of data.  I suspect that the ACE and GOES satellite data  also will show no correlation with the voltage fluctuations, but I have not checked them.

Dr. Ahern also mentioned that the ferrite was cooler than the ambient temperature, and also exhibited negative hysteresis.  Although the photo does not appear to have been taken in Pelham, NH I compared the Manelas data with weather data from Pelham, NH, where I think Mr. Manelas used to live.  (weatherunderground.com).  The voltage dips occurred during periods of low temperature and high humidity in the first test.  There seems to be no connection between temperature and the voltage anomalies in the second test, however the initial positive voltage anomaly may have occurred because the ferrite was warmer when the system was started.

 I believe that the device Mr. Manelas has developed is in fact a magnetic refrigeration unit that extracts  heat in the form of electrical energy.  It behaves differently when cold/humid.  I would like to record the temperature of the ferrite with a thermal imaging camera while monitoring the output to see if the voltage anomalies are connected to the ferrite temperature, and to see if the ferrite temperature is uniform.  If there is a connection between temperature and output then adding a fan to warm the ferrite, and/or adding holes to the ferrite to improve heat transfer should increase output.

See also:

http://www.physics.fudan.edu.cn/tps/people/xfjin/pdf/wuyizheng_2001.pdf

for information on negative hysteresis and

https://en.wikipedia.org/wiki/Magnetic_refrigeration


 
Nano Strontium Ferrite Patents

Preparation method of strontium ferrite nano magnetic material
CN107540364
The invention discloses a preparation method of a strontium ferrite nano magnetic material. The preparation method comprises the following steps: firstly, preparing egg white water liquid, a SrCL2 solution and a FeCl3 solution respectively, slowly dropping a mixed metal salt solution into the stirred egg white water liquid, and continuously stirring until microemulsion is formed; putting wet sol obtained by stirring into a constant-temperature bath for drying to obtain solid dry gel; putting the dry gel into agate mortar, and grinding at the uniform speed in the same direction, and enabling asample to be sufficiently ground into powder; putting the ground powder into an alumina crucible, and then putting the crucible into a muffle furnace for sintering; after sintering is finished, naturally cooling to room temperature and taking out the strontium ferrite nano magnetic material. According to the preparation method disclosed by the invention, single-phase SrM ferrite powder is preparedby adopting a sol-gel method of taking egg white protein as a metal ion complex; a preparation process is simple and feasible; the SrM ferrite powder magnetic material prepared with the preparation method has the advantages of small and uniform particle size, good dispersity and excellent magnetic property.

Monodisperse ferrite micro-nano sheet and preparation method thereof
CN107381650
The invention relates to a monodisperse ferrite micro-nano sheet and a preparation method thereof. The transition metal element doped ferrite or ferric oxide is used as the component of the micro-nano sheet; a bismuth doped ferrite micro-nano sheet is of normal square shape, the side length thereof is 0.26-1.85mu m, the thickness is 20-240nm and the percent of the bismuth doped atoms is 0-14.2%; and a barium or strontium doped ferric oxide micro-nano sheet is of circular shape, the diameter is 1.48mu m-18.32mu m, the thickness is 0.16-3.54mu m and the percent of barium or strontium doped atoms is 0.3.3%. A coprecipitation-hydrothermal method is adopted for preparing the micro-nano sheet; the composition, shape and size of the particles can be regulated and controlled in the manner of adjusting the proportion of the transition metal salt; the method has the characteristics of low-cost easily acquired raw materials, low cost, simple process, low requirement for equipment, high efficiency and easiness in popularization; and the magnetic microchip has the characteristics of high monodispersity and uniformity, adjustable morphology and composition, and the like, and has wide application prospect in catalyst, electrode materials, pigments, microwave absorption or high-density magnetic recording materials.

Preparation method of strontium ferrite powder having good magnetic performances
CN107364896
The invention discloses a preparation method of strontium ferrite powder having good magnetic performances and low cost, and belongs to the field of magnetic nano-materials. The preparation method comprises the following steps: respectively dissolving a certain amount of a strontium salt and a certain amount of a surfactant, mixing the above obtained two solutions, dropwise adding the obtained mixed solution into a certain amount of an iron salt solution, controlling the pH value of a reaction by sodium hydroxide, carrying out the reaction in 80 DEG C water bath for 4 h, drying the obtained reaction product in an oven to obtain a precursor, combusting the precursor in a muffle place, and grinding the combusted precursor to obtain the strontium ferrite powder. The above magnetic material has a very good coercive force and an appropriate saturation magnetization intensity, has nanometer and uniform particle sizes, and is suitable for being used in magnetic recording materials. The preparation method of the magnetic nano-powder strontium ferrite powder, adopting simple chemical coprecipitation, has the advantages of simplicity and safety in operation, easily available raw materials, low cost, and low device requirements.

Preparation method of nano strontium ferrite
CN107043131
The invention discloses a preparation method of a nano strontium ferrite. The preparation method comprises the following steps of: (1) spraying and drying a mixed aqueous solution of nitrate, sulfate or chlorate containing an iron source, nitrate or chlorate containing a strontium source, a complexing agent and sodium chloride to form precursor powder; and (2) performing thermal decomposition on the precursor powder at 700-800 DEG C, and then dissolving and filtering the mixture to obtain nano strontium ferrite magnetic powder. By quickly spraying and drying the mixture to form eutectoid superfine precursor mixed powder in one step, the nano strontium ferrite magnetic powder is obtained by direct low-temperature thermal decomposition, dissolving and filtration by combining a fused salt assisted sintering technology. By taking sodium chloride as a fused salt dispersant, nanocrystals grow directionally, the anisotropy is increased, and the grain size is controlled. The salt playing a role of dispersing a medium in the preparation method can be recycled and repeatedly used, so that the environment is not polluted.

Strontium ferrite injection molding granular material and preparation method thereof
CN106448997
The invention discloses a strontium ferrite injection molding granular material. The strontium ferrite injection molding granular material includes 80-92 wt% of strontium ferrite magnetic powder, 7-19 wt% of a binder, and 1-2 wt% of an additive; surface modification is performed on the strontium ferrite magnetic powder through a silane coupling agent; and modification is performed on the binder through polyphenylene sulfide PPS and one of a glass fiber, a carbon nano tube, and a carbon fiber. According to the test, the magnetic energy product (BH) of the strontium ferrite injection molding granular material is not less than 15 kJ/m<3>, the bending strength of the strontium ferrite injection molding granular material is not less than 150 MPa, and the thermal deformation temperature of the strontium ferrite injection molding granular material can reach 195 DEG C.

High magnetic-energy-product sintered neodymium-iron-boron permanent magnet material and preparation method thereof
CN106205921
The invention provides a high magnetic-energy-product sintered neodymium-iron-boron permanent magnet material, which is formed by sintering neodymium-iron-boron powder, nano bismuth powder, nano strontium ferrite and nano molybdenum disulfide, wherein the neodymium-iron-boron powder comprises the following components in percentage by mass: 25.6%-27.1% of Nd, 0.76%-0.89% of B, 0.45%-0.53% of Ni, 0.25%-0.32% of Y, 0.35%-0.43% of Ga, 1.04%-1.16% of Nb, 3.9%-4.6% of Pr, 0.34%-0.41% of Al and the balance of Fe. The high magnetic-energy-product sintered neodymium-iron-boron permanent magnet material is prepared by uniformly dispersing nano mixed powder to wrap a main phase grain surface layer and then carrying out twice sintering and twice tempering. The high magnetic-energy-product sintered neodymium-iron-boron permanent magnet material has high residual magnetism and maximum magnetic energy product, the residual magnetism reaches 1.46T and the maximum magnetic energy product reaches 438kJ/m<3>; and meanwhile, the coercivity is also improved.

Ferrite magnetic core material for vehicle
CN105761867
The invention discloses a ferrite magnetic core material for a vehicle. The ferrite magnetic core material for the vehicle is prepared from the following raw materials in parts by weight: 52 to 56 parts of ferric oxide, 2.8 to 3.6 parts of silicon oxide, 25 to 28 parts of zinc oxide, 18 to 22 parts of manganese oxide, 2.2 to 3 parts of bismuth oxide, 1.5 to 2 parts of strontium carbonate, 0.3 to 0.4 part of Tween 80, 0.3 to 0.4 part of polydimethylsiloxane, 0.4 to 0.5 part of propylene glycol alginate, 0.3 to 0.4 part of polyoxypropylene glycerol ether, 2 to 3 parts of attapulgite, 2.5 to 3 parts of silane coupling agent kh550, 3 to 3.5 parts of polyamide resin, 2 to 2.5 parts of sodium silicate, 1.6 to 2 parts of methylsilicone oil, 1 to 1.5 parts of silica sol, 2 to 3 parts of polyvinyl alcohol, 0.5 to 0.7 part of polyurea, 1.4 to 2 parts of magnetic carbon powder, 1.5 to 2 parts of nano-sized lanthanum oxide, and a suitable amount of deionized water. The prepared ferrite magnetic core material has the advantages of high density, low medium-high frequency loss and low cost; moreover, the process is simple and easy to operate.

Strontium ferrite-loaded nano silver composite material and preparing method thereof
CN105597778
The invention discloses a strontium ferrite-loaded nano silver composite material and a preparing method thereof. The composite material is formed by compounding a strontium ferrite carrier and nano silver particles, and the surface of strontium ferrite is coated with the nano silver particles by a catalytic reduction technology. The prepared composite material has the diameter of 0.5-3 [mu]m, the diameter of the coated silver particles is 5-30 nm, and the diameter and the coating quantity of the silver nanoparticles can be controlled. Because the strontium ferrite carrier in the composite material belongs to a permanent magnet, the composite material has the advantages of high coercivity, large saturation magnetization intensity, good stability and the like, and is conducive to recovery and recycling of a strontium ferrite-loaded nano silver composite catalyst. The prepared composite catalyst has excellent catalytic performance, is easy to recover and reuse, has the advantage of environmental protection, and can be applied to degradation of organic pollutants of industrial and domestic sewage.

High-performance magnetic rubber material
CN105017576
The invention discloses a high-performance magnetic rubber material. The high-performance magnetic rubber material is prepared from following raw materials, by weight, 45 to 55 parts of rubber, 12 to 20 parts of dibutyl phthalate, 1 to 2 parts of stearic acid, 0.5 to 1.2 parts of promoter NA-22, 7 to 13 parts of a far-infrared material, 2 to 4 parts of epoxy resin, 12 to 17 parts of a thermoplastic resin, 2 to 4 parts of maleic anhydride, 5 to 7 parts of nano-grade silicon dioxide, 4 to 9 parts of a composite substrate material, 2 to 4 parts of N-aryl-alkyl p-phenylenediamine, 2 to 5 parts of a homogenizing agent, 20 to 35 parts of strontium ferrite magnetic nanoparticle, 10 to 15 parts of raw material iron powder, 1 to 2 parts of sodium chlorate, and 1 to 3 parts of an auxiliary element. Beneficial effects are that: the high-performance magnetic rubber material is capable of maintaining stable magnetic performance for a long term, is high in elongation at break, is not easily damaged, and is capable of improving material strength.

Wear-resistant magnetic rubber composite material
CN104927116
Disclosed is a wear-resistant magnetic rubber composite material. The raw materials include, by weights: 35 to 42 parts of natural rubber, 4 to 7 parts of polyvinyl ether, 2 to 4 parts of talcum powder, 5 to 7 parts of dioctyl sebacate, 12 to 25 parts of nano magnetic iron oxide particles, 2 to 5 parts of reinforcing agent, 2 to 6 parts of plasticizer, 3 to 7 parts of polypropylene, 4 to 6 parts of iron-boron magnetic powder, 2 to 5 parts of HDPE (high density polyethylene), 12 to 17 parts of nizn ferrite, 0.1 to 0.2 part of acceleratorTT, 2 to 6 parts of strontium carbonate, 1 to 2 parts of lanthanum oxide and 1.5 to 3 parts of N-ethyl-2-benzothiazole sulfenamide. The composite material has the advantages of fine wear resistance and oil resistance and high elasticity, the mechanical properties are improved, and pollution is avoided.

Permanent magnetic ferrite composite material
CN104891983
The invention discloses a permanent magnetic ferrite composite material. The permanent magnetic ferrite composite material comprises, by weight, 150 to 160 parts of iron trioxide, 10 to 15 parts of nano ceramic, 1 to 4 parts of lanthanum oxide, 0.2 to 0.5 part of silicon dioxide, 3 to 6 parts of barium oxide, 0.02 to 0.08 part of aluminum oxide, 2 to 4 parts of zinc oxide, 1 to 4 parts of strontium carbonate, and 0.5 to 1.5 parts of calcium stearate. According to a preparation method, iron trioxide is taken as the main raw material of the permanent magnetic ferrite composite material; nano ceramic is added; the permanent magnetic ferrite composite material is obtained via presintering, fine grinding, moulding, and sintering; parameter indexes, such as residual magnetism, coercivity, intrinsic coercive force, and maximum magnetic energy product, are obviously better than that of ordinary ferrite material; overall magnetic performance is improved; relatively high using requirements can be satisfied; and after acid treatment, ceramic is excellent in compactness, and is capable of reducing porosity and assisting crystal forming in sintering processes.
 
Preparation method of samarium-lanthanum-doped strontium ferrite-poly m-toluidine composite microwave absorbent
CN102634013
The invention provides a preparation method of a samarium-lanthanum-doped strontium ferrite-poly m-toluidine composite microwave absorbent. According to the invention, nitrate and ethylene glycol serve as raw materials, nano particles of samarium-lanthanum-doped strontium ferrite, Sr(LaSm)xFe12-2xO19, are prepared by virtue of a combustion method with a salt assisting solution in combustion, and the samarium-lanthanum-doped strontium ferrite-poly m-toluidine composite microwave absorbent is prepared in virtue of an in-situ composite technology. The absorbent is good in microwave absorbing property and has a wide application prospect in the fields of microwave devices, electromagnetic shielding, microwave absorption and the like.

Intermediate-temperature solid oxide fuel cell one-dimensional nano composite cathode and preparation method thereof
CN102623716
Disclosed is a preparation method of an intermediate-temperature solid oxide fuel cell one-dimensional nano composite cathode, which relate to an intermediate-temperature solid oxide fuel cell cathode and a preparation thereof and resolve the technical problem of high resistance of exiting lanthanum strontium cobalt ferrite (LSCF)/gadolinia doped ceria (GDC) composite powder cathode polarization. The preparation method includes the steps of preparing nitrate to be a precursor solution, sintering after electrostatic spinning, obtaining nano rod shaped powder, coating the powder on electrolyte sheets for sintering, permeating a mixture liquid of gadolinium nitrate and cerium nitrate, and obtaining products after sintering; or mixing LSCF nano rod shaped powder and Ce0.8Gd0.2O1.9 nano powder to coat on electrolyte sheets for sintering, and obtaining products. The cathode and the preparation method thereof are used for intermediate-temperature solid oxide fuel cells.

Method for preparing nano strontium ferrite
CN101920999
The invention discloses a method for preparing nano strontium ferrite, which comprises the following steps of: mixing strontium nitrate, ferric nitrate, sodium nitrate, potassium nitrate and sodium peroxide; melting the mixture at the temperature of between 400 and 800 DEG C, preserving the heat, and then cooling the mixture to room temperature; and then washing and drying the mixture to obtain a solid product, namely the nano strontium ferrite with distribution size of between 26 to 43nm. The method has the advantages of simple used equipment and process, low reaction temperature, low cost, low energy consumption, small grain of the product, uniform distribution of the particle size, and suitability for industrial production.

Lanthanum-doped strontium ferrite nano film and preparation method thereof
CN101565327
The invention discloses a method for preparing a nano-crystalline barium-strontium titanate film, belongs to the technical field of functional materials, and relates to a method for preparing a nano-crystalline BST film. A pre-crystallization treatment step is added between cooling step and crystallization step of the conventional sol-gel method for preparing the BST film. The nano-crystalline BST film can be grown internally and externally under atmospheric environment, and the obtained film is smooth and compact, and has no crack or shrinkage hole. The method can greatly improve the comprehensive dielectric tuning performance of the nano-crystalline BST film, the capacitance of the obtained nano-crystalline BST film is 58 to 1,840pF, the dielectric tuning rate is over 20.0 percent, the dielectric loss is less than 3.0 percent, the K factor is more than 15.0, and the nano-crystalline BST film has the advantages of high dielectric strength and stable frequency characteristic and temperature characteristic. The nano-crystalline BST film prepared by the method can replace ferrite and semiconductors for preparing a microwave tuning device (such as a phase shifter) so as to remarkably reduce the manufacturing cost of the microwave tuning device; in addition, the nano-crystalline BST film prepared by the method can also be used for magnetic recording, pyroelectric focal plane array and the like.

Cerium-doped strontium ferrite nano film and preparation method thereof
CN101565326
The invention relates to a cerium-doped strontium ferrite nano film and a preparation method thereof. The film is characterized in that a formulation comprises the following components in per 100 milliliters: 2.15 grams of ferric nitrate, 0.125 gram of strontium nitrate, 0.05 to 0.21 gram of cerium nitrate, 1.87 to 1.98 grams of glycol, and 3.17 to 3.35 grams of citric acid. The preparation method prepares the crystalline strontium ferrite nano film on a quartz substrate, the cerium-doped strontium ferrite nano film with high purity is obtained through the optimization of the preparation process, and the film can be used for preparing a magnetic recording material and a wave absorbing material.; The method has the advantages that the method has simple process flow and low cost, is convenient to prepare the film on various substrates with different shapes, is easy to prepare even multi-component oxide films, is easy to dope quantitatively, and can effectively control film components and microstructures.

High specific saturation magnetization and high coercitive force strontium ferrite magnetic powder and preparation thereof
CN101372417
The invention provides a method for preparing a strontium ferrite magnetic powder with high specific saturation magnetization and high coercive force. Nitrates and chlorides of Sr, R Fe and M with limited amounts are dissolved, added with citric acid and ammonia gas to adjust the solution obtained to neutral or slightly alkaline so as to prepare sol; the sol is heated and evaporated to prepare gel, a precursor is prepared by self-propagating combustion, and the magnetic powder is obtained by calcining the precursor at a low temperature. In the composition, R is at least one of Y, La, Pr, Nd and Ce, and M is at least one of Co, Ni, Zn, Cu and Mn.; In the method, the magnetic powder can be obtained by mixing, ball milling, calcining, fine grinding and annealing the precursor obtained by self-propagating combustion and at least one of the nano-grade SiO2, CaCO3, B2O3, SrSO4, Al2O3 and Cr2O3. The magnetic powder prepared by the technology has the specific saturation magnetization of 71-75emu/g and the coercive force of 5.5-6.5kOe. The magnetic powder is suitable for preparing bonded permanent magnets and automobile motor magnets requiring high magnetic property.

Method of manufacturing nano-strontium ferrite film
CN101367646
The invention relates to a preparation method of a nanometer strontium ferrite thin film, which is characterized in that the invention is made through the following steps: iron nitrate, strontium nitrate, and the like, mainly serve as raw materials to prepare a forerunner body of the nanometer strontium ferrite in a sol-gel method; clean silicon dioxide serves as a support base, the iron nitrate and the strontium nitrate salt, citric acid serves as complexing agent, glycol serves as complexing agent assist, the silicon dioxide support base is arranged in the forerunner body, namely is soaked in the sol, and a soakage-drawing method is adopted to make the film. The preparation method of a nanometer strontium ferrite thin film has the characteristics that firstly, the sol-gel method is adopted to prepare, and the nanometer thin film with high purity is obtained through optimizing preparation technology, and basic components of the nanometer strontium ferrite thin film can be seen in a table 2; secondly, the grain size of the nanometer strontium ferrite thin film is 40mm to 60mm, the grain size is evenly distributed, and the thin film surface is compact and is composed of bar-shaped crystal particles which are stacked; thirdly, the electromagnetic performance of the nanometer strontium ferrite thin film is good.
 


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"NanoMagnetite" Patents

Method for Producing High-Purity Hydrogen Gas and/or Nanomagnetite
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The disclosure relates to a method for producing hydrogen gas and/or magnetite comprising the steps of reacting a wüstite-containing material, such as steel slags, with H2O at a temperature ranging from 150° C. to 500° C., cooling down the gaseous reaction product to separate hydrogen gas from water steam and collecting hydrogen gas, and recovering magnetite from the solid reaction product.

METHOD FOR PRODUCING NANOMAGNETITE
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The invention relates to a method for producing magnetite, comprising the following steps: a) reacting, at a temperature of 100 to 500°C, a material containing wüstite with water so as to obtain a solid comprising magnetite, and b) recovering the magnetite in the form of particles of which more than 25% by weight are nanoscale.

MAGNETITE-SILICA CLUSTER, THE METHOD FOR PREPARING THEREOF AND THE METHOD FOR DESULFURIZATION USING THE SAME
KR100928910
Provided are an adsorbent which is excellent in reactivity as a catalyst that is capable of forming disulfide, a preparation method thereof, and a method of removing sulfur compounds presenting in the natural gas using the same. A preparation method of a magnetite-silica cluster comprises a first step of preparing a nanomagnetite of which the surface is substituted with a hydrophilic group in an aqueous solution containing a ferrous ion(Fe^2+) and a ferric ion(Fe^3+), a second step of adding the nanomagnetite in an aqueous solution comprising a catalyst and a surfactant, a third step of mixing a silicon precursor with the aqueous solution of the second step to prepare a nanomagnetite-silica cluster, and a fourth step of calcining the nanomagnetite-silica cluster. The first step includes a step(a) of mixing FeSO4.H2O, Fe2(SO4)3.H20 and (NH4)2C2O4 in the aqueous solution and a step(b) of adding sodium hydroxide in the aqueous solution. The preparation method further comprises a step of recovering the magnetite-silica cluster prepared in the third step from the aqueous solution and a step of filtering and drying the recovered magnetite-silica cluster.

Method for treating Cr6+ in waste water and method for preparing montmorillonite-base nano magnetite used thereof
CN101215041
Provided is a process for treating Cr6+ in waste water, which comprises: adding nano magnetite of montmorillonite substrate in waste water containing hexavalent chromium, stirring for 5 minutes to 2 hours at normal temperature and then placing for 15 minutes to 2 hours, employing magnet or additional magnetic field to recycle adsorption materials. The process for preparation by employing the nano magnetite of montmorillonite substrate comprises that mixing ferric salt and ferrous iron salt solution, adding by ammonia spirit, adding by hydrochloric acid after filtering, rinsing and solid-liquid separation treatment, adding by montmorillonite then solid-liquid separating, drying and dewatering and the like.; The invention of treating waste water containing Cr6+ has the advantages of high efficiency, low cost, simple operation and the like, and can be widely used for waste water treatment in a plurality of fields, such as tanning, plating, metallurgy, pharmacy, ferrochrome smelting, pigment, chromic salt chemical industry and the like.