740 results about "Ferrous" patented technology

The invention supplies a new type adsorbent--mixed oxide of iron and manganese / diatomite preparation, use and regeneration method, belongs to the treatment of technology. The method used the soluble ferrous permanganate and salt as raw materials, respectively prepared the solutions, after adequate lye into permanganate solution, mixed two salt solutions, by adding diatomite particles, full oscillation, standing aging, neutralize, washing and drying to get the manganese oxide / silicon algae absorbent. The adsorbent is larger than the surface area and good adsorption properties can be used to remove arsenic in water pollutants (especially tervalence arsenic), and the adsorption surface activity of the saturated absorption of pollutants can be directly passed to load manganese oxide compound to regeneration.

Improved glass compositions for glass fibers typically useful for fire resistant blankets or containers to provide high burn-through resistance at temperatures of 2,300° F. and typically comprising 10.23% to 81.81% silica, 2.0% to 26.00% alumina, 3.0% to 15.0% calcium oxide, 0% to 10.50% magnesium oxide, 1.0% to 18.0% ferrous+ferric oxide, and 0% to 4.0% titanium dioxide; the improved glass compositions may include 0% to 9% lithium oxide, 0% to 9% boron oxide, 0% to 6.0% manganese oxide, and 0% to 4.0% phosphorous oxide.

The present invention belongs to the field of electrochemical power source material preparing technology, and is especially preparation process of oxygen place doped lithium ferric phosphate powder. The oxygen place doped lithium ferric phosphate as positive pole material in lithium ion cell has the molecular expression LiFeP(MxO4-x), and is prepared through mixing the dopant and the mother body material and sintering the mixture, or through solid phase reaction of the dopant and the mother body material. The preparation process has effective doping in the oxygen place of mother body material and the prepared material can raise the capacity and the circular discharge performance of the cell effectively and thus can find its wide application as positive pole material in secondary lithium ion cell and power cell.

Certain example embodiments of this invention relate to vacuum insulating glass (VIG) units including infrared meltable glass frits, and/or methods of making the same. More particularly, certain example embodiments relate to increasing the amount of ferrous oxide in glass frits (e.g., lead-free glass frits) used to form edge seals such that the glass frits absorb an increased amount of IR energy. The techniques of certain example embodiments make it possible to expose some or all of the VIG intermediate assembly to infrared source(s), since the glass frit will heat up faster than the substrates thereby reducing the likelihood of the first and/or second substrate melting and losing heat treatment strength. In certain example embodiments, the frit's glass redox (FeO/Fe₂O₃) preferably is at least about 0.02 higher than either (or the higher) of the substrates' glass redox (FeO/Fe₂O₃), more preferably at least about 0.04 higher, and most preferably at least about 0.06 higher.

Improved glass fibers compositions, typically useful for fire resistant blankets or containers to provide high burn-through resistance at high temperatures of 2,400° F. and higher, and typically comprising silica, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, ferrous+ferric oxide, and titanium oxide; the improved glass compositions may further include alumina, lithium oxide, and boron oxide.

A method and system for providing a magnetic element are disclosed. The method and system include providing a pinned layer, providing a spacer layer, and providing a free layer. The free layer is ferrimagnetic and includes at least one of a conductive ferrite, a garnet, a ferrimagnetic alloy excluding a rare earth, a heavy rare-earth-transition metal alloy, a half-metallic ferrimagnetic, and a bilayer. The bilayer includes a rare earth-transition metal alloy layer and a spin current enhancement layer. The magnetic element is configured to allow the free layer to be switched due to spin transfer when a write current is passed through the magnetic element.

The invention discloses a micron-grade magnetic core coated ferrocyanide adsorbent for removing Cs ions in radioactive wastewater and a preparation method thereof. The adsorbent takes magnetic Fe₃O₄ as a core, the surface is coated with a dense SiO₂ single layer serving as a protective layer, and an active component is metal ion stabilized potassium ferrocyanide coated on the outer layer, wherein stabilized metal ions comprise Ti, Zn, Cu, Ni, Co, and Zr. The particle size of the adsorbent is 0.2-5 μm, the adsorbent in the outermost layer is conductive to improving the adsorption efficiency for Cs⁺ ions, and an external magnetic field is adopted for realizing solid-liquid phase separation. The preparation method comprises the following steps: coating a hydrated metal oxide of Ti, Zr or Co, Ni, Cu or Zn on the surface of Fe₃O₄SiO₂ to form a composite magnetic material, wherein the hydrated oxide performs hydroxyl polymerization reaction with the surface of SiO₂ to produce M—O—Si bonds to improve the bonding strength between M and the surface of SiO₂; and finally reacting the composite magnetic material with a potassium ferrocyanide solution to form the required composite adsorbent, wherein the metal ions M achieve the effects of stabilizing the ferrocyanide and also achieve a bridge effect for bonding the ferrocyanide and the composite magnetic material together.

Ferrous phosphate (II) (Fe₃(PO₄)₂) powders, lithium iron phosphate (LiFePO₄) powders for a Li-ion battery and methods for manufacturing the same are provided. The ferrous phosphate (II) powders are represented by the following formula (I):

Fe_(3-x)M_x(PO₄)₂.yH₂O  (I)

wherein, M, x, and y are defined in the specification, the ferrous phosphate (II) powders are composed of plural flake powders, and the length of each of the flake powders is 0.5-10 μm.

A compound of ferrous L-threonate with structure (I), its compostions and methods useful for iron supplementation for mammals, particularly for human body to improve and treat nutritional iron-deficiency anemia, blood loss anemia and hemolytic anemia.

The invention relates to a high-purity iron oxide black pigment and a production method thereof. The production method comprises the following steps of: with a crystal seed as a carrier in a liquid phase method production process, carrying out reaction on ferrous sulphate and sodium hydroxide in an oxidation barrel, immediately generating ferrous hydroxide sol under the alkali condition, introducing steam and warming for reaction, introducing air for oxidation after a specified temperature is reached, and reacting for a period of time to obtain the high-purity iron oxide black pigment. The granules of the product obtained by the method are small and uniform compared with a synthetic method, and the yield is high and the coloured light is good; meanwhile, the purity of the product is controlled, thus the operating requirement in the industry is met. The invention also aims at providing the high-purity iron oxide black pigment prepared by adopting the method.

A green glass able to strongly absorb ultraviolet ray and infrared ray is characterized by that the colouring agent is used as part of raw materials for ordinary NaSiCa glass. Said colouring agent contains Fe2O3 (0.5-0.9 %), TiO2 (0.2-0.7%), and CeO2 (0.05-0.15%). Its advantages are low ultraviolet transmissivity (less than 17%), low infrared transmissivity (less than 28%) and high viual light transmissivity (more than 70%).

The invention discloses a leaching method for remediating hexavalent chromium contaminated soil. The method comprises the following steps: (1) slurrying the contaminated soil; (2) fully acidizing materials; (3) adding a reducing agent which is a mixture of calcium polysulfide and ferrite to reduce hexavalent chromium; (4) adding a neutralizing precipitant to precipitate trivalent chromium; and (5) separating solid and liquid, and preparing slurry through supernate. According to the method, a leaching agent and the leaching step are correspondingly simple and convenient to operate, high in safety, low in cost, high in hexavalent chromium recovering efficiency, and hard to cause secondary contamination; meanwhile, wastewater can be recycled, so that the requirement on water for leaching can be met, and as a result, the water resource can be greatly saved, and the secondary contamination caused by drained sewage can be avoided.

The invention discloses a process for preparing battery-grade high-purity nano iron phosphate. The process comprises the steps that the pH is improved by using a titanium dioxide by-product, impurities are removed and a solution is purified by adding iron powder, then ferrous oxidization is performed to obtain ferric iron, the pH of iron sulfate is regulated, ferric ions in the iron sulfate are extracted by adopting di(2-ethylhexyl) phosphoric acid, a washed organic phase is obtained through 5-6 level counter-current extraction, 5-6 level counter-current acid solution washing and 2-3 level counter-current pure water washing, sulfonated kerosene is distilled out, the organic phase obtained after distillation is mixed with a catalyst, reaction is performed at the temperature of 300-320 DEG C for 3-4 hours, and the material obtained after reaction is washed by adding ethyl alcohol and is dried to obtain the high-purity nano iron phosphate. According to the process for preparing the high-purity nano iron phosphate, the high-purity nano iron phosphate can be prepared through the titanium dioxide by-product, the obtained iron phosphate is high in purity, small in particle size and large in specific surface area, the ferro-phosphorus ratio is 0.995-1.01, and the wastewater production amount is small.

The invention discloses a nutrient solution for grafting of red kiwi and a use method of the nutrient solution. The nutrient solution comprises an I type nutrient solution and an II type nutrient solution, wherein the I type nutrient solution contains the following constituents: 1,320mg ammonium nitrate, 1,150mg nitrate, 350mg calcium chloride, 240mg magnesium sulfate, 125mg potassium dihydrogen phosphate, 32.5mg sodium ethylene diamine tetracetate, 20.3mg ferrous sulfate, 4.3mg boric acid, 0.35mg potassium iodide, 15.7mg manganese sulfate, 0.02mg copper sulfate, and 7,200mg saccharum or agar that are dissolved in every 1L water, and the II type nutrient solution contains the following constituents: 0.35mg naphthylacetic acid and 0.35mg indolebutyric acid that are dissolved in every 1L water. The nutrient solution for the grafting of the red kiwi can prolong the effective to-be-grafted time of sprouting to be grafted, increase the survival ratio and utilization ratio of the grafting and facilitate the production and popularization of kiwi planting.

The invention belongs to the technical field of battery material preparation, and particularly discloses a preparation method of battery-grade anhydrous iron phosphate. The method includes preparing aferrous solution by adopting cold-rolled iron plate leftover materials and/or beneficiation reduced iron powder as an iron source, or preparing a ferrous solution by adopting by-product ferrous sulfate of sulfuric acid method titanium dioxide production; then removing impurities by using a flocculating agent; then oxidizing ferrous ions into ferric ions; mixing the ferric ions with a solution containing phosphate ions; adding a dispersing agent; carrying out crystallization reaction to obtain iron phosphate crystals; subjecting the iron phosphate crystals to drying and roasting to obtain thebattery-grade anhydrous iron phosphate. According to the preparation method, low-cost cold-rolled iron plate leftover materials, beneficiation reduced iron powder or byproduct ferrous sulfate in a sulfuric acid method titanium dioxide production process is used as an iron source for preparation; the flocculating agent is adopted for impurity removal, and then crystallization is performed to prepare the battery-grade anhydrous iron phosphate. The method has the advantages of low raw material cost, high product purity and high tap density, is of a spherical structure, and can be used as a precursor of lithium iron phosphate with high tap density.

The invention relates to the field of metal smelting, particularly to a method for recovering zinc, indium, iron, and lead from a high-iron zinc oxide mixture smelted with zinc. The method comprises the following processes: a high-iron zinc oxide mixture neutral leaching process, a neutral leaching residue low acid leaching process, a low acid pressure filter residue peracid leaching process, a low acid leaching liquid prereduction process, and a indium enrichment recycling process; valuable metals are comprehensively recovered from the high-iron zinc oxide mixture; a generated neutral leaching liquid is adopted by a main zinc smelting system to generate electrolytic zinc; a hydrolyzing filter liquor generated from the indium enrichment recycling process contains relatively rich ferrous ions; the hydrolyzing filter liquor is adopted by the main system for removing impurities and generating high-grade indium enrichment residues; therefore, the high-iron zinc oxide mixture is effectively recycled, the problem of high-iron zinc oxide mixture treatment is solved, capability of comprehensive utilization of metal resources is increased, so that resources are comprehensively recycled, and environment protection is facilitated; the method has relatively good economic benefits and social benefits.