235 results about "High sodium" patented technology

The invention discloses a sodium-removing purification cyclic system of high-sodium coal. The system comprises a circulating water heater, a raw coal purification device, a mixing reaction device, a coal liquid separation device, a wastewater treatment device, a sodium-removing coal drying device and a steam heating source. The cyclic system heats water by utilizing a power plant heat source, andpurification and sodium removal are carried out on the raw coal through water circulation, thus good coal quality is reached, and the effects of saving water and the like are reached.

The invention relates to high-sodium low-fluorine covering slag, which is prepared from raw materials of wollastonite, limestone, quartz sand, fluorite, bauxite, manganese carbonate, magnesia, hydrous borax, industrial soda, lithium carbonate, and carbonaceous materials, and the chemical components of the covering slag meets the following weight percentage: more than 30 and less than 34 percent of CaO, more than 30 and less than 38 percent of SiO2, more than 12 and less than 25 percent of Na2O, less than 4 percent of MgO, less than 8 percent of MnO, less than 4 percent of B2O3, less than 1.5 percent of Li2O, less than 4 percent of Al2O3, less than 2 percent of F, more than 4 percent and less than 10 percent of C, and the balance being impurities. In the covering slag, the ratio of sigma CaO to the SiO2 is controlled to between 0.8 and 1.15 to ensure that the fused mass of the covering slag does not separate out crystals at high temperature and liquid slag in a slag film can lubricate a casting blank. Aiming at that the content of fluorine has adverse influence on environment and equipment, the invention adopts high-sodium low-fluorine continuous casting covering slag which not only can meet the requirement of coordinated control of heat transfer and lubrification of a continuous casting covering slag for crack sensitive steel to cast casting blank with good surface quality, but also can reduce the fluorine content in air and secondary cooling water, thus the air pollution is reduced and the corrosion of fluorine-contained water to equipment is reduced.

The invention relates to a health-care seasoning, particularly a prebiotic low-sodium salt and a prebiotic low-sodium salt composite seasoning, and a preparation method thereof. The prebiotic low-sodium salt comprises 50-70% of sodium chloride, 20-45% of potassium chloride, 0.5-15% of prebiotic and 1-5% of ultrafine food powder and other auxiliary materials. Unless otherwise specified, the percents in the invention are mass percents. The prebiotic low-sodium salt seasoning comprises 10-49% of sodium chloride, 10-37% of potassium chloride, 0.5-15% of prebiotic and 5-30% of ultrafine food powder and other auxiliary materials. The prebiotic low-sodium salt and prebiotic low-sodium salt seasoning overcome the defects of high sodium chloride content, unbalanced sodium and potassium ions and high tendency to causing hypertension and kidney diseases of the human body; the water-soluble dietary fiber-oligosaccharide prebiotic, which is beneficial to the human health, is added to well promote growth and reproduction of the probiotic in the intestinal tract, thereby preventing constipation and subhealth diseases caused by accumulation of toxins in the intestinal tract.

The invention provides a method for synthesizing a high-sodium iron-based Prussian blue electrode material. The high-sodium iron-based Prussian blue electrode material comprises the following raw materials in percentage by mole: 25-43 percent of iron ion-containing metal salt, 25-43 percent of ferricyanide ion-containing metal salt and 14-50 percent of a complexing agent. The method comprises the following steps: 1, adding the iron ion-containing metal salt and the complexing agent into a container according to the ratio of the raw materials, adding a solvent, mixing, thereby obtaining a solution A; 2, adding the ferricyanide ion-containing metal salt into the container according to the ratio of the raw materials, adding the solvent, mixing, thereby obtaining a solution B; 3, mixing the solution A and the solution B, and reacting for 2-24 hours; and 4, respectively washing the obtained materials for several times by using water and ethanol, removing the impurities, drying, thereby obtaining the high-sodium iron-based Prussian blue electrode material. The obtained material serves as a sodium ion battery cathode material and has excellent electrochemical performance. The method is low in cost, readily available in raw materials, simple in process and easy for industrial production.

The invention relates to a method for recovering the valuable metals in a waste nickel-cobalt-manganese-lithium ion battery by an ion exchange method, which comprises the following steps of disassembling, discharging and crushing the waste nickel-cobalt-manganese-lithium ion battery, leaching, replacing the leachate with nickel powder or cobalt powder to remove the copper, and hydrolyzing with a valuable metal alkali solution as a neutralizer to remove the iron and aluminum; regenerating the chelating resin with a lithium hydroxide solution, adsorbing the nickel, cobalt and manganese in the impurity-removed solution, and backwashing with sulfuric acid to obtain a nickel-cobalt-manganese mixed solution; and recovering the lithium in the liquid after resin adsorption in the form of lithium hydroxide. According to the method, the stripping and leaching of the waste nickel cobalt lithium manganate ion battery are completed in one step, the impurity elements are not introduced during the leachate impurity removal and valuable metal separation and extraction process, the lithium hydroxide used for ion exchange resin is regenerated via the lithium hydroxide, at the same time, the nickel-cobalt-manganese is absorbed, so that the lithium is prevented from being adsorbed and entering a nickel, cobalt and manganese solution to be lost, and the lithium recovery is prevented from being influenced due to the high sodium ion content in the solution with the sodium hydroxide. According to the present invention, the recovery rate of nickel, cobalt and manganese reaches 98% or above, the recovery rate of lithium reaches 90% or above, the technological process is short, the equipment is few, and the cost is low.

The invention discloses a novel decoking agent for fire coal. According to the invention, an aluminum-system compound is used as a main agent, and a silicon-system compound is used as an auxiliary agent; in terms of oxides, the decoking agent comprises, by weight, 35 to 70 parts of alumina and 15 to 50 parts of silicon oxide, the sum of the weight parts of alumina and silicon oxide is no less than 60, and a ratio of the weight parts of alumina and silicon oxide is no less than 0.40. The novel decoking agent provided by the invention can directly increase the melting point of high-sodium coal ash during boiler combustion, substantially lowers down the degree to which a hearth and a heating surface are contaminated by sticky fusion products and the degrees of slag-bonding and coking during high temperature combustion, and has a decoking rate of 50 to 80%.

The invention discloses a method for removing sodium in a preparation of high-purity alumina. The method comprises the steps of purifying, secondary purifying, washing, drying, secondary washing and drying again. The method specifically comprises the following steps of: grinding aluminium hydroxide with high sodium content to be less than or equal to 500mu m, stirring and washing for 2-3 times in thermostatic water bath with temperature being 50-55 DEG C by utilizing a sodium removing agent I to obtain pure aluminium hydroxide; washing the purified pure aluminium hydroxide with water till pH value is 7.0-7.5, drying and dehydrating; adding a sodium removing agent II to the washed and dried aluminium hydroxide, and stirring and washing for 2-3 times in the thermostatic water bath with temperature being 30-50 DEG C; and washing the aluminium hydroxide which is purified for the second time by utilizing pure water with temperature being 30-50 DEG C, drying, dehydrating and transforming the washed aluminium hydroxide to fluffy ultralow sodium aluminium hydroxide. The method has the advantages of convenience, conciseness, no pollution and good sodium-removing effect.

The invention relates to a process for treating unwanted moderately saline waters for producing waters acceptable for treating soil, such as for irrigation. The treated water is also suitable for human and livestock consumption. The process includes passing moderately saline waters having 0.05% or more by weight and less than 1.00% by weight of the salts of Na, K, Ca, Mg, Fe, Cl, SO₄, or CO₃ or combinations thereof through an ion exchange resin. The ion exchange resin is pre-treated to be saturated with multivalent cations. Preferred multivalent cations include calcium (Ca²+) or magnesium (Mg²+) ions, or combinations thereof. After passing through the ion exchange resin, the effluent has decreased sodium cations and increased calcium and/or magnesium cations compared to the pre-treated moderately saline water. As the moderately saline waters passes through the ion exchange resin, the sodium content of the resin rises as the multivalent cation content lowers until the resin is unacceptable for further water treatment in accordance with the present invention. To regenerate the ion exchange resin, the resin is flushed with a brine solution having more than 1.00% by weight of the salts of Na, K, Ca, Mg, Fe, Cl, SO4, or CO3. Preferably, the brine is particularly high in calcium and/or magnesium content and low in sodium. The brine solution is flushed through the ion exchange resin until the ion exchange resin is sufficiently saturated with multivalent cations to again process moderately saline water having high sodium content.

The invention provides a method for cultivating trees in heavy degree saline and alkaline land through dripping irrigation, which comprises ridging, planting and irrigation management. The method comprises: A, a step of manual ridging, in which the ridge height is 60 centimeters, the width of ridge top is 60 centimeters, and the ridge spacing is 300 centimeters, and the plant spacing is 200 centimeters; B, a step of planting, in which holes with a diameter of between 30 and 50 centimeters and a depth of between 30 and 50 centimeters are dug in the planting process, non-saline and alkaline soil dressing is filled in the holes after saplings are planted and fixed in the holes, and films are covered on the land; C, a step of drip irrigation zone setting, in which the center of each ridge is provided with a single-ridge single-strip drip irrigation zone and the drop spacing is 10 to 50 centimeters; and D, a step of drip irrigation, in which the land is irrigated initially on the same day of planting, the amount of water used for irrigation is four times of that of water used for daily irrigation, after that the land is irrigated one every other 1 to 2 days, with 4 to 5 millimeters of water each time. The method adopts ground irrigation and tree root soil replacement, and forms desalting areas at the root parts of the trees and ensures the normal growth of the trees. The method solves the problem that the soil structure of the saline and alkaline soil with a high sodium ion content is damaged after leaching, keeps the good soil structure of soil dressing during salt leaching and provides a good growing environment for the trees.

The invention belongs to the technical field of novel energy storage materials, and relates to a Prussian blue cathode material with a high sodium content, a preparation method and applications thereof, and a sodium ion battery. The molecular formula of the Prussian blue cathode material is Na<x>MNFe(CN)<6>; wherein M and N represent a same transition metal or different transition metals andcan be Fe, Co, Mn, Ni, Cu, Zn, Cr, V, Zr, or Ti; 1.8<x<2; 0<a<1; 0<b<1; and a+b=1. The cathode material has millimeter cubic morphology and excellent electrochemical properties. The preparation method has the advantages that the crystallization is slow, the sodium content of the cathode material is high, the preparation method is simple and easy to perform, the production efficiency and the yieldare high, the raw materials are cheap, and industrial production and enlarged production are easy to realize.