9results about How to "Not easy to dissolve" patented technology

The invention belongs to the field of medical radioactive isotope preparation, and particularly relates to a method for extracting lead-212 and bismuth-212 from a thorium-232 decay chain, a solution containing a thorium-232 decay chain substance passes through an anion exchange resin column, the solution containing the thorium-232 decay chain substance contains halide ions, and the anion exchange resin column is used for extracting the lead-212 and the bismuth-212 from the thorium-232 decay chain substance. The concentration of hydrogen ions in the solution containing the thorium-232 decay chain substance is greater than 0.01 mol / L, the lead-212 and the bismuth-212 are adsorbed by the anion exchange resin column, other nuclides directly penetrate through the anion exchange resin column and are not adsorbed, a leaching reagent is introduced to desorb the lead-212 and the bismuth-212 from the anion exchange resin column, and the lead-212 and the bismuth-212 are separated and extracted; the method can be used for simultaneously extracting lead-212 and bismuth-212, has the advantages of high extraction speed and high purity, and is not easy to cause organic pollution to products.

The invention discloses a method for inhibiting argillization in a coal washing process, and relates to the technical field of coal processing.The argillization inhibitor comprises filler and auxiliaries, the filler comprises sodium oleate and sodium hexametaphosphate, and the auxiliaries comprise a stabilizer, an antioxidant, a surfactant and an emulsifier; a layer of argillization inhibitor is sprayed on the surface of the coal in advance, so that the surface of the coal is covered with the argillization inhibitor, oil acid radical ions in the argillization inhibitor are adsorbed on the surface of the coal, the content of hydroxyl and hydrocarbon groups on the surface of the coal is increased, the hydrophobicity of the coal particles is improved, and therefore the coal particles are not prone to being dissolved; sodium hexametaphosphate in the argillization inhibitor can enhance the barrier effect among coal particles, so that the coal particles are in a dispersed state, the hydrophilicity of high-ash components in the coal is improved, the high-ash substances in the coal are inhibited from floating out along with clean coal, and the coal slime water treatment is facilitated. The purpose of reducing the ash content of the flotation clean coal is achieved.

The invention discloses a method for modifying fibroin of synthetic fibers, which comprises pretreatment and silk making, silk protein peptide powder is directly melted and blended into polymer master batch and an auxiliary functional aid, and silk making is performed by sequentially utilizing spinning, cooling and drafting, so that the synthetic fibers (such as polyester or chinlon) are provided with silk protein peptide, and the silk protein peptide powder is added into the polymer master batch and the auxiliary functional aid. The silk protein peptide has the advantages of the silk protein peptide, and the silk protein peptide is not easy to dissolve and lose.

Provide are a cell culture method which includes using a culture vessel which contains a cell suspension containing cells and discharging a gas including 30% by volume or more of oxygen into the cell suspension from a sparger disposed in the culture vessel to culture the cells, in which an average hole diameter in a gas discharge portion in the sparger is 1 µm or more and 300 µm or less, and a surface area A (m2) in the gas discharge portion in the sparger, a volume X (m3) of the cell suspension in the culture vessel, and a flow rate Q (m3 / min) of the gas that is discharged from the sparger satisfy a specific relationship, a product producing method including the cell culture method, and a cell culture device that enables the cell culture method.

The utility model provides a spraying type ice making assembly and a water purifying and drinking machine. The spraying type ice making assembly comprises a shell with an upper opening, a cover plate covering the upper opening, an evaporator body, a plurality of spraying pieces and a plug. By means of a spraying mode, water is sprayed while ice is formed through condensation, air in the ice blocks can be avoided through the ice blocks formed through condensation, the transparency and hardness of the ice blocks are improved, and the ice blocks are not prone to melting; the number of ice making can be controlled through the detachable mounting arrangement of the spraying piece and the plug; ice blocks of different shapes can be formed through spraying by means of different spraying openings.

The invention relates to the technical field of metal corrosion prevention, in particular to a wear-resistant and corrosion-resistant aluminum alloy and a surface treatment process thereof. The aluminum alloy plate is sequentially subjected to polishing, hanging, oil removal, water washing, alkali corrosion, water washing, pure water washing, bright dipping, water washing, pure water washing, hard anodic oxidation, hanging, water washing, pure water washing and blow-drying, and the surface-treated aluminum alloy plate is obtained. The polyurethane coating is obtained by adding raw materials such as hydroxyl-terminated fluorosiloxane, fluorine-containing polyol, quaternary ammonium salt polyol, polypropylene glycol, isophorone diisocyanate, a composite graphene material and the like. And the polyurethane coating is brushed to the surface of the surface-treated aluminum alloy plate, and the wear-resistant and corrosion-resistant aluminum alloy finished product is obtained. The finished product prepared by the invention has excellent wear resistance, corrosion resistance and antibacterial property, so that the finished product has a wide application prospect in the technical field of metal corrosion prevention.

A method of purifying a crude lithium bis(fluorosulfonyl)imide, includes adding a water removal agent to a pretreatment liquid containing the crude lithium bis(fluorosulfonyl)imide to perform a dehydration reaction at a temperature ranging from 20°C to 40°C, reacting the same for an additional 1 h to 6 h after an acid gas stops escaping from the reaction system, and filtering the reaction system to obtain a filtrate; the water removal agent is bismuth trichloride or antimony trichloride. Evaporating and concentrating the filtrate, and recrystallizing the concentrated filtrate are performed to obtain a purified lithium bis(fluorosulfonyl)imide.

Provide are a cell culture method which includes using a culture vessel which contains a cell suspension containing cells and discharging a gas including 30% by volume or more of oxygen into the cell suspension from a sparger disposed in the culture vessel to culture the cells, in which an average hole diameter in a gas discharge portion in the sparger is 1 µm or more and 300 µm or less, and a surface area A (m2) in the gas discharge portion in the sparger, a volume X (m3) of the cell suspension in the culture vessel, and a flow rate Q (m3 / min) of the gas that is discharged from the sparger satisfy a specific relationship, a product producing method including the cell culture method, and a cell culture device that enables the cell culture method.

The invention relates to a sodium ion battery negative electrode material, a pretreatment method of the sodium ion battery negative electrode material, and a corresponding sodium ion battery based on the pretreatment method. According to the provided negative electrode material, firstly, a negative electrode material body is pretreated, a layer of SEI with extremely low solubility is formed on the surface, then the negative electrode material is applied as the negative electrode material of the commercial sodium ion battery, the treated negative electrode material has the SEI which is stable and not easy to dissolve, the first-week coulombic efficiency of the formed sodium ion battery reaches 90.29%, and the second-week coulombic efficiency of the sodium ion battery reaches 90.29%. And after 900 cycles, the average coulombic efficiency reaches 99.95%.