7results about How to "Fully leached" patented technology

This invention discloses a method for preparing battery-grade nickel sulfate and iron phosphate using nickel pig iron and ferric phosphate slag as raw materials. The preparation process involves first mixing the ferric phosphate slag with cationic alkyl polyacrylamide to form a uniform mixture. This mixture is then added to dilute acid and stirred to disperse it. Nickel pig iron powder is added, and the mixture is filtered to obtain a leaching solution. The leaching solution is then subjected to nickel-iron separation using resin to obtain an iron-containing solution and a nickel-containing resin. The nickel-containing resin is desorbed to obtain a desorbed solution. A nickel-based pH adjuster is added to this desorbed solution, and the solution is filtered to obtain a nickel sulfate solution. After evaporation and concentration to precipitate crystals, the solution is dried and crushed to obtain battery-grade nickel sulfate. Hydrogen peroxide is added to the iron-containing solution to oxidize ferrous iron to ferric iron. A phosphorus source is added, the pH is adjusted, and the solution is reacted, filtered, and dried to obtain iron phosphate dihydrate. This is then calcined to obtain battery-grade iron phosphate. This invention uses nickel pig iron and ferrophosphate slag as raw materials, and utilizes the ferrophosphate slag to promote the full leaching of iron from nickel pig iron, and nickel pig iron to promote the leaching of phosphate and iron from ferrophosphate. With the addition of cationic alkyl polyacrylamide, it achieves high leaching rates of iron and nickel in a short time, and simultaneously achieves the separation of non-ferrous and nickel metal ions during the acid leaching process, so as to finally obtain high-purity, qualified battery-grade nickel sulfate and ferrophosphate.

The invention relates to the technical field of poria cocos ultra-thin sheet preparation methods, and discloses a method for preparing poria cocos ultra-thin sheets by freezing, which comprises the following steps: cleaning fresh poria cocos, cutting into strips, and freezing in freezing equipment; putting the frozen poria cocos strips into a slicing machine for slicing treatment; according to the method disclosed by the invention, freezing is utilized: firstly, the tissue structure of the poria cocos is destroyed, so that the tissue structure of the frozen poria cocos is compact; and secondly, the poria cocos fibers can be cut into very thin slices with the thickness of 0.3 mm to 2 mm after being solidified by freezing. Therefore, nutrient substances and trace elements of the poria cocos brewed with boiling water are rapidly and fully leached during drinking, the product value is high, and the defect that the effect of the poria cocos cannot be fully exerted due to the fact that nutrient substances and trace elements are difficult to fully separate out when the poria cocos is brewed with boiling water in the prior art is overcome; the invention provides a processing technology which is simple in process, convenient to drink, rich in nutrition, original in taste and flavor and capable of preserving natural nutrient substances.

The invention discloses a method for synergistically recovering key metals from secondary resources, which comprises the following steps: S1, low-temperature roasting: after crushing an aluminum-based molybdenum-nickel waste catalyst, carrying out low-temperature roasting; s2, primary alkaline leaching and filtering: carrying out primary alkaline leaching on the aluminum-based molybdenum-nickel waste catalyst powder to obtain primary alkaline leaching liquid and primary alkaline leaching residues; s3, secondary alkaline leaching and filtering: carrying out secondary alkaline leaching on the primary alkaline leaching residues to obtain secondary alkaline leaching liquid and nickel-aluminum residues; s4, high-acid leaching: adding titanium dioxide waste acid and scandium-rich slag into the nickel-aluminum slag, cooperatively performing high-acid leaching, and adding MHP slurry to obtain high-acid leaching liquid and high-acid leaching slag; s5, low-acid leaching: adding MHP slurry into the high-acid leaching solution, and carrying out low-acid leaching to obtain low-acid slurry; and S6, settling by using a thickener: feeding the low-acid leaching solution into the thickener, and carrying out settling separation. According to the method, valuable metals in secondary resources can be effectively recovered, the recovery rate is remarkably increased, the purpose of treating waste with waste is achieved, the process cost is remarkably reduced, and economic benefits are greatly increased.

This utility model discloses a soil microbial strain leachate collection device, belonging to the field of microbial strain collection technology. It solves the problem that existing collection devices cannot fully leach microbial strains from the leachate. The device includes a shell assembly and a filtration mechanism. The filtration mechanism is installed inside the shell assembly and consists of a filter cylinder, a stirring shaft, and a crushing component. The rotation of the stirring shaft drives the crushing component to crush the clumps of soil inside the filter cylinder, ensuring that the microbial strains in the soil can be fully leach into the leachate. In addition, a cleaning brush and a cleaning scraper are installed on the outside of the filter cylinder, which can clean the microbial strains on the outer wall of the filter cylinder and the inner wall of the outer shell and let them enter the leachate, thereby improving the collection effect of microbial strains.

The utility model provides an extraction device for extracting metal copper from electroplating sludge. The extraction device for extracting the metal copper from the electroplating sludge comprises a bottom plate, four sets of supporting rods are installed at the bottom of the bottom plate, a mixing box is installed on the left side of the top of the bottom plate, a solution box is installed on the right side of the top of the bottom plate, and fixing plates are installed at the bottoms of the mixing box and the solution box. The rotating shaft is mounted in the mixing barrel, the top of the rotating shaft penetrates through the through hole formed in the top of the mixing box and is fixedly connected with the motor, and the bottom of the rotating shaft is rotationally connected with the inner bottom surface of the mixing box, so that the rotating shaft can be driven by the motor to rotate in the mixing box; and then the stirring device is driven to rotate in the mixing box, so that the electroplating sludge leachate and the metal copper extraction agent in the mixing barrel can be fully stirred, the electroplating sludge leachate and the metal copper extraction agent are fully fused, and precipitation of metal copper in the electroplating sludge leachate is accelerated.

The invention discloses an extraction method of dihydroquercetin and rhamnose in engelhardia roxburghiana and a plant extract composition containing dihydroquercetin. The extraction method comprises the following steps: S1, extraction; S2, purification of astilbin; S3, hydrolysis of astilbin; the extraction method disclosed by the invention is stable in process and suitable for industrial large-scale production and has a good market prospect, and the plant extract composition of dihydroquercetin disclosed by the invention takes dihydroquercetin extracted from engelhardia roxburghiana leaves as a main component, cooperates with four plant extract components and is applied to a formula, so that the plant extract composition has a good application prospect. The traditional Chinese medicine composition has good effects of removing excessive free radicals of a human body, improving skin laxity and resisting wrinkles, and can effectively relieve symptoms such as dark skin, obvious wrinkles and dry skin.

The invention discloses a treatment method for removing cadmium from contaminated biomass by using Aspergillus niger, and the treatment method comprises the following steps: using Aspergillus niger as an exogenous added fungus to extract cadmium from contaminated biomass alone, optimizing the optimal conditions by using the response surface method, and using the pretreatment method based on the optimal conditions of the response surface to work together with Aspergillus niger to complete the removal of cadmium from contaminated biomass. The treatment method of the invention performs shake flask extraction and culture of Aspergillus niger and contaminated biomass in a microbial extraction manner, which can achieve effective treatment of cadmium-contaminated biomass after plant restoration, has the advantages of good treatment effect, low investment, green environmental protection, low technical management requirements, simple operation, etc., and can also achieve the reuse of the treated biomass as fertilizer, which has good environmental benefits, social benefits and economic benefits.