4results about How to "Shorten pickling time" patented technology

The utility model belongs to the technical field of quartz sand production, and particularly relates to quartz sand acid leaching processing equipment which comprises an acid leaching tank body and a stirring device, the stirring device comprises a driving mechanism and a stirring mechanism, the stirring mechanism comprises an inner gear ring, a central stirring assembly and a plurality of groups of eccentric stirring assemblies, and the inner gear ring is arranged in the acid leaching tank body. The plurality of groups of eccentric stirring assemblies are arranged in the inner gear ring at intervals and are respectively meshed and connected with the inner gear ring, the central stirring assembly is arranged among the plurality of groups of eccentric stirring assemblies and is respectively meshed and connected with the plurality of groups of eccentric stirring assemblies, and the driving mechanism is arranged at the upper end of the acid leaching tank body, extends into the acid leaching tank body and is respectively rotationally connected with the plurality of groups of eccentric stirring assemblies. According to the utility model, the stirring device is arranged in the acid leaching tank body, so that the condition that quartz sand is in a piled state is broken, and the quartz sand is in a vortex state in the stirring process, so that the quartz sand is in full contact with acid pickling liquid, the acid pickling effect of the quartz sand is ensured, the acid pickling time is shortened, and the working efficiency is improved.

The invention relates to the field of traditional Chinese medicine extraction, and particularly discloses a comprehensive extraction process of berberine, which comprises the following steps: crushing fresh golden cypress to obtain golden cypress raw material powder, then taking a mixed solvent of a 10-20% methanol solution and citric acid as an entrainer, carrying out supercritical carbon dioxide extraction to obtain an extract, and concentrating the extract to obtain the berberine. Filtering to obtain cortex phellodendri filter residues and a polysaccharide extracting solution mainly containing cortex phellodendri polysaccharide; the cortex phellodendri filter residues in the step S1 are soaked with dilute sulphuric acid and extracted to obtain an extracting solution B containing berberine; adding hydrochloric acid into the extracting solution B for acidification, then adding sodium chloride for salting out, then filtering, and collecting precipitate to obtain berberine extract; the method has the characteristics that the berberine extraction period is shortened, the difficulty of viscous substances for subsequent treatment after acid extraction is solved, the extraction is more convenient and easy to operate, and meanwhile, the berberine extract with higher content is obtained through extraction.

The utility model relates to the technical field of anti-oxidation neodymium iron boron magnet ring preparation, in particular to an anti-oxidation neodymium iron boron magnet ring preparation device which comprises a pickling tank, a support is fixedly connected to the outer side of the pickling tank, a motor is fixedly connected to one end of the support, and the output end of the motor is fixedly connected with a coupler. A water outlet pipe is fixedly connected to the bottom end of the pickling tank, a valve is fixedly connected to the outer side of the water outlet pipe, a filtering tank is fixedly connected to the bottom end of the water outlet pipe, and a blocking cover is in threaded connection with one end in the filtering tank; according to the magnetic ring pickling device, the pickling tank, the motor, the paddles and other structures are arranged, so that the magnetic ring placed in the pickling tank can be subjected to pickling, the pickling solution and rust on the surface of the magnetic ring are subjected to chemical reaction, the rust can be removed, and the requirement of anti-oxidation treatment is met.

This invention discloses a method and product for purifying low-impurity quartz sand, relating to the field of quartz sand purification technology. The method includes: Step 1: Crushing and screening to obtain pretreated pure quartz sand; Step 2: Calcination-water quenching to obtain lattice-activated quartz sand; Step 3: Magnetic separation to obtain deeply purified quartz sand; Step 4: Ultrasonic-flotation synergistic treatment to obtain purified quartz sand; Step 5: Pressure acid leaching to obtain deeply purified quartz sand; Step 6: High-temperature chlorination and inert atmosphere cooling to obtain chlorinated purified quartz sand; Step 7: Dehydroxylation treatment to obtain dehydroxylated quartz sand; Step 8: Plasma purification to obtain a low-impurity quartz sand product with a purity ≥99.9999%. In this invention, pressure acid leaching directly acts on the surface and inside microcracks, allowing for faster acid penetration and more thorough dissolution. This synergistic effect of flotation and acid leaching increases the product purity from 99.78% to over 99.9999% with the same acid consumption.