7results 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.

The invention belongs to the technical field of back contact cells, and particularly relates to a graphite boat saturation method suitable for a PECVD tunneling polycrystalline layer deposition process and application, the graphite boat saturation method comprises the following steps: depositing a silicon nitride film on the surface of a graphite boat, then starting glow for hydrogen treatment, and then depositing a silicon oxide film on the graphite boat obtained after hydrogen treatment; wherein the thickness of the silicon nitride film is 50-100 nm, and the thickness of the silicon oxide film is 375-700 nm; the hydrogen treatment conditions are as follows: the flow rate of the introduced hydrogen is controlled to be 10000 to 20000 sccm, the power is controlled to be 6000 to 10000 W, and the reaction time is 600 to 1800 seconds. According to the graphite boat saturation method, the high-quality tunneling polycrystalline layer can be deposited, the passivation level can be improved, the conversion efficiency of the battery can be improved, the influence of graphite boat saturation on previous coating can be solved, the production yield can be improved, and meanwhile, the pickling time of the graphite boat can be greatly shortened by the graphite boat saturation method.

The invention discloses a multi-stage series cyanuric acid purification system and process, comprising the following steps: crushing a crude cyanuric acid powder to obtain cyanuric acid powder; using a sulfuric acid solution with a mass percentage of 15%-25% to carry out a primary pickling of the cyanuric acid powder, the mass ratio of the cyanuric acid powder to the sulfuric acid solution is 1:2-3, the primary pickling temperature is 60-80 DEG C, and the time is 4-10min; using a 25%-35% sulfuric acid solution to carry out a secondary pickling of the cyanuric acid powder that has been pickled once, the mass ratio of the cyanuric acid powder to the 25%-35% sulfuric acid solution is 1:1-1.5, the secondary pickling temperature is 80-100 DEG C, and the time is 4-10min; after the secondary pickling is completed, washing with clean water to remove the acid on the surface of the cyanuric acid.

The utility model discloses a continuous liquid feeding type circuit board pickling machine which comprises a pickling solution pool, two rotating discs are arranged in an inner cavity of the pickling solution pool, plate positioning assemblies distributed at equal intervals are fixedly installed on the surfaces of the rotating discs, and each plate positioning assembly comprises a fixing block fixedly connected to the corresponding rotating disc. A first inserting groove and a second inserting groove are formed in the two sides of the bottom of the fixing block respectively, and a second sliding groove communicated with the second inserting groove is formed in one side of an inner cavity of the first inserting groove. The continuous liquid inlet type structural design that a circuit board is rapidly replaced is adopted, the circuit board enters a pickling solution in a rotating mode, the circuit board is taken down after the solution is discharged, and therefore the circuit board can be rapidly replaced. The circuit board is rapidly replaced with a new circuit board and is rotated to enter the liquid again, so that the circuit board can be subjected to acid pickling treatment in a rapid continuous liquid entering mode through the circulation, the acid pickling time of the circuit board is saved, the acid pickling efficiency of the circuit board is improved, and convenience is provided for work of a user.

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.