9 results about "Hydroxide potassium" patented technology

A method and system for recycling aluminium-air batteries and recovering valuable components, aluminium trihydroxide (ATH) and potassium hydroxide (KOH) electrolyte includes selective precipitation and electrodialysis techniques to efficiently recover ATH and KOH with high purity. The process begins with a feed collection unit (102) receiving a 5 recycled solution mixture from batteries, which is then filtered by a filtration unit (104) to filter out sustemded particles of ATH and impurites. The filtered solution is subjected to precipitation in a precipitation unit (108) to precipitate ATH, and thereafter to electrodialysis in an electrodialysis unit (114) to convert the potassium salt solution remaining after the precipitation to KOH electrolyte and an acid. The electrodialysis is carried out using ion-0 selective membranes and acid acid obtained from the electrodialysis unit (114) in the precipitation unit (108).

The utility model discloses a kind of storage device of potassium hydroxide, including storage container, KOH input port, inert gas input port, circulating pump system, observation port, sealing unit, cooling unit and control module are equipped on storage container;The control module is connected with metal ion concentration sensor, temperature sensor, flow sensor and pH monitor;The control module is used to collect the above sensor data, controls circulating pump system and cooling unit operating state, adjusts soft water supply flow, and triggers early warning when parameter is abnormal, simultaneously, operating data is uploaded to remote platform.

The application discloses a multi-surface washing sink structure used in a potassium hydroxide etching cleaning stage, relates to the technical field of wafer etching and cleaning, and specifically comprises a cleaning box and a box door, wherein the cleaning box is provided with the box door on one side, rotating spray washing cavities and soaking cavities are arranged in the cleaning box, and a telescopic control assembly is arranged in the cleaning box; through the compact design of integrating the vertical soaking cavity and the horizontal rotating spray washing cavity, the automatic cooperation of the overturning placement mechanism and the telescopic control assembly, efficient posture switching of the wafer from vertical soaking to horizontal washing is realized, in the dynamic washing mechanism, the strip-shaped conveying assembly and the swing nozzle are linked and driven to rotate the wafer, and multi-angle spraying is cooperated to completely eliminate the cleaning blind area of surface residues.

The invention provides a method for preparing a potassium sulfate fertilizer and co-producing a cement raw material by using ardealite. According to the method disclosed by the invention, the potassium sulfate fertilizer is prepared by a one-step potassium hydroxide leaching ardealite method, and meanwhile, the byproduct filter residue is subjected to low-temperature calcination, so that cement raw materials (SiO2 and CaO) can be obtained; the ardealite is directly leached through potassium hydroxide, high-purity potassium sulfate is obtained in one step, the cement raw material is directly obtained through low-temperature calcination of by-products, the process is simple, environment-friendly and efficient, and double-industry high-value utilization of solid waste is achieved. The prepared potassium sulfate fertilizer is high in purity, chloride ions and other elements unfavorable for soil are not introduced, and meanwhile a thought is provided for effectively absorbing a large amount of solid waste, namely ardealite; the calcining temperature is only 300-600 DEG C, compared with the prior art, the calcining temperature is lower, the energy consumption is lower, the cement raw materials (SiO2 and CaO) are obtained at the same time, and the maximum efficient utilization of the phosphogypsum is realized.

The application relates to a composite material structure for fire prevention and a preparation method and a composite side window glass. The composite material structure for fire prevention at least comprises an interpenetrating network layer, the interpenetrating network layer is an interpenetrating network structure layer made of an adhesive and K2O.nSiO2-based nanometer hard fibers with a diameter of 900 nm to 2.5 mu m and a modulus of 4.5 to 5.5; the K2O.nSiO2-based nanometer hard fibers with a high modulus are prepared from the following raw materials in parts by weight: 18 to 75 parts of tetraethyl orthosilicate, 0.1 to 0.5 parts of nitric acid, 30 to 120 parts of deionized water, 50 to 200 parts of a polyethylene glycol aqueous solution, 1 to 2 parts of ethanol, 0.5 to 1 part of a reactive emulsifier SE-10N, 0.4 to 1.2 parts of ammonia water and 3 to 6 parts of potassium hydroxide by using a multi-channel in-situ electrospinning method. The composite side window glass has the functions of fire prevention and heat insulation and has a long service life.

The invention relates to the field of high polymer materials, and particularly discloses a wear-resistant butyronitrile glove and a preparation method thereof. The glove is prepared from butyronitrile latex composite slurry, and the slurry comprises the following raw materials in parts by weight: 100 parts of butyronitrile latex; 0.6-1 part of a foamless wetting agent; 1.5 to 1.8 parts of potassium hydroxide; 1 to 1.5 parts of sulfur powder; 1-2 parts of zinc oxide; 0.3 to 0.5 part of a BZ accelerant; 0.3 to 0.5 part of an EZ accelerant; 1.5 to 2 parts of titanium dioxide; 0.05 to 0.1 part of a coloring agent; 0.8 to 1.2 parts of a wear-resistant filler; the wear-resistant filler comprises silicon oxide nanofibers, eggshell powder and lignin nanoparticles; and the balance of deionized water. The solid content is 14 to 14.5 percent. The preparation method comprises the following steps: preparing a coagulator and butyronitrile latex composite slurry; soaking in a coagulating agent; dipping for the first time; dipping for the second time; hemming, drying, cooling and demolding. The material has the advantage of excellent wear resistance.

The invention relates to the technical field of fine chemical engineering, and discloses a preparation process for producing potassium formate, which is characterized in that formic acid and potassium hydroxide are used as core reaction raw materials, and a potassium formate finished product is prepared through the steps of precise neutralization reaction, compound impurity removal, activated carbon deep decoloration, vacuum concentration, gradient cooling crystallization and vacuum drying. According to the method, the reaction pH value, the reaction temperature and the material ratio are regulated and controlled, the chelating impurity removal and low-temperature crystallization processes are combined, metal ions and organic impurities in the product are effectively removed, the problems that a traditional potassium formate preparation process is low in purity, poor in yield, low in production safety and insufficient in environmental protection property are solved, and the prepared potassium formate product is high in purity, excellent in water solubility and suitable for industrial production. The method can be widely applied to the fields of oilfield drilling, snow-melting agents, leather tanning, chemical intermediates and the like, and is suitable for large-scale industrial production.

When potassium hydroxide (KOH) or other activating agents are used to activate carbon, the hydrochloric acid used to remove it may damage the stainless steel equipment used in the process. Herein, water and citric acid are used to wash the carbon after its activation to reduce damage to the equipment. Prior to activation, a slurry of coal, petroleum coke or other carbonaceous material mixed with water and KOH is dried in layers. During drying, the KOH repeatedly precipitates as a crust on the layers and is repeatedly blended back into the mixture. Activation temperature and duration may be selected to control the pore size distribution in the activated carbon.

The invention relates to a cleaning article (2) for a rotisserie oven and a method for producing the same, and to an assembly comprising a rotisserie oven and one or more cleaning articles. The cleaning article comprises a first cleaning component (4), a second cleaning component (6) and a water-soluble film (8) that encloses the first and second cleaning components. The first cleaning component comprises a first cleaning agent (4a). The first cleaning agent is provided as a powder and comprises enzymes. The second cleaning component comprises a second cleaning agent (6a) and a meltable coating (6b) that seals the second cleaning agent. The second cleaning agent comprises at least one of the group consisting of: sodium hydroxide (NaOH) and potassium hydroxide (KOH).