50results about How to "High preparation rate" patented technology

The invention provides a manufacturing apparatus for nanometer powder, The apparatus contains: a reaction room with an incidence window; an laser generator used to generate laser; an optical system, which is located on the incidence window and used to focus the laser generated by the laser generator, and then the focused laser enters the reaction room through the incidence window; at least one input device of reaction air providing air for the reaction room; a vacuumizing device used to vacuumize the reaction room; a powder collecting unit to collect the powder produced by reaction of air; and a microwave generator used to generate the microwave which causes the cyclotron resonance of the microwave electron. The invention also provides a manufacturing method for nanometer powder.

A hollow light-weight, low-cost, and high-performance 3D Luneburg lens structure using partially-metalized thin film, string, threads, fiber or wire base metamaterial to implement the continuously varying relative permittivity profile, characteristic of Luneburg lens structures, is disclosed. The hollow light-weight lens structure is based on the effective medium approach and may be implemented by a number of means. Further, most of the volume of the lens structure is free-space, thus the weight of the lens is significantly less than conventional 3D Luneburg lens structures of the same dimensions.

The invention discloses a banana fiber extraction device based on the bionicity of the upper jaw of leaf-cutter ants, which includes a frame, a cutting mechanism, and a flattening mechanism located on the front side of the cutting mechanism. The front end of the knife and the fixed knife is provided with L-shaped notches, and the L-shaped notches are staggered with large and small tooth edges. The flattening mechanism includes two upper and lower pressure rollers arranged in parallel up and down. The upper pressure roller is sleeved with an upper The lower pressure roller is sleeved with the lower block, the top of the frame is bolted to the support, and the upper block and the lower block are arranged in the support. The present invention can effectively reduce the content of The impurity rate and winding blockage reduce the impurity content rate, improve the final fiber preparation rate, increase the contact area between the fixed knife and the fiber surface, improve the processing efficiency, and reduce the damage of the fixed knife to the banana fiber during processing. Yield reduces clogging.

The invention discloses a method for preparing simulated cellulase. The method comprises the following steps: taking a cellulose material, washing, removing the impurities, drying, grinding, and screening, thereby obtaining cellulose powder; uniformly mixing and stirring the obtained cellulose powder with ionic liquid according to a mass ratio of 1-20:100, preserving the temperature, performing assisted microwave treatment so as to expand the fibers, washing to remove the ionic liquid, and drying to remove the moisture, thereby obtaining a primary sample; adding the obtained primary sample into a crucible, putting the crucible into a tube furnace, and performing heating treatment under gas protection; adding a mixed acid, adding water and washing to remove the impurities, and drying to obtain dried powder, thereby obtaining the sample powder; adding the obtained sample powder into an organic base, stirring, heating, reacting, and washing by using a cleaning solvent, thereby obtaining the simulated cellulase. The simulated cellulase prepared by the method is high in binding ability with a substrate (a cellulose material) and good in thermal stability, high-temperature catalysis can be performed, the catalytic effect is good, the cost of the raw materials is low, and the cellulase can be repeatedly utilized.

The invention relates to a production process for tetrabasic lead sulfate (4BS). The process includes the following steps that (1) preparation treatment is conducted, specifically, lead which is subjected to a pre-mixing reaction is delivered into a reaction kettle through a shear pump, a sulfuric acid solution is added into the reaction kettle while internal circulation type stirring is conducted, meanwhile, part of compressed air is led into the reaction kettle, after the sulfuric acid solution is added, the shear pump is started, the reaction kettle is heated, after internal and external circulation type uniform stirring, heating is stopped, the shear pump is shut down, internal circulation type stirring in the reaction kettle is maintained, and meanwhile, compressed air is led into the reaction kettle to cool lead slime; and (2) ball milling is conducted, specifically, the lead slime obtained in the step (1) is conveyed into a dry ball mill, heating drying and a ball milling reaction are conducted synchronously, and the 4BS is obtained. The invention further provides a production device for the 4BS. According to the production process and device, the preparation reaction time is short, the formed 4BS is small in grain size, uniform and controllable, and the average grain size of the obtained 4BS is 2 [mu]m or less.