2results about How to "Improve daily throughput" patented technology

The application belongs to the technical field of phosphogypsum resource utilization, and discloses a method for synthesizing water sodium ettringite by using phosphogypsum under low temperature, rapid and normal pressure hydrothermal reaction, which comprises the following steps: 1) mixing water with phosphoric acid-sulfonic acid double-group modified polycarboxylic superplasticizer and small-molecule polycarboxylic salt crystal modifier, and then stirring uniformly to obtain a reaction bottom liquid; wherein the phosphoric acid-sulfonic acid double-group modified polycarboxylic superplasticizer is prepared by free radical copolymerization of unsaturated carboxylic acid monomer, ethylene glycol monovinyl polyoxyethylene ether macromonomer, phosphoric acid group-containing monomer and sulfonic acid group-containing monomer under ultraviolet irradiation; 2) preheating the reaction bottom liquid, adding sodium salt and phosphogypsum, and then performing normal pressure hydrothermal crystal transformation at 70-80 DEG C for 15-30 min to obtain water sodium ettringite. The application can realize ultrafast hydrothermal conversion within 30 min under the mild conditions of low temperature (70-80 DEG C) and normal pressure, and cultivate short columnar water sodium ettringite which is highly dispersed, small in particle size and uniform.

This invention relates to a rapid drying method, apparatus, and sodium-ion battery for Prussian blue analogue sodium-ion battery electrodes, belonging to the field of sodium-ion battery manufacturing technology. The rapid drying method includes the following steps: S1: Preparing the wet electrode sheet and feeding it into a drying chamber for drying; S2: Transferring it to an internally heated dehydration section for gradient temperature dehydration; S3: Transferring it to an instantaneous high-temperature dehydration section for instantaneous high-temperature dehydration; S4: Transferring it to a heat-preserving dehydration section for further deep dehydration; S5: Cooling the electrode sheet after step S4 to obtain a dried electrode sheet. This drying method has the advantages of being rapid and low-cost, and can minimize structural damage to the Prussian blue analogue material.