5results about How to "Improved particle size distribution" patented technology

This invention belongs to the field of industrial solid waste resource utilization technology, and relates to a circulating fluidized bed ash-based cementitious material for road base courses and its preparation method. The raw materials for the road base course cementitious material are composed of the following mass parts: 29-43 parts of circulating fluidized bed ash, 16-27 parts of ground blast furnace slag, 3-6 parts of silica fume, 7-15 parts of P.O42.5 silicate cement, 0.1-0.4 parts of activator, and 27-30 parts of water. The circulating fluidized bed ash is prepared by mixing circulating fluidized bed fly ash and slag in a mass ratio of (2-5):(5-10). This invention effectively alleviates the problems of fast setting time and shrinkage cracking of traditional road base course cementitious materials by utilizing the characteristics of micro-expansion and long hydration time of circulating fluidized bed ash. The advantage of this invention is that it promotes the large-scale utilization of circulating fluidized bed ash and contributes to carbon emission reduction in the road sector.

This invention discloses a high-compact, high-capacity lithium iron phosphate cathode material and its preparation method. Using iron phosphate and iron hydroxide as a mixed iron source, a two-step synthesis method is employed. First, the two raw materials are ground to one large particle size and one small particle size. The large particle size is sintered at two different temperatures to prepare large and medium particles, while the small particle size is sintered at two different temperatures to prepare small and ultra-small particles. Then, the large and medium particles are mixed and ground to a large particle size, and the small and ultra-small particles are mixed and ground to a small particle size. The mixing of large and small particle sizes increases the particle size distribution, and sintering yields the high-compact, high-capacity lithium iron phosphate cathode material. The mixing and grinding of multiple particles in this invention further increases the particle size distribution and improves the compaction density of the cathode material. The use of a low-molecular-weight carbon source in the first sintering stage is beneficial for particle coating and improves particle roundness. The use of a high-molecular-weight carbon source in the second sintering stage constructs a continuous conductive network, ensuring the material's capacity is fully realized.

This invention relates to the field of non-metallic mine backfilling technology, and particularly to a potash mine solid-liquid tailings-based backfill material and its preparation method. The preparation method of the backfill material includes: mixing potassium phosphate with tailings to obtain a phosphate brine solution; dry mixing composition 1 of a composite binder with the tailings to obtain a uniform dry material; adding the phosphate brine solution to obtain a uniform slurry 1; adding a mineral carrier-loaded slow-release alkali source to the uniform slurry 1 to obtain a uniform slurry 2; first adding a polycarboxylate superplasticizer to the uniform slurry 2 and mixing, then adding an associative thickener solution and mixing, and finally adding anionic polyacrylamide to obtain the backfill material. The backfill material prepared by this invention achieves a coordinated balance between slurry fluidity, anti-segregation, pumpability, and backfill strength, providing an economical, environmentally friendly, and efficient technical solution for backfilling non-metallic mine goaf areas.

This invention, entitled "A Camellia Seed Oil Microcapsule Emulsion and Its Preparation Method and Application," belongs to the field of cosmetic technology. The technical problem it aims to solve is the deficiency in existing technologies where camellia seed oil is prone to rancidity, leading to reduced stability and bioavailability of formulations. This invention provides a camellia seed oil microcapsule emulsion system that can slow down the rancidity process, thus achieving a transition from oil-soluble to water-soluble camellia seed oil. The key technical solution is a camellia seed oil microcapsule emulsion, the raw materials of which consist of camellia seed oil, sodium caseinate, chitosan hydrochloride, PE9010, and a solvent.

This utility model discloses a spray mechanism for a spray drying tower, relating to the field of spray drying tower technology. The spray mechanism includes a motor and a centrifugal disc connected to the motor's output end. It also includes a flow guiding device vertically positioned in the center of the centrifugal disc. The flow guiding device has a first through-hole vertically formed inside and multiple second through-holes formed on its outer side, all of which communicate with the first through-hole. A liquid inlet pipe is connected to the lower end of the first through-hole. Multiple circular holes are formed on the outer surface of the centrifugal disc. By adding a flow guiding device and forming a first and multiple second through-holes inside it, along with an arc-shaped flow guide groove design, this utility model achieves uniform distribution of the liquid to be atomized, significantly improving the droplet size distribution during atomization, resulting in more uniform atomization and improved drying efficiency.