74results about How to "Granularity adjustable" patented technology

A method for determining the radio frame structure of a Time Division Duplex system is disclosed, which comprises: configuring, by the network side, the radio frame structure used for service transmission as containing two half-frames each of 5 ms, wherein each half-frame consists of eight service time slots of 0.5 ms and one special time slot field of 1 ms, two consecutive service time slots form a subframe of which the length is 1 ms, and the special time slot field contains a DwPTS, a GP and an UpPTS; determining the lengths of the DwPTS, the GP and the UpPTS in the special time slot field according to the requirements of the coverage range, and determining the radio frame structure used for service transmission. By reconfiguring the radio frame structure, the invention can flexibly support different coverage ranges, enhance the flexibility of satisfying different service requirements, and implement the coexistence of two types of TDD systems.

The invention discloses a large efficient screening-type double-toothed roll crusher provided with a distribution device. The double-toothed roll crusher comprises a crushing device and the distribution device. The crushing device comprises a crushing drive motor, a fluid coupling, a reducer, a double-drum gear coupling, a crushing box, a base support, a left toothed roll, a right toothed roll and a lubricating grease pump, wherein the crushing drive motor, the fluid coupling, the reducer and the double-drum gear coupling form two sets of crushing drive units; and the two sets of crushing drive units are connected wit the left toothed roll and the right toothed roll inside the crushing box respectively. The distribution device comprises a distribution chute, an adjustable distribution stick, a movable connecting bracket, a distribution seat and a fixed connecting bracket, wherein the fixed connecting bracket and the distribution seat are fixed on the crushing box of the crushing device, the distribution chute is fixed at a discharge port of a material output belt machine head, and the distribution chute is connected with the crushing box through the movable and fixed connecting brackets. According to the large efficient screening-type double-toothed roll crusher, the problems of capital investment, equipment movement and the like of crushing equipment combined by a plurality of devices are solved fundamentally, the labor intensity of daily equipment maintenance is reduced, and the mining of surface mine materials is accelerated.

The invention discloses a dry-wet combination method to prepare superfine calcined kaolin. After grinding by dry method, the kaolin raw ore grains are classified according to the grain size. The superfine with the grain greater than 1250 meshes can be made into a finished product by direct calcination. While for the meal with the grain less than 1250 meshes, dispersing agent, intercalation agent,and whitening agent can be added simultaneously under wet grinding, so as to improve the grinding efficiency, shorten the grinding time, and reduce the energy consumption during grinding process, as well as improve the mixing effect of the whitening agent and the kaolin. The meal scattered and dried after grinding, is sent into rotary kiln for calcinations. The kaolin is grinded again after calcination by wet grinding method. The dispersing agent and modifying agent are added simultaneously, to combine the superfine grinding and the modifying of product simultaneously. The modified powder is grinded to obtain the other finished product after drying and scattering. The invention allows superfine calcined kaolin with different specification during the same production line by the control of the process condition, thus reducing the working procedure, improving the added value of product, broadening the application field and product performance, so as to meet the requirements of different customers.

The invention relates to the field of ceramic materials, in particular to a method for preparing nanometer MAX phase ceramic powder with a laminated structure or a slurry through ball milling and regulating the oxygen content of the powder. Micron-sized MAX phase ceramic coarse powder is adopted as a raw material, and during ball milling, a gas or a liquid-state gas with a special effect is fed into a ball milling tank. Through multi-dimensional functions and adjustment such as ball milling parameters and gas reaction, the nanometer laminated MAX phase ceramic powder or the slurry containing the component are obtained, so that the particle size adjustment control of the powder is realized, and meanwhile, the surface components and the activated state of the powder are regulated. The finally obtained powder or slurry can be used as a precursor so as to meet the demands on high-end MXenes material stripping and functionalization, or can be used as MAX phase ceramic nanometer raw materialpowder so as to be used for sintering and preparing the in-situ synthesis nanometer MAX phase / oxide composite ceramic with the regulatable oxide content.

The invention provides a phase transformation energy-storage microcapsule and its preparing process, wherein the microcapsule comprises a capsule shell and phase-change material coated thereby, the capsule shell is made of silicon dioxide gel 20-65 wt% of the microcapsule, the phase-change material being organic material amounting to 80-35 wt% of the microcapsule. The raw materials for preparing the microcapsule also include 0.5-3 parts of emulsifying agent, 30-80 parts of distilled water, 0-1 part of addition agent, 5.6-11.2 parts of n-ethyl silicate and 0.05-1 part of catalyst.