39results about How to "Reduce activation costs" patented technology

The invention relates to a method for preparing geopolymers by taking stone coal vanadium extraction tailings as main raw materials. The technical scheme is as follows: the method adopts the following raw materials in percentage by weight: 55-76% of stone coal vanadium extraction tailings, 1-5% of hydrated lime, 0.3-2% of anhydrous sodium sulfate, 10-16% of metakaolin, 6-10% of sodium hydroxide and 6-13% of silica fume. The preparation method disclosed by the invention comprises the steps of firstly, uniformly mixing the stone coal vanadium extraction tailings and an activating agent, standing, calcining, and performing mechanical vibration milling to obtain activated slag; then, adding metakaolin and sand, and stirring; finally, adding a liquid alkali activator prepared from sodium hydroxide, silica fume and water, stirring, forming, aging and curing to prepare the stone coal vanadium extraction tailing geopolymers. The method disclosed by the invention is simple in process, low in cost, relatively small in energy consumption, high in tailing utilization ratio and environment-friendly; the prepared geopolymers are relatively high in compression strength, strong in dry shrinkage resistance, good in permeability resistance and high in durability, and have a good curing effect on heavy metal ions.

The invention discloses an activation circuit applied to a battery protection circuit, an activation method thereof, a battery protection circuit and a battery. The battery protection circuit includes a battery management chip and a charging switch tube. The battery management chip controls the charging switch tube to charge the battery cell. The working voltage of the battery management chip is provided by the battery cell it protects. The activation circuit includes: a capacitor and a capacitor The charging circuit, the two ends of the capacitor are respectively connected to the gate and source of the charging switch tube, the capacitor charging circuit is used to charge the capacitor when the battery is over-discharged so that the battery management chip cannot control the charging switch tube to charge the battery, so that Provide a forward bias voltage to the charging switch tube to turn on the charging switch tube, so that the external power supply can directly charge the battery cell through the charging interface and the charging switch tube to activate the battery management chip. Through the above method, the present invention can realize the activation of the battery protection circuit in a relatively simple manner, the activation time is short and the activation cost is low.

The invention discloses an activated carbon fiber ball and a preparation method thereof, and belongs to the field of activated carbon materials, and provides the activated carbon fiber ball mainly aiming at the problems that the activated carbon fiber is over-high in preparation cost, low in porosity, large in subsequent processing difficulty, single in form, inconvenient to fill and the like at present. According to the main technical scheme, the preparation method of the activated carbon fiber ball comprises the following steps: mixing short carbon fiber with a liquid-containing binder and then stirring at a high speed to form a fiber ball; adding a thermosetting resin emulsion or solution according to the solid content; secondarily rolling and cladding to prepare a fiber / resin ball; solidifying for 2-10 hours at 100-300 DEG C, so as to prepare a solidified ball; putting the solidified ball into a carbonization and activation furnace; and carbonizing and activating by water vapor, so as to prepare the activated carbon fiber ball. The activated carbon fiber ball is good in strength, good in particle sphericity, convenient to fill and exchange, good in permeability, light in weight, strong in adsorption capacity, high in sphere strength, and excellent in inoxidizability and corrosion resistance, and can be widely applied to water treatment, air purification, trace pollutant removal, a catalyst carrier and the like.

The invention discloses a resource optimization method based on a shared link risk group, including: (1) subdividing the link fault monitoring points, marking the OTS section, so that the link monitoring points are refined from the OMS section to the OMS section (2) Associating the OTS segment link monitoring point with the shared link risk group; where the OMS segment refers to the link between the ROADM sites, and the OTS segment refers to the ROADM site and the OLA site or two Links between OLA sites. The method of the invention can improve the utilization rate of resources, improve the success rate of switching, and reduce the cost of engineering commissioning. The invention also provides corresponding electronic equipment.

The present invention provides a single-cell activation method for a direct borohydride fuel cell (DBFC). The single-cell activation method is characterized by comprising three steps such as initial stage activation, electrochemical alternating current accelerated activation and cell performance testing, has characteristics of rapid electrochemical reaction interface expansion, short activation time, fuel saving, simple system and the like, and is especially suitable for activation of the DBFC with characteristics of low catalyst activity and long activation time.